:root {
  --bg: #14121a;
  --bg-deep: #0e0d13;
  --panel: #1b1822;
  --panel-edge: #6f5b28;
  --gold: #d4af37;
  --gold-bright: #f5d67a;
  --champagne: #e8e3b3;
  --ivory: #fcfcfc;
  --muted: #a39f86;
  --hairline: rgba(212, 175, 55, 0.35);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  color: var(--ivory);
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  background:
    radial-gradient(1100px 420px at 50% -80px, rgba(212, 175, 55, 0.14), transparent 70%),
    linear-gradient(180deg, #1a1721 0%, var(--bg) 45%, var(--bg-deep) 100%);
  overflow: hidden;
}

.stage {
  height: 100vh;
  display: grid;
  grid-template-rows: auto auto 1fr auto auto;
  gap: 10px;
  padding: 14px 18px 12px;
}

/* ---------- 顶部品牌与引擎 ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  padding: 4px 2px 10px;
  border-bottom: 1px solid var(--hairline);
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-title {
  margin: 0;
  font-family: Georgia, "Times New Roman", "SimSun", serif;
  font-weight: 400;
  font-size: 26px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  background: linear-gradient(180deg, #f7e7a8 0%, var(--gold) 55%, #8a6c1f 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.orn {
  color: var(--gold);
  font-size: 12px;
  opacity: 0.85;
}

.status-cluster {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-left: auto;
}

.status-line {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}
.status-line .k { color: var(--champagne); opacity: 0.7; margin-right: 6px; }
.status-line span { color: var(--ivory); }

.meter-box {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.meter-box .k { color: var(--champagne); opacity: 0.7; font-size: 12px; }
.meter-track {
  width: 120px;
  height: 8px;
  background: #241f2d;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  overflow: hidden;
}
.meter-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #7bb07b, var(--gold));
  transition: width 0.05s linear, background 0.1s;
}
.meter-fill.hot { background: #e05b5b; }

/* ---------- 按钮 ---------- */
.btn {
  background: linear-gradient(180deg, #2a2533, #1d1a26);
  color: var(--champagne);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  padding: 9px 18px;
  font-size: 14px;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: filter 0.15s, border-color 0.15s;
}
.btn:hover { border-color: var(--gold); filter: brightness(1.15); }
.btn-gold {
  background: linear-gradient(180deg, #f2d67c 0%, var(--gold) 55%, #a9821f 100%);
  color: #1a1407;
  border-color: #8a6c1f;
  font-weight: 600;
}
.btn.active {
  background: linear-gradient(180deg, #f2d67c 0%, var(--gold) 55%, #a9821f 100%);
  color: #1a1407;
  border-color: #8a6c1f;
  font-weight: 600;
}
.btn-outline {
  background: transparent;
  color: var(--gold);
}

.switch {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--muted);
  cursor: pointer;
}
.switch input { width: 16px; height: 16px; accent-color: var(--gold); }

/* ---------- 声道切换 ---------- */
.channel-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
}
.ch-label { font-size: 13px; color: var(--muted); }
.chip {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: border-color 0.15s, filter 0.15s;
}
.chip:hover { border-color: var(--gold); filter: brightness(1.15); }
.chip.active {
  background: linear-gradient(180deg, #f2d67c 0%, var(--gold) 55%, #a9821f 100%);
  color: #1a1407;
  border-color: #8a6c1f;
  font-weight: 600;
}

/* ---------- 传输条 ---------- */
.transport {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 2px 0;
}

/* ---------- 轨道区（伴奏 / 人声 分轨） ---------- */
.tracks {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  background:
    linear-gradient(180deg, rgba(232, 227, 179, 0.03), rgba(0, 0, 0, 0.2)),
    var(--panel);
  box-shadow: inset 0 0 0 1px rgba(232, 227, 179, 0.05);
  overflow: hidden;
}

.track {
  display: flex;
  flex-direction: column;
  flex: 1 1 0;
  min-height: 88px;
  border-bottom: 1px solid var(--hairline);
}
.track:last-of-type { border-bottom: none; }

.track-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 5px 12px;
  background: rgba(232, 227, 179, 0.03);
  border-bottom: 1px solid rgba(212, 175, 55, 0.18);
}

.track-name {
  font-family: Georgia, "Times New Roman", "SimSun", serif;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--champagne);
  white-space: nowrap;
}
.track-name.vocal { color: var(--gold); }

.track-meta {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.track-del {
  margin-left: auto;
  background: transparent;
  border: 1px solid var(--hairline);
  color: var(--muted);
  border-radius: 2px;
  padding: 3px 9px;
  font-size: 11px;
  cursor: pointer;
  white-space: nowrap;
}
.track-del:hover { border-color: #b0555b; color: #ff9aa2; }

.track-canvas {
  flex: 1;
  width: 100%;
  min-height: 60px;
  display: block;
  cursor: crosshair;
  touch-action: none;
}

.timeline-hud {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  padding: 6px 12px;
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--hairline);
  font-variant-numeric: tabular-nums;
}
.hud-item { white-space: nowrap; }
.hud-item output { color: var(--champagne); }
#recStatus { color: var(--gold); }

/* ---------- 效果面板 ---------- */
.fx-panel {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--hairline);
  border-radius: 3px;
  background: linear-gradient(180deg, var(--panel), var(--bg-deep));
  box-shadow: inset 0 0 0 1px rgba(232, 227, 179, 0.04);
  padding: 8px 12px;
  overflow: auto;
}

.fx-col { flex: 1 1 0; min-width: 0; }
.fx-col.fx-vol { flex: 0 0 150px; }

.eq-host {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: flex-start;
}

.fx-divider {
  width: 1px;
  background: linear-gradient(180deg, transparent, var(--hairline), transparent);
}

.panel-title {
  margin: 0 0 6px;
  font-family: Georgia, "Times New Roman", "SimSun", serif;
  font-weight: 400;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--champagne);
  text-transform: uppercase;
}

.band { margin-bottom: 0; }
.band-title {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}
.knob-row { display: flex; gap: 10px; flex-wrap: wrap; }

.preset-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.preset-label { font-size: 12px; color: var(--muted); letter-spacing: 0.1em; }
select {
  background: #241f2d;
  color: var(--champagne);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  padding: 6px 10px;
}

/* ---------- 旋钮 ---------- */
.knob {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  width: 64px;
  cursor: ns-resize;
  user-select: none;
  outline: none;
}
.knob:focus-visible .knob-dial { outline: 1px solid var(--gold-bright); outline-offset: 3px; }

.knob-dial { width: 46px; height: 46px; }
.knob-svg { width: 100%; height: 100%; display: block; }
.knob-rim {
  fill: #100e15;
  stroke: var(--gold);
  stroke-width: 1.4;
}
.knob-face { fill: #17141d; }
.knob-ticks line { stroke: var(--champagne); stroke-width: 1; opacity: 0.5; }
.knob-pointer {
  stroke: var(--gold-bright);
  stroke-width: 2.6;
  stroke-linecap: round;
}
.knob-label { font-size: 11px; color: var(--muted); letter-spacing: 0.05em; }
.knob-value { font-size: 12px; color: var(--champagne); font-variant-numeric: tabular-nums; }

/* ---------- 推子 ---------- */
.fader-row { display: flex; gap: 12px; }
.fader-slot { flex: 1; display: flex; justify-content: center; }

.fader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  width: 48px;
  cursor: ns-resize;
  user-select: none;
  outline: none;
}
.fader:focus-visible .fader-track { outline: 1px solid var(--gold-bright); outline-offset: 3px; }

.fader-track {
  position: relative;
  width: 14px;
  height: 84px;
  background: linear-gradient(180deg, #0e0d13, #241f2d);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  touch-action: none;
}
.fader-track::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 6%;
  bottom: 6%;
  width: 1px;
  transform: translateX(-50%);
  background: repeating-linear-gradient(180deg, rgba(232, 227, 179, 0.4) 0 2px, transparent 2px 6px);
}
.fader-fill {
  position: absolute;
  left: 2px;
  right: 2px;
  bottom: 2px;
  height: 50%;
  background: linear-gradient(180deg, var(--gold-bright), var(--gold));
  opacity: 0.85;
  border-radius: 1px;
}
.fader-thumb {
  position: absolute;
  left: -5px;
  right: -5px;
  bottom: 50%;
  height: 10px;
  transform: translateY(50%);
  background: linear-gradient(180deg, #f2d67c, #a9821f);
  border: 1px solid #6d571d;
  border-radius: 2px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.5);
}
.fader-label { font-size: 11px; color: var(--muted); }
.fader-value { font-size: 12px; color: var(--champagne); font-variant-numeric: tabular-nums; }

/* ---------- 工程栏 ---------- */
.project-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 6px 2px 0;
}
input[type="text"] {
  flex: 1;
  min-width: 160px;
  max-width: 320px;
  background: #1d1a26;
  color: var(--ivory);
  border: 1px solid var(--hairline);
  border-radius: 2px;
  padding: 8px 10px;
  font-size: 13px;
}
.project-status { font-size: 12px; color: var(--muted); }

.proj-list {
  flex-basis: 100%;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  max-height: 46px;
  overflow: auto;
}
.proj-item {
  display: flex;
  gap: 8px;
  align-items: center;
  background: #201c28;
  border: 1px solid var(--hairline);
  border-radius: 2px;
  padding: 5px 8px;
  font-size: 12px;
}
.proj-name { color: var(--ivory); max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.proj-meta { color: var(--muted); }
.proj-item button {
  background: transparent;
  border: 1px solid var(--hairline);
  color: var(--gold);
  border-radius: 2px;
  padding: 3px 8px;
  font-size: 11px;
  cursor: pointer;
}
.proj-item button:hover { border-color: var(--gold); }
.proj-empty { color: var(--muted); font-size: 12px; }

/* ---------- 提示 ---------- */
.warn {
  position: absolute;
  right: 0;
  top: 46px;
  max-width: 360px;
  padding: 8px 10px;
  background: #3a2f14;
  color: var(--gold-bright);
  border: 1px solid #6d571d;
  border-radius: 3px;
  font-size: 12px;
  z-index: 5;
}
.err {
  position: absolute;
  right: 0;
  top: 46px;
  max-width: 400px;
  padding: 8px 10px;
  background: #3a1719;
  color: #ff9aa2;
  border: 1px solid #6d1d22;
  border-radius: 3px;
  font-size: 12px;
  z-index: 6;
}