/* PurityChecks site styles. Tokens mirror the PurityChecks design system. */

@font-face { font-family: "Geist"; src: url("/assets/fonts/Geist-Variable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("/assets/fonts/GeistMono-Variable.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }

:root {
  --bg: #FBFBF8; --surface: #FFFFFF; --surface-sunken: #F1F3F0;
  --border: #D9DED9; --border-strong: #4A5A52;
  --ink: #16211B; --ink-muted: #4A5A52;
  --brand: #24557F; --brand-hover: #1B4366; --on-brand: #FBFBF8;
  --highlight: #F5C518; --highlight-hover: #E0B000; --on-highlight: #16211B;
  --focus: #24557F;
  --pass: #24557F; --pass-bg: #E8EEF4;
  --watch: #8A5A00; --watch-bg: #FBF1D9;
  --fail: #B42318; --fail-bg: #FBE9E7;
  --band: #16211B; --on-band: #FBFBF8; --on-band-muted: #B8C2BC;
  --font-sans: "Geist", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Geist Mono", ui-monospace, Menlo, monospace;
  --radius: 2px;
  --wrap: 1200px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111A15; --surface: #16211B; --surface-sunken: #0C130F;
    --border: #34413A; --border-strong: #8A9A91;
    --ink: #F3F5F1; --ink-muted: #B8C2BC;
    --brand: #8DB4D9; --brand-hover: #B3CDE6; --on-brand: #111A15;
    --highlight-hover: #FFD54A;
    --focus: #8DB4D9;
    --pass: #8DB4D9; --pass-bg: #1B2C3B;
    --watch: #E9A23B; --watch-bg: #33280F;
    --fail: #F28B7D; --fail-bg: #3A1D1A;
    --band: #0C130F;
  }
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
#verify-result:focus, main:focus, #form-status:focus { outline: none; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.55 var(--font-sans); }
img, svg { display: block; max-width: 100%; }
a { color: var(--brand); text-underline-offset: 3px; }
a:hover { color: var(--brand-hover); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
h1, h2, h3 { margin: 0; font-weight: 600; text-wrap: balance; }
h1 { font-size: clamp(34px, 5vw, 48px); line-height: 1.08; letter-spacing: -0.03em; }
h1.display { font-size: clamp(40px, 6.4vw, 60px); line-height: 1.03; letter-spacing: -0.04em; }
h2 { font-size: clamp(24px, 3vw, 30px); line-height: 1.2; letter-spacing: -0.02em; }
h3 { font-size: 20px; line-height: 1.4; letter-spacing: -0.01em; }
p { margin: 0; text-wrap: pretty; }
.lead { font-size: 18px; line-height: 1.55; max-width: 62ch; }
.muted { color: var(--ink-muted); }
.mono { font-family: var(--font-mono); }
.label { font: 500 12px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-muted); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--highlight); color: var(--on-highlight); padding: 10px 14px; border-radius: var(--radius); font-weight: 500; }
.skip:focus { top: 12px; }

.wrap { width: 100%; max-width: calc(var(--wrap) + 64px); margin: 0 auto; padding: 0 32px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }
.section { padding: 64px 0; }
.section--tint { background: var(--surface-sunken); }
.section--rule { border-top: 1px solid var(--border); }
.stack { display: flex; flex-direction: column; gap: 16px; }
.stack-lg { display: flex; flex-direction: column; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 40px; }
@media (max-width: 900px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } .section { padding: 48px 0; } }

/* Header */
.site-header { border-bottom: 1px solid var(--border); background: var(--bg); position: relative; z-index: 10; }
.site-header .wrap { display: flex; align-items: center; gap: 32px; min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; }
.brand span { font-size: 20px; font-weight: 600; letter-spacing: -0.04em; }
.brand:hover { color: var(--ink); }
.nav { display: flex; align-items: center; gap: 24px; flex-grow: 1; }
.nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 24px; }
.nav a { color: var(--ink); text-decoration: none; font-size: 15px; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--brand); }
.nav a[aria-current="page"] { font-weight: 600; }
.nav .actions { margin-left: auto; display: flex; align-items: center; gap: 20px; }
.nav .actions .link { color: var(--brand); text-decoration: underline; font-weight: 500; }
.menu-toggle { display: none; margin-left: auto; width: 44px; height: 44px; border: 1px solid var(--border-strong); border-radius: var(--radius); background: transparent; color: var(--ink); align-items: center; justify-content: center; cursor: pointer; }
@media (max-width: 960px) {
  .menu-toggle { display: inline-flex; }
  .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); flex-direction: column; align-items: stretch; padding: 16px; gap: 16px; }
  .nav.open { display: flex; }
  .nav ul { flex-direction: column; gap: 0; }
  .nav ul a { display: block; padding: 12px 4px; border-bottom: 1px solid var(--border); }
  .nav .actions { margin-left: 0; flex-direction: column; align-items: stretch; }
  .nav .actions .btn { justify-content: center; }
}

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 18px; border: 1.5px solid transparent; border-radius: var(--radius); font: 500 15px/1 var(--font-sans); text-decoration: none; cursor: pointer; white-space: nowrap; }
.btn--primary { background: var(--highlight); color: var(--on-highlight); }
.btn--primary:hover { background: var(--highlight-hover); color: var(--on-highlight); }
.btn--brand { background: var(--brand); color: var(--on-brand); }
.btn--brand:hover { background: var(--brand-hover); color: var(--on-brand); }
.btn--secondary { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn--secondary:hover { background: var(--surface-sunken); color: var(--ink); }
.btn--on-dark { background: transparent; color: var(--on-band); border-color: var(--on-band); }
.btn--on-dark:hover { color: var(--on-band); background: rgba(255,255,255,0.08); }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* Forms */
.field { display: flex; flex-direction: column; gap: 6px; }
.field label, .field legend { font: 500 12px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink); }
.input, select.input, textarea.input { width: 100%; min-height: 44px; padding: 0 12px; border: 1px solid var(--border-strong); border-radius: var(--radius); background: var(--surface); color: var(--ink); font: 400 16px/1.4 var(--font-sans); }
textarea.input { min-height: 120px; padding: 10px 12px; resize: vertical; }
.input--mono { font-family: var(--font-mono); }
.input::placeholder { color: var(--ink-muted); }
.input:focus { outline: 2px solid var(--focus); outline-offset: 1px; }
.input[aria-invalid="true"] { border: 2px solid var(--fail); }
.hint { font-size: 14px; color: var(--ink-muted); }
.error { display: flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 500; color: var(--fail); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.check { display: flex; align-items: center; gap: 10px; min-height: 36px; font-size: 15px; cursor: pointer; }
.check input { width: 18px; height: 18px; margin: 0; accent-color: var(--brand); }
fieldset { margin: 0; padding: 0; border: 0; }

/* Badges */
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border: 1px solid currentColor; border-radius: var(--radius); font: 500 12px/18px var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; white-space: nowrap; }
.badge svg { width: 14px; height: 14px; }
.badge--pass { color: var(--pass); background: var(--pass-bg); }
.badge--watch { color: var(--watch); background: var(--watch-bg); }
.badge--fail { color: var(--fail); background: var(--fail-bg); }
.badge--soon { color: var(--ink-muted); border-style: dashed; }
.badge--demo { color: var(--on-highlight); background: var(--highlight); border-color: var(--on-highlight); }

/* Alerts */
.alert { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border: 1px solid; border-radius: var(--radius); font-size: 15px; line-height: 1.55; }
.alert svg { flex-shrink: 0; margin-top: 3px; width: 18px; height: 18px; }
.alert--info { background: var(--pass-bg); border-color: var(--brand); }
.alert--info svg { color: var(--brand); }
.alert--watch { background: var(--watch-bg); border-color: var(--watch); }
.alert--watch svg { color: var(--watch); }
.alert--fail { background: var(--fail-bg); border-color: var(--fail); }
.alert--fail svg { color: var(--fail); }
.demo-bar { background: var(--highlight); color: var(--on-highlight); border-bottom: 1px solid #16211B; font-size: 15px; padding: 12px 0; }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 12px; }
.card .methods { font: 400 13px/1.5 var(--font-mono); color: var(--ink-muted); }
.card .more { margin-top: auto; font-weight: 500; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.stat .figure { font: 500 40px/1.1 var(--font-mono); letter-spacing: -0.02em; }
.stat cite { margin-top: auto; font: 400 13px/1.5 var(--font-mono); color: var(--ink-muted); font-style: normal; }

/* Hero */
.hero { padding: 72px 0 64px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 56px; align-items: stretch; }
.hero-copy { display: flex; flex-direction: column; gap: 20px; }
.hero-copy .status { margin-top: auto; font: 400 14px/1.5 var(--font-mono); color: var(--ink-muted); }
.hero-visual { background-color: var(--surface); background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px); background-size: 32px 32px; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; justify-content: flex-end; min-height: 340px; }
.hero-visual svg { width: 100%; height: auto; color: var(--brand); }
.hero-visual .caption { display: flex; justify-content: space-between; font: 400 12px/1.5 var(--font-mono); color: var(--ink-muted); margin-top: 8px; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } .hero { padding: 48px 0; } .hero-visual { min-height: 240px; } }

/* Verify strip */
.verify-strip { display: flex; align-items: center; gap: 24px; padding: 24px; background: var(--surface); border: 1.5px solid var(--ink); border-radius: var(--radius); }
.verify-strip .intro { min-width: 260px; }
.verify-strip form { display: flex; gap: 12px; flex-grow: 1; align-items: flex-end; }
.verify-strip form .field { flex-grow: 1; }
@media (max-width: 900px) { .verify-strip, .verify-strip form { flex-direction: column; align-items: stretch; } .verify-strip .intro { min-width: 0; } }

/* Steps */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; counter-reset: step; }
.steps li { border-top: 2px solid var(--ink); padding-top: 16px; display: flex; flex-direction: column; gap: 6px; counter-increment: step; }
.steps li::before { content: "0" counter(step); font: 500 14px var(--font-mono); }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr; } }

/* Split sections */
.split { display: grid; grid-template-columns: minmax(0, 360px) minmax(0, 1fr); gap: 56px; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; gap: 24px; } }
.proof dt { font-weight: 600; font-size: 17px; }
.proof dd { margin: 4px 0 0; }

/* Tables */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid var(--border); border-radius: var(--radius); }
.table { width: 100%; border-collapse: collapse; background: var(--surface); font-size: 15px; line-height: 1.45; font-variant-numeric: tabular-nums; }
.table th { text-align: left; padding: 10px 14px; background: var(--surface-sunken); border-bottom: 1px solid var(--ink); font: 500 12px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-muted); white-space: nowrap; }
.table td { padding: 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
.table tr:last-child td { border-bottom: 0; }
.table .mono { font-size: 14px; }
.table .num { text-align: right; }
.table .name { font-weight: 600; }
.tag { display: inline-block; margin-top: 4px; font: 400 12px/16px var(--font-mono); color: var(--ink-muted); border: 1px solid var(--border); padding: 1px 6px; border-radius: var(--radius); }

/* Tests page */
.catalog { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 40px; align-items: start; }
.filters { display: flex; flex-direction: column; gap: 24px; }
.filters legend { margin-bottom: 6px; }
.catalog-head { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 16px; }
.catalog-head select { width: auto; }
.callout { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 20px 24px; border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--surface); margin-top: 24px; }
@media (max-width: 900px) { .catalog { grid-template-columns: minmax(0, 1fr); } .callout { flex-direction: column; align-items: flex-start; } }
.empty { padding: 32px 16px; text-align: center; color: var(--ink-muted); }

/* Breadcrumb */
.crumbs { font: 400 14px/1.5 var(--font-mono); color: var(--ink-muted); }
.crumbs a { color: var(--ink-muted); }

/* CTA band */
.cta-band { background: var(--band); color: var(--on-band); border-radius: var(--radius); padding: 32px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.cta-band p { color: var(--on-band-muted); }
@media (max-width: 900px) { .cta-band { flex-direction: column; align-items: flex-start; } }

/* Verify page */
.lookup { display: flex; gap: 12px; align-items: flex-end; max-width: 720px; }
.lookup .field { flex-grow: 1; }
@media (max-width: 600px) { .lookup { flex-direction: column; align-items: stretch; } }
.result { background: var(--surface); border: 1.5px solid var(--ink); border-radius: var(--radius); overflow: hidden; }
.result-head { display: flex; align-items: center; gap: 16px; padding: 20px 24px; border-bottom: 1px solid; }
.result-head svg { width: 30px; height: 30px; flex-shrink: 0; }
.result-head .title { font-size: 21px; font-weight: 600; line-height: 1.3; }
.result-head .id { margin-left: auto; text-align: right; font-family: var(--font-mono); }
.result-head .id strong { display: block; font-size: 22px; font-weight: 500; }
.result-head .id span { font-size: 13px; color: var(--ink-muted); }
.result--valid .result-head { background: var(--pass-bg); border-color: var(--pass); }
.result--valid .result-head svg, .result--valid .result-head .title { color: var(--pass); }
.result--revised .result-head { background: var(--watch-bg); border-color: var(--watch); }
.result--revised .result-head svg, .result--revised .result-head .title { color: var(--watch); }
.result--revoked .result-head { background: var(--fail-bg); border-color: var(--fail); }
.result--revoked .result-head svg, .result--revoked .result-head .title { color: var(--fail); }
.result--notfound .result-head { background: var(--surface-sunken); border-color: var(--border-strong); }
.result-body { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 32px; padding: 24px; }
.result-body .side { display: flex; flex-direction: column; gap: 16px; }
.panel { padding: 14px; background: var(--surface-sunken); border-radius: var(--radius); display: flex; flex-direction: column; gap: 6px; }
.panel .hash { font: 400 13px/1.5 var(--font-mono); overflow-wrap: anywhere; }
.client-label { padding: 10px 14px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 15px; }
.fields { margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px 24px; }
.fields dt { font: 500 12px/16px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-muted); }
.fields dd { margin: 2px 0 0; }
@media (max-width: 900px) {
  .result-body { grid-template-columns: minmax(0, 1fr); }
  .fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .result-head { flex-wrap: wrap; }
  .result-head .id { margin-left: 0; text-align: left; width: 100%; }
}
.outcomes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.outcome { padding: 20px; border: 1px solid; border-radius: var(--radius); display: flex; flex-direction: column; gap: 8px; }
.outcome .t { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 17px; }
.outcome svg { width: 18px; height: 18px; }
.outcome--revised { background: var(--watch-bg); border-color: var(--watch); }
.outcome--revised .t { color: var(--watch); }
.outcome--revoked { background: var(--fail-bg); border-color: var(--fail); }
.outcome--revoked .t { color: var(--fail); }
.outcome--notfound { background: var(--surface); border: 1.5px dashed var(--border-strong); }
@media (max-width: 900px) { .outcomes { grid-template-columns: 1fr; } }
.links-row { display: flex; gap: 20px; align-items: center; }
.links-row a.box { flex: 1; padding: 18px 20px; border: 1px solid var(--border-strong); border-radius: var(--radius); text-decoration: none; color: var(--ink); font-weight: 500; }
.links-row a.box:hover { background: var(--surface-sunken); }
@media (max-width: 900px) { .links-row { flex-direction: column; align-items: stretch; } }

/* Footer */
.site-footer { background: var(--band); color: var(--on-band); padding: 48px 0 32px; margin-top: 0; font-size: 15px; }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr repeat(4, minmax(0, 1fr)); gap: 24px; }
.site-footer h2 { font: 500 12px/24px var(--font-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--on-band-muted); }
.site-footer ul { list-style: none; margin: 8px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.site-footer a { color: var(--on-band); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; color: var(--on-band); }
.site-footer .tagline { color: var(--on-band-muted); margin-top: 8px; }
.site-footer .status { font: 400 13px/1.5 var(--font-mono); color: var(--on-band-muted); margin-top: 8px; }
.site-footer .legal { margin-top: 32px; padding-top: 20px; border-top: 1px solid #34413A; font-size: 13px; color: var(--on-band-muted); }
@media (max-width: 900px) { .site-footer .cols { grid-template-columns: 1fr 1fr; } .site-footer .cols > :first-child { grid-column: 1 / -1; } }

/* Stub pages */
.stub { padding: 80px 0; }
.stub .box { max-width: 680px; display: flex; flex-direction: column; gap: 20px; }

/* Form status */
.form-status { padding: 14px 16px; border-radius: var(--radius); border: 1px solid; }
.form-status--ok { background: var(--pass-bg); border-color: var(--pass); }
.form-status--err { background: var(--fail-bg); border-color: var(--fail); }
.quote-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 24px; align-content: start; }
.quote-form .full { grid-column: 1 / -1; }
@media (max-width: 600px) { .quote-form { grid-template-columns: 1fr; } }