/* =====================================================================
   base.css — Van de Pol Infra
   Reset, typografie, layout en componenten. Gebruikt variabelen uit
   themes.css. Mobile-first.
   ===================================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, picture, svg { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; cursor: pointer; }
ul { list-style: none; padding: 0; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- Typografie ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  line-height: 1.05;
  letter-spacing: .01em;
  text-transform: uppercase;
  font-weight: 700;
}
/* min 1.9rem zodat het langste woord ("WATERINFRASTRUCTUUR") op 320px nog op één regel past */
h1 { font-size: clamp(1.9rem, 7vw, 4.4rem); }
h2 { font-size: clamp(1.9rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.4vw, 1.7rem); }
p  { color: var(--text-muted); }
.lead { font-size: clamp(1.05rem, 1.7vw, 1.3rem); color: var(--text-muted); }

/* ---------- Layout helpers ---------- */
.container { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }
.section { padding: clamp(3.5rem, 8vw, 7rem) 0; }
.section--alt { background: var(--bg-alt); }
.section--contrast { background: var(--bg-contrast); color: var(--text-oncontrast); }
.section--contrast h1, .section--contrast h2, .section--contrast h3 { color: var(--text-oncontrast); }
.section--contrast p { color: var(--muted-oncontrast); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: .14em;
  font-weight: 600;
  font-size: clamp(.92rem, 1.2vw, 1.05rem);
  color: var(--text);            /* leesbare tekst i.p.v. geel op wit (WCAG) */
  margin-bottom: .9rem;
}
.eyebrow::before {
  content: "";
  width: 32px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);     /* het gele accent zit nu in het streepje */
}
.section--contrast .eyebrow,
.page-hero .eyebrow { color: var(--text-oncontrast); }

.section-head { max-width: 720px; margin-bottom: clamp(2rem, 4vw, 3rem); }
.section-head p { margin-top: .9rem; }

/* ---------- Knoppen ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .85rem 1.5rem;
  border-radius: var(--radius);
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: .04em;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--accent); color: var(--accent-text); }
.btn--primary:hover { background: var(--accent-strong); }
.btn--ghost { background: transparent; border-color: currentColor; color: inherit; }
.btn--ghost:hover { background: rgba(127,127,127,.12); }
.btn--lg { padding: 1rem 1.9rem; font-size: 1.1rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 76px;
}
.brand { display: flex; align-items: center; }
.brand img {
  height: 92px; width: auto; filter: var(--logo-filter);
  transform: rotate(-90deg);
  /* Het logo is staand opgeslagen en wordt rechtop gedraaid. Een gedraaid element
     behoudt zijn oude layout-box (≈49×92), dus reserveren we met marges de
     gedraaide voetafdruk (≈92×49) zodat het binnen het grid/container blijft. */
  margin: -21.5px 21.5px;
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 46px; height: 46px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.nav-toggle span {
  display: block; height: 2px; width: 22px; margin-inline: auto;
  background: var(--text); transition: transform .2s ease, opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.main-nav ul { display: flex; align-items: center; gap: .35rem; }
.main-nav a {
  text-decoration: none;
  font-family: var(--font-head);
  text-transform: uppercase;
  letter-spacing: .04em;
  font-weight: 600;
  font-size: 1.02rem;
  padding: .5rem .8rem;
  border-radius: var(--radius);
  color: var(--text);
}
.main-nav a:hover { background: var(--bg-alt); }
.main-nav a.is-active { color: var(--text); position: relative; }
.main-nav a.is-active::after {
  content: "";
  position: absolute;
  left: .8rem; right: .8rem; bottom: .3rem;
  height: 3px; border-radius: 2px;
  background: var(--accent);     /* geel onderstreept i.p.v. gele tekst */
}
.main-nav .btn { color: var(--accent-text); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: clamp(440px, 72vh, 680px);
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0;
  background-image: url('../public/HeroFoto.jpg');   /* fallback voor oude browsers */
  background-size: cover;
  background-position: center;
  background-attachment: fixed;   /* achtergrond blijft staan terwijl content scrollt */
}
/* moderne browsers: lichtere webp, met jpg als fallback in de image-set */
@supports (background-image: image-set(url("x.webp") type("image/webp"))) {
  .hero__bg {
    background-image: image-set(
      url('../public/HeroFoto.webp') type('image/webp'),
      url('../public/HeroFoto.jpg') type('image/jpeg'));
  }
}
.hero__bg img { width: 100%; height: 100%; object-fit: cover; }
.hero__bg::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(8,9,11,.85) 0%, rgba(8,9,11,.55) 50%, rgba(8,9,11,.25) 100%);
}
.hero .container { position: relative; z-index: 2; }
.hero__inner { max-width: 720px; padding: 3rem 0; }
.hero h1 { color: #fff; }
.hero .lead { color: rgba(255,255,255,.88); margin: 1.2rem 0 2rem; }
.hero__accent { color: var(--accent); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .8rem; }
.hero .btn--ghost { color: #fff; }

/* Compacte page-hero voor binnenpagina's */
.page-hero {
  background: var(--bg-contrast);
  color: var(--text-oncontrast);
  padding: clamp(3rem, 7vw, 5.5rem) 0 clamp(2.5rem, 5vw, 4rem);
}
.page-hero h1 { color: var(--text-oncontrast); }
.page-hero p { color: var(--muted-oncontrast); max-width: 640px; margin-top: 1rem; }

/* ---------- Grids & kaarten ---------- */
.grid { display: grid; gap: 1.5rem; }
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  box-shadow: var(--shadow);
  height: 100%;
}
.card h3 { margin-bottom: .6rem; }
.card__icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: var(--radius);
  background: var(--accent);
  color: var(--accent-text);
  margin-bottom: 1rem;
}
.card__icon svg { width: 26px; height: 26px; }

/* Split: tekst + beeld */
.split { display: grid; gap: clamp(2rem, 5vw, 4rem); align-items: center; grid-template-columns: 1fr; }
.split__text p { margin-top: 1.1rem; }
.split__text .checklist { margin-top: 1.4rem; }
.split__media img { width: 100%; aspect-ratio: 16 / 9; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); object-fit: cover; }
.split__media { position: relative; }
/* Op mobiel deze foto minder hoog (anders ~525px door de height-attribuut) */
@media (max-width: 699px) {
  .media-short-mobile { aspect-ratio: auto; height: 300px; }
}

/* ---------- Feature/badge-lijst ---------- */
.checklist { display: grid; gap: .9rem; margin-top: 1.5rem; }
.checklist li {
  display: flex; align-items: flex-start; gap: .75rem;
  font-weight: 500; color: var(--text);
}
.checklist li::before {
  content: "";
  flex: 0 0 auto;
  width: 22px; height: 22px; margin-top: .15rem;
  border-radius: 50%;
  background: var(--accent);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/16px no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='black' d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/16px no-repeat;
}
.section--contrast .checklist li { color: var(--text-oncontrast); }

/* Stats / badge-rij */
.badges { display: grid; grid-template-columns: 1fr; gap: 1rem; margin-top: 2rem; }
.badge {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  box-shadow: var(--shadow);
}
.badge strong { display: block; font-family: var(--font-head); font-size: 1.7rem; line-height: 1; color: var(--text); }
.badge span { font-size: .92rem; color: var(--text-muted); }

/* ---------- Stappen/prioriteit ---------- */
.steps { display: grid; gap: 1rem; counter-reset: step; grid-template-columns: 1fr; }
.step {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 1.6rem; box-shadow: var(--shadow);
  position: relative;
}
.step::before {
  counter-increment: step; content: counter(step);
  font-family: var(--font-head); font-size: 1.4rem; font-weight: 700;
  color: var(--accent-text); background: var(--accent);
  width: 42px; height: 42px; border-radius: 50%;
  display: grid; place-items: center; margin-bottom: .9rem;
}

/* ---------- Galerij ---------- */
.gallery { display: grid; gap: 1rem; grid-template-columns: 1fr; }
.gallery figure { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.gallery img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; transition: transform .4s ease; }
.gallery figure:hover img { transform: scale(1.05); }
.gallery figcaption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 1.4rem 1rem .9rem;
  font-size: .9rem; color: #fff;
  background: linear-gradient(transparent, rgba(0,0,0,.7));
}

/* ---------- Carousel ---------- */
/* --img-h = hoogte van de foto; de pijlen worden op de helft daarvan gecentreerd */
.carousel {
  --img-h: clamp(260px, 52vw, 560px);
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.carousel__viewport { overflow: hidden; }
.carousel__track { display: flex; transition: transform .9s cubic-bezier(.22,1,.36,1); }
.carousel__slide { position: relative; flex: 0 0 100%; }
.carousel__slide img { width: 100%; height: var(--img-h); object-fit: cover; display: block; }

/* Zwevend onderschrift-kaartje linksonder op de foto */
.carousel__slide figcaption {
  position: absolute;
  left: 1rem; right: 1rem; bottom: 1rem;
  background: color-mix(in srgb, #0a0b0d 72%, transparent);
  backdrop-filter: blur(8px);
  color: #fff;
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  padding: .85rem 1.1rem;
  font-size: clamp(.85rem, 2.2vw, .98rem);
  line-height: 1.45;
  box-shadow: 0 10px 30px rgba(0,0,0,.4);
}
@media (min-width: 700px) {
  .carousel__slide figcaption { left: 1.5rem; right: auto; bottom: 1.5rem; max-width: min(58%, 520px); }
}

/* Op mobiel: geen blokkig kaartje, maar tekst op een zacht donker verloop
   onderaan de foto. Bedekt de (lage) foto minimaal en oogt lichter. */
@media (max-width: 699px) {
  .carousel__slide figcaption {
    left: 0; right: 0; bottom: 0;
    padding: 2.6rem 1.1rem 1.1rem;
    border-radius: 0;
    border-left: 0;
    background: linear-gradient(to top,
      rgba(10,11,13,.9) 0%,
      rgba(10,11,13,.7) 45%,
      rgba(10,11,13,0) 100%);
    backdrop-filter: none;
    box-shadow: none;
    text-shadow: 0 1px 3px rgba(0,0,0,.55);
  }
}

.carousel__btn {
  position: absolute; top: calc(var(--img-h) / 2); transform: translateY(-50%);
  width: 46px; height: 46px; border-radius: 50%;
  background: color-mix(in srgb, #000 45%, transparent);
  border: 1px solid rgba(255,255,255,.5); color: #fff;
  display: grid; place-items: center; font-size: 1.6rem; line-height: 1;
  backdrop-filter: blur(4px); transition: background .15s ease, transform .15s ease;
  z-index: 3;
}
.carousel__btn:hover { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.carousel__btn--prev { left: .8rem; }
.carousel__btn--next { right: .8rem; }
.carousel__dots {
  position: absolute; top: 1rem; left: 0; right: 0;
  display: flex; gap: .5rem; justify-content: center; z-index: 2;
}
.carousel__dot {
  width: 10px; height: 10px; border-radius: 50%; padding: 0;
  border: 2px solid #fff; background: rgba(0,0,0,.25); transition: background .2s ease;
  box-shadow: 0 0 4px rgba(0,0,0,.5);
}
.carousel__dot[aria-current="true"] { background: var(--accent); border-color: var(--accent); }

/* ---------- CTA-band ---------- */
.cta-band .container {
  position: relative;
  overflow: hidden;
  background: var(--bg-contrast);
  color: var(--text-oncontrast);
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 5vw, 4rem);
  display: grid;
  gap: 1.2rem;
  place-items: center;
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.cta-band .container::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0;
  height: 5px;
  background: var(--accent);
}
.cta-band .eyebrow { color: var(--text-oncontrast); margin-bottom: 0; }
.cta-band h2 { color: var(--text-oncontrast); max-width: 28ch; text-wrap: balance; }
.cta-band .lead { color: var(--muted-oncontrast); max-width: 56ch; }
.cta-band .btn { margin-top: .5rem; }

/* ---------- Formulier ---------- */
.form-wrap { display: grid; gap: clamp(2rem, 5vw, 4rem); grid-template-columns: 1fr; align-items: start; }
.field { display: grid; gap: .4rem; margin-bottom: 1.1rem; }
.field label { font-weight: 600; font-size: .95rem; }
.field input, .field textarea {
  font: inherit; color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .8rem .9rem;
  width: 100%;
}
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--accent-strong);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 40%, transparent);
}
.field textarea { resize: vertical; min-height: 150px; }
.hp { position: absolute; left: -9999px; }
.form-note { font-size: .9rem; margin-top: .5rem; }

/* ---------- Prose (privacy / tekstpagina's) ---------- */
.prose { max-width: 760px; }
.prose > p:first-of-type { font-size: 1.1rem; }
.prose h2 {
  font-size: clamp(1.3rem, 2.6vw, 1.7rem);
  margin-top: 2.6rem; margin-bottom: .8rem;
  padding-top: 1.6rem; border-top: 1px solid var(--border);
}
.prose h2:first-of-type { margin-top: 0; padding-top: 0; border-top: 0; }
.prose p { margin-bottom: 1rem; }
.prose ul { margin: 0 0 1.3rem; display: grid; gap: .55rem; }
.prose ul li { position: relative; padding-left: 1.6rem; color: var(--text-muted); }
.prose ul li::before {
  content: ""; position: absolute; left: 0; top: .55em;
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
}
.prose a {
  color: var(--text); font-weight: 600;
  text-decoration: underline; text-decoration-color: var(--accent);
  text-underline-offset: 3px; text-decoration-thickness: 2px;
}
.prose a:hover { text-decoration-color: var(--text); }
.prose .meta { color: var(--text-muted); font-size: .95rem; margin-bottom: 1.8rem; }

/* Privacy-link onderaan de footer */
.footer-legal { display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; }
.footer-legal a { text-decoration: none; }

/* ---------- Footer ---------- */
.site-footer { background: var(--bg-contrast); color: var(--text-oncontrast); padding: clamp(3rem,6vw,4.5rem) 0 2rem; }
.site-footer .footer-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
.site-footer img { height: 96px; filter: invert(1) brightness(1.7); transform: rotate(-90deg); transform-origin: center; margin: -22.4px 22.4px 1rem; }
.site-footer h4 { color: var(--text-oncontrast); margin-bottom: 1rem; font-size: 1.05rem; }
.site-footer p { color: var(--muted-oncontrast); }
.site-footer a { color: var(--muted-oncontrast); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer .btn--primary { color: var(--accent-text); }
.site-footer .btn--primary:hover { color: var(--accent-text); }
.site-footer .footer-nav li { margin-bottom: .5rem; }
.site-footer .footer-certs li { margin-bottom: .5rem; color: var(--muted-oncontrast); display: flex; gap: .5rem; align-items: center; }
.site-footer .footer-certs li::before { content: "✓"; color: var(--accent); font-weight: 700; }
.footer-bottom {
  margin-top: 2.5rem; padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,.12);
  display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; justify-content: space-between;
  font-size: .88rem; color: var(--muted-oncontrast);
}

/* ---------- Scroll-reveal animaties ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .7s cubic-bezier(.16,1,.3,1), transform .7s cubic-bezier(.16,1,.3,1);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .nav-toggle { display: inline-flex; }
  .main-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    display: none;
  }
  .main-nav.is-open { display: block; }
  .main-nav ul { flex-direction: column; align-items: stretch; gap: .25rem; padding: .6rem; }
  .main-nav li:not(:last-child) { border-bottom: 1px solid var(--border); }
  .main-nav a {
    display: flex;
    align-items: center;
    min-height: 52px;
    padding: .9rem 1rem;
    font-size: 1.1rem;
    border-radius: var(--radius);
  }
  .main-nav a.is-active::after { display: none; }
  .main-nav a.is-active { color: var(--text); background: var(--bg-alt); box-shadow: inset 3px 0 0 var(--accent); }
  .main-nav .btn { justify-content: center; min-height: 52px; margin-top: .5rem; }
}
@media (min-width: 821px) {
  .nav-toggle { display: none; }
  .main-nav { display: block !important; }
}

@media (min-width: 640px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .badges { grid-template-columns: repeat(2, 1fr); }
  .gallery { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 900px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .split { grid-template-columns: 1fr 1fr; }
  .split--reverse .split__media { order: -1; }
  .form-wrap { grid-template-columns: 1.2fr .8fr; }
  .gallery { grid-template-columns: repeat(3, 1fr); }
  .site-footer .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto; transition: none !important; animation: none !important; }
  .reveal { opacity: 1 !important; transform: none !important; }
}