/* 音スタジオ — DJ/クラブ風ネオンテーマ（2026-07-07）
   機能は不変。JSが参照するクラス名はすべて維持し、見た目だけ変更。 */

:root {
  --bg: #05060f;
  --bg-card: rgba(16, 18, 33, 0.92);
  --bg-card-hi: #1b2038;
  --accent: #00e5ff;            /* ネオンシアン */
  --accent-hi: #6ff2ff;
  --accent-2: #ff2d95;          /* ネオンマゼンタ */
  --accent-2-hi: #ff6fb5;
  --text: #f2f5ff;
  --text-dim: #8b93b8;
  --danger: #ff4d6d;
  --ok: #3dffa1;
  --radius: 18px;
  --glow-cyan: 0 0 12px rgba(0, 229, 255, 0.45);
  --glow-magenta: 0 0 12px rgba(255, 45, 149, 0.45);
  --line: rgba(0, 229, 255, 0.14);
}

* { box-sizing: border-box; }

/* hidden属性は display:flex 等の指定より必ず優先させる
   （これが無いと hidden にしても表示され続けるバグになる） */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(255, 45, 149, 0.16), transparent 60%),
    radial-gradient(900px 520px at 10% 0%, rgba(0, 229, 255, 0.14), transparent 55%),
    radial-gradient(700px 700px at 50% 115%, rgba(124, 58, 237, 0.18), transparent 60%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", system-ui, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-text-size-adjust: 100%;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

/* ===== 異世界レイヤー：星空とオーロラ（飾り・操作の邪魔をしない） ===== */
/* 星空：小さな光点を敷き詰めて、ゆっくりまたたく */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(1.4px 1.4px at 22% 18%, rgba(255, 255, 255, 0.9), transparent 55%),
    radial-gradient(1.2px 1.2px at 68% 8%,  rgba(160, 240, 255, 0.9), transparent 55%),
    radial-gradient(1.6px 1.6px at 84% 32%, rgba(255, 190, 230, 0.85), transparent 55%),
    radial-gradient(1.1px 1.1px at 12% 46%, rgba(255, 255, 255, 0.7), transparent 55%),
    radial-gradient(1.3px 1.3px at 42% 62%, rgba(170, 220, 255, 0.8), transparent 55%),
    radial-gradient(1.5px 1.5px at 92% 70%, rgba(255, 255, 255, 0.75), transparent 55%),
    radial-gradient(1.1px 1.1px at 58% 86%, rgba(220, 180, 255, 0.8), transparent 55%),
    radial-gradient(1.3px 1.3px at 30% 92%, rgba(255, 255, 255, 0.65), transparent 55%);
  background-size: 340px 340px;
  animation: star-twinkle 5.5s ease-in-out infinite alternate;
}
@keyframes star-twinkle {
  0%   { opacity: 0.45; }
  100% { opacity: 1; }
}

/* オーロラ：ぼんやりした光の帯が、ゆーっくり漂う */
body::after {
  content: "";
  position: fixed;
  inset: -30%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(45% 30% at 30% 35%, rgba(0, 229, 255, 0.10), transparent 70%),
    radial-gradient(50% 32% at 70% 55%, rgba(255, 45, 149, 0.08), transparent 70%),
    radial-gradient(55% 36% at 50% 75%, rgba(124, 58, 237, 0.12), transparent 70%);
  animation: aurora-drift 26s ease-in-out infinite alternate;
}
@keyframes aurora-drift {
  0%   { transform: translate3d(-4%, -2%, 0) rotate(-3deg) scale(1); }
  100% { transform: translate3d(4%, 3%, 0) rotate(3deg) scale(1.08); }
}
@media (prefers-reduced-motion: reduce) {
  body::before, body::after { animation: none; }
}

/* ===== ヘッダー：ネオンサイン ===== */
.app-header {
  text-align: center;
  padding: 22px 16px 6px;
}
.app-header h1 {
  margin: 0;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 0.22em;
  background: linear-gradient(90deg, var(--accent), #b57bff 50%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: neon-breathe 3.2s ease-in-out infinite alternate;
}
@keyframes neon-breathe {
  0%   { filter: drop-shadow(0 0 8px rgba(0, 229, 255, 0.3)) drop-shadow(0 0 14px rgba(255, 45, 149, 0.2)); }
  100% { filter: drop-shadow(0 0 14px rgba(0, 229, 255, 0.55)) drop-shadow(0 0 24px rgba(255, 45, 149, 0.4)); }
}
@media (prefers-reduced-motion: reduce) {
  .app-header h1 { animation: none; }
}
.subtitle {
  margin: 6px 0 0;
  color: var(--text-dim);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

/* イコライザー飾り（音とは連動しない・雰囲気用） */
.eq {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 4px;
  height: 18px;
  margin-top: 10px;
}
.eq span {
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  animation: eq-bounce 1.1s ease-in-out infinite;
  box-shadow: var(--glow-cyan);
}
.eq span:nth-child(1) { animation-delay: 0s;    height: 40%; }
.eq span:nth-child(2) { animation-delay: 0.15s; height: 80%; }
.eq span:nth-child(3) { animation-delay: 0.3s;  height: 55%; }
.eq span:nth-child(4) { animation-delay: 0.45s; height: 95%; }
.eq span:nth-child(5) { animation-delay: 0.6s;  height: 60%; }
.eq span:nth-child(6) { animation-delay: 0.75s; height: 85%; }
.eq span:nth-child(7) { animation-delay: 0.9s;  height: 45%; }
@keyframes eq-bounce {
  0%, 100% { transform: scaleY(0.45); }
  50%      { transform: scaleY(1); }
}
@media (prefers-reduced-motion: reduce) {
  .eq span { animation: none; }
}

.app-main {
  flex: 1;
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 12px 16px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ===== カード：DJデッキ風パネル ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 8px 24px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

/* ファイル選択ボタン */
.file-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 18px;
  background: linear-gradient(135deg, var(--accent-2), #7c3aed 55%, var(--accent));
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.04em;
  border-radius: 14px;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  box-shadow: 0 0 18px rgba(255, 45, 149, 0.35), 0 0 26px rgba(0, 229, 255, 0.2);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
}
.file-button:active { transform: scale(0.98); }
.file-button__icon { font-size: 22px; }

.file-hint {
  margin: 12px 2px 0;
  color: var(--text-dim);
  font-size: 13px;
  text-align: center;
}

/* 追加したら自動で分離トグル（追加カード内・中央寄せ） */
#autoSepToggle {
  display: block;
  margin: 10px auto 0;
}

/* 状態表示 */
.status {
  min-height: 0;
  font-size: 14px;
  text-align: center;
  border-radius: 12px;
  transition: all 0.2s;
}
.status.show {
  min-height: auto;
  padding: 12px 14px;
  border: 1px solid var(--line);
}
.status.info { background: var(--bg-card-hi); color: var(--text); }
.status.error { background: rgba(255, 77, 109, 0.12); color: var(--danger); border-color: rgba(255, 77, 109, 0.35); }
.status.ok { background: rgba(61, 255, 161, 0.1); color: var(--ok); border-color: rgba(61, 255, 161, 0.3); }
.status.loading { background: var(--bg-card-hi); color: var(--text); }

/* 波形 */
.waveform-card { padding: 14px; }
.waveform {
  width: 100%;
  min-height: 128px;
  border-radius: 10px;
  background: #04050c;
}
.time-row {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-size: 12px;
  color: var(--accent);
  text-shadow: 0 0 8px rgba(0, 229, 255, 0.4);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

/* コントロール */
.controls { display: flex; flex-direction: column; gap: 14px; }
.controls__row { display: flex; align-items: center; gap: 12px; }

.btn {
  font-family: inherit;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.05em;
  border: none;
  border-radius: 14px;
  padding: 16px;
  width: 100%;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: opacity 0.15s, transform 0.05s;
}
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn--primary {
  background: linear-gradient(135deg, var(--accent-2), #7c3aed 55%, var(--accent));
  color: #fff;
  box-shadow: 0 0 18px rgba(255, 45, 149, 0.35), 0 0 26px rgba(0, 229, 255, 0.2);
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
}

.zoom-row { gap: 14px; }
.zoom-label {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  flex: 0 0 auto;
  min-width: 48px;
}

/* ===== スライダー共通：ネオンフェーダー ===== */
.seek-slider,
.zoom-slider,
.track__vol-slider,
.fx-tempo-slider {
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 4px;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.35), rgba(255, 45, 149, 0.35));
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.6);
  outline: none;
}
.seek-slider { width: 100%; height: 8px; }
.zoom-slider { width: 100%; height: 8px; }
.zoom-slider:disabled { opacity: 0.4; }

.seek-slider::-webkit-slider-thumb,
.zoom-slider::-webkit-slider-thumb,
.track__vol-slider::-webkit-slider-thumb,
.fx-tempo-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #ffffff, var(--accent) 65%);
  cursor: pointer;
  border: 2px solid rgba(255, 255, 255, 0.25);
  box-shadow: var(--glow-cyan);
}
.seek-slider::-moz-range-thumb,
.zoom-slider::-moz-range-thumb,
.track__vol-slider::-moz-range-thumb,
.fx-tempo-slider::-moz-range-thumb {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent-hi);
  cursor: pointer;
  border: 2px solid rgba(255, 255, 255, 0.25);
  box-shadow: var(--glow-cyan);
}

/* ===== マスター（全体）コントロール ===== */
.master {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-color: rgba(255, 45, 149, 0.25);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 0 22px rgba(255, 45, 149, 0.12), 0 8px 24px rgba(0, 0, 0, 0.45);
}
.master__top { display: flex; }
.master__zoom { display: flex; align-items: center; gap: 14px; }

/* ===== トラック一覧 ===== */
.track-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.empty-hint {
  text-align: center;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.7;
  padding: 24px 8px;
}

/* ===== 1トラック：デッキ ===== */
.track { display: flex; flex-direction: column; gap: 12px; }

.track__head {
  display: flex;
  align-items: center;
  gap: 8px;
}
.track__name {
  flex: 1;
  min-width: 0;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  background: var(--bg-card-hi);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 12px;
}
.track__name:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--glow-cyan);
}

.track__head-btns { display: flex; gap: 6px; flex: 0 0 auto; }
.icon-btn {
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  background: var(--bg-card-hi);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
}
.icon-btn:active { transform: scale(0.96); box-shadow: var(--glow-cyan); }
.icon-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.icon-btn--danger { color: var(--danger); border-color: rgba(255, 77, 109, 0.3); }

.track__waveform {
  width: 100%;
  min-height: 80px;
  border-radius: 10px;
  background: #04050c;
  border: 1px solid var(--line);
  box-shadow: inset 0 0 18px rgba(0, 229, 255, 0.05);
}

.track__controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

/* ミュート/ソロのチップ（トグル）：ネオンパッド */
.chip {
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-dim);
  background: var(--bg-card-hi);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 14px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: box-shadow 0.15s, color 0.15s, background 0.15s;
}
.chip:active { transform: scale(0.96); }
.chip--on {
  color: #041016;
  background: linear-gradient(135deg, var(--accent), var(--accent-hi));
  border-color: var(--accent-hi);
  box-shadow: var(--glow-cyan);
  text-shadow: none;
}

/* 音量 */
.track__vol {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 100%;
}
.track__vol-label { font-size: 13px; color: var(--text-dim); letter-spacing: 0.06em; flex: 0 0 auto; }
.track__vol-slider { flex: 1; }
.track__vol-slider::-webkit-slider-thumb { width: 24px; height: 24px; }
.track__vol-val {
  font-size: 13px;
  color: var(--accent);
  text-shadow: 0 0 8px rgba(0, 229, 255, 0.35);
  flex: 0 0 auto;
  min-width: 42px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ===== 🎛 調整パネル（テンポ／キー／開始位置） ===== */
.track__fx {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #0a0c18;
  border: 1px solid rgba(255, 45, 149, 0.2);
  border-radius: 12px;
  padding: 14px;
  box-shadow: inset 0 0 18px rgba(255, 45, 149, 0.06);
}
.fx-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.fx-label {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.08em;
  flex: 0 0 auto;
  min-width: 44px;
}
.fx-unit { font-size: 13px; color: var(--text-dim); }
.fx-tempo-slider { flex: 1; }
.fx-tempo-slider::-webkit-slider-thumb {
  width: 24px;
  height: 24px;
  background: radial-gradient(circle at 35% 35%, #ffffff, var(--accent-2) 65%);
  box-shadow: var(--glow-magenta);
}
.fx-tempo-val,
.fx-pitch-val {
  font-size: 14px;
  font-weight: 800;
  color: var(--accent-2-hi);
  text-shadow: 0 0 8px rgba(255, 45, 149, 0.4);
  min-width: 46px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}
.fx-row--bpm { justify-content: flex-start; }
.fx-bpm-info { font-size: 13px; color: var(--text-dim); }
.fx-offset-input {
  width: 72px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  color: var(--text);
  background: var(--bg-card-hi);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 6px;
}
.fx-offset-input:focus {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: var(--glow-magenta);
}
.fx-row--apply .fx-apply { font-size: 15px; padding: 12px; }
.fx-status {
  font-size: 13px;
  line-height: 1.6;
  border-radius: 10px;
  padding: 10px 12px;
  white-space: pre-line;
}
.fx-status.loading { background: var(--bg-card-hi); color: var(--text); }
.fx-status.ok { background: rgba(61, 255, 161, 0.1); color: var(--ok); }
.fx-status.error { background: rgba(255, 77, 109, 0.12); color: var(--danger); }

/* ===== 曲グループ：追加した音源1つ＝1グループ（stemも同じ箱に入る） ===== */
.song-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
  border: 1px solid rgba(255, 45, 149, 0.22);
  border-radius: var(--radius);
  padding: 12px;
  background: rgba(255, 45, 149, 0.03);
}
.song-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}
.song-name {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 60%;
  color: var(--accent-2-hi);
  text-shadow: 0 0 8px rgba(255, 45, 149, 0.3);
}
.song-info {
  font-size: 12px;
  color: var(--accent);
  text-shadow: 0 0 8px rgba(0, 229, 255, 0.35);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.song-fx {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.song-tracks {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
/* コンパクト表示のときは曲グループも詰める */
.track-list.compact .song-group { padding: 10px; gap: 8px; }
.track-list.compact .song-tracks { gap: 8px; }

/* ===== 表示切り替え・全体調整（マスター内） ===== */
.view-row { display: flex; justify-content: flex-end; }
.view-row .chip { font-size: 13px; padding: 8px 12px; }
.g-apply { margin-left: auto; }
.g-apply:not(:disabled) {
  color: #041016;
  background: linear-gradient(135deg, var(--accent), var(--accent-hi));
  border-color: var(--accent-hi);
  box-shadow: var(--glow-cyan);
}

/* ===== コンパクト表示（ミキサー風）：波形と🎛調整を隠して1トラック1行に ===== */
.track-list.compact .track {
  gap: 8px;
  padding: 10px 12px;
}
.track-list.compact .track__waveform { display: none; }
.track-list.compact .track__fx { display: none !important; }
.track-list.compact .track__fx-toggle { display: none; }
.track-list.compact .track__name {
  font-size: 14px;
  padding: 8px 10px;
}
.track-list.compact .icon-btn {
  font-size: 12px;
  padding: 8px 10px;
}
.track-list.compact .track__controls { gap: 6px; flex-wrap: nowrap; }
.track-list.compact .chip {
  font-size: 11px;
  padding: 7px 8px;
  white-space: nowrap;
  flex: 0 0 auto;
}
.track-list.compact .track__vol { flex: 1 1 60px; min-width: 60px; gap: 6px; }
.track-list.compact .track__vol-label { display: none; }
.track-list.compact .track__vol-val { min-width: 34px; font-size: 11px; }
.track-list.compact .track__vol-slider::-webkit-slider-thumb { width: 20px; height: 20px; }

/* ===== 分離の細かさ ===== */
.sep-mode-row {
  display: flex;
  align-items: center;
  gap: 14px;
}
.sep-mode-label {
  font-size: 13px;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  flex: 0 0 auto;
}
.sep-mode-select {
  flex: 1;
  /* 長い曲名でも画面からはみ出さない（flexアイテムのmin-width:autoを打ち消す） */
  min-width: 0;
  max-width: 100%;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  background: var(--bg-card-hi);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
}
.sep-mode-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--glow-cyan);
}

/* ===== 書き出し ===== */
.export-row {
  display: flex;
  gap: 10px;
}
.export-row .icon-btn { flex: 1; padding: 12px; font-size: 15px; }
.export-status {
  font-size: 13px;
  line-height: 1.6;
  border-radius: 10px;
  padding: 10px 12px;
  white-space: pre-line;
}
.export-status.loading { background: var(--bg-card-hi); color: var(--text); }
.export-status.ok { background: rgba(61, 255, 161, 0.1); color: var(--ok); }
.export-status.error { background: rgba(255, 77, 109, 0.12); color: var(--danger); }

/* 分離ステータス */
.track__sep-status {
  font-size: 13px;
  line-height: 1.6;
  border-radius: 10px;
  padding: 10px 12px;
  white-space: pre-line;
}
.track__sep-status.loading { background: var(--bg-card-hi); color: var(--text); }
.track__sep-status.ok { background: rgba(61, 255, 161, 0.1); color: var(--ok); }
.track__sep-status.error { background: rgba(255, 77, 109, 0.12); color: var(--danger); }

/* ===== 画面タブ（🎛 ミキサー ⇄ ✂️ 編集） ===== */
.screen-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
}
.screen-tabs .chip { flex: 1; text-align: center; font-size: 14px; }

/* ===== 編集画面 ===== */
.editor { display: flex; flex-direction: column; gap: 12px; }
.ed-row { display: flex; align-items: center; gap: 10px; }
.ed-wave {
  width: 100%;
  /* CapCut風：縦は低く、横に長く流れる */
  min-height: 72px;
  border-radius: 10px;
  background: #04050c;
  border: 1px solid var(--line);
  box-shadow: inset 0 0 18px rgba(0, 229, 255, 0.05);
  overflow-x: auto; /* 深いズームでも横にはみ出さない */
}
.ed-btns {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.ed-btns .icon-btn { flex: 1 1 auto; padding: 12px 10px; font-size: 13px; }
.ed-btns .fx-offset-input { flex: 0 0 64px; width: 64px; }

.app-footer {
  text-align: center;
  padding: 8px 16px 16px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}