/* ============================================================
   Harderwijk Toerisme — Design System v1.0
   Thesis: historische Hanzestad aan het Wolderwijd,
   Dolfinarium als trekker, Veluwe als achtertuin.
   Static HTML/CSS, zero JS. Mobile-first. WCAG AA.
   ============================================================ */

/* ---------- 1. Design tokens ---------- */
:root {
  /* Palette (light) — contrast pairs verified AA (see README) */
  --c-harbor-900: #0b2d45;   /* diepe havenblauw — donkerst */
  --c-harbor-700: #144a6e;   /* primary */
  --c-harbor-500: #2a6f97;   /* secondary blue */
  --c-harbor-100: #dceaf3;   /* blue tint (chips, hover bg) */
  --c-sand-500:   #c8a97a;   /* warm zand */
  --c-sand-200:   #efe3cd;   /* licht zand (sectie-bg) */
  --c-sand-100:   #f7f0e2;   /* zandwolk */
  --c-offwhite:   #faf8f4;   /* pagina-achtergrond */
  --c-ink:        #1c2733;   /* tekst op licht (AA 13.9:1 op offwhite) */
  --c-ink-muted:  #4c5b6a;   /* secundaire tekst (AA 6.4:1) */
  --c-amber-600:  #b45309;   /* accent amber — links/buttons op licht (AA 5.1:1 op wit) */
  --c-amber-400:  #f2a71b;   /* accent amber — markeringen, icons */
  --c-white:      #ffffff;

  /* Dark mode overrides */
  --c-bg:         var(--c-offwhite);
  --c-surface:    var(--c-white);
  --c-text:       var(--c-ink);
  --c-text-muted: var(--c-ink-muted);
  --c-primary:    var(--c-harbor-700);
  --c-accent:     var(--c-amber-600);
  --c-accent-vivid: var(--c-amber-400);
  --c-line:       #e3ddd2;   /* randen/sectiescheiders */
  --c-hero-scrim: rgba(11, 45, 69, 0.55);

  /* Fluid type scale (clamp: mobiel → desktop) */
  --fs-xs:   clamp(0.80rem, 0.78rem + 0.1vw, 0.88rem);
  --fs-sm:   clamp(0.90rem, 0.87rem + 0.15vw, 1.00rem);
  --fs-base: clamp(1.00rem, 0.96rem + 0.2vw, 1.125rem);
  --fs-md:   clamp(1.15rem, 1.08rem + 0.3vw, 1.35rem);
  --fs-lg:   clamp(1.40rem, 1.25rem + 0.6vw, 1.80rem);
  --fs-xl:   clamp(1.75rem, 1.5rem + 1.1vw, 2.40rem);
  --fs-2xl:  clamp(2.10rem, 1.7rem + 1.8vw, 3.20rem);
  --fs-hero: clamp(2.40rem, 1.8rem + 2.8vw, 4.00rem);
  --lh-tight: 1.15;
  --lh-body:  1.6;

  /* Spacing scale (4px basis) */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4.5rem;
  --sp-section: clamp(3rem, 2rem + 5vw, 6rem);

  /* Grid / layout */
  --maxw: 72rem;
  --gutter: clamp(1rem, 0.5rem + 2vw, 2rem);
  --radius-sm: 0.375rem;
  --radius: 0.75rem;
  --radius-lg: 1.25rem;
  --shadow-sm: 0 1px 3px rgba(11, 45, 69, 0.10);
  --shadow-md: 0 4px 14px rgba(11, 45, 69, 0.14);
  --shadow-lg: 0 10px 30px rgba(11, 45, 69, 0.18);
  --header-h: 4rem;

  /* Motion */
  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
  --dur: 180ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --c-bg:         #0e1720;
    --c-surface:    #16222e;
    --c-text:       #e9eef3;   /* AA 13.4:1 op --c-bg */
    --c-text-muted: #aebccb;   /* AA 8.1:1 */
    --c-primary:    var(--c-harbor-100);
    --c-accent:     var(--c-amber-400); /* AA 9.9:1 op #0e1720 */
    --c-accent-vivid: var(--c-amber-400);
    --c-line:       #2a3947;
    --c-hero-scrim: rgba(6, 20, 32, 0.62);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.55);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.6);
  }
}

/* ---------- 2. Base / reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: var(--fs-base);
  line-height: var(--lh-body);
  color: var(--c-text);
  background: var(--c-bg);
}
img, svg, video { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { line-height: var(--lh-tight); margin: 0 0 var(--sp-3); color: var(--c-text); }
h1 { font-size: var(--fs-2xl); }
h2 { font-size: var(--fs-xl); }
h3 { font-size: var(--fs-lg); }
p  { margin: 0 0 var(--sp-4); }
a  { color: var(--c-accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible {
  outline: 3px solid var(--c-accent-vivid);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--c-harbor-900); color: var(--c-white);
  padding: var(--sp-2) var(--sp-4); border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; }

/* ---------- 3. Layout helpers ---------- */
.container {
  width: min(100% - (var(--gutter) * 2), var(--maxw));
  margin-inline: auto;
}
.section { padding-block: var(--sp-section); }
.section--sand { background: var(--c-sand-100); }
@media (prefers-color-scheme: dark) {
  .section--sand { background: #13202b; }
}
.section--harbor {
  background: var(--c-harbor-900);
  color: #f2f6f9; /* AA 13.1:1 op harbor-900 */
}
.section--harbor h2, .section--harbor h3 { color: #f2f6f9; }
.section--harbor a { color: var(--c-amber-400); }
.section-head { max-width: 44rem; margin-bottom: var(--sp-6); }
.section-head .eyebrow {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: var(--sp-2);
}
.section-head p { color: var(--c-text-muted); font-size: var(--fs-md); }
.section--harbor .section-head p { color: #c8d8e4; }

.grid { display: grid; gap: var(--sp-5); }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: 1fr; }
@media (min-width: 600px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ---------- 4. Header + pure-CSS hamburger ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--c-harbor-900);
  color: var(--c-white);
  box-shadow: var(--shadow-md);
}
.site-header__bar {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--header-h);
  gap: var(--sp-4);
}
.site-logo {
  display: flex; align-items: center; gap: var(--sp-2);
  color: var(--c-white); text-decoration: none;
  font-weight: 800; font-size: var(--fs-md); letter-spacing: 0.01em;
}
.site-logo__mark {
  width: 2rem; height: 2rem; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--c-amber-400), var(--c-harbor-500) 75%);
  flex: none;
}
/* Hamburger: checkbox hack, geen JS */
.nav-toggle { position: absolute; opacity: 0; pointer-events: none; }
.nav-toggle__icon {
  display: none;
  cursor: pointer;
  padding: var(--sp-2);
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: var(--radius-sm);
  width: 2.75rem; height: 2.5rem;
  position: relative;
}
.nav-toggle__icon::before,
.nav-toggle__icon::after,
.nav-toggle__icon span {
  content: ""; position: absolute; left: 0.6rem; right: 0.6rem;
  height: 2px; background: var(--c-white); border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle__icon::before { top: 0.65rem; }
.nav-toggle__icon span    { top: 1.15rem; }
.nav-toggle__icon::after  { top: 1.65rem; }
.nav-toggle:checked ~ .nav-toggle__icon::before { transform: translateY(0.5rem) rotate(45deg); }
.nav-toggle:checked ~ .nav-toggle__icon span    { opacity: 0; }
.nav-toggle:checked ~ .nav-toggle__icon::after  { transform: translateY(-0.5rem) rotate(-45deg); }

.site-nav__list {
  display: flex; flex-wrap: wrap; gap: var(--sp-1);
  list-style: none; margin: 0; padding: 0;
}
.site-nav a {
  display: block; padding: var(--sp-2) var(--sp-3);
  color: #eaf2f8; text-decoration: none;
  font-weight: 600; font-size: var(--fs-sm);
  border-radius: var(--radius-sm);
  transition: background var(--dur) var(--ease);
}
.site-nav a:hover, .site-nav a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.12);
}
.site-nav a[aria-current="page"] { box-shadow: inset 0 -3px 0 var(--c-amber-400); }

@media (max-width: 899px) {
  .nav-toggle__icon { display: block; }
  .site-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--c-harbor-900);
    box-shadow: var(--shadow-lg);
    max-height: 0; overflow: hidden;
    transition: max-height var(--dur) var(--ease);
  }
  .nav-toggle:checked ~ .site-nav { max-height: 24rem; }
  .site-nav__list { flex-direction: column; padding: var(--sp-3) var(--gutter) var(--sp-5); }
  .site-nav a { padding: var(--sp-3); font-size: var(--fs-base); }
}

/* ---------- 5. Hero ---------- */
.hero {
  position: relative;
  display: grid; align-items: end;
  min-height: clamp(24rem, 60vh, 38rem);
  background: var(--c-harbor-900);
  color: var(--c-white);
  overflow: clip;
}
.hero__media, .hero__media img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
}
.hero__scrim {
  position: absolute; inset: 0;
  background: linear-gradient(to top, var(--c-hero-scrim) 0%, rgba(11,45,69,0.15) 60%, transparent 100%);
}
.hero__content { position: relative; padding-block: var(--sp-7); max-width: 46rem; }
.hero__eyebrow {
  font-size: var(--fs-sm); font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--c-amber-400); margin-bottom: var(--sp-3);
}
.hero__title { font-size: var(--fs-hero); color: var(--c-white); margin-bottom: var(--sp-4); }
.hero__lead  { font-size: var(--fs-md); color: #e6eef4; max-width: 38rem; }

/* Hero variant: split image/tekst op desktop */
.hero--split { min-height: 0; align-items: stretch; }
@media (min-width: 900px) {
  .hero--split { grid-template-columns: 1.1fr 1fr; }
  .hero--split .hero__media { position: relative; inset: auto; }
  .hero--split .hero__scrim { display: none; }
  .hero--split .hero__content {
    display: grid; align-content: center;
    padding: var(--sp-8) var(--gutter);
    background: var(--c-harbor-900);
  }
}

/* ---------- 6. Cards ---------- */
.card {
  display: flex; flex-direction: column;
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card:hover, .card:focus-within {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card__media { aspect-ratio: 16 / 10; background: var(--c-harbor-100); }
.card__media img, .card__media svg { width: 100%; height: 100%; object-fit: cover; }
.card__body { padding: var(--sp-5); display: flex; flex-direction: column; gap: var(--sp-2); flex: 1; }
.card__tag {
  align-self: flex-start;
  font-size: var(--fs-xs); font-weight: 700;
  color: var(--c-harbor-700); background: var(--c-harbor-100);
  padding: var(--sp-1) var(--sp-3); border-radius: 999px;
}
.card__title { font-size: var(--fs-lg); margin: 0; }
.card__title a { color: var(--c-text); text-decoration: none; }
.card__title a:hover { color: var(--c-accent); }
.card__text { color: var(--c-text-muted); margin: 0; }
.card__link {
  margin-top: auto; font-weight: 700; font-size: var(--fs-sm);
  color: var(--c-accent); text-decoration: none;
}
.card__link::after { content: " →"; }

/* Kaart als hele klikbare eenheid */
a.card-link-block { text-decoration: none; color: inherit; }

/* ---------- 7. Buttons ---------- */
.btn {
  display: inline-block;
  padding: var(--sp-3) var(--sp-6);
  border-radius: 999px;
  font-weight: 700; font-size: var(--fs-sm);
  text-decoration: none; cursor: pointer;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--primary { background: var(--c-amber-400); color: #1c2733; } /* AA 9.0:1 */
.btn--secondary {
  background: transparent; color: var(--c-white);
  border: 2px solid rgba(255, 255, 255, 0.8);
}
.btn--secondary:hover { background: rgba(255, 255, 255, 0.12); }
.btn--on-light { background: var(--c-harbor-700); color: var(--c-white); }

/* ---------- 8. Chips / features / stats ---------- */
.chip-row { display: flex; flex-wrap: wrap; gap: var(--sp-2); list-style: none; padding: 0; margin: 0; }
.chip {
  background: var(--c-sand-200); color: #4a3a17;
  padding: var(--sp-1) var(--sp-4); border-radius: 999px;
  font-size: var(--fs-xs); font-weight: 700;
}
@media (prefers-color-scheme: dark) {
  .chip { background: #24313d; color: var(--c-sand-200); }
}
.stat { text-align: center; padding: var(--sp-4); }
.stat__num { font-size: var(--fs-2xl); font-weight: 800; color: var(--c-accent); line-height: 1; }
.section--harbor .stat__num { color: var(--c-amber-400); }
.stat__label { font-size: var(--fs-sm); color: var(--c-text-muted); margin-top: var(--sp-2); }

/* ---------- 9. Breadcrumb & page head ---------- */
.breadcrumb { font-size: var(--fs-sm); color: var(--c-text-muted); padding-block: var(--sp-4); }
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: var(--sp-2); margin: 0; padding: 0; }
.breadcrumb li + li::before { content: "›"; margin-right: var(--sp-2); color: var(--c-text-muted); }
.page-head { padding-block: var(--sp-6) var(--sp-5); }
.page-head p.lede { font-size: var(--fs-md); color: var(--c-text-muted); max-width: 46rem; }

/* ---------- 10. Footer ---------- */
.site-footer {
  background: var(--c-harbor-900);
  color: #dbe7ef; /* AA 11.6:1 */
  padding-block: var(--sp-7) var(--sp-5);
  margin-top: var(--sp-section);
}
.site-footer a { color: var(--c-amber-400); text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer__grid { display: grid; gap: var(--sp-6); grid-template-columns: 1fr; }
@media (min-width: 720px) { .site-footer__grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }
.site-footer h3 {
  font-size: var(--fs-sm); text-transform: uppercase; letter-spacing: 0.1em;
  color: #9fc0d8; margin-bottom: var(--sp-3);
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--sp-2); }
.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  margin-top: var(--sp-6); padding-top: var(--sp-4);
  font-size: var(--fs-xs); color: #9fc0d8;
  display: flex; flex-wrap: wrap; gap: var(--sp-4); justify-content: space-between;
}

/* ---------- 11. Placeholder media (inline SVG-vervangend) ---------- */
.ph-img {
  width: 100%; height: 100%; min-height: 10rem;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--c-harbor-500), var(--c-harbor-900) 70%);
  color: #eaf2f8; font-size: var(--fs-sm); font-weight: 600;
  text-align: center; padding: var(--sp-4);
}
.ph-img--sand { background: linear-gradient(135deg, var(--c-sand-500), var(--c-harbor-700) 90%); }

/* ---------- 12. Print ---------- */
@media print {
  .site-header, .site-footer, .hero__scrim { display: none; }
  body { color: #000; background: #fff; }
}