/* 強彩度×高コントラスト プレイヤー v0.23 (seek/volume完全分離) */
:root { --gap: 16px; }

.page { max-width: 960px; margin: 80px auto 120px; padding: 0 var(--safe-pad); }

.hero__title { font-size: var(--h2); font-weight: 800; letter-spacing: .2px; }
.hero__lead { margin-top: 8px; opacity: .9; }
.hero__cta { margin-top: 16px; }

.player-section { margin-top: 24px; }
.player {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--gap);
  align-items: center;
  background: var(--surface);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow-md);
}

.player__primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 56px; min-height: 56px;   /* 44px超え保証 */
  border-radius: 16px;
}

.player__track { 
  display: grid; 
  gap: 8px; 
  position: relative;
}

/* Seek/Volume バー共通コンテナ */
.player__bar-container {
  position: relative;
  height: 44px; /* タップ領域確保: 28px→44px */
  display: flex;
  align-items: center;
}

.player__bar-container--volume {
  width: 100px;
}

/* バー背景（seek/volume で異なる色） */
.player__bar {
  position: absolute;
  height: 8px; 
  border-radius: 999px;
  overflow: hidden;
  width: 100%;
  pointer-events: none;
}

.bar--seek-bg {
  background: var(--line);
}

.bar--volume-bg {
  background: color-mix(in oklab, var(--brand) 20%, transparent);
}

/* 進捗表示（seek/volume で異なるクラス） */
.bar--seek {
  height: 100%; 
  width: 0%;
  background: var(--cta-bg);
  transition: width 120ms linear;
}

.bar--volume {
  height: 100%; 
  width: 100%;
  background: var(--brand);
  transition: width 100ms ease-out;
}

.player__time { 
  font-variant-numeric: tabular-nums; 
  opacity: .9; 
  font-size: 14px;
}

.player__side { 
  display: flex; 
  align-items: center; 
  gap: 12px; 
}

.player__volume-container {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-ghost {
  min-width: var(--tap-min); 
  min-height: var(--tap-min);
  padding: 8px 12px; 
  border-radius: 12px;
  background: transparent; 
  color: var(--ink);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: transform 100ms ease-out;
}
.btn-ghost:hover {
  background: var(--surface);
  transform: scale(1.05);
}
.btn-ghost:active { 
  transform: scale(.96); 
}

/* Range入力（seek/volume共通スタイル） */
.range {
  -webkit-appearance: none;
  appearance: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 44px; /* 44px タップ領域確保 */
  background: transparent;
  cursor: pointer;
  z-index: 2;
}

/* つまみ（thumb）: 44px タップ領域確保 */
.range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--brand);
  cursor: pointer;
  border: 3px solid var(--bg);
  box-shadow: 0 2px 8px rgba(0,0,0,0.24);
  /* タップ領域を44px相当に拡張（視覚的には20px） */
  position: relative;
}

.range::-webkit-slider-thumb::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
}

.range::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--brand);
  cursor: pointer;
  border: 3px solid var(--bg);
  box-shadow: 0 2px 8px rgba(0,0,0,0.24);
}

.range:focus {
  outline: none;
}

.range:focus-visible::-webkit-slider-thumb {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.range:focus-visible::-moz-range-thumb {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* Seek特有のスタイル */
.range--seek {
  accent-color: var(--brand);
}

/* Volume特有のスタイル */
.range--volume {
  accent-color: var(--brand);
}

.cta-bottom { 
  position: sticky; 
  bottom: 16px; 
  margin-top: 24px; 
}
.cta-bottom .tone-cta { 
  display: inline-flex; 
  align-items: center; 
  justify-content: center; 
  min-height: var(--tap-min); 
}

/* 視覚的に非表示だがスクリーンリーダーには読ませる */
.sr-only {
  position: absolute; 
  width: 1px; 
  height: 1px; 
  padding: 0; 
  margin: -1px;
  overflow: hidden; 
  clip: rect(0,0,0,0); 
  white-space: nowrap; 
  border: 0;
}

/* Reduced Motion 対応 */
@media (prefers-reduced-motion: reduce) {
  .player.reduce-motion .bar--seek,
  .player.reduce-motion .bar--volume {
    transition: none;
  }
  
  .player.reduce-motion .tone-cta:hover,
  .player.reduce-motion .btn-ghost:hover {
    transform: none;
  }
}

@media (max-width: 480px) {
  .player { 
    grid-template-columns: 1fr; 
    gap: 12px;
  }
  
  .player__side { 
    justify-content: space-between; 
    flex-wrap: wrap; 
    gap: 8px;
  }
  
  .player__volume-container {
    flex: 1;
    min-width: 120px;
  }
  
  .player__bar-container--volume {
    width: 100%;
  }
}