/* WT·3 — dark hardware-inspired UI. No external assets; system font stacks. */

:root {
  --bg-deep: #0b0d12;
  --bg-panel: #12151d;
  --bg-panel-2: #171b25;
  --bg-inset: #0d1016;
  --line: hsl(222 20% 26% / 0.55);
  --line-soft: hsl(222 20% 22% / 0.35);
  --text: #c9d1e0;
  --text-dim: #7d879c;
  --text-faint: #545e72;
  --accent: #ffb03a;
  --accent-soft: hsl(36 100% 61% / 0.16);
  --accent-2: #5ad0c8;
  --accent-2-soft: hsl(175 55% 58% / 0.14);
  --danger: #ff5d5d;
  --viz-dim: hsl(222 18% 62% / 0.30);
  --viz-grid: hsl(222 20% 55% / 0.10);
  --viz-loop: hsl(175 55% 58% / 0.08);
  --radius: 10px;
  --font-disp: "Futura", "Avenir Next", "Trebuchet MS", system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Menlo", "Cascadia Code", monospace;
  --font-ui: "Avenir Next", "Segoe UI", system-ui, sans-serif;
}

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

html { color-scheme: dark; }

body {
  background:
    radial-gradient(1200px 500px at 50% -10%, hsl(222 40% 16% / 0.55), transparent 60%),
    radial-gradient(900px 600px at 90% 110%, hsl(175 40% 14% / 0.35), transparent 55%),
    var(--bg-deep);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::after { /* grain */
  content: '';
  position: fixed; inset: 0;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------------------------------------------------------------- start overlay */

#start-overlay {
  position: fixed; inset: 0; z-index: 100;
  display: grid; place-items: center;
  background: hsl(225 25% 5% / 0.86);
  backdrop-filter: blur(10px);
  transition: opacity 0.5s ease;
}
#start-overlay.hidden { opacity: 0; pointer-events: none; }
.start-card { text-align: center; padding: 3rem; }
.start-logo {
  font-family: var(--font-disp);
  font-size: clamp(4rem, 10vw, 7rem);
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
  text-shadow: 0 0 60px hsl(36 100% 61% / 0.4);
}
.start-sub {
  color: var(--text-dim);
  letter-spacing: 0.35em;
  text-transform: uppercase;
  font-size: 0.72rem;
  margin: 0.8rem 0 2.4rem;
}
#start-btn {
  font-family: var(--font-disp);
  font-size: 1.05rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.9rem 3.2rem;
  color: var(--bg-deep);
  background: linear-gradient(180deg, #ffc668, var(--accent));
  border: none; border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 8px 40px hsl(36 100% 61% / 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
#start-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 50px hsl(36 100% 61% / 0.5); }
#start-btn:disabled { opacity: 0.5; cursor: wait; }
.boot-status { margin-top: 1.4rem; color: var(--accent-2); font-family: var(--font-mono); font-size: 0.75rem; min-height: 2em; max-width: 40ch; }
.start-note { margin-top: 1.6rem; color: var(--text-faint); font-size: 0.72rem; }
.start-note code { color: var(--text-dim); font-family: var(--font-mono); }

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

#header {
  position: relative; z-index: 50;
  display: flex; flex-direction: column; gap: 0.35rem;
  padding: 0.45rem 1.2rem;
  background: hsl(224 24% 8%);
  border-bottom: 1px solid var(--line);
}
.h-row { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.h-row .h-group { padding: 0 0.8rem; }
.h-row > .h-group:first-of-type { border-left: none; padding-left: 0; }
.h-row-perf .h-group { gap: 0.5rem; }
.h-row-perf .knob {
  display: grid; grid-template-columns: auto auto; align-items: center;
  column-gap: 0.35rem; row-gap: 0; width: auto; padding: 0 2px;
}
.h-row-perf .knob svg { grid-row: span 2; }
.h-row-perf .knob .k-label, .h-row-perf .knob .k-value { justify-self: start; }
.h-row-perf .lbl-wrap { flex-direction: row; align-items: center; gap: 0.4rem; }
.h-view { display: inline-flex; margin-left: 0.4rem; }
.h-view .seg-btn { letter-spacing: 0.1em; }
#rack .view-hidden { display: none; }
.h-out { margin-left: auto; }
.brand { display: flex; align-items: center; margin-right: 0.4rem; }
.brand-name {
  font-family: var(--font-disp);
  font-weight: 700; font-size: 1.45rem;
  letter-spacing: 0.05em;
  color: var(--accent);
  line-height: 1;
}
.brand-sub {
  font-size: 0.58rem; letter-spacing: 0.3em; text-transform: uppercase;
  color: var(--text-faint);
}
.h-group {
  display: flex; align-items: center; gap: 0.7rem;
  flex-wrap: wrap; /* narrow viewports: groups fold instead of forcing overflow */
  padding: 0.25rem 0.9rem;
  border-left: 1px solid var(--line-soft);
}
.h-presets { flex-wrap: wrap; }
.h-status { margin-left: auto; align-items: center; gap: 0.7rem; border-left: none; }
.h-status-col { display: flex; flex-direction: column; align-items: flex-end; gap: 0.25rem; }
.h-status-line { display: flex; align-items: center; gap: 0.7rem; }
.h-set-btn { margin-left: 0.4rem; }
.h-settings {
  position: absolute; top: calc(100% - 1px); left: 50%; transform: translateX(-50%);
  display: flex; gap: 1.2rem; flex-wrap: wrap;
  max-width: calc(100vw - 2rem);
  padding: 0.8rem 1rem;
  background: var(--bg-panel-2);
  border: 1px solid var(--line);
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: 0 16px 40px hsl(225 40% 3% / 0.6);
}
.h-settings[hidden] { display: none; }
.h-set-sec { display: flex; flex-direction: column; gap: 0.4rem; }
.h-set-sec + .h-set-sec { border-left: 1px solid var(--line-soft); padding-left: 1.2rem; }
.h-set-title {
  font-size: 0.6rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint);
}
.h-set-body { display: flex; align-items: center; gap: 0.6rem; }
.scope {
  width: 140px; height: 30px;
  background: var(--bg-inset);
  border: 1px solid var(--line-soft);
  border-radius: 6px;
}
.rec-btn { font-family: var(--font-mono); min-width: 64px; }
.rec-btn.recording {
  color: #fff; border-color: var(--danger);
  background: hsl(0 100% 62% / 0.2);
  animation: recPulse 1.2s ease-in-out infinite;
}
@keyframes recPulse {
  0%, 100% { box-shadow: 0 0 0 0 hsl(0 100% 62% / 0.5); }
  50% { box-shadow: 0 0 10px 2px hsl(0 100% 62% / 0.25); }
}
.sel-preset { min-width: 190px; }
.meter { width: 130px; height: 5px; background: var(--bg-inset); border-radius: 3px; overflow: hidden; }
.meter-bar { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent-2), var(--accent)); transition: width 0.1s linear; }
.meter-bar.hot { background: var(--danger); }
.voices { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); }
.midi-ind { font-family: var(--font-mono); font-size: 0.66rem; color: var(--text-faint); max-width: 260px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.midi-ind.ok { color: var(--accent-2); }
.midi-ind.ok::before { content: '● '; }
.audio-ind { cursor: default; }
.audio-ind.warn { color: var(--danger); cursor: pointer; }
.preset-dirty { color: var(--accent); font-size: 0.7rem; visibility: hidden; }
.preset-dirty.on { visibility: visible; }
.h-row .h-edit { gap: 0.35rem; flex-wrap: nowrap; }
.h-edit .history-btn { font-size: 1rem; line-height: 1; padding: 0.25rem 0.5rem; }
.ab-switch { margin-left: 0.25rem; }
.ab-switch .seg-btn { min-width: 30px; }
.draft-status { font-family: var(--font-mono); font-size: 0.6rem; color: var(--accent-2); min-width: 92px; }
.draft-status.warn { color: var(--danger); }
@media (max-width: 560px) {
  .h-row .h-edit { flex-wrap: wrap; padding-inline: 0; border-left: 0; }
}

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

#rack {
  max-width: 1720px;
  margin-inline: auto;
  padding: 1rem clamp(0.6rem, 2vw, 1.6rem) 2rem;
  display: flex; flex-direction: column; gap: 0.9rem;
}
.row { display: grid; gap: 0.9rem; }
.row-osc { grid-template-columns: repeat(3, 1fr); }
.row-filter { grid-template-columns: 1fr minmax(200px, 0.55fr) 1fr; }
.row-mod { grid-template-columns: 1.5fr 1fr; }

/* Below 1440 the single-row filter panels no longer fit three across:
   F1 | F2 side by side, routing as a strip underneath. */
@media (max-width: 1439px) {
  .row-filter { grid-template-columns: 1fr 1fr; }
  .routing-panel { grid-column: span 2; order: 3; }
  .row-filter .routing-panel .panel-body { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .row-filter .routing-panel .seg { align-self: center; }
  .row-filter .routing-panel .route-row { flex: 1; min-width: 240px; }
}
@media (max-width: 1100px) {
  .row-filter .filter-krow { gap: 0.15rem 0.2rem; }
  .row-filter .filter-krow .knob { width: 52px; }
}
@media (max-width: 1240px) {
  .row-osc { grid-template-columns: 1fr; }
  .row-mod { grid-template-columns: 1fr; }
}
@media (max-width: 980px) {
  .row-filter { grid-template-columns: 1fr; }
  .routing-panel { grid-column: auto; order: 0; }
}

/* ---------------------------------------------------------------- panels */

.panel {
  background: linear-gradient(180deg, var(--bg-panel-2), var(--bg-panel));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px hsl(225 40% 3% / 0.5), inset 0 1px 0 hsl(222 30% 40% / 0.12);
  overflow: hidden;
  display: flex; flex-direction: column;
}
.panel-head {
  display: flex; align-items: center; gap: 0.8rem;
  flex-wrap: wrap;
  padding: 0.5rem 0.9rem;
  border-bottom: 1px solid var(--line-soft);
  background: hsl(224 22% 10% / 0.6);
}
.panel-head h2 {
  font-family: var(--font-disp);
  font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--text-dim);
}
.panel-body { padding: 0.8rem 0.9rem; display: flex; flex-direction: column; gap: 0.7rem; flex: 1; }
.panel-power { margin-left: auto; }

/* ---------------------------------------------------------------- reverb */

.reverb-presets { display: flex; gap: 0.3rem; }
.reverb-presets .btn.on { color: var(--accent-2); border-color: var(--accent-2); }
.reverb-enabled .panel-head h2 { color: var(--accent-2); }
.reverb-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 0.7rem 1.1rem; }
.reverb-group { display: flex; gap: 0.4rem; padding-right: 1.1rem; border-right: 1px solid var(--line-soft); }
.reverb-group:last-child { padding-right: 0; border-right: 0; }
.reverb-note { font-size: 0.66rem; color: var(--text-dim); line-height: 1.5; }

/* ---------------------------------------------------------------- knobs */

.knob {
  display: flex; flex-direction: column; align-items: center;
  gap: 1px; width: 62px;
  cursor: ns-resize;
  user-select: none; -webkit-user-select: none;
  touch-action: none;
  border-radius: 8px;
  padding: 3px 1px;
}
.knob:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 1px; }
.knob.dragging .k-value { color: var(--accent); }
.knob.knob-inactive { cursor: default; touch-action: auto; }
.knob.knob-inactive svg { opacity: 0.25; }
.knob.knob-inactive .k-label { color: var(--text-faint); }
.knob.knob-inactive .k-value { color: var(--text-dim); }
.knob { position: relative; }
.knob.midi-mapped::before {
  content: '';
  position: absolute; top: 4px; right: 6px;
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent-2);
  box-shadow: 0 0 4px var(--accent-2);
}
.knob.midi-learn { outline: 2px dashed var(--accent-2); outline-offset: 1px; animation: learnPulse 0.9s ease-in-out infinite; }
@keyframes learnPulse {
  0%, 100% { outline-color: hsl(175 55% 58% / 0.9); }
  50% { outline-color: hsl(175 55% 58% / 0.25); }
}
.knob-sm { width: 50px; }
.k-track { fill: none; stroke: hsl(222 18% 26%); stroke-width: 4; stroke-linecap: round; }
.k-val { fill: none; stroke: var(--accent); stroke-width: 4; stroke-linecap: round; filter: drop-shadow(0 0 3px hsl(36 100% 61% / 0.5)); }
.k-ptr { stroke: var(--text); stroke-width: 2.4; stroke-linecap: round; }
.k-label {
  font-size: 0.6rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--text-dim); white-space: nowrap;
}
.k-value {
  font-family: var(--font-mono); font-size: 0.62rem;
  color: var(--text-faint); white-space: nowrap;
}
.krow { display: flex; flex-wrap: wrap; gap: 0.15rem 0.3rem; justify-content: flex-start; }

/* ---------------------------------------------------------------- buttons, toggles, selects */

.btn {
  font-family: var(--font-ui); font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--text); background: var(--bg-inset);
  border: 1px solid var(--line); border-radius: 6px;
  padding: 0.34rem 0.7rem; cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 1px; }
.btn-sm { font-size: 0.66rem; padding: 0.26rem 0.55rem; }
.btn:disabled { opacity: 0.4; cursor: default; border-color: var(--line); color: var(--text); }
.btn.on-alt { color: var(--accent-2); border-color: hsl(175 55% 58% / 0.55); }

.tgl {
  font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.1em;
  color: var(--text-faint); background: var(--bg-inset);
  border: 1px solid var(--line); border-radius: 6px;
  padding: 0.32rem 0.6rem; cursor: pointer;
  transition: all 0.15s;
}
.tgl.on {
  color: var(--accent); border-color: hsl(36 100% 61% / 0.6);
  background: var(--accent-soft);
  box-shadow: 0 0 10px hsl(36 100% 61% / 0.15), inset 0 0 6px hsl(36 100% 61% / 0.1);
}
.tgl:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 1px; }

.seg { display: inline-flex; background: var(--bg-inset); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.seg-btn {
  font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.04em;
  color: var(--text-faint); background: transparent;
  border: none; border-right: 1px solid var(--line-soft);
  padding: 0.32rem 0.55rem; cursor: pointer;
  transition: all 0.12s;
}
.seg-btn:last-child { border-right: none; }
.seg-btn:hover { color: var(--text); }
.seg-btn.on { color: var(--bg-deep); background: var(--accent); font-weight: 600; }
.seg-btn:focus-visible { outline: 2px solid var(--accent-2); outline-offset: -2px; }

.sel {
  font-family: var(--font-ui); font-size: 0.72rem;
  color: var(--text); background: var(--bg-inset);
  border: 1px solid var(--line); border-radius: 6px;
  padding: 0.3rem 0.5rem; cursor: pointer;
  max-width: 100%;
}
.sel:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 1px; }
.sel:disabled { opacity: 0.4; }
.sel-mode { margin-left: auto; }
.sel-mx { font-size: 0.68rem; min-width: 0; }

.lbl-wrap { display: flex; flex-direction: column; gap: 3px; }
.lbl { font-size: 0.58rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); }
.lbl-wrap.dimmed { opacity: 0.45; }
.filter-krow { align-items: center; }
.filter-krow .knob { width: 58px; }
.krow-sep { align-self: stretch; width: 1px; margin: 0.2rem 0.35rem; background: var(--line-soft); }
.filter-krow .lbl-wrap { margin: 0 0.25rem; }
.optrow { display: flex; flex-wrap: wrap; gap: 0.9rem; align-items: flex-end; }

/* ---------------------------------------------------------------- osc panel */

.osc-tablebar { display: flex; gap: 0.5rem; align-items: center; }
.sel-table { flex: 1; min-width: 0; }
.wt-viz {
  width: 100%; height: 120px;
  background: var(--bg-inset);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
}

/* ---------------------------------------------------------------- routing */

.routing-panel .seg { align-self: stretch; }
.routing-panel .seg-btn { flex: 1; }
.route-row { display: flex; align-items: center; gap: 0.6rem; }
.route-map {
  flex: 1; min-width: 0;
  font-family: var(--font-mono); font-size: 0.7rem;
  color: var(--accent-2);
  background: var(--bg-inset);
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 0.7rem; text-align: center;
  letter-spacing: 0.06em;
}
.route-path { font-size: 0.62rem; }
.route-feeds { margin-top: 0.45rem; display: grid; gap: 0.2rem; text-align: left; }
.route-feed { display: flex; align-items: baseline; gap: 0.35rem; font-size: 0.58rem; letter-spacing: 0; }
.route-feed-label { flex: none; color: var(--text-dim); }
.route-feed-source { color: var(--text); overflow-wrap: anywhere; }
.route-feed-source.route-empty { color: var(--accent); }
.route-hint { color: var(--text-dim); font-size: 0.62rem; line-height: 1.4; }

/* ---------------------------------------------------------------- tabs */

.tabs { display: flex; gap: 3px; margin-left: 0.4rem; }
.tab-btn {
  font-family: var(--font-mono); font-size: 0.64rem;
  color: var(--text-faint); background: transparent;
  border: 1px solid transparent; border-radius: 5px;
  padding: 0.22rem 0.55rem; cursor: pointer;
  transition: all 0.12s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.on { color: var(--accent); border-color: hsl(36 100% 61% / 0.5); background: var(--accent-soft); }

/* ---------------------------------------------------------------- envelope editor */

.env-title { font-family: var(--font-mono); font-size: 0.68rem; color: var(--text-dim); letter-spacing: 0.1em; }
.env-canvas {
  width: 100%; height: 190px;
  background: var(--bg-inset);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  cursor: crosshair;
  touch-action: none;
}
.env-readout { font-family: var(--font-mono); font-size: 0.64rem; color: var(--text-faint); min-height: 1.2em; }
.env-loop-row { align-items: flex-end; }

/* ---------------------------------------------------------------- lfo */

.lfo-preview {
  width: 100%; height: 58px;
  background: var(--bg-inset);
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  touch-action: none;
}
.lfo-preview.editable { cursor: crosshair; border-color: hsl(175 55% 58% / 0.45); }
.lfo-hint {
  font-size: 0.6rem; color: var(--text-faint);
  font-family: var(--font-mono); letter-spacing: 0.05em;
  margin-top: -0.3rem;
}

/* ---------------------------------------------------------------- matrix */

.matrix-grid {
  display: grid;
  grid-template-columns: 1.4rem 1fr 1fr 52px 1.2fr;
  gap: 0.3rem 0.5rem;
  align-items: center;
}
.mx-head {
  font-size: 0.56rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-faint); padding-bottom: 0.2rem;
  border-bottom: 1px solid var(--line-soft);
}
.mx-num { font-family: var(--font-mono); font-size: 0.66rem; color: var(--text-faint); text-align: center; }
.mx-knob { display: flex; justify-content: center; }
.mx-knob .k-label { display: none; }
@media (max-width: 900px) {
  .matrix-grid { grid-template-columns: 1.2rem 1fr 1fr 48px 1fr; }
}

/* ---------------------------------------------------------------- sequencer */

.seq-play { font-weight: 700; }
.seq-pats { display: inline-flex; gap: 3px; }
.seq-pat {
  font-family: var(--font-mono); font-size: 0.66rem;
  width: 26px; padding: 0.3rem 0;
  color: var(--text-faint); background: var(--bg-inset);
  border: 1px solid var(--line); border-radius: 5px;
  cursor: pointer; transition: all 0.12s;
}
.seq-pat:hover { color: var(--text); }
.seq-pat.on { color: var(--bg-deep); background: var(--accent); border-color: var(--accent); font-weight: 700; }
.seq-pat.playing:not(.on) { color: var(--accent-2); border-color: hsl(175 55% 58% / 0.6); }
.seq-pat.playing.on { box-shadow: 0 0 8px hsl(36 100% 61% / 0.45); }
.seq-hint { font-size: 0.62rem; color: var(--text-faint); margin-left: auto; }
.seq-steps {
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 4px;
  height: 84px;
}
.seq-cell {
  position: relative;
  background: var(--bg-inset);
  border: 1px solid var(--line-soft);
  border-radius: 5px;
  cursor: pointer;
  touch-action: none;
  user-select: none; -webkit-user-select: none;
  transition: border-color 0.1s;
}
.seq-cell::after { /* center line */
  content: '';
  position: absolute; left: 3px; right: 3px; top: 50%;
  border-top: 1px solid var(--line-soft);
}
.seq-cell:hover { border-color: var(--accent-2); }
.seq-bar {
  position: absolute; left: 20%; right: 20%;
  background: var(--accent);
  border-radius: 2px;
  opacity: 0.9;
}
.seq-cell.off .seq-bar { background: var(--text-faint); opacity: 0.3; }
.seq-cell.off .seq-num { color: var(--text-faint); opacity: 0.5; }
.seq-num {
  position: absolute; bottom: 2px; left: 0; right: 0;
  text-align: center;
  font-family: var(--font-mono); font-size: 0.58rem;
  color: var(--text-dim);
  pointer-events: none;
}
.seq-cell.playing {
  border-color: var(--accent);
  box-shadow: 0 0 8px hsl(36 100% 61% / 0.35), inset 0 0 6px hsl(36 100% 61% / 0.12);
}

/* ---------------------------------------------------------------- keyboard */

.kbd-wrap { display: flex; flex-direction: column; gap: 0.4rem; }
.kbd-bar { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.kbd-oct { font-family: var(--font-mono); font-size: 0.7rem; color: var(--accent-2); min-width: 70px; text-align: center; }
.kbd-hint { font-size: 0.64rem; color: var(--text-faint); margin-left: auto; }
.kbd {
  position: relative; height: 96px;
  background: var(--bg-inset);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  touch-action: none;
  user-select: none; -webkit-user-select: none;
}
.key { position: absolute; top: 0; cursor: pointer; }
.key-w {
  height: 100%;
  background: linear-gradient(180deg, #d9dde6, #b9bfcc);
  border: 1px solid #8a91a3;
  border-radius: 0 0 4px 4px;
  z-index: 1;
}
.key-w:hover { background: linear-gradient(180deg, #e6eaf2, #c6ccda); }
.key-w.held { background: linear-gradient(180deg, #ffd28a, var(--accent)); border-color: var(--accent); }
.key-b {
  height: 60%;
  background: linear-gradient(180deg, #2a2e3a, #14161d);
  border: 1px solid #000;
  border-radius: 0 0 3px 3px;
  z-index: 2;
}
.key-b:hover { background: linear-gradient(180deg, #3a3f4e, #1d2029); }
.key-b.held { background: linear-gradient(180deg, var(--accent), #b87718); }
.key-label {
  position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-mono); font-size: 0.56rem; color: #59617a;
  pointer-events: none;
}

/* ---------------------------------------------------------------- toast */

.toast {
  position: fixed; bottom: 1.2rem; left: 50%;
  transform: translate(-50%, 20px);
  background: var(--bg-panel-2);
  border: 1px solid var(--accent-2);
  color: var(--text);
  font-size: 0.75rem;
  padding: 0.55rem 1.1rem;
  border-radius: 8px;
  box-shadow: 0 10px 40px hsl(225 40% 3% / 0.7);
  opacity: 0; transition: all 0.3s ease;
  z-index: 200;
  max-width: 80vw;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* header row 1: groups keep their contents on one line and the preset select
   narrows with the viewport, so the row fits from ~1000 px up. If it still
   doesn't (long MIDI name, suspended audio), the row wraps — never overlaps. */
.h-row:first-child > .h-presets, .h-row:first-child > .h-status { flex-wrap: nowrap; }
.h-presets .sel-preset { min-width: 0; width: 190px; }
.h-status-line .midi-ind:not(.audio-ind) { max-width: 150px; }
.h-status-line .audio-ind { max-width: none; } /* the resume hint must stay readable */
.voices { white-space: nowrap; }
.h-status .meter { width: 80px; }
@media (max-width: 1599px) {
  .scope { display: none; }
}
@media (max-width: 1439px) {
  .brand { display: none; }
  .h-row .h-group { padding: 0 0.5rem; }
  .h-presets { gap: 0.4rem; }
  .h-presets .sel-preset { width: 140px; }
  .h-status-line .midi-ind:not(.audio-ind) { max-width: 100px; }
}
@media (max-width: 1180px) {
  .h-presets .btn:not(.btn-sm) { padding: 0.26rem 0.45rem; font-size: 0.66rem; }
  .h-view .seg-btn { padding: 0.32rem 0.4rem; letter-spacing: 0.04em; }
  .h-presets .sel-preset { width: 110px; }
  .h-status-line .midi-ind:not(.audio-ind) { max-width: 60px; }
}
@media (max-width: 960px) {
  /* phones: wrapping beats clipping */
  .h-row:first-child, .h-row:first-child > .h-presets, .h-row:first-child > .h-status { flex-wrap: wrap; }
}