:root {
  --paper: #f6f3eb;
  --card: #fbf9f4;
  --rule: #e3ddcf;
  --grid: #ebe6da;
  --ink: #1f1d18;
  --ink-2: #5b574d;
  --ink-3: #8d887b;
  --ghost: #cfc9ba;
  --gate: #23756b;
  --gate-soft: rgba(35, 117, 107, 0.14);
  --comp: #c2482b;
  --comp-soft: rgba(194, 72, 43, 0.14);
  --serif: 'Fraunces', Georgia, serif;
  --sans: 'IBM Plex Sans', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --radius: 10px;
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body { margin: 0; min-height: 100vh; background: var(--paper); color: var(--ink); font: 15px/1.55 var(--sans); -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { opacity: .35; cursor: default; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--gate); outline-offset: 3px; }
[hidden] { display: none !important; }
.masthead, main, .foot { max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.masthead { padding-top: 36px; padding-bottom: 24px; }
h1 { font: 600 44px/1 var(--serif); letter-spacing: -.02em; margin: 0 0 8px; }
.lede { margin: 0; color: var(--ink-2); max-width: 60ch; }
.scope-panel { width: calc(100% + 48px); margin-left: -24px; background: var(--card); border-block: 1px solid var(--rule); padding: 16px 0 12px; }
/* Break the lab out of the centered page, without horizontal overflow. */
main { max-width: none; padding: 0; }
.scope-panel { width: 100%; margin-left: 0; }
.listen-bar, .legend { margin-inline: 24px; }
.listen-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 18px; margin-bottom: 16px; }
.listen-button { background: var(--ink); color: var(--paper); border: 0; border-radius: 7px; padding: 10px 16px; min-height: 44px; font-weight: 500; }
.segmented { display: inline-flex; border: 1px solid var(--rule); border-radius: 7px; overflow: hidden; }
.segmented button { color: var(--ink-2); border: 0; background: transparent; padding: 10px 12px; min-height: 44px; font-size: 13px; }
.segmented button + button { border-left: 1px solid var(--rule); }
.segmented button.on { background: var(--ink); color: var(--paper); }
.volume { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.volume input[type=range] { width: 100px; min-width: 70px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field-label { font: 500 11px/1 var(--mono); text-transform: uppercase; letter-spacing: .07em; color: var(--ink-3); }
.field-label output { color: var(--ink); margin-left: 4px; }
.noise-control { min-width: 150px; max-width: 190px; }
#audio-status { flex-basis: 100%; font-size: 12px; color: var(--ink-2); }
input[type=range] { appearance: none; width: 100%; height: 24px; background: transparent; margin: 0; accent-color: var(--accent, var(--ink)); }
input[type=range]::-webkit-slider-runnable-track { height: 2px; background: var(--ghost); }
input[type=range]::-moz-range-track { height: 2px; background: var(--ghost); }
input[type=range]::-webkit-slider-thumb { appearance: none; width: 14px; height: 14px; margin-top: -6px; border-radius: 50%; background: var(--card); border: 2px solid var(--accent, var(--ink)); }
input[type=range]::-moz-range-thumb { width: 10px; height: 10px; border-radius: 50%; background: var(--card); border: 2px solid var(--accent, var(--ink)); }
.scope-wrap { border-block: 1px solid var(--rule); }
canvas { display: block; width: 100%; }
.scope { height: 320px; }
.lanes { height: 96px; border-top: 1px solid var(--rule); }
.legend { list-style: none; display: flex; flex-wrap: wrap; gap: 6px 20px; margin-block: 10px 0; padding: 0; font-size: 12px; color: var(--ink-2); }
.legend li { display: flex; align-items: center; gap: 7px; }
.legend .hidden { display: none; }
.sw { display: inline-block; width: 18px; height: 10px; border-radius: 2px; }
.sw-in { background: var(--ghost); }
.sw-out { background: var(--ink); }
.sw-dash { height: 0; border-top: 2px dashed; border-radius: 0; }
.sw-dash.gate { border-color: var(--gate); }
.sw-dash.comp { border-color: var(--comp); }
.chain-editor { max-width: 1180px; margin: 24px auto 0; padding: 0 24px; }
.chain-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.chain-heading h2 { font: 600 25px/1.2 var(--serif); margin: 0; }
.board-button, .sheet-close, .sheet-actions button { background: var(--card); border: 1px solid var(--rule); border-radius: 6px; color: var(--ink); padding: 9px 12px; min-height: 44px; font-size: 13px; }
.chain-hint { margin: 8px 0 16px; color: var(--ink-2); font-size: 12px; }
.signal-path { display: grid; grid-template-columns: 36px minmax(0, 1fr) 36px; gap: 6px; align-items: start; }
.endpoint { display: flex; flex-direction: column; align-items: center; gap: 6px; font: 10px/1.2 var(--mono); text-transform: uppercase; color: var(--ink-2); padding-top: 26px; }
.endpoint i { width: 12px; height: 12px; border: 2px solid var(--ghost); border-radius: 50%; }
.endpoint-output { align-self: end; padding: 0 0 26px; }
.drop-area { border: 2px dashed var(--ghost); padding: 12px 10px; min-height: 126px; min-width: 0; transition: background .15s; }
.drop-area.drag-over { border-color: var(--gate); background: var(--gate-soft); }
#effect-order { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 8px; margin: 0; padding: 0; list-style: none; }
[data-type=gate] { --accent: var(--gate); }
[data-type=comp] { --accent: var(--comp); }
[data-type=drive] { --accent: #91632c; }
[data-type=delay] { --accent: #626a9b; }
#effect-order li { flex: 0 0 64px; min-width: 0; border: 1px solid var(--accent); border-top: 3px solid var(--accent); background: var(--card); border-radius: 4px; overflow: hidden; }
#effect-order li.off { border-color: var(--ghost); }
.pedal-top { display: flex; align-items: center; justify-content: space-between; height: 28px; }
.pedal-position { font: 10px/1 var(--mono); color: var(--ink-3); padding-left: 5px; }
.pedal-edit { border: 0; color: var(--accent); background: transparent; min-height: 28px; width: 38px; padding: 0; font-size: 11px; }
.pedal-toggle { border: 0; background: transparent; color: var(--ink); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; width: 100%; min-height: 44px; padding: 2px; }
.pedal-name { font-size: 11px; font-weight: 500; }
.pedal-led { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }
.off .pedal-led { background: var(--ghost); }
.off .pedal-name { color: var(--ink-3); }
.pedal-status { font: 9px/1 var(--mono); text-transform: uppercase; color: var(--ink-3); }
#effect-order .drag-handle { touch-action: none; cursor: grab; width: 100%; height: 24px; padding: 0; border: 0; border-top: 1px solid var(--rule); background: transparent; color: var(--ink-3); font-size: 16px; }
#effect-order .dragging { opacity: .5; }
#effect-order .drop-target { outline: 2px solid var(--accent); outline-offset: 2px; }
#empty-chain { margin: 18px 0; font-size: 13px; color: var(--ink-2); text-align: center; }
.order-status { color: var(--ink-2); font-size: 12px; margin: 12px 42px 0; }
.order-status:empty { display: none; }
.effect-dialog { color: var(--ink); background: var(--card); border: 1px solid var(--rule); border-radius: 12px; padding: 24px; width: min(620px, calc(100% - 32px)); max-height: 88dvh; overflow-y: auto; overscroll-behavior: contain; box-shadow: 0 16px 60px #1f1d1826; }
.effect-dialog::backdrop { background: #1f1d1860; }
.sheet-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 20px; }
.sheet-head h2 { font: 600 27px/1.2 var(--serif); margin: 5px 0 0; color: var(--accent, var(--ink)); }
.sheet-head p { color: var(--ink-2); font-size: 13px; margin: 8px 0 0; }
.sheet-close { flex: none; }
.settings-body { display: grid; grid-template-columns: minmax(0, 1fr) 210px; gap: 20px; }
.settings-body:has(figure[hidden]) { grid-template-columns: 1fr; }
.params { display: flex; flex-direction: column; gap: 12px; }
.param { display: flex; flex-direction: column; gap: 3px; }
.param-top { display: flex; justify-content: space-between; gap: 8px; }
.param-name { font-size: 14px; font-weight: 500; }
.param-val { font: 500 12px/1.6 var(--mono); }
.param-hint { font-size: 12px; color: var(--ink-3); }
.curve { margin: 0; }
.curve canvas { aspect-ratio: 1; background: var(--paper); border: 1px solid var(--rule); border-radius: 6px; }
.curve figcaption { display: flex; justify-content: space-between; gap: 8px; margin-top: 8px; font-size: 11px; }
.badge { color: var(--accent); text-transform: uppercase; font: 11px/1.5 var(--mono); }
.readout { font: 11px/1.5 var(--mono); }
.explain { border-top: 1px solid var(--rule); padding-top: 16px; margin: 20px 0; color: var(--ink-2); font-size: 13px; }
.sheet-actions { display: flex; flex-wrap: wrap; gap: 8px; }
#remove-pedal { margin-left: auto; color: var(--comp); }
.remove-confirm { width: min(440px, calc(100% - 32px)); }
.remove-confirm h2 { font: 600 24px/1.2 var(--serif); margin: 0 0 8px; }
.remove-confirm p { color: var(--ink-2); margin: 0 0 20px; }
#confirm-remove { margin-left: auto; border-color: var(--comp); background: var(--comp); color: var(--card); }
#effect-choices { display: grid; gap: 10px; }
#effect-choices button { display: grid; grid-template-columns: 1fr auto; gap: 5px 12px; padding: 16px; border: 1px solid var(--rule); border-left: 3px solid var(--accent); background: var(--paper); border-radius: 6px; text-align: left; color: var(--ink); }
#effect-choices strong { font-weight: 500; color: var(--accent); }
#effect-choices span:first-of-type { grid-row: 2; font-size: 12px; color: var(--ink-2); }
#effect-choices span:last-child { grid-column: 2; grid-row: 1 / span 2; align-self: center; font-size: 24px; color: var(--accent); }
.foot { padding-top: 28px; padding-bottom: 40px; color: var(--ink-3); font-size: 12px; }
@media (max-width: 560px) {
  .masthead, .foot, .chain-editor { padding-left: 16px; padding-right: 16px; }
  h1 { font-size: 36px; }
  .listen-bar, .legend { margin-left: 16px; margin-right: 16px; }
  .volume, .noise-control { flex: 1; }
  .scope { height: 240px; }
  .signal-path { grid-template-columns: 28px minmax(0, 1fr) 28px; gap: 4px; }
  .endpoint { font-size: 9px; }
  .drop-area { padding: 10px 6px; }
  #effect-order { gap: 6px; }
  #effect-order li { flex-basis: 62px; }
  .effect-dialog { margin: auto 0 0; width: 100%; max-width: none; max-height: 88dvh; border-radius: 14px 14px 0 0; padding: 20px 16px calc(20px + env(safe-area-inset-bottom)); }
  .settings-body { grid-template-columns: 1fr; }
  .curve { width: min(240px, 100%); margin-inline: auto; }
  .order-status { margin-left: 32px; margin-right: 32px; }
}

.masthead { padding-top: 20px; padding-bottom: 14px; }
.lede { font-size: 13px; }
.scope { height: 250px; }
.lab-tools { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 14px; padding: 0 24px 10px; color: var(--ink-2); font-size: 12px; }
.lab-tools label { display: flex; align-items: center; gap: 6px; }
.lab-tools select, .lab-tools button { background: var(--card); color: var(--ink); border: 1px solid var(--rule); padding: 7px 9px; border-radius: 5px; min-height: 36px; }
#inspect-point { max-width: 190px; }
#scope-caption { color: var(--ink-3); }
.board-actions { display: flex; gap: 8px; }
.comparison-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-top: 10px; }
.comparison-bar label { display: flex; align-items: center; gap: 5px; font-size: 12px; }
.comparison-bar input { accent-color: var(--gate); }
#save-status { font-size: 11px; color: var(--ink-3); }
#share-link { display: block; width: 100%; padding: 12px; border: 1px solid var(--rule); background: var(--paper); color: var(--ink); margin-top: 10px; }
#inspect-pedal { margin-bottom: 14px; }
@media (max-width: 560px) {
  .masthead { padding-top: 14px; padding-bottom: 12px; }
  h1 { font-size: 30px; margin-bottom: 5px; }
  .lede { font-size: 12px; line-height: 1.4; }
  .listen-bar { gap: 8px 12px; margin-bottom: 10px; }
  #audio-status { display: none; }
  .lab-tools { padding-inline: 16px; gap: 6px 10px; }
  #scope-caption { flex-basis: 100%; }
  .scope { height: 180px; }
  .chain-editor { margin-top: 16px; }
  .chain-heading h2 { font-size: 21px; }
  .board-button { padding-inline: 9px; font-size: 12px; }
  .chain-hint { margin-block: 8px 10px; }
  #save-status { flex-basis: 100%; }
}