/*! 365Lab 音频编辑器 - 面板 / 按钮 / 弹层 / 内容区 */

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--panel-2), color-mix(in srgb, var(--panel-2) 80%, var(--bg)));
  color: var(--text);
  font-size: 13.5px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, transform 0.12s ease, background 0.15s ease;
}

.btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn:active:not(:disabled) { transform: translateY(0); box-shadow: none; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.panel input:disabled, .panel select:disabled { opacity: 0.5; cursor: not-allowed; }

.btn.primary {
  background: var(--grad);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 16px rgba(91, 157, 255, 0.35);
}

.btn.primary:hover:not(:disabled) {
  color: #fff;
  filter: brightness(1.08);
  box-shadow: 0 6px 22px rgba(91, 157, 255, 0.5);
}

.btn.primary:disabled { box-shadow: none; }

.btn.ghost { background: transparent; border-color: var(--border-soft); color: var(--muted); }
.btn.ghost:hover:not(:disabled) { background: var(--panel-2); color: var(--accent); }

.btn.active {
  background: var(--grad);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 3px 12px rgba(91, 157, 255, 0.4);
}
.btn.active:hover:not(:disabled) { color: #fff; filter: brightness(1.08); }

.btn.icon { width: 40px; height: 40px; padding: 0; font-size: 15px; flex: 0 0 40px; border-radius: 12px; }
.btn.small { padding: 6px 11px; font-size: 12.5px; }

#btnPlay.playing {
  animation: playPulse 1.6s ease-in-out infinite;
}

@keyframes playPulse {
  0%, 100% { box-shadow: 0 4px 16px rgba(91, 157, 255, 0.35); }
  50% { box-shadow: 0 4px 26px rgba(140, 108, 255, 0.65); }
}

#btnMute.muted { color: var(--error); border-color: color-mix(in srgb, var(--error) 50%, var(--border)); }

/* ---------------- 标签页（分段胶囊） ---------------- */
.tabs {
  display: flex;
  gap: 4px;
  margin-top: 20px;
  padding: 5px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 99px;
  overflow-x: auto;
  scrollbar-width: none;
  position: sticky;
  z-index: 14;
}

.tabs::-webkit-scrollbar { display: none; }

.tab {
  flex: 0 0 auto;
  background: transparent;
  border: none;
  border-radius: 99px;
  padding: 9px 18px;
  color: var(--muted);
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease, box-shadow 0.15s ease;
}

.tab:hover { color: var(--text); }

.tab.active {
  color: #fff;
  background: var(--grad);
  box-shadow: 0 3px 12px rgba(91, 157, 255, 0.4);
}

/* ---------------- 面板与分组 ---------------- */
.panel { display: grid; gap: 14px; margin-top: 16px; animation: panelIn 0.18s ease; }
@keyframes panelIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: none; }
}
.link-btn kbd {
  margin-left: 6px;
  font: inherit;
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 0 5px;
}
.link-btn {
  background: none;
  border: none;
  color: var(--muted);
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
  padding: 3px 10px;
  border-radius: 8px;
  -webkit-tap-highlight-color: transparent;
}
.link-btn:hover { color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent); }
.link-btn:focus-visible { outline: none; box-shadow: var(--ring); }
.btn:active { transform: scale(0.97); }
@media (prefers-reduced-motion: reduce) { .panel { animation: none; } .btn:active { transform: none; } }
.panel[hidden] { display: none; }

.group {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.group::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad);
  opacity: 0.55;
}

.group h2, .group h3 { font-size: var(--fs-title); margin: 0 0 4px; letter-spacing: 0.02em; display: flex; align-items: center; gap: 7px; cursor: pointer; user-select: none; transition: color 0.15s ease; }
.group h2:hover, .group h3:hover { color: var(--accent); }
.group h2::after, .group h3::after { content: '\25BE'; margin-left: auto; color: var(--muted); font-size: 11px; transition: transform 0.18s ease; }
.group h2:focus-visible, .group h3:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 8px; }
.group.collapsed > :not(h3) { display: none; }
.group.collapsed h3::after { transform: rotate(-90deg); }
/* 第49轮：分组标题是折叠开关，但命中矩形只有 19.5px 高（1440 实测）。
   视觉不动，用透明伪元素把命中区上下各扩一点：向上借 1px、向下借 4px（下方本就是 4px margin 空档）→ 24.5px */
.group h2, .group h3 { position: relative; }
.group h2::before, .group h3::before { content: ''; position: absolute; left: 0; right: 0; top: -1px; bottom: -4px; }
.group h2 .gi, .group h3 .gi { font-size: 15px; line-height: 1; }
.tab .ti { margin-right: 7px; font-size: 13px; }
.group .hint { color: var(--muted); font-size: var(--fs-sm); margin: 2px 0 10px; }
.group .hint:last-child { margin-bottom: 0; }

.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.row + .row { margin-top: 10px; }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 128px;
  flex: 1 1 150px;
  font-size: var(--fs-sm);
  color: var(--muted);
}

.field output {
  color: var(--text);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-sm);
  font-weight: 600;
  margin-top: 2px;
}

.field.mini { flex: 0 1 auto; flex-direction: row; align-items: center; gap: 6px; min-width: 0; }
.field.mini input { width: 74px; }
.field.mini input[type='range'] { width: 130px; }

/* 三滑杆同排：收窄字段避免在 400px 侧栏里折行 */
.row.row3 .field { flex: 1 1 96px; min-width: 88px; }
/* 十段图示均衡：两排各 5 段，字段再收窄一档；段名只写频率 */
.row.eq10 .field { flex: 1 1 0; min-width: 0; gap: 3px; font-size: var(--fs-2xs); }
.row.eq10 .field > span { font-variant-numeric: tabular-nums; }
.row.eq10 .field input[type='range'] { width: 100%; margin: 0; }
.row.eq10 .field output { font-size: var(--fs-2xs); margin-top: 0; }
.row.row-fxsub { margin-top: 14px; }
.row-fxsub .hint { margin: 0; }
.row.row2 .field { flex: 1 1 140px; min-width: 110px; }
.field output.fx-clip { color: var(--error); }
/* 取样噪声 + 谱减两参数同排：按钮不伸缩，滑杆收窄，400px 侧栏里不折成三行 */
.row.row-nr .field { flex: 1 1 96px; min-width: 84px; }
.row.row-nr .btn { flex: 0 0 auto; }
.row.row-nrstatus { margin-top: 6px; }
.row.row-nrstatus .hint { font-variant-numeric: tabular-nums; }
/* 谱减进度条：真实百分比 + 已用时 + 取消；不是全屏等待卡，处理时仍能滚动与点按 */
.row.row-nrprog {
  gap: 8px;
  padding: 6px 8px;
  border: 1px solid var(--line, #d9dde3);
  border-radius: var(--radius-sm);
  background: var(--panel-soft, rgba(127, 127, 127, .06));
}
.row.row-nrprog .nrprog-phase { flex: 0 0 auto; font-size: 13px; }
.row.row-nrprog progress {
  flex: 1 1 160px;
  min-width: 120px;
  height: 12px;
  accent-color: var(--accent, #2f6fed);
}
.row.row-nrprog .nrprog-pct,
.row.row-nrprog .nrprog-elapsed {
  flex: 0 0 auto;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.row.row-nrprog .nrprog-elapsed { color: var(--muted, #6b7280); }
.row.row-nrprog .btn { flex: 0 0 auto; }

input[type='number'], input[type='text'], input[type='search'], select {
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 7px 9px;
  font-size: 13px;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input[type='number']:hover, input[type='text']:hover, input[type='search']:hover, select:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--border)); }
input[type='number']:focus, input[type='text']:focus, input[type='search']:focus, select:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }
input[type='number'], input[type='text'], input[type='search'] { caret-color: var(--accent); }
input::placeholder, textarea::placeholder { color: color-mix(in srgb, var(--muted) 85%, transparent); opacity: 1; }

/* ---------------- 滑杆 ---------------- */
input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 22px;
  background: transparent;
  cursor: pointer;
  --range-fill: var(--accent);
}

input[type='range']::-webkit-slider-runnable-track {
  height: 6px;
  border-radius: 99px;
  background: var(--panel-3);
  border: 1px solid var(--border-soft);
}

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  margin-top: -6px;
  border-radius: 50%;
  background: var(--grad);
  border: 2px solid #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  transition: transform 0.12s ease;
}

input[type='range']::-webkit-slider-thumb:hover { transform: scale(1.15); }

input[type='range']::-moz-range-track {
  height: 6px;
  border-radius: 99px;
  background: var(--panel-3);
  border: 1px solid var(--border-soft);
}

input[type='range']::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

/* 触屏设备：加大滑杆热区，便于手指拖动 */
@media (pointer: coarse) {
  input[type='range'] { padding: 8px 0; }
  input[type='range']::-webkit-slider-thumb { width: 24px; height: 24px; margin-top: -10px; }
  input[type='range']::-moz-range-thumb { width: 22px; height: 22px; }
}

input[type='range']:focus-visible { box-shadow: none; }
input[type='range']:focus-visible::-webkit-slider-thumb { box-shadow: var(--ring); }
input[type='range']:focus-visible::-moz-range-thumb { box-shadow: var(--ring); }

.export-pct { color: var(--accent); font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; min-height: 20px; overflow-wrap: anywhere; }

/* ---------------- 录音 ---------------- */
.rec-head { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.rec-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); flex: 0 0 10px; }
.rec-dot.live { background: var(--error); box-shadow: 0 0 0 4px rgba(239, 95, 95, 0.18); animation: pulse 1s ease-in-out infinite; }

@keyframes pulse { 50% { opacity: 0.3; } }

.rec-meter {
  height: 10px;
  background: var(--panel-2);
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  overflow: hidden;
  margin: 12px 0;
}

.rec-meter i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--ok), var(--warn), var(--error)); transition: width 0.08s linear; }
.rec-peak { margin: -6px 0 8px; font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.rec-peak.clip { color: var(--error); font-weight: 650; }
.rec-time { font-variant-numeric: tabular-nums; font-size: 22px; font-weight: 650; letter-spacing: 0.03em; }
.rec-dev { display: flex; align-items: center; gap: 8px; margin-top: 12px; font-size: 13px; color: var(--muted); }
.rec-dev label { flex: 0 0 auto; }
.rec-dev select { flex: 1 1 auto; min-width: 0; min-height: 34px; padding: 4px 8px; font-size: 13px; border: 1px solid var(--border-soft); border-radius: 7px; background: var(--panel); color: var(--text); }
.rec-dev select:disabled { opacity: 0.55; }

/* ---------------- 弹层 ---------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 65;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  background: rgba(5, 8, 14, 0.66);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal[hidden] { display: none; }

.modal-card {
  width: 100%;
  max-width: 600px;
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35), 0 4px 14px rgba(0, 0, 0, 0.2);
  overflow: hidden;
}

.modal.open .modal-card { animation: modalIn 0.22s cubic-bezier(0.2, 0.9, 0.3, 1.15); }

@keyframes modalIn {
  from { opacity: 0; transform: translateY(14px) scale(0.97); }
  to { opacity: 1; transform: none; }
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--border-soft);
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
}

.modal-head h3 { margin: 0; font-size: 15.5px; }
.modal-body { padding: 18px; overflow: auto; }

/* 命令面板 */
.cmd-input {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 14px;
  margin-bottom: 10px;
}
.cmd-input:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }
.cmd-list { list-style: none; margin: 0; padding: 0; max-height: 320px; overflow: auto; display: grid; gap: 4px; }
.cmd-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 13.5px;
}
.cmd-list li.active { background: color-mix(in srgb, var(--accent) 18%, transparent); }
.cmd-list li kbd { color: var(--muted); font-size: 11.5px; white-space: nowrap; }
.cmd-list .cmd-empty { color: var(--muted); cursor: default; justify-content: center; }
.cmd-tip { color: var(--muted); font-size: 12.5px; }
.modal-foot { padding: 13px 18px; border-top: 1px solid var(--border-soft); display: flex; justify-content: flex-end; gap: 8px; }

#helpList, #mouseList { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
#helpList li, #mouseList li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 6px 2px 8px;
  border-bottom: 1px dashed var(--border);
  font-size: 13.5px;
}

#helpList li:last-child, #mouseList li:last-child { border-bottom: none; }
.modal-sub { margin: 18px 0 10px; font-size: 14px; color: var(--muted); font-weight: 600; }

kbd {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: nowrap;
}

/* ---------------- 内容区 ---------------- */
.section { padding: 40px 0; border-top: 1px solid var(--border-soft); }

.section h2 { font-size: 22px; margin-bottom: 4px; }

.section h2::before {
  content: '';
  display: block;
  width: 34px;
  height: 4px;
  border-radius: 99px;
  background: var(--grad);
  margin-bottom: 12px;
}

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; margin-top: 18px; counter-reset: feat; }

.card {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  font-size: 13.5px;
  color: var(--muted);
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  box-shadow: var(--shadow);
}

.card h3 { color: var(--text); font-size: 14.5px; margin-bottom: 6px; }

.card::after {
  counter-increment: feat;
  content: counter(feat, decimal-leading-zero);
  position: absolute;
  top: 8px;
  right: 12px;
  font-size: 26px;
  font-weight: 800;
  line-height: 1;
  color: var(--accent);
  opacity: 0.14;
  font-variant-numeric: tabular-nums;
}

/* ---------------- FAQ ---------------- */
.faq { margin-top: 18px; }

.faq details {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 10px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.faq details:hover { border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); }
.faq details[open] { border-color: color-mix(in srgb, var(--accent) 60%, var(--border)); box-shadow: var(--shadow-sm); }

.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  user-select: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: '＋';
  color: var(--accent);
  font-size: 15px;
  font-weight: 700;
  transition: transform 0.2s ease;
  flex: 0 0 auto;
}

.faq details[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--muted); font-size: 13.5px; margin: 10px 0 0; }

/* ---------------- 页脚 ---------------- */
footer {
  padding: 26px 0 38px;
  border-top: 1px solid var(--border-soft);
  color: var(--muted);
  font-size: 12.5px;
  background: color-mix(in srgb, var(--bg-soft) 60%, transparent);
}

/* ---------------- 响应式 ---------------- */
@media (prefers-reduced-motion: reduce) {
  .btn:hover:not(:disabled), .card:hover { transform: none; }
  .modal.open .modal-card { animation: none; }
}

/* 多轨混音：轨道总览、轨道行与轻量操作区，随侧栏宽度自适应，不单独设断点 */
.mt-summary { color: var(--muted); font-size: 12.5px; line-height: 1.5; margin: 8px 0; overflow-wrap: anywhere; }
.mt-lanes { display: block; width: 100%; height: auto; border: 1px solid var(--border-soft); border-radius: 8px; background: var(--wave-bg); margin: 6px 0 8px; touch-action: none; cursor: grab; }
/* 拖动中把光标换成抓取态，并关掉横向手势滚动，避免触屏拖轨变成翻页 */
.mt-lanes.mt-lanes-drag { cursor: grabbing; }
.mt-lanes:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
/* 落点数字就地高亮：只在吸附命中时给数字框一圈强调色，不弹任何浮层挡住落点 */
.mt-offset.mt-offset-snap { border-color: var(--accent); box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 28%, transparent); }
.mt-tracks { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.mt-row { display: grid; grid-template-columns: 34px 34px minmax(0, 1fr) 30px; grid-template-areas: "name name name del" "mute solo gain gain"; gap: 5px 6px; align-items: center; padding: 5px 6px; border: 1px solid var(--border-soft); border-radius: 8px; background: color-mix(in srgb, var(--accent) 4%, transparent); }
.mt-row.active { border-color: var(--accent); }
.mt-row.muted { opacity: 0.62; }
.mt-row.solo { box-shadow: inset 3px 0 0 var(--accent); }
.mt-name { grid-area: name; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-align: left; font-size: 12.5px; padding: 4px 8px; border: 1px solid var(--border-soft); border-radius: 7px; background: var(--panel); color: var(--text); cursor: pointer; }
.mt-name:hover { border-color: var(--accent); }
.mt-name-edit { grid-area: name; width: 100%; min-width: 0; font-size: 12.5px; padding: 4px 8px; border: 1px solid var(--accent); border-radius: 7px; background: var(--panel); color: var(--text); }
.mt-name-edit:focus { outline: none; box-shadow: 0 0 0 2px var(--accent-soft, rgba(90, 140, 255, 0.22)); }
.mt-del { grid-area: del; }
.mt-mute { grid-area: mute; }
.mt-solo { grid-area: solo; }
.mt-del, .mt-mute, .mt-solo { min-width: 30px; min-height: 28px; padding: 2px 0; font-size: 12.5px; font-weight: 600; border: 1px solid var(--border-soft); border-radius: 7px; background: var(--panel); color: var(--text); cursor: pointer; }
.mt-mute.on, .mt-solo.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.mt-gain-wrap { grid-area: gain; display: flex; align-items: center; gap: 5px; min-width: 0; }
.mt-gain { flex: 1 1 auto; width: 100%; min-width: 0; accent-color: var(--accent); }
.mt-gainv { flex: 0 0 auto; min-width: 46px; text-align: right; font-size: 11px; font-variant-numeric: tabular-nums; color: var(--muted); white-space: nowrap; }
.mt-extra { grid-column: 1 / -1; display: flex; align-items: center; gap: 6px; min-width: 0; }
.mt-drag { flex: 0 0 auto; width: 24px; min-height: 26px; line-height: 26px; text-align: center; font-size: 12px; color: var(--muted); border: 1px dashed var(--border-soft); border-radius: 6px; cursor: grab; user-select: none; }
.mt-drag:active { cursor: grabbing; }
.mt-row.dragging { opacity: 0.55; }
.mt-row.drop-target { box-shadow: inset 0 2px 0 var(--accent); }
.mt-off-lbl { flex: 0 0 auto; font-size: 12px; color: var(--muted); }
.mt-offset { flex: 1 1 64px; min-width: 0; width: 100%; max-width: 110px; font-size: 12px; padding: 4px 6px; border: 1px solid var(--border-soft); border-radius: 7px; background: var(--panel); color: var(--text); }
.mt-offset:focus { border-color: var(--accent); outline: none; }
.mt-move, .mt-rename, .mt-dup { flex: 0 0 auto; min-width: 28px; min-height: 26px; padding: 0 2px; font-size: 11px; border: 1px solid var(--border-soft); border-radius: 6px; background: var(--panel); color: var(--text); cursor: pointer; }
.mt-move:disabled, .mt-dup:disabled { opacity: 0.4; cursor: default; }
.mt-del:disabled { opacity: 0.45; cursor: default; }
.mt-hist-sep { margin-top: 10px; font-weight: 600; color: var(--text); }

/* ---------------- 响应式（必须放在组件规则之后，同权重下才能覆盖窄屏尺寸） ---------------- */
@media (max-width: 720px) {
  .panel { gap: 10px; }
  .group { padding: 13px; }
  .field { min-width: 100%; }
  /* 只带下拉的字段本来就短（选一个选项就完事），窄屏不必独占整行；文本框仍按上面那条整行 */
  .field:has(select) { min-width: 0; flex: 1 1 calc(50% - 5px); }
  .modal-card { max-width: 100%; }
  .section { padding: 28px 0; }
  .tab { padding: 8px 14px; font-size: 13px; }
  .btn.icon { width: 42px; height: 42px; flex: 0 0 42px; }
  /* 轨道行：按钮与输入框至少 44px，手指点得中；拖动把手是鼠标操作，窄屏隐藏，
     排序改由 44px 的上移/下移完成 */
  .mt-row { grid-template-columns: 44px 44px minmax(0, 1fr) 44px; }
  .mt-name, .mt-name-edit { min-height: 44px; }
  .mt-del, .mt-mute, .mt-solo { min-width: 44px; min-height: 44px; }
  .mt-gain { min-height: 44px; }
  .mt-gainv { min-width: 52px; font-size: 12px; }
  .mt-extra { flex-wrap: wrap; gap: 8px; }
  .mt-drag { display: none; }
  .mt-move, .mt-rename, .mt-dup { min-width: 44px; min-height: 44px; font-size: 14px; }
  .mt-offset { min-height: 44px; max-width: none; flex: 1 1 70px; font-size: 13px; }
  .rec-dev select { min-height: 44px; }
  #exportDup { min-height: 44px; }
  #btnMtXfade, #btnMtLimit { min-height: 44px; }
}