/* ============================================================
   M2V 时间轴编辑器 — 暗色主题
   ============================================================ */

:root {
  --bg:          #1a1a2e;
  --bg-panel:    #16213e;
  --bg-hover:    #0f3460;
  --bg-selected: #533483;
  --text:        #e0e0e0;
  --text-dim:    #888;
  --accent:      #e94560;
  --accent-soft: #e9456033;
  --border:      #333;
  --word-bg:     #1a3a5c;
  --word-active: #e94560;
  --word-hover:  #2a5a8c;
  --success:     #4caf50;
  --warning:     #ff9800;
}

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

body {
  font-family: "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Header --- */
header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 16px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
header h1 { font-size: 18px; white-space: nowrap; }
#song-select {
  background: var(--bg); color: var(--text);
  border: 1px solid var(--border); padding: 4px 8px;
  border-radius: 4px; font-size: 14px;
}
#toolbar { display: flex; align-items: center; gap: 8px; margin-left: auto; }
#toolbar button {
  background: var(--bg-hover); color: var(--text);
  border: 1px solid var(--border); padding: 4px 12px;
  border-radius: 4px; cursor: pointer; font-size: 13px;
  white-space: nowrap;
}
#toolbar button:hover { background: var(--accent); }
.sep { color: var(--text-dim); }
#status-msg { font-size: 12px; color: var(--text-dim); min-width: 150px; }

/* --- Main layout --- */
main {
  flex: 1; display: flex; flex-direction: column;
  overflow: hidden;
}

/* --- Waveform --- */
#waveform-section {
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  background: #0d1117;
}
#waveform { height: 128px; }
#waveform-controls {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 16px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
}
#waveform-controls button {
  background: var(--bg-hover); color: var(--text);
  border: 1px solid var(--border); padding: 3px 10px;
  border-radius: 4px; cursor: pointer; font-size: 13px;
}
#waveform-controls button:hover { background: var(--accent); }
#time-display { font-family: monospace; font-size: 13px; color: var(--text-dim); }
#zoom-slider { width: 120px; vertical-align: middle; }

/* --- Editor container --- */
#editor-container {
  flex: 1; display: flex;
  overflow: hidden;
}

/* --- Lyrics panel (left) --- */
#lyrics-panel {
  width: 45%;
  overflow-y: auto;
  border-right: 1px solid var(--border);
}
#lyrics-list { padding: 4px 0; }

.lyric-row {
  display: flex; align-items: center;
  padding: 6px 12px;
  cursor: pointer;
  border-bottom: 1px solid #222;
  gap: 8px;
  transition: background 0.1s;
}
.lyric-row:hover { background: var(--bg-hover); }
.lyric-row.selected { background: var(--bg-selected); }
.lyric-row.playing { background: var(--accent-soft); }

.lyric-num {
  font-size: 11px; color: var(--text-dim);
  width: 24px; text-align: right; flex-shrink: 0;
}
/* Line time editing */
.lyric-time-edit {
  display: flex; align-items: center; gap: 3px;
  margin-left: auto; flex-shrink: 0;
}
.time-input {
  font-family: monospace; font-size: 11px;
  color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 3px;
  padding: 2px 4px; width: 80px; text-align: center;
}
.time-input:focus {
  border-color: var(--accent); outline: none;
  background: #1e1e3e;
}
.time-arrow { color: var(--text-dim); font-size: 11px; }
.line-dur {
  font-family: monospace; font-size: 10px;
  color: var(--text-dim); width: 32px; text-align: right;
}
.line-nudge-btn {
  background: var(--bg-hover); color: var(--text);
  border: 1px solid var(--border); border-radius: 3px;
  padding: 1px 5px; cursor: pointer; font-size: 11px;
  line-height: 1;
}
.line-nudge-btn:hover { background: var(--accent); }
.lyric-text { font-size: 15px; flex: 1; white-space: pre-wrap; }

/* Line-level controls in word panel header */
#line-edit-controls {
  display: flex; align-items: center; gap: 6px;
  margin-top: 4px;
}
#line-edit-controls button {
  background: var(--bg-hover); color: var(--text);
  border: 1px solid var(--border); padding: 2px 8px;
  border-radius: 4px; cursor: pointer; font-size: 12px;
  white-space: nowrap;
}
#line-edit-controls button:hover { background: var(--accent); }

/* 逐字卡拉OK高亮 */
.lyric-char {
  transition: color 0.05s, text-shadow 0.05s;
  white-space: pre-wrap;
}
.lyric-char.sung {
  color: var(--accent);
}
.lyric-char.singing {
  color: #ffdd57;
  text-shadow: 0 0 8px #ffdd57aa;
}
.lyric-char.has-syl {
  color: inherit;
}
.lyric-char.has-syl.singing {
  color: inherit;
  text-shadow: none;
}
.lyric-syl {
  transition: color 0.05s, text-shadow 0.05s;
  display: inline;
}
.lyric-syl.sung {
  color: var(--accent);
}
.lyric-syl.singing {
  color: #ffdd57;
  text-shadow: 0 0 8px #ffdd57aa;
}


/* --- Word panel (right) --- */
#word-panel {
  flex: 1; display: flex; flex-direction: column;
  overflow: hidden;
}
#word-panel-header {
  padding: 8px 12px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
#word-timeline {
  flex: 1; overflow-x: auto; overflow-y: hidden;
  padding: 12px;
  position: relative;
}

.word-bar-container {
  display: flex; align-items: stretch;
  height: 48px;
  margin-bottom: 8px;
}
.word-bar {
  display: flex; align-items: center; justify-content: center;
  background: var(--word-bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 16px;
  cursor: pointer;
  position: relative;
  user-select: none;
  min-width: 16px;
  transition: background 0.1s;
}
.word-bar:hover { background: var(--word-hover); }
.word-bar.selected { background: var(--word-active); border-color: #fff; }
.word-bar.bar-singing {
  background: #ffdd57;
  color: #000;
  box-shadow: 0 0 10px #ffdd5788;
}
.word-bar.punct { background: transparent; border: 1px dashed var(--border); font-size: 12px; color: var(--text-dim); min-width: 8px; }

.word-bar .word-dur {
  position: absolute; bottom: 2px;
  font-size: 9px; color: var(--text-dim);
  font-family: monospace;
}

/* drag handle on the right edge — double-click to snap to playhead */
.word-bar .drag-handle {
  position: absolute; right: -6px; top: 0; bottom: 0;
  width: 12px; cursor: col-resize; z-index: 5;
}
.word-bar .drag-handle:hover { background: var(--accent); opacity: 0.75; border-radius: 2px; }
.word-bar .drag-handle:active { background: #ff0; opacity: 0.95; }

/* --- Word controls --- */
#word-controls {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px;
  background: var(--bg-panel);
  border-top: 1px solid var(--border);
}
#word-controls button {
  background: var(--bg-hover); color: var(--text);
  border: 1px solid var(--border); padding: 3px 10px;
  border-radius: 4px; cursor: pointer; font-size: 13px;
}
#word-controls button:hover { background: var(--accent); }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #444; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #666; }