/* ============================================================
   ColorCube — Colour Models page styles
   ============================================================ */

.cm-section { margin-bottom: 3rem; }

/* ── Unified colour picker ───────────────────────────────────── */
.picker-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  padding: 1.25rem;
  margin: 1.5rem 0;
}
.picker-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.picker-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}
@media (max-width: 600px) { .picker-layout { grid-template-columns: 1fr; } }

/* Colour wheel + lightness canvas */
.picker-canvas-col {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}
canvas.picker-wheel  { width: 100%; max-width: 220px; height: auto; cursor: crosshair; display: block; }
canvas.picker-lstrip { width: 100%; max-width: 220px; height: 20px; border-radius: 3px; cursor: crosshair; display: block; }

/* Value readouts */
.picker-readouts {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.picker-swatch-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}
.picker-swatch {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.picker-hex {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--white);
  letter-spacing: 0.04em;
}
.picker-model-block {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
}
.picker-model-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.3rem;
}
.picker-model-values {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--white);
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.picker-model-values span { white-space: nowrap; }
.picker-model-values em   { color: var(--text-muted); font-style: normal; }

/* ── Model info cards ────────────────────────────────────────── */
.model-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  margin-bottom: 0.5rem;
  border: 1px solid;
}
.tag-screen  { color: #4488ff; border-color: #4488ff44; background: #4488ff11; }
.tag-print   { color: #cc44cc; border-color: #cc44cc44; background: #cc44cc11; }
.tag-perceptual { color: #44ee99; border-color: #44ee9944; background: #44ee9911; }
.tag-video   { color: #ffaa33; border-color: #ffaa3344; background: #ffaa3311; }
.tag-reference { color: #aaaaaa; border-color: #aaaaaa44; background: #aaaaaa11; }

/* ── Channel notation table ──────────────────────────────────── */
.cm-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  margin: 1.25rem 0;
}
.cm-table th {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
.cm-table td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  vertical-align: top;
  line-height: 1.5;
}
.cm-table tr:last-child td { border-bottom: none; }
.cm-table td:first-child {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-c);
  white-space: nowrap;
}

.diagram-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  font-style: italic;
}