:root {
  color-scheme: light;
  --paper: #eef0e4;
  --paper-strong: #f7f5e9;
  --ink: #111111;
  --muted: #3d3d39;
  --blue: #3158b8;
  --red: #f13b2f;
  --yellow: #e8ee35;
  --black: #050505;
  --line: rgba(49, 88, 184, 0.72);
  --grid: rgba(49, 88, 184, 0.08);
  --shadow: 10px 10px 0 rgba(17, 17, 17, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px),
    var(--paper);
  background-size: 12px 12px;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.brand-bar {
  position: relative;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px max(16px, calc((100vw - 1180px) / 2));
  border-bottom: 2px solid var(--blue);
  background: rgba(238, 240, 228, 0.92);
  color: var(--ink);
  font-size: 0.85rem;
  font-weight: 800;
}

.brand-mark {
  color: var(--ink);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.brand-bar::before {
  content: "";
  width: 42px;
  height: 70px;
  position: absolute;
  left: max(16px, calc((100vw - 1180px) / 2));
  top: 52px;
  background:
    linear-gradient(90deg, var(--blue) 0 33%, var(--yellow) 33% 66%, transparent 66%),
    linear-gradient(var(--black), var(--black));
  background-size: 100% 44%, 66% 52%;
  background-position: top left, bottom left;
  background-repeat: no-repeat;
}

.brand-bar::after {
  content: "";
  width: 34px;
  height: 34px;
  position: absolute;
  left: calc(max(16px, calc((100vw - 1180px) / 2)) + 24px);
  top: 88px;
  border-radius: 50%;
  background: var(--red);
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 92px 0 38px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(4.2rem, 12vw, 10rem);
  line-height: 0.78;
  letter-spacing: 0;
}

.transport {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 18px;
  align-items: center;
  padding: 18px;
  border: 2px solid var(--blue);
  background: var(--paper-strong);
  box-shadow: var(--shadow);
}

.listening-lab {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 20px;
  align-items: start;
  margin-top: 16px;
  padding: 20px;
  border: 2px solid var(--blue);
  background: rgba(247, 245, 233, 0.78);
}

.listening-lab h2 {
  margin: 0;
  font-size: 1.35rem;
}

.panel-label {
  margin: 0 0 10px;
  color: var(--red);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.preset-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.preset-button {
  min-height: 44px;
  border: 2px solid var(--blue);
  background: var(--paper-strong);
  color: var(--ink);
  cursor: pointer;
  font-weight: 850;
}

.preset-button:hover,
.preset-button.is-active {
  border-color: var(--black);
  background: var(--yellow);
}

.preset-hint {
  min-height: 68px;
  margin: 14px 0 0;
  color: var(--muted);
  line-height: 1.45;
}

.play-button {
  width: 74px;
  height: 74px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--red);
  color: var(--paper-strong);
  cursor: pointer;
}

.play-button:hover {
  transform: translateY(-1px);
}

.play-icon {
  width: 0;
  height: 0;
  border-top: 13px solid transparent;
  border-bottom: 13px solid transparent;
  border-left: 20px solid currentColor;
  margin-left: 5px;
}

.play-button.is-playing .play-icon {
  width: 22px;
  height: 28px;
  border: solid currentColor;
  border-width: 0 7px;
  margin-left: 0;
}

.time-block {
  min-width: 0;
}

.time-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.seek {
  width: 100%;
  accent-color: var(--blue);
}

canvas {
  width: 100%;
  display: block;
}

.track-lab {
  position: relative;
  border: 2px solid var(--blue);
  background: rgba(247, 245, 233, 0.84);
  box-shadow: var(--shadow);
}

.track-lab::after {
  content: "";
  position: absolute;
  right: 26px;
  top: -50px;
  width: 148px;
  height: 148px;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--red) 0 28%, transparent 29%),
    repeating-radial-gradient(circle at center, transparent 0 9px, rgba(238, 240, 228, 0.22) 10px 11px),
    var(--black);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.08);
}

.track-lab-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 440px);
  gap: 24px;
  align-items: center;
  padding: 22px;
  border-bottom: 2px solid var(--blue);
}

.track-lab-head h2 {
  margin: 0;
  max-width: 660px;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 1.05;
  font-weight: 950;
}

.track-lab-head p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.5;
}

.wave-tracks {
  display: grid;
}

.wave-track {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  min-height: 132px;
  border-bottom: 2px solid var(--blue);
  transition: opacity 160ms ease, background 160ms ease;
}

.wave-track:last-child {
  border-bottom: 0;
}

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

.wave-control {
  display: grid;
  align-content: center;
  gap: 10px;
  padding: 18px;
  border-right: 2px solid var(--blue);
  background: rgba(238, 240, 228, 0.82);
}

.wave-control p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.4;
}

.track-power {
  display: grid;
  grid-template-columns: 44px 12px 1fr;
  gap: 10px;
  align-items: center;
  color: var(--ink);
  font-weight: 900;
  cursor: pointer;
}

.track-power input {
  appearance: none;
  width: 44px;
  height: 26px;
  margin: 0;
  border: 2px solid var(--blue);
  border-radius: 999px;
  background: var(--paper);
  position: relative;
}

.track-power input::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  top: 3px;
  left: 4px;
  border-radius: 50%;
  background: var(--black);
  transition: transform 160ms ease, background 160ms ease;
}

.track-power input:checked::after {
  transform: translateX(17px);
  background: var(--red);
}

.power-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--black);
}

.track-power input:checked + .power-dot {
  background: var(--red);
  box-shadow: none;
}

.wave-button {
  position: relative;
  min-width: 0;
  padding: 0;
  border: 0;
  background: var(--paper-strong);
  cursor: pointer;
}

.wave-button::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, rgba(49, 88, 184, 0.16) 0 1px, transparent 1px 64px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.2), transparent);
  pointer-events: none;
}

.waveform {
  position: relative;
  z-index: 1;
  height: 132px;
}

.feature-panel {
  border: 2px solid var(--blue);
  background: rgba(247, 245, 233, 0.78);
}

.feature-panel p {
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 0;
}

.explainer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.feature-panel {
  padding: 18px;
}

.feature-panel h2 {
  margin-bottom: 12px;
  font-size: 1.45rem;
  line-height: 1.1;
  letter-spacing: 0;
}

.reverb-panel {
  border-top: 8px solid var(--red);
}

.dx7-panel {
  border-top: 8px solid var(--blue);
}


code {
  color: var(--ink);
  background: var(--paper-strong);
  padding: 0.12em 0.35em;
  border-radius: 4px;
}

.audio-bank {
  display: none;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 2px solid var(--blue);
  color: var(--muted);
}

.site-footer strong {
  color: var(--ink);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

@media (max-width: 860px) {
  .shell {
    width: min(100% - 24px, 680px);
    padding-top: 76px;
  }

  .track-lab-head,
  .wave-track,
  .listening-lab,
  .explainer-grid {
    grid-template-columns: 1fr;
  }

  .brand-bar {
    position: static;
    padding-inline: 12px;
  }

  .brand-bar::before {
    left: 12px;
    top: 56px;
    transform: scale(0.78);
    transform-origin: top left;
  }

  .brand-bar::after {
    left: 32px;
    top: 84px;
    transform: scale(0.78);
    transform-origin: top left;
  }

  .track-lab::after {
    width: 86px;
    height: 86px;
    right: 14px;
    top: -34px;
  }

  .transport {
    grid-template-columns: 62px 1fr;
  }

  .play-button {
    width: 62px;
    height: 62px;
  }

  .wave-control {
    border-right: 0;
    border-bottom: 2px solid var(--blue);
  }

  .waveform {
    height: 104px;
  }

  .site-footer {
    display: grid;
  }
}