/* laneten.app — one stylesheet for every page.
   Tokens follow the SSv5 design kit (_design-kit/ssv5-ui.css): oklch surfaces tinted by
   --accent-h, Hanken Grotesk for UI, IBM Plex Mono for numbers. The site's own accent is
   pool blue (250); an app's section sets its kit hue (Meet Sheets = 305, accent-map.json). */

@font-face { font-family: "Hanken Grotesk"; font-weight: 400; font-display: swap; src: url("../fonts/hanken-grotesk-400.woff2") format("woff2"); }
@font-face { font-family: "Hanken Grotesk"; font-weight: 600; font-display: swap; src: url("../fonts/hanken-grotesk-600.woff2") format("woff2"); }
@font-face { font-family: "Hanken Grotesk"; font-weight: 700; font-display: swap; src: url("../fonts/hanken-grotesk-700.woff2") format("woff2"); }
@font-face { font-family: "Hanken Grotesk"; font-weight: 800; font-display: swap; src: url("../fonts/hanken-grotesk-800.woff2") format("woff2"); }
@font-face { font-family: "IBM Plex Mono"; font-weight: 500; font-display: swap; src: url("../fonts/ibm-plex-mono-500.woff2") format("woff2"); }

:root {
  --accent-h: 250;
  --accent-c: 0.17;
}
/* An app's section sets its kit hue; the token blocks below are declared on it too,
   because a custom property built from var(--accent-h) resolves where it is declared. */
.app-meet-sheets { --accent-h: 305; --accent-c: 0.19; }

:root, .app-meet-sheets {
  --font-ui: "Hanken Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-num: "IBM Plex Mono", "SF Mono", Menlo, Consolas, monospace;

  --bg: oklch(98.5% 0.004 var(--accent-h));
  --surface: oklch(100% 0 0);
  --surface-2: oklch(95.5% 0.008 var(--accent-h));
  --line: oklch(89% 0.01 var(--accent-h));
  --text: oklch(22% 0.02 var(--accent-h));
  --muted: oklch(46% 0.02 var(--accent-h));
  --accent: oklch(52% var(--accent-c) var(--accent-h));
  --accent-hover: oklch(46% var(--accent-c) var(--accent-h));
  --accent-text: oklch(45% var(--accent-c) var(--accent-h));
  --accent-soft: oklch(52% var(--accent-c) var(--accent-h) / 0.11);
  --on-accent: oklch(99% 0.004 var(--accent-h));
  --rope-a: oklch(56% 0.17 250);
  --rope-b: oklch(72% 0.15 85);
  --shadow: 0 1px 2px oklch(20% 0.02 var(--accent-h) / 0.06), 0 8px 24px oklch(20% 0.02 var(--accent-h) / 0.08);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root, .app-meet-sheets {
    --bg: oklch(15% 0.012 var(--accent-h));
    --surface: oklch(19.5% 0.014 var(--accent-h));
    --surface-2: oklch(23% 0.016 var(--accent-h));
    --line: oklch(30% 0.018 var(--accent-h));
    --text: oklch(94% 0.008 var(--accent-h));
    --muted: oklch(73% 0.015 var(--accent-h));
    --accent: oklch(66% var(--accent-c) var(--accent-h));
    --accent-hover: oklch(72% var(--accent-c) var(--accent-h));
    --accent-text: oklch(78% 0.13 var(--accent-h));
    --accent-soft: oklch(66% var(--accent-c) var(--accent-h) / 0.16);
    --on-accent: oklch(16% 0.02 var(--accent-h));
    --shadow: 0 1px 2px oklch(0% 0 0 / 0.3), 0 10px 30px oklch(0% 0 0 / 0.35);
    color-scheme: dark;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 400 1.0625rem/1.6 var(--font-ui);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-text); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
h1, h2, h3 { line-height: 1.15; text-wrap: balance; margin: 0; letter-spacing: -0.015em; }
h1 { font-weight: 800; font-size: clamp(2.25rem, 1.6rem + 3vw, 3.5rem); }
h2 { font-weight: 800; font-size: clamp(1.6rem, 1.3rem + 1.4vw, 2.2rem); }
h3 { font-weight: 700; font-size: 1.2rem; }
p { margin: 0; }
.mono { font-family: var(--font-num); font-weight: 500; font-variant-numeric: tabular-nums; }
.lede { font-size: 1.2rem; color: var(--muted); max-width: 40ch; }
.muted { color: var(--muted); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; z-index: 10; background: var(--surface); padding: 8px 12px; }

.wrap {
  width: 100%; max-width: 1120px; margin: 0 auto;
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}

/* Lane rope: the floats that divide lanes, as the band under the header. */
.rope {
  height: 6px;
  background: repeating-linear-gradient(90deg, var(--rope-a) 0 22px, var(--rope-b) 22px 30px, var(--rope-a) 30px 52px, transparent 52px 56px);
  opacity: 0.9;
}

.site-header { background: var(--surface); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 800; font-size: 1.2rem; letter-spacing: -0.01em; }
.brand:hover { color: var(--text); }
.brand-mark { width: 30px; height: 30px; flex: none; }
.nav { display: flex; gap: 4px 18px; flex-wrap: wrap; font-weight: 600; font-size: 0.98rem; }
.nav a { color: var(--muted); text-decoration: none; padding: 6px 2px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--text); }
.nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }

main { display: block; }
section { padding-block: clamp(48px, 6vw, 88px); }
section + section { border-top: 1px solid var(--line); }
.stack { display: flex; flex-direction: column; gap: 16px; }
.stack-lg { display: flex; flex-direction: column; gap: 28px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 10px 20px; border-radius: 10px;
  font: 700 1rem/1.2 var(--font-ui); text-decoration: none; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
  transition: background-color .15s, border-color .15s, transform .15s;
}
.btn:hover { border-color: var(--accent); color: var(--text); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }
.btn svg { width: 20px; height: 20px; flex: none; }
.btn small { display: block; font: 500 0.75rem/1.2 var(--font-num); opacity: 0.85; }
.btn[aria-disabled="true"] { opacity: 0.55; pointer-events: none; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* Home hero */
.hero { padding-block: clamp(40px, 5vw, 72px); }
.hero .wrap { display: grid; gap: 18px; }
.hero h1 { max-width: 20ch; }

/* App feature (home) and product header (app page) */
.feature { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: clamp(28px, 4vw, 56px); align-items: center; }
.app-title { display: flex; align-items: center; gap: 16px; }
.app-title img { width: 72px; height: 72px; }
.app-title .eyebrow { margin-bottom: 4px; }
.facts { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.facts li { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 10px; }
.facts li::before { content: ""; width: 10px; height: 10px; margin-top: 0.55em; border-radius: 3px; background: var(--accent); }
.shot { border-radius: 12px; border: 1px solid var(--line); box-shadow: var(--shadow); overflow: hidden; background: var(--surface); }
.dl-note { font-size: 0.92rem; color: var(--muted); }
.dl-note .mono { color: var(--text); }

/* Other apps */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 22px; }
.other-app { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 20px; align-items: start; max-width: 760px; }
.other-app img { width: 88px; height: 88px; }
.platforms { font: 500 0.8rem/1.2 var(--font-num); color: var(--muted); letter-spacing: 0.04em; }

/* Outputs (app page) */
.outputs { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.output { display: flex; flex-direction: column; gap: 12px; }
.output figure { margin: 0; background: var(--surface-2); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.output figure img { border-radius: 4px; box-shadow: 0 1px 3px oklch(0% 0 0 / 0.18); background: #fff; aspect-ratio: 210 / 297; object-fit: cover; object-position: top; }
.output h3 { font-size: 1.1rem; }

/* How-to steps (app page) */
.steps { list-style: none; padding: 0; margin: 0; display: grid; gap: clamp(36px, 5vw, 64px); counter-reset: step; }
.step { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: clamp(20px, 3vw, 44px); align-items: start; counter-increment: step; }
.step-text { display: flex; flex-direction: column; gap: 10px; }
.step-text h3::before { content: counter(step); display: inline-grid; place-items: center; width: 34px; height: 34px; margin-right: 12px; border-radius: 50%; background: var(--accent-soft); color: var(--accent-text); font: 500 1rem/1 var(--font-num); vertical-align: 2px; }
.step-text ul { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }

/* Two-column info blocks */
.cols { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.cols .card h3 { margin-bottom: 10px; }
.cols .card ol, .cols .card ul { margin: 10px 0 0; padding-left: 1.3em; display: grid; gap: 6px; }
kbd, .ui { font: 600 0.92em var(--font-ui); background: var(--surface-2); border: 1px solid var(--line); border-radius: 6px; padding: 1px 6px; white-space: nowrap; }

/* Prose pages */
.prose { max-width: 68ch; display: flex; flex-direction: column; gap: 18px; }
.prose h2 { margin-top: 18px; font-size: 1.5rem; }
.prose ul { margin: 0; padding-left: 1.3em; display: grid; gap: 8px; }
.prose table { border-collapse: collapse; width: 100%; font-size: 0.97rem; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.prose th { font: 500 0.78rem var(--font-num); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.email { font: 700 1.25rem var(--font-ui); }

.site-footer { background: var(--surface); border-top: 1px solid var(--line); margin-top: 0; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 10px 28px; justify-content: space-between; padding-block: 28px; font-size: 0.93rem; color: var(--muted); }
.site-footer nav { display: flex; gap: 6px 20px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }

@media (max-width: 860px) {
  .feature, .step { grid-template-columns: minmax(0, 1fr); }
  .outputs { grid-template-columns: minmax(0, 1fr); max-width: 420px; }
  .cols { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 520px) {
  .other-app { grid-template-columns: minmax(0, 1fr); }
  .btn-row .btn { flex: 1 1 100%; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }

code { font: 500 0.88em var(--font-num); background: var(--surface-2); border: 1px solid var(--line); border-radius: 5px; padding: 0 5px; overflow-wrap: anywhere; }
.card .muted { margin-top: 12px; }