/* Multitrack editor, track headers and the Mixer panel. */

/* ------------------------------------------------------------- layout */

.mt {
  --mt-header-w: var(--mt-header-user, 236px);
  display: grid;
  grid-template-rows: 34px 26px minmax(0, 1fr);
  grid-template-columns: minmax(0, 1fr);
  min-height: 0;
  background: var(--bg-panel);
}

.mt-top,
.mt-ruler-row,
.mt-main {
  display: grid;
  grid-template-columns: var(--mt-header-w) 4px minmax(0, 1fr) 14px;
  min-width: 0;
  min-height: 0;
}

.mt-top {
  padding: 4px 0;
}

.mt-top {
  padding-left: 6px;
}

.mt-top .overview {
  grid-column: 1 / span 3;
}

.mt-head-tools {
  display: flex;
  align-items: center;
  gap: 1px;
  padding: 0 4px;
  min-width: 0;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.mt-modes {
  display: flex;
  gap: 1px;
}

.mt-mode-btn[aria-checked='true'] {
  color: var(--accent-strong);
  background: var(--accent-soft);
}

.mt-splitter-gap {
  border-bottom: 1px solid var(--border);
}

.mt-main {
  padding-bottom: 6px;
}

.mt-headers {
  position: relative;
  overflow: hidden;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
}

.mt-headers-inner {
  will-change: transform;
}

.mt-reorder-line {
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 2px;
  background: var(--accent);
  pointer-events: none;
}

.mt-splitter {
  cursor: col-resize;
  background: var(--bg-panel);
  touch-action: none;
}

.mt-splitter:hover,
.mt-splitter:focus-visible {
  background: var(--accent-soft);
  outline: none;
}

.mt-lanes {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: var(--bg-editor);
  touch-action: none;
  outline: none;
}

.mt-lanes:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -2px;
}

.mt-lanes canvas {
  position: absolute;
  left: 0;
  top: 0;
  pointer-events: none;
}

.mt-vnav {
  position: relative;
  min-height: 0;
  margin: 0 2px 0 3px;
  touch-action: none;
  cursor: default;
}

.mt-vnav-segs {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: 4px;
  background: var(--bg-input);
}

.mt-vnav-seg {
  position: absolute;
  left: 0;
  right: 0;
  border-bottom: 1px solid var(--bg-panel);
  background: color-mix(in srgb, var(--track-color) 45%, var(--bg-input));
}

.mt-vnav-thumb {
  position: absolute;
  left: -1px;
  right: -1px;
  min-height: 10px;
  border: 1px solid var(--text-dim);
  border-radius: 5px;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--bg-panel) 60%, transparent);
  pointer-events: none;
}

.mt-vnav:hover .mt-vnav-thumb {
  border-color: var(--text-strong);
}

/* ------------------------------------------------------- track header */

.mt-th {
  --track-color: var(--accent);
  position: relative;
  display: grid;
  grid-template-columns: 5px minmax(0, 1fr) 9px;
  gap: 0 4px;
  box-sizing: border-box;
  border-bottom: 1px solid var(--border);
  background: var(--bg-track);
  overflow: hidden;
  font-size: var(--fs-sm);
}

.mt-th:nth-child(even) {
  background: var(--bg-track-alt);
}

.mt-th.selected {
  background: var(--bg-active);
}

.mt-th.master {
  background: var(--bg-panel-alt);
}

.mt-th-color {
  width: 5px;
  height: 100%;
  padding: 0;
  border: 0;
  background: var(--track-color);
  cursor: pointer;
}

.mt-th-color:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: -1px;
}

.mt-th-body {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  padding: 4px 0 4px;
}

.mt-th-row {
  display: flex;
  align-items: center;
  gap: 3px;
  min-width: 0;
  min-height: 20px;
}

.mt-th-grip {
  display: inline-flex;
  color: var(--text-faint);
  cursor: grab;
  touch-action: none;
  flex: none;
}

.mt-th.master .mt-th-grip {
  cursor: default;
}

.mt-th-name {
  flex: 1;
  min-width: 0;
  height: 20px;
  padding: 0 4px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text-strong);
  font: inherit;
  font-size: var(--fs-md);
}

.mt-th-name:hover {
  border-color: var(--divider);
}

.mt-th-name:focus {
  border-color: var(--focus);
  background: var(--bg-input);
  outline: none;
}

.mt-th-btns {
  display: flex;
  gap: 2px;
  flex: none;
}

.mt-tb {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  padding: 0;
  border: 1px solid var(--divider);
  border-radius: 3px;
  background: var(--bg-raised);
  color: var(--text-dim);
  font-size: 10px;
  font-weight: 700;
  cursor: pointer;
  flex: none;
}

.mt-tb:hover {
  color: var(--text-strong);
}

/* Buttons set their own display; keep [hidden] hiding them. */
.mt-th [hidden],
.mx-strip [hidden] {
  display: none;
}

.mt-tb-mute[aria-pressed='true'] {
  background: var(--warning);
  border-color: var(--warning);
  color: #111;
}

.mt-tb-solo[aria-pressed='true'] {
  background: var(--meter-yellow);
  border-color: var(--meter-yellow);
  color: #111;
}

.mt-tb-arm[aria-pressed='true'] {
  background: var(--record);
  border-color: var(--record);
  color: #fff;
}

.mt-tb-invert[aria-pressed='true'] {
  background: var(--warning);
  border-color: var(--warning);
  color: #111;
}

.mt-tb-monitor[aria-pressed='true'],
.mt-tb-fx[aria-pressed='true'],
.mt-tb-power[aria-pressed='true'] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent-strong);
}

.mt-th-glyph {
  display: inline-flex;
  color: var(--text-faint);
  flex: none;
}

.mt-th .hot {
  min-width: 2.6em;
  font-size: var(--fs-sm);
}

.knob.automated {
  color: var(--envelope-vol);
}

.mt-th-select {
  height: 20px;
  min-width: 0;
  flex: 1;
  font-size: var(--fs-sm);
}

.mt-th-io {
  flex-direction: column;
  align-items: stretch;
  gap: 2px;
}

.mt-th-io-row {
  display: flex;
  align-items: center;
  gap: 3px;
  min-width: 0;
}

.mt-th-fx {
  flex-wrap: wrap;
  align-items: flex-start;
}

.mt-th-fxlist {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  flex: 1;
  min-width: 0;
}

.mt-th-fxname {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 1px 4px 1px 2px;
  border: 1px solid var(--divider);
  border-radius: 3px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.mt-th-fxname.off .mt-th-fxlabel {
  color: var(--text-faint);
  text-decoration: line-through;
}

.mt-th-fxlabel {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.mt-th-fxpower {
  display: inline-flex;
  flex: none;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent-strong);
  cursor: pointer;
}

.mt-th-fxpower[aria-pressed='false'] {
  color: var(--text-faint);
}

.mt-th-fxname.empty {
  border-color: transparent;
  color: var(--text-faint);
}

.btn.sm {
  height: 20px;
  padding: 0 6px;
  gap: 4px;
  font-size: var(--fs-sm);
}

.mt-th-autotoggle .icon {
  transition: transform 120ms var(--ease);
}

.mt-th-autotoggle.open .icon {
  transform: rotate(90deg);
}

.mt-th-mode {
  flex: 0 1 76px;
}

.mt-th-param {
  flex: 0 1 76px;
}

/* The header mode buttons show one of: inputs/outputs, effects, a send, EQ. */
.mt-th:not([data-mode='fx']) .mt-th-fx,
.mt-th[data-mode]:not([data-mode='io']) .mt-th-io,
.mt-th:not([data-mode='sends']) .mt-th-sendrow,
.mt-th:not([data-mode='eq']) .mt-th-eqrow {
  display: none;
}

.mt-th-sends,
.mt-th-eq {
  display: flex;
  align-items: center;
  gap: 3px;
  min-width: 0;
  flex: 1;
}
.mt-th-sends .mx-send-target {
  flex: 1;
  min-width: 0;
}
.mt-th-sends .dim {
  opacity: 0.45;
}
.mt-th-eq .mx-eq-curve {
  flex: 1;
  min-width: 40px;
  width: auto;
  height: 20px;
}

.mt-th[data-size='xs'] .mt-th-r2,
.mt-th[data-size='xs'] .mt-th-r3,
.mt-th[data-size='xs'] .mt-th-r4,
.mt-th[data-size='sm'] .mt-th-r3,
.mt-th[data-size='sm'] .mt-th-r4,
.mt-th[data-size='md'] .mt-th-r4 {
  display: none;
}

/* With the automation lane open the mode controls always show. */
.mt-th.with-auto .mt-th-r4 {
  display: flex;
}

.mt-th .mt-meter {
  margin: 4px 3px 4px 0;
}

.mt-th-resize {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 5px;
  cursor: row-resize;
  touch-action: none;
}

.mt-th-resize:hover {
  background: var(--accent-soft);
}

.mt-meter {
  position: relative;
  min-width: 0;
  min-height: 0;
}

.mt-meter canvas {
  position: absolute;
  inset: 0;
}

/* --------------------------------------------------------------- mixer */

.mixer-panel {
  display: flex;
  height: 100%;
  min-height: 0;
  overflow: hidden;
  background: var(--bg-panel);
}

.mixer-panel .mx-empty {
  display: none;
  flex: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px;
  text-align: center;
}

.mixer-panel.no-session .mx-empty {
  display: flex;
}

.mixer-panel.no-session .mx-strips,
.mixer-panel.no-session .mx-master {
  display: none;
}

.mx-strips {
  display: flex;
  flex: 1;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
}

.mx-master {
  display: flex;
  flex: none;
  border-left: 2px solid var(--border);
}

.mx-gutter {
  position: relative;
  flex: none;
  width: 20px;
  border-right: 1px solid var(--border);
  background: var(--bg-panel-alt);
}

.mixer-panel.no-session .mx-gutter {
  display: none;
}

.mx-gutter-btn {
  position: absolute;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  padding: 1px 0;
  border: 0;
  background: transparent;
  color: var(--text-faint);
  cursor: pointer;
}

.mx-gutter-btn:hover {
  color: var(--text-strong);
}

.mx-gutter-btn[hidden] {
  display: none;
}

.mx-gutter-btn .icon:first-child {
  transition: transform 120ms var(--ease);
}

.mx-gutter-btn[aria-expanded='false'] .icon:first-child {
  transform: rotate(-90deg);
}

.mx-sec {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

/* A collapsed section leaves a thin bar so the strips keep their rhythm. */
.mixer-panel.mx-hide-io .mx-sec[data-sec='io'] > *,
.mixer-panel.mx-hide-fx .mx-sec[data-sec='fx'] > *,
.mixer-panel.mx-hide-sends .mx-sec[data-sec='sends'] > *,
.mixer-panel.mx-hide-eq .mx-sec[data-sec='eq'] > * {
  display: none;
}

.mixer-panel.mx-hide-io .mx-sec[data-sec='io'],
.mixer-panel.mx-hide-fx .mx-sec[data-sec='fx'],
.mixer-panel.mx-hide-sends .mx-sec[data-sec='sends'],
.mixer-panel.mx-hide-eq .mx-sec[data-sec='eq'] {
  min-height: 26px !important;
  border-bottom: 1px solid var(--divider);
}

.mx-io-top {
  display: flex;
  justify-content: flex-end;
}

.mx-strip .mx-mode {
  flex: none;
}

.mx-strip {
  --track-color: var(--accent);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 92px;
  flex: none;
  min-height: 0;
  padding: 6px 5px 0;
  border-right: 1px solid var(--border);
  background: var(--bg-track);
  font-size: var(--fs-sm);
}

.mx-strip.selected {
  background: var(--bg-active);
}

.mx-strip.master {
  background: var(--bg-panel-alt);
}

.mx-io {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mx-io-row {
  display: flex;
  align-items: center;
  gap: 2px;
  color: var(--text-faint);
}

.mx-select {
  height: 20px;
  min-width: 0;
  flex: 1;
  font-size: var(--fs-xs);
  padding-left: 3px;
}

.mx-fx-head {
  display: flex;
  align-items: center;
  gap: 2px;
  color: var(--text-dim);
  font-size: var(--fs-xs);
}

.mx-fx {
  display: flex;
  flex-direction: column;
  gap: 1px;
  max-height: 71px;
  overflow-y: auto;
  scrollbar-width: thin;
}

.mx-fx-slot {
  display: flex;
  align-items: center;
  flex: none;
  height: 17px;
  padding: 0;
  border: 1px solid var(--divider);
  border-radius: 2px;
  background: var(--bg-input);
  color: var(--text);
  font-size: var(--fs-xs);
  cursor: pointer;
}

.mx-fx-power {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 16px;
  height: 100%;
  padding: 0;
  border: 0;
  border-right: 1px solid var(--divider);
  background: transparent;
  color: var(--accent-strong);
  cursor: pointer;
}

.mx-fx-power[aria-pressed='false'] {
  color: var(--text-faint);
}

.mx-fx-name {
  flex: 1;
  min-width: 0;
  height: 100%;
  padding: 0 4px;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
}

.mx-fx-slot.empty {
  border-style: dashed;
  border-color: var(--divider);
  background: transparent;
}

.mx-io-row.placeholder {
  height: 20px;
}

.mx-fx-slot.off {
  color: var(--text-faint);
  text-decoration: line-through;
}

.mx-panrow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 28px;
}

.mx-pan-text {
  min-width: 2.6em;
  color: var(--hot);
  font-variant-numeric: tabular-nums;
}

.mx-btns {
  display: flex;
  justify-content: center;
  gap: 2px;
}

.mx-level {
  position: relative;
  display: grid;
  grid-template-columns: 22px 22px 12px 16px;
  justify-content: center;
  gap: 3px;
  flex: 1;
  min-height: 90px;
  padding: 9px 0;
}

.mx-scale {
  position: relative;
  color: var(--text-faint);
  font-size: 9px;
  font-variant-numeric: tabular-nums;
}

.mx-mscale {
  position: relative;
  color: var(--text-faint);
  font-size: 8px;
  font-variant-numeric: tabular-nums;
}

.mx-mscale span {
  position: absolute;
  left: 0;
  line-height: 1;
  transform: translateY(50%);
}

.mx-scale span {
  position: absolute;
  right: 0;
  line-height: 1;
}

.mx-fader {
  position: relative;
  cursor: ns-resize;
  touch-action: none;
  outline: none;
  border-radius: 3px;
}

.mx-fader:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.mx-fader-track {
  position: absolute;
  inset: 0;
}

.mx-fader-groove {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 4px;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--meter-bg);
  border: 1px solid var(--border-soft);
}

.mx-thumb {
  position: absolute;
  left: 0;
  right: 0;
  height: 18px;
  border: 1px solid var(--track-color);
  border-radius: 3px;
  background: var(--bg-raised);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--track-color) 35%, transparent);
}

.mx-thumb::after {
  content: '';
  position: absolute;
  left: 3px;
  right: 3px;
  top: 8px;
  height: 2px;
  background: var(--text-dim);
}

.mx-fader.automated .mx-thumb::after {
  background: var(--envelope-vol);
}

.mx-db {
  display: flex;
  justify-content: center;
}

.mx-name {
  margin: 0 -5px;
  padding: 4px 4px 5px;
  border-top: 3px solid var(--track-color);
  background: color-mix(in srgb, var(--track-color) 22%, transparent);
  color: var(--text-strong);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ------------------------------------------------------- effects dialog */

.fx-editor {
  min-width: min(420px, 80vw);
}

.prop-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin-top: 4px;
}

/* ----------------------------------------------------- touch and phone */

@media (pointer: coarse) {
  .mt-tb {
    width: 28px;
    height: 28px;
    font-size: 12px;
  }

  .mt-th-select,
  .mx-select {
    height: 30px;
  }

  .mt-th-row {
    min-height: 30px;
  }

  .mx-strip {
    width: 108px;
  }

  .mt-th-resize {
    height: 10px;
  }

  .mt-splitter {
    width: 8px;
  }
}

[data-layout='phone'] .mt {
  --mt-header-w: 132px;
}

[data-layout='phone'] .mt-th-btns .mt-tb-monitor,
[data-layout='phone'] .mt-th-glyph,
[data-layout='phone'] .mt-head-tools .mt-modes {
  display: none;
}

[data-layout='phone'] .mt-th-r2 .knob {
  display: none;
}

[data-layout='phone'] .mt-th-r1 {
  flex-wrap: wrap;
}

[data-layout='phone'] .mt-th-grip {
  display: none;
}

[data-layout='phone'] .mt-th-name {
  flex-basis: 100%;
}

[data-layout='phone'] .mt-th:not(.with-auto) .mt-th-r4 {
  display: none;
}

/* Narrow headers: the automation parameter wraps under the mode so both stay readable. */
[data-layout='phone'] .mt-th-r4 {
  flex-wrap: wrap;
}

[data-layout='phone'] .mt-th-mode {
  flex: 1 1 0;
  min-width: 0;
}

[data-layout='phone'] .mt-th-param {
  flex: 1 1 100%;
  min-width: 0;
}

/* The knobs are hidden on phones: keep the volume and pan glyphs so the two readouts are told apart. */
[data-layout='phone'] .mt-th-r2 .mt-th-glyph {
  display: inline-flex;
}

/* Mixer sends and track EQ */
.mx-sends,
.mx-eq {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 3px;
  border-top: 1px solid var(--divider);
}
.mx-select.mx-send-sel {
  flex: 0 1 auto;
  width: 44px;
  height: 18px;
  padding: 0 13px 0 3px;
  background-position: calc(100% - 2px) 50%;
}
.mx-send-pre {
  width: auto;
  padding: 0 3px;
  font-size: 9px;
}
.mx-send-knobs {
  display: flex;
  justify-content: space-around;
  align-items: center;
}
.mx-sends .dim {
  opacity: 0.45;
}
.mx-eq-curve {
  display: block;
  width: 80px;
  height: 28px;
  border: 1px solid var(--divider);
  border-radius: 2px;
  cursor: pointer;

/* Remix Properties: sliders between their two ends, and the plan summary. */
.remix-range {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.remix-range input[type='range'] {
  flex: 1 1 auto;
  min-width: 120px;
  /* A taller hit area for fingers; the track stays thin. */
  height: 28px;
}

.remix-status,
.remix-summary {
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.remix-summary.warn {
  color: var(--warning);
}

.remix-dialog .hot {
  min-height: 28px;
}

[data-layout='phone'] .remix-dialog .form-grid {
  grid-template-columns: minmax(0, 1fr);
}