:root {
  --ps-blue: #0070cc;
  --ps-blue-hover: #1883fd;
  --ps-cyan: #1eaedb;
  --ps-black: #000000;
  --paper: #ffffff;
  --ice: #f5f7fa;
  --divider: #f3f3f3;
  --charcoal: #1f1f1f;
  --body: #6b6b6b;
  --muted: #cccccc;
  --line: #0070cc;
  --line-soft: rgba(0, 112, 204, 0.32);
  --line-muted: rgba(32, 41, 57, 0.22);
  --line-backdrop: rgba(245, 247, 250, 0.92);
  --line-shadow: rgba(0, 0, 0, 0.08);
  --danger: #d53b00;
  --nav-width: 248px;
  --chat-sidebar-width: clamp(340px, 28vw, 430px);
  --chat-input-height: 76px;
  --shadow-06: 0 5px 9px rgba(0, 0, 0, 0.06);
  --shadow-08: 0 8px 16px rgba(0, 0, 0, 0.08);
  --shadow-16: 0 18px 42px rgba(0, 0, 0, 0.16);
  --ring: 0 0 0 2px #ffffff, 0 0 0 4px var(--ps-blue);
  --ink: #000000;
  --inkMuted: #6b6b6b;
  --border: #f3f3f3;
  --itemBg: #f5f7fa;
}

html[data-theme="dark"] {
  --ps-blue: #4aa8ff;
  --ps-blue-hover: #6ab8ff;
  --ps-cyan: #5bc0de;
  --ps-black: #0a0a0a;
  --paper: #141414;
  --ice: #1a1a1a;
  --divider: #2a2a2a;
  --charcoal: #e8e8e8;
  --body: #a0a0a0;
  --muted: #555555;
  --line: #4aa8ff;
  --line-soft: rgba(74, 168, 255, 0.38);
  --line-muted: rgba(220, 235, 255, 0.2);
  --line-backdrop: rgba(26, 26, 26, 0.88);
  --line-shadow: rgba(0, 0, 0, 0.3);
  --danger: #ff6b47;
  --shadow-06: 0 5px 9px rgba(0, 0, 0, 0.35);
  --shadow-08: 0 8px 16px rgba(0, 0, 0, 0.45);
  --shadow-16: 0 18px 42px rgba(0, 0, 0, 0.55);
  --ring: 0 0 0 2px #141414, 0 0 0 4px var(--ps-blue);
  --ink: #f0f0f0;
  --inkMuted: #a0a0a0;
  --border: #2a2a2a;
  --itemBg: #1f1f1f;
}

body, .app-shell, .rail, .viewport, .board, .node, .chatbar, .session-panel, .settings-panel {
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease, outline-color 180ms ease, outline-offset 180ms ease;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "SST", Arial, "Helvetica Neue", Helvetica, sans-serif;
  background: var(--ps-black);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
label:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.app-shell {
  display: grid;
  grid-template-columns: var(--nav-width) 1fr;
  grid-template-rows: 1fr;
  grid-template-areas: "rail main";
  height: 100%;
  background: var(--paper);
  position: relative;
}

body.nav-collapsed {
  --nav-width: 0px;
}

.rail {
  grid-area: rail;
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 12px;
  padding: 18px 16px;
  background: var(--ps-black);
  color: var(--paper);
  position: relative;
  overflow: hidden;
  box-shadow: 18px 0 42px rgba(0, 0, 0, 0.18);
}

.nav-toggle {
  width: 36px;
  height: 36px;
  display: grid;
  place-content: center;
  gap: 5px;
  border-radius: 999px;
  color: var(--paper);
  background: transparent;
  border: 0;
  transition: background 160ms ease, color 160ms ease;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--paper);
}

.nav-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: 0 4px 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.nav-brand strong {
  color: var(--paper);
  font-size: 22px;
  font-weight: 300;
  letter-spacing: 0;
  line-height: 1.15;
}

.nav-links {
  display: grid;
  align-content: start;
  gap: 6px;
  padding: 0;
}

.nav-link {
  min-width: 0;
  min-height: 44px;
  display: grid;
  grid-template-columns: 30px 1fr;
  align-items: center;
  gap: 12px;
  padding: 7px 12px;
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.82);
  text-decoration: none;
  font-size: 15px;
  font-weight: 400;
  background: transparent;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.nav-link:hover {
  color: var(--paper);
  background: rgba(255, 255, 255, 0.12);
}

.nav-link.active {
  color: var(--paper);
  background: #0070cc;
}

.nav-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--paper);
  background: rgba(255, 255, 255, 0.12);
}

.nav-icon svg {
  width: 16px;
  height: 16px;
}

.nav-link.active .nav-icon {
  background: rgba(255, 255, 255, 0.22);
}

body.nav-collapsed .rail {
  position: absolute;
  left: 18px;
  top: 25px;
  z-index: 100;
  width: auto;
  height: auto;
  padding: 0;
  background: transparent;
  overflow: visible;
  box-shadow: none;
}

body.nav-collapsed .nav-toggle {
  color: var(--charcoal);
  background: var(--paper);
  border: 0;
  box-shadow: none;
}

body.nav-collapsed .nav-toggle span {
  background: var(--charcoal);
}

body.nav-collapsed .nav-brand,
body.nav-collapsed .nav-links,
body.nav-collapsed .nav-settings {
  display: none;
}

.icon-button {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: var(--charcoal);
  background: var(--paper);
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.icon-button:hover {
  color: var(--paper);
  background: var(--ps-blue-hover);
  transform: scale(1.08);
}

.nav-settings {
  display: grid;
  gap: 12px;
  padding: 18px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.nav-settings-label {
  color: rgba(255, 255, 255, 0.62);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0;
  padding: 0 4px;
}

.nav-settings-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.nav-setting-btn {
  width: 100%;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: var(--paper);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 14px;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.nav-setting-btn:hover {
  color: var(--paper);
  background: var(--ps-blue-hover);
  transform: scale(1.12);
  box-shadow: var(--ring);
}

.nav-setting-btn:active {
  opacity: 0.6;
}

.nav-settings-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 0 4px;
}

.mode-badge {
  min-width: 64px;
  padding: 5px 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0;
}

.save-status {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.62);
}

.save-status.saving { color: var(--ps-cyan); }
.save-status.saved { color: rgba(255, 255, 255, 0.62); }
.save-status.error { color: var(--danger); }

.viewport {
  grid-area: main;
  position: relative;
  overflow: hidden;
  height: 100%;
  margin-right: var(--chat-sidebar-width);
  background-color: var(--ice);
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px);
  background-size: 24px 24px;
}

.viewport.is-panning {
  cursor: grabbing;
}

.board {
  position: absolute;
  left: 0;
  top: 0;
  width: 2400px;
  height: 1500px;
  transform-origin: 0 0;
}

.link-layer {
  position: absolute;
  inset: 0;
  width: 2400px;
  height: 1500px;
  overflow: visible;
  pointer-events: none;
  z-index: 0;
}

.link {
  fill: none;
  stroke: var(--line);
  stroke-width: 1.85;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.7;
  vector-effect: non-scaling-stroke;
  transition: opacity 160ms ease, stroke-width 160ms ease, filter 160ms ease;
}

.link-shadow {
  fill: none;
  stroke: var(--line-backdrop);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.84;
  vector-effect: non-scaling-stroke;
  filter: drop-shadow(0 6px 10px var(--line-shadow));
  transition: opacity 160ms ease, stroke-width 160ms ease;
}

.link-hit-target {
  fill: none;
  stroke: transparent;
  stroke-width: 20;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: stroke;
  cursor: pointer;
  vector-effect: non-scaling-stroke;
}

.link-pin {
  fill: var(--line-backdrop);
  stroke: var(--line-soft);
  stroke-width: 1.5;
  opacity: 0.82;
  vector-effect: non-scaling-stroke;
  transition: opacity 160ms ease, r 160ms ease, stroke-width 160ms ease;
}

.link-terminal {
  fill: var(--line);
  stroke: var(--line-backdrop);
  stroke-width: 2.4;
  opacity: 0.86;
  vector-effect: non-scaling-stroke;
  filter: drop-shadow(0 1px 3px rgba(0, 112, 204, 0.18));
  transition: opacity 160ms ease, r 160ms ease;
}

.link-bundled {
  stroke-width: 2.25;
  opacity: 0.78;
}

.link-junction {
  stroke: var(--line-muted);
  opacity: 0.72;
}

.link-shadow.link-junction {
  opacity: 0.62;
}

.link-pin-junction {
  stroke: var(--line-muted);
  opacity: 0.66;
}

.link-orthogonal {
  stroke-dasharray: none;
}

.link-smooth {
  stroke-width: 1.75;
}

.link-analysis {
  stroke: var(--ps-blue);
}

.link-option,
.link-deep-think {
  stroke: var(--line);
}

.link-connection {
  stroke: var(--ps-cyan);
}

.link-image-search,
.link-generated {
  stroke: var(--ps-cyan);
}

.link.is-hovered {
  opacity: 1;
  stroke-width: 2.6;
  filter: drop-shadow(0 2px 7px rgba(0, 112, 204, 0.2));
}

.link-shadow.is-hovered {
  opacity: 0.96;
  stroke-width: 10;
}

.link-pin.is-hovered,
.link-terminal.is-hovered {
  opacity: 1;
}

.group-layer {
  position: absolute;
  inset: 0;
  width: 2400px;
  height: 1500px;
  pointer-events: none;
  z-index: 0;
}

.group-frame {
  position: absolute;
  border: 1.5px solid rgba(0, 112, 204, 0.26);
  border-radius: 26px;
  background: rgba(0, 112, 204, 0.035);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.68);
}

.group-frame-title {
  position: absolute;
  top: -28px;
  left: 18px;
  padding: 4px 10px;
  border: 1px solid rgba(0, 112, 204, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--ps-blue);
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

.node {
  position: absolute;
  z-index: 1;
  user-select: none;
  touch-action: none;
  transform: rotate(var(--node-rotation, 0deg));
  transform-origin: center center;
}

.node.collapsed-hidden,
.node.selective-hidden {
  display: none !important;
}

.node.dragging {
  z-index: 8;
}

.node.rotating {
  z-index: 10;
}

.canvas-title-bar {
  position: absolute;
  top: 18px;
  left: 20px;
  z-index: 24;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: min(440px, 42vw);
  padding: 6px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-08);
  backdrop-filter: blur(16px);
}

body.nav-collapsed .canvas-title-bar {
  left: 68px;
}

.canvas-title-box {
  min-width: 0;
  max-width: 360px;
  display: flex;
  align-items: center;
}

.canvas-title-display,
.canvas-title-input {
  min-width: 120px;
  max-width: 360px;
  height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.58);
  font-size: 14px;
  font-weight: 700;
}

.canvas-title-display {
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: text;
}

.canvas-title-input {
  width: min(360px, 32vw);
  border: 1px solid rgba(0, 112, 204, 0.2);
  outline: none;
}

.canvas-title-new-button {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 50%;
  color: var(--paper);
  background: var(--ps-blue);
  font-size: 22px;
  line-height: 1;
  font-weight: 500;
  transition: background 160ms ease, transform 160ms ease;
}

.canvas-title-new-button:hover {
  background: var(--ps-blue-hover);
  transform: scale(1.06);
}

.canvas-history-nav {
  position: absolute;
  top: 18px;
  right: 24px;
  z-index: 24;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
  pointer-events: none;
  --canvas-tools-width: 136px;
  transition: right 180ms ease;
}

body.chat-sidebar-closed .canvas-history-nav {
  right: 84px;
}

.canvas-history-label,
.canvas-zoom-hint,
.canvas-link-hint,
.canvas-selection-hint {
  display: block;
  width: 100%;
  color: var(--inkMuted);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.2;
  max-width: 220px;
  text-align: center;
  white-space: nowrap;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.72);
}

.canvas-history-buttons,
.canvas-quick-actions {
  box-sizing: border-box;
  display: flex;
  align-items: center;
  gap: 8px;
  width: var(--canvas-tools-width);
  height: 44px;
  justify-content: center;
  pointer-events: auto;
}

.canvas-history-buttons {
  padding: 4px 6px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-08);
  backdrop-filter: blur(16px);
}

.canvas-quick-actions {
  padding: 4px 6px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 6px 14px rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(14px);
}

.canvas-history-button {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.canvas-history-button:hover:not(:disabled) {
  color: var(--ps-blue);
  background: rgba(0, 112, 204, 0.1);
  transform: scale(1.06);
}

.canvas-history-button:disabled {
  opacity: 0.42;
  cursor: wait;
}

.canvas-history-button svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.canvas-quick-button {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease;
}

.canvas-quick-button:hover:not(:disabled) {
  color: var(--ps-blue);
  background: rgba(0, 112, 204, 0.1);
  transform: scale(1.06);
}

.canvas-quick-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.node.is-selected {
  outline: 2px solid var(--ps-blue);
  outline-offset: 4px;
  border-radius: 24px;
  z-index: 9;
}

.node.is-multi-selected {
  outline: 2px solid rgba(0, 112, 204, 0.7);
  outline-offset: 7px;
  border-radius: 24px;
  z-index: 7;
}

.marquee-selection {
  position: absolute;
  z-index: 18;
  border: 1.5px solid var(--ps-blue);
  border-radius: 12px;
  background: rgba(0, 112, 204, 0.1);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.5) inset;
  pointer-events: none;
}

.selection-toolbar {
  position: absolute;
  z-index: 19;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--divider);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 12px 34px rgba(20, 31, 50, 0.16);
  backdrop-filter: blur(14px);
}

.selection-toolbar span {
  min-width: 34px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
}

.selection-toolbar button {
  border: 0;
  border-radius: 999px;
  padding: 6px 10px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.selection-toolbar button:hover {
  background: rgba(0, 112, 204, 0.1);
  color: var(--ps-blue);
}

.minimap {
  position: absolute;
  left: 20px;
  bottom: 20px;
  z-index: 12;
  width: 180px;
  height: 112px;
  border: 1px solid rgba(20, 31, 50, 0.12);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 14px 40px rgba(20, 31, 50, 0.14);
  overflow: hidden;
  backdrop-filter: blur(12px);
}

.minimap-close {
  position: absolute;
  top: 6px;
  right: 6px;
  z-index: 12;
  width: 22px;
  height: 22px;
  border: 0;
  border-radius: 999px;
  background: rgba(20, 31, 50, 0.72);
  color: #fff;
  font-size: 15px;
  line-height: 1;
  opacity: 0;
  transform: translateY(-3px);
  cursor: pointer;
  transition: opacity 0.14s ease, transform 0.14s ease, background 0.14s ease;
}

.minimap:hover .minimap-close,
.minimap-close:focus-visible {
  opacity: 1;
  transform: translateY(0);
}

.minimap-close:hover {
  background: rgba(0, 112, 204, 0.92);
}

.minimap canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.minimap-viewport {
  position: absolute;
  border: 2px solid var(--ps-blue);
  border-radius: 8px;
  background: rgba(0, 112, 204, 0.08);
  pointer-events: none;
}

.minimap:hover {
  background: rgba(255, 255, 255, 0.92);
}

.node-delete-btn,
.node-content-toggle {
  position: absolute;
  top: 10px;
}

.node-delete-btn {
  right: 10px;
}

.node-content-toggle {
  right: 42px;
}

.node-delete-btn,
.node-content-toggle {
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: none;
  background: rgba(0, 0, 0, 0.35);
  color: #ffffff;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity 180ms ease, background 180ms ease, transform 180ms ease;
  z-index: 10;
  pointer-events: auto;
}

.node:hover .node-delete-btn,
.node:hover .node-content-toggle {
  opacity: 1;
}

.node-delete-btn:hover {
  background: var(--danger);
  transform: scale(1.12);
}

.node-content-toggle:hover,
.node-content-toggle.is-hidden {
  background: var(--ps-blue);
  transform: scale(1.08);
}

.node-delete-btn:disabled {
  opacity: 0;
  pointer-events: none;
}

.junction-node .node-delete-btn {
  top: -16px;
  right: -16px;
  width: 24px;
  height: 24px;
  border: 2px solid var(--paper);
  background: rgba(28, 38, 52, 0.78);
  font-size: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
  z-index: 18;
}

.junction-node .node-delete-btn:hover {
  background: var(--danger);
  transform: scale(1.08);
}

.node-delete-btn:focus-visible {
  opacity: 1;
  outline: 2px solid var(--ps-blue);
  outline-offset: 2px;
}

.source-node .node-delete-btn {
  display: grid;
}

.source-node.standalone-source-node .node-delete-btn {
  display: grid;
}

.source-node.standalone-source-node {
  transform: rotate(calc(-0.6deg + var(--node-rotation, 0deg)));
}

.standalone-source-node .upload-target {
  box-shadow: var(--shadow-12);
}

.standalone-source-name {
  cursor: text;
}

.standalone-source-name:hover {
  background: rgba(0, 112, 204, 0.06);
  border-radius: 6px;
}

.new-card-node {
  background: var(--paper);
  border: 2px dashed var(--ps-border, #d0d0d0);
  border-radius: 16px;
  padding: 20px;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.new-card-node .eyebrow {
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ps-muted, #888);
  margin: 0;
}

.new-card-node .option-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
  color: var(--ink);
}

.new-card-node .option-description {
  font-size: 13px;
  color: var(--ps-muted, #888);
  margin: 0;
  min-height: 20px;
}

.junction-node {
  background: linear-gradient(135deg, var(--ps-cyan), var(--ps-blue));
  border: 1.5px solid var(--ps-blue);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 3px 10px rgba(0, 112, 204, 0.3);
  cursor: default;
}

.junction-node .junction-count {
  font-size: 13px;
  font-weight: 700;
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.junction-node .junction-label {
  display: none;
}

.edge-handle {
  position: absolute;
  width: 24px;
  height: 24px;
  background: var(--ps-blue);
  border: 3px solid var(--paper);
  border-radius: 50%;
  cursor: crosshair;
  opacity: 0;
  transition: opacity 150ms ease, transform 150ms ease;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0, 112, 204, 0.3);
}

.edge-handle-right {
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
}

.edge-handle-left {
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
}

.node:hover .edge-handle {
  opacity: 1;
}

.node:hover .edge-handle:hover {
  transform: translateY(-50%) scale(1.2);
  background: var(--ps-blue-hover);
}

.drag-line {
  stroke: var(--ps-blue);
  stroke-width: 2;
  stroke-dasharray: 8 4;
  fill: none;
  pointer-events: none;
}

.node-title-input {
  font: inherit;
  font-size: inherit;
  font-weight: inherit;
  color: inherit;
  background: var(--paper);
  border: 1px solid var(--ps-blue);
  border-radius: 8px;
  padding: 4px 8px;
  width: 100%;
  outline: none;
  box-shadow: var(--ring);
}

.option-title:hover,
.generated-node h3:hover,
.analysis-node h2:hover,
#sourceName:hover {
  background: rgba(0, 112, 204, 0.06);
  border-radius: 6px;
  cursor: text;
}

.board.is-arranging .node {
  pointer-events: none;
  transition: none;
}

.collapse-dot {
  position: absolute;
  left: -38px;
  top: 50%;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  transform: translateY(-50%);
  border: 2px solid var(--paper);
  border-radius: 999px;
  color: var(--paper);
  background: var(--charcoal);
  box-shadow: 0 0 0 2px rgba(0, 112, 204, 0.14), var(--shadow-08);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  z-index: 5;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.collapse-dot::after {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: inherit;
  background: var(--paper);
}

.collapse-dot.has-children {
  background: var(--ps-blue);
}

.collapse-dot.is-collapsed {
  background: var(--ps-blue);
  box-shadow: var(--ring), var(--shadow-08);
}

.collapse-dot.is-collapsed::after {
  display: none;
}

.collapse-dot:disabled {
  cursor: default;
  opacity: 0.48;
}

.collapse-dot:not(:disabled):hover {
  background: var(--ps-cyan);
  transform: translateY(-50%) scale(1.16);
}

.source-node {
  width: 318px;
  transform: rotate(calc(-1deg + var(--node-rotation, 0deg)));
}

.source-tabs {
  display: flex;
  gap: 4px;
  padding: 8px 12px 0;
}

.source-tab {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  background: transparent;
  color: var(--inkMuted);
  cursor: pointer;
  border: none;
}

.source-tab:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}

.source-tab.active {
  background: var(--itemBg);
  color: var(--ink);
}

.url-input-panel {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.url-input-panel input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
}

.url-source-card {
  display: block;
  padding: 16px;
  background: var(--itemBg);
  border-radius: 12px;
  text-align: center;
  color: var(--ps-blue);
  font-weight: 600;
  text-decoration: none;
  word-break: break-all;
}

.url-source-card:hover {
  background: var(--border);
}

.source-text-panel {
  padding: 12px;
}

.source-node.is-text-mode .source-text-panel {
  position: relative;
  width: 318px;
  height: 326px;
  padding: 0;
  background: var(--paper);
  border: 1px solid var(--divider);
  border-radius: 24px;
  box-shadow: var(--shadow-16);
  overflow: hidden;
}

.source-text-input {
  width: 100%;
  min-height: 326px;
  resize: vertical;
  border: 1px solid var(--divider);
  border-radius: 18px;
  padding: 14px 16px;
  color: var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow-16);
  font: inherit;
  line-height: 1.6;
  outline: none;
}

.source-node.is-text-mode .source-text-input {
  display: block;
  height: 100%;
  min-height: 0;
  padding: 16px 16px 96px;
  resize: none;
  border: none;
  border-radius: 24px;
  background: transparent;
  box-shadow: none;
}

.source-text-input:focus {
  border-color: var(--ps-blue);
  box-shadow: 0 0 0 2px rgba(0, 112, 204, 0.14), var(--shadow-16);
}

.source-node.is-text-mode .source-text-input:focus {
  border-color: transparent;
  box-shadow: none;
}

.source-node.is-text-card .source-text-input {
  border-color: rgba(0, 112, 204, 0.32);
}

.source-text-tools {
  display: none;
}

.source-node.is-text-mode .source-text-tools {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 48px;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px;
  border: 1px solid rgba(0, 112, 204, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 8px 20px rgba(20, 31, 50, 0.1);
}

.source-text-tool {
  width: 24px;
  height: 24px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border: 0;
  border-radius: 999px;
  color: var(--ink);
  background: transparent;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.source-text-tool:hover,
.source-text-tool:focus-visible {
  color: var(--paper);
  background: var(--ps-blue);
  outline: none;
}

.source-text-tool[data-format="italic"] {
  font-style: italic;
}

.source-text-color-wrap {
  position: relative;
  display: inline-grid;
}

.source-text-color-button {
  text-decoration: underline;
  text-decoration-color: var(--ps-blue);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.source-text-color-menu {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 7px);
  display: grid;
  grid-template-columns: repeat(3, 22px);
  gap: 6px;
  padding: 7px;
  border: 1px solid rgba(0, 112, 204, 0.14);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-16);
  opacity: 0;
  pointer-events: none;
  transform: translateX(-50%) translateY(4px);
  transition: opacity 140ms ease, transform 140ms ease;
}

.source-text-color-wrap.is-open .source-text-color-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.source-text-color-option {
  width: 22px;
  height: 22px;
  border: 2px solid var(--paper);
  border-radius: 999px;
  background: var(--text-color-option);
  box-shadow: 0 0 0 1px rgba(20, 31, 50, 0.14);
  cursor: pointer;
}

.source-text-color-option:hover,
.source-text-color-option:focus-visible {
  outline: none;
  transform: scale(1.12);
  box-shadow: 0 0 0 2px rgba(0, 112, 204, 0.3);
}

.upload-target {
  display: block;
  position: relative;
  width: 318px;
  height: 326px;
  padding: 16px 16px 52px;
  background: var(--paper);
  border-radius: 24px;
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-16);
  cursor: pointer;
  overflow: hidden;
}

.upload-target:hover {
  box-shadow: 0 0 0 2px var(--ps-blue), var(--shadow-16);
}

.upload-target::before {
  content: "";
  position: absolute;
  inset: 16px 16px 52px;
  border-radius: 19px;
  background:
    linear-gradient(160deg, rgba(0, 112, 204, 0.08), rgba(0, 0, 0, 0.02)),
    var(--ice);
}

.upload-target input {
  display: none;
}

.source-preview {
  position: absolute;
  inset: 16px 16px 52px;
  width: calc(100% - 32px);
  height: calc(100% - 68px);
  object-fit: cover;
  border-radius: 19px;
  opacity: 0;
  transition: opacity 180ms ease;
}

.source-preview.has-image {
  opacity: 1;
}

.source-document-preview,
.source-video-preview {
  position: absolute;
  inset: 16px 16px 52px;
  z-index: 2;
  border-radius: 19px;
}

.source-document-preview {
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(160deg, rgba(255, 255, 255, 0.78), rgba(0, 112, 204, 0.08)),
    var(--ice);
  box-shadow: inset 0 0 0 1px rgba(0, 112, 204, 0.16);
}

.source-video-preview {
  width: calc(100% - 32px);
  height: calc(100% - 68px);
  object-fit: cover;
  background: #000;
}

.source-document-frame {
  width: 140%;
  height: 140%;
  border: 0;
  transform: scale(0.72);
  transform-origin: center;
  background: #fff;
  pointer-events: none;
}

.source-document-cover {
  display: grid;
  place-items: center;
  gap: 8px;
  width: 100%;
  height: 100%;
  padding: 18px;
  text-align: center;
}

.source-document-cover p {
  margin: 0;
  max-width: 100%;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.source-document-cover span:not(.pptx-icon) {
  display: -webkit-box;
  max-width: 100%;
  color: var(--inkMuted);
  font-size: 12px;
  line-height: 1.45;
  overflow: hidden;
  line-clamp: 4;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
}

.image-card-actions {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 66px;
  z-index: 4;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
}

.upload-target.has-video-preview .image-card-actions,
.generated-video-wrap .image-card-actions {
  left: auto;
  right: 14px;
  bottom: 74px;
  flex-direction: column;
  gap: 8px;
  width: auto;
  align-items: flex-end;
}

.image-card-action {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  color: #ffffff;
  background: rgba(36, 39, 45, 0.42);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.22);
  opacity: 0;
  transform: translateY(8px) scale(0.96);
  cursor: pointer;
  transition: opacity 160ms ease, transform 160ms ease, background 160ms ease;
  pointer-events: auto;
}

.image-card-action svg {
  width: 22px;
  height: 22px;
}

.upload-target.has-video-preview .image-card-actions {
  left: auto;
  right: 22px;
  bottom: 66px;
  width: 48px;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.upload-target:hover .image-card-action,
.generated-image-wrap:hover .image-card-action,
.generated-node:hover .image-card-action,
.workbench-tour-force-actions .image-card-action {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.workbench-tour-demo-image-card {
  width: 360px;
  z-index: 16;
}

.workbench-tour-demo-blueprint-card {
  width: 220px;
  min-height: 92px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  border: 1px solid rgba(0, 112, 204, 0.18);
  border-radius: 22px;
  background: var(--paper);
  box-shadow: var(--shadow-08);
  z-index: 14;
}

.workbench-tour-demo-blueprint-card strong {
  color: var(--ink);
  font-size: 16px;
  font-weight: 600;
}

.workbench-tour-demo-blueprint-card span {
  color: var(--body);
  font-size: 13px;
}

.workbench-tour-demo-junction {
  z-index: 18;
}

.upload-target:not(.has-source-image):not(.has-video-preview) .image-card-actions {
  display: none;
}

.image-card-action:hover {
  background: rgba(0, 112, 204, 0.9);
  transform: translateY(0) scale(1.08);
}

.empty-state {
  position: absolute;
  inset: 16px 16px 52px;
  display: grid;
  place-content: center;
  gap: 8px;
  color: var(--charcoal);
  text-align: center;
  z-index: 1;
}

.empty-state strong {
  font-size: 20px;
  font-weight: 300;
}

.empty-state span {
  max-width: 210px;
  font-size: 14px;
  color: var(--body);
  line-height: 1.5;
}

.empty-state.hidden {
  display: none;
}

.node-caption {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--body);
  font-size: 12px;
  z-index: 2;
}

.source-node.is-text-mode .node-caption {
  z-index: 4;
}

.node-caption > span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.node-caption .research-dropdown-wrapper,
.node-caption .source-card-research-actions {
  flex: 0 0 auto;
}

.source-node.hide-research-actions .research-dropdown-wrapper,
.source-node.hide-research-actions .source-card-research-actions {
  display: none;
}

.node-resize-handle {
  position: absolute;
  z-index: 9;
  opacity: 0;
  transition: opacity 120ms ease, background 120ms ease;
}

.node:hover .node-resize-handle,
.node.resizing .node-resize-handle,
.node.rotating .node-resize-handle {
  opacity: 1;
}

.node.rotating {
  transition: none !important;
}

.node-resize-n,
.node-resize-s {
  left: 44px;
  right: 44px;
  height: 8px;
  cursor: ns-resize;
}

.node-resize-n { top: -4px; }
.node-resize-s { bottom: -4px; }

.node-resize-e,
.node-resize-w {
  top: 44px;
  bottom: 44px;
  width: 8px;
  cursor: ew-resize;
}

.node-resize-e { right: -4px; }
.node-resize-w { left: -4px; }

.node-resize-ne,
.node-resize-nw,
.node-resize-se,
.node-resize-sw {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: rgba(0, 112, 204, 0.12);
  border: 2px solid rgba(0, 112, 204, 0.24);
}

.node-resize-ne { top: -7px; right: -7px; cursor: nesw-resize; }
.node-resize-nw { top: -7px; left: -7px; cursor: nwse-resize; }
.node-resize-se { bottom: -7px; right: -7px; cursor: nwse-resize; }
.node-resize-sw { bottom: -7px; left: -7px; cursor: nesw-resize; }

.node-resize-ne:hover,
.node-resize-nw:hover,
.node-resize-se:hover,
.node-resize-sw:hover,
.node.resizing .node-resize-handle,
.node.rotating .node-resize-handle {
  background: rgba(0, 112, 204, 0.22);
}

#sourceName {
  min-width: 0;
  padding: 2px 4px;
  margin: -2px -4px;
}

.primary-button,
.generate-button,
.secondary-button,
.placeholder-link {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 400;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.primary-button,
.generate-button,
.placeholder-link {
  color: var(--paper);
  background: var(--ps-blue);
}

.primary-button:hover:not(:disabled),
.generate-button:hover:not(:disabled),
.secondary-button:hover:not(:disabled),
.placeholder-link:hover {
  background: var(--ps-cyan);
  color: var(--paper);
  transform: scale(1.12);
  box-shadow: var(--ring);
}

.primary-button:active:not(:disabled),
.generate-button:active:not(:disabled),
.secondary-button:active:not(:disabled),
.placeholder-link:active {
  opacity: 0.6;
}

.primary-button:disabled {
  color: #8f8f8f;
  background: #e2e2e2;
}

.analysis-node,
.option-node {
  width: 318px;
  padding: 30px;
  background: var(--paper);
  box-shadow: var(--shadow-08);
  border: 1px solid var(--divider);
  border-radius: 24px;
}

.option-node.deep-think-node {
  border-color: rgba(0, 112, 204, 0.22);
  box-shadow: 0 12px 26px rgba(0, 112, 204, 0.1);
}

.option-node[data-deep-think-type="agent"] {
  border-color: rgba(0, 112, 204, 0.34);
  background: linear-gradient(180deg, rgba(0, 112, 204, 0.05), var(--paper) 42%);
}

.analysis-node {
  min-height: 220px;
}

.hidden {
  display: none !important;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--body);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0;
}

.analysis-node h2,
.option-node h3 {
  margin: 0;
  color: var(--ink);
  letter-spacing: 0;
  font-weight: 300;
}

.analysis-node h2 {
  font-size: 24px;
}

.analysis-node p,
.option-description,
.generated-description {
  color: var(--charcoal);
  font-size: 15px;
  line-height: 1.72;
}

.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.keyword {
  padding: 6px 11px;
  color: var(--ps-blue);
  border: 1px solid rgba(0, 112, 204, 0.22);
  border-radius: 999px;
  background: rgba(0, 112, 204, 0.06);
  font-size: 12px;
  font-weight: 400;
}

.option-node {
  min-height: 256px;
  transition: transform 180ms ease, box-shadow 180ms ease;
  transform: rotate(calc(var(--tilt, 0deg) + var(--node-rotation, 0deg)));
}

.option-node:hover {
  box-shadow: var(--shadow-16);
}

.option-node h3 {
  font-size: 22px;
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.option-description {
  margin: 18px 0 22px;
}

.option-rich-content {
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ps-ink, #1f1f1f);
  max-width: 100%;
  overflow: hidden;
}
.option-rich-content[hidden] {
  display: none;
}

.option-action-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.option-action-row .generate-button {
  flex: 1;
}

.option-plan-steps {
  list-style: decimal;
  padding-left: 22px;
  margin: 0;
}
.option-plan-steps li {
  margin-bottom: 10px;
}
.option-plan-steps strong {
  display: block;
  font-weight: 600;
  margin-bottom: 2px;
}
.option-plan-steps p {
  margin: 0;
  color: #555;
  font-size: 12px;
}
.option-plan-section {
  margin: 0 0 10px;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(17, 24, 39, 0.04);
}
.option-plan-section h4 {
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted, #6b7280);
}
.option-plan-section p,
.option-plan-section ul {
  margin: 0;
  padding-left: 16px;
}
.option-plan-section p {
  padding-left: 0;
}
.option-plan-section li {
  margin: 2px 0;
}
.option-todo-items {
  list-style: none;
  padding-left: 0;
  margin: 0;
}
.option-todo-items li {
  display: flex;
  align-items: center;
  margin-bottom: 6px;
}
.option-todo-items input[type="checkbox"] {
  margin-right: 6px;
}
.option-todo-items .done {
  text-decoration: line-through;
  color: #999;
}
.option-note-text {
  margin: 0;
  white-space: normal;
}
.option-rich-content .markdown-body p,
.rich-body.markdown-body p,
.rich-plan-detail.markdown-body p {
  margin: 0 0 8px;
}
.option-rich-content .markdown-body ul,
.option-rich-content .markdown-body ol,
.rich-body.markdown-body ul,
.rich-body.markdown-body ol,
.rich-plan-detail.markdown-body ul,
.rich-plan-detail.markdown-body ol {
  margin: 0 0 8px;
  padding-left: 18px;
}
.option-weather-loc {
  font-weight: 600;
  margin-bottom: 4px;
}
.option-weather-temp {
  font-size: 18px;
  font-weight: 600;
  color: var(--ps-blue, #2563eb);
  margin-bottom: 4px;
}
.option-weather-forecast {
  color: #555;
}
.option-map-address {
  margin: 0 0 4px;
  font-weight: 500;
}
.option-map-latlng {
  margin: 0;
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  color: #777;
}
.option-link-href {
  display: inline-block;
  color: var(--ps-blue, #2563eb);
  text-decoration: none;
  word-break: break-all;
  margin-bottom: 4px;
}
.option-link-href:hover {
  text-decoration: underline;
}
.option-link-desc {
  margin: 0;
  color: #555;
}
.option-link-card {
  padding: 10px;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 12px;
  background: rgba(255,255,255,0.58);
}
.option-link-card .rich-link-desc {
  line-clamp: 2;
  -webkit-line-clamp: 2;
}
.option-code-block {
  background: #1e1e1e;
  color: #f5f5f5;
  padding: 10px;
  border-radius: 6px;
  overflow-x: auto;
  font-family: 'Space Mono', monospace;
  font-size: 12px;
  margin: 0;
}
.option-code-block code {
  font-family: inherit;
  background: transparent;
  color: inherit;
}

.option-node.loading {
  opacity: 1;
}

.option-node.loading::after {
  content: "";
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: 18px;
  height: 18px;
  border: 2px solid #d9d9d9;
  border-top-color: var(--ps-blue);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

.generated-node {
  width: 360px;
  padding: 14px 14px 22px;
  background: var(--paper);
  border: 1px solid var(--divider);
  border-radius: 24px;
  box-shadow: var(--shadow-08);
}

.generated-node .generated-image {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 19px;
  background: var(--ice);
}

.generated-node .generated-video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 19px;
  background: var(--ice);
}

.generated-image-wrap {
  position: relative;
  border-radius: 19px;
  overflow: hidden;
}

.generated-image-wrap .image-card-actions {
  left: 14px;
  right: 14px;
  bottom: 14px;
}

.generated-node .eyebrow,
.generated-node h3,
.generated-node .generated-description,
.generated-node .generated-actions {
  margin-left: 10px;
  margin-right: 10px;
}

.generated-node .eyebrow {
  margin-top: 18px;
  margin-bottom: 10px;
}

.generated-node h3 {
  margin-bottom: 10px;
  font-size: 22px;
  font-weight: 300;
}

.generated-node .generated-description {
  margin-top: 0;
  margin-bottom: 16px;
}

.generated-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.node.content-hidden {
  width: min(280px, var(--node-hidden-width, 280px)) !important;
  height: auto !important;
  min-height: 0 !important;
  padding: 14px 16px !important;
  overflow: visible;
  border-radius: 22px;
}

.node.content-hidden .source-tabs,
.node.content-hidden .upload-target,
.node.content-hidden .url-input-panel,
.node.content-hidden .source-text-panel,
.node.content-hidden .source-text-tools,
.node.content-hidden .option-description,
.node.content-hidden .option-rich-content,
.node.content-hidden .option-action-row,
.node.content-hidden .generated-image-wrap,
.node.content-hidden .generated-description,
.node.content-hidden .generated-actions,
.node.content-hidden .rich-back-button,
.node.content-hidden .rich-body,
.node.content-hidden .rich-actions,
.node.content-hidden #analysisSummary,
.node.content-hidden #keywordList {
  display: none !important;
}

.source-node.content-hidden {
  min-height: 0 !important;
  background: var(--paper);
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-08);
}

.source-node.content-hidden .node-caption {
  position: static;
  margin-top: 0;
  gap: 10px;
}

.node.content-hidden .node-caption,
.generated-node.content-hidden h3,
.option-node.content-hidden .option-title,
.rich-node.content-hidden .rich-title,
.analysis-node.content-hidden h2 {
  max-width: 100%;
}

.node.content-hidden .node-caption > span,
.generated-node.content-hidden h3,
.option-node.content-hidden .option-title,
.rich-node.content-hidden .rich-title,
.analysis-node.content-hidden h2 {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.option-node.content-hidden,
.generated-node.content-hidden,
.rich-node.content-hidden,
.analysis-node.content-hidden {
  display: block;
}

.option-node.content-hidden h3,
.generated-node.content-hidden h3,
.rich-node.content-hidden .rich-title,
.analysis-node.content-hidden h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
}

.option-node.content-hidden .eyebrow,
.generated-node.content-hidden .eyebrow,
.rich-node.content-hidden .rich-eyebrow {
  margin: 0 0 4px;
  font-size: 10px;
}

.node.content-hidden .source-card-research-actions,
.node.content-hidden .research-dropdown-wrapper {
  display: inline-flex;
}

.rich-summary {
  display: none;
}

.rich-node.content-hidden .rich-summary {
  display: block;
  margin: 0 0 12px;
  color: var(--body);
  line-height: 1.5;
}

.secondary-button {
  color: var(--ps-blue);
  background: var(--ice);
}

.statusbar {
  grid-area: main;
  position: relative;
  align-self: stretch;
  justify-self: end;
  display: flex;
  align-items: stretch;
  justify-content: stretch;
  width: var(--chat-sidebar-width);
  height: 100%;
  min-height: 0;
  overflow: hidden;
  padding: 0;
  border: none;
  pointer-events: none;
  z-index: 50;
  transition: opacity 180ms ease, transform 180ms ease;
}

.statusbar > * {
  pointer-events: auto;
}

.chat-sidebar-resize {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -5px;
  z-index: 120;
  width: 10px;
  cursor: ew-resize;
  touch-action: none;
}

.chat-sidebar-resize::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 4px;
  width: 1px;
  background: transparent;
  transition: background 160ms ease;
}

.chat-sidebar-resize:hover::before,
body.is-resizing-chat .chat-sidebar-resize::before {
  background: rgba(0, 112, 204, 0.42);
}

body.is-resizing-chat,
body.is-resizing-chat * {
  cursor: ew-resize !important;
  user-select: none !important;
}

body.is-resizing-chat-input,
body.is-resizing-chat-input * {
  cursor: ns-resize !important;
  user-select: none !important;
}

body.chat-sidebar-closed .viewport {
  margin-right: 0;
}

body.chat-sidebar-closed .statusbar {
  opacity: 0;
  transform: translateX(100%);
}

body.chat-sidebar-closed .statusbar > * {
  pointer-events: none;
}

.chatbar {
  position: relative;
  min-width: 0;
  min-height: 0;
  width: 100%;
  max-width: none;
  height: 100%;
  max-height: 100%;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  gap: 12px;
  background: rgba(255, 255, 255, 0.96);
  padding: 18px;
  border-left: 1px solid var(--divider);
  border-radius: 0;
  box-shadow: -18px 0 42px rgba(0, 0, 0, 0.14);
  backdrop-filter: blur(16px);
}

.chat-panel-header {
  min-width: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 40px;
}

.chat-panel-logo {
  color: var(--inkMuted);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1;
}

.chat-panel-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.chat-panel-button,
.chat-sidebar-toggle {
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: var(--inkMuted);
  background: transparent;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.chat-panel-button {
  width: 34px;
  height: 34px;
}

.chat-panel-button svg,
.chat-sidebar-toggle svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chat-panel-button:hover,
.chat-sidebar-toggle:hover {
  color: var(--ink);
  background: var(--ice);
  transform: scale(1.06);
}

.chat-panel-button.active,
.chatbar.subagents-enabled #chatAgentButton {
  color: var(--ps-blue);
  background: rgba(0, 112, 204, 0.1);
}

.chat-new-canvas-button {
  color: var(--ps-blue);
}

.chat-new-canvas-button:hover {
  background: rgba(0, 112, 204, 0.1);
}

.chat-panel-divider {
  width: 1px;
  height: 24px;
  background: var(--divider);
  margin: 0 2px;
}

.chat-sidebar-toggle {
  position: fixed;
  top: 18px;
  right: 18px;
  z-index: 90;
  width: 44px;
  height: 44px;
  background: var(--paper);
  border: 1px solid var(--divider);
  box-shadow: var(--shadow-16);
}

.chat-conversation-panel {
  position: absolute;
  top: 66px;
  left: 18px;
  right: 18px;
  z-index: 75;
  max-height: min(360px, 52vh);
  overflow-y: auto;
  padding: 8px;
  border: 1px solid var(--divider);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-16);
  backdrop-filter: blur(16px);
}

.agent-panel {
  position: absolute;
  top: 66px;
  left: 18px;
  right: 18px;
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--divider);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-16);
  backdrop-filter: blur(16px);
  z-index: 76;
}

.agent-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--ink);
}

.agent-panel-close {
  width: 28px;
  height: 28px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--inkMuted);
  cursor: pointer;
  font-size: 20px;
}

.agent-panel-close:hover {
  color: var(--ink);
  background: var(--ice);
}

.agent-subagents-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--inkMuted);
  font-size: 13px;
}

.agent-panel-note {
  margin: 0;
  color: var(--inkMuted);
  font-size: 12px;
  line-height: 1.55;
}

.chat-conversation-list {
  display: grid;
  gap: 6px;
}

.chat-conversation-empty {
  padding: 14px 12px;
  color: var(--inkMuted);
  font-size: 13px;
}

.chat-conversation-item {
  width: 100%;
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--ink);
  background: transparent;
  text-align: left;
}

.chat-conversation-item:hover,
.chat-conversation-item.active {
  background: var(--ice);
}

.chat-conversation-item.active {
  color: var(--ps-blue);
}

.chat-conversation-title,
.chat-conversation-meta {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-conversation-title {
  font-size: 14px;
  font-weight: 700;
}

.chat-conversation-meta {
  color: var(--inkMuted);
  font-size: 12px;
}

.chat-messages-wrap {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

.chat-messages {
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow-y: auto;
  scrollbar-gutter: stable;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 2px 10px 16px 2px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.55;
  white-space: normal;
}

.chat-messages::-webkit-scrollbar {
  width: 8px;
}

.chat-messages::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.18);
}

.chat-scroll-bottom {
  position: absolute;
  right: 16px;
  bottom: 14px;
  z-index: 4;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--divider);
  border-radius: 999px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow-16);
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.chat-scroll-bottom:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
}

.chat-scroll-bottom svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chat-placeholder {
  margin: auto 0;
  color: var(--inkMuted);
  font-size: 13px;
  line-height: 1.6;
}

.chat-placeholder strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.chat-placeholder p {
  margin: 0 0 14px;
}

.project-template-picker {
  display: grid;
  gap: 8px;
  margin: 0 0 14px;
}

.project-template-title {
  margin: 0;
  font-size: 13px;
}

.project-template-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.project-template-button {
  min-width: 0;
  min-height: 96px;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 9px;
  align-items: start;
  padding: 10px;
  border: 1px solid var(--divider);
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  text-align: left;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.project-template-button:hover,
.project-template-button:focus-visible {
  border-color: rgba(125, 82, 179, 0.34);
  background: rgba(125, 82, 179, 0.07);
  box-shadow: 0 8px 18px rgba(20, 31, 50, 0.08);
  outline: none;
  transform: translateY(-1px);
}

.project-template-button:disabled {
  cursor: default;
  opacity: 0.58;
  transform: none;
  box-shadow: none;
}

.project-template-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #4c3f69;
  background: rgba(125, 82, 179, 0.14);
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
}

.project-template-copy {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.project-template-label,
.project-template-desc,
.project-template-meta {
  min-width: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.project-template-label {
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.3;
}

.project-template-desc {
  color: var(--inkMuted);
  font-size: 12px;
  line-height: 1.35;
}

.project-template-meta {
  color: rgba(125, 82, 179, 0.82);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.25;
}

.chat-suggestion-list {
  display: grid;
  gap: 8px;
}

.chat-suggestion-button {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--divider);
  border-radius: 12px;
  color: var(--ink);
  background: var(--ice);
  font-size: 13px;
  line-height: 1.45;
  text-align: left;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.chat-suggestion-button:hover,
.chat-suggestion-button:focus-visible {
  border-color: rgba(0, 112, 204, 0.3);
  background: rgba(0, 112, 204, 0.06);
  box-shadow: 0 8px 18px rgba(20, 31, 50, 0.08);
  outline: none;
  transform: translateY(-1px);
}

.chat-line {
  display: grid;
  gap: 6px;
  max-width: 92%;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  overflow-wrap: anywhere;
}

.chat-line + .chat-line::before {
  content: none;
}

.chat-line.user {
  align-self: flex-end;
  color: var(--ink);
  max-width: 86%;
  padding: 10px 13px;
  border: 1px solid var(--divider);
  border-radius: 14px;
  background: var(--ice);
}

.chat-line.assistant {
  align-self: flex-start;
  min-width: 0;
  max-width: 100%;
  color: var(--ink);
  background: transparent;
}

.chat-line.pending .chat-text {
  display: block;
}

.chat-line.pending .chat-text::after {
  content: "";
  display: inline-block;
  width: 13px;
  height: 13px;
  margin-left: 8px;
  border-radius: 999px;
  border: 2px solid rgba(0, 112, 204, 0.18);
  border-top-color: var(--ps-blue);
  animation: spin 0.8s linear infinite;
  vertical-align: -2px;
}

.chat-text {
  display: block;
  min-width: 0;
  max-width: 100%;
  overflow-x: hidden;
  line-height: 1.68;
}

.chat-thinking {
  width: min(100%, 640px);
  margin-bottom: 8px;
}

.chat-thinking summary {
  list-style: none;
}

.chat-thinking summary::-webkit-details-marker {
  display: none;
}

.chat-thinking-bar {
  cursor: pointer;
  min-height: 28px;
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) 16px;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border: 1px solid var(--divider);
  border-radius: 10px;
  color: var(--inkMuted);
  background: rgba(248, 249, 251, 0.9);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.25;
  transition: border-color 160ms ease, background 160ms ease;
}

.chat-thinking-bar:hover {
  border-color: rgba(0, 112, 204, 0.28);
  background: #f5f8fc;
}

.chat-thinking-icon {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  border: 2px solid rgba(0, 112, 204, 0.2);
  border-top-color: var(--ps-blue);
}

.chat-line.pending .chat-thinking-icon,
.chat-thinking.is-running .chat-thinking-icon {
  animation: spin 0.8s linear infinite;
}

.chat-thinking.is-complete .chat-thinking-icon {
  border: none;
  border-radius: 0;
  animation: none;
  position: relative;
}

.chat-thinking.is-complete .chat-thinking-icon::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 1px;
  width: 8px;
  height: 12px;
  border-right: 2px solid var(--ps-blue);
  border-bottom: 2px solid var(--ps-blue);
  transform: rotate(42deg);
}

.chat-thinking-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-thinking-chevron {
  justify-self: end;
  color: var(--inkMuted);
  font-size: 22px;
  line-height: 1;
  transition: transform 160ms ease;
}

.chat-thinking[open] .chat-thinking-chevron {
  transform: rotate(90deg);
}

.chat-thinking-panel {
  max-height: min(360px, 44vh);
  overflow-y: auto;
  margin-top: 8px;
  padding: 14px 16px;
  border: 1px solid var(--divider);
  border-radius: 12px;
  background: rgba(248, 249, 251, 0.88);
  color: var(--inkMuted);
  font-size: 13px;
  line-height: 1.65;
}

.chat-thinking-panel pre {
  margin: 0;
  color: inherit;
  font: inherit;
  white-space: pre-wrap;
}

.chat-policy-trace {
  width: min(100%, 640px);
  margin-top: 8px;
  color: var(--inkMuted);
}

.chat-policy-trace summary {
  list-style: none;
}

.chat-policy-trace summary::-webkit-details-marker {
  display: none;
}

.chat-policy-trace-summary {
  cursor: pointer;
  min-height: 26px;
  padding: 4px 10px;
  border: 1px dashed rgba(0, 112, 204, 0.28);
  border-radius: 8px;
  background: rgba(0, 112, 204, 0.05);
  color: var(--ps-blue);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.25;
}

.chat-policy-trace-toolbar {
  display: flex;
  justify-content: flex-end;
  margin-top: 8px;
}

.chat-policy-trace-copy {
  border: 1px solid rgba(0, 112, 204, 0.22);
  border-radius: 999px;
  background: rgba(0, 112, 204, 0.06);
  color: var(--ps-blue);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  cursor: pointer;
}

.chat-policy-trace-copy:hover {
  background: rgba(0, 112, 204, 0.1);
}

.chat-policy-trace pre {
  max-height: min(300px, 38vh);
  overflow: auto;
  margin: 8px 0 0;
  padding: 12px;
  border: 1px solid rgba(0, 112, 204, 0.18);
  border-radius: 10px;
  background: rgba(248, 249, 251, 0.92);
  color: var(--inkMuted);
  font: 12px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
}

.chat-action-summary {
  margin-top: 4px;
  color: var(--ps-blue);
  font-size: 13px;
  font-weight: 700;
}

.chat-message-toolbar {
  display: flex;
  justify-content: flex-end;
  height: 0;
  min-height: 0;
  overflow: visible;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-2px);
  transition: opacity 140ms ease, transform 140ms ease;
}

.chat-line:hover .chat-message-toolbar,
.chat-line:focus-within .chat-message-toolbar {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.chat-message-tool,
.chat-action-inline-button,
.chat-action-confirmation-confirm,
.chat-action-confirmation-cancel {
  min-height: 26px;
  padding: 0 9px;
  border: 1px solid var(--divider);
  border-radius: 999px;
  color: var(--inkMuted);
  background: rgba(255, 255, 255, 0.86);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.chat-message-tool:hover,
.chat-action-inline-button:hover,
.chat-action-confirmation-cancel:hover {
  color: var(--ink);
  background: var(--ice);
}

.chat-action-inline-button {
  margin-left: auto;
  flex-shrink: 0;
}

.chat-action-inline-button.retry,
.chat-action-confirmation-confirm {
  color: var(--paper);
  border-color: var(--ps-blue);
  background: var(--ps-blue);
}

.chat-action-inline-button.retry:hover,
.chat-action-confirmation-confirm:hover {
  background: var(--ps-blue-hover);
}

.chat-action-confirmation,
.chat-action-progress,
.chat-references {
  width: min(100%, 640px);
  margin-top: 8px;
  border: 1px solid rgba(0, 112, 204, 0.16);
  border-radius: 12px;
  background: rgba(248, 249, 251, 0.92);
}

.chat-action-confirmation {
  display: grid;
  gap: 10px;
  padding: 12px;
}

.chat-action-confirmation > strong {
  color: var(--ink);
  font-size: 13px;
}

.chat-action-confirmation p {
  margin: 0;
  color: var(--inkMuted);
  font-size: 12px;
  line-height: 1.45;
}

.chat-action-confirmation-list,
.chat-action-progress-list,
.chat-references-list {
  display: grid;
  gap: 6px;
}

.chat-action-confirmation-item,
.chat-action-progress-item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding: 7px 8px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
}

.chat-action-confirmation-item span,
.chat-action-progress-body {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-action-confirmation-item small,
.chat-action-progress-state {
  color: var(--inkMuted);
  font-size: 11px;
  font-weight: 700;
}

.chat-action-confirmation-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.chat-action-progress {
  display: grid;
  gap: 9px;
  padding: 12px;
}

.chat-action-progress-header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--ink);
  font-size: 13px;
}

.chat-action-progress-header span {
  color: var(--inkMuted);
  font-size: 12px;
  font-weight: 800;
}

.chat-action-progress-track {
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(0, 112, 204, 0.1);
}

.chat-action-progress-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--ps-blue);
  transition: width 180ms ease;
}

.chat-action-progress-icon {
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  color: var(--paper);
  background: rgba(0, 112, 204, 0.42);
  font-size: 12px;
  font-weight: 900;
}

.chat-action-progress-item.status-running .chat-action-progress-icon {
  background: var(--ps-blue);
  animation: spin 0.9s linear infinite;
}

.chat-action-progress-item.status-done .chat-action-progress-icon {
  background: #17803d;
}

.chat-action-progress-item.status-failed .chat-action-progress-icon {
  background: var(--danger);
}

.chat-action-progress-item small {
  grid-column: 2 / -1;
  color: var(--danger);
  font-size: 11px;
}

.chat-references {
  overflow: hidden;
}

.chat-references summary {
  list-style: none;
}

.chat-references summary::-webkit-details-marker {
  display: none;
}

.chat-references-summary {
  cursor: pointer;
  padding: 9px 12px;
  color: var(--ps-blue);
  font-size: 12px;
  font-weight: 800;
}

.chat-references-list {
  padding: 0 12px 12px;
}

.chat-reference-item {
  display: grid;
  gap: 3px;
  padding: 8px;
  border-radius: 8px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}

.chat-reference-item:hover {
  background: rgba(0, 112, 204, 0.08);
}

.chat-reference-item strong,
.chat-reference-item span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-reference-item span {
  color: var(--inkMuted);
  font-size: 12px;
}

.chat-message-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  width: min(100%, 640px);
}

.chat-message-attachment {
  display: grid;
  gap: 6px;
  max-width: 220px;
  padding: 8px;
  border: 1px solid rgba(0, 112, 204, 0.18);
  border-radius: 12px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.72);
  text-decoration: none;
  font: inherit;
  text-align: left;
  cursor: default;
}

button.chat-message-attachment {
  cursor: pointer;
}

.chat-message-attachment img,
.chat-message-attachment video {
  width: 100%;
  max-height: 160px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--ice);
}

.chat-message-attachment-icon {
  display: grid;
  place-items: center;
  min-width: 64px;
  min-height: 44px;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--ps-blue);
  background: rgba(0, 112, 204, 0.08);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.chat-message-attachment span {
  color: var(--inkMuted);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.chat-artifacts {
  display: grid;
  gap: 8px;
  width: min(100%, 640px);
}

.chat-artifact-card {
  display: grid;
  gap: 4px;
  padding: 10px 12px;
  border: 1px solid rgba(0, 112, 204, 0.16);
  border-radius: 12px;
  color: var(--ink);
  background: rgba(0, 112, 204, 0.04);
  text-decoration: none;
}

.chat-artifact-card:hover {
  border-color: rgba(0, 112, 204, 0.36);
  background: rgba(0, 112, 204, 0.08);
}

.chat-artifact-image {
  width: 100%;
  max-height: 180px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--ice);
}

.chat-artifact-type {
  color: var(--ps-blue);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
}

.chat-artifact-summary {
  color: var(--inkMuted);
  font-size: 13px;
  line-height: 1.45;
}

.chat-compose {
  position: relative;
  min-width: 0;
  display: grid;
  gap: 0;
  padding-top: 12px;
  border-top: 1px solid var(--divider);
}

.chat-agent-card {
  min-width: 0;
  overflow: visible;
  border-radius: 10px;
  background: var(--paper);
  box-shadow: var(--shadow-08);
}

.chat-input-row {
  position: relative;
  min-width: 0;
  display: grid;
  grid-template-rows: minmax(var(--chat-input-height), auto) auto;
  gap: 8px;
  background: #f8f9fb;
  border: 1px solid rgba(0, 112, 204, 0.28);
  border-top: 4px solid var(--ps-blue);
  border-radius: 10px;
  padding: 12px 12px 12px;
  box-shadow: inset 0 0 0 1px rgba(0, 112, 204, 0.05);
}

.chat-input {
  display: block;
  width: 100%;
  min-width: 0;
  min-height: var(--chat-input-height);
  padding: 0;
  border: none;
  border-radius: 0;
  color: var(--ink);
  background: transparent;
  outline: none;
  resize: none;
  line-height: 1.45;
}

.chat-input-resize {
  position: absolute;
  left: 16px;
  right: 16px;
  top: -7px;
  z-index: 5;
  height: 12px;
  cursor: ns-resize;
  touch-action: none;
}

.chat-input-resize::before {
  content: "";
  position: absolute;
  left: 34%;
  right: 34%;
  top: 5px;
  height: 2px;
  border-radius: 999px;
  background: transparent;
  transition: background 160ms ease;
}

.chat-input-resize:hover::before,
body.is-resizing-chat-input .chat-input-resize::before {
  background: rgba(0, 112, 204, 0.36);
}

.chat-input.has-asr-draft {
  color: var(--ps-blue);
}

.chat-input:focus {
  box-shadow: none;
}

.chat-input-row.has-selection {
  border-color: rgba(0, 112, 204, 0.45);
  box-shadow: 0 0 0 3px rgba(0, 112, 204, 0.08);
}

.chat-input-actions {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chat-input-spacer {
  flex: 1;
  min-width: 10px;
}

.chat-action-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.chat-action-menu {
  position: absolute;
  left: 0;
  bottom: calc(100% + 10px);
  z-index: 80;
  width: min(236px, 74vw);
  display: grid;
  gap: 4px;
  padding: 7px;
  border: 1px solid var(--divider);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-16);
  backdrop-filter: blur(14px);
}

.chat-action-item {
  position: relative;
  width: 100%;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  min-height: 50px;
  padding: 8px;
  border-radius: 8px;
  color: var(--ink);
  background: transparent;
  text-align: left;
}

.chat-action-item:hover:not(:disabled) {
  background: var(--ice);
}

.chat-action-item:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.chat-action-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--paper);
  background: var(--ps-blue);
  font-size: 15px;
  font-weight: 700;
}

.chat-action-copy {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.chat-action-title {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-action-desc {
  position: fixed;
  z-index: 200;
  width: 220px;
  padding: 9px 11px;
  border: 1px solid var(--divider);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-16);
  color: var(--inkMuted);
  font-size: 12px;
  line-height: 1.35;
  opacity: 0;
  pointer-events: none;
  transform: translateX(4px);
  transition: opacity 160ms ease, transform 160ms ease;
}

.chat-action-item:hover .chat-action-desc,
.chat-action-item:focus-visible .chat-action-desc {
  opacity: 1;
  transform: translateX(0);
}

.deep-think-mode-chip {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 10px 0 9px;
  border-radius: 999px;
  color: var(--ps-blue);
  background: rgba(0, 112, 204, 0.08);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  transition: background 160ms ease, color 160ms ease;
}

.deep-think-mode-chip:hover {
  background: rgba(0, 112, 204, 0.13);
}

.deep-think-cancel {
  width: 0;
  height: 24px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  overflow: hidden;
  padding: 0;
  border-radius: 999px;
  color: var(--ps-blue);
  background: transparent;
  font-size: 17px;
  line-height: 1;
  opacity: 0;
  transition: width 160ms ease, opacity 160ms ease, background 160ms ease, color 160ms ease;
}

.deep-think-mode-chip:hover .deep-think-cancel,
.deep-think-mode-chip:focus-within .deep-think-cancel {
  width: 24px;
  opacity: 1;
}

.deep-think-cancel:hover {
  color: var(--paper);
  background: var(--ps-blue);
}

.deep-think-chip-icon {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.deep-think-chip-icon svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.deep-think-chip-label {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.command-menu {
  position: absolute;
  left: 0;
  right: 0;
  bottom: calc(100% + 10px);
  max-height: min(380px, 54vh);
  overflow-y: auto;
  padding: 8px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.16);
  backdrop-filter: blur(16px);
}

.command-item {
  width: 100%;
  display: grid;
  grid-template-columns: 32px 1fr;
  align-items: center;
  gap: 12px;
  min-height: 46px;
  padding: 7px 10px;
  border-radius: 8px;
  color: var(--ink);
  background: transparent;
  text-align: left;
}

.command-item:hover,
.command-item.is-active {
  background: var(--itemBg);
}

.command-icon {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--paper);
  background: var(--ps-blue);
  font-size: 13px;
  font-weight: 700;
}

.command-copy {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.command-title {
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
}

.command-description {
  color: var(--inkMuted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.command-empty {
  padding: 14px;
  color: var(--inkMuted);
  font-size: 13px;
}

html[data-theme="dark"] .command-menu {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(20, 20, 20, 0.96);
}

html[data-theme="dark"] .canvas-title-bar,
html[data-theme="dark"] .canvas-history-buttons,
html[data-theme="dark"] .canvas-quick-actions {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(24, 27, 32, 0.86);
}

html[data-theme="dark"] .canvas-title-display,
html[data-theme="dark"] .canvas-title-input,
html[data-theme="dark"] .canvas-quick-button {
  background: rgba(255, 255, 255, 0.08);
}

html[data-theme="dark"] .canvas-history-label,
html[data-theme="dark"] .canvas-zoom-hint,
html[data-theme="dark"] .canvas-link-hint {
  text-shadow: none;
}

html[data-theme="dark"] .chat-action-menu {
  border-color: var(--border);
  background: rgba(24, 27, 32, 0.98);
}

html[data-theme="dark"] .chat-action-desc {
  border-color: var(--border);
  background: rgba(24, 27, 32, 0.98);
}

html[data-theme="dark"] .chatbar {
  background: rgba(20, 20, 20, 0.96);
  border-left-color: var(--border);
}

html[data-theme="dark"] .chat-agent-card {
  background: #181b20;
}

html[data-theme="dark"] .junction-node {
  background: linear-gradient(135deg, var(--ps-cyan), var(--ps-blue));
  box-shadow: 0 8px 24px rgba(74, 168, 255, 0.3);
}

html[data-theme="dark"] .chat-review-button {
  background: #353b45;
}

html[data-theme="dark"] .chat-input-row {
  background: #181b20;
  border-color: rgba(74, 168, 255, 0.28);
  border-top-color: var(--ps-blue);
}

html[data-theme="dark"] .chat-conversation-panel {
  background: rgba(24, 27, 32, 0.98);
  border-color: var(--border);
}

html[data-theme="dark"] .project-template-button {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border);
}

html[data-theme="dark"] .project-template-button:hover,
html[data-theme="dark"] .project-template-button:focus-visible {
  background: rgba(74, 168, 255, 0.11);
  border-color: rgba(74, 168, 255, 0.32);
}

html[data-theme="dark"] .project-template-icon {
  color: #d9ccff;
  background: rgba(171, 139, 255, 0.18);
}

html[data-theme="dark"] .project-template-meta {
  color: rgba(216, 198, 255, 0.78);
}

html[data-theme="dark"] .chat-context-indicator,
html[data-theme="dark"] .chat-line.user,
html[data-theme="dark"] .chat-thinking-bar,
html[data-theme="dark"] .chat-thinking-panel,
html[data-theme="dark"] .chat-policy-trace-summary,
html[data-theme="dark"] .chat-policy-trace pre {
  background: var(--itemBg);
  border-color: var(--border);
}

html[data-theme="dark"] .chat-line.assistant {
  background: transparent;
  border-color: transparent;
}

html[data-theme="dark"] .chat-scroll-bottom {
  background: #181b20;
  border-color: var(--border);
}

.chat-context-indicator {
  min-width: 0;
  color: var(--inkMuted);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 8px 10px;
  border: 1px solid var(--divider);
  border-radius: 10px;
  background: var(--ice);
  opacity: 1;
  transition: opacity 180ms ease;
}

.chat-context-indicator.hidden {
  display: block !important;
  height: 0;
  min-height: 0;
  padding: 0;
  border-width: 0;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.chat-input:disabled {
  background: transparent;
  color: var(--muted);
  cursor: not-allowed;
  opacity: 0.6;
}

.chatbar.no-selection {
  opacity: 1;
}

.selection-toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(-12px);
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(32, 41, 57, 0.92);
  color: #ffffff;
  font-size: 14px;
  font-weight: 400;
  box-shadow: var(--shadow-16);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms ease, transform 220ms ease;
  z-index: 300;
  white-space: nowrap;
  backdrop-filter: blur(4px);
}

.selection-toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.confirm-modal {
  position: fixed;
  inset: 0;
  z-index: 260;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.confirm-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.52);
  backdrop-filter: blur(4px);
}

.confirm-modal-content {
  position: relative;
  width: min(420px, 100%);
  padding: 22px;
  border-radius: 22px;
  background: var(--paper);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-16);
  z-index: 1;
}

.confirm-modal-content h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 600;
}

.confirm-modal-content p {
  margin: 0;
  color: var(--body);
  font-size: 14px;
  line-height: 1.6;
}

.confirm-modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

.confirm-modal-actions button {
  min-height: 36px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  cursor: pointer;
}

.confirm-modal-cancel {
  background: var(--paper);
  color: var(--body);
}

.confirm-modal-confirm {
  background: var(--danger);
  color: var(--paper);
}

.material-import-modal {
  position: fixed;
  inset: 0;
  z-index: 270;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.material-import-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
}

.material-import-content {
  position: relative;
  width: min(520px, 100%);
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--paper);
  box-shadow: var(--shadow-16);
  z-index: 1;
}

.material-import-content h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
}

.material-import-content p {
  margin: 0 0 16px;
  color: var(--body);
  font-size: 13px;
  line-height: 1.5;
  word-break: break-word;
}

.material-import-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.material-import-choice {
  min-height: 104px;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  text-align: left;
  cursor: pointer;
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.material-import-choice:hover,
.material-import-choice:focus-visible {
  border-color: var(--ps-blue);
  box-shadow: 0 12px 26px rgba(0, 112, 204, 0.16);
  transform: translateY(-1px);
  outline: none;
}

.material-import-choice strong,
.material-import-choice span {
  display: block;
}

.material-import-choice strong {
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 14px;
}

.material-import-choice span {
  color: var(--body);
  font-size: 12px;
  line-height: 1.45;
}

.material-import-cancel {
  display: block;
  margin: 16px 0 0 auto;
  min-height: 34px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--paper);
  color: var(--body);
  cursor: pointer;
}

.file-import-progress-modal {
  position: fixed;
  inset: 0;
  z-index: 275;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.file-import-progress-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(5px);
}

.file-import-progress-content {
  position: relative;
  width: min(420px, 100%);
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: var(--paper);
  box-shadow: var(--shadow-16);
  z-index: 1;
}

.file-import-progress-content h3 {
  margin: 0 0 8px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 700;
}

.file-import-progress-text {
  min-height: 20px;
  margin: 0 0 14px;
  color: var(--body);
  font-size: 13px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.file-import-progress-track {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(0, 112, 204, 0.12);
}

.file-import-progress-track span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--ps-blue);
  transition: width 160ms ease;
}

.chat-attach-button {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: var(--ps-blue);
  background: transparent;
  font-size: 21px;
  font-weight: 500;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.chat-attach-button:hover {
  color: var(--ps-blue);
  background: rgba(0, 112, 204, 0.08);
  transform: scale(1.08);
}

.chat-attach-button:active,
.chat-attach-button:focus,
.chat-attach-button.is-open {
  color: var(--paper);
  background: var(--ps-blue);
  transform: scale(1.12);
  box-shadow: var(--ring);
}

.chat-voice-actions,
.chat-asr-review {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
}

.chat-asr-button,
.chat-realtime-button,
.chat-review-button {
  display: grid;
  place-items: center;
  flex-shrink: 0;
  border-radius: 999px;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.chat-asr-button {
  width: 34px;
  height: 34px;
  color: var(--ink);
  background: transparent;
  border-radius: 8px;
}

.chat-asr-button svg,
.chat-realtime-button svg,
.chat-review-button svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chat-asr-button:hover:not(:disabled),
.chat-asr-button.is-recording {
  color: var(--paper);
  background: var(--ps-blue);
  transform: scale(1.08);
  box-shadow: var(--ring);
}

.chat-realtime-button {
  width: 34px;
  height: 34px;
  color: var(--paper);
  background: var(--ps-blue);
  border-radius: 999px;
  box-shadow: 0 6px 14px rgba(0, 112, 204, 0.22);
}

.chat-realtime-button .chat-primary-send-icon {
  display: none;
}

.chat-realtime-button.has-text .chat-primary-voice-icon {
  display: none;
}

.chat-realtime-button.has-text .chat-primary-send-icon {
  display: block;
}

.chat-realtime-button.is-busy .chat-primary-voice-icon,
.chat-realtime-button.is-busy .chat-primary-send-icon {
  display: none;
}

.chat-realtime-button.is-busy::before {
  content: "";
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.45);
  border-top-color: var(--paper);
  border-radius: 999px;
  animation: chatButtonSpin 800ms linear infinite;
}

@keyframes chatButtonSpin {
  to {
    transform: rotate(360deg);
  }
}

.chat-realtime-button:hover:not(:disabled),
.chat-realtime-button.is-listening {
  background: var(--ps-blue-hover);
  transform: scale(1.08);
  box-shadow: var(--ring), 0 10px 22px rgba(0, 112, 204, 0.26);
}

.chat-asr-button.is-recording,
.chat-realtime-button.is-listening {
  animation: voicePulse 1200ms ease-in-out infinite;
}

.chat-review-button {
  width: 34px;
  height: 34px;
  color: var(--ink);
  background: #e3e6eb;
  border-radius: 8px;
}

.chat-review-button:hover {
  color: var(--paper);
  background: var(--ps-blue);
  transform: scale(1.08);
  box-shadow: var(--ring);
}

.chat-asr-button:disabled,
.chat-realtime-button:disabled,
.chat-review-button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
  transform: none;
  box-shadow: none;
}

html[data-theme="dark"] .chat-asr-button {
  color: var(--ps-blue);
}

html[data-theme="dark"] .chat-review-button {
  color: var(--ink);
}

.chat-generate-button {
  height: 34px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--ps-blue);
  background: var(--ice);
  font-size: 13px;
  font-weight: 400;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.chat-generate-button:hover:not(:disabled) {
  background: var(--ps-cyan);
  color: var(--paper);
  transform: scale(1.08);
  box-shadow: var(--ring);
}

.chat-generate-button:active:not(:disabled) {
  opacity: 0.6;
}

/* Thinking mode toggle */
.thinking-toggle-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.thinking-toggle {
  height: 34px;
  padding: 0 10px;
  border-radius: 999px;
  background: transparent;
  border: 1px solid rgba(0, 0, 0, 0.1);
  color: var(--inkMuted);
  font-size: 12px;
  font-weight: 400;
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.thinking-toggle:hover {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.18);
  color: var(--ink);
}

.thinking-toggle:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

.thinking-arrow {
  font-size: 10px;
  opacity: 0.7;
  transform: translateY(-1px);
}

.thinking-dropdown {
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  min-width: 80px;
  padding: 4px;
  border-radius: 12px;
  background: var(--paper);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-16);
  display: flex;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 60;
}

.thinking-toggle-wrapper:hover .thinking-dropdown,
.thinking-toggle-wrapper:focus-within .thinking-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.thinking-option {
  padding: 6px 10px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--ink);
  font-size: 12px;
  font-weight: 400;
  text-align: left;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
  white-space: nowrap;
}

.thinking-option:hover {
  background: var(--ice);
  color: var(--ps-blue);
}

.thinking-option.active {
  background: rgba(0, 112, 204, 0.08);
  color: var(--ps-blue);
  font-weight: 600;
}

/* Research dropdown */
.research-dropdown-wrapper {
  position: relative;
  display: inline-block;
}

.research-button {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 400;
  transition: background 160ms ease, color 160ms ease, transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
  color: var(--paper);
  background: var(--ps-blue);
  border: none;
  cursor: pointer;
  opacity: 1;
}

.research-button:hover:not(:disabled):not([aria-disabled="true"]) {
  background: var(--ps-cyan);
  color: var(--paper);
  transform: scale(1.12);
  box-shadow: var(--ring);
}

.research-button:active:not(:disabled):not([aria-disabled="true"]) {
  opacity: 0.6;
}

.research-button:disabled {
  color: #8f8f8f;
  background: #e2e2e2;
  cursor: not-allowed;
}

.research-button[aria-disabled="true"] {
  cursor: wait;
}

.research-button.is-busy {
  gap: 8px;
  color: var(--paper);
  background: var(--ps-blue);
  opacity: 1;
  cursor: wait;
  transform: none;
}

.research-button.is-busy::before {
  content: "";
  width: 12px;
  height: 12px;
  border: 2px solid rgba(255, 255, 255, 0.44);
  border-top-color: var(--paper);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

.source-card-research-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.source-card-research-actions .research-button {
  min-height: 30px;
  padding: 0 12px;
  font-size: 12px;
}

.source-card-research-actions .source-card-explore-button {
  background: var(--charcoal);
}

.research-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 140px;
  padding: 4px;
  border-radius: 12px;
  background: var(--paper);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-16);
  display: flex;
  flex-direction: column;
  gap: 2px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
  transform: translateY(4px);
  z-index: 60;
}

.research-dropdown::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -10px;
  height: 10px;
}

.research-dropdown-wrapper.is-open .research-dropdown,
.research-dropdown-wrapper:focus-within .research-dropdown,
.research-dropdown-wrapper:hover .research-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.research-option {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.research-option:hover {
  background: var(--ice);
  color: var(--ps-blue);
}

.option-label {
  font-size: 13px;
  font-weight: 400;
  white-space: nowrap;
}

.option-tooltip {
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  width: max-content;
  max-width: 220px;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--charcoal);
  color: var(--paper);
  font-size: 12px;
  line-height: 1.5;
  box-shadow: var(--shadow-16);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 70;
}

.option-tooltip::before {
  content: "";
  position: absolute;
  right: 100%;
  top: 50%;
  transform: translateY(-50%);
  border-width: 6px;
  border-style: solid;
  border-color: transparent var(--charcoal) transparent transparent;
}

.research-option:hover .option-tooltip {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

/* Dark mode compatibility for research dropdown */
html[data-theme="dark"] .research-button:disabled {
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.35);
}

html[data-theme="dark"] .research-dropdown {
  background: var(--paper);
  border-color: var(--border);
}

html[data-theme="dark"] .research-option:hover {
  background: var(--ice);
}

html[data-theme="dark"] .option-tooltip {
  background: var(--ink);
  color: var(--paper);
}

html[data-theme="dark"] .option-tooltip::before {
  border-color: transparent var(--ink) transparent transparent;
}

/* Dark mode compatibility */
html[data-theme="dark"] .thinking-toggle {
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--inkMuted);
}

html[data-theme="dark"] .thinking-toggle:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.22);
  color: var(--ink);
}

html[data-theme="dark"] .thinking-dropdown {
  background: var(--paper);
  border-color: var(--border);
}

html[data-theme="dark"] .thinking-option:hover {
  background: var(--ice);
}

.chat-generate-button:disabled {
  background: #e2e2e2;
  color: #8f8f8f;
  transform: none;
  box-shadow: none;
  cursor: not-allowed;
}

html[data-theme="dark"] .chat-generate-button:disabled {
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.35);
}

.status-cluster,
.status-readout {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-cluster {
  position: absolute;
  left: 30px;
  bottom: 30px;
  min-width: 0;
  gap: 24px;
  white-space: nowrap;
  color: rgba(255, 255, 255, 0.86);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
}

.status-dot.busy {
  background: var(--ps-cyan);
}

.status-dot.ready {
  background: var(--paper);
}

.status-dot.error {
  background: var(--danger);
}

.placeholder-page {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 32px;
  background:
    linear-gradient(rgba(0, 0, 0, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.035) 1px, transparent 1px),
    var(--ice);
  background-size: 48px 48px;
}

.placeholder-panel {
  width: min(560px, 100%);
  padding: 36px;
  border: 1px solid var(--divider);
  border-radius: 24px;
  background: var(--paper);
  box-shadow: var(--shadow-16);
}

.placeholder-panel h1 {
  margin: 0 0 14px;
  color: var(--ink);
  font-size: 34px;
  font-weight: 300;
  letter-spacing: 0;
}

.placeholder-panel p {
  color: var(--body);
  line-height: 1.7;
}

.placeholder-link {
  margin-top: 10px;
  text-decoration: none;
}

.session-panel {
  position: fixed;
  right: 0;
  top: 0;
  width: 340px;
  height: 100vh;
  background: var(--paper);
  border-left: 1px solid var(--divider);
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease;
  box-shadow: -18px 0 42px rgba(0, 0, 0, 0.16);
}

.session-panel.hidden {
  transform: translateX(100%);
}

.session-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--divider);
  font-weight: 400;
}

.session-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px;
}

.session-item {
  padding: 12px 14px;
  border-radius: 12px;
  cursor: pointer;
  margin-bottom: 8px;
  transition: background 160ms ease, box-shadow 160ms ease;
}

.session-item:hover {
  background: var(--ice);
}

.session-item.active {
  background: var(--ice);
  box-shadow: inset 4px 0 0 var(--ps-blue);
}

.session-item-title {
  font-size: 14px;
  font-weight: 400;
  color: var(--ink);
}

.session-item-meta {
  font-size: 12px;
  color: var(--inkMuted);
  margin-top: 2px;
}

.session-item-demo {
  display: inline-block;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--ps-blue);
  color: var(--paper);
  margin-left: 6px;
}

.source-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--itemBg);
  color: var(--inkMuted);
  margin-right: 6px;
  flex-shrink: 0;
}

.source-badge.image { background: #e6f4ea; color: #1e8e3e; }
.source-badge.text { background: #e8f0fe; color: #1967d2; }
.source-badge.document { background: #fce8e6; color: #c5221f; }
.source-badge.link { background: #f3e8fd; color: #7b1fa2; }
.source-badge.video { background: #fff3e0; color: #e65100; }

.settings-panel {
  position: fixed;
  right: 0;
  top: 0;
  width: 380px;
  height: 100vh;
  background: var(--paper);
  border-left: 1px solid var(--divider);
  z-index: 110;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease;
  box-shadow: -18px 0 42px rgba(0, 0, 0, 0.16);
}
.settings-panel.hidden {
  transform: translateX(100%);
}
.settings-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--divider);
  font-weight: 400;
}
.settings-tabs {
  display: flex;
  gap: 4px;
  padding: 12px 18px 0;
  border-bottom: 1px solid var(--divider);
}
.settings-tab {
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  background: transparent;
  color: var(--inkMuted);
  cursor: pointer;
  border: none;
  transition: background 160ms ease, color 160ms ease;
}
.settings-tab.active {
  background: var(--itemBg);
  color: var(--ink);
}
.settings-form {
  display: grid;
  gap: 16px;
  padding: 18px;
  overflow-y: auto;
}
.settings-form label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--inkMuted);
}
.settings-form input,
.settings-form select,
.settings-form textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  color: var(--ink);
  background: var(--paper);
}
.settings-form textarea {
  min-height: 74px;
  resize: vertical;
  line-height: 1.5;
}
.settings-form input:focus,
.settings-form select:focus,
.settings-form textarea:focus {
  outline: none;
  box-shadow: var(--ring);
}
.settings-advanced-fields {
  display: grid;
  gap: 12px;
  padding-top: 2px;
}
.settings-advanced-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 2px;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink);
}
.settings-field-hint {
  font-size: 12px;
  line-height: 1.35;
  color: var(--inkMuted);
}
.settings-option-row {
  display: grid;
  gap: 6px;
}
.settings-option-row.is-checkbox {
  grid-template-columns: 1fr auto;
  align-items: center;
}
.settings-option-row.is-checkbox .settings-field-hint {
  grid-column: 1 / -1;
}
.settings-option-row input[type="checkbox"] {
  width: 40px;
  height: 22px;
  appearance: none;
  border-radius: 999px;
  border: none;
  background: rgba(0, 0, 0, 0.14);
  position: relative;
  cursor: pointer;
  transition: background 160ms ease;
}
.settings-option-row input[type="checkbox"]::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--paper);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
  transition: transform 160ms ease;
}
.settings-option-row input[type="checkbox"]:checked {
  background: var(--ps-blue);
}
.settings-option-row input[type="checkbox"]:checked::after {
  transform: translateX(18px);
}
.settings-actions {
  display: flex;
  gap: 10px;
  padding-top: 8px;
}

.settings-section {
  padding: 0 4px;
}

.settings-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  cursor: pointer;
}

.settings-toggle-row input[type="checkbox"] {
  width: 40px;
  height: 22px;
  appearance: none;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  position: relative;
  cursor: pointer;
  transition: background 160ms ease;
}

.settings-toggle-row input[type="checkbox"]::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--paper);
  transition: transform 160ms ease;
}

.settings-toggle-row input[type="checkbox"]:checked {
  background: var(--ps-blue);
}

.settings-toggle-row input[type="checkbox"]:checked::after {
  transform: translateX(18px);
}

.image-viewer-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: stretch;
  justify-content: stretch;
  padding: 0;
}

.image-viewer-modal.hidden {
  display: none;
}

.image-viewer-backdrop {
  position: absolute;
  inset: 0;
  background: #f6f6f6;
}

.image-viewer-content {
  position: relative;
  max-width: none;
  max-height: none;
  width: 100%;
  min-height: 100vh;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  overflow: hidden;
  z-index: 1;
}

.image-viewer-close {
  position: absolute;
  top: 14px;
  left: 14px;
  right: auto;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: #111111;
  background: transparent;
  border: none;
  font-size: 30px;
  line-height: 1;
  z-index: 12;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.image-viewer-close:hover {
  background: rgba(0, 0, 0, 0.06);
  transform: scale(1.08);
}

.viewer-thumbnail-strip {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 88px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 72px 10px 80px 10px;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 2;
  scrollbar-width: thin;
  scrollbar-color: rgba(0,0,0,0.18) transparent;
}

.viewer-thumbnail-strip::-webkit-scrollbar {
  width: 4px;
}

.viewer-thumbnail-strip::-webkit-scrollbar-thumb {
  background: rgba(0,0,0,0.18);
  border-radius: 4px;
}

.viewer-thumbnail-item {
  flex-shrink: 0;
  width: 68px;
  height: 68px;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  background: #ffffff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.10);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.viewer-thumbnail-item:hover {
  border-color: rgba(0, 0, 0, 0.18);
}

.viewer-thumbnail-item.active {
  border-color: #0070cc;
  box-shadow: 0 0 0 2px rgba(0,112,204,0.22);
}

.viewer-thumbnail-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.viewer-image,
.viewer-video {
  position: absolute;
  left: 108px;
  right: 7.5vw;
  top: 92px;
  width: calc(100vw - 108px - 7.5vw);
  height: calc(100vh - 236px);
  max-height: none;
  object-fit: contain;
  background: #000;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.12);
}

.viewer-video {
  left: 50%;
  top: 50%;
  right: auto;
  width: auto;
  height: auto;
  max-width: calc(100vw - 108px - 7.5vw);
  max-height: calc(100vh - 236px);
  transform: translate(-50%, -50%);
  background: #111111;
}

.image-viewer-modal.is-video-viewer .viewer-thumbnail-strip,
.image-viewer-modal.is-video-viewer .viewer-mask-canvas,
.image-viewer-modal.is-video-viewer .viewer-tool-button,
.image-viewer-modal.is-video-viewer .viewer-aspect-control,
.image-viewer-modal.is-video-viewer #viewerRegenerate {
  display: none;
}

.viewer-mask-canvas {
  position: absolute;
  z-index: 4;
  display: block;
  pointer-events: none;
  touch-action: none;
  opacity: 0;
  cursor: crosshair;
}

.viewer-mask-canvas.active,
.viewer-mask-canvas.has-mask {
  opacity: 1;
}

.viewer-meta {
  padding: 0;
  display: block;
}

.viewer-meta h3 {
  position: absolute;
  left: 72px;
  top: 22px;
  max-width: 46vw;
  margin: 0;
  overflow: hidden;
  color: #202329;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.viewer-meta p {
  display: none;
}

@media (max-width: 640px) {
  .image-viewer-modal {
    padding: 0;
  }
  .image-viewer-content {
    border-radius: 0;
  }
  .viewer-meta {
    padding: 0;
  }
  .viewer-meta h3 {
    left: 58px;
    max-width: 36vw;
    font-size: 14px;
  }
  .viewer-actions {
    right: 10px;
    gap: 5px;
  }
  .viewer-actions .primary-button,
  .viewer-actions .secondary-button {
    min-height: 34px;
    padding: 0 10px;
    font-size: 12px;
  }
  .share-button {
    width: 34px;
    height: 34px;
  }
  .viewer-thumbnail-strip {
    width: 64px;
    padding: 64px 6px 70px 6px;
  }
  .viewer-thumbnail-item {
    width: 52px;
    height: 52px;
  }
  .viewer-image {
    left: 72px;
    right: 4vw;
    top: 72px;
    width: calc(100vw - 72px - 4vw);
    height: calc(100vh - 190px);
  }
  .viewer-modify-panel {
    width: calc(100vw - 24px);
    bottom: 16px;
    min-height: 44px;
    padding-left: 14px;
  }
  .viewer-modify-panel textarea {
    font-size: 14px;
  }
  .viewer-modify-actions .primary-button {
    width: 36px;
    min-width: 36px;
    height: 36px;
    min-height: 36px;
  }
}

.viewer-actions {
  position: absolute;
  top: 12px;
  right: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: nowrap;
  margin: 0;
  z-index: 8;
}

.viewer-tool-button {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 14px;
  border-radius: 999px;
  color: #101010;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: none;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.viewer-tool-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.viewer-tool-button:hover,
.viewer-tool-button.active {
  background: #f2f2f2;
  border-color: rgba(0, 0, 0, 0.2);
  transform: translateY(-1px);
}

.viewer-tool-button.hidden {
  display: none;
}

.viewer-aspect-control {
  position: relative;
}

.viewer-aspect-caret {
  font-size: 15px;
  line-height: 1;
}

.viewer-aspect-menu {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  min-width: 230px;
  display: grid;
  gap: 4px;
  padding: 14px;
  border-radius: 18px;
  background: #ffffff;
  color: #111111;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.14);
}

.viewer-aspect-menu.hidden {
  display: none;
}

.viewer-aspect-title {
  padding: 3px 2px 8px;
  color: rgba(0, 0, 0, 0.58);
  font-size: 14px;
  line-height: 1.3;
}

.viewer-aspect-menu button {
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: center;
  gap: 9px;
  min-height: 34px;
  padding: 4px 7px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: #111111;
  font-size: 15px;
  text-align: left;
  cursor: pointer;
}

.viewer-aspect-menu button:hover {
  background: rgba(0, 0, 0, 0.05);
}

.viewer-aspect-menu button span {
  width: 18px;
  height: 18px;
  border: 2px solid #111111;
  border-radius: 4px;
}

.viewer-aspect-menu button.active span {
  background: #111111;
  box-shadow: inset 0 0 0 4px #ffffff;
}

.viewer-aspect-menu em {
  color: rgba(0, 0, 0, 0.44);
  font-style: normal;
}

@media (max-width: 640px) {
  .viewer-tool-button {
    min-height: 34px;
    padding: 0 10px;
    font-size: 12px;
  }
  .viewer-tool-button svg {
    width: 16px;
    height: 16px;
  }
  .viewer-aspect-menu {
    right: -42px;
    min-width: 214px;
  }
}

.viewer-actions .primary-button,
.viewer-actions .secondary-button {
  min-height: 38px;
  padding: 0 16px;
  color: #101010;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: none;
}

.viewer-actions .primary-button:hover:not(:disabled),
.viewer-actions .secondary-button:hover:not(:disabled) {
  color: #101010;
  background: #f2f2f2;
  transform: translateY(-1px);
  box-shadow: none;
}

.share-button {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #000000;
  color: #ffffff;
  border: none;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease, box-shadow 160ms ease;
  padding: 0;
}

.share-button:hover {
  background: var(--ps-blue);
  transform: translateY(-1px) scale(1.06);
  box-shadow: none;
}

.share-button:active {
  opacity: 0.6;
}

.share-button:focus-visible {
  outline: none;
  box-shadow: var(--ring);
}

/* Dark mode compatibility */
html[data-theme="dark"] .share-button {
  background: var(--ps-blue);
  color: #ffffff;
}

html[data-theme="dark"] .share-button:hover {
  background: var(--ps-blue-hover);
}

.viewer-modify-panel {
  position: absolute;
  left: 50%;
  bottom: 28px;
  width: min(760px, 68vw);
  min-height: 48px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 6px 6px 6px 18px;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 999px;
  box-shadow: 0 12px 38px rgba(0, 0, 0, 0.12);
  transform: translateX(-50%);
  z-index: 4;
}

.viewer-modify-panel.hidden {
  display: none;
}

.viewer-modify-panel textarea {
  width: 100%;
  min-height: 34px;
  max-height: 72px;
  padding: 7px 0;
  border: none;
  border-radius: 0;
  font-size: 15px;
  line-height: 1.35;
  color: var(--ink);
  background: transparent;
  resize: none;
  font-family: inherit;
}

.viewer-modify-panel textarea:focus {
  outline: none;
  box-shadow: none;
}

.viewer-modify-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

.viewer-asr-button {
  width: 36px;
  min-width: 36px;
  height: 36px;
  min-height: 36px;
  padding: 0;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--body);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 160ms ease, color 160ms ease;
}

.viewer-asr-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.viewer-asr-button:hover {
  background: rgba(0, 0, 0, 0.06);
  color: var(--ink);
}

.viewer-asr-button.is-recording {
  color: #d53b00;
  background: rgba(213, 59, 0, 0.08);
}

.viewer-modify-actions .primary-button {
  width: 36px;
  min-width: 36px;
  height: 36px;
  min-height: 36px;
  padding: 0;
  border-radius: 50%;
  font-size: 0;
}

.viewer-modify-actions .primary-button::before {
  content: "↑";
  font-size: 20px;
  line-height: 1;
}

.image-share-modal {
  position: fixed;
  inset: 0;
  z-index: 220;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.image-share-modal.hidden {
  display: none;
}

.image-share-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(248, 248, 248, 0.66);
  backdrop-filter: blur(14px);
}

.image-share-content {
  position: relative;
  z-index: 1;
  width: min(720px, 92vw);
  max-height: 90vh;
  padding: 34px 38px 38px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  background: var(--paper);
  border: 1px solid var(--divider);
  border-radius: 36px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.2);
}

.image-share-close {
  position: absolute;
  top: 26px;
  right: 26px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  color: var(--ink);
  background: transparent;
  font-size: 28px;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.image-share-close:hover {
  background: var(--ice);
  transform: scale(1.06);
}

.image-share-content h3 {
  margin: 0;
  padding-right: 48px;
  color: var(--ink);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.05;
  font-weight: 650;
  letter-spacing: 0;
}

.share-preview-image,
.share-preview-video {
  display: block;
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  background: var(--ice);
  border-radius: 12px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}

.share-name-field {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--body);
  font-size: 13px;
}

.share-name-field span {
  white-space: nowrap;
}

.share-name-field input,
.share-link-input {
  width: 100%;
  min-width: 0;
  padding: 10px 13px;
  border: 1px solid var(--divider);
  border-radius: 999px;
  color: var(--ink);
  background: #f5f6f7;
  font: inherit;
}

.share-name-field input:focus,
.share-link-input:focus {
  outline: none;
  box-shadow: var(--ring);
  background: var(--paper);
}

.share-modal-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
  padding-top: 6px;
}

.share-round-action {
  min-width: 0;
  display: grid;
  align-items: center;
  justify-items: center;
  gap: 10px;
  padding: 0;
  border: none;
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}

.share-round-action:disabled {
  opacity: 0.58;
  cursor: progress;
}

.share-round-action span {
  width: 74px;
  height: 74px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #ffffff;
  background: #000000;
  font-size: 0;
  line-height: 0;
  position: relative;
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.18);
  transition: transform 160ms ease, background 160ms ease;
}

.share-round-action span::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 27px;
  height: 27px;
  transform: translate(-50%, -50%);
  background: currentColor;
  -webkit-mask: var(--share-icon) center / contain no-repeat;
  mask: var(--share-icon) center / contain no-repeat;
}

#shareCopyButton span {
  --share-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 13a5 5 0 0 0 7.1 0l2.1-2.1a5 5 0 0 0-7.1-7.1L11 4.9'/%3E%3Cpath d='M14 11a5 5 0 0 0-7.1 0l-2.1 2.1a5 5 0 0 0 7.1 7.1L13 19.1'/%3E%3C/svg%3E");
}

#shareRenameButton span {
  --share-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 7V4h16v3'/%3E%3Cpath d='M9 20h6'/%3E%3Cpath d='M12 4v16'/%3E%3C/svg%3E");
}

#shareDownloadButton span {
  --share-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3v12'/%3E%3Cpath d='m7 10 5 5 5-5'/%3E%3Cpath d='M5 21h14'/%3E%3C/svg%3E");
}

.share-round-action strong {
  font-size: 15px;
  font-weight: 500;
}

.share-round-action:hover span {
  background: var(--ps-blue);
  transform: translateY(-2px) scale(1.06);
}

.share-round-action:focus-visible {
  outline: none;
}

.share-round-action:focus-visible span {
  box-shadow: 0 0 0 4px rgba(0, 112, 204, 0.18), 0 16px 34px rgba(0, 0, 0, 0.18);
}

@media (max-width: 640px) {
  .image-share-content {
    padding: 28px;
    border-radius: 26px;
  }
  .share-modal-actions {
    gap: 10px;
  }
  .share-round-action span {
    width: 58px;
    height: 58px;
    font-size: 22px;
  }
}

/* Reference modal */
.reference-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.reference-modal .modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(4px);
}

.reference-modal .modal-content {
  position: relative;
  max-width: 640px;
  max-height: 80vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border-radius: 24px;
  box-shadow: var(--shadow-16);
  overflow: hidden;
  z-index: 1;
}

.reference-modal .modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: var(--charcoal);
  background: var(--paper);
  border: 1px solid var(--divider);
  font-size: 22px;
  line-height: 1;
  z-index: 2;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.reference-modal .modal-close:hover {
  background: var(--ice);
  transform: scale(1.08);
}

.reference-modal-title {
  margin: 0;
  padding: 20px 24px 12px;
  font-size: 20px;
  font-weight: 300;
  color: var(--ink);
  border-bottom: 1px solid var(--divider);
}

.reference-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.reference-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--itemBg);
  border: 1px solid var(--divider);
  border-radius: 14px;
  transition: background 160ms ease, border-color 160ms ease;
}

.reference-item:hover {
  background: var(--ice);
  border-color: rgba(0, 112, 204, 0.22);
}

.reference-item a {
  color: var(--ps-blue);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  word-break: break-all;
}

.reference-item a:hover {
  text-decoration: underline;
}

.reference-item p {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--body);
}

.ref-type-badge {
  display: inline-flex;
  align-self: flex-start;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  background: rgba(0, 112, 204, 0.1);
  color: var(--ps-blue);
}

/* Dark mode compatibility for reference modal */
html[data-theme="dark"] .reference-modal-title {
  border-color: var(--border);
}

html[data-theme="dark"] .reference-item {
  background: var(--itemBg);
  border-color: var(--border);
}

html[data-theme="dark"] .reference-item:hover {
  background: var(--ice);
  border-color: rgba(74, 168, 255, 0.22);
}

html[data-theme="dark"] .ref-type-badge {
  background: rgba(74, 168, 255, 0.12);
  color: var(--ps-blue);
}

@media (max-width: 640px) {
  .reference-modal {
    padding: 12px;
  }
  .reference-modal .modal-content {
    border-radius: 16px;
  }
  .reference-modal-title {
    padding: 16px 18px 10px;
    font-size: 18px;
  }
  .reference-list {
    padding: 10px 18px 18px;
  }
}

/* Blueprint modal — follows .reference-modal pattern */
.blueprint-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.blueprint-modal .modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(4px);
}

.blueprint-modal .modal-content {
  position: relative;
  width: 90vw;
  height: 85vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border-radius: 24px;
  box-shadow: var(--shadow-16);
  overflow: hidden;
  z-index: 1;
}

.blueprint-modal .modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  color: var(--charcoal);
  background: var(--paper);
  border: 1px solid var(--divider);
  font-size: 22px;
  line-height: 1;
  z-index: 10;
  cursor: pointer;
  transition: background 160ms ease, transform 160ms ease;
}

.blueprint-modal .modal-close:hover {
  background: var(--ice);
  transform: scale(1.08);
}

.blueprint-strength-panel {
  position: absolute;
  top: 64px;
  right: 18px;
  width: 210px;
  z-index: 12;
  padding: 12px;
  border: 1px solid var(--divider);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 8px 22px rgba(15, 23, 42, 0.12);
  backdrop-filter: blur(10px);
}

.blueprint-strength-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
}

.blueprint-strength-value {
  color: var(--ps-blue);
  font-variant-numeric: tabular-nums;
}

.blueprint-strength-panel input[type="range"] {
  width: 100%;
  margin: 8px 0 6px;
  accent-color: var(--ps-blue);
}

.blueprint-strength-panel p {
  margin: 0;
  font-size: 10px;
  line-height: 1.45;
  color: #111827;
}

.blueprint-guide {
  position: absolute;
  right: 24px;
  top: 190px;
  z-index: 12;
  width: 250px;
  pointer-events: none;
  text-align: right;
  color: #111827;
}

.blueprint-guide p {
  margin: 0 0 5px;
  font-size: 11px;
  line-height: 1.5;
}

.blueprint-modal-title {
  margin: 0;
  padding: 16px 24px 8px;
  font-size: 18px;
  font-weight: 300;
  color: var(--ink);
  border-bottom: 1px solid var(--divider);
  flex-shrink: 0;
}

.blueprint-canvas {
  flex: 1;
  position: relative;
  overflow: auto;
  background: var(--ice);
  padding: 24px;
  min-height: 0;
}

.blueprint-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 5;
}

.blueprint-card {
  position: absolute;
  width: 200px;
  background: var(--paper);
  border: 1px solid var(--divider);
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  cursor: grab;
  user-select: none;
  touch-action: none;
  z-index: 1;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.blueprint-card.dragging {
  cursor: grabbing;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.16);
  z-index: 10;
}

.blueprint-card .edge-handle {
  opacity: 0.5;
}

.blueprint-card:hover .edge-handle {
  opacity: 1;
}

.blueprint-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.blueprint-card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
  cursor: text;
}

.blueprint-card-title-input {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--ps-blue);
  border-radius: 6px;
  padding: 2px 6px;
  width: 100%;
  outline: none;
  flex: 1;
  min-width: 0;
}

.blueprint-card-badge {
  font-size: 10px;
  font-weight: 500;
  color: var(--ps-blue);
  background: rgba(0, 112, 204, 0.1);
  border: 1px solid rgba(0, 112, 204, 0.2);
  border-radius: 999px;
  padding: 2px 8px;
  white-space: nowrap;
  flex-shrink: 0;
}

.blueprint-card-desc {
  font-size: 11px;
  line-height: 1.5;
  color: var(--body);
  display: -webkit-box;
  line-clamp: 4;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blueprint-resize-handle {
  position: absolute;
  right: 4px;
  bottom: 4px;
  width: 14px;
  height: 14px;
  cursor: nwse-resize;
  background: linear-gradient(135deg, transparent 50%, var(--muted) 50%);
  border-radius: 0 0 10px 0;
  opacity: 0.45;
  transition: opacity 160ms ease;
  z-index: 2;
}

.blueprint-card:hover .blueprint-resize-handle {
  opacity: 0.85;
}

.blueprint-card-thumb {
  width: 100%;
  height: 100px;
  object-fit: cover;
  border-radius: 8px;
  background: var(--ice);
}

.blueprint-compose {
  flex-shrink: 0;
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 12px 16px 16px;
  border-top: 1px solid var(--divider);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
}

.blueprint-compose textarea {
  flex: 1;
  min-height: 42px;
  max-height: 120px;
  resize: vertical;
  border: 1px solid var(--divider);
  border-radius: 14px;
  padding: 11px 13px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  line-height: 1.45;
  outline: none;
}

.blueprint-compose textarea:focus {
  border-color: var(--ps-blue);
  box-shadow: 0 0 0 3px rgba(0, 112, 204, 0.12);
}

.blueprint-compose button {
  min-width: 78px;
  min-height: 42px;
  border: none;
  border-radius: 999px;
  padding: 0 18px;
  background: var(--ps-blue);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 160ms ease, filter 160ms ease, opacity 160ms ease;
}

.blueprint-compose button:hover:not(:disabled) {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

.blueprint-compose button:disabled,
.blueprint-compose textarea:disabled {
  opacity: 0.6;
  cursor: wait;
}

.blueprint-link {
  fill: none;
  stroke: var(--ps-blue);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: auto;
  cursor: pointer;
}

.blueprint-link:hover {
  stroke-width: 4;
  filter: drop-shadow(0 0 4px rgba(0, 112, 204, 0.4));
}

.blueprint-link.downstream {
  stroke: var(--ps-cyan);
}

.blueprint-link.directional {
  stroke-width: 2.8;
}

.blueprint-link.parallel {
  stroke: var(--muted);
  stroke-dasharray: 6 4;
}

.blueprint-relationship-note {
  position: absolute;
  z-index: 16;
  width: 230px;
  min-height: 74px;
  padding: 10px;
  border: 1px solid rgba(0, 112, 204, 0.22);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.14);
  backdrop-filter: blur(8px);
}

.blueprint-relationship-note textarea {
  width: 100%;
  min-height: 56px;
  resize: vertical;
  border: none;
  outline: none;
  background: transparent;
  color: var(--ink);
  font-size: 12px;
  line-height: 1.5;
}

.blueprint-note-remove {
  position: absolute;
  top: -8px;
  right: -8px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid var(--divider);
  border-radius: 999px;
  background: var(--paper);
  color: var(--muted);
  opacity: 0;
  cursor: pointer;
  transition: opacity 140ms ease, color 140ms ease, transform 140ms ease;
}

.blueprint-relationship-note:hover .blueprint-note-remove,
.blueprint-note-remove:focus {
  opacity: 1;
}

.blueprint-note-remove:hover {
  color: var(--danger, #d33);
  transform: scale(1.08);
}

.blueprint-drag-line {
  fill: none;
  stroke: var(--ps-blue);
  stroke-width: 2;
  stroke-dasharray: 8 4;
  pointer-events: none;
}

.blueprint-relationship-picker {
  position: absolute;
  display: flex;
  gap: 4px;
  background: var(--paper);
  border: 1px solid var(--divider);
  border-radius: 8px;
  padding: 4px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  z-index: 20;
}

.blueprint-relationship-picker button {
  padding: 4px 10px;
  border: 1px solid var(--divider);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  font-size: 11px;
  cursor: pointer;
  transition: background 120ms ease;
}

.blueprint-relationship-picker button:hover {
  background: var(--ice);
}

html[data-theme="dark"] .blueprint-card {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

html[data-theme="dark"] .blueprint-card.dragging {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

html[data-theme="dark"] .blueprint-strength-panel,
html[data-theme="dark"] .blueprint-relationship-note {
  background: rgba(17, 24, 39, 0.9);
}

html[data-theme="dark"] .blueprint-compose {
  background: rgba(17, 24, 39, 0.9);
}

@media (max-width: 600px) {
  .blueprint-modal .modal-content {
    width: 98vw;
    height: 95vh;
    border-radius: 12px;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes voicePulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(0, 112, 204, 0.26), var(--shadow-08);
  }
  50% {
    box-shadow: 0 0 0 7px rgba(0, 112, 204, 0.08), var(--shadow-08);
  }
}

@media (max-width: 820px) {
  :root {
    --chat-sidebar-width: 100%;
  }

  .app-shell {
    grid-template-columns: var(--nav-width) 1fr;
    grid-template-rows: 1fr;
  }

  .rail {
    padding: 14px 12px;
  }

  .viewport,
  .statusbar {
    grid-column: 2;
  }

  .viewport {
    margin-right: 0;
    margin-bottom: min(360px, 46vh);
  }

  body.chat-sidebar-closed .viewport {
    margin-bottom: 0;
  }

  .nav-settings-meta {
    display: none;
  }

  .statusbar {
    align-self: end;
    justify-self: stretch;
    width: 100%;
    height: min(360px, 46vh);
    padding: 0;
  }

  .chatbar {
    width: 100%;
    max-width: none;
    border-left: none;
    border-top: 1px solid var(--divider);
    border-radius: 18px 18px 0 0;
  }

  .project-template-grid {
    grid-template-columns: 1fr;
  }

  .status-cluster {
    display: none;
  }
}

/* ─── File Understanding Card ─── */

.file-understanding-body {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--divider);
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.fu-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.fu-abstract {
  margin: 0;
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.7;
}

.fu-block {
  background: var(--bg-tertiary);
  border-radius: 10px;
  padding: 10px 12px;
}

.fu-block h4 {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.fu-pages {
  margin: 0 0 6px;
  font-size: 12px;
  color: var(--text-secondary);
}

.fu-outline {
  margin: 0;
  padding-left: 16px;
  font-size: 12px;
  line-height: 1.8;
  color: var(--text-secondary);
}

.fu-outline li {
  margin-bottom: 2px;
}

.fu-materials {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.fu-page-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 8px;
}

.fu-page-card {
  min-height: 108px;
  padding: 9px;
  border: 1px solid var(--divider);
  border-radius: 8px;
  background: var(--bg-primary);
  overflow: hidden;
}

.fu-page-frame {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 7px;
  margin-bottom: 7px;
  border: 1px solid var(--divider);
  background: var(--bg-tertiary);
}

.fu-page-card strong,
.fu-page-card span,
.fu-page-card small {
  display: block;
}

.fu-page-card strong {
  color: var(--text-primary);
  font-size: 12px;
}

.fu-page-card span {
  margin-top: 3px;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.fu-page-card p {
  display: -webkit-box;
  margin: 5px 0;
  color: var(--text-tertiary);
  font-size: 11px;
  line-height: 1.45;
  overflow: hidden;
  line-clamp: 3;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.fu-page-card small {
  color: var(--text-tertiary);
  font-size: 10px;
}

.fu-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 500;
  background: var(--bg-primary);
  color: var(--text-secondary);
  border: 1px solid var(--divider);
}

.fu-badge-image {
  background: rgba(61, 154, 146, 0.1);
  color: #3d9a92;
  border-color: rgba(61, 154, 146, 0.25);
}

.fu-badge-table {
  background: rgba(189, 69, 60, 0.08);
  color: #bd453c;
  border-color: rgba(189, 69, 60, 0.2);
}

.fu-badge-chart {
  background: rgba(217, 188, 104, 0.12);
  color: #9a7d28;
  border-color: rgba(217, 188, 104, 0.25);
}

.fu-scanned {
  background: rgba(217, 188, 104, 0.1);
  border: 1px dashed rgba(217, 188, 104, 0.4);
}

.fu-scanned p {
  margin: 0;
  font-size: 12px;
  color: #9a7d28;
}

.fu-ocr p,
.fu-qa-block p,
.fu-transcript {
  margin: 0;
  font-size: 12px;
  color: var(--text-secondary);
}

.fu-transcript.muted {
  color: var(--text-tertiary);
}

/* Document preview */
.document-preview {
  margin-top: 8px;
  width: 100%;
  height: 180px;
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg-tertiary);
  border: 1px solid var(--divider);
}

.document-embed {
  width: 100%;
  height: 100%;
  border: none;
  background: var(--bg-tertiary);
}

.pptx-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  text-align: center;
}

.pptx-icon {
  font-size: 36px;
  line-height: 1;
}

.pptx-name {
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  word-break: break-all;
}

.pptx-hint {
  margin: 0;
  font-size: 11px;
  color: var(--text-tertiary);
}

.text-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.text-preview p {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

/* Direction type variations on option nodes */
.option-node[data-direction-type="research"] {
  border-left: 3px solid #786f9d;
}

.option-node[data-direction-type="task-plan"] {
  border-left: 3px solid #3d9a92;
}

.option-node[data-direction-type="web-analysis"] {
  border-left: 3px solid #4d8a8b;
}

.option-node[data-direction-type="report-structure"] {
  border-left: 3px solid #d9bc68;
}

.option-node[data-direction-type="material-collection"] {
  border-left: 3px solid #bd453c;
}

.option-node[data-direction-type="image-generation"] {
  border-left: 3px solid #d15d4a;
}

/* Card search bar */
.card-search-bar {
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  margin-bottom: 6px;
  background: var(--paper);
  border: 1px solid var(--divider);
  border-radius: 12px;
  box-shadow: var(--shadow-16);
  z-index: 30;
  overflow: hidden;
}

.card-search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.card-search-input {
  width: 100%;
  padding: 10px 42px 10px 14px;
  border: none;
  outline: none;
  font-size: 14px;
  color: var(--ink);
  background: transparent;
}

.card-search-input::placeholder {
  color: var(--muted);
}

.card-search-close {
  position: absolute;
  top: 50%;
  right: 8px;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  font-size: 18px;
  line-height: 1;
  opacity: 0;
  transform: translateY(-50%) scale(0.92);
  transition: opacity 120ms ease, transform 120ms ease, background 120ms ease, color 120ms ease, border-color 120ms ease;
}

.card-search-bar:hover .card-search-close,
.card-search-close:focus-visible {
  opacity: 1;
  transform: translateY(-50%) scale(1);
}

.card-search-close:hover,
.card-search-close:focus-visible {
  color: var(--ink);
  background: var(--ice);
  border-color: var(--divider);
}

.card-search-results {
  max-height: 200px;
  overflow-y: auto;
  border-top: 1px solid var(--divider);
}

.card-search-empty {
  padding: 12px 14px;
  font-size: 13px;
  color: var(--body);
}

.card-search-item {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 8px 14px;
  border: none;
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: background 120ms ease;
}

.card-search-item:hover {
  background: var(--ice);
}

.card-search-item-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
}

.card-search-item-id {
  font-size: 11px;
  color: var(--muted);
}

/* Chat attachment preview */
.chat-attachment-preview {
  display: flex;
  gap: 8px;
  padding: 6px 10px;
  overflow-x: auto;
}

.chat-attachment-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  background: var(--ice);
  border: 1px solid var(--divider);
  border-radius: 8px;
  cursor: pointer;
  transition: background 120ms ease;
  flex-shrink: 0;
}

.chat-attachment-chip:hover {
  background: var(--divider);
}

.chat-attachment-thumb {
  width: 28px;
  height: 28px;
  object-fit: cover;
  border-radius: 4px;
}

.chat-attachment-icon {
  font-size: 16px;
  line-height: 1;
}

.chat-attachment-name {
  font-size: 12px;
  color: var(--body);
  max-width: 120px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-attachment-remove {
  width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
}

.chat-attachment-remove:hover {
  background: var(--divider);
  color: var(--danger);
}

/* Attachment preview modal */
.attachment-preview-modal {
  position: fixed;
  inset: 0;
  z-index: 250;
  display: flex;
  align-items: center;
  justify-content: center;
}

.attachment-preview-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(4px);
}

.attachment-preview-content {
  position: relative;
  z-index: 1;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.attachment-preview-close {
  position: absolute;
  top: -40px;
  right: 0;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: none;
  background: var(--paper);
  color: var(--charcoal);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  box-shadow: var(--shadow-08);
}

.attachment-preview-close:hover {
  background: var(--ice);
}

.attachment-preview-img {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
}

.attachment-preview-video {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 16px;
  background: #000;
  box-shadow: var(--shadow-08);
}

.attachment-preview-frame {
  width: min(860px, 90vw);
  height: min(760px, 86vh);
  border: 0;
  border-radius: 16px;
  background: var(--paper);
  box-shadow: var(--shadow-08);
}

.attachment-preview-document {
  display: grid;
  gap: 12px;
  width: min(420px, 86vw);
  padding: 36px;
  border-radius: 22px;
  color: var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow-08);
  text-align: center;
}

.attachment-preview-document strong {
  color: var(--ps-blue);
  font-size: 28px;
  letter-spacing: 0.12em;
}

.attachment-preview-document span {
  color: var(--inkMuted);
  overflow-wrap: anywhere;
}

.attachment-preview-text {
  max-width: min(760px, 88vw);
  max-height: 78vh;
  overflow: auto;
  margin: 0;
  padding: 18px;
  border-radius: 12px;
  color: var(--ink);
  background: var(--paper);
  box-shadow: var(--shadow-16);
  white-space: pre-wrap;
}

/* ── Task-type badges on direction cards ── */
.card-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 5;
  pointer-events: none;
}

.badge-visual {
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: white;
}

.badge-research {
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  color: white;
}

.badge-planning {
  background: linear-gradient(135deg, #22c55e, #10b981);
  color: white;
}

.badge-creative {
  background: linear-gradient(135deg, #f472b6, #fb923c);
  color: white;
}

.badge-general {
  background: #6b7280;
  color: white;
}

html[data-theme="dark"] .badge-general {
  background: #9ca3af;
  color: #1f1f1f;
}

/* ── Rich Node Types ── */
.rich-node {
  width: 360px;
  padding: 20px 22px 18px;
  background: var(--paper);
  border: 1px solid var(--divider);
  border-radius: 20px;
  box-shadow: var(--shadow-08);
  min-height: auto;
}

.rich-node .rich-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
  padding-top: 14px;
}

.rich-back-button {
  position: absolute;
  left: 12px;
  top: 10px;
  z-index: 3;
  min-height: 26px;
  padding: 3px 10px;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 999px;
  background: rgba(255,255,255,0.72);
  color: var(--ink);
  font-size: 12px;
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.rich-back-button:hover {
  background: rgba(255,255,255,0.92);
}

.rich-node .rich-eyebrow {
  margin: 0;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  opacity: 0.7;
}

.rich-node .rich-title {
  margin: 0 0 4px;
  font-size: 20px;
  font-weight: 500;
  color: var(--ink);
  line-height: 1.3;
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.rich-node .rich-body {
  font-size: 14px;
  line-height: 1.6;
  color: var(--charcoal);
  overflow-wrap: break-word;
}

.rich-node .rich-actions {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px solid var(--divider);
}

.rich-node .rich-actions button {
  font-size: 12px;
  padding: 6px 12px;
}

/* Note */
.rich-node-note {
  background: linear-gradient(180deg, #fef9c3 0%, #fef08a 100%);
  border-color: rgba(234, 179, 8, 0.25);
}

html[data-theme="dark"] .rich-node-note {
  background: linear-gradient(180deg, #422006 0%, #713f12 100%);
  border-color: rgba(234, 179, 8, 0.3);
}

.rich-node-note .rich-title,
.rich-node-note .rich-body {
  color: #422006;
}

html[data-theme="dark"] .rich-node-note .rich-title,
html[data-theme="dark"] .rich-node-note .rich-body {
  color: #fef9c3;
}

/* Plan */
.rich-node-plan {
  background: linear-gradient(180deg, #e0f2fe 0%, #bae6fd 100%);
  border-color: rgba(14, 165, 233, 0.25);
}

html[data-theme="dark"] .rich-node-plan {
  background: linear-gradient(180deg, #082f49 0%, #0c4a6e 100%);
  border-color: rgba(14, 165, 233, 0.3);
}

.rich-node-plan .rich-title,
.rich-node-plan .rich-body {
  color: #0c4a6e;
}

html[data-theme="dark"] .rich-node-plan .rich-title,
html[data-theme="dark"] .rich-node-plan .rich-body {
  color: #e0f2fe;
}

.rich-plan-steps {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rich-plan-step {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 10px;
  background: rgba(255,255,255,0.55);
  border-radius: 10px;
}

html[data-theme="dark"] .rich-plan-step {
  background: rgba(0,0,0,0.25);
}

.rich-plan-num {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  background: var(--ps-blue);
  color: white;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.rich-plan-text {
  flex: 1;
}

.rich-plan-text strong {
  font-weight: 500;
}

.rich-plan-text p {
  margin: 2px 0 0;
  font-size: 12px;
  opacity: 0.8;
}

/* Todo */
.rich-node-todo {
  background: linear-gradient(180deg, #f3e8ff 0%, #e9d5ff 100%);
  border-color: rgba(168, 85, 247, 0.25);
}

html[data-theme="dark"] .rich-node-todo {
  background: linear-gradient(180deg, #3b0764 0%, #581c87 100%);
  border-color: rgba(168, 85, 247, 0.3);
}

.rich-node-todo .rich-title,
.rich-node-todo .rich-body {
  color: #581c87;
}

html[data-theme="dark"] .rich-node-todo .rich-title,
html[data-theme="dark"] .rich-node-todo .rich-body {
  color: #f3e8ff;
}

.rich-todo-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rich-todo-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  background: rgba(255,255,255,0.55);
  border-radius: 8px;
  transition: opacity 180ms ease;
}

html[data-theme="dark"] .rich-todo-item {
  background: rgba(0,0,0,0.25);
}

.rich-todo-item.rich-todo-done {
  opacity: 0.55;
}

.rich-todo-item.rich-todo-done .rich-todo-text {
  text-decoration: line-through;
}

.rich-todo-check {
  width: 16px;
  height: 16px;
  accent-color: var(--ps-blue);
  cursor: pointer;
  flex-shrink: 0;
}

.rich-todo-text {
  flex: 1;
  font-size: 13px;
}

/* Weather */
.rich-node-weather {
  background: linear-gradient(180deg, #ecfeff 0%, #cffafe 100%);
  border-color: rgba(6, 182, 212, 0.25);
}

html[data-theme="dark"] .rich-node-weather {
  background: linear-gradient(180deg, #083344 0%, #164e63 100%);
  border-color: rgba(6, 182, 212, 0.3);
}

.rich-node-weather .rich-title,
.rich-node-weather .rich-body {
  color: #164e63;
}

html[data-theme="dark"] .rich-node-weather .rich-title,
html[data-theme="dark"] .rich-node-weather .rich-body {
  color: #ecfeff;
}

.rich-weather-wrap {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 14px;
  align-items: center;
}

.rich-weather-icon {
  grid-row: span 2;
  font-size: 42px;
  line-height: 1;
}

.rich-weather-temp {
  font-size: 28px;
  font-weight: 300;
  letter-spacing: -1px;
}

.rich-weather-location {
  font-size: 12px;
  opacity: 0.75;
}

.rich-weather-forecast {
  grid-column: span 2;
  font-size: 12px;
  line-height: 1.5;
  opacity: 0.85;
  margin-top: 4px;
}

/* Map */
.rich-node-map {
  background: linear-gradient(180deg, #f0fdf4 0%, #dcfce7 100%);
  border-color: rgba(34, 197, 94, 0.25);
}

html[data-theme="dark"] .rich-node-map {
  background: linear-gradient(180deg, #052e16 0%, #14532d 100%);
  border-color: rgba(34, 197, 94, 0.3);
}

.rich-node-map .rich-title,
.rich-node-map .rich-body {
  color: #14532d;
}

html[data-theme="dark"] .rich-node-map .rich-title,
html[data-theme="dark"] .rich-node-map .rich-body {
  color: #f0fdf4;
}

.rich-map-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rich-map-img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 10px;
  background: var(--ice);
}

.rich-map-coord {
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  opacity: 0.8;
}

.rich-map-link {
  font-size: 12px;
  color: var(--ps-blue);
  text-decoration: none;
}

.rich-map-link:hover {
  text-decoration: underline;
}

/* Link */
.rich-node-link {
  background: linear-gradient(180deg, #fff7ed 0%, #ffedd5 100%);
  border-color: rgba(249, 115, 22, 0.25);
}

html[data-theme="dark"] .rich-node-link {
  background: linear-gradient(180deg, #431407 0%, #7c2d12 100%);
  border-color: rgba(249, 115, 22, 0.3);
}

.rich-node-link .rich-title,
.rich-node-link .rich-body {
  color: #7c2d12;
}

html[data-theme="dark"] .rich-node-link .rich-title,
html[data-theme="dark"] .rich-node-link .rich-body {
  color: #fff7ed;
}

.rich-link-wrap {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  max-width: 100%;
  min-width: 0;
  text-decoration: none;
  color: inherit;
}

.rich-link-meta {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.rich-link-favicon {
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  border-radius: 6px;
  background: rgba(255,255,255,0.7);
  object-fit: contain;
}

.rich-link-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 10px;
  background: var(--ice);
}

.rich-link-title {
  font-weight: 500;
  font-size: 14px;
  line-height: 1.35;
  max-width: 100%;
  overflow: hidden;
  overflow-wrap: anywhere;
  word-break: break-word;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.rich-link-desc {
  font-size: 12px;
  line-height: 1.45;
  opacity: 0.75;
  display: -webkit-box;
  line-clamp: 3;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  overflow-wrap: anywhere;
}

.rich-link-url {
  font-size: 11px;
  opacity: 0.55;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  max-width: 100%;
  overflow: hidden;
  overflow-wrap: anywhere;
  word-break: break-all;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

/* Code */
.rich-node-code {
  background: linear-gradient(180deg, #1e1e2e 0%, #181825 100%);
  border-color: rgba(88, 91, 112, 0.5);
  color: #cdd6f4;
}

.rich-node-code .rich-title,
.rich-node-code .rich-body,
.rich-node-code .rich-eyebrow {
  color: #cdd6f4;
}

.rich-node-code .rich-actions {
  border-top-color: rgba(88, 91, 112, 0.4);
}

.rich-code-block {
  margin: 0;
  padding: 12px 14px;
  background: #11111b;
  border-radius: 10px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  line-height: 1.55;
}

.rich-code-block code {
  background: transparent;
  padding: 0;
  font-family: inherit;
}

.rich-node-table,
.rich-node-timeline,
.rich-node-comparison,
.rich-node-metric,
.rich-node-quote {
  border-color: rgba(20, 184, 166, 0.24);
}

.rich-node-table { background: linear-gradient(180deg, #f0fdfa 0%, #ccfbf1 100%); }
.rich-node-timeline { background: linear-gradient(180deg, #f5f3ff 0%, #ddd6fe 100%); }
.rich-node-comparison { background: linear-gradient(180deg, #fffbeb 0%, #fde68a 100%); }
.rich-node-metric { background: linear-gradient(180deg, #ecfdf5 0%, #bbf7d0 100%); }
.rich-node-quote { background: linear-gradient(180deg, #fdf2f8 0%, #fbcfe8 100%); }

html[data-theme="dark"] .rich-node-table { background: linear-gradient(180deg, #042f2e 0%, #134e4a 100%); }
html[data-theme="dark"] .rich-node-timeline { background: linear-gradient(180deg, #2e1065 0%, #4c1d95 100%); }
html[data-theme="dark"] .rich-node-comparison { background: linear-gradient(180deg, #451a03 0%, #78350f 100%); }
html[data-theme="dark"] .rich-node-metric { background: linear-gradient(180deg, #052e16 0%, #14532d 100%); }
html[data-theme="dark"] .rich-node-quote { background: linear-gradient(180deg, #500724 0%, #831843 100%); }

.rich-node-table .rich-title,
.rich-node-table .rich-body { color: #134e4a; }
.rich-node-timeline .rich-title,
.rich-node-timeline .rich-body { color: #4c1d95; }
.rich-node-comparison .rich-title,
.rich-node-comparison .rich-body { color: #78350f; }
.rich-node-metric .rich-title,
.rich-node-metric .rich-body { color: #14532d; }
.rich-node-quote .rich-title,
.rich-node-quote .rich-body { color: #831843; }

html[data-theme="dark"] .rich-node-table .rich-title,
html[data-theme="dark"] .rich-node-table .rich-body,
html[data-theme="dark"] .rich-node-timeline .rich-title,
html[data-theme="dark"] .rich-node-timeline .rich-body,
html[data-theme="dark"] .rich-node-comparison .rich-title,
html[data-theme="dark"] .rich-node-comparison .rich-body,
html[data-theme="dark"] .rich-node-metric .rich-title,
html[data-theme="dark"] .rich-node-metric .rich-body,
html[data-theme="dark"] .rich-node-quote .rich-title,
html[data-theme="dark"] .rich-node-quote .rich-body {
  color: rgba(255,255,255,0.92);
}

.rich-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border-radius: 10px;
}

.rich-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  background: rgba(255,255,255,0.45);
}

.rich-table th,
.rich-table td {
  border: 1px solid rgba(0,0,0,0.08);
  padding: 7px 8px;
  text-align: left;
  max-width: 180px;
  overflow-wrap: anywhere;
}

.rich-table th {
  font-weight: 600;
  background: rgba(255,255,255,0.55);
}

.rich-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rich-timeline-item {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 10px;
  padding: 8px 10px;
  border-radius: 10px;
  background: rgba(255,255,255,0.52);
}

.rich-timeline-time {
  font-size: 11px;
  opacity: 0.7;
}

.rich-timeline-body strong,
.rich-comparison-item strong {
  display: block;
  font-weight: 600;
  margin-bottom: 3px;
}

.rich-timeline-body p,
.rich-comparison-item p {
  margin: 0;
  font-size: 12px;
  opacity: 0.82;
}

.rich-timeline-frame {
  display: block;
  width: 100%;
  max-height: 108px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 7px;
  border: 1px solid rgba(79, 70, 229, 0.18);
  background: rgba(255,255,255,0.65);
}

.option-timeline-card .rich-timeline-frame {
  max-height: 82px;
}

.rich-timeline-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 7px;
}

.rich-timeline-tags span {
  border-radius: 999px;
  padding: 2px 7px;
  font-size: 10px;
  color: #4c1d95;
  background: rgba(139, 92, 246, 0.12);
}

.rich-comparison {
  display: grid;
  gap: 8px;
}

.rich-comparison-item {
  padding: 10px;
  border-radius: 10px;
  background: rgba(255,255,255,0.52);
}

.rich-comparison-item dl {
  margin: 8px 0 0;
  font-size: 12px;
}

.rich-comparison-item dt {
  font-weight: 600;
}

.rich-comparison-item dd {
  margin: 0 0 5px;
  opacity: 0.82;
}

.rich-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
}

.rich-metric {
  padding: 10px;
  border-radius: 12px;
  background: rgba(255,255,255,0.55);
}

.rich-metric-value {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.1;
}

.rich-metric-label {
  margin-top: 4px;
  font-size: 12px;
  opacity: 0.78;
}

.rich-metric-delta {
  margin-top: 5px;
  font-size: 11px;
  opacity: 0.68;
}

.rich-quotes {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rich-quote {
  margin: 0;
  padding: 10px 12px;
  border-left: 3px solid rgba(0,0,0,0.18);
  border-radius: 10px;
  background: rgba(255,255,255,0.52);
}

.rich-quote p {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
}

.rich-quote cite {
  display: block;
  margin-top: 7px;
  font-size: 11px;
  opacity: 0.68;
  font-style: normal;
}

html[data-theme="dark"] .rich-table,
html[data-theme="dark"] .rich-table th,
html[data-theme="dark"] .rich-timeline-item,
html[data-theme="dark"] .rich-comparison-item,
html[data-theme="dark"] .rich-metric,
html[data-theme="dark"] .rich-quote {
  background: rgba(0,0,0,0.24);
}

html[data-theme="dark"] .rich-table th,
html[data-theme="dark"] .rich-table td {
  border-color: rgba(255,255,255,0.12);
}

.option-table-card,
.option-timeline-card,
.option-metric-card,
.option-quote-card {
  max-height: 170px;
  overflow: hidden;
}

.option-comparison-card {
  max-height: none;
  overflow: visible;
}

.option-comparison-card .rich-comparison-item {
  padding: 8px 9px;
}

.option-comparison-card .rich-comparison-item p {
  line-height: 1.35;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rich-inline-code {
  background: rgba(0,0,0,0.08);
  padding: 1px 4px;
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

html[data-theme="dark"] .rich-inline-code {
  background: rgba(255,255,255,0.12);
}

/* Syntax highlight */
.hl-keyword { color: #cba6f7; }
.hl-string   { color: #a6e3a1; }
.hl-comment  { color: #6c7086; font-style: italic; }
.hl-type     { color: #f9e2af; }
.hl-number   { color: #fab387; }

/* Markdown inside rich nodes */
.rich-md-h2 { font-size: 18px; font-weight: 500; margin: 12px 0 6px; }
.rich-md-h3 { font-size: 15px; font-weight: 500; margin: 10px 0 5px; }
.rich-md-h4 { font-size: 13px; font-weight: 500; margin: 8px 0 4px; }
.rich-md-p  { margin: 0 0 8px; line-height: 1.55; }
.rich-md-ul,
.rich-md-ol { margin: 0 0 8px; padding-left: 18px; }
.rich-md-li { margin: 0 0 3px; }
.rich-md-link { color: var(--ps-blue); text-decoration: underline; text-underline-offset: 2px; }

/* Badge colors for new node types */
.badge-note    { background: linear-gradient(135deg, #eab308, #ca8a04); color: white; }
.badge-plan    { background: linear-gradient(135deg, #0ea5e9, #0284c7); color: white; }
.badge-todo    { background: linear-gradient(135deg, #a855f7, #7c3aed); color: white; }
.badge-weather { background: linear-gradient(135deg, #06b6d4, #0891b2); color: white; }
.badge-map     { background: linear-gradient(135deg, #22c55e, #16a34a); color: white; }
.badge-link    { background: linear-gradient(135deg, #f97316, #ea580c); color: white; }
.badge-code    { background: linear-gradient(135deg, #64748b, #475569); color: white; }
.badge-table   { background: linear-gradient(135deg, #14b8a6, #0f766e); color: white; }
.badge-timeline { background: linear-gradient(135deg, #8b5cf6, #6d28d9); color: white; }
.badge-comparison { background: linear-gradient(135deg, #f59e0b, #d97706); color: white; }
.badge-metric  { background: linear-gradient(135deg, #10b981, #047857); color: white; }
.badge-quote   { background: linear-gradient(135deg, #ec4899, #be185d); color: white; }

/* Markdown rendering in chat messages */
.chat-text.markdown-body h1,
.chat-text.markdown-body h2,
.chat-text.markdown-body h3,
.chat-text.markdown-body h4,
.chat-text.markdown-body h5,
.chat-text.markdown-body h6 {
  margin: 18px 0 8px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.chat-text.markdown-body h1 { font-size: 20px; }
.chat-text.markdown-body h2 {
  font-size: 17px;
  padding-bottom: 4px;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}
.chat-text.markdown-body h3 { font-size: 15px; }
.chat-text.markdown-body h4,
.chat-text.markdown-body h5,
.chat-text.markdown-body h6 { font-size: 14px; }
.chat-text.markdown-body > :first-child {
  margin-top: 0;
}
.chat-text.markdown-body > :last-child {
  margin-bottom: 0;
}
.chat-text.markdown-body p {
  margin: 0 0 12px;
}
.chat-text.markdown-body ul,
.chat-text.markdown-body ol {
  padding-left: 22px;
  margin: 0 0 12px;
}
.chat-text.markdown-body li {
  margin-bottom: 6px;
  padding-left: 2px;
}
.chat-text.markdown-body li > p {
  margin: 4px 0;
}
.chat-text.markdown-body hr {
  border: 0;
  border-top: 1px solid var(--divider);
  margin: 14px 0;
}
.chat-text.markdown-body code {
  font-family: 'Space Mono', monospace;
  font-size: 13px;
  background: #f0f0f0;
  padding: 2px 4px;
  border-radius: 3px;
}
.chat-text.markdown-body pre {
  background: #f5f5f5;
  padding: 12px;
  border-radius: 6px;
  overflow-x: auto;
  position: relative;
  margin: 8px 0;
}
.chat-text.markdown-body pre code {
  background: transparent;
  padding: 0;
}
.chat-text.markdown-body blockquote {
  border-left: 3px solid var(--ps-blue);
  padding: 8px 12px;
  margin: 10px 0 12px;
  color: var(--inkMuted);
  background: rgba(0, 112, 204, 0.06);
  border-radius: 0 10px 10px 0;
}
.chat-text.markdown-body table {
  border-collapse: collapse;
  margin: 10px 0 12px;
  font-size: 13px;
  width: max-content;
}
.chat-text.markdown-body th,
.chat-text.markdown-body td {
  border: 1px solid #ddd;
  padding: 6px 10px;
  text-align: left;
  max-width: 240px;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}
.chat-text.markdown-body th {
  background: #f0f0f0;
  font-weight: 600;
}
.chat-text.markdown-body a {
  color: #2563eb;
  text-decoration: none;
}
.chat-text.markdown-body a:hover {
  text-decoration: underline;
}
.chat-text.markdown-body del {
  color: #888;
}
.chat-text.markdown-body table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: thin;
  border-radius: 8px;
}
.chat-text.markdown-body li.task-list-item {
  list-style: none;
  margin-left: -16px;
}
.chat-text.markdown-body li.task-list-item input[type="checkbox"] {
  margin-right: 6px;
  vertical-align: -1px;
}
.chat-code-copy {
  position: absolute;
  top: 4px;
  right: 4px;
  background: rgba(0,0,0,0.05);
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: 4px;
  padding: 2px 8px;
  font-size: 11px;
  font-family: 'Space Mono', monospace;
  cursor: pointer;
}
.chat-code-copy:hover {
  background: rgba(0,0,0,0.1);
}

/* Streaming cursor */
.streaming-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: currentColor;
  animation: blink 1s step-end infinite;
  vertical-align: text-bottom;
  margin-left: 1px;
}
@keyframes blink {
  50% { opacity: 0; }
}

/* Chat action feedback cards (Phase 21 Plan 05) */
.chat-action-feedback {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-2, #f5f5f5);
  border: 1px solid var(--border, rgba(0,0,0,0.08));
  border-radius: 6px;
  padding: 8px 12px;
  margin-top: 8px;
  cursor: pointer;
  font-size: 12px;
  transition: background 150ms ease, transform 150ms ease;
}
.chat-action-feedback:hover {
  background: var(--surface-3, #eaeaea);
  transform: translateY(-1px);
}
.chat-action-feedback.failed {
  cursor: default;
  background: rgba(213, 59, 0, 0.08);
  border-color: rgba(213, 59, 0, 0.24);
}
.chat-action-feedback.failed:hover {
  transform: none;
}
.chat-action-feedback.failed .chat-action-icon {
  background: var(--danger);
}
.chat-action-feedback:focus {
  outline: 2px solid var(--accent, #1F1F1B);
  outline-offset: 2px;
}
.chat-action-feedback .chat-action-icon {
  font-size: 16px;
  line-height: 1;
  flex-shrink: 0;
}
.chat-action-feedback .chat-action-label {
  font-weight: 500;
  color: var(--text-secondary, #4a4a4a);
  white-space: nowrap;
}
.chat-action-feedback .chat-action-title {
  color: var(--text-primary, #1F1F1B);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 220px;
}

.workbench-tour {
  position: fixed;
  inset: 0;
  z-index: 320;
  pointer-events: auto;
}

.workbench-tour-spotlight {
  position: fixed;
  z-index: 321;
  border: 2px solid var(--ps-blue);
  border-radius: 26px;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.58), 0 18px 42px rgba(0, 112, 204, 0.24);
  pointer-events: none;
  transition: left 220ms ease, top 220ms ease, width 220ms ease, height 220ms ease;
}

.workbench-tour-card {
  position: fixed;
  z-index: 322;
  width: min(370px, calc(100vw - 32px));
  padding: 16px;
  border: 1px solid var(--divider);
  border-radius: 18px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-16);
  backdrop-filter: blur(18px);
  transition: left 220ms ease, top 220ms ease;
}

.workbench-tour-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.workbench-tour-progress {
  color: var(--inkMuted);
  font-size: 12px;
  font-weight: 700;
}

.workbench-tour-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.workbench-tour-skip,
.workbench-tour-next {
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
}

.workbench-tour-skip {
  color: var(--inkMuted);
  background: var(--ice);
}

.workbench-tour-next {
  color: var(--paper);
  background: var(--ps-blue);
}

.workbench-tour-skip:hover {
  color: var(--ink);
}

.workbench-tour-next:hover {
  background: var(--ps-blue-hover);
}

.workbench-tour-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
}

.workbench-tour-card p {
  margin: 0;
  color: var(--inkMuted);
  font-size: 14px;
  line-height: 1.65;
}

html[data-theme="dark"] .workbench-tour-card {
  background: rgba(20, 20, 20, 0.98);
}

@media (max-width: 720px) {
  .workbench-tour-card {
    left: 16px !important;
    right: 16px;
    bottom: 16px;
    top: auto !important;
  }
}