:root {
  color-scheme: dark;
  --bg: #101112;
  --panel: #1b1d1f;
  --panel-2: #24272a;
  --panel-3: #151719;
  --text: #e8e8e6;
  --muted: #a4a7a7;
  --line: #373b3f;
  --line-soft: #2a2e31;
  --accent: #f08a24;
  --accent-2: #ffb15c;
  --danger: #c85f55;
  --button: #272b2f;
  --button-hover: #33383d;
  --button-active: #f08a24;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

.app {
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 16px;
  height: 100vh;
  padding: 16px;
  overflow: hidden;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.controls {
  display: flex;
  flex-direction: column;
  padding: 20px;
  min-height: 0;
  overflow: hidden;
  overscroll-behavior: contain;
}

.controls > * {
  flex-shrink: 0;
}

.controls-scroll {
  display: flex;
  flex: 1 1 auto;
  min-height: 0;
  flex-direction: column;
  gap: 18px;
  overflow-y: auto;
  padding-right: 4px;
}

.ai-panel {
  display: grid;
  grid-template-rows: auto;
  gap: 8px;
  flex: 0 0 auto;
  min-height: 0;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.ai-panel.open {
  grid-template-rows: auto minmax(0, 1fr);
  flex: 3 1 0;
  min-height: 360px;
}

.ai-panel-head {
  display: flex;
  gap: 8px;
  align-items: center;
  justify-content: space-between;
}

.ai-panel-toggle {
  justify-content: flex-start;
  min-width: 0;
  min-height: 32px;
  padding: 0 10px;
  background: transparent;
  border-color: var(--line);
  color: var(--text);
}

.ai-panel-toggle::before {
  content: ">";
  margin-right: 6px;
  color: var(--accent);
}

.ai-panel.open .ai-panel-toggle::before {
  content: "v";
}

.ai-panel-head span {
  font-size: 14px;
  font-weight: 700;
}

.ai-panel-head > button:not(.ai-panel-toggle),
.ai-chat-input-row button {
  min-height: 32px;
  padding: 0 10px;
}

.ai-panel-body {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto auto;
  gap: 8px;
  min-height: 0;
}

.ai-panel-body[hidden] {
  display: none;
}

.ai-chat-log {
  min-height: 0;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #121619;
  padding: 8px;
  font-size: 12px;
  line-height: 1.45;
}

.ai-chat-message {
  margin: 0 0 8px;
  padding: 7px 8px;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  white-space: pre-wrap;
}

.ai-chat-message.user {
  border-left: 3px solid var(--accent);
}

.ai-chat-message.assistant {
  border-left: 3px solid var(--accent-2);
}

.ai-chat-message.system {
  color: var(--muted);
}

.ai-thinking {
  display: inline-flex;
  gap: 4px;
  align-items: center;
}

.ai-thinking-dot {
  animation: ai-thinking-pulse 1.05s infinite ease-in-out;
}

.ai-thinking-dot:nth-child(2) {
  animation-delay: 0.15s;
}

.ai-thinking-dot:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes ai-thinking-pulse {
  0%, 80%, 100% {
    opacity: 0.25;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-2px);
  }
}

.ai-chat-input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 64px;
  gap: 8px;
}

.ai-chat-input-row textarea {
  resize: none;
  min-height: 48px;
}

.ai-status {
  color: var(--muted);
  font-size: 11px;
  min-height: 16px;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  line-height: 1.1;
}

h2 {
  font-size: 16px;
}

p,
.drop-text,
.stats {
  color: var(--muted);
}

.brand p {
  margin-top: 8px;
  line-height: 1.55;
}

.dropzone {
  display: grid;
  gap: 6px;
  padding: 18px;
  border: 1px dashed #556168;
  border-radius: 8px;
  background: var(--panel-2);
  cursor: pointer;
}

.dropzone:hover,
.dropzone.drag {
  border-color: var(--accent);
}

.dropzone input {
  display: none;
}

.drop-title {
  font-weight: 700;
}

.drop-text {
  font-size: 13px;
}

.small-drop {
  padding: 12px;
}

.back-image-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 92px;
  gap: 8px;
  align-items: stretch;
}

.back-image-row button {
  background: var(--panel-2);
  border-color: var(--line);
  color: var(--text);
}

.grid {
  display: grid;
  gap: 14px;
}

.compact-row {
  display: grid;
  grid-template-columns: minmax(90px, 0.8fr) minmax(100px, 0.9fr) minmax(140px, 1.2fr);
  gap: 10px;
  align-items: end;
}

.compact-row-2 {
  grid-template-columns: minmax(78px, 0.75fr) minmax(78px, 0.75fr) minmax(132px, 1.2fr) 52px;
}

.compact-row label {
  min-width: 0;
}

.compact-row input[type="number"] {
  height: 34px;
}

.basic-panel {
  overflow: visible;
}

.basic-panel .grid {
  gap: 10px;
}

.basic-panel .compact-row {
  grid-template-columns: minmax(74px, 0.75fr) minmax(86px, 0.85fr) minmax(0, 1.2fr);
  gap: 8px;
}

.basic-panel .compact-row-2 {
  grid-template-columns: 78px minmax(132px, 1fr) 38px;
}

.depth-feature-row {
  display: grid;
  grid-template-columns: minmax(70px, 92px);
}

.basic-panel .depth-feature-row label {
  font-size: 13px;
  font-weight: 800;
  color: var(--accent-2);
}

.basic-panel #depth {
  height: 40px;
  border-color: #f0c94a;
  background: #ffe680;
  color: #1b1400;
  font-size: 15px;
  font-weight: 800;
  box-shadow: 0 0 0 1px rgba(255, 230, 128, 0.25);
}

.measure-row {
  display: grid;
  grid-template-columns: 1fr;
}

.measure-row output {
  min-height: 34px;
  display: flex;
  align-items: center;
  color: var(--muted);
  font-size: 12px;
}

.measure-row button.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #08100f;
}

.basic-panel label {
  font-size: 12px;
}

.basic-panel input[type="number"],
.basic-panel select {
  height: 34px;
  padding: 0 9px;
}

.basic-panel .range-inline {
  grid-template-columns: minmax(0, 1fr) 24px;
}

.basic-panel .range-inline output {
  font-size: 11px;
}

.basic-panel .compact-row-2 label:last-child {
  text-align: center;
}

.basic-panel .compact-row-2 input[type="color"] {
  width: 38px;
  height: 34px;
  padding: 3px;
}

.range-inline {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 32px;
  gap: 6px;
  align-items: center;
}

.range-inline output {
  text-align: right;
  font-size: 12px;
}

.settings-panel {
  display: grid;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.54);
}

.panel-title {
  color: var(--text);
  font-weight: 700;
}

.preset-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto auto;
  gap: 6px;
  align-items: end;
}

.preset-row label {
  min-width: 0;
}

.preset-row button {
  min-height: 34px;
  padding: 0 10px;
  white-space: nowrap;
}

.settings-group {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.54);
}

.settings-group summary {
  min-height: 38px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  user-select: none;
}

.settings-group[open] {
  padding-bottom: 12px;
}

.settings-group[open] summary {
  border-bottom: 1px solid var(--line);
  margin-bottom: 12px;
}

.settings-group .grid {
  padding: 0 12px;
}

.two-col {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.hidden {
  display: none !important;
}

.source-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #121619;
}

.source-tabs button {
  min-height: 34px;
  background: transparent;
  color: var(--muted);
}

.source-tabs button.active {
  background: var(--accent);
  color: #061412;
}

.source-add-row {
  position: relative;
}

.source-add-row > button {
  width: 100%;
}

.source-add-menu {
  position: absolute;
  left: 0;
  top: calc(100% + 6px);
  z-index: 8;
  display: grid;
  gap: 4px;
  width: max-content;
  min-width: 100%;
  padding: 6px;
  border: 1px solid rgba(127, 214, 255, 0.55);
  border-radius: 8px;
  background: rgba(36, 122, 173, 0.96);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.34);
}

.source-add-menu[hidden] {
  display: none;
}

.source-add-menu button {
  min-height: 34px;
  background: rgba(227, 247, 255, 0.16);
  color: #f7fcff;
  border-color: rgba(255, 255, 255, 0.42);
}

.source-add-menu button:hover {
  background: rgba(255, 255, 255, 0.28);
  border-color: #ffffff;
}

.source-add-menu button[aria-expanded="true"] {
  background: rgba(255, 255, 255, 0.32);
  border-color: #ffffff;
}

.merge-menu-wrap {
  position: relative;
  display: inline-flex;
  min-width: 0;
}

.merge-menu-wrap > button {
  width: 100%;
}

.merge-mode-menu {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 18;
  display: flex;
  gap: 4px;
  width: max-content;
  min-width: 210px;
  padding: 6px;
  border: 1px solid rgba(127, 214, 255, 0.55);
  border-radius: 8px;
  background: rgba(36, 122, 173, 0.97);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.34);
}

.merge-mode-menu[hidden] {
  display: none;
}

.merge-mode-menu button {
  min-height: 32px;
  padding: 0 10px;
  background: rgba(227, 247, 255, 0.16);
  color: #f7fcff;
  border-color: rgba(255, 255, 255, 0.42);
  white-space: nowrap;
}

.merge-mode-menu button:hover {
  background: rgba(255, 255, 255, 0.28);
  border-color: #ffffff;
}

.shape-add-tree {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 90;
  display: flex;
  align-items: stretch;
  gap: 4px;
  min-width: max-content;
  max-width: calc(100vw - 16px);
  margin-left: 0;
  padding: 6px;
  border: 1px solid rgba(127, 214, 255, 0.55);
  border-radius: 8px;
  background: rgba(36, 122, 173, 0.98);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.34);
}

.shape-add-tree[hidden] {
  display: none;
}

.shape-add-tree button {
  min-height: 30px;
  width: auto;
  white-space: nowrap;
  padding-inline: 12px;
  background: rgba(12, 31, 42, 0.28);
}

.shape-add-tree button::before {
  content: none;
}

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

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

.preview-layer-panel {
  position: absolute;
  right: 16px;
  bottom: 16px;
  z-index: 3;
  width: min(260px, calc(100% - 32px));
  max-height: calc(100% - 32px);
  overflow: auto;
  font-size: 12px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(18, 22, 25, 0.92);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(8px);
}

.preview-layer-panel summary {
  position: sticky;
  top: 0;
  z-index: 1;
  font-size: 12px;
  background: rgba(18, 22, 25, 0.96);
}

.preview-layer-panel .layer-panel {
  padding: 0 8px 8px;
  gap: 7px;
}

.preview-layer-panel .layer-panel label,
.preview-layer-panel .layer-panel input,
.preview-layer-panel .layer-panel select,
.preview-layer-panel .layer-panel button,
.preview-layer-panel .layer-panel span {
  font-size: 11px;
}

.preview-layer-panel .layer-actions button {
  min-height: 28px;
  padding: 0 5px;
}

.preview-layer-panel .layer-visible-action {
  min-height: 28px;
  padding: 0 5px;
}

.preview-layer-panel .layer-transform-grid,
.preview-layer-panel .shape-layer-options {
  gap: 5px;
}

.preview-layer-panel .layer-transform-grid label {
  gap: 3px;
}

.preview-layer-panel #layerSelect {
  display: none;
}

.preview-layer-panel .layer-list {
  max-height: min(390px, calc(100vh - 360px));
}

.preview-layer-panel .layer-item {
  grid-template-columns: 18px 34px minmax(0, 1fr);
  gap: 6px;
  min-height: 48px;
  padding: 4px 6px;
}

.preview-layer-panel .layer-thumb {
  width: 34px;
  height: 34px;
}

.preview-layer-panel .layer-transform-grid input {
  min-width: 0;
  padding: 0 5px;
}

.preview-layer-panel .angle-snap-row {
  grid-template-columns: minmax(0, 1fr) 24px;
  gap: 3px;
}

.preview-layer-panel .angle-snap-btn {
  min-height: 28px;
  width: 24px;
}

.preview-layer-panel .compact-row {
  gap: 6px;
}

.preview-layer-panel .compact-row label {
  display: grid;
  gap: 3px;
  min-height: 0;
}

.layer-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.layer-visible-action {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  cursor: pointer;
}

.layer-actions .layer-visible-action input {
  width: 14px;
  height: 14px;
}

#layerSelect {
  min-height: 96px;
}

.layer-list {
  display: grid;
  max-height: min(440px, calc(100vh - 340px));
  overflow: auto;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  background: rgba(8, 10, 12, 0.42);
}

.layer-list:empty::before {
  content: "No layers";
  padding: 12px;
  color: var(--muted);
  font-size: 12px;
}

.layer-item {
  display: grid;
  grid-template-columns: 22px 42px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  min-height: 54px;
  padding: 5px 8px;
  border: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.11);
  background: rgba(58, 62, 62, 0.62);
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.layer-item:last-child {
  border-bottom: 0;
}

.layer-item:hover {
  background: rgba(92, 101, 104, 0.72);
}

.layer-item.active {
  background: rgba(118, 136, 166, 0.82);
}

.layer-item.selected:not(.active) {
  background: rgba(82, 105, 134, 0.72);
  box-shadow: inset 3px 0 0 rgba(255, 196, 87, 0.78);
}

.layer-item.hidden-layer {
  opacity: 0.55;
}

.layer-item.group {
  min-height: 34px;
  grid-template-columns: 22px 28px minmax(0, 1fr);
  background: rgba(45, 49, 50, 0.78);
}

.layer-visibility {
  width: 20px;
  height: 28px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #d7dee0;
  font-size: 14px;
}

.layer-thumb {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background:
    linear-gradient(45deg, #d9d9d9 25%, transparent 25%),
    linear-gradient(-45deg, #d9d9d9 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #d9d9d9 75%),
    linear-gradient(-45deg, transparent 75%, #d9d9d9 75%),
    #ffffff;
  background-size: 12px 12px;
  background-position: 0 0, 0 6px, 6px -6px, -6px 0;
  object-fit: contain;
}

.layer-folder-thumb {
  display: grid;
  place-items: center;
  width: 26px;
  height: 24px;
  color: #cfd7d9;
  font-size: 18px;
}

.layer-text {
  min-width: 0;
}

.layer-meta {
  overflow: hidden;
  color: #f0f3f4;
  font-size: 11px;
  line-height: 1.2;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.layer-name {
  overflow: hidden;
  color: #f7f9fa;
  font-size: 12px;
  line-height: 1.25;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.layer-context-menu {
  position: fixed;
  z-index: 20;
  min-width: 128px;
  padding: 5px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.98);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.36);
}

.layer-context-menu button {
  width: 100%;
  min-height: 30px;
  justify-content: flex-start;
  padding: 0 10px;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: left;
}

.layer-context-menu button:hover {
  background: rgba(91, 230, 206, 0.14);
}

.layer-context-menu[hidden] {
  display: none;
}

.shape-layer-options {
  display: grid;
  gap: 8px;
}

.shape-texture-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 62px 62px;
  gap: 8px;
  align-items: end;
}

.shape-texture-controls button {
  min-height: 32px;
}

.shape-texture-controls label {
  gap: 4px;
}

.shape-texture-menu {
  display: grid;
  gap: 8px;
  padding: 8px;
  border: 1px solid rgba(127, 214, 255, 0.36);
  border-radius: 6px;
  background: rgba(12, 31, 42, 0.28);
}

.shape-texture-menu[hidden] {
  display: none;
}

.shape-texture-menu-title {
  font-size: 12px;
  color: var(--muted);
}

.shape-stock-texture-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 5px;
}

.shape-stock-texture-list button {
  display: grid;
  gap: 3px;
  min-height: 50px;
  padding: 3px;
  overflow: hidden;
  border-color: rgba(255, 255, 255, 0.32);
  font-size: 10px;
  line-height: 1.05;
  color: var(--text);
}

.shape-stock-texture-swatch {
  display: block;
  min-height: 28px;
  border-radius: 3px;
  background-size: cover;
  background-position: center;
}

.shape-stock-texture-list button.active {
  outline: 2px solid var(--accent-2);
  outline-offset: 1px;
}

.shape-texture-menu-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.layer-transform-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.angle-snap-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 28px;
  gap: 5px;
}

.angle-snap-row input {
  min-width: 0;
}

.angle-snap-btn {
  min-height: 30px;
  padding: 0;
}

.text-panel {
  display: grid;
  gap: 14px;
}

.shape-panel {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  font-size: 13px;
  color: var(--muted);
}

.check-row {
  display: flex;
  align-items: center;
  gap: 9px;
}

.check-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.color-row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 8px;
}

.font-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.text-input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 64px;
  gap: 8px;
}

.font-row button {
  min-width: 112px;
}

.text-style-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.text-style-row label {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.text-style-row input[type="number"] {
  height: 34px;
}

.text-style-row .range-inline,
.text-style-row .color-mode-row {
  min-width: 0;
}

.text-style-row .text-check-row {
  grid-template-columns: 74px minmax(0, 1fr);
}

.color-mode-row {
  display: grid;
  grid-template-columns: minmax(96px, 1fr) 38px 38px;
  gap: 6px;
  align-items: center;
}

.color-mode-row input[type="color"] {
  width: 38px;
}

.gradient-pad {
  position: relative;
  grid-column: 2;
  height: 58px;
  margin-top: 2px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background:
    linear-gradient(90deg, rgba(110, 198, 184, 0.16), rgba(242, 184, 75, 0.2)),
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    #121619;
  background-size: auto, 20px 20px, 20px 20px, auto;
  cursor: crosshair;
  touch-action: none;
}

.gradient-pad::before {
  content: "";
  position: absolute;
  inset: 50% 8px auto;
  border-top: 1px solid rgba(237, 241, 242, 0.28);
}

.gradient-pad::after {
  content: "";
  position: absolute;
  inset: 8px auto 8px 50%;
  border-left: 1px solid rgba(237, 241, 242, 0.28);
}

.gradient-pad-handle {
  position: absolute;
  left: 100%;
  top: 50%;
  z-index: 1;
  width: 14px;
  height: 14px;
  border: 2px solid #08100f;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 2px rgba(237, 241, 242, 0.9);
  transform: translate(-50%, -50%);
  pointer-events: none;
}

input[type="color"] {
  width: 52px;
  height: 38px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #121619;
}

input[type="number"],
input[type="text"],
input[type="range"],
select,
textarea {
  width: 100%;
}

input[type="number"],
input[type="text"],
select,
textarea {
  height: 38px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #121619;
  color: var(--text);
}

textarea {
  min-height: 78px;
  padding: 10px;
  resize: vertical;
  line-height: 1.4;
}

select {
  appearance: none;
}

input[type="range"] {
  accent-color: var(--accent);
}

output {
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

button {
  min-height: 40px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--accent);
  color: #061412;
  font-weight: 700;
  cursor: pointer;
}

button:nth-child(2) {
  background: var(--accent-2);
  color: #191103;
}

button:nth-child(3) {
  background: #8db5ff;
  color: #071226;
}

button:nth-child(4) {
  background: #d7dee0;
  color: #141719;
}

.source-tabs button,
.source-tabs button:nth-child(2),
.source-tabs button:nth-child(3),
.source-tabs button:nth-child(4) {
  background: transparent;
  color: var(--muted);
}

.source-tabs button.active {
  background: var(--accent);
  color: #061412;
}

.view-toggle button,
.view-toggle button:nth-child(2),
.view-toggle button:nth-child(3),
.view-toggle button:nth-child(4) {
  background: transparent;
  color: var(--muted);
}

.view-toggle button.active {
  background: var(--accent);
  color: #061412;
}

.color-row button {
  background: var(--panel-2);
  border-color: var(--line);
  color: var(--text);
}

.font-row button {
  min-height: 38px;
  background: var(--panel-2);
  border-color: var(--line);
  color: var(--text);
}

body.picking-color canvas {
  cursor: crosshair;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.stats {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-top: 4px;
  font-size: 13px;
}

.stats div {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 8px;
}

dt,
dd {
  margin: 0;
}

dt {
  color: #d4dbdd;
}

.language-panel {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.language-panel label {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.language-panel select {
  min-height: 34px;
}

.rebuild-footer {
  position: sticky;
  bottom: 0;
  z-index: 2;
  padding-top: 10px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(27, 31, 34, 0.86), var(--panel) 34%);
}

.rebuild-footer button {
  width: 100%;
  min-height: 38px;
  background: var(--accent);
  border-color: transparent;
  color: #061412;
  font-weight: 700;
}

.rebuild-footer button:disabled {
  opacity: 0.46;
  cursor: not-allowed;
}

.preview {
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  overflow: hidden;
}

.preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
}

.preview-tools {
  display: flex;
  align-items: center;
  gap: 12px;
}

.preview-smooth-row {
  min-height: 30px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--text);
  font-size: 12px;
  white-space: nowrap;
}

.preview-smooth-row input {
  accent-color: var(--accent);
}

.preview-actions {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  min-width: 0;
  flex-wrap: wrap;
}

.preview-actions button {
  min-height: 32px;
  padding: 0 10px;
  border-color: var(--line);
  background: var(--panel-2);
  color: var(--text);
  font-size: 12px;
}

.model-save-wrap {
  position: relative;
  display: inline-flex;
}

.model-save-wrap > button {
  width: 100%;
}

.model-save-menu {
  position: absolute;
  left: 0;
  top: calc(100% + 6px);
  z-index: 8;
  display: grid;
  gap: 4px;
  width: max-content;
  min-width: 180px;
  padding: 6px;
  border: 1px solid rgba(127, 214, 255, 0.55);
  border-radius: 8px;
  background: rgba(36, 122, 173, 0.96);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.34);
}

.model-save-menu[hidden] {
  display: none;
}

.model-save-menu button {
  justify-content: flex-start;
  width: 100%;
  background: rgba(227, 247, 255, 0.16);
  color: #f7fcff;
  border-color: rgba(255, 255, 255, 0.42);
}

.model-save-menu button:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.28);
  border-color: #ffffff;
}

.model-save-menu button:disabled {
  opacity: 0.46;
}

.save-tree-parent[aria-expanded="true"] {
  background: rgba(255, 255, 255, 0.32);
  border-color: #ffffff;
}

.save-tree-branch {
  position: absolute;
  left: calc(100% - 6px);
  top: 6px;
  display: flex;
  align-items: stretch;
  gap: 4px;
  min-width: max-content;
  margin-left: 0;
  padding: 6px;
  border: 1px solid rgba(127, 214, 255, 0.55);
  border-radius: 8px;
  background: rgba(36, 122, 173, 0.98);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.34);
}

.save-tree-branch[hidden] {
  display: none;
}

.save-tree-branch button {
  min-height: 30px;
  width: auto;
  white-space: nowrap;
  padding-inline: 12px;
  background: rgba(12, 31, 42, 0.28);
}

.save-tree-branch button::before {
  content: none;
}

.history-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.history-actions button {
  min-height: 30px;
  padding: 0 10px;
  border-color: var(--line);
  background: var(--panel-2);
  color: var(--text);
  font-size: 12px;
}

.history-actions button:disabled {
  opacity: 0.42;
}

.view-toggle {
  display: inline-grid;
  grid-template-columns: repeat(2, 54px);
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #121619;
}

.view-toggle button {
  min-height: 30px;
  border-radius: 4px;
  background: transparent;
  color: var(--muted);
}

.view-toggle button.active {
  background: var(--accent);
  color: #061412;
}

.legend {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
}

.legend span {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: var(--accent);
}

.canvas-wrap {
  position: relative;
  min-height: 0;
  padding: 12px;
  overflow: hidden;
}

.mask-edit-toolbar {
  position: absolute;
  left: 22px;
  top: 22px;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: calc(100% - 44px);
  padding: 6px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.86);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
}

.mask-edit-toolbar button,
.mask-edit-toolbar button:nth-child(2),
.mask-edit-toolbar button:nth-child(3),
.mask-edit-toolbar button:nth-child(4),
.mask-edit-toolbar button:nth-child(5),
.mask-edit-toolbar button:nth-child(6),
.mask-edit-toolbar button:nth-child(7),
.mask-edit-toolbar button:nth-child(8) {
  min-height: 30px;
  padding: 0 9px;
  background: var(--panel-2);
  border-color: var(--line);
  color: var(--text);
  font-size: 12px;
}

.mask-menu-list {
  position: absolute;
  left: 0;
  top: calc(100% + 6px);
  display: grid;
  gap: 4px;
  min-width: 220px;
  padding: 6px;
  border: 1px solid rgba(127, 214, 255, 0.55);
  border-radius: 8px;
  background: rgba(36, 122, 173, 0.97);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.34);
}

.mask-menu-list[hidden] {
  display: none;
}

.mask-menu-list button,
.mask-edit-toolbar .mask-menu-list button:nth-child(2),
.mask-edit-toolbar .mask-menu-list button:nth-child(3),
.mask-edit-toolbar .mask-menu-list button:nth-child(4),
.mask-edit-toolbar .mask-menu-list button:nth-child(5),
.mask-edit-toolbar .mask-menu-list button:nth-child(6) {
  justify-content: flex-start;
  width: 100%;
  background: rgba(227, 247, 255, 0.16);
  color: #f7fcff;
  border-color: rgba(255, 255, 255, 0.42);
}

.mask-menu-list button:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.28);
  border-color: #ffffff;
}

.mask-edit-toolbar button.active {
  background: var(--accent);
  border-color: transparent;
  color: #061412;
}

.measure-overlay {
  position: absolute;
  inset: 12px;
  z-index: 4;
  pointer-events: none;
  border-radius: 6px;
  background: rgba(8, 11, 12, 0.18);
}

.measure-overlay-prompt {
  position: absolute;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  max-width: calc(100% - 40px);
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.9);
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.measure-panel {
  position: absolute;
  left: 50%;
  top: 58px;
  transform: translateX(-50%);
  pointer-events: auto;
  display: flex;
  align-items: end;
  gap: 8px;
  max-width: calc(100% - 40px);
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.94);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.32);
}

.measure-panel label {
  display: grid;
  grid-template-columns: auto 76px 64px auto;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.measure-panel .measure-all-row {
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.measure-panel .measure-all-row input {
  width: auto;
  height: auto;
}

.measure-panel input,
.measure-panel select {
  height: 32px;
}

.measure-panel button {
  min-height: 32px;
  padding: 0 12px;
}

.transparentize-overlay {
  position: absolute;
  inset: 12px;
  z-index: 4;
  pointer-events: none;
  border-radius: 6px;
  background: rgba(8, 11, 12, 0.18);
}

.transparentize-overlay-prompt {
  position: absolute;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  max-width: calc(100% - 40px);
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.9);
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.transparentize-panel {
  position: absolute;
  left: 50%;
  top: 58px;
  transform: translateX(-50%);
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: calc(100% - 40px);
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.94);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.32);
}

.transparentize-panel label {
  display: grid;
  grid-template-columns: auto 140px 36px;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.transparentize-panel button {
  min-height: 32px;
  padding: 0 12px;
}

.strap-hole-menu {
  position: absolute;
  z-index: 7;
  width: 210px;
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.96);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.34);
}

.strap-hole-menu label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  color: var(--text);
}

.strap-hole-menu input {
  min-width: 0;
}

.strap-hole-menu output {
  min-width: 44px;
  text-align: right;
  font-size: 12px;
}

.strap-hole-menu button,
.strap-hole-menu button:nth-child(2) {
  min-height: 32px;
  background: var(--panel-2);
  border-color: var(--line);
  color: var(--text);
}

.mask-edit-toolbar[hidden],
.measure-overlay[hidden],
.measure-panel[hidden],
.strap-hole-menu[hidden] {
  display: none !important;
}

.preview-canvas {
  width: 100%;
  height: 100%;
  min-height: 0;
  display: none;
  border-radius: 6px;
  background:
    linear-gradient(45deg, #20262a 25%, transparent 25%),
    linear-gradient(-45deg, #20262a 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #20262a 75%),
    linear-gradient(-45deg, transparent 75%, #20262a 75%),
    #161a1d;
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}

.preview-canvas.active {
  display: block;
  cursor: crosshair;
}

#preview3dCanvas {
  background: #121619;
  cursor: grab;
}

#preview3dCanvas:active {
  cursor: grabbing;
}

.preview-gizmo-canvas {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: 100%;
  height: 100%;
  border-radius: 6px;
  touch-action: none;
  cursor: grab;
}

.preview-gizmo-canvas.dragging {
  cursor: grabbing;
}

.preview-gizmo-canvas[hidden] {
  display: none;
}

.preview-light-toggle {
  position: absolute;
  left: 22px;
  top: 22px;
  z-index: 3;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.86);
  color: var(--text);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
}

.preview-light-toggle.active {
  background: var(--accent);
  color: #061412;
}

.view-reset-btn {
  position: absolute;
  right: 22px;
  top: 22px;
  z-index: 3;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.86);
  color: var(--text);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
}

.preview-texture-toggle {
  position: absolute;
  right: 22px;
  top: 64px;
  z-index: 3;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.86);
  color: var(--text);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
}

.preview-outline-toggle {
  position: absolute;
  right: 22px;
  top: 106px;
  z-index: 3;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.86);
  color: var(--text);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.24);
}

.view-reset-btn:hover,
.preview-texture-toggle:hover,
.preview-outline-toggle:hover {
  border-color: rgba(91, 230, 206, 0.55);
  color: #ffffff;
}

.preview-texture-toggle.active,
.preview-outline-toggle.active {
  background: rgba(91, 230, 206, 0.92);
  color: #061412;
}

.view-reset-btn[hidden],
.preview-texture-toggle[hidden],
.preview-outline-toggle[hidden] {
  display: none;
}

.gif-overlay {
  position: absolute;
  inset: 12px;
  z-index: 5;
  display: grid;
  align-items: start;
  justify-items: center;
  background: rgba(0, 0, 0, 0.38);
  overflow: hidden;
}

.gif-overlay[hidden] {
  display: none;
}

.polygon-overlay {
  position: absolute;
  inset: 12px;
  z-index: 6;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(0, 0, 0, 0.42);
}

.polygon-overlay[hidden] {
  display: none;
}

.polygon-dialog {
  width: min(440px, calc(100% - 24px));
  display: grid;
  gap: 12px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.96);
  color: var(--text);
  box-shadow: 0 18px 54px rgba(0, 0, 0, 0.44);
}

.polygon-head,
.polygon-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.polygon-body {
  display: grid;
  gap: 10px;
}

.polygon-body label {
  display: grid;
  gap: 6px;
}

.polygon-body input {
  width: 120px;
}

.polygon-estimate {
  font-size: 13px;
  font-weight: 700;
}

.polygon-note {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.back-image-adjust-overlay {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.48);
}

.back-image-adjust-overlay[hidden] {
  display: none;
}

.back-image-adjust-dialog {
  width: min(880px, calc(100vw - 48px));
  max-height: calc(100vh - 48px);
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 12px;
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.97);
  color: var(--text);
  box-shadow: 0 22px 64px rgba(0, 0, 0, 0.48);
}

.back-image-adjust-head,
.back-image-adjust-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.back-image-adjust-head button,
.back-image-adjust-actions button {
  min-height: 32px;
  padding: 0 12px;
}

#backImageAdjustCanvas {
  width: 100%;
  max-height: min(62vh, 560px);
  min-height: 260px;
  display: block;
  border: 1px solid var(--line);
  border-radius: 6px;
  background:
    linear-gradient(45deg, #20262a 25%, transparent 25%),
    linear-gradient(-45deg, #20262a 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #20262a 75%),
    linear-gradient(-45deg, transparent 75%, #20262a 75%),
    #111518;
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
  cursor: grab;
  touch-action: none;
}

#backImageAdjustCanvas:active {
  cursor: grabbing;
}

.back-image-adjust-offset {
  font-size: 13px;
}

.back-image-adjust-actions {
  display: flex;
  gap: 8px;
}

.back-image-adjust-status {
  min-height: 18px;
  color: var(--muted);
  font-size: 12px;
}

.gif-menu {
  width: min(360px, calc(100% - 28px));
  max-height: calc(100% - 24px);
  display: grid;
  gap: 12px;
  padding: 14px;
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.96);
  color: var(--text);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.44);
}

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

.gif-menu-head button,
.gif-menu-head button:nth-child(2) {
  min-height: 30px;
  padding: 0 10px;
  border-color: var(--line);
  background: var(--panel-2);
  color: var(--text);
}

.gif-video-note {
  padding: 8px 10px;
  border: 1px solid rgba(91, 230, 206, 0.22);
  border-radius: 6px;
  background: rgba(91, 230, 206, 0.08);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.gif-menu > button {
  min-height: 36px;
}

.gif-status {
  min-height: 20px;
  color: var(--muted);
  font-size: 12px;
}

.gif-text-options {
  display: grid;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(8, 11, 13, 0.34);
}

.gif-section-title {
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.gif-preview-image {
  width: 100%;
  max-height: 140px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 6px;
  background:
    linear-gradient(45deg, #20262a 25%, transparent 25%),
    linear-gradient(-45deg, #20262a 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #20262a 75%),
    linear-gradient(-45deg, transparent 75%, #20262a 75%),
    #161a1d;
  background-size: 18px 18px;
  background-position: 0 0, 0 9px, 9px -9px, -9px 0;
}

.gif-trace-panel {
  display: grid;
  gap: 8px;
}

.gif-trace-panel[hidden] {
  display: none;
}

.gif-trace-text {
  max-height: 54px;
  overflow: auto;
  white-space: pre-wrap;
  font-family: Consolas, "Courier New", monospace;
  font-size: 11px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px;
  background: rgba(8, 11, 13, 0.55);
}

.gif-trace-image {
  width: 100%;
  max-height: 92px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #121619;
}

.gif-menu-actions {
  position: sticky;
  bottom: -14px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  margin: 0 -14px -14px;
  padding: 10px 14px 14px;
  border-top: 1px solid var(--line);
  background: rgba(18, 22, 25, 0.98);
}

.gif-menu-actions button {
  min-height: 36px;
}

.gif-menu-actions button:nth-child(3) {
  background: var(--accent-2);
  color: #191103;
}

.preview-light-panel {
  position: absolute;
  left: 22px;
  top: 64px;
  z-index: 3;
  width: min(180px, calc(100% - 32px));
  display: grid;
  gap: 6px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.9);
  color: var(--text);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(8px);
}

.preview-scene-panel {
  position: absolute;
  left: 16px;
  bottom: 16px;
  z-index: 3;
  width: min(180px, calc(100% - 32px));
  display: grid;
  gap: 6px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 6px;
  background: rgba(18, 22, 25, 0.9);
  color: var(--text);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(8px);
}

.preview-light-panel label,
.preview-scene-panel label {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 36px;
  align-items: center;
  gap: 5px;
  font-size: 10px;
}

.preview-scene-panel input[type="color"] {
  grid-column: 2 / 4;
  width: 100%;
  height: 28px;
}

.preview-scene-panel input[type="number"] {
  width: 100%;
  min-width: 0;
  height: 28px;
}

.preview-light-panel output,
.preview-scene-panel output {
  font-size: 10px;
}

.preview-light-panel[hidden],
.preview-scene-panel[hidden] {
  display: none;
}

/* Desktop production skin pass: quieter DCC-style surfaces and controls. */
body {
  background: var(--bg);
  letter-spacing: 0;
}

.app {
  gap: 10px;
  padding: 10px;
}

.panel,
.settings-panel,
.settings-group,
.dropzone,
.source-tabs,
.preview-layer-panel,
.preview-light-panel,
.preview-scene-panel,
.gif-menu,
.polygon-menu,
.back-image-adjust-window {
  border-radius: 4px;
  border-color: var(--line-soft);
  box-shadow: none;
}

.panel,
.settings-panel,
.settings-group {
  background: var(--panel);
}

.controls {
  padding: 12px;
}

.controls-scroll {
  gap: 12px;
}

h1 {
  font-size: 22px;
  font-weight: 650;
}

.brand p {
  margin-top: 5px;
  color: #9fa6a3;
  font-size: 12px;
}

.settings-panel {
  padding: 10px;
  background: #202427;
}

.settings-group summary {
  min-height: 34px;
  padding: 0 10px;
  background: #24292c;
  color: #ddd8cf;
  font-size: 12px;
  font-weight: 650;
}

.settings-group[open] summary {
  margin-bottom: 10px;
  border-bottom-color: var(--line-soft);
}

.settings-group .grid {
  padding: 0 10px;
}

.panel-title {
  color: #ddd8cf;
  font-size: 12px;
  letter-spacing: 0;
}

input[type="number"],
input[type="text"],
select,
textarea {
  border-color: #3a4245;
  background: #171a1c;
  color: var(--text);
  border-radius: 4px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.025);
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus,
textarea:focus {
  outline: 1px solid rgba(240, 138, 36, 0.72);
  outline-offset: 1px;
  border-color: rgba(240, 138, 36, 0.76);
}

button,
button:nth-child(2),
button:nth-child(3),
button:nth-child(4),
.source-tabs button,
.view-toggle button,
.preview-actions button,
.history-actions button,
.mask-edit-toolbar button,
.font-row button,
.color-row button,
.back-image-row button,
.shape-texture-controls button,
.preview-layer-panel .layer-actions button,
.gif-menu-head button,
.gif-menu-actions button,
.model-save-menu button,
.source-add-menu button,
.merge-mode-menu button {
  border-color: #3a4245;
  background: var(--button);
  color: #ddd8cf;
  border-radius: 4px;
  font-weight: 600;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
}

button:hover:not(:disabled),
.preview-actions button:hover:not(:disabled),
.history-actions button:hover:not(:disabled),
.mask-edit-toolbar button:hover:not(:disabled),
.font-row button:hover:not(:disabled),
.color-row button:hover:not(:disabled),
.model-save-menu button:hover:not(:disabled),
.source-add-menu button:hover:not(:disabled),
.merge-mode-menu button:hover:not(:disabled) {
  background: var(--button-hover);
  border-color: #4a5357;
  color: #f1ece4;
}

.source-add-row > button,
.rebuild-footer button,
.gif-menu-actions button:nth-child(3) {
  border-color: rgba(240, 138, 36, 0.55);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0)),
    #e9791e;
  color: #18130a;
}

.source-add-row > button:hover:not(:disabled),
.rebuild-footer button:hover:not(:disabled),
.gif-menu-actions button:nth-child(3):hover:not(:disabled) {
  background: #f08a24;
  color: #151008;
}

.source-tabs button.active,
.view-toggle button.active,
.mask-edit-toolbar button.active,
.measure-row button.active,
.preview-texture-toggle.active,
.preview-outline-toggle.active {
  border-color: rgba(240, 138, 36, 0.68);
  background: #f08a24;
  color: #18130a;
}

.dropzone {
  border-style: solid;
  background: #1c2023;
}

.dropzone:hover,
.dropzone.drag {
  border-color: rgba(240, 138, 36, 0.78);
  background: #202528;
}

.source-add-menu,
.model-save-menu {
  border-color: #516066;
  background: rgba(36, 43, 47, 0.98);
  border-radius: 4px;
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.36);
}

.source-add-menu button[aria-expanded="true"],
.shape-stock-texture-list button.active {
  border-color: rgba(240, 138, 36, 0.82);
  background: rgba(240, 138, 36, 0.18);
}

.shape-add-tree {
  border-color: #516066;
  background: rgba(36, 43, 47, 0.98);
  border-radius: 4px;
}

.save-tree-branch {
  border-color: #516066;
  background: rgba(36, 43, 47, 0.98);
  border-radius: 4px;
}

.preview-head {
  padding: 10px 12px;
  background: #202428;
  border-bottom-color: var(--line-soft);
}

.preview-actions {
  gap: 6px;
}

.preview-actions button,
.history-actions button,
.view-toggle button {
  min-height: 28px;
  padding: 0 9px;
  font-size: 11px;
}

.view-toggle {
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  background: #181b1e;
}

.preview-canvas {
  background-color: #171a1c;
}

#preview3dCanvas {
  background: #171a1c;
}

.preview-light-toggle,
.view-reset-btn,
.preview-texture-toggle,
.preview-outline-toggle {
  right: 14px;
  min-width: 92px;
  min-height: 28px;
  padding: 0 8px;
  border-color: rgba(218, 214, 205, 0.16);
  border-radius: 4px;
  background: rgba(31, 35, 38, 0.82);
  color: #ddd8cf;
  font-size: 11px;
  font-weight: 600;
  box-shadow: none;
  backdrop-filter: blur(7px);
}

.view-reset-btn {
  top: 14px;
}

.preview-texture-toggle {
  top: 46px;
}

.preview-outline-toggle {
  top: 78px;
}

.preview-light-toggle {
  left: 14px;
  right: auto;
  top: 14px;
  min-width: 118px;
}

.preview-light-panel {
  left: 14px;
  top: 50px;
}

.preview-light-panel,
.preview-scene-panel,
.preview-layer-panel {
  background: rgba(31, 35, 38, 0.9);
  border-color: rgba(218, 214, 205, 0.13);
}

.layer-list {
  background: #181b1e;
  border-color: var(--line-soft);
}

.layer-item {
  border-bottom-color: #262c30;
  background: #1f2427;
}

.layer-item.active,
.layer-item.selected {
  background: #313b41;
}

.layer-item.selected:not(.active) {
  background: #2a3338;
}

.layer-thumb {
  border-color: #4a5357;
  background-color: #151719;
}

.layer-context-menu,
.strap-hole-menu {
  border-color: #516066;
  border-radius: 4px;
  background: rgba(36, 43, 47, 0.98);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.36);
}

.depth-feature-row label {
  color: #ffad55;
}

.basic-panel #depth {
  border-color: #f08a24;
  background: #ffc06a;
  color: #171109;
}

/* Modern studio skin v2: stronger visual identity without runtime-heavy effects. */
body {
  background:
    linear-gradient(180deg, #101214 0%, #17191b 42%, #121416 100%);
}

.app {
  gap: 8px;
  padding: 8px;
}

.panel {
  border-color: rgba(238, 232, 218, 0.08);
  background: #171a1d;
}

.controls {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0) 120px),
    #171a1d;
}

.controls-scroll {
  padding-right: 8px;
}

.controls-scroll::-webkit-scrollbar,
.layer-list::-webkit-scrollbar,
.preview-layer-panel::-webkit-scrollbar {
  width: 8px;
}

.controls-scroll::-webkit-scrollbar-track,
.layer-list::-webkit-scrollbar-track,
.preview-layer-panel::-webkit-scrollbar-track {
  background: #111315;
}

.controls-scroll::-webkit-scrollbar-thumb,
.layer-list::-webkit-scrollbar-thumb,
.preview-layer-panel::-webkit-scrollbar-thumb {
  border: 2px solid #111315;
  border-radius: 8px;
  background: #5b615f;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 2px 2px 8px;
}

.brand-icon {
  width: 56px;
  height: 56px;
  flex: 0 0 56px;
  object-fit: contain;
}

.brand h1 {
  display: block;
  color: #f0e8d8;
  font-size: 36px;
  font-weight: 780;
  line-height: 0.95;
  letter-spacing: 0;
  margin: 0;
}

.brand-accent {
  color: var(--accent);
}

.brand p {
  max-width: 34em;
  color: #9ba19e;
}

.source-add-row > button {
  min-height: 42px;
  border: 0;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0) 42%),
    linear-gradient(90deg, #ff9d37, #d46a19);
  color: #14110c;
  font-size: 13px;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.18) inset, 0 10px 18px rgba(0, 0, 0, 0.18);
}

.settings-panel,
.settings-group {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(238, 232, 218, 0.075);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0) 70px),
    #1c2023;
}

.settings-panel::before,
.settings-group::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: rgba(240, 138, 36, 0.55);
}

.settings-group summary {
  min-height: 36px;
  padding-left: 14px;
  background: rgba(255, 255, 255, 0.025);
  color: #efe7d8;
  font-size: 12px;
}

.settings-group[open] summary {
  background: rgba(255, 255, 255, 0.045);
}

.panel-title {
  padding-left: 6px;
  color: #efe7d8;
}

label,
.basic-panel label,
.preview-layer-panel .layer-panel label {
  color: #bfc4bf;
}

input[type="number"],
input[type="text"],
select,
textarea {
  height: 36px;
  border-color: rgba(238, 232, 218, 0.105);
  background: #101214;
  color: #f0e8d8;
}

button,
button:nth-child(2),
button:nth-child(3),
button:nth-child(4),
.preview-actions button,
.history-actions button,
.mask-edit-toolbar button,
.font-row button,
.color-row button,
.back-image-row button,
.shape-texture-controls button,
.preview-layer-panel .layer-actions button {
  min-height: 34px;
  border-color: rgba(238, 232, 218, 0.1);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0)),
    #24292d;
  color: #dcd6ca;
}

button:hover:not(:disabled),
.preview-actions button:hover:not(:disabled),
.history-actions button:hover:not(:disabled),
.mask-edit-toolbar button:hover:not(:disabled) {
  border-color: rgba(240, 138, 36, 0.42);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0)),
    #2b3135;
}

.source-tabs,
.view-toggle {
  border-color: rgba(238, 232, 218, 0.08);
  background: #101214;
}

.source-tabs button.active,
.view-toggle button.active,
.mask-edit-toolbar button.active,
.measure-row button.active,
.preview-texture-toggle.active,
.preview-outline-toggle.active {
  border-color: rgba(240, 138, 36, 0.48);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0)),
    #f08a24;
  color: #15110a;
}

.dropzone {
  border-color: rgba(238, 232, 218, 0.085);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.035), rgba(240, 138, 36, 0.055)),
    #181c1f;
}

.drop-title {
  color: #efe7d8;
}

.basic-panel #depth {
  height: 42px;
  border-color: rgba(240, 138, 36, 0.86);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.32), rgba(255, 255, 255, 0)),
    #ffc06a;
  color: #15100a;
  box-shadow: 0 0 0 1px rgba(240, 138, 36, 0.2), 0 8px 16px rgba(0, 0, 0, 0.18);
}

.preview {
  border-color: rgba(238, 232, 218, 0.08);
  background: #141719;
}

.preview-head {
  min-height: 58px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0)),
    #191d20;
}

.preview-actions button,
.history-actions button,
.view-toggle button {
  min-height: 30px;
  border-radius: 4px;
}

.preview-canvas {
  background:
    linear-gradient(45deg, #171b1e 25%, transparent 25%),
    linear-gradient(-45deg, #171b1e 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #171b1e 75%),
    linear-gradient(-45deg, transparent 75%, #171b1e 75%),
    #111416;
  background-size: 24px 24px;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}

.preview-light-toggle,
.view-reset-btn,
.preview-texture-toggle,
.preview-outline-toggle {
  border-color: rgba(238, 232, 218, 0.14);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0)),
    rgba(19, 22, 24, 0.84);
  color: #e7dfd1;
}

.preview-light-toggle.active {
  border-color: rgba(240, 138, 36, 0.6);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0)),
    #f08a24;
  color: #091211;
}

.preview-layer-panel,
.preview-scene-panel,
.preview-light-panel {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.045), rgba(255, 255, 255, 0)),
    rgba(20, 23, 25, 0.94);
  border-color: rgba(238, 232, 218, 0.11);
}

.preview-layer-panel summary {
  background: rgba(20, 23, 25, 0.96);
  color: #efe7d8;
}

.layer-list {
  background: #101214;
}

.layer-item {
  background: #1b2023;
}

.layer-item.active,
.layer-item.selected {
  background:
    linear-gradient(90deg, rgba(240, 138, 36, 0.25), rgba(255, 255, 255, 0.035)),
    #273036;
}

.layer-item.active::before,
.layer-item.selected::before {
  background: #f08a24;
}

.layer-thumb {
  border-radius: 3px;
  background-color: #0f1113;
}

.ai-panel {
  border-top-color: rgba(238, 232, 218, 0.08);
}

.ai-chat-log {
  background: #111416;
}

/* Interaction fix: keep the left property rail scrollable and the docked layer panel clickable. */
.controls > .controls-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: scroll;
  scrollbar-gutter: stable;
}

.controls-scroll > * {
  flex: 0 0 auto;
}

.canvas-wrap > .preview-layer-panel {
  position: absolute !important;
  left: auto !important;
  right: 16px !important;
  top: auto !important;
  bottom: 16px !important;
  z-index: 4;
  min-height: 38px;
  max-height: min(76vh, calc(100% - 32px));
}

.canvas-wrap > .preview-layer-panel:not([open]) {
  width: min(220px, calc(100% - 32px));
  overflow: visible;
}

.canvas-wrap > .preview-layer-panel[open] {
  overflow: auto;
}

.merge-mode-menu,
.layer-context-menu {
  position: fixed !important;
  z-index: 1000;
  max-width: calc(100vw - 16px);
}

.merge-mode-menu {
  width: max-content;
}

.layer-context-menu {
  width: max-content;
}

.source-add-menu,
.model-save-menu,
.save-tree-branch {
  border-color: rgba(127, 214, 255, 0.55) !important;
  border-radius: 8px;
  background: rgba(36, 122, 173, 0.97) !important;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.34);
}

.source-add-menu button,
.model-save-menu button,
.save-tree-branch button {
  border-color: rgba(255, 255, 255, 0.42) !important;
  background: rgba(227, 247, 255, 0.16) !important;
  color: #f7fcff !important;
}

.source-add-menu button:hover:not(:disabled),
.model-save-menu button:hover:not(:disabled),
.save-tree-branch button:hover:not(:disabled),
.source-add-menu button[aria-expanded="true"],
.save-tree-parent[aria-expanded="true"] {
  border-color: #ffffff !important;
  background: rgba(255, 255, 255, 0.28) !important;
  color: #ffffff !important;
}

.canvas-wrap > .preview-layer-panel summary {
  position: sticky;
  top: 0;
  z-index: 5;
  min-height: 38px;
  pointer-events: auto;
}

@media (max-width: 860px) {
  body {
    overflow: auto;
  }

  .app {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 100vh;
    overflow: visible;
  }

  .controls {
    max-height: none;
    overflow: visible;
  }

  .two-col {
    grid-template-columns: 1fr;
  }

  .compact-row {
    grid-template-columns: 1fr;
  }

  .compact-row-2 {
    grid-template-columns: 1fr;
  }

  .basic-panel .compact-row,
  .basic-panel .compact-row-2 {
    grid-template-columns: 1fr;
  }


  .font-row {
    grid-template-columns: 1fr;
  }

  .text-style-row {
    grid-template-columns: 1fr;
  }

  .text-style-row label {
    grid-template-columns: 74px minmax(0, 1fr);
  }

  .preview-head,
  .preview-tools {
    align-items: flex-start;
    flex-direction: column;
  }

  .preview-actions {
    width: 100%;
  }

  .preview-layer-panel {
    width: min(260px, calc(100% - 32px));
    max-height: calc(100% - 32px);
  }

  .preview-light-toggle {
    left: 16px;
    top: 16px;
  }
}

/* Web lite edition: hide desktop-only/product-only surfaces from public UI. */
body.web-lite .ai-panel,
body.web-lite .project-save-wrap,
body.web-lite #projectFileInput,
body.web-lite #downloadModelBtn,
body.web-lite #downloadModelMenu,
body.web-lite .history-actions,
body.web-lite .gloss-group,
body.web-lite .preset-row,
body.web-lite #backImageControls,
body.web-lite #backOffsetControls,
body.web-lite #backImageAdjustOverlay,
body.web-lite #loadFontsBtn,
body.web-lite #textAnimationOptions,
body.web-lite #saveMaskPngBtn,
body.web-lite #saveBackGuidePngBtn {
  display: none !important;
}

.web-edition-label {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.58em;
  font-weight: 400;
  line-height: 1.15;
}