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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #1a1a2e;
  color: #e0e0e0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  font-size: 13px;
}

#app {
  display: flex;
  width: 100%;
  height: 100%;
}

/* ---- Canvas area ---- */
#canvas-container {
  flex: 1;
  position: relative;
  background: #0f0f1a;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#gl-canvas {
  display: block;
  max-width: 100%;
  max-height: 100%;
  image-rendering: auto;
}

/* ---- Error overlay ---- */
#error-overlay {
  position: absolute;
  top: 8px;
  left: 8px;
  right: 8px;
  padding: 12px 16px;
  background: rgba(180, 20, 20, 0.92);
  border-left: 4px solid #ff4444;
  border-radius: 4px;
  color: #fff;
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  z-index: 10;
  backdrop-filter: blur(4px);
}

#error-overlay.hidden {
  display: none;
}

/* ---- Status bar ---- */
#status-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 4px 10px;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  gap: 16px;
  font-size: 11px;
  color: #888;
  font-family: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
  z-index: 5;
}

#status-bar span {
  white-space: nowrap;
}

/* ---- Sidebar ---- */
#sidebar {
  width: 280px;
  min-width: 280px;
  background: #16213e;
  border-left: 1px solid #2a2a4a;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

#sidebar h3 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #888;
  padding: 12px 14px 6px;
  border-bottom: 1px solid #2a2a4a;
  margin-bottom: 4px;
}

#info-panel {
  border-bottom: 1px solid #2a2a4a;
}

.info-row {
  display: flex;
  justify-content: space-between;
  padding: 4px 14px;
  font-size: 12px;
}

.info-row label {
  color: #777;
  flex-shrink: 0;
  margin-right: 8px;
}

.info-row span {
  color: #ccc;
  text-align: right;
  word-break: break-all;
}

/* Compile status colors */
.status-ok { color: #4caf50 !important; }
.status-error { color: #f44336 !important; }
.status-pending { color: #888 !important; }
.status-stale { color: #ff9800 !important; }

/* ---- Canvas presets ---- */
#canvas-presets {
  border-bottom: 1px solid #2a2a4a;
}

.preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px 14px;
}

.preset-buttons button {
  flex: 1;
  min-width: 38px;
  padding: 4px 6px;
  background: #1a1a2e;
  color: #888;
  border: 1px solid #2a2a4a;
  border-radius: 3px;
  cursor: pointer;
  font-size: 10px;
  font-family: inherit;
  transition: all 0.15s;
}

.preset-buttons button:hover {
  background: #2a2a4a;
  color: #ccc;
}

.preset-buttons button.active {
  background: #4a4a8a;
  color: #fff;
  border-color: #6a6aaa;
}

.playback-row {
  padding: 6px 14px 0;
}

.playback-btn {
  width: 100%;
  padding: 6px 10px;
  background: #1a1a2e;
  color: #ddd;
  border: 1px solid #2a2a4a;
  border-radius: 4px;
  cursor: pointer;
  font-size: 12px;
}

.playback-btn:hover {
  background: #2a2a4a;
}

.playback-btn.paused {
  background: #4a4a8a;
  color: #fff;
  border-color: #6a6aaa;
}

/* ---- Params panel (Phase 2) ---- */
#params-panel {
  flex: 1;
  overflow-y: auto;
}