/* ============================================
   AMBIENT STUDIES — Wireframe / Colour-Block Pass v3
   Palette: Medusa-inspired monochrome + smoke
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700&family=Cormorant+Garamond:ital,wght@0,400;0,600;1,400&display=swap');

/* --- Design Tokens --- */
:root {
  /* Palette — pulled from Medusa tattoo reference
     Pure blacks, charcoal panels, smoke-grey text,
     off-white primaries, warm stone accent */
  --bg-void:        #000000;
  --bg-deep:        #0a0a0a;
  --bg-panel:       #111111;
  --bg-card:        #1a1a1a;
  --bg-hover:       #222222;
  --border-subtle:  #2a2a2a;
  --border-glow:    #3a3a3a;

  --text-primary:   #e8e5e0;       /* warm off-white */
  --text-secondary: #a8a8a8;       /* smoke grey */
  --text-muted:     #666666;       /* dark grey */

  --accent-warm:    #b8a080;       /* muted warm stone */
  --accent-gold:    #b8a080;       /* alias for consistency */
  --accent-smoke:   #888888;       /* mid smoke */
  --accent-ember:   #8a6a4a;       /* deep warm */
  --accent-crimson: #4a2020;       /* dark blood (subtle) */

  /* Typography */
  --font-display: 'Cinzel', serif;
  --font-body:    'Cormorant Garamond', serif;

  /* Layout */
  --player-h:     54px;
  --player-w:     auto;
  --timer-size:   180px;
  --radius:       6px;
  --radius-lg:    10px;
  --transition:   0.35s ease;
}

/* --- Reset --- */
*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
}
html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
button { font-family: inherit; }

/* ============================================
   SCENE CONTAINER
   ============================================ */
#scene-container {
  position: fixed; inset: 0; z-index: 0;
  background: var(--bg-deep);
  background-image: repeating-linear-gradient(
    45deg, transparent, transparent 40px,
    rgba(255,255,255,.01) 40px, rgba(255,255,255,.01) 41px
  );
}
.scene-layer { position: absolute; inset: 0; }
#layer-paintings { z-index: 1; }

/* Scene frame images — stacked full-screen, crossfaded via JS */
.scene-frame {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0;
  /* transition duration set entirely by scenes.js */
  transition-property: opacity;
  transition-timing-function: ease-in-out;
  /* Prevent flicker on compositing */
  will-change: opacity;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

#layer-css-fx {
  z-index: 2; pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.6) 100%);
}
#layer-particles { z-index: 3; pointer-events: none; }
#layer-particles canvas { width: 100%; height: 100%; display: block; }

/* ============================================
   UI OVERLAY
   ============================================ */
#ui-overlay {
  position: fixed; inset: 0; z-index: 10;
  pointer-events: none;
  transition: opacity var(--transition);
}
#ui-overlay > * { pointer-events: auto; }

#ui-overlay.hidden {
  opacity: 0;
  pointer-events: none !important;
}
#ui-overlay.hidden > * {
  pointer-events: none !important;
}

/* ============================================
   HIDE-UI BUTTON  (top-right, always visible)
   ============================================ */
#btn-hide-ui {
  position: fixed;
  top: 20px; right: 20px;
  z-index: 100;
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background: rgba(17, 17, 17, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-secondary);
  font-size: 1.1rem; cursor: pointer;
  display: grid; place-items: center;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
#btn-hide-ui:hover {
  background: rgba(17, 17, 17, 0.95);
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}
#timer-card {
  position: absolute;
  top: 24px; left: 24px;
  width: 240px;
  padding: 20px;
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: 0 8px 40px rgba(0,0,0,0.7);
}

.timer-tabs {
  display: flex;
  gap: 2px;
  margin-bottom: 20px;
  background: var(--bg-void);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  padding: 2px;
}

.timer-tab {
  flex: 1;
  padding: 8px 4px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 4px;
  transition: all var(--transition);
}
.timer-tab:hover { color: var(--text-secondary); }
.timer-tab.active {
  background: var(--bg-card);
  color: var(--accent-warm);
  box-shadow: 0 0 8px rgba(184,160,128,0.1);
}

#timer-card .timer-display {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.1em;
  margin-bottom: 20px;
  text-shadow: 0 0 20px rgba(184,160,128,0.15);
}

.timer-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.timer-main-btn {
  padding: 10px 40px;
  border-radius: var(--radius);
  border: 1px solid var(--accent-warm);
  background: rgba(184,160,128,0.08);
  color: var(--accent-warm);
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
}
.timer-main-btn:hover {
  background: rgba(184,160,128,0.18);
  box-shadow: 0 0 12px rgba(184,160,128,0.12);
}

.timer-skip-btn {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: grid; place-items: center;
  transition: all var(--transition);
}
.timer-skip-btn:hover {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

/* ============================================
   SCENE SELECTORS  (bottom-left cluster)
   ============================================ */
#scene-selectors {
  position: absolute;
  bottom: 16px; left: 20px;
  display: flex; gap: 10px;
  align-items: center;
}
.scene-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  background: rgba(17, 17, 17, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: pointer;
  display: grid; place-items: center;
  position: relative;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.scene-icon:hover {
  border-color: var(--accent-warm);
  transform: translateY(-3px);
  box-shadow: 0 4px 16px rgba(184,160,128,0.12);
}
.scene-icon.active {
  border-color: var(--accent-warm);
  box-shadow: 0 0 12px rgba(184,160,128,0.15);
  .scene-icon.active img {
  filter: invert(0.85) sepia(0.3) saturate(0.5) hue-rotate(10deg);
}
}

.scene-icon .scene-label {
  position: absolute;
  bottom: calc(100% + 8px); left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-family: var(--font-display);
  font-size: 0.55rem; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--accent-warm);
  background: var(--bg-card); padding: 4px 10px;
  border-radius: 3px; border: 1px solid var(--border-subtle);
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.scene-icon:hover .scene-label { opacity: 1; }

/* ============================================
   AMBIENT SFX VOLUME CONTROLS  (bottom-right)
   ============================================ */
#sfx-area {
  position: absolute;
  bottom: 16px; right: 20px;
  display: flex; flex-direction: column;
  align-items: flex-end; gap: 0;
}

#btn-sfx-toggle {
  width: 44px; height: 44px;
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  background: rgba(17, 17, 17, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: var(--text-secondary);
  font-size: 1rem; cursor: pointer;
  display: grid; place-items: center;
  transition: border-color var(--transition), color var(--transition);
}
#btn-sfx-toggle:hover {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

/* Popover — opens upward */
#sfx-list {
  position: absolute;
  bottom: calc(100% + 8px); right: 0;
  width: 240px;
  background: rgba(17, 17, 17, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 14px 0 10px;
  box-shadow: 0 -8px 32px rgba(0,0,0,0.6);
  display: none;
  max-height: 70vh;
  overflow-y: auto;
}
#sfx-list.open { display: block; }

#sfx-list .sfx-list-header {
  padding: 0 18px 12px;
  font-family: var(--font-display);
  font-size: 0.6rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent-warm);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 4px;
}

.sfx-item {
  display: flex; align-items: center;
  gap: 10px;
  padding: 10px 18px;
}

.sfx-item .sfx-icon {
  flex-shrink: 0;
  color: var(--text-muted);
}

.sfx-item .sfx-name {
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  min-width: 0;
  flex-shrink: 0;
}

/* Volume sliders in SFX panel */
.sfx-slider {
  -webkit-appearance: none; appearance: none;
  flex: 1;
  height: 3px;
  background: var(--border-subtle);
  border-radius: 2px;
  outline: none;
  min-width: 50px;
}
.sfx-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent-warm);
  cursor: pointer;
}
.sfx-slider::-moz-range-thumb {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent-warm);
  cursor: pointer;
  border: none;
}
.sfx-group-label {
  padding: 10px 18px 4px;
  font-family: var(--font-display);
  font-size: 0.5rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.sfx-play-btn {
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.55rem;
  cursor: pointer;
  display: grid; place-items: center;
  flex-shrink: 0;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.sfx-play-btn:hover {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}
.sfx-play-btn.playing {
  border-color: var(--accent-warm);
  background: rgba(184,160,128,0.15);
  color: var(--accent-warm);
}
#btn-sfx-toggle.sfx-active {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

/* ============================================
   NOW-PLAYING BAR  (bottom-centre, compact)
   ============================================ */
#player-bar {
  position: absolute;
  bottom: 12px;
  left: 50%; transform: translateX(-50%);
  width: fit-content;
  height: var(--player-h);
  background: rgba(17, 17, 17, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: 28px;
  display: flex; align-items: center;
  padding: 0 8px 0 18px;
  gap: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.6);
}

/* — Track info (left) — */
.player-track-info {
  display: flex; align-items: center; gap: 10px;
  min-width: 0; flex-shrink: 1;
}
.player-track-info .track-title {
  font-family: var(--font-display);
  font-size: 0.72rem;
  color: var(--text-primary);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 130px;
}
.player-track-info .track-artist {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-style: italic;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  max-width: 80px;
}

/* — Playback controls (centre) — */
.player-controls {
  display: flex; align-items: center; gap: 6px;
  flex-shrink: 0;
}

.ctrl-btn {
  width: 30px; height: 30px;
  border-radius: 50%;
  border: none; background: transparent;
  color: var(--text-secondary);
  font-size: 0.7rem; cursor: pointer;
  display: grid; place-items: center;
  transition: color var(--transition);
}
.ctrl-btn:hover { color: var(--text-primary); }

.ctrl-btn.play-btn {
  width: 36px; height: 36px;
  border: 1px solid var(--accent-warm);
  color: var(--accent-warm);
  font-size: 0.85rem;
  padding: 0;
  line-height: 0;
}
.ctrl-btn.play-btn:hover {
  background: rgba(184,160,128,0.1);
}

/* — Volume (right of controls) — */
.player-volume {
  display: flex; align-items: center; gap: 6px;
  flex-shrink: 0;
}
.player-volume .vol-icon {
  color: var(--text-muted);
  font-size: 0.75rem;
}
.volume-slider {
  -webkit-appearance: none; appearance: none;
  width: 70px; height: 3px;
  background: var(--border-subtle);
  border-radius: 2px; outline: none;
}
.volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent-warm);
  cursor: pointer;
}
.volume-slider::-moz-range-thumb {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent-warm);
  cursor: pointer;
  border: none;
}

/* — Playlist toggle button (right end) — */
#btn-open-playlist {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem; cursor: pointer;
  display: grid; place-items: center;
  flex-shrink: 0;
  transition: border-color var(--transition), color var(--transition);
}
#btn-open-playlist:hover {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

/* ============================================
   PLAYLIST POPUP  (anchored above player bar)
   ============================================ */
#playlist-popup {
  position: absolute;
  bottom: calc(12px + var(--player-h) + 12px);
  left: 50%; transform: translateX(-50%);
  width: 620px;
  max-height: 420px;
  background: rgba(17, 17, 17, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: 0 -8px 40px rgba(0,0,0,0.6);
  display: none;
  overflow: hidden;
}
#playlist-popup.open { display: flex; }

/* — Left column: playlist covers — */
.playlist-covers {
  width: 180px;
  border-right: 1px solid var(--border-subtle);
  padding: 16px 12px;
  display: flex; flex-direction: column; gap: 10px;
  overflow-y: auto;
}

.playlist-cover-item {
  position: relative;
  width: 100%; aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  overflow: hidden; cursor: pointer;
  transition: border-color var(--transition);
}
.playlist-cover-item:hover {
  border-color: var(--accent-warm);
}
.playlist-cover-item.active {
  border-color: var(--accent-warm);
  box-shadow: 0 0 10px rgba(184,160,128,0.15);
}
.playlist-cover-item .cover-img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}
.playlist-cover-item:hover .cover-img {
  transform: scale(1.08);
}

.playlist-cover-item .cover-label {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 6px 8px;
  background: linear-gradient(to top, rgba(0,0,0,0.85), transparent);
  font-family: var(--font-display);
  font-size: 0.55rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--text-primary);
}

/* — Right column: track list — */
.playlist-tracks {
  flex: 1;
  display: flex; flex-direction: column;
}

.playlist-tracks-header {
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.playlist-tracks-header h3 {
  font-family: var(--font-display);
  font-size: 0.7rem; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent-warm);
}
.playlist-tracks-header .playlist-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 2px;
}

.playlist-track-list {
  flex: 1; overflow-y: auto;
  padding: 8px 0;
}

.playlist-track-item {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 20px;
  cursor: pointer;
  transition: background var(--transition);
}
.playlist-track-item:hover { background: var(--bg-hover); }
.playlist-track-item.active {
  background: var(--bg-card);
  border-left: 2px solid var(--accent-warm);
}

.playlist-track-item .p-track-num {
  font-family: var(--font-display);
  font-size: 0.65rem; color: var(--text-muted);
  min-width: 18px;
}
.playlist-track-item .p-track-title {
  font-size: 0.82rem; color: var(--text-primary);
}
.playlist-track-item .p-track-artist {
  font-size: 0.72rem; color: var(--text-muted);
  font-style: italic;
}

/* Scrollbars */
.playlist-covers::-webkit-scrollbar,
.playlist-track-list::-webkit-scrollbar {
  width: 4px;
}
.playlist-covers::-webkit-scrollbar-thumb,
.playlist-track-list::-webkit-scrollbar-thumb {
  background: var(--border-subtle); border-radius: 2px;
}
/* ============================================
   CANDLE GLOW — Ballroom scene
   Warm pulsing overlay, activated by JS adding
   .scene-ballroom to #layer-css-fx
   ============================================ */
#layer-css-fx.scene-ballroom {
  background:
    radial-gradient(ellipse at 50% 25%, rgba(180, 120, 50, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse at center, transparent 50%, rgba(0,0,0,0.6) 100%);
  animation: candleGlow 3s ease-in-out infinite;
}

@keyframes candleGlow {
  0%, 100% { opacity: 0.8; }
  30%      { opacity: 1; }
  50%      { opacity: 0.6; }
  70%      { opacity: 0.9; }
  85%      { opacity: 0.7; }
}

/* ============================================
   WELCOME OVERLAY
   ============================================ */
#welcome-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: var(--bg-void);
  display: grid; place-items: center;
  cursor: pointer;
  transition: opacity 1s ease;
}
#welcome-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}
.welcome-content { text-align: center; }
.welcome-title {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin-bottom: 16px;
}
.welcome-subtitle {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  :root {
    --timer-size: 150px;
  }
  #playlist-popup { width: 480px; }
  .playlist-covers { width: 140px; }
  #scene-selectors { bottom: 80px; left: 16px; }
  #sfx-area { bottom: 80px; right: 16px; }
}

@media (max-width: 540px) {
  :root {
    --timer-size: 130px;
  }
  #player-bar { max-width: calc(100vw - 32px); }
  #timer-card { top: 12px; left: 12px; padding: 14px 12px; }
  #timer-card .timer-display { font-size: 1.4rem; }
  #playlist-popup {
    width: calc(100vw - 32px);
    max-height: 360px;
  }
  .playlist-covers { width: 110px; }
  .scene-icon { width: 38px; height: 38px; }

  #scene-selectors {
    bottom: 74px;
    left: 50%;
    transform: translateX(-50%);
  }
  #sfx-area {
    bottom: 74px;
    right: 16px;
  }
  #sfx-list {
    width: 220px;
    max-height: 50vh;
  }



}
.sfx-play-btn.muted {
  opacity: 0.4;
  pointer-events: none;
}
  .ctrl-btn.ctrl-active {
  color: var(--accent-warm);
}