/* Doppler Scrub brand: tokens and components shared by the landing page and the app. */
/* Layout: a live spectrogram field opens the page (time runs left, frequency runs into depth);
     everything below is one narrow reading column with full-bleed bands for the demo and the compare. */
  :root {
    /* light: pale anechoic grey, ink field, signal magenta */
    --bg: #ecebf0;
    --surface: #f7f6f9;
    --ink: #17141f;
    --muted: #625e70;
    --line: #d5d2dd;
    --field: #2b2640;
    --signal: #d1136a;
    --head: #17141f;
    --display: "Big Shoulders Display", "Oswald", "Arial Narrow", Impact, sans-serif;
    --text: "Instrument Sans", "Helvetica Neue", Arial, sans-serif;
    --data: "Martian Mono", ui-monospace, "SF Mono", Menlo, monospace;
    --gutter-l: max(16px, env(safe-area-inset-left, 0px));
    --gutter-r: max(16px, env(safe-area-inset-right, 0px));
    color-scheme: light;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --bg: #0e0d13; --surface: #16141d; --ink: #f1eff6; --muted: #918da1; --line: #27242f;
      --field: #c6c0dc; --signal: #ff3d8b; --head: #f1eff6;
      color-scheme: dark;
    }
  }
  :root[data-theme="dark"] {
    --bg: #0e0d13; --surface: #16141d; --ink: #f1eff6; --muted: #918da1; --line: #27242f;
    --field: #c6c0dc; --signal: #ff3d8b; --head: #f1eff6;
    color-scheme: dark;
  }

  * { box-sizing: border-box; }
  body {
    background: var(--bg); color: var(--ink);
    font: 400 17px/1.55 var(--text);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a { color: inherit; }
  :focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 4px; }
  .wrap { max-width: 1120px; margin: 0 auto; padding-left: var(--gutter-l); padding-right: var(--gutter-r); }
  .col { max-width: 680px; }

  /* top bar */
  .bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 18px; position: relative; z-index: 3; }
  .mark { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 800 22px/1 var(--display); letter-spacing: .04em; text-transform: uppercase; }
  .mark svg { flex: none; }
  .bar nav { display: flex; gap: 20px; font: 500 12px/1 var(--data); text-transform: uppercase; letter-spacing: .08em; }
  .bar nav a { text-decoration: none; color: var(--muted); }
  .bar nav a:hover { color: var(--ink); }
  @media (max-width: 520px) { .bar nav a.opt { display: none; } }

  /* hero: the field */
  .hero { position: relative; }
  .hero h1 {
    font: 800 clamp(46px, 9.5vw, 128px)/.86 var(--display); text-transform: uppercase; letter-spacing: -.005em;
    margin: 8px 0 0; max-width: 11ch; text-wrap: balance; position: relative; z-index: 2;
  }
  .hero h1 em { font-style: normal; color: var(--signal); }
  .stage { position: relative; height: clamp(340px, 56vw, 600px); margin-top: clamp(-120px, -9vw, -40px); }
  .stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
  .stage .fallback { position: absolute; inset: 0; display: grid; place-items: center; color: var(--muted); font: 500 13px var(--data); }
  .tag {
    position: absolute; z-index: 2; font: 500 10.5px/1 var(--data); letter-spacing: .1em; text-transform: uppercase;
    color: var(--muted); white-space: nowrap; transform: translate(-50%, -50%); pointer-events: none;
  }
  .tag.head { color: var(--ink); }
  .tag.head::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--ink); margin-right: 7px; vertical-align: 1px; }
  .tag.hz { transform: translate(8px, -50%); }

  /* live readout under the field */
  .readout {
    display: grid; grid-template-columns: repeat(6, auto); justify-content: start; gap: 6px 28px;
    border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding-block: 14px; margin-top: 6px;
    font: 400 12px/1.3 var(--data); font-variant-numeric: tabular-nums;
  }
  .readout div { min-width: 0; }
  .readout span { display: block; color: var(--muted); font-size: 10px; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 4px; }
  .readout b { font-weight: 500; }
  .readout .sig { color: var(--signal); }
  @media (max-width: 760px) { .readout { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 16px; } }

  .controls { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 14px; }
  .seg { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; background: var(--surface); }
  .seg button {
    appearance: none; border: 0; background: transparent; color: var(--muted); font: 500 12px/1 var(--data);
    letter-spacing: .06em; text-transform: uppercase; padding: 9px 14px; border-radius: 999px; cursor: pointer;
  }
  .seg button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
  .controls p { margin: 0; color: var(--muted); font-size: 13px; }

  /* lede + actions */
  .lede { margin-top: 56px; display: grid; gap: 22px; }
  .lede p { margin: 0; font-size: clamp(18px, 2.1vw, 21px); line-height: 1.5; }
  .actions { display: flex; flex-wrap: wrap; gap: 12px; }
  .btn {
    display: inline-flex; align-items: center; gap: 10px; min-height: 50px; padding: 0 22px; border-radius: 999px;
    font: 600 16px/1 var(--text); text-decoration: none; border: 1px solid var(--line); background: var(--surface);
  }
  .btn.primary { background: var(--signal); border-color: transparent; color: #fff; }
  .btn small { font: 500 11px/1 var(--data); letter-spacing: .06em; text-transform: uppercase; opacity: .75; }

  /* sections */
  section.block { margin-top: 96px; }
  .eyebrow { font: 500 11px/1 var(--data); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
  h2 { font: 800 clamp(34px, 5.4vw, 64px)/.92 var(--display); text-transform: uppercase; margin: 0; max-width: 16ch; text-wrap: balance; }

  .steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin-top: 36px; border-top: 1px solid var(--ink); }
  .steps li { list-style: none; padding: 20px 24px 8px 0; display: grid; gap: 10px; align-content: start; }
  .steps li + li { padding-left: 24px; border-left: 1px solid var(--line); }
  .steps ol { margin: 0; padding: 0; display: contents; }
  .steps .n { font: 500 12px/1 var(--data); color: var(--muted); }
  .steps h3 { font: 700 26px/1 var(--display); text-transform: uppercase; margin: 0; letter-spacing: .01em; }
  .steps p { margin: 0; color: var(--muted); font-size: 15.5px; }
  .steps code { font: 500 13px var(--data); color: var(--ink); white-space: nowrap; }
  @media (max-width: 760px) {
    .steps { grid-template-columns: 1fr; }
    .steps li, .steps li + li { padding: 18px 0; border-left: 0; border-bottom: 1px solid var(--line); }
  }

  /* compare */
  .compare { margin-top: 32px; }
  .cmp { position: relative; height: clamp(200px, 30vw, 300px); border-radius: 14px; overflow: hidden; background: var(--surface); border: 1px solid var(--line); touch-action: pan-y; cursor: ew-resize; }
  .cmp canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
  .cmp .handle { position: absolute; top: 0; bottom: 0; width: 2px; background: var(--ink); transform: translateX(-1px); pointer-events: none; }
  .cmp .handle::after {
    content: ""; position: absolute; top: 50%; left: 50%; width: 30px; height: 30px; margin: -15px 0 0 -15px;
    border-radius: 50%; background: var(--ink);
    -webkit-mask: radial-gradient(circle, transparent 5px, #000 5.5px); mask: radial-gradient(circle, transparent 5px, #000 5.5px);
  }
  .cmp .lab { position: absolute; top: 12px; font: 500 10.5px/1 var(--data); letter-spacing: .12em; text-transform: uppercase; background: var(--bg); color: var(--ink); padding: 6px 9px; border-radius: 999px; }
  .cmp .lab.l { left: 12px; } .cmp .lab.r { right: 12px; }
  .cmp-range { width: 100%; margin-top: 14px; accent-color: var(--signal); }
  .compare figcaption { color: var(--muted); font-size: 14px; margin-top: 8px; max-width: 70ch; }

  .split { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; margin-top: 32px; }
  .split h3 { font: 500 11px/1 var(--data); letter-spacing: .14em; text-transform: uppercase; margin: 0 0 12px; color: var(--muted); }
  .split ul { list-style: none; margin: 0; padding: 0; }
  .split li { padding: 12px 0; border-top: 1px solid var(--line); display: flex; justify-content: space-between; gap: 16px; }
  .split li span { color: var(--muted); font: 400 12.5px var(--data); text-align: right; }
  .split .gone li b { text-decoration: line-through; text-decoration-color: var(--signal); text-decoration-thickness: 2px; font-weight: 500; }
  .split .kept li b { font-weight: 500; }
  @media (max-width: 760px) { .split { grid-template-columns: 1fr; gap: 28px; } }

  footer { margin-top: 110px; padding-block: 28px 40px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; color: var(--muted); font: 400 12px/1.5 var(--data); }

  @media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }

/* ------------------------------------------------------------------ app -- */
:root { --vf: #000000; }
.stage.band { height: clamp(120px, 17vw, 190px); margin-top: 0; -webkit-mask: linear-gradient(#000 70%, transparent); mask: linear-gradient(#000 70%, transparent); }
.app { padding-block: 4px 40px; }
.view { max-width: 780px; }
.view[hidden] { display: none !important; }
.title { font: 800 clamp(48px, 8.5vw, 92px)/.86 var(--display); text-transform: uppercase; margin: 0; text-wrap: balance; }
.sub { color: var(--muted); font-size: 18px; max-width: 54ch; margin: 14px 0 0; }
.fine { color: var(--muted); font-size: 13.5px; margin: 14px 0 0; max-width: 62ch; }
.app .error { color: var(--signal); font: 500 13px/1.5 var(--data); margin: 14px 0 0; }

.tiles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 30px; }
@media (max-width: 560px) { .tiles { grid-template-columns: 1fr; } }
.tile {
  appearance: none; text-align: left; font: inherit; color: var(--ink); cursor: pointer;
  display: grid; align-content: end; gap: 6px; min-height: 156px; padding: 22px;
  border-radius: 18px; border: 1px solid var(--line); background: var(--surface);
  transition: border-color .15s, transform .15s;
}
.tile:hover { border-color: var(--muted); transform: translateY(-2px); }
.tile b { font: 800 34px/.9 var(--display); text-transform: uppercase; letter-spacing: .01em; }
.tile small { font: 500 11px/1.4 var(--data); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.tile .ico { margin-bottom: auto; width: 28px; height: 28px; }
.tile.rec { background: var(--signal); border-color: transparent; color: #fff; }
.tile.rec small { color: rgba(255, 255, 255, .78); }
.tile.rec .ico { border-radius: 50%; border: 2px solid #fff; display: grid; place-items: center; }
.tile.rec .ico::after { content: ""; width: 12px; height: 12px; border-radius: 50%; background: #fff; animation: ds-pulse 1.6s ease-in-out infinite; }
@keyframes ds-pulse { 50% { transform: scale(.6); opacity: .6; } }

.switch { display: flex; gap: 12px; align-items: flex-start; margin-top: 22px; cursor: pointer; font-size: 15px; color: var(--muted); max-width: 62ch; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch .track { flex: none; width: 38px; height: 22px; border-radius: 999px; background: var(--line); position: relative; transition: background .15s; margin-top: 1px; }
.switch .track::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: var(--surface); transition: transform .15s; }
.switch input:checked + .track { background: var(--signal); }
.switch input:checked + .track::after { transform: translateX(16px); }
.switch input:focus-visible + .track { outline: 2px solid var(--signal); outline-offset: 2px; }
.switch b { color: var(--ink); font-weight: 600; }

.viewfinder { position: relative; border-radius: 18px; overflow: hidden; background: var(--vf); }
.viewfinder video { width: 100%; max-height: 64vh; display: block; object-fit: contain; }
.rec-time { position: absolute; top: 12px; left: 12px; background: var(--signal); color: #fff; font: 500 12px/1 var(--data); padding: 7px 10px; border-radius: 999px; font-variant-numeric: tabular-nums; }
.cam-controls { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; margin-top: 18px; }
.cam-controls .ghost:first-child { justify-self: start; } .cam-controls .ghost:last-child { justify-self: end; }
.ghost { appearance: none; background: none; border: 0; color: var(--muted); font: 500 12px/1 var(--data); letter-spacing: .08em; text-transform: uppercase; padding: 12px 8px; cursor: pointer; }
.ghost:hover { color: var(--ink); } .ghost:disabled { opacity: .4; cursor: default; }
.shutter { appearance: none; width: 78px; height: 78px; border-radius: 50%; border: 4px solid var(--ink); background: transparent; display: grid; place-items: center; cursor: pointer; padding: 0; }
.shutter span { width: 58px; height: 58px; border-radius: 50%; background: var(--signal); transition: all .2s; }
.shutter.on span { width: 28px; height: 28px; border-radius: 7px; }

.steps-live { list-style: none; margin: 30px 0 0; padding: 0; border-top: 1px solid var(--ink); }
.steps-live li { display: grid; grid-template-columns: 22px minmax(0, 1fr) auto; align-items: center; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
.steps-live .st { width: 12px; height: 12px; border-radius: 50%; border: 2px solid var(--line); }
.steps-live .nm { font: 700 24px/1 var(--display); text-transform: uppercase; letter-spacing: .01em; }
.steps-live .info { font: 400 12px/1 var(--data); font-variant-numeric: tabular-nums; text-align: right; }
.steps-live li.active { color: var(--ink); }
.steps-live li.active .st { border-color: var(--signal); border-right-color: transparent; animation: ds-spin .8s linear infinite; }
.steps-live li.done { color: var(--ink); }
.steps-live li.done .st { background: var(--ink); border-color: var(--ink); }
@keyframes ds-spin { to { transform: rotate(360deg); } }
.detail { font: 400 12.5px/1.5 var(--data); color: var(--muted); min-height: 1.5em; margin: 14px 0 0; }

.res-head { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 12px; margin-bottom: 20px; }
.player { border-radius: 18px; overflow: hidden; background: var(--vf); }
.player video { width: 100%; max-height: 62vh; display: block; }
.player audio { width: 100%; display: block; }
.app .actions { margin-top: 16px; }
.app button.btn { cursor: pointer; color: var(--ink); }
.app .btn.primary { color: #fff; }
.readout.four { grid-template-columns: repeat(4, auto); margin-top: 26px; }
@media (max-width: 760px) { .readout.four { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.spec-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin: 40px 0 14px; }
.spec-head .eyebrow { margin: 0; }
.mini { display: inline-flex; align-items: center; gap: 8px; font: 500 11px/1 var(--data); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); cursor: pointer; }
.mini input { accent-color: var(--signal); }
.cmp canvas.marks { pointer-events: none; }
.cmp.solo { cursor: default; }
.cmp.solo .handle, .cmp.solo .lab { display: none; }
.yaxis span { position: absolute; right: 10px; transform: translateY(-50%); font: 500 10px/1 var(--data); color: var(--muted); background: var(--bg); padding: 3px 6px; border-radius: 999px; pointer-events: none; }
.xaxis { display: flex; justify-content: space-between; font: 400 11px/1 var(--data); color: var(--muted); margin-top: 8px; }
.tracks { margin-top: 22px; }
.tracks summary { cursor: pointer; font: 500 11px/1 var(--data); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.tracks table { width: 100%; border-collapse: collapse; margin-top: 10px; font: 400 12.5px/1.4 var(--data); font-variant-numeric: tabular-nums; }
.tracks th { text-align: left; color: var(--muted); font-weight: 400; font-size: 10.5px; letter-spacing: .1em; text-transform: uppercase; padding: 8px 6px; border-bottom: 1px solid var(--ink); }
.tracks td { padding: 9px 6px; border-bottom: 1px solid var(--line); }
.tracks td.k { color: var(--signal); }

[hidden] { display: none !important; }

/* GitHub links and the open-source block */
.bar nav { align-items: center; gap: 22px; }
.bar nav a.gh {
  display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%;
  border: 1px solid var(--line); color: var(--ink); transition: border-color .15s;
}
.bar nav a.gh:hover { border-color: var(--muted); }
.bar nav a.cta {
  display: inline-flex; align-items: center; height: 36px; padding: 0 16px; border-radius: 999px;
  background: var(--signal); color: #fff; letter-spacing: .06em;
}
.bar nav a.cta:hover { color: #fff; filter: brightness(1.08); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.btn svg { flex: none; }
.oss .col { margin-top: 24px; display: grid; gap: 20px; }
.oss .col p { margin: 0; font-size: clamp(17px, 2vw, 19px); }
.oss pre { margin: 0; padding: 16px 18px; border-radius: 12px; background: var(--surface); border: 1px solid var(--line); overflow-x: auto; }
.oss code { font: 400 13px/1.7 var(--data); color: var(--ink); }
footer a { color: var(--ink); }
@media (max-width: 640px) { .bar nav a.opt { display: none; } .bar nav { gap: 10px; } }
.mark, .bar nav a.cta { white-space: nowrap; }
@media (max-width: 440px) { .mark { font-size: 18px; gap: 8px; } .mark svg { width: 24px; height: 24px; } .bar nav a.cta { padding: 0 13px; } }

/* ---------------------------------------------------------- phone fixes -- */
.eyebrow { line-height: 1.5; }
.stage { overflow: hidden; }
.btn { justify-content: center; }
@media (max-width: 560px) {
  .actions .btn { flex: 1 1 100%; }
  .readout { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tile { min-height: 112px; padding: 18px; }
  .tile b { font-size: 30px; }
  .spec-head { gap: 10px; }
}
@media (max-width: 380px) { .bar nav a.gh { display: none; } .mark { font-size: 17px; gap: 6px; } .bar nav a.cta { padding: 0 11px; letter-spacing: .02em; } }
@media (max-width: 760px) { .app .actions { display: grid; grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .app .actions { grid-template-columns: 1fr; } }