:root {
  --bg: #0e0f12;
  --bg-2: #15171c;
  --bg-3: #1d2027;
  --fg: #e8e6df;
  --fg-dim: #8a8c93;
  --accent: #c2f04a;
  --accent-2: #6ee7ff;
  --danger: #ff6b6b;
  --border: #262933;
  --step: #2a2e38;
  --step-on: #c2f04a;
  --step-now: #ffffff;
}

* { box-sizing: border-box; }

/* Disable double-tap zoom site-wide on touch devices. `manipulation` permits
   panning + pinch zoom but suppresses the 300ms double-tap-to-zoom gesture,
   which otherwise fires when a user taps the step grid / pads fast. The step
   grid and roll grid still override this with their own touch-action values
   (none / pan-y) where they capture pointer events directly. */
html, body, button, input, select, textarea, label, a,
.sq-step, .sq-pattern__cell, .sq-se__pad {
  touch-action: manipulation;
}
/* Piano roll cells: JS owns the gesture (tap to add, drag right to extend
   length, drag up/down to repitch). `manipulation` here would let the browser
   pan the horizontally-scrollable .sq-roll__grid and cancel the drag mid-gesture,
   so notes never grow past length 1 on touch. Users still scroll horizontally
   by touching the sticky label column or beat ruler row, which keep the
   default touch-action. Same for the velocity lane. */
.sq-roll__cell, .sq-roll__vel-cell { touch-action: none; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  letter-spacing: 0.01em;
}

.sq-transport {
  position: sticky;
  top: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  z-index: 10;
  flex-wrap: wrap;
}

.sq-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-right: 6px;
  color: var(--fg);
  font-weight: 700;
  letter-spacing: 0.02em;
  user-select: none;
}
.sq-logo img { width: 30px; height: 30px; }
.sq-logo span { font-size: 15px; }

.sq-transport .sq-spacer { flex: 1; }
/* Main controls fill the row and wrap internally; the right cluster (metronome +
   clock + master meter) stays beside them, pinned to the right and never bumped
   to its own line. */
.sq-transport__main { flex: 1 1 0; min-width: 0; display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.sq-transport__right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
/* Scale → octave → chord → arp are one keyboard-performance cluster; flex-basis
   100% drops them onto their own line under transport + bpm + swing. */
.sq-transport__kbd-row { flex: 1 0 100%; display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }

.sq-field {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--fg-dim);
}

.sq-field label { text-transform: lowercase; }

input[type="number"],
input[type="text"],
select {
  background: var(--bg-3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 8px;
  font: inherit;
  outline: none;
}

input[type="number"] { width: 64px; }
input[type="range"] { accent-color: var(--accent); }

button {
  background: var(--bg-3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 7px 12px;
  font: inherit;
  cursor: pointer;
  text-transform: lowercase;
}

button:hover { border-color: var(--fg-dim); }
button:active { transform: translateY(1px); }

button.sq-play {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
  font-weight: 600;
  min-width: 68px;
}

#set-share {
  align-self: stretch;
  background: var(--accent-2);
  color: #0b0d10;
  border-color: var(--accent-2);
  font-weight: 600;
  text-transform: none;
  padding: 0 14px;
  min-width: 68px;
}

button.sq-play.is-playing {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

button.sq-btn--ghost { background: transparent; }
button.sq-btn--danger { color: var(--danger); }

.sq-status {
  color: var(--fg-dim);
  font-size: 12px;
  min-width: 120px;
  text-align: right;
}

.sq-meter {
  position: relative;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  flex-shrink: 0;
}
.sq-meter__bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  background: #4ade80;
  transition: width 40ms linear;
}
.sq-meter__bar.is-clip { background: #ef4444; }

.sq-beat-indicator { flex-shrink: 0; display: block; }
.sq-beat-indicator .sq-beat__dot { fill: var(--bg-3); stroke: var(--border); stroke-width: 0.6; transition: fill 40ms linear; }
.sq-beat-indicator .sq-beat__dot.is-beat-strong { stroke: color-mix(in oklab, var(--accent) 55%, var(--border)); }
.sq-beat-indicator .sq-beat__dot.is-now { fill: var(--accent); stroke: var(--accent); }
.sq-beat-indicator .sq-beat__dot.is-beat-strong.is-now { fill: var(--accent-2); stroke: var(--accent-2); }
.sq-beat-indicator .sq-beat__label {
  font-family: ui-monospace, monospace;
  font-size: 11px;
  font-weight: 600;
  fill: var(--fg);
  letter-spacing: 0.02em;
}

#metronome[aria-pressed="true"] { background: var(--accent); color: #0b0d10; border-color: var(--accent); }
#metronome[aria-pressed="true"] .sq-btn-icon { color: #0b0d10; }
/* Palette toggle: full color when on, desaturated when off. */
#note-colors .sq-btn-icon { transition: filter 80ms linear, opacity 80ms linear; }
#note-colors[aria-pressed="false"] .sq-btn-icon { filter: grayscale(1); opacity: 0.55; }

.sq-track__oct { display: inline-flex; gap: 2px; }
.sq-track__oct button { padding: 3px 8px; font-size: 11px; min-width: 44px; }
.sq-track__len-extend { display: inline-flex; gap: 2px; }
.sq-track__len-extend button { padding: 3px 8px; font-size: 11px; min-width: 36px; }
.sq-meter--master { width: 80px; height: 12px; }
.sq-track__meter  { width: 100%; height: 100%; }

/* Vol slider + meter: native slider on top, thin meter strip immediately below.
   Both children stretch to the same width (140px minus any flex-cross-axis trim). */
.sq-vol-combo {
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
  width: 140px;
  gap: 3px;
}
.sq-vol-combo > * { box-sizing: border-box; }
.sq-track__head .sq-field.sq-vol__field .sq-vol-combo input[type="range"] {
  width: 100%;
  margin: 0;
  padding: 0;
  display: block;
}
.sq-vol-combo .sq-track__meter {
  width: 100%;
  height: 4px;
  border-radius: 2px;
  border: 0;
}
.sq-status.is-err { color: var(--danger); }
/* Status shares the keyboard row, taking whatever width is left over at its
   right end. A zero flex-basis is what keeps it there: sized from its content it
   would claim the width of the message and wrap the row instead of ellipsing. */
.sq-status.sq-status--bar {
  flex: 1 1 0;
  box-sizing: border-box;
  text-align: right;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sq-pattern-bar {
  display: flex;
  gap: 10px;
  padding: 8px 16px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.sq-pattern__grid {
  display: grid;
  grid-template-columns: repeat(16, minmax(0, 1fr));
  grid-auto-rows: 22px;
  gap: 3px;
  flex: 1;
}
.sq-pattern__cell {
  background: var(--step);
  border: 1px solid transparent;
  border-radius: 3px;
  cursor: pointer;
  font-size: 10px;
  color: var(--fg-dim);
  display: grid;
  place-items: center;
  padding: 0;
  min-height: 22px;
}
.sq-pattern__cell.is-filled { background: color-mix(in oklab, var(--step-on) 35%, var(--step)); color: var(--fg); }
.sq-pattern__cell.is-active { border-color: var(--step-now); box-shadow: 0 0 0 1px var(--step-now) inset; }
.sq-pattern__cell.is-queued { border-color: var(--accent-2); }
.sq-pattern__cell.is-drag-over { border-color: var(--accent); background: color-mix(in oklab, var(--accent) 20%, var(--step)); }
.sq-repeat__wrap { display: inline-flex; flex-direction: column; align-items: center; gap: 2px; color: var(--fg-dim); font-size: 11px; }
.sq-repeat__wrap input { width: 48px; text-align: center; }
.sq-repeat__wrap select { width: 64px; text-align: center; }
#pattern-mode[aria-pressed="true"] { background: var(--accent-2); color: #0b0d10; border-color: var(--accent-2); }
#pattern-switch[aria-pressed="true"] { background: var(--accent-2); color: #0b0d10; border-color: var(--accent-2); }
#set-save, #set-load, #set-export, #set-import, #set-share { text-transform: none; }
#set-save, #set-load, #set-export, #set-import,
#pattern-dup { padding: 3px 10px; font-size: 12px; min-width: 64px; }
.sq-icon-btn {
  padding: 0;
  min-width: 32px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.sq-icon-btn .sq-btn-icon { display: block; }
/* The dice button doubles as the density control: it fills from the bottom to
   show how full the next roll will be, and drags up/down to set it. */
.track-dice { position: relative; overflow: hidden; touch-action: none; }
.track-dice::before {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: var(--dice-level, 50%);
  background: color-mix(in oklab, var(--accent) 26%, transparent);
  pointer-events: none;
  transition: height 60ms linear;
}
.track-dice .sq-btn-icon { position: relative; }
/* roll + clear: text on desktop, icon on mobile (media block flips these) */
.sq-track__roll .sq-btn-icon,
.sq-track__clear .sq-btn-icon { display: none; }
.sq-ai__btn { display: inline-flex; align-items: center; gap: 5px; }
.sq-ai__btn .sq-ai__icon { display: inline-flex; color: inherit; }
.sq-ai__btn:disabled .sq-ai__icon { color: var(--fg-dim); }

.sq-dl__btn { display: inline-flex; align-items: center; gap: 5px; }
.sq-dl__btn .sq-dl__icon { display: inline-flex; color: inherit; }
.sq-dl__btn:disabled .sq-dl__icon { color: var(--fg-dim); }
.sq-set__stack, .sq-mode__stack, .sq-len__stack { display: flex; flex-direction: column; gap: 4px; }
.sq-len__stack button { min-width: 36px; }
.sq-mode__row { display: flex; gap: 4px; }

.sq-master__prompt {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border);
}
.sq-master__prompt input[type="text"] { flex: 1; }
#master-prompt {
  flex: 1;
  font: inherit;
  resize: none;
  min-height: 32px;
  max-height: 180px;
  overflow-y: auto;
  line-height: 1.35;
  padding: 6px 8px;
  background: var(--bg-3);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 4px;
}
.sq-master__toggle,
.sq-gen__toggle { display: inline-flex; align-items: center; gap: 6px; color: var(--fg-dim); white-space: nowrap; }
.sq-gen__toggle-btn[aria-pressed="true"] {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
}
.sq-gen__toggle-btn[data-state="on"] {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
}
.sq-gen__toggle-btn[data-state="all"] {
  background: #ffa94d;
  color: #0b0d10;
  border-color: #ffa94d;
}

.sq-track__drumkit[aria-pressed="true"] {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
}
#master-prompt-go {
  background: #ff6fa3;
  color: #0b0d10;
  border-color: #ff6fa3;
  font-weight: 600;
}
#master-prompt-go:disabled { opacity: 0.5; cursor: progress; }
#master-variate-go {
  background: #a68bff;
  color: #0b0d10;
  border-color: #a68bff;
  font-weight: 600;
}
#master-variate-go:disabled { opacity: 0.5; cursor: progress; }
.sq-gen__toggle-btn {
  background: transparent;
  color: var(--fg-dim);
  border-color: var(--border);
  font-weight: normal;
}
.sq-gen__count-wrap {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--fg-dim);
}
.sq-gen__count-wrap input { width: 50px; text-align: center; }
.sq-gen__sound-engine { padding: 4px 8px; font-size: 12px; }

main {
  padding: 16px;
  display: grid;
  gap: 12px;
  max-width: 1400px;
  margin: 0 auto;
}

/* Add-track button lives under the track list. */
.sq-add-track-row {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 16px 24px;
}
.sq-add-track-row #add-track { width: 100%; padding: 12px; border-style: dashed; }

.sq-track {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  display: grid;
  gap: 10px;
}

.sq-track.is-muted { opacity: 0.45; }

.sq-track__head {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.sq-track__synth-row {
  flex-basis: 100%;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: stretch;
}
.sq-track__synth-row:empty { display: none; }
.sq-track__synth-row > .sq-param-group[hidden] + .sq-param-group[hidden] { /* no-op, just a placeholder */ }

.sq-track__head .sq-field input[type="range"] { width: 72px; }
.sq-track__head .sq-field label { font-size: 11px; }

.sq-param-group {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: rgba(255,255,255,0.015);
}
.sq-param-group .sq-field input[type="range"] { width: 60px; }
.sq-param-group--timbre { border-color: color-mix(in oklab, var(--accent) 40%, var(--border)); }
.sq-param-group--timbre[hidden] { display: none !important; }
.sq-param-group--osc-mix { border-color: color-mix(in oklab, var(--accent-2) 40%, var(--border)); }
.sq-param-group--osc-mix[hidden] { display: none !important; }
.sq-param-group--osc-mod { border-color: color-mix(in oklab, #d5a6ff 40%, var(--border)); }
.sq-param-group--osc-mod[hidden] { display: none !important; }
.sq-param-group--moog { border-color: color-mix(in oklab, #e0a868 40%, var(--border)); flex-direction: column; align-items: stretch; gap: 4px; }
.sq-param-group--moog[hidden] { display: none !important; }
.sq-param-group--moog .sq-moog__osc-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
}
.sq-param-group--moog .sq-moog__osc-lbl { min-width: 32px; color: var(--fg-dim); }
.sq-param-group--moog .sq-moog__freq { display: inline-flex; align-items: center; gap: 4px; }
.sq-param-group--moog .sq-moog__freq input[type="range"] { width: 70px; }
.sq-param-group--moog select { padding: 2px 6px; font-size: 11px; }
.sq-param-group--moog .sq-moog__noise { display: flex; align-items: center; gap: 6px; }
.sq-param-group--moog .sq-moog__noise input[type="range"] { width: 70px; }
.sq-param-group--virus { border-color: color-mix(in oklab, #6ec6ff 45%, var(--border)); flex-direction: column; align-items: stretch; gap: 4px; }
.sq-param-group--virus[hidden] { display: none !important; }
.sq-param-group--virus .sq-virus__row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 11px; }
.sq-param-group--virus .sq-virus__lbl { color: var(--fg-dim); min-width: 44px; }
.sq-param-group--virus .sq-virus__f { display: inline-flex; align-items: center; gap: 4px; color: var(--fg-dim); }
.sq-param-group--virus .sq-virus__f input[type="range"] { width: 62px; }
.sq-param-group--virus select { padding: 2px 6px; font-size: 11px; }
/* DX7. The operator rows are a grid rather than a flex row: six operators by
   eight controls only reads as an instrument if the columns line up, which is
   how the machine's own operator page was laid out too. */
.sq-param-group--dx7 { border-color: color-mix(in oklab, #b48cff 45%, var(--border)); flex-direction: column; align-items: stretch; gap: 4px; }
.sq-param-group--dx7[hidden] { display: none !important; }
.sq-param-group--dx7 .sq-dx7__row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 11px; }
.sq-param-group--dx7 .sq-dx7__lbl { color: var(--fg-dim); min-width: 40px; }
.sq-param-group--dx7 .sq-dx7__f { display: inline-flex; align-items: center; gap: 4px; color: var(--fg-dim); }
.sq-param-group--dx7 .sq-dx7__row .sq-dx7__f input[type="range"] { width: 62px; }
.sq-param-group--dx7 select { padding: 2px 6px; font-size: 11px; }
.sq-param-group--dx7 .sq-dx7__alg { color: var(--accent); font-size: 11px; letter-spacing: 0.02em; }
.sq-param-group--dx7 .sq-dx7__alg-fb { color: var(--fg-dim); }
.sq-dx7__ops { display: grid; gap: 2px; overflow-x: auto; }
.sq-dx7__ophead, .sq-dx7__oprow {
  display: grid;
  grid-template-columns: 34px repeat(8, minmax(44px, 1fr)) 58px;
  align-items: center;
  gap: 4px;
  min-width: 520px;
}
.sq-dx7__ophead > span { font-size: 10px; color: var(--fg-dim); text-align: center; opacity: 0.75; }
.sq-dx7__opn { font-size: 10px; color: var(--fg-dim); }
.sq-dx7__oprow.is-carrier .sq-dx7__opn { color: var(--accent); }
.sq-dx7__oprow.is-feedback .sq-dx7__opn::after { content: "↻"; margin-left: 2px; color: var(--accent-2); }
.sq-dx7__ops .sq-dx7__f { display: flex; align-items: center; min-width: 0; }
.sq-dx7__ops .sq-dx7__f input[type="range"] { width: 100%; min-width: 0; }
.sq-dx7__ops select { padding: 1px 4px; font-size: 10px; }
/* Electric guitar: four rows, one per link in the chain — tone, string, amp,
   cab — because that is the order the signal goes in. */
.sq-param-group--guitar { border-color: color-mix(in oklab, #e8a33d 45%, var(--border)); flex-direction: column; align-items: stretch; gap: 4px; }
.sq-param-group--guitar[hidden] { display: none !important; }
.sq-param-group--guitar .sq-guitar__row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 11px; }
.sq-param-group--guitar .sq-guitar__lbl { color: var(--fg-dim); min-width: 44px; }
.sq-param-group--guitar .sq-guitar__f { display: inline-flex; align-items: center; gap: 4px; color: var(--fg-dim); }
.sq-param-group--guitar .sq-guitar__f input[type="range"] { width: 62px; }
.sq-param-group--guitar select { padding: 2px 6px; font-size: 11px; }
.sq-param-group--guitar .sq-guitar__desc { color: var(--fg-dim); font-size: 11px; opacity: 0.85; flex: 1 1 220px; min-width: 0; }
/* Electric bass: hand, dirt, amp — the chain again, one row per link. */
.sq-param-group--bass { border-color: color-mix(in oklab, #8fbf6a 45%, var(--border)); flex-direction: column; align-items: stretch; gap: 4px; }
.sq-param-group--bass[hidden] { display: none !important; }
.sq-param-group--bass .sq-bass__row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 11px; }
.sq-param-group--bass .sq-bass__lbl { color: var(--fg-dim); min-width: 44px; }
.sq-param-group--bass .sq-bass__f { display: inline-flex; align-items: center; gap: 4px; color: var(--fg-dim); }
.sq-param-group--bass .sq-bass__f input[type="range"] { width: 62px; }
.sq-param-group--bass select { padding: 2px 6px; font-size: 11px; }
.sq-param-group--bass .sq-bass__desc { color: var(--fg-dim); font-size: 11px; opacity: 0.85; flex: 1 1 220px; min-width: 0; }
.sq-param-group--tb303 { border-color: color-mix(in oklab, #ff7a4d 45%, var(--border)); }
.sq-param-group--tb303[hidden] { display: none !important; }
.sq-param-group--tb303 select { padding: 2px 6px; font-size: 11px; }
.sq-param-group--granular { border-color: color-mix(in oklab, #ffd35a 45%, var(--border)); flex-direction: column; align-items: stretch; gap: 4px; }
.sq-param-group--granular[hidden] { display: none !important; }
.sq-param-group--granular .sq-gran__row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 11px; }
.sq-param-group--granular .sq-gran__lbl { color: var(--fg-dim); }
.sq-param-group--granular .sq-gran__sync { display: inline-flex; align-items: center; gap: 4px; color: var(--fg-dim); }
.sq-param-group--granular select { padding: 2px 6px; font-size: 11px; }
.sq-param-group--granular .sq-field input[type="range"] { width: 64px; }
.sq-param-group .sq-field[hidden] { display: none !important; }
.sq-filter__group { border-color: color-mix(in oklab, var(--accent-2) 40%, var(--border)); }

.sq-panel__btn-group {
  display: inline-flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.sq-panel__btn-group > button {
  border: none;
  border-radius: 0;
  border-right: 1px solid var(--border);
  padding: 7px 10px;
}
.sq-panel__btn-group > button:last-child { border-right: none; }

.sq-track__mod[aria-pressed="true"] {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
}

.sq-track__mod-panel {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: grid;
  gap: 4px;
}

.sq-track__mod-panel[hidden] { display: none; }

.sq-track__aut-panel {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: grid;
  gap: 6px;
}
.sq-track__aut-panel[hidden] { display: none; }
.sq-aut__empty { color: var(--fg-dim); font-size: 11px; padding: 4px 0; }
.sq-aut__add-row { display: flex; gap: 6px; align-items: center; margin-top: 4px; padding-top: 6px; border-top: 1px solid var(--border); }
.sq-aut__add-btn { font-size: 11px; padding: 4px 10px; }
.sq-aut__add-select { font-size: 11px; padding: 3px 6px; max-width: 220px; }
.sq-aut__lane {
  display: grid;
  grid-template-columns: 120px 28px 1fr 52px 24px;
  gap: 8px;
  align-items: center;
  padding: 2px 0;
}
.sq-aut__lane .sq-aut__label { color: var(--fg-dim); font-size: 11px; text-transform: lowercase; }
.sq-aut__lane.is-active .sq-aut__label { color: var(--accent); font-weight: 600; }
.sq-aut__lane .sq-aut__enable { accent-color: var(--accent); }
.sq-aut__lane .sq-aut__clear { font-size: 10px; padding: 2px 6px; }
.sq-aut__lane .sq-aut__remove {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--fg-dim);
  font-size: 13px;
  line-height: 1;
  width: 22px; height: 22px;
  border-radius: 4px;
  cursor: pointer;
  padding: 0;
}
.sq-aut__lane .sq-aut__remove:hover { color: var(--danger); }
.sq-aut__grid {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 1px;
  height: 96px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 2px;
  cursor: crosshair;
  user-select: none;
}
.sq-aut__step {
  position: relative;
  background: transparent;
  border-radius: 1px;
  overflow: hidden;
}
.sq-aut__step::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: calc(var(--v, 0) * 100%);
  background: var(--accent);
  opacity: 0.85;
}
.sq-aut__lane.is-active .sq-aut__step::after { background: var(--accent); }
.sq-aut__lane:not(.is-active) .sq-aut__step::after { background: var(--fg-dim); opacity: 0.4; }
.sq-aut__step.is-playing { box-shadow: inset 0 0 0 1px var(--accent-2); }

.sq-track__roll-panel {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: grid;
  gap: 6px;
}
.sq-track__roll-panel[hidden] { display: none; }
.sq-track__roll[aria-pressed="true"] {
  background: #8ec7ff;
  color: #0b0d10;
  border-color: #8ec7ff;
}
.sq-roll__head {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: var(--fg-dim);
}
.sq-roll__head .sq-roll__title { color: #8ec7ff; font-weight: 600; }
.sq-roll__head .sq-roll__hint { font-size: 10px; color: var(--fg-dim); font-style: italic; }
.sq-roll__head label { display: inline-flex; align-items: center; gap: 6px; }
.sq-roll__head .sq-roll__oct-btns { display: inline-flex; gap: 4px; }
.sq-roll__head .sq-roll__oct-btns button { padding: 2px 8px; font-size: 11px; }
.sq-roll__head .sq-roll__range { color: var(--fg-dim); font-variant-numeric: tabular-nums; }
.sq-roll__head .sq-roll__transforms { display: inline-flex; gap: 4px; margin-left: auto; }
.sq-roll__head .sq-roll__transforms button {
  padding: 2px 8px;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.sq-roll__grid {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 2px;
  max-height: 320px;
  overflow: auto;
  overscroll-behavior: contain;
  background: var(--bg-2);
  border-radius: 4px;
  padding: 2px;
}
.sq-roll__row {
  display: contents;
}
.sq-roll__label {
  font-size: 10px;
  color: var(--fg-dim);
  padding: 2px 6px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  background: var(--bg-3);
  border-radius: 3px;
  line-height: 1.4;
  user-select: none;
  position: sticky;
  left: 0;
  z-index: 2;
}
.sq-roll__label { color: var(--note-color, var(--fg-dim)); }
.sq-roll__label.is-black { color: var(--note-color, var(--fg-dim)); background: var(--bg-2); }
.sq-roll__label.is-root { color: var(--note-color, #8ec7ff); font-weight: 600; }
.sq-roll__label.is-micro { color: color-mix(in oklab, var(--fg-dim) 60%, transparent); font-size: 9px; padding-inline: 3px; }
.sq-roll__cells {
  display: grid;
  gap: 1px;
  min-width: max-content;
}
.sq-roll__beat-label {
  background: transparent;
  border: none;
}
.sq-roll__beat-row {
  font-size: 10px;
  color: var(--fg-dim);
  font-variant-numeric: tabular-nums;
}
.sq-roll__beat-cell {
  text-align: left;
  padding: 0 2px;
  line-height: 14px;
  min-height: 14px;
}
.sq-roll__beat-cell.is-beat-start { color: var(--fg); }
.sq-roll__cell {
  height: 16px;
  background: var(--bg-3);
  border-radius: 2px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 40ms linear, border-color 40ms linear;
  position: relative;
  font-family: ui-monospace, monospace;
  font-size: 9px;
  line-height: 14px;
  color: #0b0d10;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
}
.sq-roll__cell:hover { background: color-mix(in srgb, var(--row-color, var(--bg-4, #30363d)) 32%, var(--bg-3)); }
.sq-roll__cell.is-on:hover { background: color-mix(in srgb, var(--note-color, var(--accent)) 88%, #fff 12%); }
.sq-roll__cell.is-beat { border-left: 1px solid var(--border); }
.sq-roll__cell.sq-roll__row--black { background: var(--bg-2); }
.sq-roll__cell.sq-roll__row--micro { background: color-mix(in oklab, var(--bg-3) 70%, var(--bg-2)); }
.sq-roll__cell.is-on {
  background: var(--note-color, var(--accent));
  border-color: var(--note-color, var(--accent));
  cursor: move;        /* body of a note: drag moves it (step + pitch) */
}
.sq-roll__cell.is-on.is-edge { cursor: ew-resize; }   /* head / tail: drag resizes */
.sq-roll__cell.is-on.is-tail-zone { cursor: ew-resize; }   /* length-1 note: its right sliver */
/* Multi-step notes: square the adjoining corners and bridge the 1px grid gap so
   a held note reads as a single continuous bar. */
.sq-roll__cell.is-on.is-held {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}
.sq-roll__cell.is-on.is-note-joins-next {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  /* Fill the 1px grid gap to the next column. This has to be a box-shadow on the
     cell itself — a pseudo-element bridge gets clipped by the cell's own
     overflow: hidden (which is there to keep note labels inside their column). */
  box-shadow: 2px 0 0 var(--note-color, var(--accent));
}
.sq-roll__cell.is-on.is-chord { background: var(--note-color, #8ec7ff); border-color: var(--note-color, #8ec7ff); }
.sq-roll__cell.is-on.is-chord.is-note-joins-next { box-shadow: 2px 0 0 var(--note-color, #8ec7ff); }
.sq-roll__cell.is-now { outline: 1px solid #fff6; }

.sq-roll__vel-lane {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 2px;
  background: var(--bg-2);
  border-radius: 4px;
  padding: 2px;
  overflow-x: auto;
  overscroll-behavior: contain;
}
.sq-roll__vel-spacer {
  font-size: 10px;
  color: var(--fg-dim);
  padding: 2px 6px;
  text-align: right;
  background: var(--bg-3);
  border-radius: 3px;
  align-self: end;
  user-select: none;
  position: sticky;
  left: 0;
  z-index: 2;
}
.sq-roll__vel-cells {
  display: grid;
  gap: 1px;
  height: 48px;
  min-width: max-content;
}
.sq-roll__vel-cell {
  background: var(--bg-3);
  border-radius: 2px;
  position: relative;
  cursor: ns-resize;
  overflow: hidden;
}
.sq-roll__vel-cell.is-beat { border-left: 1px solid var(--border); }
.sq-roll__vel-cell.is-on { background: var(--bg-2); }
.sq-roll__vel-bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, var(--accent), #8ec7ff);
  pointer-events: none;
  min-height: 2px;
}
.sq-roll__vel-cell.is-now { outline: 1px solid #fff6; }

.sq-track__fx-panel {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: grid;
  gap: 4px;
}
.sq-track__fx-panel[hidden] { display: none; }
.sq-track__fx[aria-pressed="true"] {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
}

.sq-track__filter-panel {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: grid;
  gap: 4px;
}
.sq-track__filter-panel[hidden] { display: none; }
.sq-track__filter[aria-pressed="true"] {
  background: var(--accent-2);
  color: #0b0d10;
  border-color: var(--accent-2);
}
.sq-track__env-panel {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: grid;
  gap: 4px;
}
.sq-track__env-panel[hidden] { display: none; }
.sq-track__env[aria-pressed="true"] {
  background: #d5a6ff;
  color: #0b0d10;
  border-color: #d5a6ff;
}
.sq-fx__row[data-fx="filter"] .sq-fx__title { color: var(--accent-2); }
.sq-fx__row[data-fx="env"] .sq-fx__title { color: #d5a6ff; }
.sq-fx__row[data-fx="eq"] .sq-fx__title { color: #ffa94d; }

.sq-track__eq-panel {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: grid;
  gap: 4px;
}
.sq-track__eq-panel[hidden] { display: none; }
.sq-track__eq[aria-pressed="true"] {
  background: #ffa94d;
  color: #0b0d10;
  border-color: #ffa94d;
}

.sq-track__comp-panel {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  display: grid;
  gap: 4px;
}
.sq-track__comp-panel[hidden] { display: none; }
.sq-track__comp[aria-pressed="true"] {
  background: #66d9b4;
  color: #0b0d10;
  border-color: #66d9b4;
}
.sq-fx__row[data-fx="comp"] .sq-fx__title { color: #66d9b4; }
.sq-track__comp-panel select.sq-comp__source { min-width: 110px; }

.sq-fx__row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 0;
  flex-wrap: wrap;
}
.sq-fx__row .sq-fx__title {
  color: var(--fg-dim);
  text-transform: lowercase;
  font-size: 11px;
  letter-spacing: 0.08em;
  min-width: 120px;
}
/* Effect names double-click to reset that effect (see wireFxPanel). */
.sq-fx__title.is-resettable { cursor: pointer; }
.sq-fx__title.is-resettable:hover { text-decoration: underline dotted; }
.sq-fx__row[data-fx="vinyl"] .sq-fx__title { color: #c79a74; }
.sq-fx__row[data-fx="cassette"] .sq-fx__title { color: #d9c07a; }
.sq-fx__row[data-fx="fuzz"] .sq-fx__title { color: #ff7a7a; }
.sq-fx__row[data-fx="ringmod"] .sq-fx__title { color: #e0a8ff; }
.sq-fx__row[data-fx="autowah"] .sq-fx__title { color: #ffd166; }
.sq-fx__row[data-fx="chorus"] .sq-fx__title { color: #9fd7ff; }
.sq-fx__row[data-fx="phaser"] .sq-fx__title { color: #b69cff; }
.sq-fx__row[data-fx="flanger"] .sq-fx__title { color: #7adfc8; }
.sq-fx__row[data-fx="pitchshift"] .sq-fx__title { color: #ffaad5; }
.sq-fx__row[data-fx="delay"] .sq-fx__title { color: var(--accent-2); }
.sq-fx__row[data-fx="reverb"] .sq-fx__title { color: var(--accent); }
.sq-fx__ctl {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--fg-dim);
}
.sq-fx__ctl span { min-width: 30px; font-size: 11px; }
.sq-fx__ctl input[type="range"] { width: 88px; }
.sq-fx__sync-wrap { gap: 4px; }

.sq-lfo__row {
  display: grid;
  grid-template-columns: 52px 52px 96px 62px minmax(0, 1fr) minmax(0, 1fr) 28px;
  gap: 10px;
  align-items: center;
  padding: 2px 0;
}

.sq-lfo__sync-wrap { color: var(--fg-dim); display: inline-flex; align-items: center; gap: 4px; }
.sq-lfo__rate-field .sq-lfo__rate,
.sq-lfo__rate-field .sq-lfo__div { flex: 1; }
.sq-lfo__rate-field[data-mode="sync"] .sq-lfo__rate { display: none; }
.sq-lfo__rate-field[data-mode="hz"] .sq-lfo__div { display: none; }

.sq-lfo__row.is-active .sq-lfo__target { color: var(--accent); font-weight: 600; }
.sq-lfo__row .sq-lfo__target { color: var(--fg-dim); text-transform: lowercase; }
.sq-lfo__row .sq-lfo__enable { color: var(--fg-dim); display: inline-flex; align-items: center; gap: 4px; }
.sq-lfo__row .sq-field { width: 100%; }
.sq-lfo__row .sq-field input[type="range"] { flex: 1; width: auto; min-width: 40px; }
.sq-lfo__row .sq-lfo__rate-label,
.sq-lfo__row .sq-lfo__depth-label { color: var(--fg-dim); font-size: 11px; min-width: 56px; }

.sq-track__name {
  width: 120px;
  font-weight: 600;
}

.sq-track__engine { min-width: 160px; }
.sq-track__len { width: 56px; }

.sq-scale__field {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--fg-dim);
}
.sq-scale__toggle { display: inline-flex; align-items: center; gap: 4px; }
#scale-root, #scale-mode { padding: 4px 6px; }

.sq-track__midi {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--fg-dim);
  align-self: flex-start;
}
.sq-track__midi[hidden] { display: none; }
.sq-track__midi select { min-width: 180px; }
.sq-track__midi input[type="number"] { width: 56px; }


.sq-track__save:disabled { opacity: 0.35; cursor: not-allowed; }

/* Pattern lock: this track's sound belongs to the pattern (patternSound.js). */
.sq-track__plock[aria-pressed="true"] {
  background: var(--accent-2);
  color: #0b0d10;
  border-color: var(--accent-2);
}
.sq-track.is-plocked { border-color: var(--accent-2); }

.sq-track__solo[aria-pressed="true"] {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
}
.sq-track.is-soloed { border-color: var(--accent); }

/* The computer keyboard is always active; the targeted track is highlighted. */
.sq-kbd-icon { display: inline-flex; align-items: center; color: var(--fg-dim); cursor: help; }
.sq-kbd-oct { font-size: 11px; color: var(--fg-dim); font-variant-numeric: tabular-nums; min-width: 22px; text-align: center; }
.sq-kbd-chord { display: inline-flex; align-items: center; gap: 5px; font-size: 11px; color: var(--fg-dim); }
.sq-kbd-chord[hidden] { display: none !important; }
#kbd-record:disabled, #kbd-capture:disabled, .sq-track__wav:disabled { opacity: 0.35; cursor: not-allowed; }
.sq-kbd-chord[hidden] { display: none; }
.sq-kbd-chord select { font-size: 11px; padding: 2px 4px; }
/* Arp settings for keyboard chords — only shown while chord mode is on, and the
   rate/range/direction only once arp itself is on (see syncKbdArpUI). */
.sq-kbd-arp, .sq-kbd-arp__opts { display: inline-flex; align-items: center; gap: 5px; }
.sq-kbd-arp[hidden], .sq-kbd-arp__opts[hidden] { display: none !important; }
.sq-kbd-arp__toggle { display: inline-flex; align-items: center; gap: 3px; cursor: pointer; }
.sq-kbd-arp select { font-size: 11px; padding: 2px 4px; }
#kbd-record .sq-btn-icon circle { fill: #e5484d; }
#kbd-record[aria-pressed="true"] { background: #e5484d; border-color: #e5484d; }
#kbd-record[aria-pressed="true"] .sq-btn-icon circle { fill: #fff; }
body.kbd-notes-on .sq-track.is-kbd-active { border-color: var(--accent-2); box-shadow: 0 0 0 1px var(--accent-2) inset; }
body.kbd-recording .sq-track.is-kbd-active { border-color: #e5484d; box-shadow: 0 0 0 1px #e5484d inset; }

.sq-track__glide { width: 70px; }

.sq-steps {
  display: grid;
  grid-template-columns: repeat(var(--count, 16), minmax(0, 1fr));
  /* Floor wrapped rows: a multi-bar pattern where a row contains only a
     single held cell has no aspect-ratio reference, so the row would
     otherwise collapse to the label height. Cells with aspect-ratio:1
     still grow rows past this floor when they need to. */
  grid-auto-rows: minmax(44px, auto);
  gap: 4px;
}

.sq-step {
  aspect-ratio: 1 / 1;
  /* Explicit inline size + start alignment. Without these, Safari resolves
     the square against the 44px grid-auto-rows floor instead of the column
     width (WebKit transfers the block size through aspect-ratio before
     applying inline-axis stretch) — cells render as small squares with big
     gaps and stop tracking the column. Chrome happened to stretch first. */
  width: 100%;
  align-self: start;
  background: var(--step);
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  position: relative;
  min-height: 28px;
  transition: background 60ms linear;
}

/* held cells span multiple columns; stop them from also doubling in height */
.sq-step.is-held { aspect-ratio: var(--hspan, 1) / 1; height: auto; align-self: stretch; }
.sq-steps { align-items: stretch; }

.sq-step.is-on {
  background: var(--note-color, var(--step-on));
  filter: brightness(calc(0.35 + var(--vel, 1) * 0.65));
}
.sq-step.is-beat { outline: 1px solid rgba(255,255,255,0.06); }
.sq-step.is-now { border-color: var(--step-now); box-shadow: 0 0 0 1px var(--step-now) inset; }

.sq-step.is-accent { background: #363b47; }
.sq-step.is-accent.is-on { background: var(--note-color, color-mix(in oklab, var(--step-on) 85%, #fff 15%)); }
.sq-step.is-accent::before {
  content: "";
  position: absolute;
  top: 0; left: 4px; right: 4px;
  height: 3px;
  background: var(--accent-2);
  opacity: 0.75;
  border-radius: 0 0 3px 3px;
}
.sq-step.is-accent.is-on::before { background: #0b0d10; opacity: 0.45; }

.sq-step.is-held {
  background: linear-gradient(
    90deg,
    var(--note-color, var(--step-on)) 0 calc(100% / var(--span, 1) - 2px),
    color-mix(in oklab, var(--note-color, var(--step-on)) 70%, transparent) calc(100% / var(--span, 1))
  );
  position: relative;
}
.sq-step.is-held::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0; right: 0;
  width: 3px;
  background: #0b0d10;
  opacity: 0.3;
  border-radius: 0 4px 4px 0;
}
.sq-step, .sq-step * { user-select: none; -webkit-user-select: none; }
.sq-steps { touch-action: none; }

.sq-step-editor {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  display: grid;
  gap: 8px;
  min-width: 300px;
  max-width: min(94vw, 860px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.55);
  z-index: 100;
}
.sq-step-editor .sq-se__title {
  color: var(--fg-dim);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sq-step-editor .sq-se__field {
  display: grid;
  grid-template-columns: 60px 1fr 84px;
  gap: 10px;
  align-items: center;
}
.sq-step-editor .sq-se__field[hidden] { display: none; }
.sq-step-editor .sq-se__field > label:first-child { white-space: nowrap; }
.sq-step-editor .sq-se__field.sq-se__chord-field {
  grid-template-columns: 60px auto auto 1fr;
}
.sq-step-editor .sq-se__cpx-row { grid-template-columns: 60px 1fr; }
.sq-step-editor .sq-se__cpx-row select { width: 100%; }
.sq-step-editor .sq-se__arp-selects {
  display: flex;
  gap: 8px;
  grid-column: 2 / -1;
}
.sq-step-editor .sq-se__arp-selects select { flex: 1; min-width: 0; }
.sq-step-editor .sq-se__arp-row { grid-template-columns: 60px 1fr; }

.sq-step-editor .sq-se__note-field {
  grid-template-columns: 60px minmax(0, 1fr);
  grid-template-rows: auto auto;
  row-gap: 10px;
}
.sq-step-editor .sq-se__note-field > label:first-child { align-self: start; padding-top: 4px; }
.sq-step-editor .sq-se__note-header {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.sq-step-editor .sq-se__note-header .sq-se__note-label {
  font-size: 11px;
  color: var(--fg-dim);
  letter-spacing: 0.04em;
}
.sq-step-editor .sq-se__oct-pager {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  color: var(--fg-dim);
  letter-spacing: 0.04em;
}
.sq-step-editor .sq-se__oct-pager button {
  padding: 2px 8px;
  font-size: 10px;
}
.sq-step-editor .sq-se__oct-pager button[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
}
.sq-step-editor .sq-se__oct-range { min-width: 60px; text-align: center; }
.sq-step-editor .sq-se__keyboard {
  --se-pad-size: 48px;
  grid-column: 1 / -1;
  grid-row: 2;
  display: grid;
  grid-template-columns: repeat(12, var(--se-pad-size));
  gap: 4px;
  padding: 4px;
  min-width: 0;
  max-width: 100%;
  justify-content: start;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 0;
  overflow-x: auto;
}
.sq-step-editor .sq-se__keyboard .sq-se__pad {
  background: color-mix(in srgb, var(--accent) 18%, var(--bg-3));
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 0;
  font-size: 11px;
  font-family: ui-monospace, monospace;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  line-height: 1;
  min-width: 0;
  min-height: 0;
  aspect-ratio: 1 / 1;
  text-transform: lowercase;
}
.sq-step-editor .sq-se__keyboard .sq-se__pad.is-root {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
}
.sq-step-editor .sq-se__keyboard .sq-se__pad.is-selected {
  background: var(--accent-2);
  color: #0b0d10;
  border-color: var(--accent-2);
}
.sq-step-editor .sq-se__keyboard .sq-se__pad:hover { filter: brightness(1.15); }

.sq-step-editor .sq-se__sample-row { grid-template-columns: 60px 1fr; }
.sq-step-editor .sq-se__sample-ctl {
  display: grid;
  gap: 6px;
  grid-column: 2 / -1;
  font-size: 11px;
  color: var(--fg-dim);
}
.sq-step-editor .sq-se__waveform {
  width: 100%;
  height: 72px;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: ew-resize;
  display: block;
  touch-action: none;
  background: #0e0f12;
}
.sq-step-editor .sq-se__sample-fade {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  font-size: 11px;
  color: var(--fg-dim);
}
.sq-step-editor .sq-se__sample-fade label {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.sq-step-editor .sq-se__sample-fade input[type="range"] { min-width: 0; }

.sq-step-editor .sq-se__sample-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.sq-step-editor .sq-se__smp-info {
  color: var(--fg-dim);
  font-size: 11px;
  flex: 1 1 100%;
}
.sq-step-editor .sq-se__smp-snap select,
.sq-step-editor .sq-se__smp-fit  select { padding: 2px 6px; font-size: 11px; }
.sq-step-editor .sq-se__preview {
  background: var(--accent-2);
  color: #0b0d10;
  border-color: var(--accent-2);
  font-weight: 600;
  padding: 3px 10px;
}
.sq-step-editor .sq-se__chord-field .sq-se__chord-label {
  text-align: right;
  color: var(--fg-dim);
  font-size: 11px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sq-step-editor .sq-se__field label { color: var(--fg-dim); }
.sq-step-editor .sq-se__field input[type="range"] { width: 100%; }
.sq-step-editor .sq-se__field .sq-se__note-label,
.sq-step-editor .sq-se__field .sq-se__vel-label { color: var(--fg); font-size: 12px; text-align: right; }
.sq-step-editor .sq-se__actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 2px;
}
.sq-step-editor .sq-se__arp-wrap,
.sq-step-editor .sq-se__cpx-wrap {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--fg-dim);
  font-size: 11px;
}
.sq-step-editor .sq-se__cpx-wrap input { width: 44px; }
.sq-step-editor .sq-se__arp-wrap input:disabled + * { opacity: 0.4; }

.sq-step-editor .sq-se__close {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
  font-weight: 600;
}

.sq-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: grid;
  place-items: center;
  z-index: 200;
}
.sq-modal {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 22px;
  min-width: 360px;
  max-width: 520px;
  display: grid;
  gap: 12px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.6);
}
.sq-modal__title {
  color: var(--fg);
  font-size: 13px;
}
.sq-modal__input {
  width: 100%;
  font: inherit;
}
.sq-modal__input--multiline {
  min-height: 110px;
  resize: vertical;
  line-height: 1.45;
}
.sq-modal__actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

/* Wavetable editor modal. */
.sq-wt__modal { width: min(94vw, 720px); gap: 10px; }
.sq-wt__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 12px; color: var(--fg-dim); }
.sq-wt__title { color: var(--fg); }
.sq-wt__frames { display: flex; gap: 6px; flex-wrap: wrap; }
.sq-wt__thumb { border: 1px solid var(--border); border-radius: 4px; cursor: pointer; }
.sq-wt__thumb.is-sel { border-color: var(--accent); }
.sq-wt__frames-ctl { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 11px; color: var(--fg-dim); }
.sq-wt__frames-ctl select { font-size: 11px; padding: 2px 4px; }
.sq-wt__canvas { width: 100%; height: auto; border: 1px solid var(--border); border-radius: 6px; background: #0e0f12; touch-action: none; cursor: crosshair; }
.sq-wt__harm { display: flex; align-items: flex-end; justify-content: space-between; gap: 4px; height: 60px; width: 100%; }
.sq-wt__harm-bar { -webkit-appearance: slider-vertical; writing-mode: vertical-lr; flex: 1 1 0; min-width: 0; width: auto; height: 56px; }
.sq-wt__uni { display: flex; align-items: center; gap: 10px; padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 12px; color: var(--fg); }
.sq-wt__uni-wrap { display: flex; align-items: center; gap: 6px; }
.sq-wt__uni select { font-size: 11px; padding: 2px 4px; }
.sq-wt__uni-hint { font-size: 11px; color: var(--fg-dim); }
.sq-wt__scan { display: flex; flex-direction: column; gap: 8px; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; }
.sq-wt__scan-en-wrap { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--fg); cursor: pointer; }
.sq-wt__scan-ctl { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 11px; color: var(--fg-dim); }
.sq-wt__scan-ctl[hidden] { display: none !important; }
.sq-wt__scan-ctl label { display: flex; align-items: center; gap: 4px; }
.sq-wt__scan-ctl select { font-size: 11px; padding: 2px 4px; }
.sq-wt__scan-ctl input[type="range"] { width: 84px; }
.sq-wt__scan-rate-wrap[hidden], .sq-wt__scan-div-wrap[hidden] { display: none !important; }
.sq-wt__hint { font-size: 10px; color: var(--fg-dim); opacity: 0.8; }
.sq-wt__credit { font-size: 10px; color: var(--fg-dim); opacity: 0.65; }
.sq-wt__credit a { color: inherit; text-decoration: underline; }

/* Sample-editor + slicer modals. */
.sq-samp__modal, .sq-slice__modal { width: min(94vw, 720px); gap: 10px; }
.sq-samp__head, .sq-slice__head { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 12px; color: var(--fg-dim); }
.sq-samp__file { font: inherit; color: inherit; background: var(--bg-3); border: 1px solid var(--border); border-radius: 4px; padding: 1px 4px; max-width: 220px; }
.sq-samp__title { color: var(--fg); }
.sq-samp__canvas, .sq-slice__canvas { width: 100%; height: auto; border: 1px solid var(--border); border-radius: 6px; background: #0e0f12; touch-action: none; }
.sq-samp__row, .sq-slice__row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 11px; color: var(--fg-dim); }
.sq-samp__slice-row { border-top: 1px solid var(--border); padding-top: 8px; margin-top: 2px; }
.sq-samp__row select, .sq-slice__row select, .sq-slice__row input[type="number"] { font-size: 11px; padding: 2px 4px; }
.sq-samp__row input[type="range"] { width: 90px; }
.sq-slice__pads { display: flex; flex-wrap: wrap; gap: 4px; max-height: 96px; overflow-y: auto; }
.sq-slice__pad { font-size: 10px; padding: 4px 6px; min-width: 34px; }
.sq-slice__hint { font-size: 10px; color: var(--fg-dim); opacity: 0.8; }

/* Sampler source picker modal: load-file button + bundled sample list. */
.sq-sampler__src-modal { width: min(92vw, 420px); }
/* Attribution line in a source picker (see the wavetable editor's credit). */
.sq-modal__credit { font-size: 10px; color: var(--fg-dim); text-align: center; margin-top: 8px; line-height: 1.5; }
.sq-modal__credit a { color: var(--fg-dim); }
.sq-sampler__src-sep { font-size: 11px; color: var(--fg-dim); text-align: center; }
.sq-sampler__src-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; max-height: 44vh; overflow-y: auto; }
.sq-sampler__src-item { font-size: 11px; padding: 6px 4px; }

/* Granular WAV viewer modal: waveform canvas + live grain bars. */
.sq-gwav__modal {
  width: min(94vw, 720px);
  max-width: 94vw;
  gap: 10px;
}
.sq-gwav__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: var(--fg-dim);
}
.sq-gwav__file { font: inherit; color: inherit; background: var(--bg-3); border: 1px solid var(--border); border-radius: 4px; padding: 1px 4px; max-width: 220px; }
.sq-gwav__title { color: var(--fg); }
.sq-gwav__file { color: var(--fg-dim); }
.sq-gwav__anim { display: inline-flex; align-items: center; gap: 6px; }
.sq-gwav__canvas {
  width: 100%;
  height: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #0e0f12;
}
.sq-gwav__info {
  font: 11px ui-monospace, monospace;
  color: var(--fg-dim);
}
.sq-gwav__hint { font-size: 10px; color: var(--fg-dim); opacity: 0.8; }
.sq-gwav__ctl { display: flex; flex-direction: column; gap: 6px; border-top: 1px solid var(--border); padding-top: 8px; }
.sq-gwav__ctl-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 11px; color: var(--fg-dim); }
.sq-gwav__ctl-row label { display: inline-flex; align-items: center; gap: 4px; }
.sq-gwav__ctl-row select { font-size: 11px; padding: 2px 4px; }
.sq-gwav__ctl-row input[type="range"] { width: 84px; }

/* Audio gate dialog: shown on page load until the user taps to unlock
   audio. Sits above the rest of the UI so it must be the first interaction. */
.sq-audio__gate-overlay { z-index: 300; }
.sq-audio__gate-modal {
  text-align: center;
  padding: 24px 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 380px;
}
.sq-audio__gate-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--fg);
  letter-spacing: 0.02em;
}
.sq-audio__gate-hint {
  font-size: 12px;
  color: var(--fg-dim);
  line-height: 1.5;
  min-height: 3.2em;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 180ms ease;
}
.sq-audio__gate-hint strong { color: var(--fg); }
.sq-audio__gate-btn {
  padding: 14px 18px;
  font-size: 14px;
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
  font-weight: 700;
  min-height: 48px;
}
.sq-audio__gate-btn:disabled { opacity: 0.6; cursor: progress; }
.sq-audio__gate-status {
  font-size: 11px;
  color: var(--fg-dim);
  min-height: 14px;
}

/* Panel modal: hosts a reparented track panel (.sq-track__roll-panel,
   .sq-track__mod-panel, .sq-track__aut-panel) as a centered overlay. The panel keeps
   its existing render + event wiring; only its parent changes. */
.sq-panel__modal {
  width: min(96vw, 1100px);
  max-width: 96vw;
  min-width: 0;
  max-height: 92vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
}
.sq-panel__modal > .sq-track__roll-panel,
.sq-panel__modal > .sq-track__mod-panel,
.sq-panel__modal > .sq-track__aut-panel,
.sq-panel__modal > .sq-track__filter-panel,
.sq-panel__modal > .sq-track__env-panel,
.sq-panel__modal > .sq-track__fx-panel,
.sq-panel__modal > .sq-track__eq-panel,
.sq-panel__modal > .sq-track__comp-panel {
  padding: 0;
  background: transparent;
  border: none;
  border-radius: 0;
  overflow-y: auto;
}
.sq-panel__modal .sq-panel__modal-close {
  align-self: stretch;
  padding: 10px;
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
  font-weight: 600;
  min-height: 40px;
}
.sq-roll__modal .sq-roll__head { flex-wrap: wrap; }
.sq-roll__modal .sq-roll__grid { max-height: calc(80vh - 80px); }
.sq-mod__modal,
.sq-aut__modal {
  width: min(96vw, 820px);
}
.sq-filter__modal,
.sq-env__modal,
.sq-eq__modal,
.sq-comp__modal {
  width: min(96vw, 680px);
}
.sq-fx__modal {
  width: min(96vw, 900px);
}
.sq-mod__modal > .sq-track__mod-panel,
.sq-aut__modal > .sq-track__aut-panel,
.sq-filter__modal > .sq-track__filter-panel,
.sq-env__modal > .sq-track__env-panel,
.sq-fx__modal > .sq-track__fx-panel,
.sq-eq__modal > .sq-track__eq-panel,
.sq-comp__modal > .sq-track__comp-panel {
  max-height: calc(92vh - 80px);
}
.sq-bounce__opts { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.sq-bounce__opts label { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--fg-dim); }
.sq-bounce__opts input[type="number"] { width: 64px; }
.sq-bounce__opts input[type="text"] { width: 220px; }
.sq-bounce__note { color: var(--fg-dim); font-size: 11px; }
.sq-bounce__progress-label { font-size: 11px; color: var(--fg-dim); }
.sq-bounce__progress-bar { position: relative; height: 10px; background: var(--bg-3); border: 1px solid var(--border); border-radius: 4px; overflow: hidden; }
.sq-bounce__progress-fill { position: absolute; inset: 0 auto 0 0; width: 0%; background: var(--accent); transition: width 80ms linear; }
.sq-bounce__progress-status { font-size: 11px; color: var(--fg-dim); }

.sq-patch__list { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; max-height: 40vh; overflow-y: auto; }
.sq-patch__list .sq-patch__row { display: flex; gap: 6px; align-items: stretch; }
.sq-patch__list .sq-patch__load { flex: 1; text-align: left; }
.sq-patch__eng { color: var(--fg-dim); opacity: 0.75; }
.sq-patch__list .sq-patch__del { padding: 4px 10px; }
.sq-patch__empty { color: var(--fg-dim); font-size: 12px; padding: 8px 0; }

.sq-track__mod-panel .sq-mod__ctl-row { display: flex; gap: 16px; padding-bottom: 4px; margin-bottom: 4px; border-bottom: 1px solid var(--border); }
.sq-track__mod-panel .sq-mod__ctl { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: var(--fg-dim); }
.sq-track__mod-panel .sq-mod__ctl input[type="range"] { width: 110px; }
.sq-track__mod-panel .sq-mod__rows { display: grid; gap: 4px; }
.sq-track__mod-panel .sq-mod__add-row { display: flex; gap: 6px; align-items: center; margin-top: 4px; padding-top: 6px; border-top: 1px solid var(--border); }
.sq-track__mod-panel .sq-mod__add-btn { font-size: 11px; padding: 4px 10px; }
.sq-track__mod-panel .sq-mod__add-select { font-size: 11px; padding: 3px 6px; }
.sq-track__mod-panel .sq-lfo__row .sq-lfo__remove {
  padding: 0;
  font-size: 13px;
  line-height: 1;
  color: var(--fg-dim);
  width: 24px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.sq-track__mod-panel .sq-lfo__row .sq-lfo__remove:hover { color: var(--danger); }
.sq-mod__hint { font-size: 11px; color: var(--fg-dim); opacity: 0.8; }

/* A dot beside a parameter's label when something is moving it: green for an
   lfo, blue for a live automation lane, grey for a lane that's switched off.
   Painted by refreshParamIndicators (paramTargets.js). */
[data-motion="mod"] { --motion-dot: var(--accent); }
[data-motion="aut"] { --motion-dot: var(--accent-2); }
[data-motion="off"] { --motion-dot: var(--fg-dim); }
.sq-field[data-motion] > label::after,
.sq-fx__ctl[data-motion] > span::after,
.sq-virus__f[data-motion] > span::after,
.sq-guitar__f[data-motion] > span::after,
.sq-bass__f[data-motion] > span::after,
.sq-dx7__f[data-motion]::after,
label[data-motion]:not(.sq-fx__ctl):not(.sq-virus__f):not(.sq-guitar__f):not(.sq-bass__f):not(.sq-dx7__f)::before {
  content: "";
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--motion-dot);
  vertical-align: middle;
  margin: 0 0 1px 5px;
}
label[data-motion]:not(.sq-fx__ctl):not(.sq-virus__f):not(.sq-guitar__f):not(.sq-bass__f):not(.sq-dx7__f)::before { margin: 0 5px 1px 0; }
/* The dx7's operator cells have no label text of their own (the column heading
   names them), so the dot goes after the slider rather than beside a word. */
.sq-dx7__f[data-motion]::after { flex: 0 0 auto; margin: 0 0 0 3px; }
.sq-field[data-motion="off"] > label,
.sq-fx__ctl[data-motion="off"] > span,
.sq-virus__f[data-motion="off"] > span,
.sq-guitar__f[data-motion="off"] > span,
.sq-bass__f[data-motion="off"] > span { opacity: 0.8; }

/* Right-click a parameter → what is modulating / automating that one control. */
.sq-pmenu__modal { width: min(96vw, 900px); max-width: 96vw; gap: 10px; }
.sq-pmenu__sub { color: var(--fg-dim); }
.sq-pmenu__desc { font-size: 11px; color: var(--fg-dim); line-height: 1.5; max-width: 68ch; }
.sq-pmenu__sec { display: grid; gap: 6px; padding-top: 8px; border-top: 1px solid var(--border); }
.sq-pmenu__sec-head { font-size: 11px; color: var(--fg-dim); text-transform: lowercase; }
.sq-pmenu__key { color: var(--accent); }
.sq-pmenu__body { display: grid; gap: 6px; }
.sq-pmenu__none { font-size: 11px; color: var(--fg-dim); }
.sq-pmenu__blocked { color: var(--fg-dim); opacity: 0.85; font-style: italic; }
.sq-pmenu__add { font-size: 11px; padding: 4px 10px; justify-self: start; }
.sq-pmenu__modal .sq-lfo__row { grid-template-columns: 52px 52px 88px 58px minmax(0, 1fr) minmax(0, 1fr) 28px; }
.sq-pmenu__modal .sq-lfo__row .sq-lfo__rate-label { min-width: 92px; }
.sq-pmenu__modal .sq-lfo__row .sq-lfo__remove {
  padding: 0;
  font-size: 13px;
  line-height: 1;
  color: var(--fg-dim);
  width: 24px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.sq-pmenu__modal .sq-lfo__row .sq-lfo__remove:hover { color: var(--danger); }
.sq-pmenu__modal .sq-aut__grid { height: 120px; }
.sq-modal__ok {
  background: var(--accent);
  color: #0b0d10;
  border-color: var(--accent);
  font-weight: 600;
}
.sq-modal__ok:disabled,
.sq-sound__preview:disabled,
.sq-sound__regen:disabled { opacity: 0.45; cursor: not-allowed; }
.sq-sound__preview {
  background: var(--accent-2);
  color: #0b0d10;
  border-color: var(--accent-2);
  font-weight: 600;
}
.sq-sound__dialog { min-width: 460px; max-width: 640px; }
.sq-sound__dialog-status {
  color: var(--fg-dim);
  font-size: 11px;
  letter-spacing: 0.02em;
  padding: 2px 2px;
}

.sq-step__note {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-size: 10px;
  color: #0b0d10;
  pointer-events: none;
  font-weight: 700;
  opacity: 0.75;
}
.sq-step:not(.is-on) .sq-step__note { display: none; }

/* ============================================================ */
/* mobile / portrait-phone adaptations                          */
/* ------------------------------------------------------------ */
/* Everything below is mobile-only. No horizontal scroll: every */
/* row wraps within the viewport width.                          */
/* ============================================================ */

/* track-extras-toggle: hidden on desktop, visible on mobile */
.sq-mobile-only { display: none !important; }

@media (max-width: 768px) {
  html, body { font-size: 12px; }

  /* respect notch / home indicator on iOS */
  body { padding-bottom: env(safe-area-inset-bottom); }
  .sq-transport { padding-top: max(6px, env(safe-area-inset-top)); }

  /* show mobile-only elements (track "more" toggle etc.) */
  .sq-mobile-only { display: inline-flex !important; }

  /* ---------- TRANSPORT BAR ---------- */
  .sq-transport {
    padding: 6px 8px;
    gap: 6px;
    flex-wrap: wrap;
    align-items: center;
    row-gap: 4px;
  }
  /* Dissolve the desktop wrappers so the order-based mobile layout below applies
     to the controls directly, as it did before the wrappers existed. */
  .sq-transport__main, .sq-transport__right, .sq-transport__kbd-row { display: contents; }
  /* No physical keyboard on mobile — hide the computer-keyboard controls. */
  #kbd-label, #kbd-record, #kbd-capture, #kbd-chord, #kbd-arp, #kbd-icon { display: none !important; }
  .sq-transport .sq-logo { padding-right: 4px; gap: 6px; }
  .sq-transport .sq-logo img { width: 26px; height: 26px; }
  .sq-transport .sq-logo span { display: none; }

  .sq-transport button.sq-play {
    min-width: 64px;
    padding: 9px 14px;
    font-weight: 700;
    font-size: 13px;
  }

  .sq-transport .sq-field { gap: 4px; }
  .sq-transport .sq-field label { font-size: 10px; }
  .sq-transport input[type="number"] { width: 48px; padding: 5px 6px; }
  .sq-transport input[type="range"] { width: 80px; }

  .sq-transport .sq-scale__field {
    flex: 1 1 100%;
    order: 100;
    gap: 4px;
    flex-wrap: wrap;
  }
  .sq-transport .sq-scale__field select { padding: 4px 6px; min-width: 0; flex: 1 1 0; }
  .sq-transport #add-track { order: 99; padding: 6px 10px; }
  .sq-transport .sq-spacer { display: none; }

  .sq-transport .sq-status {
    flex: 1 1 100%;
    order: 200;
    min-width: 0;
    text-align: left;
    font-size: 11px;
  }
  .sq-meter--master { width: 50px; height: 8px; }
  .sq-beat-indicator { width: 30px; height: 30px; }

  /* ---------- PATTERN BAR (mobile = Share + Menu only) ---------- */
  .sq-pattern-bar {
    padding: 6px 8px;
    gap: 6px;
    align-items: center;
  }
  /* Hide every pattern-bar child by default on mobile. Share + Menu opt in. */
  .sq-pattern-bar > * { display: none; }
  .sq-pattern-bar > #set-share {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1 1 0;
    padding: 0 12px;
    min-height: 36px;
  }
  .sq-pattern-bar > #pattern-menu-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1 1 0;
    padding: 0 12px;
    min-height: 36px;
    background: var(--bg-3);
    color: var(--fg);
    border: 1px solid var(--border);
    text-transform: none;
    font-weight: 600;
  }

  /* When the pattern menu modal is open, its children appear inside it.
     Layout matches what the bar used to look like, vertically stacked. */
  .sq-pattern__menu-modal {
    width: 96vw;
    max-width: 96vw;
    min-width: 0;
    max-height: 92vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 14px;
  }
  .sq-pattern__menu-modal #set-save,
  .sq-pattern__menu-modal #set-load,
  .sq-pattern__menu-modal #set-export,
  .sq-pattern__menu-modal #set-import,
  .sq-pattern__menu-modal #bounce-audio,
  .sq-pattern__menu-modal #bounce-track,
  .sq-pattern__menu-modal #pattern-dup {
    padding: 8px 10px;
    font-size: 12px;
    min-width: 0;
    min-height: 36px;
  }
  .sq-pattern__menu-modal .sq-set__stack,
  .sq-pattern__menu-modal .sq-mode__stack { display: flex; flex-direction: row; gap: 6px; }
  .sq-pattern__menu-modal .sq-set__stack > *,
  .sq-pattern__menu-modal .sq-mode__stack > * { flex: 1; }
  .sq-pattern__menu-modal .sq-mode__row { display: flex; gap: 6px; flex: 1; }
  .sq-pattern__menu-modal .sq-mode__row > * { flex: 1; }
  .sq-pattern__menu-modal .sq-repeat__wrap {
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    gap: 6px;
    font-size: 12px;
  }
  .sq-pattern__menu-modal .sq-repeat__wrap input,
  .sq-pattern__menu-modal .sq-repeat__wrap select {
    width: auto;
    flex: 1;
    padding: 6px 8px;
    text-align: center;
  }
  /* mini-row that groups sig + rep + dup */
  .sq-pattern__menu-modal .sq-pattern__menu-row {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
  }
  .sq-pattern__menu-modal .sq-pattern__menu-row > * { flex: 1 1 auto; }

  /* pattern grid inside the modal: wide cells, 8 per row */
  .sq-pattern__menu-modal .sq-pattern__grid {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    grid-auto-rows: 34px;
    gap: 4px;
    width: 100%;
  }
  .sq-pattern__cell { min-height: 28px; font-size: 11px; }
  .sq-pattern__menu-modal .sq-pattern__cell { min-height: 34px; font-size: 12px; }

  .sq-pattern__menu-modal .sq-pattern__menu-close {
    align-self: stretch;
    margin-top: 4px;
    padding: 10px;
    background: var(--accent);
    color: #0b0d10;
    border-color: var(--accent);
    font-weight: 600;
    min-height: 40px;
  }
  .sq-pattern__menu-modal .sq-dl__btn { gap: 6px; }
  .sq-pattern__menu-modal .sq-dl__btn .sq-dl__label { display: inline; }

  /* ---------- MAIN AREA ---------- */
  main { padding: 8px; gap: 8px; }
  .sq-track { padding: 8px; gap: 8px; border-radius: 6px; }

  /* ---------- TRACK HEAD ---------- */
  .sq-track__head { gap: 6px; row-gap: 4px; }
  .sq-track__head .sq-field input[type="range"] { width: 70px; }
  .sq-track__head .sq-field label { font-size: 10px; }

  .sq-track__head .sq-track__name {
    flex: 1 1 0;
    min-width: 0;
    width: auto;
    font-size: 13px;
    padding: 6px 8px;
  }
  .sq-track__head .sq-track__engine {
    flex: 2 1 0;
    min-width: 0;
    max-width: none;
    padding: 6px 6px;
  }
  .sq-track__head .sq-vol__field { flex: 1 1 100%; }
  .sq-track__head .sq-vol-combo { width: 100%; }

  /* len + spd group: keep inline but compact */
  .sq-track__head .sq-field:has(.sq-track__len) { gap: 3px; }
  .sq-track__head .sq-track__len { width: 44px; padding: 4px 4px; }
  .sq-track__head .sq-track__speed { padding: 4px 4px; }
  .sq-track__len-extend { gap: 2px; flex-wrap: nowrap; }
  .sq-track__len-extend button {
    padding: 4px 6px;
    min-width: 32px;
    font-size: 10px;
    min-height: 28px;
  }

  .sq-track__oct { gap: 2px; flex-wrap: nowrap; }
  .sq-track__oct button {
    padding: 4px 6px;
    min-width: 36px;
    font-size: 10px;
    min-height: 28px;
  }

  /* Hide-by-default extras inside the track-head; the "more" button opens
     these in a centered modal instead (.sq-track__menu-modal). The selectors
     are scoped to .sq-track__head so when nodes are reparented into the modal
     they become visible again automatically. The synth-row (harm/timb/morph/
     decay + engine groups) stays inline — it's the primary sound surface on
     mobile; the sound-shaping panel buttons (filter/env/fx/eq/comp/mod/aut)
     move to the modal instead. roll keeps its inline spot. */
  .sq-track__head .sq-track__save,
  .sq-track__head .sq-track__load-patch,
  .sq-track__head .sq-track__dup,
  .sq-track__head .sq-track__remove,
  .sq-track__head .sq-track__oct,
  .sq-track__head .sq-track__len-extend,
  .sq-track__head .sq-panel__btn-group > button:not(.sq-track__roll),
  .sq-track__head .sq-field:has(.sq-track__speed) {
    display: none;
  }

  /* synth-row inline: full-width sliders sized for fingers */
  .sq-track__head .sq-track__synth-row { flex: 1 1 100%; }
  .sq-track__head .sq-param-group .sq-field {
    flex: 1 1 42%;
    min-width: 0;
  }
  .sq-track__head .sq-param-group .sq-field input[type="range"] {
    width: auto;
    flex: 1 1 auto;
    min-width: 40px;
  }

  /* "more" toggle button injected by JS (sliders icon) */
  .sq-track__head .sq-track__more {
    padding: 6px 10px;
    min-height: 32px;
    height: auto;
    min-width: 36px;
  }

  /* roll + clear: icon-only on mobile */
  .sq-track__head .sq-track__roll,
  .sq-track__head .sq-track__clear { display: inline-flex; align-items: center; justify-content: center; }
  .sq-track__head .sq-track__roll .sq-btn-icon,
  .sq-track__head .sq-track__clear .sq-btn-icon { display: block; }
  .sq-track__head .sq-track__roll .sq-btn__label,
  .sq-track__head .sq-track__clear .sq-btn__label { display: none; }
  .sq-track__head .sq-track__more[aria-pressed="true"] {
    background: var(--accent);
    color: #0b0d10;
    border-color: var(--accent);
  }

  /* Track menu modal: hosts the reparented track-head extras. Layout
     vertically stacks the groups for thumb-friendly tapping. */
  .sq-track__menu-modal {
    width: 96vw;
    max-width: 96vw;
    min-width: 0;
    max-height: 92vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 14px;
  }
  .sq-track__menu-modal .sq-track__menu-title {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--fg);
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
  }
  .sq-track__menu-modal .sq-track__menu-engine {
    font-size: 11px;
    font-weight: 400;
    color: var(--fg-dim);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  /* dim lowercase section labels */
  .sq-track__menu-modal .sq-track__menu-label {
    font-size: 10px;
    letter-spacing: 0.08em;
    color: var(--fg-dim);
    margin-top: 6px;
  }
  .sq-track__menu-modal .sq-track__menu-row {
    display: flex;
    gap: 6px;
  }
  .sq-track__menu-modal .sq-track__menu-row > * {
    flex: 1 1 0;
    min-width: 0;
  }
  .sq-track__menu-modal .sq-track__save,
  .sq-track__menu-modal .sq-track__load-patch,
  .sq-track__menu-modal .sq-track__dup,
  .sq-track__menu-modal .sq-track__remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 8px 10px;
    height: auto;
    font-size: 12px;
    min-width: 0;
    min-height: 40px;
  }
  .sq-track__menu-modal .sq-menu-btn-label {
    font-size: 12px;
    text-transform: lowercase;
  }
  .sq-track__menu-modal .sq-track__len-extend,
  .sq-track__menu-modal .sq-track__oct {
    display: flex;
    gap: 6px;
    flex-wrap: nowrap;
  }
  .sq-track__menu-modal .sq-track__len-extend > button,
  .sq-track__menu-modal .sq-track__oct > button {
    flex: 1 1 0;
    min-width: 0;
    min-height: 40px;
    padding: 6px 4px;
    font-size: 12px;
  }
  /* sound-shaping panel buttons: tap-friendly grid at the top of the menu */
  .sq-track__menu-modal .sq-track__menu-panels {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
  }
  .sq-track__menu-modal .sq-track__menu-panels > button {
    min-width: 0;
    min-height: 40px;
    padding: 8px 4px;
    font-size: 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
  }
  .sq-track__menu-modal .sq-track__menu-panels > button[aria-pressed="true"] {
    background: var(--accent);
    color: #0b0d10;
    border-color: var(--accent);
  }
  /* speed: the section label does the naming — hide the tiny inline "spd"
     label and let the select fill the row at tap size */
  .sq-track__menu-modal .sq-field:has(.sq-track__speed) {
    display: flex;
    align-items: stretch;
  }
  .sq-track__menu-modal .sq-field:has(.sq-track__speed) > label { display: none; }
  .sq-track__menu-modal .sq-track__speed {
    flex: 1 1 0;
    min-height: 40px;
    padding: 8px 10px;
    font-size: 13px;
  }
  .sq-track__menu-modal .sq-track__menu-close {
    align-self: stretch;
    margin-top: 4px;
    padding: 10px;
    background: var(--accent);
    color: #0b0d10;
    border-color: var(--accent);
    font-weight: 600;
    min-height: 40px;
  }

  /* solo/mute/clear: pinned, finger-friendly */
  .sq-track__head .sq-track__solo,
  .sq-track__head .sq-track__mute,
  .sq-track__head .sq-track__clear {
    padding: 6px 10px;
    min-height: 32px;
    font-size: 12px;
  }

  /* synth-row: stack groups */
  .sq-track__synth-row { gap: 4px; flex-direction: column; align-items: stretch; }
  .sq-param-group { padding: 4px 6px; gap: 6px; flex-wrap: wrap; }
  .sq-param-group .sq-field input[type="range"] { width: 60px; }
  .sq-param-group--moog .sq-moog__osc-row { flex-wrap: wrap; }
  .sq-param-group--moog .sq-moog__freq input[type="range"] { width: 60px; }

  /* panel-btn-group: only roll stays inline (rest live in the "more" menu) —
     let it flow beside solo/mute/clear instead of claiming a full row */
  .sq-track__head .sq-panel__btn-group {
    flex: 0 1 auto;
    border-radius: 6px;
  }
  .sq-track__head .sq-panel__btn-group > button {
    padding: 6px 10px;
    font-size: 12px;
    min-width: 0;
    min-height: 32px;
    border-right: 1px solid var(--border);
  }
  .sq-track__head .sq-panel__btn-group > .sq-track__roll { border-right: none; }

  /* ---------- FX / FILTER / EQ / COMP / ENV panels ---------- */
  .sq-track__fx-panel,
  .sq-track__filter-panel,
  .sq-track__env-panel,
  .sq-track__eq-panel,
  .sq-track__comp-panel,
  .sq-track__mod-panel,
  .sq-track__aut-panel,
  .sq-track__roll-panel {
    padding: 6px 8px;
  }
  .sq-fx__row {
    gap: 6px;
    padding: 4px 0;
    row-gap: 4px;
  }
  .sq-fx__row .sq-fx__title {
    flex: 1 1 100%;
    min-width: 0;
    font-size: 10px;
  }
  .sq-fx__ctl { gap: 4px; }
  .sq-fx__ctl span { min-width: 28px; font-size: 10px; }
  .sq-fx__ctl input[type="range"] { width: 70px; }
  .sq-fx__ctl select { padding: 3px 4px; font-size: 11px; }

  /* lfo row: 2-column stacked layout */
  .sq-lfo__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    gap: 6px;
    row-gap: 4px;
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
  }
  .sq-lfo__row .sq-lfo__target {
    grid-column: 1 / -1;
    font-size: 11px;
  }
  .sq-lfo__row .sq-lfo__enable { grid-column: 1; }
  .sq-lfo__row .sq-lfo__shape { grid-column: 2; }
  .sq-lfo__row .sq-lfo__sync-wrap { grid-column: 1; }
  .sq-lfo__row .sq-lfo__rate-field {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
  }
  .sq-lfo__row .sq-field:last-of-type { grid-column: 1 / -1; }
  .sq-lfo__row .sq-lfo__remove {
    grid-row: 1;
    grid-column: 2 / -1;
    justify-self: end;
    align-self: start;
  }

  /* automation lane: stack label/buttons above grid */
  .sq-aut__lane {
    grid-template-columns: 1fr auto auto auto;
    grid-template-rows: auto auto;
    gap: 4px;
    row-gap: 4px;
  }
  .sq-aut__lane .sq-aut__grid {
    grid-column: 1 / -1;
    grid-row: 2;
    height: 64px;
  }

  /* keep wide piano-roll contents from pushing the page width.
     Tracks (and main grid items) default to min-width: auto, which lets
     intrinsic content grow them — explicitly clamp to 0 so the page stays
     bounded and the overflow lives inside the roll-grid. */
  main, .sq-track { min-width: 0; }
  .sq-track > * { min-width: 0; }
  .sq-track__roll-panel { min-width: 0; overflow: hidden; }

  /* piano roll: allow horizontal scroll INSIDE the roll-grid only.
     Sticky labels keep pitch names visible while scrolling steps. */
  .sq-roll__grid {
    grid-template-columns: 36px minmax(0, 1fr);
    max-height: 260px;
    overflow: auto;
    overscroll-behavior: contain;
  }
  .sq-roll__label {
    font-size: 9px;
    padding: 2px 4px;
    line-height: 1.3;
    position: sticky;
    left: 0;
    z-index: 2;
  }
  .sq-roll__cells { min-width: max-content; }
  .sq-roll__cell { height: 18px; min-width: 30px; }
  .sq-roll__vel-lane { grid-template-columns: 36px minmax(0, 1fr); }
  .sq-roll__vel-spacer { position: sticky; left: 0; z-index: 2; }
  .sq-roll__vel-cells { height: 96px; min-width: max-content; }
  .sq-roll__vel-cell { min-width: 30px; }

  /* ---------- STEP GRID (no horizontal scroll) ---------- */
  /* 16 cols stay; cells are tall to compensate for narrow width. */
  .sq-steps {
    grid-auto-rows: 52px;
    gap: 2px;
    touch-action: pan-y;
  }
  .sq-step {
    aspect-ratio: auto;
    min-height: 52px;
    height: 52px;
    border-radius: 3px;
  }
  .sq-step.is-held {
    height: auto;
    min-height: 52px;
    align-self: stretch;
  }
  /* note label larger so a finger can read it before tapping */
  .sq-step__note { font-size: 11px; }
  .sq-step.is-beat { outline: 1px solid rgba(255,255,255,0.10); }

  /* ---------- STEP EDITOR MODAL ---------- */
  .sq-step-editor {
    padding: 10px;
    max-width: 96vw;
    width: 96vw;
    max-height: 92vh;
    overflow-y: auto;
    gap: 6px;
    min-width: 0;
  }
  .sq-step-editor .sq-se__title { font-size: 10px; }
  .sq-step-editor .sq-se__field {
    grid-template-columns: 50px minmax(0, 1fr) 60px;
    gap: 6px;
  }
  .sq-step-editor .sq-se__chord-field {
    grid-template-columns: 50px 1fr auto;
    row-gap: 4px;
  }
  .sq-step-editor .sq-se__chord-field .sq-se__chord-label {
    grid-column: 1 / -1;
    text-align: left;
  }
  .sq-step-editor .sq-se__note-field {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    gap: 6px;
  }
  .sq-step-editor .sq-se__note-field > label:first-child { display: none; }
  .sq-step-editor .sq-se__note-header {
    grid-column: 1;
    grid-row: 1;
  }
  .sq-step-editor .sq-se__keyboard {
    --se-pad-size: 30px;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 3px;
    grid-column: 1;
    grid-row: 2;
  }
  .sq-step-editor .sq-se__keyboard .sq-se__pad {
    font-size: 10px;
    aspect-ratio: 1 / 1;
  }
  .sq-step-editor .sq-se__arp-selects { flex-wrap: wrap; }
  .sq-step-editor .sq-se__arp-selects select { flex: 1 1 30%; }
  .sq-step-editor .sq-se__sample-row { grid-template-columns: 1fr; }
  .sq-step-editor .sq-se__sample-row > label:first-child { display: none; }
  .sq-step-editor .sq-se__sample-ctl { grid-column: 1; }
  .sq-step-editor .sq-se__sample-meta { gap: 6px; }
  .sq-step-editor .sq-se__sample-fade { grid-template-columns: 1fr; gap: 6px; }
  .sq-step-editor .sq-se__waveform { height: 60px; }

  /* ---------- GENERIC MODALS ---------- */
  .sq-modal {
    min-width: 0;
    width: 94vw;
    max-width: 94vw;
    padding: 14px 16px;
    gap: 8px;
  }
  .sq-modal__actions button {
    padding: 8px 12px;
    min-height: 36px;
  }
  .sq-bounce__opts input[type="text"] { width: 100%; }
  .sq-bounce__opts label { flex: 1 1 100%; }

  .sq-patch__list .sq-patch__row button { padding: 8px 10px; min-height: 36px; }
}

/* very small phones: a touch tighter */
@media (max-width: 380px) {
  main { padding: 6px; }
  .sq-track { padding: 6px; }
  .sq-transport { padding: 5px 6px; }
  .sq-pattern-bar { padding: 5px 6px; }
  .sq-steps { grid-auto-rows: 48px; }
  .sq-step { min-height: 48px; height: 48px; }
}