/* ============================================================
   BikeSeek — Paddock / Race-plate design system
   ============================================================ */

:root {
  /* Palette */
  --paddock:   #F7F6F2;
  --ink:       #15171C;
  --plate:     #F5C518;
  --circuit:   #D6202B;
  --steel:     #9AA0A6;
  --asphalt:   #2B2F36;

  --paddock-2: #EFEDE6;   /* slightly deeper paddock for tints */
  --hairline:  #DCDAD2;   /* light rule on paddock */
  --steel-ink: #5A5F66;   /* darkened steel for AA body metadata */

  /* Type */
  --display: "Saira Condensed", "Arial Narrow", system-ui, sans-serif;
  --body:    "Inter", system-ui, -apple-system, sans-serif;
  --mono:    "JetBrains Mono", "SFMono-Regular", ui-monospace, monospace;

  --maxw: 1180px;
  --gut: clamp(18px, 4vw, 56px);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paddock);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }
img { max-width: 100%; display: block; }

/* visible keyboard focus */
:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 2px;
  border-radius: 2px;
}
a:focus-visible, button:focus-visible { outline-color: var(--circuit); }

.skip-link {
  position: absolute; left: 12px; top: -60px;
  background: var(--ink); color: #fff; padding: 10px 16px;
  font: 600 14px/1 var(--body); border-radius: 4px;
  z-index: 200; transition: top .15s ease;
}
.skip-link:focus { top: 12px; }

.shell { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gut); }

/* ============================================================
   Top bar
   ============================================================ */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--paddock) 88%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.topbar__in {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; height: 64px;
}

/* Wordmark */
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand__plate {
  display: grid; place-items: center;
  width: 34px; height: 34px;
  background: var(--plate);
  border: 2.5px solid var(--ink);
  border-radius: 5px;
  box-shadow: 1px 1px 0 var(--ink);
}
.brand__plate b {
  font: 800 17px/1 var(--display);
  letter-spacing: .02em;
}
.brand__word {
  font: 800 23px/1 var(--display);
  letter-spacing: .04em; text-transform: uppercase;
}
.brand__word .k { color: var(--circuit); }

/* Language toggle (segmented) */
.langtoggle {
  display: inline-flex; padding: 3px;
  background: var(--paddock-2);
  border: 1.5px solid var(--ink);
  border-radius: 6px;
}
.langtoggle button {
  appearance: none; border: 0; cursor: pointer;
  background: transparent; color: var(--steel-ink);
  font: 700 12px/1 var(--mono); letter-spacing: .06em;
  padding: 7px 12px; border-radius: 4px;
  text-transform: uppercase; transition: background .15s, color .15s;
}
.langtoggle button[aria-pressed="true"] {
  background: var(--ink); color: var(--paddock);
}

/* ============================================================
   Hero
   ============================================================ */
.hero { padding-top: clamp(40px, 7vw, 84px); padding-bottom: clamp(34px, 5vw, 64px); }
.hero__kicker {
  display: inline-flex; align-items: center; gap: 9px;
  font: 700 12px/1 var(--mono); letter-spacing: .14em;
  text-transform: uppercase; color: var(--steel-ink);
  margin-bottom: 22px;
}
.hero__kicker .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--circuit); }

.hero__title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(40px, 7.2vw, 86px);
  line-height: .98;
  letter-spacing: -0.005em;
  margin: 0 0 24px;
  max-width: 17ch;
  text-wrap: balance;
}
.hero__title em { font-style: normal; color: var(--circuit); }

.hero__note {
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.55;
  color: var(--asphalt);
  max-width: 60ch;
  margin: 0;
}

.hero__meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 22px;
  margin-top: 30px;
  font: 600 12.5px/1 var(--mono); letter-spacing: .04em;
  color: var(--steel-ink);
}
.hero__meta .pill {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 12px; border: 1px solid var(--hairline);
  border-radius: 999px; background: #fff;
}
.hero__meta .pill b { color: var(--ink); }

/* ---------- Hero search ---------- */
.bs-seek { margin-top: clamp(26px, 4vw, 34px); max-width: 640px; }
.bs-seek__bar {
  display: flex; align-items: center; gap: 10px;
  background: #fff;
  border: 2px solid var(--ink);
  border-radius: 8px;
  padding: 8px 8px 8px 16px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: box-shadow .14s ease, border-color .14s ease;
}
.bs-seek__bar:focus-within { border-color: var(--circuit); box-shadow: 3px 3px 0 var(--circuit); }
.bs-seek__ico { flex: 0 0 auto; width: 20px; height: 20px; color: var(--steel-ink); }
.bs-seek__input {
  flex: 1; min-width: 0; border: 0; background: transparent; outline: none;
  font: 500 16px/1.4 var(--body); color: var(--ink);
}
.bs-seek__input::placeholder { color: var(--steel); }
.bs-seek__input::-webkit-search-cancel-button { -webkit-appearance: none; appearance: none; }
.bs-seek__go {
  flex: 0 0 auto; cursor: pointer;
  border: 2px solid var(--ink); background: var(--ink); color: var(--paddock);
  font: 800 14px/1 var(--display); letter-spacing: .06em; text-transform: uppercase;
  padding: 12px 20px; border-radius: 6px;
  transition: background .14s, color .14s, border-color .14s, transform .12s;
}
.bs-seek__go:hover { background: var(--circuit); border-color: var(--circuit); transform: translateY(-1px); }

.bs-seek__engines { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.bs-eng {
  display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
  background: #fff; color: var(--steel-ink);
  border: 1.5px solid var(--ink); border-radius: 6px;
  font: 700 12px/1 var(--mono); letter-spacing: .04em;
  padding: 8px 13px;
  transition: background .14s, color .14s, transform .12s, box-shadow .14s;
}
.bs-eng svg { flex: 0 0 auto; width: 14px; height: 14px; }
.bs-eng:hover { background: var(--paddock-2); transform: translateY(-1px); }
.bs-eng[aria-pressed="true"] {
  background: var(--plate); color: var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
}
.bs-eng[aria-pressed="true"]:hover { background: var(--plate); transform: translateY(-1px); }

.bs-seek__help {
  margin: 13px 0 0;
  font: 600 11.5px/1.4 var(--mono); letter-spacing: .04em;
  text-transform: uppercase; color: var(--steel-ink);
}

/* ============================================================
   Plate index (quick-jump rail)
   ============================================================ */
.indexrail {
  position: sticky; top: 64px; z-index: 90;
  background: color-mix(in srgb, var(--paddock) 90%, transparent);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
}
.indexrail__in {
  display: flex; gap: 8px; overflow-x: auto; padding: 12px 0;
  scrollbar-width: none;
}
.indexrail__in::-webkit-scrollbar { display: none; }
.jumpplate {
  flex: 0 0 auto; text-decoration: none;
  display: inline-flex; align-items: center; gap: 9px;
  padding: 7px 13px 7px 8px;
  border: 1.5px solid var(--ink); border-radius: 6px;
  background: #fff; transition: background .15s, color .15s, transform .12s;
}
.jumpplate:hover { background: var(--ink); color: var(--paddock); transform: translateY(-1px); }
.jumpplate__num {
  font: 800 13px/1 var(--display); letter-spacing: .02em;
  background: var(--plate); color: var(--ink);
  padding: 4px 6px; border-radius: 3px; min-width: 24px; text-align: center;
}
.jumpplate__name {
  font: 600 12.5px/1 var(--body); white-space: nowrap; letter-spacing: .01em;
}

/* ============================================================
   Category section
   ============================================================ */
.cat { padding-top: clamp(48px, 7vw, 90px); scroll-margin-top: 132px; }
.cat__head {
  display: grid; grid-template-columns: auto 1fr; gap: 22px;
  align-items: start; margin-bottom: 30px;
}

/* Racing number plate badge */
.plate {
  position: relative;
  width: 92px; height: 92px;
  background: var(--plate);
  border: 3px solid var(--ink);
  border-radius: 10px;
  display: grid; place-items: center;
  box-shadow: 3px 3px 0 var(--ink);
}
.plate::before, .plate::after {
  content: ""; position: absolute; width: 5px; height: 5px;
  border-radius: 50%; background: var(--ink); opacity: .55;
}
.plate::before { top: 7px; left: 7px; box-shadow: 71px 0 0 var(--ink); }
.plate::after  { bottom: 7px; left: 7px; box-shadow: 71px 0 0 var(--ink); }
.plate b {
  font: 800 46px/1 var(--display);
  letter-spacing: -0.01em; color: var(--ink);
}

.cat__titles { padding-top: 4px; }
.cat__eyebrow {
  font: 700 11.5px/1 var(--mono); letter-spacing: .16em;
  text-transform: uppercase; color: var(--steel-ink);
  display: flex; align-items: center; gap: 10px; margin-bottom: 9px;
}
.cat__eyebrow .count { color: var(--ink); }
.cat__eyebrow .rule { flex: 1; height: 1px; background: var(--hairline); max-width: 120px; }
.cat__title {
  font: 800 clamp(26px, 3.4vw, 40px)/1 var(--display);
  letter-spacing: .005em; margin: 0 0 8px;
}
.cat__blurb {
  font-size: 16px; color: var(--asphalt); margin: 0; max-width: 64ch;
}

/* ============================================================
   Card grid
   ============================================================ */
.grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
}

.card {
  position: relative; display: flex; flex-direction: column;
  text-decoration: none; color: inherit;
  background: #fff;
  border: 1.5px solid var(--hairline);
  border-radius: 9px;
  padding: 18px 18px 16px;
  overflow: hidden;
  transition: transform .14s ease, border-color .14s ease, box-shadow .14s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--ink);
  box-shadow: 4px 6px 0 rgba(21,23,28,.10);
}
.card.is-essential { border-left: 4px solid var(--circuit); }

/* enthusiast corner flag */
.card.is-enthusiast::after {
  content: ""; position: absolute; top: 0; right: 0;
  width: 0; height: 0;
  border-top: 26px solid var(--plate);
  border-left: 26px solid transparent;
}

.card__top { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.card__name {
  font: 700 19px/1.12 var(--display);
  letter-spacing: .01em;
}
.card__arrow {
  flex: 0 0 auto; color: var(--steel);
  transition: transform .14s ease, color .14s ease;
  font: 400 16px/1 var(--mono);
}
.card:hover .card__arrow { color: var(--circuit); transform: translate(2px, -2px); }

.card__desc {
  font-size: 13.5px; line-height: 1.5; color: var(--steel-ink);
  margin: 9px 0 16px; flex: 1;
}

.card__foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card__domain {
  font: 500 11.5px/1 var(--mono); color: var(--steel-ink);
  letter-spacing: .01em; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

.tags { display: flex; flex-wrap: wrap; gap: 5px; justify-content: flex-end; }
.tag {
  font: 600 10px/1 var(--mono); letter-spacing: .04em;
  text-transform: uppercase;
  padding: 4px 7px; border-radius: 3px;
  border: 1px solid var(--hairline); color: var(--steel-ink);
  white-space: nowrap;
}
.tag.t-essential { color: var(--circuit); border-color: color-mix(in srgb, var(--circuit) 45%, var(--hairline)); }
.tag.t-official  { color: var(--ink); background: var(--paddock-2); border-color: var(--hairline); }
.tag.t-enthusiast { color: #8a6d00; border-color: color-mix(in srgb, var(--plate) 60%, var(--hairline)); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  margin-top: clamp(60px, 9vw, 120px);
  background: var(--ink); color: var(--paddock);
}
.footer__in { padding-top: 56px; padding-bottom: 48px; }
.footer__top {
  display: flex; flex-wrap: wrap; gap: 24px 40px;
  align-items: center; justify-content: space-between;
  padding-bottom: 32px; border-bottom: 1px solid rgba(247,246,242,.16);
}
.footer__brand { display: flex; align-items: center; gap: 12px; }
.footer__brand .brand__word { color: var(--paddock); }
.footer__switch {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none;
  border: 1.5px solid var(--plate); color: var(--plate);
  font: 700 13px/1 var(--mono); letter-spacing: .05em;
  padding: 11px 18px; border-radius: 6px;
  transition: background .15s, color .15s;
}
.footer__switch:hover { background: var(--plate); color: var(--ink); }

.footer__notes {
  display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  padding-top: 30px;
}
.footer__notes p {
  margin: 0; font-size: 12.5px; line-height: 1.6; color: var(--steel);
}
.footer__notes .reviewed { font-family: var(--mono); color: var(--plate); letter-spacing: .03em; }

/* ============================================================
   Motion
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .flip-in { animation: flipIn .7s cubic-bezier(.2,.7,.2,1) both; transform-origin: top center; }
  @keyframes flipIn {
    from { opacity: 0; transform: perspective(700px) rotateX(-78deg); }
    to   { opacity: 1; transform: perspective(700px) rotateX(0); }
  }
  .reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1); }
  .reveal.is-in { opacity: 1; transform: none; }
}

/* Safety net: if the page never paints (backgrounded/throttled iframe),
   show everything statically so content is never stuck invisible. */
.reveal-static .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
.reveal-static .flip-in { animation: none !important; opacity: 1 !important; transform: none !important; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 560px) {
  .cat__head { grid-template-columns: auto 1fr; gap: 16px; }
  .plate { width: 66px; height: 66px; border-width: 2.5px; box-shadow: 2px 2px 0 var(--ink); }
  .plate b { font-size: 32px; }
  .plate::before { box-shadow: 47px 0 0 var(--ink); }
  .plate::after  { box-shadow: 47px 0 0 var(--ink); }
  .grid { grid-template-columns: 1fr; }
  .brand__word { font-size: 20px; }
  .topbar__in { height: 58px; }
  .indexrail { top: 58px; }
}