@import url("tokens.css");

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

html, body {
  height: 100%;
  background: var(--bg-0);
  color: var(--ink-0);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  overflow: hidden;
}

/* ── Layout ── */
#app {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ── Toolbar ── */
#toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-1);
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}
#toolbar label { font-size: var(--fs-label); color: var(--ink-2); }
#toolbar select, #toolbar input[type="number"] {
  background: var(--bg-3);
  color: var(--ink-0);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 3px 8px;
  font-size: var(--fs-label);
  font-family: var(--font-mono);
}
#toolbar input[type="number"] { width: 60px; }
#toolbar button {
  background: var(--bg-3);
  color: var(--ink-0);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 4px 12px;
  cursor: pointer;
  font-size: var(--fs-label);
}
#toolbar button:hover { background: var(--bg-4); }
#toolbar button.accent {
  background: var(--accent);
  color: #111;
  border-color: var(--accent);
  font-weight: 600;
}
#toolbar button.accent:hover { opacity: .85; }

/* ── Editor area ── */
#editor-area {
  display: flex;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* ── Piano keyboard ── */
#piano {
  width: 120px;
  flex-shrink: 0;
  overflow: auto;
  scrollbar-width: none;
  background: var(--bg-1);
  border-right: 1px solid var(--line-strong);
  position: relative;
}
#piano::-webkit-scrollbar { display: none; }
#piano-inner {
  position: relative;
}
#piano-spacer {
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--bg-1);
  border-bottom: 1px solid var(--line-strong);
}
.piano-key {
  height: 14px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 6px;
  font-size: 9px;
  font-family: var(--font-mono);
  color: var(--ink-2);
  border-bottom: 1px solid var(--line);
  user-select: none;
}
.piano-key.white { background: #c8c8c8; color: #333; }
.piano-key.black { background: #2a2a2a; color: #888; }
.piano-key.c-key { border-bottom: 2px solid var(--line-strong); }
.piano-key .oct-label {
  font-weight: 700;
  color: var(--accent-dim);
  margin-right: 4px;
  font-size: 10px;
}

/* ── Grid container ── */
#grid-wrap {
  flex: 1;
  overflow: auto;
  position: relative;
}
#grid-canvas {
  display: block;
}

/* ── Ruler (sticky timeline bar) ── */
#ruler {
  position: sticky;
  top: 0;
  z-index: 5;
  height: 72px;
  flex-shrink: 0;
}
#ruler-canvas {
  display: block;
  cursor: default;
}

/* ── Bottom MML area ── */
#mml-area {
  flex-shrink: 0;
  border-top: 2px solid var(--line-strong);
  background: var(--bg-1);
  padding-bottom: 6px;
}
#mml-rows {
  display: flex;
  flex-direction: column;
}

/* Track tabs */
.mml-tab-bar {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0 var(--space-3);
  border-bottom: 1px solid var(--line);
  background: var(--bg-0);
  min-height: 32px;
}
.mml-tab {
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--ink-2);
  padding: 6px 16px 5px;
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-mono);
  font-weight: 400;
}
.mml-tab:hover { color: var(--ink-0); }
.mml-tab.active {
  color: var(--ink-0);
  font-weight: 700;
  border-bottom-color: currentColor;
}
.mml-tab-add {
  background: transparent;
  border: none;
  color: var(--ink-2);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 15px;
}
.mml-tab-add:hover { color: var(--ink-0); }
.mml-tab-actions {
  margin-left: auto;
  display: flex;
  gap: 4px;
}
.mml-tab-actions button {
  background: transparent;
  border: none;
  color: var(--ink-2);
  cursor: pointer;
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 3px;
}
.mml-tab-actions button:hover {
  background: var(--bg-3);
  color: var(--ink-0);
}

/* Part rows */
.mml-part-row {
  display: flex;
  align-items: center;
  padding: 5px var(--space-3);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  min-height: 32px;
  cursor: pointer;
}
.mml-part-row:last-child { border-bottom: none; }
.mml-part-row:hover { background: rgba(255,255,255,0.04); }
.mml-part-row.active { background: rgba(255,255,255,0.08); }
.mml-part-label {
  flex-shrink: 0;
  min-width: 64px;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 4px;
  text-align: center;
  user-select: none;
}
.mml-part-code {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--ink-1);
  padding: 0 var(--space-3);
  font-size: 13px;
}
.mml-part-chars {
  flex-shrink: 0;
  font-size: 12px;
  min-width: 80px;
  text-align: right;
  white-space: nowrap;
}

/* Rank indicator */
.mml-rank-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px var(--space-3);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-2);
}
.mml-song-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  font-weight: 400;
  font-size: 12px;
}
.mml-song-toggle input { cursor: pointer; }

/* ── Modal ── */
#mml-modal-overlay {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-backdrop {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
}
.modal-box {
  position: relative;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 20px;
  min-width: 480px;
  max-width: 700px;
  z-index: 1;
}
.modal-title {
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 10px;
}
.modal-ta {
  width: 100%;
  height: 100px;
  background: var(--bg-2);
  color: var(--ink-0);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  resize: vertical;
}
.modal-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}
.modal-chars {
  margin-right: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-2);
}
.modal-footer button {
  background: var(--bg-3);
  color: var(--ink-0);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 5px 18px;
  cursor: pointer;
  font-size: 12px;
}
.modal-footer button:hover { background: var(--bg-4); }
.modal-footer .modal-ok {
  background: var(--accent);
  color: #111;
  border-color: var(--accent);
  font-weight: 600;
}
.modal-footer .modal-ok:hover { opacity: .85; }