/* ═══════════════════════════════════════════════════════════════
   DAW TO DAWN — Global Stylesheet
   Palette: pure black / white / mid-grey
   ═══════════════════════════════════════════════════════════════ */

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

:root {
  --bg:        #0d0d0d;
  --bg2:       #141414;
  --bg3:       #1c1c1c;
  --bg4:       #242424;
  --border:    #2e2e2e;
  --border2:   #3a3a3a;
  --text:      #f0f0f0;
  --text2:     #999;
  --text3:     #555;
  --accent:    #ffffff;
  --accent-dim:#cccccc;
  --danger:    #ff3b3b;
  --clip-h:    38px;
  --header-h:  48px;
  --ruler-h:   26px;
  --mixer-h:   110px;
  --sidebar-w: 200px;
  --inspector-w: 220px;
  --topbar-h:  50px;
}

html, body {
  height: 100%; width: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', 'SF Pro Display', system-ui, sans-serif;
  font-size: 13px;
  user-select: none;
}

/* ── TOPBAR ──────────────────────────────────────────────────── */
.topbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 16px; gap: 16px;
  z-index: 100;
}
.topbar-left  { flex: 1; display: flex; align-items: center; }
.topbar-center{ flex: 2; display: flex; align-items: center; gap: 10px; justify-content: center; }
.topbar-right { flex: 1; display: flex; align-items: center; gap: 8px; justify-content: flex-end; }

.logo {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 3px;
  color: var(--accent);
}
.logo-accent { color: var(--text3); }

.ctrl-btn {
  background: none;
  border: 1px solid var(--border2);
  color: var(--text);
  width: 32px; height: 32px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s, border-color .15s;
}
.ctrl-btn:hover { background: var(--bg4); border-color: #555; }
.ctrl-btn.active { background: var(--accent); color: var(--bg); border-color: var(--accent); }

.time-display {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 12px;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 2px;
  min-width: 100px;
  text-align: center;
}

.bpm-block, .sig-block {
  display: flex; align-items: center; gap: 5px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
}
.bpm-block label, .sig-block label { color: var(--text3); font-size: 10px; letter-spacing: 1px; }
.bpm-block input {
  background: none; border: none; outline: none;
  color: var(--accent); width: 44px;
  font-size: 14px; text-align: center;
}
.sig-block span { font-size: 14px; color: var(--accent); }

.ai-btn {
  background: var(--accent);
  color: var(--bg);
  border: none;
  border-radius: 6px;
  padding: 6px 14px;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: .5px;
  cursor: pointer;
  transition: opacity .15s;
}
.ai-btn:hover { opacity: .85; }

.icon-btn {
  background: none;
  border: 1px solid var(--border2);
  color: var(--text2);
  width: 32px; height: 32px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 16px;
  display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { color: var(--accent); border-color: #555; }

/* ── WORKSPACE ───────────────────────────────────────────────── */
.workspace {
  position: fixed;
  top: var(--topbar-h);
  left: 0; right: 0;
  bottom: var(--mixer-h);
  display: flex;
  overflow: hidden;
}

/* ── TRACK HEADERS (left sidebar) ───────────────────────────── */
.track-headers {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.headers-top {
  padding: 8px;
  border-bottom: 1px solid var(--border);
}
.add-track-btn {
  width: 100%;
  background: none;
  border: 1px dashed var(--border2);
  color: var(--text2);
  border-radius: 5px;
  padding: 6px;
  cursor: pointer;
  font-size: 12px;
  transition: all .15s;
}
.add-track-btn:hover { border-color: var(--accent); color: var(--accent); }

.track-header {
  height: var(--clip-h);
  display: flex; align-items: center;
  padding: 0 8px;
  border-bottom: 1px solid var(--border);
  gap: 6px;
  cursor: pointer;
  transition: background .1s;
}
.track-header:hover { background: var(--bg3); }
.track-header.selected { background: var(--bg4); }

.track-color-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.track-name {
  flex: 1;
  font-size: 12px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.track-name input {
  background: none; border: none; outline: none;
  color: var(--accent); width: 100%; font-size: 12px;
}
.track-mute, .track-solo {
  background: none;
  border: 1px solid var(--border);
  color: var(--text3);
  width: 20px; height: 20px;
  border-radius: 3px;
  font-size: 9px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}
.track-mute:hover { border-color: var(--danger); color: var(--danger); }
.track-solo:hover { border-color: #f5c518; color: #f5c518; }
.track-mute.active { background: var(--danger); color: white; border-color: var(--danger); }
.track-solo.active { background: #f5c518; color: black; border-color: #f5c518; }

/* ── TIMELINE AREA ───────────────────────────────────────────── */
.timeline-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  background: var(--bg);
}

.ruler {
  height: var(--ruler-h);
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}
.ruler-mark {
  position: absolute;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--border);
}
.ruler-label {
  position: absolute;
  top: 6px;
  font-size: 10px;
  color: var(--text3);
  transform: translateX(-50%);
}

.tracks-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: auto;
  position: relative;
}

.track-lane {
  height: var(--clip-h);
  border-bottom: 1px solid var(--border);
  position: relative;
  background: var(--bg);
  transition: background .1s;
}
.track-lane:nth-child(even) { background: var(--bg2); }
.track-lane.selected { background: rgba(255,255,255,.03); }
.track-lane.drag-over { background: rgba(255,255,255,.07); }

/* Beat grid lines */
.track-lane::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to right,
    transparent 0,
    transparent calc(var(--beat-w, 80px) - 1px),
    var(--border) calc(var(--beat-w, 80px) - 1px),
    var(--border) var(--beat-w, 80px)
  );
  pointer-events: none;
  opacity: .4;
}

/* Playhead */
.playhead {
  position: absolute;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--accent);
  pointer-events: none;
  z-index: 10;
  box-shadow: 0 0 6px rgba(255,255,255,.5);
}

/* CLIPS */
.clip {
  position: absolute;
  top: 3px;
  height: calc(var(--clip-h) - 6px);
  border-radius: 4px;
  overflow: hidden;
  cursor: grab;
  display: flex;
  align-items: center;
  padding: 0 6px;
  min-width: 40px;
  border: 1px solid rgba(255,255,255,.15);
  transition: border-color .1s;
}
.clip:hover { border-color: rgba(255,255,255,.5); }
.clip.selected { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }

.clip-label {
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: rgba(0,0,0,.85);
}
.clip-waveform {
  position: absolute; inset: 0;
  opacity: .35;
}

/* AI VOCAL clip style */
.clip.vocal {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  border-color: rgba(180,180,255,.4);
}
.clip.vocal .clip-label { color: rgba(200,200,255,.9); }

/* DROP OVERLAY */
.drop-overlay {
  position: absolute; inset: 0;
  background: rgba(255,255,255,.06);
  border: 2px dashed rgba(255,255,255,.3);
  border-radius: 8px;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: rgba(255,255,255,.5);
  z-index: 20;
  pointer-events: none;
}
.drop-overlay.active { display: flex; }

/* ── INSPECTOR ───────────────────────────────────────────────── */
.inspector {
  width: var(--inspector-w);
  flex-shrink: 0;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.inspector-title {
  padding: 10px 12px;
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text3);
  border-bottom: 1px solid var(--border);
}
#inspector-body { padding: 12px; }
.inspector-hint { color: var(--text3); font-size: 12px; line-height: 1.5; }

.inspector-prop { margin-bottom: 10px; }
.inspector-prop label { display: block; font-size: 10px; color: var(--text3); margin-bottom: 3px; letter-spacing: 1px; }
.inspector-prop input,
.inspector-prop select {
  width: 100%; background: var(--bg); border: 1px solid var(--border);
  color: var(--text); border-radius: 4px; padding: 5px 8px;
  font-size: 12px; outline: none;
}
.inspector-prop input:focus { border-color: var(--border2); }

/* ── MIXER ───────────────────────────────────────────────────── */
.mixer {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--mixer-h);
  background: var(--bg2);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  z-index: 90;
}
.mixer-label {
  writing-mode: vertical-rl;
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--text3);
  padding: 0 8px;
  border-right: 1px solid var(--border);
  height: 100%;
  display: flex; align-items: center;
}
.mixer-strips { display: flex; height: 100%; }

.mixer-strip {
  width: var(--sidebar-w);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 6px;
  cursor: pointer;
  transition: background .1s;
}
.mixer-strip:hover { background: var(--bg3); }
.mixer-strip.selected { background: var(--bg4); }

.strip-name {
  font-size: 10px;
  color: var(--text2);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 120px;
}
.strip-fader-wrap {
  display: flex; align-items: center; gap: 6px; width: 100%;
}
.strip-fader {
  flex: 1;
  -webkit-appearance: none;
  height: 3px;
  background: var(--border2);
  border-radius: 2px;
  outline: none;
}
.strip-fader::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}
.strip-vol-label {
  font-size: 10px;
  color: var(--text3);
  min-width: 28px;
  text-align: right;
}
.strip-meter {
  display: flex; gap: 2px; height: 14px;
}
.strip-meter-bar {
  width: 4px;
  border-radius: 1px;
  background: var(--border2);
  transition: background .1s;
}
.strip-meter-bar.active { background: var(--accent); }

/* ════════════════════════════════════════════════════════════════
   OVERLAYS / PANELS
   ════════════════════════════════════════════════════════════════ */
.panel-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.75);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  backdrop-filter: blur(4px);
}
.panel-overlay.hidden { display: none; }

/* LYRICS PANEL */
.lyrics-panel {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 10px;
  width: min(900px, 96vw);
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.lyrics-panel-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
.lyrics-title { font-size: 14px; font-weight: 700; letter-spacing: 1px; }
.close-btn {
  background: none; border: none;
  color: var(--text2); font-size: 18px;
  cursor: pointer; padding: 2px 6px;
  border-radius: 4px;
}
.close-btn:hover { color: var(--accent); background: var(--bg3); }

.lyrics-body {
  display: flex; flex: 1; overflow: hidden;
}
.lyrics-col {
  flex: 1;
  display: flex; flex-direction: column;
  padding: 16px;
  border-right: 1px solid var(--border);
  gap: 10px;
  overflow-y: auto;
}
.lyrics-col:last-child { border-right: none; }

.col-label {
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text3);
  display: block;
}
textarea {
  flex: 1;
  min-height: 140px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 10px;
  font-size: 13px;
  line-height: 1.6;
  resize: none;
  outline: none;
  font-family: inherit;
  transition: border-color .15s;
}
textarea:focus { border-color: var(--border2); }

.lyrics-actions {
  display: flex; align-items: flex-end; gap: 8px;
}
.model-select-wrap {
  flex: 1;
  display: flex; flex-direction: column; gap: 4px;
}
.model-select-wrap label { font-size: 10px; color: var(--text3); letter-spacing: 1px; }
.model-select-wrap input {
  background: var(--bg); border: 1px solid var(--border);
  color: var(--text); border-radius: 4px; padding: 6px 8px;
  font-size: 12px; outline: none;
}

.action-btn {
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text);
  border-radius: 6px;
  padding: 8px 16px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
  transition: all .15s;
}
.action-btn:hover { background: var(--bg4); border-color: #555; }
.action-btn.primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  width: 100%;
  text-align: center;
  padding: 10px;
}
.action-btn.primary:hover { opacity: .87; }
.action-btn:disabled { opacity: .4; cursor: not-allowed; }

.polish-status, .vocal-status {
  font-size: 11px;
  color: var(--text3);
  min-height: 16px;
  text-align: center;
}
.status-error { color: var(--danger) !important; }
.status-ok    { color: #5fba7d !important; }
.status-spin::after {
  content: '';
  display: inline-block;
  width: 10px; height: 10px;
  border: 2px solid var(--border2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  margin-left: 6px;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* VOCAL SECTION */
.vocal-section {
  display: flex; flex-direction: column; gap: 8px;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.vocal-params { display: flex; flex-direction: column; gap: 6px; }
.param-row {
  display: flex; align-items: center; gap: 8px;
}
.param-row label { font-size: 11px; color: var(--text2); min-width: 90px; }
.param-row input, .param-row select {
  flex: 1;
  background: var(--bg); border: 1px solid var(--border);
  color: var(--text); border-radius: 4px; padding: 5px 8px;
  font-size: 12px; outline: none;
}

/* SETTINGS PANEL */
.settings-panel {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 10px;
  width: min(420px, 96vw);
}
.settings-body {
  padding: 16px;
  display: flex; flex-direction: column; gap: 12px;
}
.setting-group { display: flex; flex-direction: column; gap: 4px; }
.setting-group label { font-size: 11px; color: var(--text2); }
.setting-group input, .setting-group select {
  background: var(--bg); border: 1px solid var(--border);
  color: var(--text); border-radius: 4px; padding: 6px 8px;
  font-size: 12px; outline: none;
}

/* ── SCROLLBARS ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #555; }