/* Reset & Root */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-root: #141414;
  --bg-sidebar: #1c1c1c;
  --bg-card-0: #252525;
  --bg-card-1: #2e2e2e;
  --bg-card-2: #373737;
  --bg-input: #1a1a1a;
  --border: rgba(255, 255, 255, 0.07);
  --text: #cccccc;
  --text-muted: #666666;
  --text-label: #888888;
  --accent: #4d9fff;
  --danger: #e05252;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "Fira Code", Consolas, monospace;
  --radius: 6px;
  --radius-sm: 4px;
}

html,
body {
  height: 100%;
  overflow: hidden;
  background: var(--bg-root);
  color: var(--text);
  font-family: var(--font);
  font-size: 12px;
}

/* Layout */
#app {
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

#left-panel {
  flex: 0 0 65%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

#viewport {
  flex: 1;
  position: relative;
  background: #0e0e0e;
  overflow: hidden;
  min-height: 0;
}
#viewport canvas {
  width: 100%;
  height: 100%;
  display: block;
}

#sidebar {
  flex: 0 0 35%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-sidebar);
  border-left: 1px solid var(--border);
  min-width: 300px;
}

/* Tabs */
#tabs {
  display: flex;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg-root);
}

.tab-button {
  flex: 1;
  padding: 10px 8px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    color 0.15s,
    border-color 0.15s;
}
.tab-button:hover {
  color: var(--text);
}
.tab-button.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

#tab-content {
  flex: 1;
  overflow: hidden;
  position: relative;
}

.tab-panel {
  display: none;
  position: absolute;
  inset: 0;
  overflow-y: auto;
  padding: 10px;
  gap: 8px;
  flex-direction: column;
}
.tab-panel.active {
  display: flex;
}

.placeholder-text {
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
  padding: 32px 16px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Emitter list */
#emitter-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Emitter Card */
.emitter-card {
  background: var(--bg-card-0);
  border: 1px solid rgba(210, 150, 50, 0.45);
  border-radius: var(--radius);
  overflow: hidden;
}

.emitter-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  border-bottom: 1px solid rgba(210, 150, 50, 0.35);
  background: rgba(210, 150, 50, 0.12);
}

.emitter-name {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 12px;
  font-weight: 600;
  outline: none;
  min-width: 0;
}
.emitter-name:focus {
  color: #fff;
}

.emitter-controls {
  display: flex;
  align-items: center;
  gap: 4px;
}

.rate-group {
  display: flex;
  align-items: center;
  gap: 4px;
}
.rate-group label {
  color: var(--text-muted);
  font-size: 10px;
  white-space: nowrap;
}
.rate-input {
  width: 52px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 11px;
  padding: 3px 5px;
  text-align: right;
}
.rate-input:focus {
  outline: none;
  border-color: var(--accent);
}

/* Section inside emitter card */
.card-section {
  padding: 8px 10px;
  border-top: 1px solid var(--border);
}

.card-section--spawn {
  border-left: 4px solid rgba(70, 130, 210, 0.45);
  background: rgba(70, 130, 210, 0.04);
}
.card-section--behavior {
  border-left: 4px solid rgba(70, 185, 110, 0.45);
  background: rgba(70, 185, 110, 0.04);
}
.card-section--material {
  border-left: 4px solid rgba(160, 90, 210, 0.45);
  background: rgba(160, 90, 210, 0.04);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
}
.section-title {
  flex: 1;
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.section-title--small {
  font-size: 9px;
  letter-spacing: 0.06em;
}

/* Module / Node Cards */
.module-card {
  background: var(--bg-card-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 5px;
  overflow: hidden;
}
.module-card:last-child {
  margin-bottom: 0;
}

.node-card {
  background: var(--bg-card-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 4px;
  overflow: hidden;
}
.node-card:last-child {
  margin-bottom: 0;
}

.module-card-header {
  display: flex;
  align-items: center;
  padding: 5px 8px;
  border-bottom: 1px solid var(--border);
  gap: 4px;
}
.module-card-header:only-child {
  border-bottom: none;
}

.module-title {
  flex: 1;
  color: var(--text);
  font-size: 11px;
  font-weight: 500;
}

.node-section {
  margin-top: 6px;
}
.node-section:first-child {
  margin-top: 0;
}

/* Params Grid */
.params-grid {
  padding: 6px 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.param-row {
  display: grid;
  grid-template-columns: 115px 1fr;
  align-items: center;
  gap: 6px;
  min-height: 22px;
}

.param-label {
  color: var(--text-label);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Inputs */
.param-input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 11px;
  padding: 3px 6px;
  font-family: var(--font-mono);
}
.param-input:focus {
  outline: none;
  border-color: var(--accent);
}
.param-input--half {
  width: calc(50% - 2px);
}
.param-input--third {
  width: calc(33.33% - 3px);
}
.param-input--alpha {
  width: 56px;
}

.param-select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 11px;
  padding: 3px 6px;
  cursor: pointer;
}
.param-select:focus {
  outline: none;
  border-color: var(--accent);
}

.range-wrap {
  display: flex;
  gap: 4px;
}
.vec3-wrap {
  display: flex;
  gap: 3px;
}

.bool-wrap {
  display: flex;
  align-items: center;
}
.bool-wrap input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
}

.color-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
}
.color-wrap input[type="color"] {
  width: 28px;
  height: 22px;
  padding: 1px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  cursor: pointer;
}
.color-alpha-slider {
  flex: 1;
  min-width: 0;
  height: 3px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* Colors / Ranges Lists */
.colors-list,
.ranges-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.color-row,
.range-row {
  display: flex;
  align-items: center;
  gap: 4px;
}
.color-row .color-wrap {
  flex: 1;
}
.range-row .range-wrap {
  flex: 1;
}

.asset-placeholder {
  color: var(--text-muted);
  font-size: 11px;
  font-style: italic;
}

/* Buttons */
button {
  font-family: var(--font);
  cursor: pointer;
  border: none;
}

.button-icon {
  background: transparent;
  color: var(--text-muted);
  padding: 2px 5px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  line-height: 1;
  transition:
    color 0.1s,
    background 0.1s;
}
.button-icon:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
}
.button-icon.button-danger:hover {
  color: var(--danger);
  background: rgba(224, 82, 82, 0.12);
}

.button-add {
  background: transparent;
  color: var(--accent);
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(77, 159, 255, 0.3);
  transition:
    background 0.1s,
    border-color 0.1s;
  white-space: nowrap;
}
.button-add:hover {
  background: rgba(77, 159, 255, 0.1);
  border-color: var(--accent);
}
.button-add--small {
  font-size: 9px;
  padding: 1px 5px;
}

.button-play {
  background: rgba(82, 192, 82, 0.15);
  color: var(--success);
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(82, 192, 82, 0.3);
  transition: background 0.1s;
}
.button-play:hover {
  background: rgba(82, 192, 82, 0.25);
}
.button-play.playing {
  background: rgba(224, 82, 82, 0.15);
  color: var(--danger);
  border-color: rgba(224, 82, 82, 0.3);
}
.button-play.playing:hover {
  background: rgba(224, 82, 82, 0.25);
}

.button-danger-plain {
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  padding: 1px 5px;
  border-radius: var(--radius-sm);
  line-height: 1;
  transition:
    color 0.1s,
    background 0.1s;
}
.button-danger-plain:hover {
  color: var(--danger);
  background: rgba(224, 82, 82, 0.12);
}

.button-primary {
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 7px 12px;
  border-radius: var(--radius);
  transition: opacity 0.1s;
}
.button-primary:hover {
  opacity: 0.85;
}
.button-full {
  width: 100%;
  margin-top: 4px;
  flex-shrink: 0;
}

/* Add emitter row */
#add-emitter-row {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}
#add-emitter-row .param-select {
  flex: 1;
}
#add-emitter-row .button-primary {
  flex: 0 0 auto;
  white-space: nowrap;
}

/* Dropdown */
.dropdown-menu {
  background: #2a2a2a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  min-width: 180px;
}
.dropdown-item {
  display: block;
  width: 100%;
  padding: 7px 12px;
  background: transparent;
  color: var(--text);
  font-size: 11px;
  text-align: left;
  border: none;
  cursor: pointer;
  transition: background 0.1s;
}
.dropdown-item:hover {
  background: rgba(77, 159, 255, 0.15);
  color: #fff;
}

/* Material type select */
.material-type-select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 10px;
  padding: 2px 5px;
  cursor: pointer;
}
.material-type-select:focus {
  outline: none;
  border-color: var(--accent);
}

/* Viewport overlay controls */
#viewport-controls {
  position: absolute;
  top: 10px;
  left: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 10;
}

.viewport-button {
  width: 28px;
  height: 28px;
  padding: 0;
  background: rgba(20, 20, 20, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 5px;
  color: rgba(255, 255, 255, 0.3);
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition:
    color 0.15s,
    background 0.15s,
    border-color 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.viewport-button:hover {
  background: rgba(40, 40, 40, 0.8);
  color: rgba(255, 255, 255, 0.6);
}
.viewport-button.active {
  color: #e8c86a;
  border-color: rgba(232, 200, 106, 0.4);
  background: rgba(20, 20, 20, 0.7);
}
.viewport-button--reset {
  width: auto;
  padding: 0 8px;
  font-size: 10px;
  letter-spacing: 0.04em;
  margin-left: 4px;
}

.viewport-color-pick {
  width: 28px;
  height: 28px;
  padding: 2px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 5px;
  background: rgba(20, 20, 20, 0.6);
  cursor: pointer;
  flex-shrink: 0;
}
.viewport-color-pick::-webkit-color-swatch-wrapper {
  padding: 0;
  border-radius: 2px;
}
.viewport-color-pick::-webkit-color-swatch {
  border: none;
  border-radius: 2px;
}
.viewport-color-pick::-moz-color-swatch {
  border: none;
  border-radius: 2px;
}

/* Slider field */
.slider-wrap {
  display: flex;
  align-items: center;
  gap: 5px;
}
.slider-wrap input[type="range"] {
  flex: 1;
  min-width: 0;
  height: 3px;
  accent-color: var(--accent);
  cursor: pointer;
}
.slider-number {
  width: 52px;
  flex-shrink: 0;
}

/* Export tab */
.export-actions {
  display: flex;
  gap: 8px;
}
.export-actions .button-primary {
  flex: 1;
}
.button-export-save {
  background: #3a9a3a;
}
.button-export-save:hover {
  opacity: 0.85;
}
.button-export-load {
  background: #b07820;
}
.button-export-load:hover {
  opacity: 0.85;
}
.export-ts-row {
  margin-top: 0;
}
.export-classname-input {
  flex: 1;
}
.button-export-ts {
  background: #6050b8;
  flex: 0 0 auto !important;
  white-space: nowrap;
}
.button-export-ts:hover {
  opacity: 0.85;
}

/* Viewport toggle buttons row */
#viewport-buttons {
  display: flex;
  gap: 4px;
  margin-top: 4px;
}

/* Sun angle controls */
.viewport-panel {
  background: rgba(20, 20, 20, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 5px;
  padding: 6px 8px;
  backdrop-filter: blur(4px);
}
.sun-row {
  display: flex;
  align-items: center;
  gap: 5px;
}
.sun-row + .sun-row {
  margin-top: 4px;
}
.sun-label {
  color: rgba(255, 255, 255, 0.35);
  font-size: 10px;
  width: 58px;
  flex-shrink: 0;
}
.sun-slider {
  flex: 1;
  min-width: 80px;
  height: 3px;
  accent-color: #e8c86a;
  cursor: pointer;
}
.sun-value {
  color: rgba(255, 255, 255, 0.35);
  font-size: 10px;
  width: 36px;
  text-align: right;
  flex-shrink: 0;
}

/* Drag handles */
.emitter-header,
.module-card-header {
  cursor: grab;
}
.emitter-header:active,
.module-card-header:active {
  cursor: grabbing;
}
.emitter-header button,
.emitter-header input,
.emitter-header select,
.module-card-header button,
.module-card-header input,
.module-card-header select {
  cursor: default;
}

/* Drag-and-drop state */
.dragging {
  opacity: 0.4;
}
.drag-indicator-top {
  box-shadow: inset 0 2px 0 var(--accent);
}
.drag-indicator-bottom {
  box-shadow: inset 0 -2px 0 var(--accent);
}

/* Assets tab */
#assets-grid {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 4px;
}

.asset-card {
  display: grid;
  grid-template-columns: 44px 1fr 24px;
  align-items: center;
  gap: 6px;
  background: var(--bg-card-0);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 6px;
}

.asset-card-thumb {
  width: 44px;
  height: 44px;
  object-fit: contain;
  border-radius: var(--radius-sm);
  background: rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition: opacity 0.1s;
}
.asset-card-thumb:hover {
  opacity: 0.75;
}

.asset-card-name {
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid transparent;
  color: var(--text);
  font-size: 11px;
  font-family: var(--font-mono);
  padding: 2px 0;
  outline: none;
  min-width: 0;
}
.asset-card-name:focus {
  border-bottom-color: var(--accent);
  color: #fff;
}

.asset-card-delete {
  align-self: center;
}

/* Asset trigger in emitter editor */
.asset-trigger {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 2px 6px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-muted);
  font-size: 11px;
  min-height: 22px;
  transition: border-color 0.1s;
}
.asset-trigger:hover {
  border-color: var(--accent);
}

.asset-trigger-thumb {
  width: 18px;
  height: 18px;
  object-fit: contain;
  border-radius: 2px;
  background: rgba(0, 0, 0, 0.3);
  flex-shrink: 0;
}

.asset-trigger-label {
  color: var(--text);
  font-size: 11px;
  font-family: var(--font-mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

/* Asset picker floating panel */
.asset-picker-overlay {
  position: fixed;
  inset: 0;
  z-index: 1999;
}

.asset-picker-panel {
  background: #2a2a2a;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
  width: 220px;
  max-height: 280px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.asset-picker-search {
  flex-shrink: 0;
  background: var(--bg-input);
  border: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text);
  font-size: 11px;
  padding: 6px 10px;
  outline: none;
}
.asset-picker-search:focus {
  border-bottom-color: var(--accent);
}

.asset-picker-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  padding: 6px;
  overflow-y: auto;
}

.asset-picker-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 4px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition:
    background 0.1s,
    border-color 0.1s;
}
.asset-picker-card:hover {
  background: rgba(255, 255, 255, 0.07);
}
.asset-picker-card.selected {
  border-color: var(--accent);
  background: rgba(77, 159, 255, 0.1);
}

.asset-picker-card--none {
  justify-content: center;
  min-height: 44px;
  color: var(--text-muted);
  font-size: 10px;
}

.asset-picker-thumb {
  width: 52px;
  height: 52px;
  object-fit: contain;
  border-radius: 2px;
  background: rgba(0, 0, 0, 0.3);
}

.asset-picker-label {
  font-size: 9px;
  color: var(--text-muted);
  text-align: center;
  word-break: break-all;
  line-height: 1.2;
  max-width: 100%;
}

/* Number input spinner hide */
input[type="number"] {
  appearance: textfield;
  -moz-appearance: textfield;
}
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
}

/* ----
   Emitter accordion (collapse/expand)
   ---- */

.emitter-body {
  display: flex;
  flex-direction: column;
  transition:
    max-height 0.2s ease,
    opacity 0.15s ease;
  overflow: hidden;
}

.emitter-card--collapsed .emitter-body {
  display: none;
}

.emitter-card--collapsed .emitter-header {
  border-bottom: none;
}

.emitter-collapse-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--bg-card-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 11px;
  line-height: 1;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.1s, color 0.1s;
}
.emitter-collapse-toggle:hover {
  background: var(--bg-card-2);
  color: var(--text);
}

/* Timeline panel */
#timeline {
  flex-shrink: 0;
  height: 200px;
  display: flex;
  border-top: 1px solid var(--border);
  background: var(--bg-root);
}

/* Left tracks area */
#tl-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

/* Ruler row */
#tl-ruler-row {
  flex-shrink: 0;
  height: 20px;
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg-sidebar);
}

.tl-label-cell {
  width: 100px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
}

#tl-ruler {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.tl-ruler-mark {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(255, 255, 255, 0.08);
}

.tl-ruler-label {
  position: absolute;
  top: 2px;
  left: 3px;
  font-size: 9px;
  color: var(--text-muted);
  white-space: nowrap;
  pointer-events: none;
}

/* Scroll area for rows */
#tl-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
}

/* Emitter rows */
.tl-row {
  display: flex;
  height: 28px;
  border-bottom: 1px solid var(--border);
}

.tl-row-label {
  width: 100px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 6px;
  border-right: 1px solid var(--border);
  background: var(--bg-sidebar);
}

.tl-row-name {
  flex: 1;
  font-size: 10px;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tl-add-btn {
  background: transparent;
  border: none;
  color: var(--accent);
  font-size: 13px;
  line-height: 1;
  padding: 0 2px;
  cursor: pointer;
  flex-shrink: 0;
  transition: color 0.1s;
}
.tl-add-btn:hover {
  color: #fff;
}

/* Track column */
.tl-track {
  flex: 1;
  position: relative;
  overflow: hidden;
}

/* Command blocks */
.tl-cmd-block {
  position: absolute;
  top: 4px;
  bottom: 4px;
  border-radius: 3px;
  cursor: grab;
  cursor: pointer;
  min-width: 4px;
  transition: filter 0.1s;
}
.tl-cmd-block:hover {
  filter: brightness(1.25);
}
.tl-cmd-block--selected {
  outline: 1px solid #fff;
  outline-offset: 1px;
}
.tl-cmd-block--dragging {
  opacity: 0.6;
  cursor: grabbing;
  z-index: 5;
}

.tl-cmd-block--play {
  background: rgba(77, 159, 255, 0.7);
  border: 1px solid rgba(77, 159, 255, 0.9);
}
.tl-cmd-block--play.tl-cmd-block--infinite {
  background: rgba(77, 159, 255, 0.3);
  border-style: dashed;
}
.tl-cmd-block--burst {
  background: rgba(255, 180, 50, 0.85);
  border: 1px solid rgba(255, 200, 80, 0.9);
}

/* Playhead */
#tl-playhead {
  position: absolute;
  top: 20px; /* below ruler */
  bottom: 0;
  width: 1px;
  background: rgba(255, 80, 80, 0.9);
  pointer-events: none;
  z-index: 10;
  display: none;
  left: calc(100px + var(--tl-ph-pos, 0) * (100% - 100px));
}
#tl-playhead::before {
  content: "";
  position: absolute;
  top: 0;
  left: -3px;
  width: 7px;
  height: 7px;
  background: rgba(255, 80, 80, 0.9);
  border-radius: 50%;
}

/* Right sidebar */
#tl-sidebar {
  width: 220px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--border);
  background: var(--bg-sidebar);
  overflow: hidden;
}

#tl-controls {
  flex-shrink: 0;
  display: flex;
  gap: 4px;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}

#tl-autoplay-label {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

#tl-autoplay-label input {
  display: none;
}

#tl-autoplay-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 12px;
  padding: 4px 6px;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}

#tl-autoplay-label:hover #tl-autoplay-toggle {
  background: var(--bg-card-2);
  color: #fff;
}

#tl-autoplay-label input:checked + #tl-autoplay-toggle {
  border-color: rgba(77, 159, 255, 0.6);
  color: rgba(77, 159, 255, 1);
  background: rgba(77, 159, 255, 0.12);
}

#tl-controls button {
  flex: 1;
  background: var(--bg-card-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 10px;
  padding: 4px 4px;
  cursor: pointer;
  transition: background 0.1s;
  white-space: nowrap;
}
#tl-controls button:hover:not(:disabled) {
  background: var(--bg-card-2);
  color: #fff;
}
#tl-controls button:disabled {
  opacity: 0.4;
  cursor: default;
}
#tl-btn-play:not(:disabled) {
  border-color: rgba(82, 192, 82, 0.5);
  color: #6adc6a;
}
#tl-btn-stop:not(:disabled) {
  border-color: rgba(224, 82, 82, 0.4);
  color: var(--danger);
}

#tl-cmd-panel {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.tl-hint {
  color: var(--text-muted);
  font-size: 10px;
  text-align: center;
  padding-top: 12px;
}

.tl-field-row {
  display: grid;
  grid-template-columns: 60px 1fr;
  align-items: center;
  gap: 5px;
  min-height: 22px;
}

.tl-field-label {
  color: var(--text-label);
  font-size: 10px;
  white-space: nowrap;
}

.tl-field-input,
.tl-field-select {
  width: 100%;
}

.tl-delete-btn {
  margin-top: 4px;
  font-size: 10px;
}