:root {
  --paper: #f7f6f1;
  --ink: #101010;
  --muted: #77756e;
  --line: #d9d6cb;
  --acid: #d7ff2f;
  --hot: #ff5f3d;
  --blue: #5ca9ff;
  --white: #fff;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { color-scheme: light; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  min-height: 100vh;
}
button, input { font: inherit; }
a { font: inherit; }
button { color: inherit; }
.app-shell { width: min(1180px, calc(100% - 28px)); margin: 0 auto; padding: 18px 0 42px; }
.topbar {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 14px;
  border-bottom: 2px solid var(--ink);
  padding: 8px 0 14px;
  position: sticky;
  top: 0;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: blur(9px);
  z-index: 20;
}
.brand { color: var(--ink); text-decoration: none; font-weight: 900; letter-spacing: -.03em; font-size: 19px; }
.brand span { font-weight: 400; font-size: 11px; letter-spacing: .13em; margin-left: 7px; }
.transport-compact { display: flex; gap: 7px; }
.transport, .action, .wave {
  border: 1.5px solid var(--ink);
  background: transparent;
  cursor: pointer;
  min-height: 38px;
  padding: 0 14px;
  font-weight: 800;
  letter-spacing: .04em;
  font-size: 12px;
}
.transport.primary, .transport.primary[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.tempo-block { display: flex; align-items: center; gap: 7px; font-weight: 800; font-size: 11px; }
.tempo-block input { width: 60px; border: 1.5px solid var(--ink); background: var(--white); padding: 9px 8px; font-weight: 800; }
.hero { display: grid; grid-template-columns: 1.25fr .75fr; align-items: end; gap: 24px; padding: 52px 0 42px; }
.eyebrow { margin: 0 0 12px; font-size: 11px; letter-spacing: .17em; font-weight: 800; }
h1 { margin: 0; font-size: clamp(64px, 11vw, 150px); line-height: .77; letter-spacing: -.075em; font-weight: 900; }
.hero-copy { font-size: clamp(18px, 2.1vw, 28px); line-height: 1.05; letter-spacing: -.035em; max-width: 430px; margin: 0 0 6px; }
.panel { border-top: 2px solid var(--ink); padding: 18px 0 28px; }
.panel-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 22px; }
.panel-head > div:first-child { display: flex; align-items: baseline; gap: 10px; }
.index { font-size: 10px; font-weight: 800; color: var(--muted); }
h2 { margin: 0; font-size: 26px; letter-spacing: -.045em; }
.wave-toggle { display: flex; }
.wave { min-height: 34px; padding: 0 11px; }
.wave + .wave { border-left: 0; }
.wave.active { background: var(--acid); }
.knob-grid, .fx-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-bottom: 26px; }
.fx-grid { grid-template-columns: repeat(4, 1fr); }
.control { border: 1.5px solid var(--ink); background: var(--white); padding: 12px; display: grid; gap: 9px; }
.control > span { font-size: 10px; font-weight: 900; letter-spacing: .08em; }
.control output { font-size: 11px; color: var(--muted); min-height: 1em; }
input[type="range"] { width: 100%; accent-color: var(--ink); }
.step-header { display: grid; grid-template-columns: repeat(16, 1fr); gap: 5px; margin: 0 0 5px 108px; }
.step-num { text-align: center; font-size: 9px; color: var(--muted); font-weight: 800; }
.acid-sequencer { display: grid; grid-template-columns: 98px 1fr; gap: 10px; }
.acid-labels { display: grid; gap: 5px; }
.acid-labels span { min-height: 34px; display: flex; align-items: center; font-size: 10px; font-weight: 900; letter-spacing: .08em; }
.acid-grid { display: grid; grid-template-columns: repeat(16, minmax(34px, 1fr)); gap: 5px; }
.acid-step { display: grid; gap: 5px; min-width: 0; }
.note-select, .toggle-cell {
  width: 100%; min-height: 34px; border: 1.5px solid var(--ink); background: var(--white); font-weight: 800; font-size: 11px; text-align: center;
}
.note-select { appearance: none; padding: 0 4px; cursor: pointer; }
.toggle-cell { cursor: pointer; }
.toggle-cell.active.note { background: var(--acid); }
.toggle-cell.active.accent { background: var(--hot); }
.toggle-cell.active.slide { background: var(--blue); }
.acid-step.playing .note-select, .acid-step.playing .toggle-cell { outline: 3px solid var(--ink); outline-offset: -3px; }
.legend { display: flex; gap: 16px; margin: 12px 0 0 108px; font-size: 10px; color: var(--muted); }
.legend span { display: inline-flex; gap: 5px; align-items: center; }
.dot { width: 9px; height: 9px; border: 1px solid var(--ink); display: inline-block; }
.dot.on { background: var(--acid); } .dot.accent { background: var(--hot); } .dot.slide { background: var(--blue); }
.microcopy { margin: 0; color: var(--muted); font-size: 11px; }
.drum-sequencer { display: grid; gap: 8px; }
.drum-row { display: grid; grid-template-columns: 98px 1fr; gap: 10px; align-items: center; }
.drum-name { font-size: 11px; font-weight: 900; letter-spacing: .08em; display: flex; align-items: center; justify-content: space-between; gap: 7px; }
.drum-volume { width: 44px !important; }
.drum-grid { display: grid; grid-template-columns: repeat(16, minmax(34px, 1fr)); gap: 5px; }
.drum-cell { min-height: 36px; border: 1.5px solid var(--ink); background: var(--white); cursor: pointer; }
.drum-cell.active { background: var(--ink); }
.drum-cell.playing { box-shadow: inset 0 0 0 3px var(--acid); }
.auto-filter {
  display: grid;
  grid-template-columns: minmax(160px, .75fr) 1fr 1fr;
  gap: 10px;
  align-items: stretch;
  margin: -10px 0 24px;
}
.auto-filter-title {
  border: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .08em;
}
.control.compact { padding: 10px 12px; gap: 7px; }
.mini-toggle {
  border: 1px solid currentColor;
  background: transparent;
  color: inherit;
  padding: 6px 9px;
  min-width: 48px;
  cursor: pointer;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: .08em;
}
.mini-toggle[aria-pressed="true"] { background: var(--acid); color: var(--ink); border-color: var(--acid); }
.actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 18px; flex-wrap: wrap; }
.action { display: inline-flex; align-items: center; justify-content: center; text-decoration: none; }
.action.random { background: var(--acid); }
.action.record { background: var(--hot); }
.action.record.recording { background: var(--ink); color: var(--paper); animation: recPulse .8s steps(1) infinite; }
.take-action { background: var(--white); }
@keyframes recPulse { 50% { opacity: .55; } }
footer { border-top: 2px solid var(--ink); padding: 16px 0 0; display: flex; justify-content: space-between; gap: 18px; font-size: 10px; font-weight: 800; letter-spacing: .08em; }
.status { color: var(--muted); text-align: right; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }
button:hover { transform: translateY(-1px); }

@media (max-width: 800px) {
  .app-shell { width: min(100% - 18px, 1180px); }
  .topbar { grid-template-columns: 1fr auto; }
  .tempo-block { grid-column: 1 / -1; justify-self: end; margin-top: -4px; }
  .hero { grid-template-columns: 1fr; padding: 38px 0 32px; }
  .hero-copy { max-width: 620px; }
  .knob-grid { grid-template-columns: repeat(2, 1fr); }
  .fx-grid { grid-template-columns: repeat(2, 1fr); }
  .auto-filter { grid-template-columns: 1fr 1fr; }
  .auto-filter-title { grid-column: 1 / -1; }
  .acid-sequencer, .drum-row { grid-template-columns: 74px 1fr; gap: 6px; }
  .step-header, .legend { margin-left: 80px; }
  .acid-grid, .drum-grid, .step-header { gap: 3px; overflow-x: auto; grid-template-columns: repeat(16, 42px); padding-bottom: 4px; }
  .acid-labels span { min-height: 34px; }
  .drum-name { font-size: 9px; flex-direction: column; align-items: flex-start; }
  .drum-volume { width: 60px !important; }
}

@media (max-width: 520px) {
  .brand span { display: none; }
  .transport { min-height: 34px; padding: 0 10px; }
  h1 { font-size: clamp(58px, 23vw, 94px); }
  .knob-grid, .fx-grid { grid-template-columns: 1fr 1fr; }
  .auto-filter { grid-template-columns: 1fr 1fr; }
  .control:last-child { grid-column: 1 / -1; }
  footer { flex-direction: column; }
  .status { text-align: left; }
}

/* Pattern Controlled Filter */
.pcf-panel { position: relative; }
.pcf-power {
  min-width: 68px;
  min-height: 36px;
  color: var(--ink);
  border: 1.5px solid var(--ink);
}
.pcf-power[aria-pressed="true"] { background: var(--hot); color: var(--ink); border-color: var(--ink); }
.pcf-topline {
  display: grid;
  grid-template-columns: 1.25fr .7fr 1.25fr;
  gap: 10px;
  margin-bottom: 10px;
}
.pcf-selector, .pcf-choice {
  min-height: 58px;
  border: 1.5px solid var(--ink);
  background: var(--white);
  display: flex;
  align-items: stretch;
}
.pcf-nav {
  width: 54px;
  border: 0;
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  font-weight: 900;
  font-size: 19px;
}
.pcf-pattern-name {
  flex: 1;
  display: grid;
  align-content: center;
  gap: 4px;
  padding: 8px 12px;
  min-width: 0;
}
.pcf-pattern-name span, .pcf-choice > span {
  font-size: 9px;
  font-weight: 900;
  letter-spacing: .1em;
  color: var(--muted);
}
.pcf-pattern-name strong { font-size: 13px; letter-spacing: .025em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pcf-choice > span { align-self: center; padding: 0 10px; }
.pcf-mode, .pcf-route {
  flex: 1;
  border: 0;
  border-left: 1.5px solid var(--ink);
  background: transparent;
  cursor: pointer;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .06em;
  padding: 0 9px;
}
.pcf-mode.active, .pcf-route.active { background: var(--acid); }
.pcf-pattern-strip {
  height: 76px;
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  gap: 5px;
  align-items: end;
  border: 1.5px solid var(--ink);
  background: var(--ink);
  padding: 8px;
  margin-bottom: 10px;
}
.pcf-pattern-strip i {
  display: block;
  height: calc(var(--level) * 100%);
  min-height: 3px;
  background: var(--acid);
  transition: height .08s linear, background .05s linear;
}
.pcf-pattern-strip i.playing { background: var(--hot); }
.pcf-controls {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.pcf-copy { margin: 10px 0 0; text-align: right; }

@media (max-width: 800px) {
  .pcf-topline { grid-template-columns: 1fr 1fr; }
  .pcf-selector { grid-column: 1 / -1; }
  .pcf-controls { grid-template-columns: repeat(2, 1fr); }
  .pcf-pattern-strip { gap: 3px; }
}

@media (max-width: 520px) {
  .pcf-topline { grid-template-columns: 1fr; }
  .pcf-selector { grid-column: auto; }
  .pcf-choice { min-height: 50px; }
  .route-choice { overflow-x: auto; }
  .pcf-controls { grid-template-columns: 1fr 1fr; }
  .pcf-pattern-strip { height: 62px; padding: 6px; }
}