/* Typography & theme */
:root {
  --navy-900: #0b1526;
  --navy-800: #0f1f39;
  --navy-700: #14294d;
  --navy-600: #1a3464;
  --diamond: #e6f1ff;
  --diamond-glow: rgba(230, 241, 255, 0.25);
  --accent: #8ab4ff;
  --success: #2bd4a5;
  --danger: #ff6b6b;
  --text-strong: #f2f6ff;
  --text-muted: #b7c6e7;
  --glass: rgba(14, 26, 48, 0.55);
  --glass-strong: rgba(14, 26, 48, 0.75);
  --border: rgba(138, 180, 255, 0.25);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text-strong);
  background:
    radial-gradient(1200px 600px at 80% -20%, rgba(138,180,255,0.10), transparent 60%),
    radial-gradient(900px 500px at 20% 120%, rgba(77, 120, 216, 0.15), transparent 60%),
    linear-gradient(180deg, var(--navy-900), var(--navy-800));
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 14px; }
.logo {
  height: 44px;
  width: auto;
  filter: drop-shadow(0 2px 10px rgba(255,255,255,0.08));
}
.titles h1 {
  font-size: 20px; margin: 0; letter-spacing: 0.5px; font-weight: 800;
}
.titles .subtitle { margin: 2px 0 0; color: var(--text-muted); font-weight: 600; }

.header-right { display: flex; gap: 10px; align-items: center; }
.badge {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.6px;
  border: 1px solid var(--border);
  background: var(--glass);
  text-transform: uppercase;
}
.badge.live { color: var(--success); }
.badge.net { color: var(--danger); }
.hidden { display: none; }

/* Layout */
.layout {
  display: grid;
  grid-template-rows: 1fr auto;
  height: calc(100vh - 74px);
}
.stage {
  position: relative;
  overflow: hidden;
  background: radial-gradient(800px 300px at 70% 20%, rgba(255,255,255,0.05), transparent 60%), var(--navy-900);
}
.stage-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transition: opacity 250ms ease;
}

/* Overlay */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px;
  pointer-events: none;
}
.caption {
  align-self: flex-start;
  backdrop-filter: blur(6px);
  background: var(--glass);
  border: 1px solid var(--border);
  padding: 10px 12px;
  border-radius: 10px;
  max-width: 70vw;
}
.photo-name { font-weight: 700; }
.photo-time { color: var(--text-muted); font-size: 13px; margin-top: 2px; }

.qr {
  align-self: flex-end;
  display: grid;
  gap: 8px;
  justify-items: center;
  backdrop-filter: blur(6px);
  background: var(--glass);
  border: 1px solid var(--border);
  padding: 10px;
  border-radius: 12px;
}
.qr-image {
  width: clamp(140px, 20vh, 260px);
  height: clamp(140px, 20vh, 260px);
  object-fit: contain;
  background: rgba(255,255,255,0.9);
  border-radius: 8px;
  box-shadow: 0 6px 30px rgba(138, 180, 255, 0.15), 0 0 0 1px var(--diamond-glow) inset;
}
.qr-label { font-weight: 700; letter-spacing: 0.5px; color: var(--diamond); text-shadow: 0 1px 0 rgba(0,0,0,0.5); }

/* Controls */
.controls {
  position: absolute;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  padding: 8px;
  border-radius: 999px;
  background: var(--glass-strong);
  border: 1px solid var(--border);
  pointer-events: auto;
}
.btn {
  appearance: none; border: 1px solid var(--border); background: rgba(255,255,255,0.04);
  color: var(--text-strong); font-weight: 700; padding: 8px 12px; border-radius: 10px; cursor: pointer;
}
.btn:hover { background: rgba(255,255,255,0.08); }
.btn.primary { background: linear-gradient(180deg, rgba(138,180,255,0.20), rgba(138,180,255,0.08)); border-color: rgba(138,180,255,0.45); }

/* Filmstrip */
.filmstrip {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 12px 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  border-top: 1px solid var(--border);
}
.thumb {
  position: relative;
  flex: 0 0 auto;
  width: 120px; height: 68px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid transparent;
  cursor: pointer;
  background: rgba(255,255,255,0.03);
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb .ring {
  position: absolute; inset: 0; border: 2px solid transparent; border-radius: 8px; transition: border-color 160ms ease;
}
.thumb:hover .ring { border-color: rgba(138,180,255,0.5); }
.thumb.active .ring { border-color: var(--accent); }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 90px; transform: translateX(-50%);
  padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--glass-strong); color: var(--text-strong); font-weight: 700;
  opacity: 0; pointer-events: none; transition: opacity 200ms ease;
}
.toast.show { opacity: 1; }

@media (max-width: 900px) {
  .filmstrip { gap: 8px; }
  .thumb { width: 100px; height: 60px; }
  .controls { bottom: 10px; }
}