:root {
  color-scheme: light;
  --bg: #f3ede4;
  --bg-strong: #ece2d4;
  --panel: rgba(255, 251, 246, 0.84);
  --panel-strong: rgba(255, 250, 243, 0.96);
  --line: rgba(88, 72, 53, 0.14);
  --line-strong: rgba(88, 72, 53, 0.24);
  --ink: #1c2431;
  --muted: #667085;
  --accent: #d16a42;
  --accent-strong: #b8522c;
  --accent-soft: rgba(209, 106, 66, 0.12);
  --secondary: #1d6e6e;
  --secondary-soft: rgba(29, 110, 110, 0.12);
  --danger: #a61b43;
  --danger-soft: rgba(166, 27, 67, 0.1);
  --shadow: 0 24px 60px rgba(28, 36, 49, 0.1);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --radius-sm: 14px;
  font-family: "Avenir Next", "PingFang SC", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(209, 106, 66, 0.16), transparent 24%),
    radial-gradient(circle at right 14%, rgba(29, 110, 110, 0.13), transparent 20%),
    linear-gradient(180deg, #faf6f0 0%, var(--bg) 52%, var(--bg-strong) 100%);
}

body.drawing-app-mode {
  overscroll-behavior-y: contain;
}

[hidden] {
  display: none !important;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  color: inherit;
}

.page-shell {
  width: min(1360px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 22px 0 56px;
  display: grid;
  gap: 18px;
}

.auth-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px;
}

.auth-card {
  width: min(460px, 100%);
  display: grid;
  gap: 18px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(145deg, rgba(255, 252, 247, 0.97), rgba(245, 235, 223, 0.9)),
    var(--panel-strong);
  box-shadow: var(--shadow);
}

.auth-card h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.auth-copy {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.topbar {
  padding: 24px 26px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  background:
    linear-gradient(135deg, rgba(255, 251, 246, 0.96), rgba(247, 241, 232, 0.88)),
    var(--panel);
}

.brand-block {
  display: grid;
  gap: 10px;
  max-width: 780px;
}

.eyebrow,
.panel-kicker {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary);
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.brand-row h1,
.panel-head h2,
.section-head h2,
.config-card-head h3,
.markup-section-head h3,
.advanced-card h3,
.candidate-card h3 {
  margin: 0;
}

.brand-row h1 {
  font-size: clamp(2.4rem, 4vw, 4.8rem);
  line-height: 0.94;
  letter-spacing: -0.04em;
}

.status-badge,
.gesture-pill,
.annotation-chip,
.markup-pill,
.estimate-chip,
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
}

.status-badge {
  color: var(--secondary);
  background: var(--secondary-soft);
}

.gesture-pill {
  align-self: center;
  color: var(--accent-strong);
  background: rgba(255, 248, 242, 0.92);
  border: 1px solid rgba(209, 106, 66, 0.16);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.72);
}

.hero-copy,
.panel-head p,
.section-head p,
.submit-hint,
.config-card-head p,
.markup-section-head p,
.advanced-card p,
.empty-state span,
.meta-card small,
.candidate-card p,
.connection-meta,
.input-debug-item small,
.markup-inline-note,
.preset-pill,
.markup-list,
.helper-asset-card figcaption {
  margin: 0;
  line-height: 1.6;
  color: var(--muted);
}

.topbar-actions,
.panel-head-actions,
.tool-group,
.tool-group-inline,
.tool-group-actions,
.canvas-meta,
.status-stack,
.canvas-submit-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.topbar-actions {
  align-items: center;
  justify-content: flex-end;
}

.finger-draw-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.82);
  color: var(--secondary);
  font-weight: 700;
  cursor: pointer;
}

.finger-draw-toggle input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.finger-draw-slider {
  position: relative;
  width: 44px;
  height: 26px;
  border-radius: 999px;
  background: rgba(28, 36, 49, 0.14);
  transition: background 140ms ease;
  flex: 0 0 auto;
}

.finger-draw-slider::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 4px 10px rgba(28, 36, 49, 0.16);
  transition: transform 140ms ease;
}

.finger-draw-toggle input:checked + .finger-draw-slider {
  background: rgba(29, 110, 110, 0.72);
}

.finger-draw-toggle input:checked + .finger-draw-slider::after {
  transform: translateX(18px);
}

.workspace-grid {
  display: grid;
  gap: 18px;
}

.canvas-panel,
.candidates-panel {
  padding: 18px;
  display: grid;
  gap: 16px;
}

.canvas-panel {
  background:
    linear-gradient(180deg, rgba(255, 253, 249, 0.92), rgba(248, 242, 234, 0.82)),
    var(--panel);
}

.panel-head,
.section-head,
.config-card-head,
.markup-section-head {
  display: grid;
  gap: 6px;
}

.section-head.compact {
  gap: 4px;
}

.canvas-panel-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 16px;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.62);
}

.tool-group {
  align-items: center;
}

.tool-group-inline {
  justify-content: center;
}

.upload-chip,
.tool-button,
.ghost-button,
.primary-button {
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform 140ms ease,
    border-color 140ms ease,
    background 140ms ease,
    box-shadow 140ms ease;
}

.upload-chip:hover,
.tool-button:hover,
.ghost-button:hover,
.primary-button:hover {
  transform: translateY(-1px);
}

.upload-chip,
.tool-button,
.ghost-button {
  background: rgba(255, 255, 255, 0.82);
  border-color: var(--line);
}

.upload-chip,
.tool-button,
.ghost-button,
.primary-button {
  padding: 11px 15px;
  font-weight: 700;
}

.upload-chip-primary {
  background: linear-gradient(135deg, rgba(209, 106, 66, 0.12), rgba(209, 106, 66, 0.2));
  border-color: rgba(209, 106, 66, 0.2);
  color: var(--accent-strong);
}

.tool-button.active {
  background: linear-gradient(135deg, rgba(209, 106, 66, 0.14), rgba(209, 106, 66, 0.22));
  border-color: rgba(209, 106, 66, 0.28);
  color: var(--accent-strong);
}

.settings-trigger {
  color: var(--secondary);
  background: rgba(29, 110, 110, 0.1);
}

.ghost-button.danger {
  color: var(--danger);
  background: var(--danger-soft);
}

.primary-button {
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 16px 32px rgba(209, 106, 66, 0.2);
}

.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.65;
  transform: none;
}

.compact-button {
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 0.84rem;
}

.debug-task-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 12px;
  padding: 14px 16px;
  border: 1px solid rgba(29, 110, 110, 0.16);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(29, 110, 110, 0.08), rgba(209, 106, 66, 0.08));
}

.debug-task-card strong {
  display: block;
  margin-top: 4px;
  font-family: "JetBrains Mono", "Cascadia Code", monospace;
  letter-spacing: 0.04em;
}

.mini-field,
.field {
  display: grid;
  gap: 8px;
}

.mini-field span,
.field span,
.meta-label,
.status-pill span {
  font-size: 0.84rem;
  color: var(--muted);
}

.range-field {
  min-width: 132px;
}

.mini-field-color {
  min-width: 164px;
}

.field input,
.field textarea,
.field select,
.mini-field input {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--line);
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
}

.field textarea {
  min-height: 132px;
  resize: vertical;
}

.instruction-field textarea {
  min-height: 92px;
}

.color-picker-shell {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 14px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  overflow: hidden;
}

.color-swatch {
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  border-radius: 999px;
  border: 2px solid rgba(28, 36, 49, 0.12);
  background: #e76f51;
}

.color-hex {
  font-size: 0.92rem;
  letter-spacing: 0.05em;
}

.color-input-native {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  padding: 0;
  border: 0;
}

.canvas-shell {
  position: relative;
  min-height: min(72vh, 820px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  overflow: hidden;
  border-radius: 26px;
  border: 1px solid rgba(29, 110, 110, 0.16);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.02)),
    radial-gradient(circle at top left, rgba(29, 110, 110, 0.08), transparent 32%),
    radial-gradient(circle at bottom right, rgba(209, 106, 66, 0.1), transparent 28%),
    #f8f3ed;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
  touch-action: none;
}

.canvas-shell.is-drawing-locked {
  touch-action: none;
}

#editorCanvas {
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 100%;
  display: block;
  touch-action: none;
  pointer-events: auto;
  cursor: crosshair;
}

.canvas-shell.is-drawing-locked #editorCanvas {
  touch-action: none;
}

.empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  pointer-events: none;
}

.empty-state[hidden] {
  display: none !important;
}

.empty-state-card {
  max-width: 420px;
  padding: 22px 24px;
  border-radius: 24px;
  border: 2px dashed rgba(29, 110, 110, 0.34);
  background: rgba(255, 252, 247, 0.82);
  box-shadow: 0 18px 40px rgba(28, 36, 49, 0.08);
  display: grid;
  gap: 8px;
  text-align: center;
}

.empty-state strong {
  color: var(--ink);
  font-size: 1.12rem;
}

.canvas-meta {
  display: grid;
  grid-template-columns: minmax(220px, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.meta-card,
.status-pill,
.annotation-item,
.event-item,
.candidate-card,
.candidate-empty,
.config-card,
.advanced-card,
.markup-section,
.connection-item,
.input-debug-panel,
.advanced-panel,
.estimate-card,
.compact-details {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
}

.meta-card,
.status-pill,
.config-card,
.advanced-card,
.markup-section,
.connection-item,
.estimate-card,
.input-debug-panel,
.advanced-panel,
.candidate-card,
.candidate-empty,
.event-item,
.annotation-item {
  padding: 14px;
}

.meta-card,
.status-pill {
  display: grid;
  gap: 6px;
}

.hero-meta-card {
  background: linear-gradient(135deg, rgba(29, 110, 110, 0.08), rgba(209, 106, 66, 0.1));
}

.subtle-card {
  background: rgba(255, 255, 255, 0.55);
}

.canvas-action-stack {
  display: grid;
  gap: 14px;
}

.compact-stack {
  padding: 18px;
  border-radius: 26px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(248, 242, 234, 0.88));
}

.compact-details {
  overflow: hidden;
}

.compact-details summary,
.advanced-panel summary,
.input-debug-panel summary {
  cursor: pointer;
  list-style: none;
  font-weight: 800;
  color: var(--ink);
}

.compact-details summary::-webkit-details-marker,
.advanced-panel summary::-webkit-details-marker,
.input-debug-panel summary::-webkit-details-marker {
  display: none;
}

.compact-details summary,
.advanced-panel summary {
  padding: 14px 16px;
}

.compact-details[open],
.advanced-panel[open],
.input-debug-panel[open] {
  display: grid;
  gap: 12px;
}

.compact-details > :not(summary),
.advanced-panel > :not(summary),
.input-debug-panel > :not(summary) {
  margin: 0 16px 16px;
}

.advanced-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.advanced-card.disabled {
  opacity: 0.66;
}

.nested-panel {
  background: rgba(250, 247, 242, 0.88);
}

.canvas-action-grid,
.config-grid,
.button-row,
.estimate-grid,
.runtime-details-grid {
  display: grid;
  gap: 12px;
}

.canvas-action-grid,
.estimate-grid,
.runtime-details-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.config-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.button-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.primary-estimate-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.estimate-card-compact {
  gap: 14px;
}

.estimate-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
}

.estimate-chip {
  color: var(--secondary);
  background: var(--secondary-soft);
}

.estimate-chip.block {
  color: var(--danger);
  background: var(--danger-soft);
}

.estimate-list,
.advanced-override-list,
.connection-list,
.markup-result-panel,
.markup-grid,
.event-list,
.annotation-list,
.candidate-list,
.input-debug-list,
.preset-summary,
.helper-asset-grid {
  display: grid;
  gap: 10px;
}

.estimate-item {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--muted);
}

.estimate-item strong {
  display: block;
  margin-bottom: 4px;
  color: var(--ink);
}

.emphasis-hint {
  color: var(--ink);
}

.canvas-submit-row {
  align-items: center;
}

.canvas-submit-row .ghost-button,
.canvas-submit-row .primary-button {
  min-width: 220px;
}

.first-run-tutorial {
  position: fixed;
  left: var(--tutorial-left, 24px);
  top: var(--tutorial-top, 96px);
  width: min(360px, calc(100vw - 32px));
  z-index: 80;
  pointer-events: none;
}

.tutorial-card {
  display: grid;
  gap: 12px;
  padding: 16px;
  border: 1px solid rgba(29, 110, 110, 0.22);
  border-radius: 18px;
  background:
    linear-gradient(145deg, rgba(255, 253, 248, 0.98), rgba(246, 241, 233, 0.96)),
    var(--panel-strong);
  box-shadow: 0 18px 44px rgba(28, 36, 49, 0.18);
  pointer-events: auto;
}

.tutorial-topline,
.tutorial-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tutorial-topline {
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.tutorial-card h2 {
  margin: 0;
  font-size: 1.08rem;
}

.tutorial-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.tutorial-actions {
  justify-content: flex-end;
  flex-wrap: wrap;
}

.tutorial-actions .compact-button {
  min-width: 0;
  padding: 9px 12px;
}

.tutorial-link-button {
  border: 0;
  padding: 4px 0;
  color: var(--secondary);
  background: transparent;
  font-weight: 800;
  cursor: pointer;
}

.tutorial-highlight {
  outline: 3px solid rgba(29, 110, 110, 0.34);
  outline-offset: 4px;
  box-shadow: 0 0 0 8px rgba(29, 110, 110, 0.08);
  scroll-margin: 120px;
}

.secondary-status-stack {
  margin-bottom: 4px;
}

.status-pill {
  min-width: 150px;
}

.candidates-panel {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.84), rgba(247, 241, 232, 0.9)),
    var(--panel);
}

.candidate-list {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.candidate-card,
.candidate-empty {
  padding: 16px;
}

.candidate-card {
  display: grid;
  gap: 10px;
  background: rgba(255, 255, 255, 0.76);
}

.candidate-card.selected {
  border-color: rgba(209, 106, 66, 0.3);
  box-shadow:
    0 18px 34px rgba(209, 106, 66, 0.08),
    inset 0 0 0 1px rgba(209, 106, 66, 0.18);
}

.candidate-empty {
  min-height: 220px;
  place-items: center;
  text-align: center;
  color: var(--muted);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(250, 245, 237, 0.88));
}

.candidate-image,
.helper-asset-image {
  width: 100%;
  display: block;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
}

.candidate-image {
  aspect-ratio: 1 / 1;
  object-fit: cover;
  cursor: zoom-in;
  transition:
    transform 140ms ease,
    box-shadow 140ms ease;
}

.candidate-image:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(28, 36, 49, 0.12);
}

.image-preview-dialog {
  width: min(96vw, 1400px);
  max-width: 1400px;
  max-height: 94dvh;
  padding: 0;
  border: none;
  background: transparent;
}

.image-preview-dialog::backdrop {
  background: rgba(12, 18, 24, 0.82);
  backdrop-filter: blur(8px);
}

.image-preview-shell {
  display: grid;
  gap: 14px;
  padding: 16px;
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(20, 28, 36, 0.96), rgba(16, 22, 29, 0.98));
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.42);
}

.image-preview-close {
  justify-self: end;
  min-width: 88px;
  color: rgba(247, 249, 252, 0.92);
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
}

.image-preview-image {
  width: 100%;
  max-height: calc(94dvh - 132px);
  display: block;
  object-fit: contain;
  border-radius: 20px;
  background: rgba(8, 12, 16, 0.8);
}

.image-preview-actions {
  display: flex;
  justify-content: flex-end;
}

.image-preview-actions .primary-button {
  text-decoration: none;
}

.badge {
  color: var(--accent-strong);
  background: rgba(209, 106, 66, 0.12);
}

.badge.muted,
.markup-pill.none {
  color: var(--muted);
  background: rgba(102, 112, 133, 0.12);
}

.annotation-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.annotation-chip {
  color: var(--accent-strong);
  background: var(--accent-soft);
}

.event-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 280px;
  overflow: auto;
}

.event-item {
  display: grid;
  gap: 4px;
}

.connection-item strong,
.input-debug-item strong {
  display: block;
}

.preset-pill {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
  background: rgba(29, 110, 110, 0.08);
}

.markup-empty {
  padding: 14px;
  border-radius: 16px;
  border: 1px dashed var(--line);
  background: rgba(255, 255, 255, 0.62);
  color: var(--muted);
}

.markup-section pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font: 0.88rem/1.55 "Consolas", "SFMono-Regular", monospace;
}

.markup-subsection {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.markup-subsection h4 {
  margin: 0;
  font-size: 0.95rem;
}

.markup-list {
  padding-left: 18px;
}

.helper-asset-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.helper-asset-card {
  margin: 0;
  display: grid;
  gap: 8px;
}

.settings-dialog {
  width: min(980px, calc(100vw - 24px));
  max-height: min(90dvh, 980px);
  padding: 0;
  border: 1px solid var(--line-strong);
  border-radius: 28px;
  background: rgba(251, 247, 240, 0.98);
  box-shadow: 0 32px 72px rgba(28, 36, 49, 0.24);
}

.settings-dialog::backdrop {
  background: rgba(28, 36, 49, 0.36);
  backdrop-filter: blur(5px);
}

.settings-dialog-shell {
  display: grid;
}

.settings-dialog-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 16px;
  padding: 20px 20px 14px;
  border-bottom: 1px solid var(--line);
}

.settings-dialog-body {
  display: grid;
  gap: 14px;
  padding: 18px;
  overflow: auto;
  max-height: calc(min(90dvh, 980px) - 96px);
}

.sidebar-section {
  display: grid;
  gap: 12px;
}

.input-debug-panel {
  display: grid;
  gap: 10px;
}

.input-debug-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-height: 240px;
  overflow: auto;
}

.input-debug-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.82);
  display: grid;
  gap: 4px;
}

.compact-field {
  min-width: 0;
}

.compact-advanced {
  margin-top: 4px;
}

.runtime-details-grid .meta-card {
  min-width: 0;
}

.is-hidden-accessory {
  display: none;
}

.is-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (pointer: coarse) and (min-width: 768px) {
  .candidate-list {
    grid-template-columns: 1fr;
  }

  .candidate-card {
    max-width: min(92vw, 960px);
    margin: 0 auto;
  }

  .candidate-image {
    aspect-ratio: auto;
    object-fit: contain;
    max-height: 68vh;
  }

  .image-preview-dialog {
    width: min(98vw, 1400px);
  }
}

@media (max-width: 1100px) {
  .toolbar,
  .canvas-meta,
  .config-grid {
    grid-template-columns: 1fr;
  }

  .tool-group-inline,
  .tool-group-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 820px) {
  .page-shell {
    width: min(100vw - 20px, 100%);
    padding-top: 14px;
  }

  .topbar,
  .canvas-panel,
  .candidates-panel {
    padding: 16px;
    border-radius: 24px;
  }

  .topbar,
  .canvas-panel-head,
  .settings-dialog-head {
    grid-template-columns: 1fr;
    display: grid;
  }

  .topbar-actions {
    justify-content: stretch;
  }

  .topbar-actions .finger-draw-toggle,
  .topbar-actions .upload-chip,
  .topbar-actions .ghost-button,
  .canvas-submit-row .ghost-button,
  .canvas-submit-row .primary-button {
    width: 100%;
    min-width: 0;
    text-align: center;
  }

  .first-run-tutorial {
    inset: auto 10px 12px 10px;
    width: auto;
  }

  .tutorial-card {
    border-radius: 18px;
  }

  .tutorial-actions {
    justify-content: stretch;
  }

  .tutorial-actions .ghost-button,
  .tutorial-actions .primary-button {
    flex: 1 1 120px;
  }

  .button-row,
  .canvas-action-grid,
  .estimate-grid,
  .runtime-details-grid,
  .primary-estimate-grid {
    grid-template-columns: 1fr;
  }

  .canvas-shell {
    min-height: 58vh;
  }

  .image-preview-shell {
    padding: 12px;
    border-radius: 20px;
  }

  .image-preview-image {
    max-height: calc(92dvh - 124px);
    border-radius: 16px;
  }

  .image-preview-actions,
  .image-preview-close {
    width: 100%;
  }

  .image-preview-actions .primary-button {
    width: 100%;
    text-align: center;
  }
}

body.drawing-app-mode .page-shell {
  width: min(100vw - 14px, 100%);
  padding: 10px 0 24px;
  gap: 12px;
}

body.drawing-app-mode .topbar,
body.drawing-app-mode .canvas-panel,
body.drawing-app-mode .candidates-panel {
  border-radius: 22px;
}

body.drawing-app-mode .topbar {
  padding: 16px;
  align-items: start;
}

body.drawing-app-mode .toolbar {
  position: sticky;
  top: 74px;
  z-index: 4;
  background: rgba(255, 252, 247, 0.96);
  backdrop-filter: blur(14px);
}

body.drawing-app-mode .canvas-panel-head {
  position: sticky;
  top: 8px;
  z-index: 5;
  padding: 12px;
  border-radius: 18px;
  background: rgba(255, 252, 247, 0.96);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

body.drawing-app-mode .canvas-shell {
  min-height: clamp(420px, calc(100dvh - 240px), 980px);
}

body.drawing-app-mode .compact-stack {
  padding: 14px;
  border-radius: 20px;
}

body.drawing-app-mode .settings-dialog {
  width: min(100vw - 12px, 100%);
  max-height: min(92dvh, 100%);
}

body.drawing-app-mode .settings-dialog-head {
  padding: 16px 16px 12px;
}

body.drawing-app-mode .settings-dialog-body {
  padding: 14px;
}

.test-access-shell {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: clamp(18px, 4vw, 56px);
  background:
    radial-gradient(circle at 18% 20%, rgba(230, 111, 81, 0.18), transparent 32%),
    radial-gradient(circle at 84% 12%, rgba(42, 157, 143, 0.18), transparent 30%),
    linear-gradient(135deg, #fff8ea 0%, #ecf4e6 50%, #d7ebe5 100%);
}

.test-access-card {
  width: min(1080px, 100%);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.72fr);
  gap: clamp(18px, 3vw, 30px);
  padding: clamp(18px, 3vw, 34px);
  border: 1px solid rgba(45, 60, 50, 0.14);
  border-radius: 34px;
  background: rgba(255, 252, 245, 0.82);
  box-shadow: 0 30px 80px rgba(32, 52, 43, 0.18);
  backdrop-filter: blur(18px);
}

.test-access-main,
.test-access-tips {
  display: grid;
  gap: 18px;
  align-content: start;
}

.test-access-main h1 {
  max-width: 620px;
  margin: 0;
  color: #18342d;
  font-size: clamp(34px, 6vw, 72px);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

.test-access-copy {
  max-width: 620px;
  margin: 0;
  color: rgba(24, 52, 45, 0.72);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.7;
}

.test-access-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
  padding: 16px;
  border: 1px dashed rgba(24, 52, 45, 0.24);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.64);
}

.secondary-test-access-form {
  border-style: solid;
  background: rgba(255, 246, 226, 0.74);
}

.test-access-tips {
  padding: clamp(18px, 3vw, 28px);
  border-radius: 26px;
  color: #24443c;
  background: linear-gradient(160deg, rgba(36, 68, 60, 0.09), rgba(255, 255, 255, 0.54));
}

.test-access-tips h2 {
  margin: 0;
  font-size: 22px;
}

.test-access-tips ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 20px;
  line-height: 1.65;
}

@media (max-width: 760px) {
  .test-access-card,
  .test-access-form {
    grid-template-columns: 1fr;
  }

  .test-access-form .primary-button,
  .test-access-form .ghost-button {
    width: 100%;
  }
}

/* Gallery Studio production skin */
:root {
  --bg: #f4f5f2;
  --bg-strong: #eef1f1;
  --panel: rgba(255, 254, 253, 0.9);
  --panel-strong: rgba(255, 254, 253, 0.98);
  --line: #d9dfdc;
  --line-strong: #b9c2be;
  --line-soft: #e9eeeb;
  --ink: #171b20;
  --muted: #6e777f;
  --accent: #d84f35;
  --accent-strong: #b93e28;
  --accent-soft: rgba(216, 79, 53, 0.12);
  --secondary: #159a96;
  --secondary-soft: rgba(21, 154, 150, 0.12);
  --danger: #a61b43;
  --danger-soft: rgba(166, 27, 67, 0.1);
  --shadow: 0 18px 42px rgba(26, 31, 36, 0.08);
  --shadow-crisp: 0 10px 24px rgba(26, 31, 36, 0.1);
  --radius-xl: 8px;
  --radius-lg: 8px;
  --radius-md: 8px;
  --radius-sm: 6px;
  font-family: Inter, "Avenir Next", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}

body {
  min-width: 320px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(244, 245, 242, 0.94)),
    linear-gradient(90deg, rgba(80, 106, 132, 0.08), transparent 42%),
    var(--bg);
}

.page-shell {
  width: min(100vw - 24px, 1720px);
  min-height: calc(100dvh - 24px);
  margin: 12px auto;
  padding: 0;
  gap: 10px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.topbar {
  min-height: 72px;
  padding: 12px;
  align-items: center;
  border-radius: var(--radius-xl);
  background: rgba(255, 254, 253, 0.9);
}

.brand-block {
  gap: 0;
}

.brand-row {
  gap: 11px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-xl);
  color: var(--panel-strong);
  background:
    linear-gradient(135deg, rgba(216, 79, 53, 0.94), rgba(21, 154, 150, 0.9)),
    var(--ink);
  font-weight: 800;
  letter-spacing: 0;
}

.brand-row h1 {
  font-size: 1.58rem;
  line-height: 1;
  letter-spacing: 0;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 3px;
  color: #747f71;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0;
}

.topbar-actions {
  gap: 8px;
  align-items: center;
}

.finger-draw-toggle,
.upload-chip,
.tool-button,
.ghost-button,
.primary-button,
.compact-button {
  border-radius: var(--radius-sm);
  letter-spacing: 0;
}

.upload-chip,
.tool-button,
.ghost-button,
.primary-button {
  min-height: 42px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
}

.ghost-button,
.tool-button,
.upload-chip,
.finger-draw-toggle {
  color: #303841;
  background: var(--panel-strong);
  border-color: var(--line);
}

.upload-chip-primary,
.primary-button {
  color: var(--panel-strong);
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 12px 24px rgba(216, 79, 53, 0.2);
}

.upload-chip:hover,
.tool-button:hover,
.ghost-button:hover,
.primary-button:hover,
.candidate-card:hover,
.color-preset-button:hover {
  transform: translateY(-1px);
}

.tool-button.active,
.ghost-button.active {
  color: var(--accent-strong);
  background: #fbebe6;
  border-color: rgba(216, 79, 53, 0.28);
}

.ghost-button.danger,
.tool-group-actions .danger {
  color: var(--danger);
  background: rgba(166, 27, 67, 0.06);
  border-color: rgba(166, 27, 67, 0.2);
}

.workspace-grid {
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 10px;
  align-items: start;
}

.canvas-panel,
.candidates-panel {
  min-width: 0;
  padding: 10px;
  gap: 10px;
  border-radius: var(--radius-xl);
}

.canvas-panel {
  background:
    linear-gradient(180deg, rgba(255, 254, 253, 0.68), rgba(237, 241, 240, 0.68)),
    #f9faf8;
}

.canvas-panel-head {
  min-height: 52px;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: rgba(255, 254, 253, 0.9);
}

.panel-head h2,
.section-head h2 {
  font-size: 1rem;
  line-height: 1.2;
  letter-spacing: 0;
}

.gesture-pill,
.status-badge,
.estimate-chip,
.badge {
  border-radius: var(--radius-sm);
  color: var(--secondary);
  background: var(--secondary-soft);
  border: 1px solid rgba(21, 154, 150, 0.2);
}

.toolbar {
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius-xl);
  background: rgba(255, 254, 253, 0.9);
  box-shadow: none;
}

.tool-group {
  gap: 8px;
}

.tool-group-inline {
  gap: 10px;
}

.mini-field {
  border-radius: var(--radius-sm);
  border-color: var(--line);
  background: var(--panel-strong);
}

.color-picker-shell {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.color-swatch {
  box-shadow: 0 0 0 2px var(--panel-strong), 0 0 0 3px var(--line-strong);
}

.color-hex {
  min-width: 72px;
  color: var(--ink);
  font-size: 0.78rem;
  letter-spacing: 0;
}

.color-preset-row {
  display: grid;
  grid-template-columns: repeat(9, 18px);
  gap: 5px;
  align-items: center;
}

.color-preset-button {
  width: 18px;
  height: 18px;
  padding: 0;
  border: 2px solid var(--panel-strong);
  border-radius: 50%;
  background: var(--preset-color);
  box-shadow: 0 0 0 1px var(--line-strong);
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease;
}

.color-preset-button.active {
  box-shadow: 0 0 0 1px var(--accent), 0 0 0 5px rgba(216, 79, 53, 0.12);
}

.range-field input {
  accent-color: var(--accent);
}

.canvas-shell {
  min-height: min(74vh, 860px);
  padding: 12px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px),
    linear-gradient(180deg, #f8f9f7, #edf1f0);
  background-size: 28px 28px, 28px 28px, 100% 100%;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88);
}

#editorCanvas {
  border: 1px solid rgba(23, 27, 32, 0.18);
  border-radius: var(--radius-xl);
  background: var(--panel-strong);
  box-shadow:
    0 24px 56px rgba(26, 31, 36, 0.17),
    0 0 0 12px rgba(255, 254, 253, 0.72);
}

.empty-state-card {
  max-width: 430px;
  padding: 22px 24px;
  border: 1px dashed rgba(21, 154, 150, 0.42);
  border-radius: var(--radius-xl);
  background: rgba(255, 254, 253, 0.9);
  box-shadow: 0 18px 40px rgba(26, 31, 36, 0.08);
}

.canvas-meta {
  grid-template-columns: minmax(220px, 1.35fr) repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.meta-card,
.status-pill,
.annotation-item,
.event-item,
.candidate-card,
.candidate-empty,
.config-card,
.advanced-card,
.markup-section,
.connection-item,
.input-debug-panel,
.advanced-panel,
.estimate-card,
.compact-details {
  border-color: var(--line);
  border-radius: var(--radius-xl);
  background: rgba(255, 254, 253, 0.78);
}

.meta-card,
.status-pill,
.config-card,
.advanced-card,
.markup-section,
.connection-item,
.estimate-card,
.input-debug-panel,
.advanced-panel,
.candidate-card,
.candidate-empty,
.event-item,
.annotation-item {
  padding: 12px;
}

.hero-meta-card {
  background: linear-gradient(135deg, var(--secondary-soft), rgba(216, 79, 53, 0.08));
}

.compact-stack {
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: rgba(255, 254, 253, 0.86);
}

.compact-details summary,
.advanced-panel summary {
  padding: 12px;
}

.compact-details > :not(summary),
.advanced-panel > :not(summary),
.input-debug-panel > :not(summary) {
  margin: 0 12px 12px;
}

.instruction-field textarea,
textarea,
input,
select {
  border-color: var(--line);
  border-radius: var(--radius-xl);
}

.instruction-field textarea {
  min-height: 86px;
  background: #f9faf8;
}

.canvas-submit-row {
  gap: 10px;
}

.canvas-submit-row .ghost-button,
.canvas-submit-row .primary-button {
  min-width: 0;
  flex: 1 1 220px;
}

.candidates-panel {
  position: sticky;
  top: 12px;
  max-height: calc(100dvh - 24px);
  grid-template-rows: auto minmax(0, 1fr);
  background: rgba(255, 254, 253, 0.9);
  overflow: auto;
}

.candidates-panel .section-head {
  padding: 2px 2px 4px;
}

.candidate-list {
  grid-template-columns: 1fr;
  gap: 8px;
}

.candidate-card,
.candidate-empty-card {
  display: grid;
  gap: 8px;
  border-radius: var(--radius-xl);
  background: var(--panel-strong);
}

.candidate-card.selected {
  border-color: rgba(216, 79, 53, 0.42);
  box-shadow:
    inset 0 0 0 1px rgba(216, 79, 53, 0.18),
    0 8px 18px rgba(216, 79, 53, 0.08);
}

.candidate-image {
  border-radius: var(--radius-sm);
  border-color: var(--line);
  background: #edf1f0;
}

.candidate-empty-card {
  min-height: 180px;
  place-content: center;
  text-align: center;
  border-style: dashed;
  color: var(--muted);
}

.settings-dialog-shell,
.image-preview-shell,
.auth-card,
.test-access-card {
  border-radius: var(--radius-xl);
}

.settings-dialog::backdrop,
.image-preview-dialog::backdrop {
  background: rgba(13, 17, 21, 0.58);
  backdrop-filter: blur(3px);
}

.first-run-tutorial {
  position: fixed;
  inset: 0;
  z-index: 90;
  width: auto;
  color: var(--ink);
  pointer-events: auto;
}

.first-run-tutorial[hidden] {
  display: none !important;
}

.tutorial-spotlight {
  position: fixed;
  left: var(--tutorial-spot-left, 16px);
  top: var(--tutorial-spot-top, 16px);
  width: var(--tutorial-spot-width, 120px);
  height: var(--tutorial-spot-height, 72px);
  border: 1px solid rgba(255, 254, 253, 0.92);
  border-radius: 10px;
  background: rgba(255, 254, 253, 0.04);
  box-shadow:
    0 0 0 9999px rgba(13, 17, 21, 0.66),
    0 0 0 6px rgba(21, 154, 150, 0.2),
    0 18px 56px rgba(21, 154, 150, 0.24);
  pointer-events: none;
  transition: left 180ms ease, top 180ms ease, width 180ms ease, height 180ms ease;
}

.tutorial-card {
  position: fixed;
  left: var(--tutorial-left, 24px);
  top: var(--tutorial-top, 24px);
  width: min(336px, calc(100vw - 28px));
  gap: 10px;
  padding: 14px;
  border: 1px solid rgba(255, 254, 253, 0.72);
  border-radius: var(--radius-xl);
  background: rgba(255, 254, 253, 0.96);
  box-shadow: 0 22px 60px rgba(5, 9, 13, 0.28);
  backdrop-filter: blur(18px);
  pointer-events: auto;
}

.tutorial-topline {
  color: var(--secondary);
  font-size: 0.74rem;
  font-weight: 900;
}

.tutorial-card h2 {
  font-size: 1.04rem;
}

.tutorial-card p {
  color: #4d5961;
  font-size: 0.86rem;
}

.tutorial-actions .compact-button {
  min-height: 36px;
  padding: 0 13px;
}

.tutorial-link-button {
  min-height: 30px;
  padding: 0 9px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: #4d5961;
}

.tutorial-highlight {
  outline: none;
  box-shadow: none;
  scroll-margin: 120px;
}

.test-access-shell {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.76), rgba(244, 245, 242, 0.94)),
    linear-gradient(90deg, rgba(80, 106, 132, 0.08), transparent 42%),
    var(--bg);
}

.test-access-card {
  border-color: var(--line);
  background: rgba(255, 254, 253, 0.9);
  box-shadow: var(--shadow);
}

.test-access-main h1 {
  color: var(--ink);
  letter-spacing: 0;
}

.test-access-copy {
  color: var(--muted);
}

.test-access-form,
.test-access-tips {
  border-radius: var(--radius-xl);
  background: rgba(255, 254, 253, 0.76);
}

@media (min-width: 1181px) {
  .canvas-panel {
    grid-template-rows: auto auto minmax(520px, 1fr) auto auto;
  }
}

@media (max-width: 1180px) {
  .workspace-grid {
    grid-template-columns: 1fr;
  }

  .candidates-panel {
    position: static;
    max-height: none;
  }

  .candidate-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .tool-group-inline,
  .tool-group-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 820px) {
  .page-shell {
    width: min(100vw - 12px, 100%);
    margin: 6px auto;
    padding: 0 0 18px;
  }

  .topbar,
  .canvas-panel,
  .candidates-panel {
    padding: 8px;
    border-radius: var(--radius-xl);
  }

  .topbar-actions {
    justify-content: flex-start;
  }

  .topbar-actions .finger-draw-toggle,
  .topbar-actions .upload-chip,
  .topbar-actions .ghost-button,
  .canvas-submit-row .ghost-button,
  .canvas-submit-row .primary-button {
    width: auto;
    flex: 1 1 160px;
  }

  .canvas-panel-head {
    grid-template-columns: 1fr;
  }

  .canvas-shell {
    min-height: 58dvh;
  }

  #editorCanvas {
    box-shadow:
      0 18px 40px rgba(26, 31, 36, 0.14),
      0 0 0 8px rgba(255, 254, 253, 0.72);
  }

  .canvas-meta,
  .candidate-list,
  .config-grid,
  .canvas-action-grid,
  .estimate-grid,
  .runtime-details-grid,
  .primary-estimate-grid,
  .button-row {
    grid-template-columns: 1fr;
  }

  .color-preset-row {
    grid-template-columns: repeat(5, 18px);
  }

  .tutorial-card {
    left: 10px !important;
    right: 10px;
    top: auto !important;
    bottom: 10px;
    width: auto;
  }

  .tutorial-actions {
    justify-content: stretch;
  }

  .tutorial-actions .ghost-button,
  .tutorial-actions .primary-button {
    flex: 1 1 0;
  }
}

.color-picker-shell {
  position: relative;
  min-height: 42px;
  padding: 8px;
  border-radius: var(--radius-sm);
  overflow: visible;
}

.color-input-native {
  position: static;
  inset: auto;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  opacity: 1;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.color-input-native::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-input-native::-webkit-color-swatch {
  border: 2px solid var(--panel-strong);
  border-radius: 50%;
}

.color-preset-row {
  display: flex;
  flex-wrap: wrap;
  max-width: 230px;
}


/* Gallery Studio structural migration - matches the approved prototype while keeping real IDs. */
.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.page-shell.studio-shell {
  width: min(100vw - 24px, 1720px);
  min-height: calc(100dvh - 24px);
  margin: 12px auto;
  padding: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 10px;
}

.studio-shell .topbar,
.studio-shell .studio-grid,
.studio-shell .canvas-toolbar,
.studio-shell .prompt-composer,
.studio-shell .inspector,
.studio-shell .tool-rail {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 254, 253, 0.88);
  box-shadow: var(--shadow-soft);
}

.studio-shell .topbar {
  min-height: 72px;
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 12px;
  backdrop-filter: blur(18px);
}

.brand-cluster,
.command-row,
.canvas-state,
.inline-tools,
.submit-stack,
.micro-stats {
  display: flex;
  align-items: center;
}

.brand-cluster {
  gap: 11px;
  min-width: 0;
}

.studio-shell .command-row {
  justify-content: flex-end;
  gap: 8px;
}

.icon-button,
.icon-text-button,
.rail-button {
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease, box-shadow 140ms ease, color 140ms ease;
}

.icon-button,
.rail-button {
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  color: var(--ink-soft);
  background: var(--panel-strong);
  border-color: var(--line);
}

.icon-button.compact {
  width: 34px;
  height: 34px;
}

.icon-text-button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  color: var(--ink);
  background: var(--panel-strong);
  border-color: var(--line);
  font-weight: 800;
}

.icon-text-button.upload-chip-primary,
.studio-shell .primary-button {
  color: var(--panel-strong);
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 12px 24px rgba(216, 79, 53, 0.2);
}

.icon-button:hover,
.icon-text-button:hover,
.rail-button:hover,
.studio-shell .primary-button:hover,
.studio-shell .candidate-card:hover {
  transform: translateY(-1px);
}

[data-tip] {
  position: relative;
}

[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  z-index: 20;
  width: max-content;
  max-width: 140px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  color: var(--panel-strong);
  background: var(--ink);
  font-size: 0.76rem;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 4px);
  transition: opacity 140ms ease, transform 140ms ease;
}

[data-tip]:hover::after {
  opacity: 1;
  transform: translate(-50%, 0);
}

.studio-shell .workspace-grid,
.studio-grid {
  min-height: 0;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) 330px;
  gap: 10px;
  padding: 10px;
  align-items: stretch;
  background: linear-gradient(180deg, rgba(255, 254, 253, 0.68), rgba(237, 241, 240, 0.68)), #f9faf8;
}

.tool-rail {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 8px;
  box-shadow: none !important;
}

.rail-button.active,
.icon-button.active,
.studio-shell .tool-button.active {
  color: var(--accent-strong);
  background: var(--accent-soft);
  border-color: rgba(216, 79, 53, 0.28);
}

.rail-divider {
  width: 100%;
  height: 1px;
  margin: 4px 0;
  background: var(--line);
}

.palette-label {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0;
  writing-mode: vertical-rl;
}

.color-button::before,
.rail-color-native::before {
  content: "";
  width: 18px;
  height: 18px;
  border: 2px solid var(--panel-strong);
  border-radius: 50%;
  background: var(--swatch, conic-gradient(#e76f51, #159a96, #506a84, #e7a51a, #e76f51));
  box-shadow: 0 0 0 1px var(--line-strong);
}

.color-button.active {
  color: var(--active-mark-color);
  background: var(--active-mark-soft);
  border-color: rgba(216, 79, 53, 0.28);
  box-shadow: none;
}

.rail-color-native {
  position: relative;
  overflow: hidden;
}

.rail-color-native .color-input-native {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.canvas-column {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(460px, 1fr) auto;
  gap: 10px;
}

.canvas-toolbar {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 10px;
  box-shadow: none !important;
}

.canvas-state {
  gap: 8px;
  min-width: 0;
}

.canvas-state strong {
  font-size: 0.92rem;
}

.canvas-state span:last-child,
.micro-stats,
.range-control span,
.studio-shell .candidate-card span,
.studio-note span,
.zoom-bar {
  color: var(--muted);
  font-size: 0.78rem;
}

.state-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--secondary);
  box-shadow: 0 0 0 4px var(--secondary-soft);
}

.inline-tools {
  justify-content: flex-end;
  gap: 8px;
  min-width: 0;
}

.range-control {
  height: 34px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel-strong);
}

.range-control input {
  width: 96px;
  accent-color: var(--accent);
}

.range-control strong {
  width: 22px;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.canvas-stage {
  position: relative;
  min-width: 0;
  min-height: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(var(--line-soft) 1px, transparent 1px), linear-gradient(90deg, var(--line-soft) 1px, transparent 1px), linear-gradient(180deg, #f8f9f7, #edf1f0);
  background-size: 28px 28px, 28px 28px, 100% 100%;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88);
}

.ruler {
  position: absolute;
  z-index: 2;
  background: rgba(255, 254, 253, 0.88);
  border-color: var(--line);
  border-style: solid;
}

.ruler.horizontal {
  left: 0;
  right: 0;
  top: 0;
  height: 24px;
  border-width: 0 0 1px;
}

.ruler.vertical {
  left: 0;
  top: 0;
  bottom: 0;
  width: 24px;
  border-width: 0 1px 0 0;
}

.canvas-shell.artboard-shell {
  position: relative;
  width: calc(100% - 72px);
  height: calc(100% - 72px);
  min-height: 420px;
  margin: 36px;
  padding: 12px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  box-shadow: none;
}

.canvas-shell.artboard-shell #editorCanvas {
  max-width: 100%;
  max-height: 100%;
  border: 1px solid rgba(23, 27, 32, 0.18);
  border-radius: var(--radius-sm);
  background: var(--panel-strong);
  box-shadow: 0 24px 56px rgba(26, 31, 36, 0.17), 0 0 0 12px rgba(255, 254, 253, 0.72);
}

.canvas-shell.artboard-shell .empty-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
}

.studio-shell .empty-state-card {
  max-width: 430px;
  padding: 22px 24px;
  border: 1px dashed rgba(21, 154, 150, 0.42);
  border-radius: var(--radius-sm);
  background: rgba(255, 254, 253, 0.9);
  box-shadow: 0 18px 40px rgba(26, 31, 36, 0.08);
}

.zoom-bar {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.zoom-bar span {
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 254, 253, 0.9);
}

.prompt-composer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  gap: 12px;
  padding: 10px;
  box-shadow: none !important;
}

.prompt-field {
  min-width: 0;
  display: grid;
  gap: 6px;
}

.prompt-field span {
  color: var(--muted-strong);
  font-size: 0.8rem;
  font-weight: 800;
}

.prompt-composer textarea {
  width: 100%;
  min-height: 86px;
  resize: vertical;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink);
  background: var(--surface-soft, #f9faf8);
  line-height: 1.55;
}

.submit-stack {
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-end;
  gap: 8px;
}

.micro-stats {
  justify-content: space-between;
  gap: 8px;
}

.micro-stats span {
  min-width: 0;
  padding: 5px 7px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-cool, #edf1f0);
  white-space: nowrap;
}

.micro-stats .inline-color-dot {
  display: inline-flex;
  align-items: center;
}

.studio-shell .color-swatch {
  width: 18px;
  height: 18px;
  display: inline-block;
  border: 2px solid var(--panel-strong);
  border-radius: 50%;
  box-shadow: 0 0 0 1px var(--line-strong);
}

.prompt-options {
  max-height: 240px;
  overflow: auto;
}

.inspector {
  min-width: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  gap: 12px;
  padding: 10px;
  box-shadow: none !important;
  position: static;
  max-height: none;
  overflow: hidden;
}

.candidate-panel {
  min-height: 0;
  display: grid;
  align-content: start;
  gap: 12px;
}

.section-title {
  display: grid;
  gap: 2px;
}

.studio-shell .candidate-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.studio-shell .candidate-card,
.studio-shell .candidate-empty-card {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  min-height: 0;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel-strong);
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, box-shadow 140ms ease;
}

.studio-shell .candidate-empty-card {
  grid-template-columns: 1fr;
  min-height: 180px;
  place-content: center;
  text-align: center;
  border-style: dashed;
  color: var(--muted);
  cursor: default;
}

.studio-shell .candidate-card.selected {
  border-color: rgba(216, 79, 53, 0.42);
  box-shadow: inset 0 0 0 1px rgba(216, 79, 53, 0.18), 0 8px 18px rgba(216, 79, 53, 0.08);
}

.studio-shell .candidate-card img,
.studio-shell .candidate-image {
  width: 82px;
  aspect-ratio: 1 / 1;
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: #edf1f0;
}

.studio-shell .candidate-card strong,
.studio-note strong {
  display: block;
  min-width: 0;
  color: var(--ink);
  font-size: 0.9rem;
}

.studio-shell .candidate-card span {
  display: block;
  margin-top: 3px;
}

.studio-note {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--secondary-soft), rgba(255, 254, 253, 0.88));
}

.note-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  color: var(--secondary);
  background: var(--panel-strong);
}

.studio-shell .canvas-submit-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.18fr);
  gap: 8px;
}

.studio-shell .canvas-submit-row .ghost-button,
.studio-shell .canvas-submit-row .primary-button {
  width: 100%;
  min-width: 0;
}

.icon-button.danger {
  color: var(--danger);
  background: rgba(166, 27, 67, 0.06);
  border-color: rgba(166, 27, 67, 0.2);
}

@media (max-width: 1180px) {
  .studio-shell .topbar {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .studio-shell .command-row {
    justify-content: flex-start;
  }

  .studio-shell .workspace-grid,
  .studio-grid {
    grid-template-columns: 54px minmax(0, 1fr);
  }

  .studio-shell .inspector {
    grid-column: 1 / -1;
    grid-template-rows: auto auto;
  }

  .studio-shell .candidate-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .studio-shell .candidate-card {
    grid-template-columns: 1fr;
  }

  .studio-shell .candidate-card img,
  .studio-shell .candidate-image {
    width: 100%;
  }
}

@media (max-width: 820px) {
  .page-shell.studio-shell {
    width: min(100vw - 12px, 100%);
    margin: 6px auto;
    padding: 0 0 18px;
  }

  .studio-shell .workspace-grid,
  .studio-grid {
    grid-template-columns: 1fr;
    padding: 8px;
  }

  .tool-rail {
    flex-direction: row;
    justify-content: flex-start;
    overflow-x: auto;
  }

  .rail-divider {
    width: 1px;
    height: 34px;
    margin: 0 2px;
  }

  .palette-label {
    writing-mode: horizontal-tb;
  }

  .canvas-column {
    grid-template-rows: auto minmax(420px, 62dvh) auto;
  }

  .canvas-toolbar,
  .prompt-composer {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .canvas-toolbar {
    display: grid;
  }

  .inline-tools {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .range-control {
    flex: 1 1 160px;
  }

  .range-control input {
    width: 100%;
  }

  .canvas-shell.artboard-shell {
    width: calc(100% - 36px);
    height: calc(100% - 56px);
    min-height: 360px;
    margin: 28px 18px;
  }

  .studio-shell .candidate-list {
    grid-template-columns: 1fr;
  }

  .studio-shell .canvas-submit-row {
    grid-template-columns: 1fr;
  }

  .command-row .icon-text-button,
  .command-row .finger-draw-toggle {
    flex: 1 1 160px;
  }
}


/* Tutorial in-place visual guide */
.tutorial-card {
  max-height: calc(100dvh - 32px);
  overflow: auto;
}

.tutorial-active .upload-chip-primary {
  position: relative;
}

.tutorial-active[data-tutorial-step="upload"] .upload-chip-primary {
  animation: tutorial-upload-pulse 1.6s ease-in-out infinite;
}

.tutorial-canvas-demo,
.tutorial-prompt-demo,
.tutorial-candidate-demo {
  pointer-events: none;
}

.tutorial-canvas-demo[hidden],
.tutorial-prompt-demo[hidden],
.tutorial-candidate-demo[hidden] {
  display: none !important;
}

.tutorial-canvas-demo {
  position: absolute;
  inset: 18px;
  z-index: 4;
  display: grid;
  place-items: center;
}

.tutorial-demo-artboard {
  width: min(52vh, 42vw, 440px);
  min-width: 260px;
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 1px solid rgba(23, 27, 32, 0.16);
  border-radius: var(--radius-sm);
  background: rgba(255, 254, 253, 0.86);
  box-shadow:
    0 24px 56px rgba(26, 31, 36, 0.17),
    0 0 0 12px rgba(255, 254, 253, 0.52);
}

.tutorial-demo-image {
  position: relative;
  aspect-ratio: 941 / 1672;
  overflow: hidden;
  border: 1px solid rgba(23, 27, 32, 0.16);
  border-radius: var(--radius-sm);
  background: #edf1f0;
  box-shadow: inset 0 0 0 10px rgba(255, 254, 253, 0.38);
}

.tutorial-demo-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.tutorial-point-demo,
.tutorial-pen-demo {
  position: absolute;
  display: block;
}

.tutorial-draw-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  fill: none;
  pointer-events: none;
}

.tutorial-draw-path {
  fill: rgba(216, 79, 53, 0.08);
  stroke: #d84f35;
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 900;
  stroke-dashoffset: 900;
  opacity: 0;
}

.tutorial-point-demo {
  right: 25%;
  bottom: 28%;
  width: 18px;
  height: 18px;
  border: 4px solid var(--panel-strong);
  border-radius: 50%;
  background: var(--secondary);
  box-shadow: 0 0 0 6px rgba(21, 154, 150, 0.22);
  opacity: 0;
}

.tutorial-pen-demo {
  left: 60%;
  top: 28%;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: #20252b;
  box-shadow: 0 0 0 6px rgba(32, 37, 43, 0.12);
  opacity: 0;
}

.tutorial-demo-caption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--muted-strong);
  font-size: 0.76rem;
}

.tutorial-demo-caption strong {
  color: var(--ink);
  font-size: 0.82rem;
}

.tutorial-active[data-tutorial-step="upload"] .tutorial-demo-artboard {
  animation: tutorial-fake-upload 1.45s ease-out both;
}

.tutorial-active[data-tutorial-step="mark"] .tutorial-draw-path,
.tutorial-active[data-tutorial-step="instruction"] .tutorial-draw-path,
.tutorial-active[data-tutorial-step="candidates"] .tutorial-draw-path {
  opacity: 1;
  animation: tutorial-inline-draw 2.7s ease-in-out infinite;
}

.tutorial-active[data-tutorial-step="mark"] .tutorial-point-demo,
.tutorial-active[data-tutorial-step="instruction"] .tutorial-point-demo,
.tutorial-active[data-tutorial-step="candidates"] .tutorial-point-demo {
  opacity: 1;
  animation: tutorial-point-pulse 1.7s ease-in-out infinite;
}

.tutorial-active[data-tutorial-step="mark"] .tutorial-pen-demo {
  animation: tutorial-inline-pen 2.7s ease-in-out infinite;
}

.prompt-field {
  position: relative;
}

.tutorial-prompt-demo {
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 10px;
  z-index: 5;
  display: grid;
  gap: 5px;
  padding: 9px 10px;
  border: 1px solid rgba(216, 79, 53, 0.22);
  border-radius: var(--radius-sm);
  background: rgba(255, 254, 253, 0.94);
  box-shadow: 0 12px 26px rgba(26, 31, 36, 0.12);
  animation: tutorial-prompt-fade 1.1s ease-out both;
}

.tutorial-prompt-demo span {
  color: var(--secondary);
  font-size: 0.72rem;
  font-weight: 900;
}

.tutorial-prompt-demo strong {
  color: var(--ink-soft);
  font-size: 0.84rem;
  line-height: 1.4;
}

.candidate-panel {
  position: relative;
}

.tutorial-candidate-demo {
  position: absolute;
  left: 0;
  right: 0;
  top: 56px;
  z-index: 5;
  display: grid;
  gap: 8px;
  padding: 2px;
  animation: tutorial-candidates-rise 0.7s ease-out both;
}

.tutorial-candidate-card {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 254, 253, 0.96);
  box-shadow: 0 10px 24px rgba(26, 31, 36, 0.08);
}

.tutorial-candidate-card.selected {
  border-color: rgba(216, 79, 53, 0.42);
  box-shadow: inset 0 0 0 1px rgba(216, 79, 53, 0.18), 0 10px 24px rgba(216, 79, 53, 0.12);
}

.tutorial-candidate-card span {
  width: 82px;
  aspect-ratio: 1;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background:
    radial-gradient(circle at 72% 24%, rgba(231, 165, 26, 0.72) 0 12%, transparent 13%),
    linear-gradient(135deg, rgba(21, 154, 150, 0.24), rgba(216, 79, 53, 0.18)),
    #edf1f0;
}

.tutorial-candidate-card strong {
  color: var(--ink);
  font-size: 0.9rem;
}

@keyframes tutorial-upload-pulse {
  0%, 100% { box-shadow: 0 12px 24px rgba(216, 79, 53, 0.2); }
  50% { box-shadow: 0 0 0 6px rgba(21, 154, 150, 0.18), 0 16px 30px rgba(216, 79, 53, 0.28); }
}

@keyframes tutorial-fake-upload {
  0% { opacity: 0; transform: translateY(14px) scale(0.96); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes tutorial-inline-draw {
  0% { stroke-dashoffset: 900; opacity: 0.25; }
  16% { opacity: 1; }
  64%, 100% { stroke-dashoffset: 0; opacity: 1; }
}

@keyframes tutorial-inline-pen {
  0% { transform: translate(-95px, 55px) scale(0.84); opacity: 0; }
  16% { opacity: 1; }
  58% { transform: translate(42px, 170px) scale(1); opacity: 1; }
  100% { transform: translate(42px, 170px) scale(1); opacity: 0; }
}

@keyframes tutorial-point-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.12); }
}

@keyframes tutorial-prompt-fade {
  0% { opacity: 0; transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes tutorial-candidates-rise {
  0% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1180px) {
  .tutorial-candidate-demo {
    position: static;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .tutorial-candidate-card {
    grid-template-columns: 1fr;
  }

  .tutorial-candidate-card span {
    width: 100%;
  }
}

@media (max-width: 720px) {
  .tutorial-demo-artboard {
    width: min(72vw, 330px);
    min-width: 230px;
  }

  .tutorial-prompt-demo {
    position: static;
    margin-top: -74px;
  }
}