/* ══════════════════════════════════════
   music-section.css — 音樂試聽區塊
   ══════════════════════════════════════ */

/* ── 音樂卡片格線 ── */
.music-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 0.5rem;
}

/* ── 單張音樂卡片 ── */
.music-card {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: rgba(5, 10, 25, 0.72);
  cursor: pointer;
  transition:
    transform     0.4s var(--ease-pop),
    box-shadow    0.4s var(--ease-smooth),
    border-color  0.35s var(--ease-smooth);
  box-shadow: 0 6px 24px rgba(0,0,0,0.4);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.music-card:hover {
  transform: translateY(-8px) scale(1.025);
  border-color: color-mix(in oklab, var(--accent-color) 55%, transparent);
  box-shadow:
    0 16px 44px rgba(0,0,0,0.45),
    0 0 28px color-mix(in oklab, var(--accent-color) 25%, transparent);
}
.music-card.is-playing {
  border-color: var(--accent-color);
  box-shadow:
    0 0 0 2px var(--accent-color),
    0 16px 48px rgba(0,0,0,0.5),
    0 0 40px color-mix(in oklab, var(--accent-color) 35%, transparent);
  transform: translateY(-6px) scale(1.02);
}

/* ── SVG 封面區 ── */
.music-artwork {
  width: 100%;
  aspect-ratio: 1 / 1;
  display: block;
  position: relative;
  overflow: hidden;
}
.music-artwork svg {
  width: 100%;
  height: 100%;
  display: block;
  transition: filter 0.4s var(--ease-smooth);
}
.music-card:hover .music-artwork svg {
  filter: brightness(1.15) saturate(1.2);
}

/* ── 播放中：SVG 光暈疊加 ── */
.music-artwork::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 50% 50%, color-mix(in oklab, var(--accent-color) 20%, transparent) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.5s var(--ease-smooth);
  pointer-events: none;
}
.music-card.is-playing .music-artwork::after { opacity: 1; }

/* ── 中央播放圖示覆蓋 ── */
.music-play-overlay {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transition: opacity 0.3s var(--ease-smooth);
  pointer-events: none;
}
.music-card:hover .music-play-overlay { opacity: 1; }
.music-card.is-playing .music-play-overlay { opacity: 1; }

.music-play-icon {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: rgba(3, 5, 16, 0.72);
  border: 2px solid var(--accent-color);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent-color);
  font-size: 1.2rem;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 24px color-mix(in oklab, var(--accent-color) 45%, transparent);
  transition: transform 0.35s var(--ease-pop), background 0.3s;
}
.music-card.is-playing .music-play-icon {
  background: var(--accent-color);
  color: #020a18;
}
.music-card:hover .music-play-icon {
  transform: scale(1.12);
}

/* ── 資訊區 ── */
.music-info {
  padding: 14px 16px 16px;
  position: relative;
}
.music-title {
  font-family: "Orbitron", sans-serif;
  font-size: 0.78rem; font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-main);
  margin-bottom: 4px;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.music-card.is-playing .music-title { color: var(--accent-color); }

.music-meta {
  font-size: 0.72rem;
  color: var(--text-sub);
  opacity: 0.75;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ── 播放進度條 ── */
.music-progress-wrap {
  margin: 10px 16px 0;
  height: 3px;
  background: rgba(255,255,255,0.08);
  border-radius: 999px;
  overflow: hidden;
  opacity: 0;
  transition: opacity 0.4s var(--ease-smooth);
}
.music-card.is-playing .music-progress-wrap { opacity: 1; }
.music-card.is-loaded  .music-progress-wrap { opacity: 0.4; }

.music-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-color), color-mix(in oklab, var(--accent-color) 60%, #fff));
  border-radius: 999px;
  transition: width 0.25s linear;
}

/* ── 時間顯示 ── */
.music-time {
  display: flex; justify-content: space-between;
  padding: 4px 16px 14px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.65rem;
  color: var(--text-sub);
  opacity: 0;
  transition: opacity 0.4s var(--ease-smooth);
}
.music-card.is-playing .music-time,
.music-card.is-loaded  .music-time { opacity: 0.6; }

/* ── 播放中波形動畫列（底部裝飾） ── */
.music-wave-bars {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 28px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 3px;
  padding: 0 16px 6px;
  opacity: 0;
  transition: opacity 0.4s var(--ease-smooth);
  pointer-events: none;
}
.music-card.is-playing .music-wave-bars { opacity: 1; }

.music-wave-bar {
  width: 3px;
  border-radius: 2px;
  background: var(--accent-color);
  opacity: 0.7;
  animation: waveBar 0.8s ease-in-out infinite alternate;
  transform-origin: bottom;
}
.music-wave-bar:nth-child(1)  { animation-delay: 0s;    height: 6px; }
.music-wave-bar:nth-child(2)  { animation-delay: 0.1s;  height: 10px; }
.music-wave-bar:nth-child(3)  { animation-delay: 0.05s; height: 14px; }
.music-wave-bar:nth-child(4)  { animation-delay: 0.15s; height: 8px; }
.music-wave-bar:nth-child(5)  { animation-delay: 0.08s; height: 16px; }
.music-wave-bar:nth-child(6)  { animation-delay: 0.2s;  height: 10px; }
.music-wave-bar:nth-child(7)  { animation-delay: 0.03s; height: 12px; }
.music-wave-bar:nth-child(8)  { animation-delay: 0.18s; height: 7px; }
.music-wave-bar:nth-child(9)  { animation-delay: 0.12s; height: 15px; }
.music-wave-bar:nth-child(10) { animation-delay: 0.07s; height: 9px; }
@keyframes waveBar {
  0%   { transform: scaleY(0.3); }
  100% { transform: scaleY(1.6); }
}
/* 暫停時停住 */
.music-card.is-paused .music-wave-bars { opacity: 0.35; }
.music-card.is-paused .music-wave-bar  { animation-play-state: paused; }

/* ── Light mode ── */
[data-theme="light"] .music-card {
  background: rgba(230, 240, 255, 0.88);
  border-color: rgba(26,109,204,0.2);
  box-shadow: 0 6px 20px rgba(10,30,80,0.1);
}
[data-theme="light"] .music-card:hover {
  box-shadow: 0 16px 40px rgba(10,30,80,0.14), 0 0 20px rgba(26,109,204,0.12);
}
[data-theme="light"] .music-card.is-playing {
  box-shadow: 0 0 0 2px var(--accent-color), 0 16px 40px rgba(10,30,80,0.14);
}
[data-theme="light"] .music-play-icon { background: rgba(240,245,255,0.88); }
[data-theme="light"] .music-card.is-playing .music-play-icon { background: var(--accent-color); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .music-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
}
@media (max-width: 480px) {
  .music-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .music-title { font-size: 0.72rem; }
}