:root {
  --bg-deep:       #0F091D;
  --bg-elev:       #16102B;
  --bg-elev-2:     #221A48;
  --plasma:        #5346FF;
  --amber:         #E65C19;
  --cyan:          #38B6FF;
  --silver:        #BCC5D3;

  --silver-muted:  rgba(188, 197, 211, 0.62);
  --silver-faint:  rgba(188, 197, 211, 0.42);
  --silver-line:   rgba(188, 197, 211, 0.10);

  --amber-line:    rgba(230, 92, 25, 0.35);
  --amber-soft:    rgba(230, 92, 25, 0.08);
  --plasma-glow:   rgba(83, 70, 255, 0.30);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(ellipse 70% 45% at 50% -5%, rgba(83, 70, 255, 0.16) 0%, transparent 62%),
    radial-gradient(ellipse 30% 20% at 50% 0%, rgba(230, 92, 25, 0.10) 0%, transparent 65%),
    radial-gradient(ellipse at 50% 20%, var(--bg-elev-2) 0%, var(--bg-deep) 70%);
  background-attachment: fixed;
  font-family: 'Georgia', serif;
  color: var(--silver);
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
  padding: 3.5rem 1.5rem 4rem;
  width: 100%;
  max-width: 880px;
}

/* Header */
.radio-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

.radio-header h1 {
  font-size: 2.8rem;
  font-weight: normal;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--amber);
}

.radio-header .tagline {
  font-size: 0.9rem;
  color: var(--silver-muted);
  font-style: italic;
  letter-spacing: 0.05em;
}

.back {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--silver-faint);
  text-decoration: none;
  border-bottom: 1px solid rgba(188, 197, 211, 0.22);
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.back:hover,
.back:focus-visible {
  color: var(--amber);
  border-color: rgba(230, 92, 25, 0.4);
}

.back:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 4px;
}

/* Tiles */
.tiles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  width: 100%;
}

.tile {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0.75rem 0.75rem 1rem;
  background: linear-gradient(150deg, var(--bg-elev) 0%, var(--bg-elev-2) 50%, var(--bg-elev) 100%);
  border: 1px solid var(--amber-line);
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  color: inherit;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}

.tile:hover {
  border-color: var(--plasma);
  transform: translateY(-3px);
  box-shadow: 0 0 24px var(--plasma-glow);
}

.tile[aria-pressed="true"] {
  border-color: var(--amber);
  box-shadow: 0 0 22px rgba(230, 92, 25, 0.30);
}

.tile:focus-visible {
  outline: 2px solid var(--plasma);
  outline-offset: 3px;
}

.tile-cover {
  display: block;
  aspect-ratio: 16 / 9;
  width: 100%;
  object-fit: cover;
  border-radius: 6px;
  background: var(--bg-deep);
  border: 1px solid var(--silver-line);
}

.tile-title {
  font-family: 'Georgia', serif;
  font-size: 0.95rem;
  font-weight: normal;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
  line-height: 1.2;
  margin-top: 0.25rem;
}

.tile-subtitle {
  font-size: 0.72rem;
  color: var(--silver-muted);
  font-style: italic;
  letter-spacing: 0.04em;
  line-height: 1.4;
}

/* Player */
.player-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--bg-deep);
  border: 1px solid var(--amber-line);
  border-radius: 10px;
  overflow: hidden;
}

.player-wrap iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

.player-wrap:empty,
.player-wrap iframe[src=""] {
  /* Placeholder state if iframe hasn't loaded a src yet */
}

/* Playback controls (prev/next) */
.player-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.control-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--amber-line);
  color: var(--amber);
  font-family: inherit;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
}

.control-btn:hover,
.control-btn:focus-visible {
  border-color: var(--amber);
  background: var(--amber-soft);
}

.control-btn:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

.control-btn:active {
  transform: scale(0.95);
}

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

.control-btn--primary {
  width: 58px;
  height: 58px;
  font-size: 1.3rem;
  border-width: 1.5px;
}

/* Now playing + hint */
.now-playing {
  font-size: 0.85rem;
  color: var(--silver);
  font-style: italic;
  letter-spacing: 0.04em;
  text-align: center;
  min-height: 1.4em;
}

.now-playing strong {
  color: var(--amber);
  font-style: normal;
  font-weight: normal;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hint {
  font-size: 0.7rem;
  color: var(--silver-faint);
  font-style: italic;
  letter-spacing: 0.04em;
  text-align: center;
  max-width: 38rem;
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--amber);
  color: var(--bg-deep);
  padding: 0.5rem 1rem;
  font-family: 'Georgia', serif;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  z-index: 100;
  transition: top 0.2s;
}

.skip-link:focus { top: 1rem; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .skip-link { transition: none; }
  .tile:hover { transform: none; }
}

/* Mobile */
@media (max-width: 640px) {
  .tiles {
    grid-template-columns: 1fr;
    max-width: 360px;
    margin: 0 auto;
  }
  .radio-header h1 {
    font-size: 2rem;
    letter-spacing: 0.28em;
  }
  main {
    gap: 1.75rem;
    padding: 2.5rem 1rem 3rem;
  }
}