/*
 * Atkinson Hyperlegible (Braille Institute) is built to tell 0/O, 1/l/I and
 * similar shapes apart, which matters on a page of CVE IDs, versions and
 * package names. Self-hosted: the CSP allows no third-party fonts, and a font
 * CDN would see every visitor's IP.
 */
@font-face {
  font-family: 'Atkinson Next';
  src: url('/fonts/atkinson-next.woff2') format('woff2');
  font-weight: 200 800;
  font-display: swap;
}
@font-face {
  font-family: 'Atkinson Mono';
  src: url('/fonts/atkinson-mono.woff2') format('woff2');
  font-weight: 200 800;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  /* Paper and ink lean towards the brand purple rather than a neutral grey. */
  --bg: #f5f3f8;
  --fg: #1b1724;
  --muted: #5e5869;
  --card: #ffffff;
  --border: #ddd8e5;
  --rule: #c9c2d4;
  --accent: #5e2ca5;
  --accent-fg: #ffffff;
  --exploited: #b3261e;
  --likely: #b45309;
  --critical: #ca8a04;
  --critical-ink: #854d0e;
  --critical-on: #1b1724;
  --backlog: #545a66;
  --ok: #2e7d32;
  --on-light: #ffffff;
  --focus: #5e2ca5;
  --radius: 4px;
  --sans: 'Atkinson Next', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'Atkinson Mono', ui-monospace, 'Cascadia Code', Menlo, monospace;
  font-family: var(--sans);
  line-height: 1.55;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131118;
    --fg: #eeeaf4;
    --muted: #a79fb4;
    --card: #1c1922;
    --border: #36303f;
    --rule: #4a4256;
    --accent: #b897ee;
    --accent-fg: #131118;
    --exploited: #ff8a80;
    --likely: #ffb74d;
    --critical: #fde047;
    --critical-ink: #fde047;
    --critical-on: #131118;
    --backlog: #b0b6c3;
    --ok: #81c784;
    --on-light: #131118;
    --focus: #b897ee;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); }
a { color: var(--accent); text-underline-offset: 0.15em; }
code { font-family: var(--mono); font-size: 0.9em; overflow-wrap: anywhere; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
/* main takes focus after each route change so screen readers land there; it needs no ring. */
main:focus, main:focus-visible { outline: none; }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 1rem; top: 1rem; background: var(--card); padding: 0.5rem; z-index: 10; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

header.site, main, footer.site, .status { max-width: 48rem; margin: 0 auto; padding: 0 1rem; }
header.site { padding-top: 1.75rem; display: flex; flex-wrap: wrap; align-items: center; gap: 0.25rem 1rem; }
.brand { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--fg); text-decoration: none; font-size: 1.5rem; font-weight: 800; letter-spacing: -0.02em; }
.logo { width: 2.1rem; height: 2.1rem; color: var(--accent); align-self: center; }
.tagline { color: var(--muted); margin: 0; }
main { display: grid; gap: 2.25rem; margin-top: 2.5rem; }
footer.site { margin: 4rem auto 2rem; border-top: 1px solid var(--rule); padding-top: 1rem; }

/* Sections sit on the page, divided by a rule; only individual results get a container. */
.block { border-top: 1px solid var(--rule); padding-top: 1.1rem; }
h2 { font-size: 1.3rem; line-height: 1.25; letter-spacing: -0.01em; margin: 0 0 0.4rem; }
h3 { font-size: 1rem; margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 0.75rem; }
.row.wrap { flex-wrap: wrap; justify-content: flex-start; }
.label { display: block; font-weight: 700; margin-bottom: 0.4rem; }

textarea, input[type='text'], select {
  width: 100%;
  font: inherit;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
}
textarea:focus-visible, input[type='text']:focus-visible, select:focus-visible { outline: 2px solid var(--focus); outline-offset: 0; border-color: var(--focus); }
textarea { resize: vertical; min-height: 9rem; }
select { width: auto; }
.counter { font-size: 0.8rem; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.counter.over { color: var(--exploited); font-weight: 700; }

button {
  font: inherit;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  min-height: 2.5rem;
}
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); font-weight: 700; padding: 0.6rem 1.2rem; }
button.primary:hover { background: color-mix(in srgb, var(--accent) 85%, var(--fg)); }
button.icon { min-height: auto; padding: 0 0.4rem; border: none; background: none; font-size: 1.2rem; line-height: 1; }
.chip-button { border-radius: 999px; padding: 0.2rem 0.75rem; min-height: 2.25rem; background: transparent; }
.link { color: var(--accent); text-decoration: underline; cursor: pointer; }
button.link { border: none; background: none; padding: 0; min-height: auto; font-size: inherit; text-align: left; }

/* Input: the question is the page's headline. */
.compose { display: grid; gap: 0.6rem; }
.compose-label { font-size: clamp(1.9rem, 5vw, 2.6rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; margin-bottom: 0.4rem; }
.compose .row p { margin: 0; }
.compose button.primary { justify-self: start; }
.turnstile { min-height: 65px; }
.turnstile:empty { min-height: 0; }
.examples { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; }
.drop { border: 1px dashed var(--rule); border-radius: var(--radius); padding: 0.9rem 1.1rem; }
.drop p { margin: 0.2rem 0; }
.drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 8%, transparent); }

.chips { list-style: none; padding: 0; margin: 0.75rem 0; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.chip { display: inline-flex; align-items: center; gap: 0.4rem; border: 1px solid var(--border); border-radius: 999px; padding: 0.2rem 0.4rem 0.2rem 0.75rem; background: var(--card); max-width: 100%; }
.chip.ambiguous { border-color: var(--likely); }
.chip.unrecognised { opacity: 0.75; }
.chips.compact .chip { padding: 0.1rem 0.65rem; }
/* Internet-facing: a toggle on the Edit page, a quiet label elsewhere. */
button.expose { min-height: 1.75rem; padding: 0 0.55rem; border-radius: 999px; font-size: 0.8rem; color: var(--muted); background: transparent; border-style: dashed; }
button.expose[aria-pressed='true'] { color: var(--accent-fg); background: var(--accent); border: 1px solid var(--accent); font-weight: 700; }
.exposed-mark { color: var(--accent); font-weight: 700; }
.badge.exposed { color: var(--accent); }
.add { margin-top: 0.5rem; }
.add input { flex: 1; }
.copy { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.notice { border-left: 3px solid var(--likely); padding-left: 0.75rem; }

/* Traffic lights. Colour carries risk and nothing else; green is kept for good news. */
.red { --light: var(--exploited); }
.amber { --light: var(--likely); }
.red, .amber, .yellow, .grey { --ink: var(--light); }
/* Yellow is too light for white text or small text on white: darker ink, dark text on fills. */
.yellow { --light: var(--critical); --ink: var(--critical-ink); --on-light: var(--critical-on); }
.grey { --light: var(--backlog); }
.light { display: inline-block; width: 0.75rem; height: 0.75rem; border-radius: 2px; background: var(--light); flex: none; }
.pill { display: inline-block; font-size: 0.8rem; font-weight: 700; border-radius: 3px; padding: 0.05rem 0.45rem; background: var(--light); color: var(--on-light); white-space: nowrap; }

/* The match: a big headline, a strip in proportion to each priority, then a ledger of the four. */
.headline h2 { font-size: clamp(2.1rem, 6vw, 3.4rem); font-weight: 800; letter-spacing: -0.035em; line-height: 1.02; margin: 0 0 0.6rem; }
.headline p { margin: 0; font-size: 1.1rem; }
.risk { display: grid; gap: 1rem; margin-top: -1rem; }
.risk-strip { display: flex; gap: 3px; height: 0.9rem; }
.risk-strip span { flex-basis: 0; min-width: 0.6rem; background: var(--light); border-radius: 2px; transform-origin: left; animation: grow 0.6s cubic-bezier(0.2, 0.7, 0.2, 1) both; }
.risk-strip span:nth-child(2) { animation-delay: 0.08s; }
.risk-strip span:nth-child(3) { animation-delay: 0.16s; }
.risk-strip span:nth-child(4) { animation-delay: 0.24s; }
@keyframes grow { from { transform: scaleX(0); } }
.risk-summary { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(4, 1fr); }
.risk-tile { display: grid; align-content: start; gap: 0.3rem; padding: 0 1rem; border-left: 1px solid var(--rule); }
.risk-tile:first-child { padding-left: 0; border-left: none; }
.risk-tile.empty { opacity: 0.5; }
.risk-head { display: flex; align-items: baseline; gap: 0.45rem; }
.risk-count { font-size: 2.2rem; font-weight: 800; line-height: 1; letter-spacing: -0.03em; color: var(--ink); font-variant-numeric: tabular-nums; }
.risk-label { font-weight: 700; }
.risk-note { color: var(--muted); line-height: 1.4; }
.tile-vulns { list-style: none; margin: 0.2rem 0 0; padding: 0; display: grid; gap: 0.1rem; }
.tile-vulns a { font-family: var(--mono); font-size: 0.85rem; overflow-wrap: anywhere; }
@media (max-width: 48rem) {
  .risk-summary { grid-template-columns: repeat(2, 1fr); row-gap: 1.25rem; }
  .risk-tile:nth-child(3) { padding-left: 0; border-left: none; }
}

.grouping { border: none; padding: 0; margin: 0; display: flex; align-items: center; gap: 0.4rem; flex-wrap: wrap; }
.grouping legend { float: left; margin-right: 0.35rem; padding: 0; }
.segment { position: relative; }
.segment input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.segment span { display: inline-block; border: 1px solid var(--rule); border-radius: 999px; padding: 0.25rem 0.85rem; }
.segment input:checked + span { background: var(--fg); color: var(--bg); border-color: var(--fg); font-weight: 700; }
.segment input:focus-visible + span { outline: 2px solid var(--focus); outline-offset: 2px; }
.results-view { display: grid; gap: 2rem; margin-top: -1rem; }

.tier h2 { display: flex; align-items: center; gap: 0.5rem; }
.tier .count { font-size: 0.85rem; font-weight: 700; color: var(--ink); font-variant-numeric: tabular-nums; }
.tier > p { margin-top: 0; }
.results { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; }
.result { background: var(--card); border: 1px solid var(--border); border-left: 4px solid var(--light); border-radius: var(--radius); padding: 0.75rem 1rem; }
.result h3 a, .brief strong a, .change h3 a { font-family: var(--mono); }

.component { border-top: 1px solid var(--rule); border-left: 4px solid var(--light); padding: 0.3rem 0 0.3rem 0.85rem; }
.component summary { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; cursor: pointer; padding: 0.35rem 0; font-weight: 700; }
.component .tally { margin-left: auto; display: flex; gap: 0.3rem; flex-wrap: wrap; }
.component[open] > .results { margin: 0.4rem 0 0.75rem; }
.result p { margin: 0.3rem 0; }
.result .title { font-weight: 700; }
.evidence { font-size: 0.9rem; }
.badge { font-size: 0.78rem; border-radius: 3px; padding: 0.05rem 0.45rem; border: 1px solid currentColor; white-space: nowrap; }
.badge.severity { color: var(--fg); }
.badge.version_confirmed { color: var(--ok); }
.badge.product_match { color: var(--muted); }
.links { display: flex; gap: 1rem; flex-wrap: wrap; }
.changes ul { padding-left: 1.1rem; margin: 0; }
.changes li { margin: 0.3rem 0; }
.status { min-height: 1.5rem; color: var(--muted); }
.stale { color: var(--likely); }

@media (max-width: 36rem) {
  .row { flex-wrap: wrap; }
  .risk-summary { grid-template-columns: 1fr; }
  .risk-tile { padding-left: 0; border-left: none; }
  .component .tally { margin-left: 0; }
  .brand { font-size: 1.3rem; }
}

.chip.close { border-style: dashed; }
.badge.match-exact { color: var(--fg); }
.badge.match-close { color: var(--likely); border-style: dashed; }
.result .row { gap: 0.4rem 0.6rem; }
.change-list { list-style: none; padding: 0; margin: 0.5rem 0 0; display: grid; gap: 0.6rem; }
.change { border: 1px solid var(--border); border-left: 4px solid var(--light); border-radius: var(--radius); padding: 0.6rem 0.9rem; background: var(--card); }
.change h3 { margin: 0.3rem 0; }
.change h3 .title { font-weight: 500; }
.change p { margin: 0.3rem 0; }
.events { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 0.4rem; font-size: 0.8rem; }
.event { border-radius: 3px; padding: 0.05rem 0.45rem; border: 1px solid var(--border); }
.event.kev_added { border-color: var(--exploited); color: var(--exploited); }
.event.epss_crossed { border-color: var(--likely); color: var(--likely); }
.event.fix_released { border-color: var(--ok); color: var(--ok); }
.more summary { cursor: pointer; margin-top: 0.75rem; color: var(--accent); }

/* Fix first: stack items in the order to work on them. A real sequence, so it is numbered. */
.fix-list { list-style: none; padding: 0; margin: 0.6rem 0 0; display: grid; }
.fix-item { border-bottom: 1px solid var(--border); }
.fix-item:first-child { border-top: 1px solid var(--border); }
.fix-item summary { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem 0.6rem; padding: 0.6rem 0.25rem; cursor: pointer; list-style: none; }
.fix-item summary:hover { background: color-mix(in srgb, var(--light) 6%, transparent); }
.fix-item summary::-webkit-details-marker { display: none; }
.fix-item summary code { font-size: 0.95em; font-weight: 700; }
.fix-item .tally { margin-left: auto; display: flex; gap: 0.3rem; flex-wrap: wrap; }
.expand { color: var(--accent); font-weight: 700; white-space: nowrap; }
.expand::after { content: ""; display: inline-block; width: 0.4em; height: 0.4em; margin-left: 0.4em; border: solid currentColor; border-width: 0 2px 2px 0; transform: translateY(-0.15em) rotate(45deg); transition: transform 0.15s; }
details[open] > summary .expand::after { transform: translateY(0.05em) rotate(-135deg); }
.expand .when-open, details[open] > summary .expand .when-closed { display: none; }
details[open] > summary .expand .when-open { display: inline; }
.briefs { list-style: none; margin: 0; padding: 0 0.25rem 0.7rem 2.6rem; display: grid; gap: 0.45rem; }
.brief { border-top: 1px dashed var(--border); padding-top: 0.45rem; }
.brief p { margin: 0.15rem 0; }
.brief .row { gap: 0.3rem 0.5rem; align-items: baseline; }
.brief .links { gap: 0.3rem 1rem; }
.rank { display: inline-grid; place-items: center; min-width: 1.6rem; height: 1.6rem; border-radius: 3px; background: var(--light); color: var(--on-light); font-weight: 800; font-size: 0.85rem; flex: none; font-variant-numeric: tabular-nums; }
.score { font-size: 0.8rem; font-weight: 700; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.why { margin: 0.3rem 0; }
.why strong { color: var(--ink); }
.facts { gap: 0.35rem 0.5rem; margin: 0.4rem 0; }
.badge.muted { color: var(--muted); border-style: dashed; }
@media (max-width: 36rem) {
  .fix-item .tally { margin-left: 0; }
  .briefs { padding-left: 0.25rem; }
}

/* Loading: the logo scans. Fades in late so a fast response never flashes it. */
main[aria-busy='true'] > :not(.loader) { display: none; }
/* The status line still announces the wait to screen readers; the loader already says it on screen. */
main[aria-busy='true'] + .status { position: absolute; width: 1px; height: 1px; min-height: 0; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.loader { display: flex; align-items: center; gap: 1.5rem; padding: 2.5rem 0; animation: appear 0.25s 0.15s both; }
.loader svg { width: 5rem; height: 5rem; flex: none; color: var(--accent); overflow: visible; }
.loader h2 { font-size: clamp(1.7rem, 5vw, 2.4rem); font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; margin: 0; }
.loader p { margin: 0.3rem 0 0; }
/* Circles the lens about its own centre without turning it, like a hand sweeping a magnifier. */
.loader .lens { transform-box: view-box; transform-origin: 20px 20px; animation: sweep 1.8s linear infinite; }
.loader .heart { transform-box: fill-box; transform-origin: center; animation: beat 1.2s ease-in-out infinite; }
@keyframes appear { from { opacity: 0; } }
@keyframes sweep {
  from { transform: rotate(0deg) translateX(3px) rotate(0deg); }
  to { transform: rotate(360deg) translateX(3px) rotate(-360deg); }
}
@keyframes beat {
  0%, 45%, 100% { transform: scale(1); }
  12% { transform: scale(1.22); }
  26% { transform: scale(1.06); }
  34% { transform: scale(1.16); }
}

@media (prefers-reduced-motion: reduce) {
  .expand::after { transition: none; }
  .risk-strip span { animation: none; }
  .loader, .loader .lens, .loader .heart { animation: none; }
}