/* ============================================================
   webgl-sand-mandala.css — Sand Mandala Draw (Canvas2D hybrid)
   ASMR Sanctuary · accent #d97757 (terracotta sand)
   ============================================================ */

/* ── Stage ──────────────────────────────────────────────── */
.webgl-stage {
  position: relative;
  width: 100vw;
  height: 100svh;
  min-height: 500px;
  overflow: hidden;
  background: #14100a;
}

#mandala-canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}

/* ── Nav overlay ─────────────────────────────────────────── */
body.webgl-page .nav {
  background: rgba(20, 16, 10, 0.45);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(217, 119, 87, 0.14);
}

/* ── Badge (top-center) ──────────────────────────────────── */
.sim-badge {
  position: absolute;
  top: 72px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 18px;
  background: rgba(20, 16, 10, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(217, 119, 87, 0.28);
  border-radius: 999px;
  font-size: 0.78rem;
  font-family: var(--font-sans, Inter, sans-serif);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: #f5ddc9;
  white-space: nowrap;
  pointer-events: none;
  z-index: 10;
}

/* ── Controls (bottom-center pill) ──────────────────────── */
.sim-controls {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: rgba(20, 16, 10, 0.66);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(217, 119, 87, 0.24);
  border-radius: 18px;
  z-index: 10;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 94vw;
  max-height: 34vh;
  overflow-y: auto;
}

.sim-label {
  font-size: 0.72rem;
  font-family: var(--font-sans, Inter, sans-serif);
  color: #dbab8a;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}

.sim-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  background: rgba(217, 119, 87, 0.10);
  border: 1px solid rgba(217, 119, 87, 0.30);
  border-radius: 999px;
  color: #f5ddc9;
  font-size: 0.78rem;
  font-family: var(--font-sans, Inter, sans-serif);
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
  white-space: nowrap;
}

.sim-btn:hover {
  background: rgba(217, 119, 87, 0.20);
  border-color: rgba(217, 119, 87, 0.55);
}

.sim-btn.active,
.sim-btn[aria-pressed="true"] {
  background: rgba(217, 119, 87, 0.30);
  border-color: #d97757;
  color: #fff;
  box-shadow: 0 0 10px rgba(217, 119, 87, 0.38);
}

.sim-btn:focus-visible {
  outline: 2px solid #d97757;
  outline-offset: 2px;
}

/* colour swatch buttons */
.mandala-color-btn { padding: 4px 10px 4px 6px; }
.mandala-swatch {
  display: inline-block;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.sim-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 4px;
  background: rgba(217, 119, 87, 0.24);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.sim-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #d97757;
  border: 2px solid #fff;
  box-shadow: 0 0 6px rgba(217, 119, 87, 0.65);
  cursor: pointer;
  transition: transform 0.15s;
}

.sim-slider::-webkit-slider-thumb:hover { transform: scale(1.2); }

.sim-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #d97757;
  border: 2px solid #fff;
  box-shadow: 0 0 6px rgba(217, 119, 87, 0.65);
  cursor: pointer;
}

.sim-slider:focus-visible {
  outline: 2px solid #d97757;
  outline-offset: 3px;
}

/* ── Below-canvas content area ───────────────────────────── */
.webgl-below {
  background: var(--bg, #0a0a12);
  padding: 48px 0 64px;
}

.webgl-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: #d97757;
  text-decoration: none;
  margin-bottom: 32px;
  transition: opacity 0.2s;
}

.webgl-back-link:hover { opacity: 0.75; }

.webgl-intro {
  max-width: 680px;
  margin-bottom: 40px;
}

.webgl-intro h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-family: var(--font-serif, 'Cormorant Garamond', serif);
  color: var(--text, #e8e4f0);
  margin-bottom: 12px;
}

.webgl-intro p {
  font-size: 0.95rem;
  color: var(--muted, #7d7a96);
  line-height: 1.7;
}

.sim-webgl-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}

.sim-webgl-card {
  background: rgba(217, 119, 87, 0.07);
  border: 1px solid rgba(217, 119, 87, 0.18);
  border-radius: 14px;
  padding: 20px 18px;
}

.sim-webgl-card h3 {
  font-size: 0.72rem;
  font-family: var(--font-sans, Inter, sans-serif);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #d97757;
  margin-bottom: 6px;
}

.sim-webgl-card p {
  font-size: 0.88rem;
  color: var(--text, #e8e4f0);
  line-height: 1.5;
  margin: 0;
}

.related-section { margin-bottom: 48px; }

.related-section h3 {
  font-size: 1rem;
  font-family: var(--font-sans, Inter, sans-serif);
  font-weight: 600;
  color: var(--text, #e8e4f0);
  margin-bottom: 14px;
}

.related-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.related-grid__item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 16px;
  background: rgba(217, 119, 87, 0.09);
  border: 1px solid rgba(217, 119, 87, 0.22);
  border-radius: 999px;
  font-size: 0.83rem;
  color: #f5ddc9;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s;
}

.related-grid__item:hover {
  background: rgba(217, 119, 87, 0.20);
  border-color: rgba(217, 119, 87, 0.46);
}

/* ── FAQ section ─────────────────────────────────────────── */
.faq-section {
  max-width: 720px;
  margin-bottom: 48px;
}

.faq-section h2 {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-family: var(--font-serif, 'Cormorant Garamond', serif);
  color: var(--text, #e8e4f0);
  margin-bottom: 20px;
}

.faq-item {
  border: 1px solid rgba(217, 119, 87, 0.18);
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq-item[open] { border-color: rgba(217, 119, 87, 0.40); }

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  font-size: 0.92rem;
  font-family: var(--font-sans, Inter, sans-serif);
  font-weight: 500;
  color: var(--text, #e8e4f0);
  cursor: pointer;
  list-style: none;
  gap: 12px;
  user-select: none;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-size: 1.2rem;
  color: #d97757;
  flex-shrink: 0;
  transition: transform 0.25s;
}

.faq-item[open] summary::after { transform: rotate(45deg); }

.faq-item summary:focus-visible {
  outline: 2px solid #d97757;
  outline-offset: -2px;
}

.faq-answer {
  padding: 0 18px 16px;
  font-size: 0.88rem;
  color: var(--muted, #7d7a96);
  line-height: 1.7;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 480px) {
  .sim-badge { font-size: 0.7rem; padding: 5px 14px; top: 64px; }
  .sim-controls { gap: 6px; padding: 8px 12px; bottom: 12px; }
  .sim-slider { width: 56px; }
  .sim-webgl-grid { grid-template-columns: 1fr 1fr; }
}

.webgl-related { margin-top: 2rem; }
.webgl-related h3 { font-size: 1.1rem; margin-bottom: 1rem; color: var(--fg, #e2e8f0); }
.webgl-faq { margin-top: 2.5rem; }