/* ==========================================================================
   CHUNK 3: cinematic demo player (design phase — bundled demo clips only).
   Edge-to-edge player: video owns the viewport, chrome is an overlay.
   ========================================================================== */
.demo-player {
  position: fixed;
  inset: 0;
  z-index: 260;
  background: #000;
  animation: demoPlayerIn 220ms ease-out both;
}
@keyframes demoPlayerIn { from { opacity: 0; } to { opacity: 1; } }
.demo-player-card {
  --player-brightness: 1;
  --video-scale: 1;
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: #000;
  color: #fff;
}

/* Header. */
.demo-player-head {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 5;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: calc(14px + env(safe-area-inset-top, 0px)) 14px 34px;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.72), transparent);
  transition: opacity 300ms ease, transform 300ms ease;
}
.demo-player-heading strong {
  display: block;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.demo-player-heading small {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 3px;
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
}
.demo-badge {
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.12em;
}
.demo-player-actions { display: flex; gap: 8px; }
.demo-round-btn {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border: 0; border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  cursor: pointer;
}
.demo-round-btn:hover { background: rgba(255, 255, 255, 0.22); }
.demo-round-btn .icon { width: 20px; height: 20px; }

/* Stage. */
.demo-stage {
  position: relative;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  touch-action: none;
  background: #000;
}
.demo-stage video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(var(--player-brightness));
  transform: scale(var(--video-scale));
}
.demo-center-play {
  position: absolute;
  top: 50%; left: 50%;
  width: 78px; height: 78px;
  transform: translate(-50%, -50%);
  display: grid; place-items: center;
  border: 0; border-radius: 50%;
  background: rgba(20, 20, 24, 0.55);
  color: #fff;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 12px 44px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.18);
  cursor: pointer;
  z-index: 3;
}
.demo-center-play .icon { width: 32px; height: 32px; }
.gesture-hints {
  position: absolute;
  top: 96px;
  left: 50%;
  transform: translateX(-50%);
  max-width: calc(100% - 40px);
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(10, 10, 14, 0.62);
  color: rgba(255, 255, 255, 0.78);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: opacity 600ms ease;
  z-index: 3;
  pointer-events: none;
}
.gesture-hints.fade { opacity: 0; }

/* Seek feedback flashes. */
.seek-feedback {
  position: absolute;
  top: 0; bottom: 0;
  width: 34%;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  z-index: 3;
}
.seek-feedback.seek-left { left: 0; background: linear-gradient(90deg, rgba(255,255,255,0.10), transparent); }
.seek-feedback.seek-right { right: 0; background: linear-gradient(270deg, rgba(255,255,255,0.10), transparent); }
.seek-feedback-inner {
  display: grid;
  place-items: center;
  gap: 4px;
  width: 74px; height: 74px;
  border-radius: 50%;
  background: rgba(10, 10, 14, 0.66);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.seek-feedback-inner span { font-size: 13px; font-weight: 800; }
.seek-feedback.show { animation: seekFlash 620ms ease-out both; }
@keyframes seekFlash {
  0% { opacity: 0; transform: scale(0.86); }
  18% { opacity: 1; transform: scale(1); }
  70% { opacity: 1; }
  100% { opacity: 0; transform: scale(1.04); }
}

/* Gesture HUD (brightness / volume / zoom). */
.gesture-hud {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(0.92);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 18px;
  background: rgba(10, 10, 14, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  font-size: 15px;
  font-weight: 800;
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: 4;
}
.gesture-hud .icon { width: 22px; height: 22px; }
.gesture-hud.show { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.gesture-meter {
  width: 90px; height: 5px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.18);
  overflow: hidden;
}
.gesture-meter i {
  display: block;
  height: 100%;
  width: var(--gesture-level, 50%);
  border-radius: inherit;
  background: #fff;
}

/* Bottom chrome. */
.demo-chrome {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 5;
  padding: 40px 14px calc(14px + env(safe-area-inset-bottom, 0px));
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.78), transparent);
  transition: opacity 300ms ease, transform 300ms ease;
}
.demo-progress { margin-bottom: 8px; }
.demo-progress input[type="range"] {
  width: 100%;
  accent-color: #fff;
  cursor: pointer;
}
.demo-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.demo-controls-left, .demo-controls-right {
  display: flex;
  align-items: center;
  gap: 4px;
}
.demo-btn {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 0; border-radius: 50%;
  background: transparent;
  color: #fff;
  cursor: pointer;
}
.demo-btn:hover { background: rgba(255, 255, 255, 0.12); }
.demo-btn .icon { width: 24px; height: 24px; }
.demo-btn.demo-play .icon { width: 34px; height: 34px; }
.demo-time {
  margin-left: 8px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.demo-volume {
  width: 84px;
  accent-color: #fff;
  cursor: pointer;
}

/* Idle: chrome fades away while playing. */
.demo-player.player-idle .demo-player-head,
.demo-player.player-idle .demo-chrome { opacity: 0; pointer-events: none; }
.demo-player.player-idle .demo-stage { cursor: none; }

/* Drawers (episodes / settings). */
.demo-drawer {
  position: absolute;
  top: 0; right: 0; bottom: 0;
  z-index: 6;
  width: min(340px, 88%);
  display: flex;
  flex-direction: column;
  background: rgba(14, 14, 18, 0.92);
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  animation: demoDrawerIn 300ms cubic-bezier(0.2, 0.9, 0.3, 1) both;
}
@keyframes demoDrawerIn { from { transform: translateX(60px); opacity: 0; } to { transform: none; opacity: 1; } }
.demo-drawer[hidden] { display: none; }
.demo-drawer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 18px 12px;
}
.demo-drawer-head h2 { margin: 0; font-size: 16px; font-weight: 800; }
.demo-drawer-close {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border: 0; border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  cursor: pointer;
}
.demo-episode-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 12px 20px;
  display: grid;
  gap: 8px;
  align-content: start;
}
.demo-episode {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  text-align: left;
  cursor: pointer;
}
.demo-episode.active {
  border-color: var(--tone, #b54aea);
  background: color-mix(in srgb, var(--tone, #b54aea) 16%, transparent);
}
.demo-episode-number {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.1);
  font-size: 13px;
  font-weight: 800;
  flex: none;
}
.demo-episode.active .demo-episode-number { background: var(--tone, #b54aea); }
.demo-episode-copy b { display: block; font-size: 13px; }
.demo-episode-copy small { color: rgba(255, 255, 255, 0.55); font-size: 11px; }
.demo-settings-section { padding: 6px 18px 14px; }
.demo-settings-section h3 {
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}
.demo-speed-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.demo-speed-grid button, .demo-fit-row button {
  padding: 10px 0;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.demo-speed-grid button.active, .demo-fit-row button.active {
  border-color: var(--tone, #b54aea);
  background: color-mix(in srgb, var(--tone, #b54aea) 22%, transparent);
}
.demo-fit-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.demo-drawer .demo-note {
  margin: auto 18px 22px;
  color: rgba(255, 255, 255, 0.42);
  font-size: 12px;
}

/* Small screens: hide the volume slider (swipe still works). */
@media (max-width: 560px) {
  .demo-volume { display: none; }
  .demo-time { font-size: 11px; }
  .demo-btn { width: 40px; height: 40px; }
}

/* Reduced motion. */
@media (prefers-reduced-motion: reduce) {
  .demo-player, .demo-drawer { animation: none; }
  .demo-player-head, .demo-chrome { transition: none; }
  .seek-feedback.show { animation: none; opacity: 1; }
}