/* ============================================================
   ColorCube — Additive & Subtractive page styles
   ============================================================ */

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

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

/* Canvas area */
.mix-canvas-wrap {
  aspect-ratio: 1;
  position: relative;
  background: #000;
  border-radius: var(--radius);
  overflow: hidden;
}
.mix-canvas-wrap.subtractive { background: #fff; }
canvas.mix-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Controls */
.mix-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  justify-content: center;
}
.mix-slider-row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.mix-slider-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}
.mix-slider-label span:first-child { font-weight: 500; }
.mix-slider-label span:last-child  { color: var(--text-muted); }

input[type=range].mix-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}
input[type=range].mix-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--border);
  cursor: pointer;
}
input[type=range].mix-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--border);
  cursor: pointer;
}

/* Result swatch */
.mix-result {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}
.mix-result-swatch {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.mix-result-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}
.mix-result-label strong {
  display: block;
  color: var(--white);
  font-size: 0.85rem;
}

/* ── Complement table ────────────────────────────────────────── */
.complement-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.88rem;
}
.complement-table th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  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);
}
.complement-table td {
  padding: 0.6rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.complement-table tr:last-child td { border-bottom: none; }
.col-swatch {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border-radius: 3px;
  vertical-align: middle;
  margin-right: 0.4rem;
  border: 1px solid rgba(255,255,255,0.1);
}

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