/* ─── Theme: every colour is light-dark(<light>, <dark>) ─── */
:root {
  color-scheme: light dark;
  --bg:         light-dark(#f4f6f6, #11181d);
  --card:       light-dark(#ffffff, #172128);
  --ink:        light-dark(#1f3342, #e6ebee);
  --muted:      light-dark(#5f6d75, #93a1a9);
  --line:       light-dark(#dde4e6, #26333b);
  --accent:     light-dark(#0f8b8d, #3cc0bd);
  --accent-ink: light-dark(#ffffff, #0b1215); /* text on accent buttons */
  --warn:       light-dark(#c0613a, #e08a62); /* raw data, gaps */
  --tint: color-mix(in srgb, var(--accent) 12%, transparent);
  --logo: url(logo/v3-mark.png);
  --logo-color: var(--ink);
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --radius: 12px;
  --width: 1120px;
}
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"]  { color-scheme: dark; }

/* ─── Base ─── */
* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--ink); font: 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { line-height: 1.12; letter-spacing: -.025em; font-weight: 600; }
h1 { font-size: clamp(2.3rem, 5vw, 3.4rem); }
h1 em { font-style: normal; color: var(--accent); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); margin-bottom: 2rem; }
h3 { font-size: 1.08rem; margin-bottom: .4rem; }
h4 { font-size: 1rem; margin-bottom: .3rem; }
p, li { color: var(--muted); }
section { padding: 5rem 0; }
.wrap { max-width: var(--width); margin: 0 auto; padding-inline: 1rem; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 1.2rem; }
.mono { font-family: var(--mono); }
.sr, .hp { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.eyebrow { font: 500 .78rem var(--mono); text-transform: uppercase; letter-spacing: .08em; color: var(--accent); margin-bottom: .9rem; }
.lead { font-size: 1.12rem; margin-top: 1.2rem; max-width: 34rem; }
.num { display: block; font: .8rem var(--mono); color: var(--accent); margin-bottom: .8rem; }
.checks { list-style: none; padding: 0; }
.checks li::before { content: "✓ "; color: var(--accent); }

/* ─── Header ─── */
.top { position: sticky; top: 0; z-index: 9; padding: .8rem 0; backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 80%, transparent); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: .5rem; font-weight: 500; text-transform: uppercase; letter-spacing: .12em; }
.logo { width: 45px; height: 30px; background: var(--logo-color);
  mask: var(--logo) center / contain no-repeat; -webkit-mask: var(--logo) center / contain no-repeat; }
.link { font-size: .92rem; color: var(--muted); }
.link:hover { color: var(--ink); }
.theme { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--line); border-radius: 50%;
  background: none; color: var(--ink); cursor: pointer; }
.theme:hover { border-color: var(--accent); }

/* ─── Buttons & form ─── */
.btn { font: 500 .95rem var(--font); padding: .7rem 1.2rem; border-radius: var(--radius); border: 1px solid var(--accent);
  background: var(--accent); color: var(--accent-ink); cursor: pointer; white-space: nowrap; transition: opacity .15s; }
.btn:hover { opacity: .88; }
.btn:disabled { opacity: .5; cursor: wait; }
.btn.ghost { background: none; color: var(--accent); padding: .45rem .9rem; }
.waitlist { display: flex; flex-wrap: wrap; gap: .5rem; max-width: 460px; margin-top: 2rem; }
.waitlist input { flex: 1 1 220px; font: inherit; color: var(--ink); background: var(--card);
  padding: .7rem 1rem; border: 1px solid var(--line); border-radius: var(--radius); }
.waitlist input:focus { border-color: var(--accent); outline: none; }
.status { flex-basis: 100%; font-size: .85rem; min-height: 1.4em; }
.status.ok { color: var(--accent); }
.status.err { color: var(--warn); }

/* ─── Hero + product preview ─── */
.hero { display: grid; grid-template-columns: 1.1fr 1fr; gap: 3.5rem; align-items: center; padding-top: 5.5rem; }
.hero > * { min-width: 0; }
.app { background: var(--card); border: 1px solid var(--line); border-radius: 16px; font-size: .85rem;
  box-shadow: 0 30px 60px -30px color-mix(in srgb, var(--ink) 25%, transparent); }
.bar { display: flex; gap: .4rem; align-items: center; padding: .7rem 1rem; border-bottom: 1px solid var(--line); }
.bar i { width: 9px; height: 9px; border-radius: 50%; background: var(--line); }
.bar span { margin-left: .6rem; font: .75rem var(--mono); color: var(--muted); }
.tabs { list-style: none; display: flex; flex-wrap: wrap; gap: .3rem; padding: .8rem 1rem 0; counter-reset: s; }
.tabs button { font: .8rem var(--font); color: var(--muted); background: none; border: 1px solid transparent; border-radius: 99px;
  padding: .3rem .75rem; cursor: pointer; counter-increment: s; }
.tabs button::before { content: counter(s) "  "; font-family: var(--mono); white-space: pre; }
.tabs button.done::before { content: "✓  "; color: var(--accent); }
.tabs button.on { color: var(--ink); border-color: var(--line); background: var(--bg); }
.pane { padding: 1rem 1rem .4rem; min-height: 15.5rem; overflow-x: auto; }
.pane:not(.on) { display: none; }
.pane > :not(.log), .log li { animation: rise .4s ease both; }
.log li:nth-child(2) { animation-delay: .35s; }
.log li:nth-child(3) { animation-delay: .7s; }
.log li:nth-child(4) { animation-delay: 1.05s; }
.log li:nth-child(5) { animation-delay: 1.4s; }
.pane .ready { animation-delay: 1.8s; }
@keyframes rise { from { opacity: 0; transform: translateY(4px); } }
.label { font-size: .75rem; color: var(--muted); margin: .5rem 0 .35rem; }
.field { padding: .55rem .75rem; border: 1px solid var(--accent); border-radius: 8px; background: var(--bg);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hint { color: var(--accent); font-size: .8rem; margin: .5rem 0 .8rem; }
table { width: 100%; border-collapse: collapse; font-size: .75rem; }
th, td { text-align: left; padding: .35rem .4rem; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--warn); font-weight: 500; }
td { color: var(--muted); }
.map { list-style: none; padding: 0; display: grid; gap: .45rem; }
.map li { display: grid; grid-template-columns: 5.5rem 1fr; align-items: center; gap: .8rem; }
.map span { display: flex; justify-content: space-between; color: var(--warn); }
.map span::after { content: "→"; color: var(--muted); }
.map b { font-weight: 500; color: var(--ink); padding: .35rem .6rem; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.map small { color: var(--accent); margin-left: .4rem; }
.chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.chips span { padding: .25rem .65rem; border-radius: 99px; background: var(--tint); color: var(--ink); font-size: .8rem; }
.chips .add { background: none; border: 1px dashed var(--line); color: var(--muted); }
.log { display: grid; gap: .4rem; font-size: .8rem; }
.log b { font-weight: 500; color: var(--ink); }
.ready { margin-top: 1rem; padding: .6rem .75rem; border-radius: 8px; background: var(--tint); color: var(--ink); }
.foot { display: flex; justify-content: space-between; align-items: center; padding: .8rem 1rem;
  border-top: 1px solid var(--line); font-size: .75rem; color: var(--muted); }
.foot .btn { font-size: .8rem; padding: .4rem .9rem; }

/* ─── How it works ─── */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.flow article, .group article { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.4rem; }
.flow p, .group p { font-size: .95rem; }
.flow .auto { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 7%, var(--card)); }

/* ─── Benefits: group label + cards (2 per row, .wide spans both), card = stage + title + line ─── */
.group { display: grid; grid-template-columns: 14rem 1fr; gap: 1rem; padding-block: 1.6rem; border-top: 1px solid var(--line); }
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.wide { grid-column: 1 / -1; }
.group header { padding-top: .4rem; }
.stage { height: 9.5rem; margin-bottom: 1.1rem; padding: 1rem; border-radius: 8px; background: var(--bg);
  display: flex; flex-direction: column; justify-content: center; gap: .4rem; overflow: hidden; font-size: .8rem; }
.stage li { color: var(--ink); }
.diff div { display: grid; grid-template-columns: 19ch 1fr auto; gap: .6rem; padding: .5rem .7rem; border-radius: 8px; white-space: nowrap; }
.diff .raw { color: var(--warn); background: color-mix(in srgb, var(--warn) 10%, transparent);
  text-decoration: line-through color-mix(in srgb, var(--warn) 40%, transparent); }
.diff .clean { background: var(--tint); }
.card-mini { display: grid; gap: .2rem; padding: .8rem; border: 1px solid var(--line); border-radius: 8px; background: var(--card); }
.card-mini span { color: var(--muted); }
.card-mini small { color: var(--accent); font-size: .72rem; }
.layers div { display: flex; justify-content: space-between; padding: .45rem .8rem; border-radius: 8px; border: 1px solid var(--line); background: var(--card); }
.layers div:first-child { border-color: var(--accent); color: var(--accent); }
.layers div:nth-child(2) { margin-inline: .4rem; }
.layers div:last-child { margin-inline: .8rem; color: var(--muted); }
.layers small { color: var(--muted); }
.dag, .chart { width: 100%; max-height: 100%; font: 11px var(--mono); }
.chart { font-size: 17px; } /* viewBox is drawn at ~0.7× */
.dag path { fill: none; stroke: var(--accent); stroke-width: 1.2; stroke-dasharray: 4 3; animation: dash 1s linear infinite; }
.dag rect { fill: var(--card); stroke: var(--line); }
.dag text { fill: var(--ink); text-anchor: middle; }
.dag .hl rect { stroke: var(--accent); fill: color-mix(in srgb, var(--accent) 12%, var(--card)); }
@keyframes dash { to { stroke-dashoffset: -7; } }
.chart polyline { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linejoin: round; }
.chart .gap { fill: color-mix(in srgb, var(--warn) 14%, transparent); }
.chart text { fill: var(--warn); text-anchor: middle; }
p code { font-size: .88em; color: var(--accent); }
pre { font: .8rem/1.7 var(--mono); overflow-x: auto; }
.k { color: var(--accent); }
.s { color: var(--warn); }
.catalog { gap: .25rem; line-height: 1.4; }
.catalog > div { display: grid; grid-template-columns: 1.4fr 1fr 1fr 7.5rem; gap: .8rem; padding: .3rem .7rem; white-space: nowrap; }
.catalog > div:nth-child(2) { border-radius: 8px; background: var(--tint); }
.catalog .search { display: block; margin-bottom: .2rem; padding: .4rem .7rem; border: 1px solid var(--accent); border-radius: 8px; background: var(--card); color: var(--muted); }
.catalog b, .viewer b { font-weight: 500; }
.catalog span, .viewer p span { color: var(--muted); }
.catalog small { color: var(--accent); text-align: right; }
.group .viewer p { display: flex; justify-content: space-between; font-size: inherit; color: var(--ink); }
.viewer th { color: var(--muted); }
.viewer td { color: var(--ink); }

/* ─── CTA & footer ─── */
.cta { text-align: center; }
.cta h2 { margin-bottom: 0; }
.cta .lead, .cta .waitlist { margin-inline: auto; }
.cta .waitlist { margin-top: 1.5rem; }
footer { padding-block: 2rem 3rem; border-top: 1px solid var(--line); font-size: .9rem; color: var(--muted); }
footer a:hover { color: var(--accent); }

/* ─── Responsive & motion ─── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 3.5rem; gap: 2.5rem; }
  .flow { grid-template-columns: 1fr 1fr; }
  .group { grid-template-columns: 1fr; }
  section { padding: 3.5rem 0; }
  .link { display: none; }
}
@media (max-width: 560px) {
  .flow, .cards { grid-template-columns: 1fr; }
  .catalog > div { grid-template-columns: 1fr auto; }
  .catalog span { display: none; }
  .tabs button { padding: .3rem .5rem; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; scroll-behavior: auto !important; } }