:root {
  --bg-dark: #111113;
  --bg-panel: #1a1a1e;
  --bg-section: #222226;
  --border: #2a2a30;
  --accent: #00FF88;
  --accent-dim: #00cc6a;
  --accent-glow: rgba(0, 255, 136, 0.15);
  --text: #e8e8ec;
  --text-dim: #777780;
  --text-muted: #555560;
  --danger: #ff4466;
  --warning: #ffaa22;
  --font-mono: 'JetBrains Mono', monospace;
  --font-sans: 'Space Grotesk', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg-dark);
  color: var(--text);
  font-family: var(--font-sans);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
  display: flex;
  flex-direction: column;
}

/* Toolbar */
#toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 48px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  padding: 0 12px;
  flex-shrink: 0;
  z-index: 100;
}

#toolbar-left, #toolbar-right { display: flex; align-items: center; gap: 4px; }
#toolbar-center { display: flex; align-items: center; gap: 16px; }

#logo { display: flex; align-items: center; gap: 8px; margin-right: 12px; }
.logo-icon {
  color: var(--accent);
  font-size: 22px;
  line-height: 1;
  animation: logo-pulse 3s ease-in-out infinite;
}
@keyframes logo-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
}
.logo-text {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 14px;
  letter-spacing: -0.5px;
}
.logo-accent { color: var(--accent); }

.tb-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-dim);
  padding: 5px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 12px;
  transition: all 0.15s ease;
}
.tb-btn:hover {
  background: var(--bg-section);
  border-color: var(--border);
  color: var(--text);
}
.tb-btn.accent { color: var(--accent); }
.tb-btn.accent:hover {
  background: var(--accent-glow);
  border-color: var(--accent-dim);
  box-shadow: 0 0 12px var(--accent-glow);
}
.tb-btn.active {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
}
.tb-btn.small { padding: 3px 8px; font-size: 11px; }
.tb-label { font-weight: 500; }
.tb-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 4px;
}

#time-display {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 2px;
  min-width: 64px;
  text-align: center;
}

#speed-control {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--text-dim);
}
#speed-select {
  background: var(--bg-section);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
}

/* Main Layout */
#main-layout {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* Panels */
.panel {
  width: 260px;
  min-width: 260px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
  transition: width 0.25s ease, min-width 0.25s ease, opacity 0.2s ease;
}
.panel.collapsed {
  width: 0;
  min-width: 0;
  overflow: hidden;
  opacity: 0;
  border: none;
}
#right-panel { border-right: none; border-left: 1px solid var(--border); }

.panel-header {
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.panel-section {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}
.section-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

/* AI Input */
.ai-input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ai-input-group input {
  background: var(--bg-section);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 6px;
  font-family: var(--font-sans);
  font-size: 12px;
  outline: none;
  transition: border-color 0.2s;
}
.ai-input-group input:focus { border-color: var(--accent); }
.ai-input-group input::placeholder { color: var(--text-muted); }

.btn-ai {
  background: linear-gradient(135deg, var(--accent-dim), #00dd77);
  border: none;
  color: #000;
  padding: 7px 12px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.btn-ai:hover {
  box-shadow: 0 0 20px var(--accent-glow);
  transform: translateY(-1px);
}
.btn-ai:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.ai-status {
  font-size: 11px;
  color: var(--accent);
  margin-top: 4px;
  min-height: 16px;
  font-family: var(--font-mono);
}
.ai-status.error { color: var(--danger); }

/* Animation Grid */
.anim-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}
.anim-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-section);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 6px 8px;
  border-radius: 5px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 11px;
  transition: all 0.15s;
}
.anim-btn:hover {
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-glow);
}
.anim-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}
.anim-icon { font-size: 14px; }

/* Preset Grid */
.preset-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}
.preset-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--bg-section);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 8px 6px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 10px;
  transition: all 0.15s;
}
.preset-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}
.preset-btn.active {
  border-color: var(--accent);
  color: var(--accent);
}
.preset-colors {
  display: flex;
  gap: 2px;
}
.preset-swatch {
  width: 12px;
  height: 12px;
  border-radius: 2px;
  border: 1px solid rgba(255,255,255,0.1);
}

/* Object Grid */
.obj-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}
.obj-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: var(--bg-section);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 6px 8px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 11px;
  transition: all 0.15s;
}
.obj-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

/* Object List */
.obj-list {
  max-height: 120px;
  overflow-y: auto;
}
.obj-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 6px;
  font-size: 11px;
  color: var(--text-dim);
  border-radius: 3px;
}
.obj-list-item:hover { background: var(--bg-section); }
.obj-delete {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-size: 12px;
  opacity: 0.5;
  transition: opacity 0.15s;
}
.obj-delete:hover { opacity: 1; }

/* Color Controls */
.color-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.color-swatch {
  width: 28px;
  height: 28px;
  border-radius: 5px;
  border: 2px solid var(--border);
  cursor: pointer;
  transition: all 0.15s;
  position: relative;
}
.color-swatch:hover { border-color: var(--text-dim); transform: scale(1.1); }
.color-swatch.active { border-color: var(--accent); box-shadow: 0 0 8px var(--accent-glow); }

.color-grid {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.color-part {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.color-part-label {
  font-size: 10px;
  color: var(--text-dim);
  min-width: 60px;
}
.color-part-input {
  width: 32px;
  height: 22px;
  border: 1px solid var(--border);
  border-radius: 3px;
  cursor: pointer;
  background: none;
  padding: 0;
}
.color-part-input::-webkit-color-swatch-wrapper { padding: 0; }
.color-part-input::-webkit-color-swatch { border: none; border-radius: 2px; }

/* 3D Viewport */
#scene-container {
  flex: 1;
  min-width: 0;
  position: relative;
  background: #000;
}
#scene-container canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

/* Timeline Panel */
#timeline-panel {
  height: 80px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
#timeline-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border-bottom: 1px solid var(--border);
  height: 28px;
}
#kf-count {
  font-size: 10px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-left: auto;
}

#timeline-track-wrapper {
  flex: 1;
  padding: 4px 12px;
  position: relative;
  display: flex;
  flex-direction: column;
}
#timeline-track {
  flex: 1;
  background: var(--bg-section);
  border-radius: 4px;
  position: relative;
  cursor: pointer;
  overflow: hidden;
}
#timeline-playhead {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent);
  left: 0;
  z-index: 5;
  pointer-events: none;
  box-shadow: 0 0 6px var(--accent);
}
#timeline-playhead::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -4px;
  width: 10px;
  height: 10px;
  background: var(--accent);
  clip-path: polygon(50% 100%, 0 0, 100% 0);
}
#timeline-keyframes {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}
.kf-diamond {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--warning);
  transform: rotate(45deg) translateY(-50%);
  top: 50%;
  border-radius: 1px;
  cursor: pointer;
  transition: all 0.15s;
  z-index: 2;
}
.kf-diamond:hover {
  background: var(--accent);
  transform: rotate(45deg) translateY(-50%) scale(1.3);
}

#timeline-ticks {
  height: 14px;
  position: relative;
  margin-top: 2px;
}
.tick-label {
  position: absolute;
  font-size: 8px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  transform: translateX(-50%);
}

/* Footer */
#footer {
  height: 28px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  font-size: 10px;
  color: var(--text-muted);
  flex-shrink: 0;
}
#footer a {
  color: var(--accent);
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 700;
}
#footer a:hover { text-decoration: underline; }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* Responsive */
@media (max-width: 900px) {
  .panel { width: 220px; min-width: 220px; }
  .tb-label { display: none; }
}
@media (max-width: 700px) {
  .panel { width: 0; min-width: 0; overflow: hidden; opacity: 0; border: none; }
  .panel.mobile-open { width: 260px; min-width: 260px; opacity: 1; position: absolute; z-index: 50; top: 48px; bottom: 108px; border: 1px solid var(--border); }
  #left-panel.mobile-open { left: 0; }
  #right-panel.mobile-open { right: 0; }
}