/* ── Visualizer page ─────────────────────────────────────────────────────── */

/* Main canvas: actual 37x50 px, scaled up via CSS for crisp display */
#main-canvas {
  width: 222px;   /* 37 * 6 */
  height: 300px;  /* 50 * 6 */
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  border: 2px solid #e2e8f0;
  border-radius: 10px;
  background: #0f172a;
  display: block;
  margin: 0 auto;
}

/* Loading / error states */
#viz-loading, #viz-error {
  text-align: center;
  padding: 2rem;
  color: #64748b;
}

#viz-error {
  color: #b91c1c;
}

/* Eigenface thumbnail canvases next to each slider */
.eigenface-thumb {
  width: 28px;    /* 37 * 0.75 */
  height: 38px;   /* 50 * 0.75 */
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  border: 1px solid #e2e8f0;
  border-radius: 3px;
  flex-shrink: 0;
  background: #1e293b;
}

/* Slider row: thumbnail + label + range + value */
.slider-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid #f1f5f9;
}

.slider-row:last-child {
  border-bottom: none;
}

.slider-label {
  display: flex;
  flex-direction: column;
  min-width: 52px;
}

.pc-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: #374151;
}

.var-pct {
  font-size: 0.7rem;
  color: #94a3b8;
}

.slider-input {
  flex: 1;
  min-width: 0;
  height: 4px;
  accent-color: #0d9488;
}

.slider-value {
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  color: #64748b;
  min-width: 34px;
  text-align: right;
}

/* Scrollable slider container */
#slider-container {
  max-height: 480px;
  overflow-y: auto;
  padding-right: 0.25rem;
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 transparent;
}

/* Variance progress bar */
#variance-bar {
  background-color: #0d9488;
  transition: width 0.15s ease;
}

/* Controls row */
.viz-controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

/* Stop button hidden by default */
#btn-stop {
  display: none;
}