/* ============================================================
   Design tokens
   ============================================================ */
:root {
  /* Colors */
  --clr-bg-overlay: rgba(10, 0, 0, 0.55);
  --clr-glass-bg: rgba(60, 0, 10, 0.58);
  --clr-glass-border: rgba(255, 200, 180, 0.18);
  --clr-accent: #ff6b35;
  --clr-accent-2: #ffb347;
  --clr-text-primary: #fff5ee;
  --clr-text-muted: rgba(255, 245, 238, 0.6);
  --clr-progress-track: rgba(255, 245, 238, 0.2);
  --clr-progress-fill: #ff6b35;
  --clr-status-dot: #4ade80;

  /* Spacing */
  --sp-xs: 0.25rem;
  --sp-sm: 0.5rem;
  --sp-md: 1rem;
  --sp-lg: 1.5rem;
  --sp-xl: 2rem;

  /* Radii */
  --radius-pill: 999px;
  --radius-lg: 1.25rem;
  --radius-sm: 0.5rem;

  /* Typography — fluid scale */
  --fs-hero: clamp(2.8rem, 9vw + 1rem, 8rem);
  --fs-subtitle: clamp(0.85rem, 1.5vw + 0.4rem, 1.2rem);
  --fs-track: clamp(0.85rem, 1.5vw + 0.3rem, 1.05rem);
  --fs-artist: clamp(0.75rem, 1.2vw + 0.2rem, 0.9rem);
  --fs-ui: clamp(0.7rem, 1.2vw + 0.2rem, 0.88rem);

  /* Player */
  --player-art-size: clamp(52px, 8vw, 76px);
  --player-blur: blur(18px);
  --player-shadow: 0 8px 48px rgba(0, 0, 0, 0.55), 0 2px 8px rgba(0,0,0,0.3);

  /* Transition */
  --t-fast: 150ms ease;
  --t-med: 280ms ease;
}

/* ============================================================
   Reset & base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--clr-text-primary);
  overflow-x: hidden;
  position: relative;
}

img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
svg { display: block; }

/* ============================================================
   Background — two-layer crossfade
   ============================================================ */

/* Both layers sit stacked at z-index 0; JS swaps which one is
   visible by toggling .bg--visible. The non-visible layer acts
   as a staging area for the next image. */
.bg-layer {
  position: fixed;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  /* Warm retro tint */
  filter: saturate(1.15) sepia(0.18);
  opacity: 0;
  transition: opacity 1.8s ease-in-out;
}

.bg-layer.bg--visible {
  opacity: 1;
}

.bg-overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  background: var(--clr-bg-overlay);
  /* Radial vignette */
  background:
    radial-gradient(ellipse 80% 80% at 50% 50%, transparent 30%, rgba(5, 0, 0, 0.7) 100%),
    var(--clr-bg-overlay);
}

/* ============================================================
   Top bar
   ============================================================ */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  padding: var(--sp-sm) clamp(var(--sp-md), 4vw, var(--sp-xl));
  /* Subtle frosted strip */
  background: rgba(10, 0, 0, 0.35);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 200, 180, 0.08);
}

.top-bar__time {
  font-size: var(--fs-ui);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--clr-text-muted);
  min-width: 4ch;
}

.top-bar__status {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: var(--fs-ui);
  font-weight: 500;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--clr-status-dot);
  box-shadow: 0 0 6px var(--clr-status-dot);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.top-bar__links {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.ext-link {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--fs-ui);
  font-weight: 500;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 200, 180, 0.2);
  background: rgba(255, 255, 255, 0.06);
  transition: background var(--t-fast), border-color var(--t-fast), transform var(--t-fast);
}

.ext-link:hover,
.ext-link:focus-visible {
  background: rgba(255, 107, 53, 0.22);
  border-color: rgba(255, 107, 53, 0.5);
  transform: translateY(-1px);
  outline: none;
}

.ext-link__icon {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 5rem clamp(var(--sp-md), 6vw, 4rem) 160px;
  pointer-events: none; /* let clicks pass through to background */
}

.hero__title {
  font-family: 'Tiro Devanagari Hindi', serif;
  font-size: var(--fs-hero);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.01em;
  /* Warm gradient text */
  background: linear-gradient(135deg, #fff5ee 0%, var(--clr-accent-2) 40%, var(--clr-accent) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: none;
  /* Fallback for browsers without background-clip:text */
  filter: drop-shadow(0 2px 24px rgba(255, 107, 53, 0.35));
  animation: fadeSlideUp 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero__subtitle {
  margin-top: var(--sp-md);
  font-size: var(--fs-subtitle);
  font-weight: 400;
  color: var(--clr-text-muted);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  animation: fadeSlideUp 0.9s 0.15s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Player — floating glassmorphism bar
   ============================================================ */
.player {
  position: fixed;
  bottom: clamp(var(--sp-md), 3vh, var(--sp-xl));
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  width: min(96vw, 860px);
  animation: slideUp 0.7s 0.3s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateX(-50%) translateY(40px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.player__inner {
  display: flex;
  align-items: center;
  gap: clamp(var(--sp-sm), 2vw, var(--sp-lg));
  padding: clamp(10px, 2vw, 16px) clamp(var(--sp-md), 3vw, var(--sp-xl));
  background: var(--clr-glass-bg);
  backdrop-filter: var(--player-blur);
  -webkit-backdrop-filter: var(--player-blur);
  border: 1px solid var(--clr-glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--player-shadow);
}

/* ---- Album art ---- */
.player__art-wrap {
  flex-shrink: 0;
  width: var(--player-art-size);
  height: var(--player-art-size);
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255, 200, 180, 0.3);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.12), 0 4px 16px rgba(0,0,0,0.4);
  /* Spin while playing */
  animation: none;
}

.player__art-wrap.is-playing {
  animation: spin 18s linear infinite;
}

.player__art {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ---- Track info ---- */
.player__info {
  flex: 0 0 clamp(90px, 18vw, 160px);
  width: clamp(90px, 18vw, 160px);
  min-width: 0;
  overflow: hidden;
}

.player__track {
  font-size: var(--fs-track);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--clr-text-primary);
}

.player__artist {
  font-size: var(--fs-artist);
  color: var(--clr-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

/* ---- Controls ---- */
.player__controls {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.player__buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(var(--sp-sm), 2vw, var(--sp-lg));
}

.ctrl-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background var(--t-fast), transform var(--t-fast), opacity var(--t-fast);
  color: var(--clr-text-primary);
}

.ctrl-btn svg {
  width: 22px;
  height: 22px;
}

.ctrl-btn--prev,
.ctrl-btn--next {
  width: 36px;
  height: 36px;
  opacity: 0.8;
}

.ctrl-btn--prev:hover,
.ctrl-btn--next:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
}

.ctrl-btn--play {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--clr-accent), #c0392b);
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.45);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

.ctrl-btn--play:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 24px rgba(255, 107, 53, 0.6);
}

.ctrl-btn--play:active { transform: scale(0.96); }

.ctrl-btn--play svg {
  width: 26px;
  height: 26px;
}

.ctrl-btn:focus-visible {
  outline: 2px solid var(--clr-accent);
  outline-offset: 3px;
}

/* ---- Progress bar ---- */
.player__progress-wrap {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.player__time {
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
  color: var(--clr-text-muted);
  min-width: 3ch;
  flex-shrink: 0;
}

.player__progress {
  position: relative;
  flex: 1;
  height: 4px;
  background: var(--clr-progress-track);
  border-radius: var(--radius-pill);
  cursor: pointer;
  /* Expand hit area */
  padding: 10px 0;
  margin: -10px 0;
}

.player__progress::before {
  content: '';
  position: absolute;
  inset: 10px 0;
  border-radius: var(--radius-pill);
  background: var(--clr-progress-track);
}

.player__progress-fill {
  position: absolute;
  top: 10px;
  left: 0;
  height: 4px;
  width: 0%;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent-2));
  border-radius: var(--radius-pill);
  pointer-events: none;
  transition: width 0.1s linear;
}

.player__progress-thumb {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--clr-accent);
  box-shadow: 0 0 6px rgba(255, 107, 53, 0.7);
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--t-fast), transform var(--t-fast);
}

.player__progress:hover .player__progress-thumb,
.player__progress:focus-visible .player__progress-thumb {
  opacity: 1;
}

.player__progress:hover .player__progress-fill,
.player__progress:focus-visible .player__progress-fill {
  height: 5px;
}

/* ============================================================
   Utilities
   ============================================================ */
.hidden { display: none !important; }

/* ============================================================
   Responsive breakpoints
   ============================================================ */

/* Tablet / narrow player */
@media (max-width: 640px) {
  .top-bar__time { display: none; }

  .player__info {
    max-width: 80px;
  }

  .ctrl-btn--play {
    width: 42px;
    height: 42px;
  }

  .ext-link span { display: none; } /* icon-only on very small screens */
  .ext-link { padding: 4px 8px; }
}

/* Mobile — stack info under art */
@media (max-width: 420px) {
  .player__inner {
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--sp-sm);
  }

  .player__info {
    max-width: 100%;
    text-align: center;
    order: 2;
    flex-basis: 100%;
  }

  .player__controls {
    order: 3;
    flex-basis: 100%;
  }

  .player__art-wrap {
    order: 1;
  }
}

/* Large screens — wider player */
@media (min-width: 1100px) {
  .player {
    width: min(88vw, 1000px);
  }
}