:root {
  --bg:        #0f0f1a;
  --surface:   #1a1a2e;
  --surface-2: #242440;
  --violet:    #7c3aed;
  --violet-lo: #4c1d95;
  --violet-hi: #a855f7;
  --cyan:      #06b6d4;
  --cloud:     #f1f5f9;
  --muted:     #94a3b8;
  --cell-off:  #2e2e4a;
  --red:       #ef4444;
  --radius:    6px;
}

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

body {
  background: var(--bg);
  color: var(--cloud);
  font-family: 'Courier New', Courier, monospace;
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 1.5rem 1rem;
}

.app {
  width: 100%;
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ── Header ─────────────────────────────────────────── */

.header {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.title {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--violet-hi);
  flex-shrink: 0;
}

/* ── Panel nav ───────────────────────────────────────── */

.panel-nav {
  display: flex;
  gap: 2px;
  flex: 1;
}

.btn--panel {
  padding: 0.4rem 1.1rem;
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--surface-2);
  border-radius: 0;
  font-family: inherit;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn--panel:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.btn--panel:last-child  { border-radius: 0 var(--radius) var(--radius) 0; }
.btn--panel:hover { color: var(--cloud); border-color: var(--violet-lo); }
.btn--panel.active {
  background: var(--violet);
  color: var(--cloud);
  border-color: var(--violet);
}
.btn--panel:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* ── BPM control ─────────────────────────────────────── */

.bpm-control {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}
.bpm-control label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
#bpm-value { color: var(--cyan); font-weight: 700; }

/* ── Visualizer strip ────────────────────────────────── */

.visualizer-wrap {
  width: 100%;
  height: 56px;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--surface-2);
}
.visualizer-wrap canvas { display: block; }

/* ── Panels ──────────────────────────────────────────── */

.panel { display: none; }
.panel.active { display: block; }

.panel__inner {
  background: var(--surface);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  padding: 1.25rem 1rem;
}

/* ── Sequencer panel ─────────────────────────────────── */

.seq-subheader {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.mode-toggle { display: flex; gap: 2px; }
.btn--mode {
  padding: 0.35rem 0.9rem;
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--surface-2);
  border-radius: 0;
  font-family: inherit;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.btn--mode:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.btn--mode:last-child  { border-radius: 0 var(--radius) var(--radius) 0; }
.btn--mode.active { background: var(--violet); color: var(--cloud); border-color: var(--violet); }
.btn--mode:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.sequencer { display: flex; flex-direction: column; gap: 0.75rem; }

.track {
  display: grid;
  grid-template-columns: 72px 1fr 100px;
  align-items: center;
  gap: 0.75rem;
}
.track--bass {
  border-top: 1px solid var(--surface-2);
  padding-top: 0.6rem;
  margin-top: 0.15rem;
}
.track--bass .track__label { color: var(--cyan); }

.track__label {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: right;
}
.track__grid {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 4px;
}
.track__grid .step:nth-child(4n+1) { margin-left: 4px; }
.track__grid .step:first-child { margin-left: 0; }
.sequencer.bembe .track__grid { grid-template-columns: repeat(12, 1fr); }

.step-ghost {
  aspect-ratio: 1;
  border-radius: 3px;
  background: transparent;
  border: 1px dashed var(--surface-2);
  pointer-events: none;
}

.step {
  aspect-ratio: 1;
  border: none;
  border-radius: 3px;
  background: var(--cell-off);
  cursor: pointer;
  transition: background 0.08s, transform 0.08s, box-shadow 0.08s;
  outline: none;
}
.step:hover { background: var(--violet-lo); }
.step:focus-visible { outline: 2px solid var(--cyan); outline-offset: 1px; }
.step.on { background: var(--violet); box-shadow: 0 0 6px rgba(124,58,237,0.6); }
.step.on:hover { background: var(--violet-hi); }
.step.playing { background: var(--cyan) !important; box-shadow: 0 0 10px rgba(6,182,212,0.7); transform: scaleY(0.92); }

.track__controls { display: flex; flex-direction: column; gap: 0.4rem; }
.track__control-row { display: flex; align-items: center; gap: 0.4rem; }
.track__control-row label {
  font-size: 0.55rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); min-width: 26px;
}
.track__controls input[type="range"] { width: 55px; height: 3px; }
.track__controls input[type="range"]::-webkit-slider-thumb { width: 10px; height: 10px; }

/* ── Dub submode bar ─────────────────────────────────── */

.dub-submode-bar {
  display: flex;
  align-items: center;
  margin-bottom: 0.75rem;
}

/* ── Punch-In panel ──────────────────────────────────── */

.punch-hint {
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 1rem;
  text-align: center;
}

.punch-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.btn--punch {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 1.5rem 1rem;
  background: var(--surface-2);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.08s, border-color 0.08s, box-shadow 0.08s, transform 0.08s;
  touch-action: none;
}
.btn--punch:hover { border-color: var(--violet-lo); }
.btn--punch.held {
  background: var(--violet);
  border-color: var(--violet-hi);
  box-shadow: 0 0 20px rgba(124,58,237,0.55);
  transform: scale(0.97);
}
.btn--punch:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.punch-name {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cloud);
}
.punch-sub {
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.55rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.btn--punch.held .punch-sub { color: rgba(255,255,255,0.7); }

/* ── Dub Lab panel ───────────────────────────────────── */

.dub-layout {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 1rem;
  align-items: start;
}

/* Presets bar */
.dub-presets {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.dub-presets__label {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 0.25rem;
}
.btn--preset {
  padding: 0.3rem 0.75rem;
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.btn--preset:hover { color: var(--cloud); border-color: var(--violet-lo); }
.btn--preset.active { background: var(--violet); color: var(--cloud); border-color: var(--violet); }
.btn--preset:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* Dub tracks */
.dub-tracks { display: flex; flex-direction: column; gap: 0.75rem; }

.dub-track {
  display: grid;
  grid-template-columns: 64px 1fr 72px;
  align-items: center;
  gap: 0.75rem;
}
.dub-track__label {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: right;
}
.dub-track--bass .dub-track__label { color: var(--cyan); }

.dub-track__grid {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 3px;
}
.dub-track__grid .step:nth-child(4n+1) { margin-left: 3px; }
.dub-track__grid .step:first-child { margin-left: 0; }

.dub-track__vol { display: flex; flex-direction: column; gap: 0.25rem; }
.dub-track__vol label { font-size: 0.5rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.dub-track__vol input[type="range"] { width: 60px; height: 3px; }
.dub-track__vol input[type="range"]::-webkit-slider-thumb { width: 10px; height: 10px; }

/* Mute button inside dub track */
.btn--mute {
  padding: 0.2rem 0.4rem;
  background: transparent;
  border: 1px solid var(--surface-2);
  border-radius: 3px;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.btn--mute.muted { background: var(--violet-lo); color: var(--cloud); border-color: var(--violet); }
.btn--mute:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* ── FX Rack sidebar ─────────────────────────────────── */

.dub-fx {
  background: var(--bg);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  padding: 0.75rem;
  position: sticky;
  top: 1rem;
}

.fx-title {
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--violet-hi);
  margin-bottom: 0.75rem;
}

.fx-rack { display: flex; flex-direction: column; gap: 0.6rem; }

.fx-unit {
  background: var(--surface);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  padding: 0.6rem 0.65rem;
  transition: border-color 0.15s;
}
.fx-unit.active { border-color: var(--violet-lo); }

.fx-unit__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}
.fx-unit__name {
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cloud);
}

.fx-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.3rem;
}
.fx-row:last-child { margin-bottom: 0; }
.fx-row label {
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  min-width: 36px;
}
.fx-row input[type="range"] {
  width: 100%;
  height: 3px;
}
.fx-row input[type="range"]::-webkit-slider-thumb { width: 10px; height: 10px; }

.fx-row select {
  background: var(--surface-2);
  color: var(--cloud);
  border: 1px solid var(--surface-2);
  border-radius: 3px;
  font-family: inherit;
  font-size: 0.6rem;
  padding: 0.15rem 0.3rem;
  cursor: pointer;
}

/* Siren hold button */
.fx-siren { border-color: var(--violet-lo); }

.btn--siren {
  width: 100%;
  margin-top: 0.5rem;
  padding: 0.55rem 0;
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.1s, color 0.1s, border-color 0.1s, box-shadow 0.1s;
}
.btn--siren:hover { color: var(--cloud); border-color: var(--violet-lo); }
.btn--siren.active {
  background: var(--violet);
  color: var(--cloud);
  border-color: var(--violet-hi);
  box-shadow: 0 0 14px rgba(124,58,237,0.6);
}
.btn--siren:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* Toggle switch */
.fx-toggle { display: inline-flex; align-items: center; cursor: pointer; }
.fx-toggle input { display: none; }
.fx-toggle__track {
  display: inline-block;
  width: 28px;
  height: 14px;
  background: var(--surface-2);
  border-radius: 7px;
  position: relative;
  transition: background 0.2s;
}
.fx-toggle__track::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--muted);
  transition: transform 0.2s, background 0.2s;
}
.fx-toggle input:checked + .fx-toggle__track { background: var(--violet-lo); }
.fx-toggle input:checked + .fx-toggle__track::after {
  transform: translateX(14px);
  background: var(--violet-hi);
}

/* ── Drum Machine panel ──────────────────────────────── */

.drum-topbar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
.drum-topbar__label {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-right: 0.25rem;
}

.pattern-bank { display: flex; align-items: center; gap: 2px; }
.btn--pat {
  padding: 0.3rem 0.65rem;
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--surface-2);
  border-radius: 0;
  font-family: inherit;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.btn--pat:first-of-type { border-radius: var(--radius) 0 0 var(--radius); }
.btn--pat:last-of-type  { border-radius: 0 var(--radius) var(--radius) 0; }
.btn--pat.active { background: var(--violet); color: var(--cloud); border-color: var(--violet); }
.btn--pat:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.swing-control, .drum-steps-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.swing-control label, .drum-steps-control label {
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}
#swing-value { color: var(--cyan); }
.drum-steps-control select {
  background: var(--surface-2);
  color: var(--cloud);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.65rem;
  padding: 0.2rem 0.4rem;
  cursor: pointer;
}

.drum-grid { display: flex; flex-direction: column; gap: 0.6rem; }

.drum-row {
  display: grid;
  grid-template-columns: 76px 1fr 80px;
  align-items: center;
  gap: 0.75rem;
}

.drum-row__info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.2rem;
}
.drum-row__label {
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.btn--load-sample {
  padding: 0.1rem 0.3rem;
  background: transparent;
  border: 1px dashed var(--surface-2);
  border-radius: 3px;
  color: var(--muted);
  font-family: inherit;
  font-size: 0.45rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s;
}
.btn--load-sample:hover { border-color: var(--cyan); color: var(--cyan); }
.btn--load-sample.has-sample { border-color: var(--violet-hi); color: var(--violet-hi); border-style: solid; }
.btn--load-sample:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

.drum-row__steps {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 3px;
}
.drum-row__steps.steps-32 { grid-template-columns: repeat(32, 1fr); }
.drum-row__steps .step:nth-child(4n+1) { margin-left: 3px; }
.drum-row__steps .step:first-child { margin-left: 0; }

.drum-row__vol { display: flex; flex-direction: column; gap: 0.25rem; }
.drum-row__vol label { font-size: 0.5rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.drum-row__vol input[type="range"] { width: 68px; height: 3px; }
.drum-row__vol input[type="range"]::-webkit-slider-thumb { width: 10px; height: 10px; }

/* ── Transport ───────────────────────────────────────── */

.transport {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.6rem 2rem;
  border: none;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s, opacity 0.15s;
}
.btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.btn:disabled { opacity: 0.35; cursor: not-allowed; }

.btn--play { background: var(--violet); color: var(--cloud); }
.btn--play:not(:disabled):hover { background: var(--violet-hi); box-shadow: 0 0 12px rgba(124,58,237,0.5); }
.btn--stop {
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--surface-2);
}
.btn--stop:not(:disabled):hover { background: var(--surface); color: var(--cloud); border-color: var(--violet-lo); }

.btn--clear {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--surface-2);
  padding: 0.6rem 1.25rem;
}
.btn--clear:hover { color: var(--cloud); border-color: var(--violet-lo); }

.rec-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.rec-scope-label {
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.rec-scope {
  background: var(--surface-2);
  color: var(--cloud);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.65rem;
  padding: 0.25rem 0.4rem;
  cursor: pointer;
}

.btn--rec {
  background: var(--surface-2);
  color: var(--muted);
  border: 1px solid var(--surface-2);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
}
.btn--rec:not(:disabled):hover { color: var(--cloud); border-color: var(--violet-lo); }
.btn--rec.recording { color: var(--cloud); border-color: rgba(239,68,68,0.5); background: rgba(239,68,68,0.12); }

.rec-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--red);
  flex-shrink: 0;
  opacity: 0.4;
  transition: opacity 0.15s;
}
.btn--rec.recording .rec-dot { opacity: 1; animation: pulse-rec 1s ease-in-out infinite; }
@keyframes pulse-rec {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.75); }
}

/* ── Rec limit + Downloads ───────────────────────────── */

.rec-limit-msg {
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--red);
  padding: 0.35rem 0;
}
.downloads { display: flex; flex-direction: column; gap: 0.5rem; }

.download-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--surface);
  border: 1px solid var(--surface-2);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
}
.download-item__label { flex: 1; font-size: 0.65rem; letter-spacing: 0.08em; color: var(--muted); }
.download-item__actions { display: flex; gap: 0.4rem; flex-shrink: 0; }

.item-btn {
  font-size: 0.6rem; font-family: inherit; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  border-radius: 4px; padding: 0.25rem 0.55rem;
  cursor: pointer; transition: background 0.12s, color 0.12s; border: 1px solid;
}
.item-btn:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.item-btn--play { color: var(--violet-hi); border-color: var(--violet-hi); background: transparent; }
.item-btn--play:hover, .item-btn--play.playing { background: var(--violet-hi); color: var(--bg); }
.item-btn--export {
  color: var(--cyan); border-color: var(--cyan); background: transparent;
  text-decoration: none; display: inline-flex; align-items: center;
}
.item-btn--export:hover { background: var(--cyan); color: var(--bg); }
.item-btn--delete { color: var(--muted); border-color: var(--surface-2); background: transparent; }
.item-btn--delete:hover { color: var(--red); border-color: var(--red); background: rgba(239,68,68,0.08); }

/* ── Shared range inputs ─────────────────────────────── */

input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 120px; height: 4px;
  background: var(--surface-2); border-radius: 2px;
  outline: none; cursor: pointer;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--violet); cursor: pointer; transition: background 0.15s;
}
input[type="range"]::-webkit-slider-thumb:hover { background: var(--violet-hi); }
input[type="range"]:focus-visible::-webkit-slider-thumb { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* ── Dub engine toggle ───────────────────────────────── */

.dub-engine-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0;
  margin-bottom: 0.35rem;
}

.dub-engine-bar__label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-right: 0.15rem;
}

.btn--engine {
  padding: 0.2rem 0.7rem;
  font-size: 0.7rem;
  font-family: inherit;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--violet-lo);
  background: transparent;
  color: var(--muted);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.btn--engine:hover { border-color: var(--violet-hi); color: var(--cloud); }
.btn--engine.active { background: var(--violet); border-color: var(--violet); color: var(--cloud); }
.btn--engine:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }

/* ── Dub sample load row ─────────────────────────────── */

.dub-samples-row {
  display: flex;
  gap: 0.5rem;
  padding: 0.5rem 0.6rem;
  background: var(--surface-2);
  border-radius: var(--radius);
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.sample-slot {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.sample-slot__label {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  min-width: 2.2rem;
}

.dub-samples-row .btn--load-sample {
  padding: 0.2rem 0.5rem;
  font-size: 0.65rem;
  font-family: inherit;
  letter-spacing: 0.06em;
  border: 1px dashed var(--violet-lo);
  background: transparent;
  color: var(--muted);
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
  max-width: 8rem;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.dub-samples-row .btn--load-sample:hover { border-color: var(--cyan); color: var(--cloud); }
.dub-samples-row .btn--load-sample.has-sample { border-style: solid; border-color: var(--cyan); color: var(--cyan); }
.dub-samples-row .btn--load-sample:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.dub-samples-row .btn--load-sample:disabled { opacity: 0.5; cursor: wait; }