/* ライトテーマ（既定）: Domino風のクラシックなグレーUI */
:root {
  --bg: #d9d7d0;
  --bg-panel: #f0efec;
  --bg-input: #ffffff;
  --bg-hover: #e2e8f2;
  --border: #a5a29a;
  --border-strong: #7d7a72;
  --text: #21201d;
  --text-dim: #6b675e;
  --accent: #2f5fa8;
  --accent-weak: #cfdcf0;
  --danger: #b3261e;
  --warn: #b26a00;
  --backdrop: rgba(60, 60, 60, 0.35);

  /* チャンネルレーンのブロック */
  --block-bg: #d7e3f5;
  --block-border: #4a76b8;
  --block-selected-bg: #ffe3b3;
  --block-selected-border: #d97e00;

  /* ピアノロール（ライト: 明るいキャンバスに淡い緑のグリッド） */
  --roll-bg: #fdfdfa;
  --roll-row-alt: #ebeae4;
  --roll-grid: #d2e0d2;
  --roll-grid-strong: #94b894;
  --roll-bar-line: #4a7a4a;
  --roll-ruler-bg: #e8e6df;
  --roll-ruler-label: #4a4740;
  --roll-c-line: #b4b1a9;
  --roll-selected-col: rgba(47, 95, 168, 0.14);
  --roll-note: #ff9224;
  --roll-note-border: #8f4a00;
  --roll-key-white: #ffffff;
  --roll-key-black: #17140f;
  --roll-key-border: #9a978f;
  --roll-label: #6b675e;
}

[data-theme="dark"] {
  --bg: #1e1f26;
  --bg-panel: #282a33;
  --bg-input: #1a1b21;
  --bg-hover: #343743;
  --border: #3d404d;
  --border-strong: #565a6b;
  --text: #d8dae3;
  --text-dim: #8a8d9c;
  --accent: #4fc1ff;
  --accent-weak: #2a4a63;
  --danger: #ff6b6b;
  --warn: #ffd166;
  --backdrop: rgba(0, 0, 0, 0.55);

  --block-bg: #2a4a63;
  --block-border: #4fc1ff;
  --block-selected-bg: #6a4a14;
  --block-selected-border: #ffb340;

  --roll-bg: #16171c;
  --roll-row-alt: #1f2027;
  --roll-grid: #2a3330;
  --roll-grid-strong: #3f5a50;
  --roll-bar-line: #6fae7a;
  --roll-ruler-bg: #1c1e24;
  --roll-ruler-label: #b7bac6;
  --roll-c-line: #4a4d59;
  --roll-selected-col: rgba(79, 193, 255, 0.12);
  --roll-note: #ffa030;
  --roll-note-border: #8f4a00;
  --roll-key-white: #dad8d2;
  --roll-key-black: #0c0a07;
  --roll-key-border: #55524b;
  --roll-label: #8a8d9c;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic UI", Meiryo, sans-serif;
  font-size: 13px;
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

h2 {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

button {
  background: var(--bg-panel);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.35) inset;
}
[data-theme="dark"] button { box-shadow: none; }
button:hover { background: var(--bg-hover); border-color: var(--border-strong); }
button:active { box-shadow: 0 1px 2px rgba(0, 0, 0, 0.15) inset; }
button:disabled { opacity: 0.45; cursor: default; }

input[type="text"], input[type="number"], select {
  background: var(--bg-input);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 3px 6px;
  font-size: 12px;
}
input:focus, select:focus { outline: 1px solid var(--accent); }

/* ---- TransportBar ---- */
#transport-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
}
#transport-bar .spacer { flex: 1; }
#transport-bar .loop-label { color: var(--text-dim); display: flex; align-items: center; gap: 3px; }
button.playing {
  background: var(--accent-weak);
  border-color: var(--accent);
}

/* ---- レイアウト ---- */
#main-layout { display: flex; flex: 1; min-height: 0; }

#sidebar {
  width: 180px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  padding: 10px;
  overflow-y: auto;
  flex-shrink: 0;
}

.list-section { margin-bottom: 16px; }
.list-section ul { list-style: none; margin: 0; padding: 0; }
.list-section li {
  padding: 4px 6px;
  border-radius: 3px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  border: 1px solid transparent;
}
.list-section li:hover { background: var(--bg-hover); }
.list-section li.selected {
  background: var(--accent-weak);
  border-color: var(--accent);
}
.list-section li .item-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.list-section li .del-btn {
  padding: 0 5px;
  font-size: 11px;
  border: none;
  background: none;
  box-shadow: none;
  color: var(--text-dim);
}
.list-section li .del-btn:hover { color: var(--danger); }
.add-btn { padding: 0 7px; font-size: 12px; }

#editor {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 10px;
  gap: 10px;
  overflow: hidden;
}

/* ---- ChannelLane ---- */
#channel-lane {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px;
  flex-shrink: 0;
}
#lane-rows { display: flex; flex-direction: column; gap: 4px; overflow-x: auto; }
.bpm-label { margin-left: auto; display: flex; align-items: center; gap: 4px; font-weight: normal; }
.bpm-label input { width: 56px; }
.transpose-label { display: flex; align-items: center; gap: 4px; font-weight: normal; }
.transpose-label input { width: 48px; }
.timesig-label { display: flex; align-items: center; gap: 4px; font-weight: normal; }
.lane-row { display: flex; align-items: center; gap: 4px; min-height: 30px; }
.lane-label { width: 34px; color: var(--text-dim); flex-shrink: 0; font-size: 11px; }
.lane-blocks {
  flex: 1;
  display: flex;
  gap: 3px;
  min-height: 28px;
  padding: 2px;
  border: 1px dashed var(--border);
  border-radius: 3px;
  background: var(--bg-input);
}
.lane-blocks.drag-over { border-color: var(--accent); background: var(--bg-hover); }
.lane-block {
  background: var(--block-bg);
  border: 1px solid var(--block-border);
  border-radius: 3px;
  padding: 3px 6px;
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: grab;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}
.lane-block.selected-pattern {
  background: var(--block-selected-bg);
  border-color: var(--block-selected-border);
}
.lane-block .block-del, .lane-block .block-dup { border: none; background: none; box-shadow: none; padding: 0; color: var(--text-dim); font-size: 10px; }
.lane-block .block-del:hover { color: var(--danger); }
.lane-block .block-dup:hover { color: var(--text); }
.lane-row .ch-del { padding: 0 5px; font-size: 11px; }

/* 空白セル（休符）とプレースホルダ */
.lane-cell {
  border-radius: 3px;
  flex-shrink: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 3px 4px;
  font-size: 10px;
}
.lane-cell.empty {
  border: 1px dashed var(--border-strong);
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 5px,
    rgba(128, 128, 128, 0.08) 5px,
    rgba(128, 128, 128, 0.08) 10px
  );
}
.lane-cell.placeholder { border: 1px dashed var(--border); opacity: 0.45; }
.lane-cell:hover { border-color: var(--accent); opacity: 1; }
.lane-cell.drag-over { border-color: var(--accent); background: var(--bg-hover); }
.lane-cell .block-del { border: none; background: none; box-shadow: none; padding: 0; color: var(--text-dim); font-size: 10px; }
.lane-cell .block-del:hover { color: var(--danger); }

/* ---- PianoRoll ---- */
#piano-roll-section { flex: 1; display: flex; flex-direction: column; min-height: 160px; }
#piano-roll-title-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}
#piano-roll-title button { flex: none; padding: 0 7px; }
#piano-roll-hint { margin: 0 0 6px; font-size: 11px; color: var(--text-dim); }
#piano-roll-ruler-wrap {
  overflow: hidden;
  background: var(--roll-ruler-bg);
  border: 1px solid var(--border-strong);
  border-bottom: none;
  border-radius: 4px 4px 0 0;
}
#piano-roll-ruler { display: block; cursor: col-resize; }
#piano-roll-scroll {
  flex: 1;
  min-height: 140px;
  overflow: auto;
  border: 1px solid var(--border-strong);
  border-radius: 0 0 4px 4px;
  background: var(--roll-bg);
}
#piano-roll { display: block; cursor: crosshair; }

/* ---- PropertyPanel ---- */
#property-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  flex-shrink: 0;
}
#property-panel label { display: flex; align-items: center; gap: 4px; color: var(--text-dim); }
#property-panel input[type="number"] { width: 64px; }
#property-panel .mode-toggle { display: flex; gap: 6px; }

/* ---- ダイアログ ---- */
dialog {
  background: var(--bg-panel);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 16px 20px;
  max-width: 480px;
}
dialog::backdrop { background: var(--backdrop); }
dialog h2 { color: var(--text); font-size: 15px; }
dialog h3 { font-size: 13px; margin: 12px 0 4px; }
dialog kbd {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0 4px;
  font-size: 11px;
}
dialog code {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0 3px;
  font-size: 11px;
}
.help-code {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
  margin: 6px 0;
  overflow-x: auto;
  font-size: 11px;
  line-height: 1.5;
}
.help-code code { background: none; border: none; padding: 0; }
.dialog-buttons { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.export-slot { display: flex; align-items: center; gap: 8px; margin: 4px 0; }
.export-slot select { flex: 1; }
#export-validation { margin-top: 10px; font-size: 12px; }
#export-validation .error { color: var(--danger); }
#export-validation .warn { color: var(--warn); }