/* ── Live AR camera session ─────────────────────────────── */
.ar-session-root {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: #000;
  overflow: hidden;
}

.ar-session-stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.ar-session-stage canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.ar-session-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.ar-session-top {
  padding: max(16px, env(safe-area-inset-top)) 16px 12px;
  background: linear-gradient(180deg, rgba(0,0,0,0.72) 0%, transparent 100%);
  pointer-events: none;
}

.ar-session-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(22px, 5vw, 32px);
  letter-spacing: 0.04em;
  color: #fff;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

.ar-session-sub {
  margin-top: 4px;
  font-family: 'DM Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.72);
  max-width: 90vw;
  line-height: 1.5;
}

.ar-session-reticle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 72px;
  height: 72px;
  pointer-events: none;
}

.ar-session-reticle-ring {
  position: absolute;
  inset: 0;
  border: 2px solid rgba(167, 139, 250, 0.85);
  border-radius: 50%;
  box-shadow: 0 0 16px rgba(167, 139, 250, 0.45);
  animation: ar-reticle-pulse 1.6s ease-in-out infinite;
}

.ar-session-reticle-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  margin: -4px 0 0 -4px;
  border-radius: 50%;
  background: #a78bfa;
  box-shadow: 0 0 10px #a78bfa;
}

@keyframes ar-reticle-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.08); opacity: 0.75; }
}

.ar-session-toolbar {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  padding: 12px 12px max(16px, env(safe-area-inset-bottom));
  background: linear-gradient(0deg, rgba(0,0,0,0.82) 0%, transparent 100%);
  pointer-events: auto;
}

.ar-tool-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 58px;
  padding: 8px 4px;
  border-radius: var(--glass-radius-md);
  border: none;
  background: oklch(1 0 0 / 0.08);
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(var(--glass-blur-near)) saturate(var(--glass-saturate));
  -webkit-backdrop-filter: blur(var(--glass-blur-near)) saturate(var(--glass-saturate));
  box-shadow: inset 0 1px 0 oklch(1 0 0 / 0.22), inset 0 0 0 0.5px var(--glass-rim);
  transition: transform 0.22s var(--glass-spring-press), box-shadow 0.22s var(--glass-spring-hover);
  font-family: var(--font-ui);
}

.ar-tool-btn:hover:not(:disabled) {
  transform: scale(1.02);
  box-shadow: inset 0 1px 0 oklch(1 0 0 / 0.32), var(--glass-e1-shadow);
}

.ar-tool-btn:active:not(:disabled) {
  transform: scale(0.98);
}

.ar-tool-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.ar-tool-btn--wide {
  grid-column: 1 / -1;
  min-height: 44px;
  flex-direction: row;
  gap: 8px;
  margin-top: 8px;
}

.ar-tool-icon {
  font-size: 18px;
  line-height: 1;
}

.ar-tool-label {
  font-family: 'DM Mono', monospace;
  font-size: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.78);
}

.ar-session-error {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(320px, 88vw);
  padding: 20px;
  border-radius: 14px;
  border: 1px solid rgba(248, 113, 113, 0.45);
  background: rgba(20, 10, 10, 0.88);
  color: #fecaca;
  font-family: 'DM Mono', monospace;
  font-size: 11px;
  line-height: 1.6;
  text-align: center;
  pointer-events: auto;
}

.ar-launch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 24px;
  margin-top: 16px;
  border-radius: 14px;
  border: 1px solid rgba(167, 139, 250, 0.55);
  background: linear-gradient(135deg, rgba(88, 28, 135, 0.55), rgba(15, 118, 110, 0.35));
  color: #fff;
  font-family: 'DM Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s;
}

.ar-launch-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(167, 139, 250, 0.25);
}

.ar-tool-btn--on {
  background: oklch(0.55 0.22 295 / 0.45);
  box-shadow: inset 0 1px 0 oklch(1 0 0 / 0.28), 0 0 18px oklch(0.65 0.25 295 / 0.35);
}

.ar-walk-banner {
  position: absolute;
  left: 50%;
  bottom: 118px;
  transform: translateX(-50%);
  width: min(420px, 92vw);
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(10, 8, 20, 0.78);
  border: 1px solid rgba(167, 139, 250, 0.45);
  color: rgba(255,255,255,0.9);
  font-family: 'DM Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.06em;
  text-align: center;
  line-height: 1.45;
  pointer-events: none;
  backdrop-filter: blur(10px);
}

@media (max-width: 520px) {
  .ar-session-toolbar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .ar-walk-banner {
    bottom: 148px;
  }
}