/* =========================================================================
   Oldtimers NH — klassieke auto's
   Design: de spanning tussen de grote Amerikaanse Thunderbird (chroom, vinnen,
   poederblauw, brede horizontalen) en de kleine Nederlandse Kever (crème, rond,
   ingetogen, leer). Foto's zijn de held. Eén signatuur: de chroom two-tone lijn.
   Geen externe fonts of scripts. Palet afgeleid van de auto's zelf.
   ========================================================================= */

:root {
  /* Thunderbird */
  --tbird-blue: #3e6076;
  --tbird-blue-light: #6e97ac;
  --tbird-blue-pale: #d7e4ea;
  /* Kever */
  --kever-cream: #e7d9bc;
  --kever-cream-pale: #f3ecdd;
  --kever-leather: #9b5b43;
  /* Neutraal / chroom */
  --ink: #1b2126;
  --ink-soft: #48535b;
  --chrome: #8a939b;
  --chrome-line: #c7cdd1;
  --paper: #f7f6f3;
  --paper-raised: #ffffff;

  --bg: var(--paper);
  --bg-raised: var(--paper-raised);
  --text: var(--ink);
  --text-soft: var(--ink-soft);
  --accent: var(--tbird-blue);
  --accent-warm: var(--kever-leather);
  --line: var(--chrome-line);

  --maxw: 1180px;
  --gap: clamp(1rem, 3vw, 2rem);
  --radius: 4px;

  --ff-display: "Helvetica Neue", "Arial Narrow", "Arial", system-ui, sans-serif;
  --ff-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --shadow: 0 1px 2px rgba(27, 33, 38, .06), 0 8px 24px rgba(27, 33, 38, .08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161a1e;
    --bg-raised: #1e242a;
    --text: #eef1f3;
    --text-soft: #aeb7be;
    --accent: var(--tbird-blue-light);
    --accent-warm: #c98266;
    --line: #333c43;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 30px rgba(0, 0, 0, .45);
  }
}

/* ------------------------------------------------------------------ base */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

body {
  margin: 0;
  font-family: var(--ff-body);
  font-size: clamp(1rem, .95rem + .25vw, 1.125rem);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--ff-display);
  line-height: 1.05;
  letter-spacing: .01em;
  margin: 0 0 .5em;
  font-weight: 800;
}
h1 { font-size: clamp(2.1rem, 1.4rem + 3.4vw, 4rem); text-transform: uppercase; letter-spacing: .02em; }
h2 { font-size: clamp(1.5rem, 1.1rem + 1.8vw, 2.4rem); }
h3 { font-size: clamp(1.15rem, 1rem + .6vw, 1.4rem); }

p { margin: 0 0 1rem; max-width: 62ch; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; height: auto; display: block; }

:focus-visible {
  outline: 3px solid var(--tbird-blue-light);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute; left: 8px; top: -60px;
  background: var(--ink); color: #fff; padding: .6rem 1rem; border-radius: var(--radius);
  z-index: 100; transition: top .15s;
}
.skip-link:focus { top: 8px; }

/* ------------------------------------------------------------- signature */
/* chroom two-tone lijn — het handtekening-element */
.chrome-rule {
  height: 4px; border: 0; margin: 0;
  background: linear-gradient(to bottom, var(--chrome-line) 0 1px, var(--chrome) 1px 3px, var(--chrome-line) 3px 4px);
}

/* --------------------------------------------------------------- layout */
.wrap { width: min(100% - 2rem, var(--maxw)); margin-inline: auto; }
.section { padding-block: clamp(2.5rem, 6vw, 5rem); }
.section--warm { background: var(--kever-cream-pale); }
.section--cool { background: var(--tbird-blue-pale); }
@media (prefers-color-scheme: dark) {
  .section--warm { background: #241f1a; }
  .section--cool { background: #17242c; }
}
.eyebrow {
  font-family: var(--ff-display);
  text-transform: uppercase; letter-spacing: .18em;
  font-size: .8rem; font-weight: 700; color: var(--accent);
  margin: 0 0 .75rem;
}
.section--warm .eyebrow { color: var(--accent-warm); }
.lead { font-size: 1.15em; color: var(--text-soft); max-width: 60ch; }

/* --------------------------------------------------------------- header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding-block: .7rem;
}
.brand {
  font-family: var(--ff-display); font-weight: 800; text-transform: uppercase;
  letter-spacing: .06em; font-size: 1.05rem; color: var(--text); text-decoration: none;
  display: inline-flex; align-items: center; gap: .55rem;
}
.brand .badge {
  width: 26px; height: 26px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--tbird-blue-light), var(--tbird-blue));
  box-shadow: inset 0 0 0 2px var(--chrome-line);
  flex: none;
}
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line);
  border-radius: var(--radius); padding: .45rem .55rem; cursor: pointer; color: var(--text);
}
.nav-toggle svg { display: block; }
.nav-list {
  list-style: none; display: flex; gap: .3rem; margin: 0; padding: 0;
}
.nav-list a {
  display: block; padding: .5rem .7rem; border-radius: var(--radius);
  color: var(--text-soft); text-decoration: none; font-weight: 600; font-size: .98rem;
}
.nav-list a:hover { color: var(--text); background: color-mix(in srgb, var(--accent) 12%, transparent); }
.nav-list a[aria-current="page"] { color: var(--accent); }
.nav-list a[aria-current="page"]::after {
  content: ""; display: block; height: 2px; background: var(--accent); margin-top: 3px; border-radius: 2px;
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; }
  .nav-list {
    position: absolute; inset: 100% 0 auto 0;
    flex-direction: column; gap: 0; padding: .5rem 1rem 1rem;
    background: var(--bg-raised); border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    display: none;
  }
  .nav-list.open { display: flex; }
  .nav-list a { padding: .8rem .5rem; border-bottom: 1px solid var(--line); }
  .nav-list a[aria-current="page"]::after { display: none; }
}

/* ----------------------------------------------------------------- hero */
.hero { position: relative; }
.hero-media { position: relative; width: 100%; aspect-ratio: 16 / 9; max-height: 82vh; overflow: hidden; background: var(--ink); }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(20,26,30,.72) 0%, rgba(20,26,30,.28) 45%, rgba(20,26,30,0) 75%);
}
.hero-caption {
  position: absolute; z-index: 2; left: 0; right: 0; bottom: 0;
  padding: clamp(1.5rem, 5vw, 4rem);
}
.hero-caption .wrap { color: #fff; }
.hero-caption h1 { color: #fff; text-shadow: 0 2px 20px rgba(0,0,0,.35); max-width: 16ch; }
.hero-caption p { color: rgba(255,255,255,.92); max-width: 46ch; font-size: 1.15rem; }
.hero-page .hero-media { width: 100%; aspect-ratio: 21 / 9; max-height: 64vh; }

/* --------------------------------------------------------------- buttons */
.btn {
  --btn-bg: var(--accent); --btn-fg: #fff;
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .75rem 1.3rem; border-radius: var(--radius);
  background: var(--btn-bg); color: var(--btn-fg);
  font-weight: 700; text-decoration: none; border: 1px solid transparent;
  transition: transform .12s ease, box-shadow .12s ease, background .12s;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--text); border-color: var(--line); }
.btn--warm { --btn-bg: var(--accent-warm); }
.btn--lg { padding: .9rem 1.6rem; font-size: 1.05rem; }

/* --------------------------------------------------------------- cards */
.cards { display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card {
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  box-shadow: var(--shadow); text-decoration: none; color: var(--text);
  transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 6px 14px rgba(27,33,38,.12), 0 20px 40px rgba(27,33,38,.14); }
.card-media { aspect-ratio: 3 / 2; overflow: hidden; border-bottom: 3px solid var(--accent); }
.card--kever .card-media { border-bottom-color: var(--accent-warm); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.card:hover .card-media img { transform: scale(1.03); }
.card-body { padding: 1.25rem 1.35rem 1.5rem; }
.card-body h3 { margin-bottom: .25rem; }
.card-kicker { font-size: .85rem; letter-spacing: .04em; color: var(--text-soft); text-transform: uppercase; }
.card-more { margin-top: .8rem; font-weight: 700; color: var(--accent); }
.card--kever .card-more { color: var(--accent-warm); }

/* --------------------------------------------------------------- feature */
.feature { display: grid; gap: clamp(1.5rem, 5vw, 3.5rem); align-items: center; grid-template-columns: 1fr; }
@media (min-width: 820px) {
  .feature { grid-template-columns: 1.05fr .95fr; }
  .feature--reverse .feature-media { order: 2; }
}
.feature-media { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.feature-media img { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }

/* --------------------------------------------------------------- specs */
.specs { list-style: none; margin: 1.25rem 0 0; padding: 0; display: grid; gap: .1rem; }
.specs li {
  display: flex; align-items: baseline; gap: .75rem; padding: .7rem 0;
  border-bottom: 1px solid var(--line);
}
.specs li::before {
  content: ""; flex: none; width: 9px; height: 9px; border-radius: 50%;
  background: var(--accent); transform: translateY(1px);
}
.specs--warm li::before { background: var(--accent-warm); }

/* ----------------------------------------------------------- text blocks */
.prose h2 { margin-top: 2rem; }
.stack > * + * { margin-top: 1.5rem; }
.two-col { display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.panel {
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem; box-shadow: var(--shadow);
}
.panel--accent { border-top: 4px solid var(--accent); }
.panel--warm { border-top: 4px solid var(--accent-warm); }

/* --------------------------------------------------------------- gallery */
.gallery {
  columns: 3 260px; column-gap: var(--gap);
}
.gallery figure { margin: 0 0 var(--gap); break-inside: avoid; }
.gallery button.tile {
  display: block; width: 100%; padding: 0; border: 0; cursor: zoom-in;
  background: none; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.gallery img { width: 100%; height: auto; transition: transform .4s ease; }
.gallery button.tile:hover img { transform: scale(1.04); }

/* --------------------------------------------------------------- lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 200; display: none;
  background: rgba(12, 15, 18, .93);
  padding: clamp(.5rem, 3vw, 2.5rem);
  align-items: center; justify-content: center;
}
.lightbox[open], .lightbox.open { display: flex; }
.lightbox figure { margin: 0; max-width: min(1100px, 100%); max-height: 100%; text-align: center; }
.lightbox img { max-width: 100%; max-height: 82vh; width: auto; margin-inline: auto; border-radius: var(--radius); }
.lightbox figcaption { color: #dfe4e8; margin-top: .8rem; font-size: .95rem; }
.lb-btn {
  position: absolute; background: rgba(255,255,255,.1); color: #fff; border: 1px solid rgba(255,255,255,.25);
  width: 3rem; height: 3rem; border-radius: 50%; cursor: pointer; font-size: 1.4rem; line-height: 1;
  display: flex; align-items: center; justify-content: center;
}
.lb-btn:hover { background: rgba(255,255,255,.2); }
.lb-close { top: 1rem; right: 1rem; }
.lb-prev { left: 1rem; top: 50%; transform: translateY(-50%); }
.lb-next { right: 1rem; top: 50%; transform: translateY(-50%); }
@media (max-width: 560px) {
  .lb-prev { left: .4rem; } .lb-next { right: .4rem; }
  .lb-btn { width: 2.6rem; height: 2.6rem; }
}

/* --------------------------------------------------------------- contact */
.contact-grid { display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.contact-card {
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.5rem; box-shadow: var(--shadow);
}
.contact-card .label { text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; color: var(--text-soft); }
.contact-card .value { font-family: var(--ff-display); font-size: 1.5rem; font-weight: 800; margin-top: .3rem; }
.contact-card a { text-decoration: none; }

/* --------------------------------------------------------------- footer */
.site-footer {
  border-top: 1px solid var(--line); background: var(--bg-raised);
  padding-block: 2.5rem; margin-top: 0; color: var(--text-soft);
}
.footer-inner { display: flex; flex-wrap: wrap; gap: 1rem 2rem; align-items: center; justify-content: space-between; }
.footer-inner a { color: var(--text-soft); }
.footer-inner a:hover { color: var(--accent); }
.footer-brand { font-family: var(--ff-display); font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: var(--text); }

/* --------------------------------------------------------------- utility */
.center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.5rem; }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* soft scroll reveal — alleen verbergen als JavaScript actief is (html.js),
   zodat bezoekers zonder JS de inhoud gewoon zien. */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .js .reveal { opacity: 1; transform: none; } }