/**
 * KerionSteen — Hoofdstijlblad
 * ============================================================
 * Bestand:    assets/css/main.css
 * Gebruikt door: index.html
 *
 * Inhoudsopgave:
 *  1.  Variabelen & reset
 *  2.  Typografie
 *  3.  Layout hulpklassen
 *  4.  Knoppen
 *  5.  Navigatie
 *  6.  Mobiel menu
 *  7.  Hero sectie
 *  8.  USP-ticker
 *  9.  Over Kerion
 * 10.  Product kaarten
 * 11.  Technische specificaties
 * 12.  Duurzaamheid
 * 13.  Toepassingen
 * 14.  Downloads
 * 15.  Distributeur
 * 16.  Contactformulier
 * 17.  Footer
 * 18.  Terug-naar-boven knop
 * 19.  Animaties
 * 20.  Scrollbar
 * ============================================================
 */


/* ============================================================
   1. VARIABELEN & RESET
   ============================================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Achtergrondkleuren */
  --bg:        #F4F1EB;   /* Hoofdachtergrond (lijn/creme) */
  --bg2:       #E8E2D8;   /* Alternatieve achtergrond (iets donkerder) */
  --light:     #FDFAF4;   /* Lichtste tint, voor kaarten */

  /* Tekstkleuren */
  --dark:      #1A2820;   /* Donkergroen – koppen en donkere secties */
  --mid:       #2E3C34;   /* Middentoon – subtitels */

  /* Merkkleuren (uit logo) */
  --accent:    #C07A1A;   /* Amber/goud – primaire accentkleur (hexagon) */
  --accent2:   #8A5510;   /* Donker amber – hover-staat van accent */
  --green:     #1F4B38;   /* Bosgroen – secundaire merkkleur (K-letter) */
  --stone:     #5A7060;   /* Steengroen – tertiaire tint */

  /* UI kleuren */
  --border:    #C8D4CC;   /* Rand- en scheidingskleur */
  --radius:    4px;        /* Standaard border-radius */
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

/* Scrollbar styling (WebKit browsers) */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--stone); border-radius: 3px; }


/* ============================================================
   2. TYPOGRAFIE
   ============================================================ */

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg);
  color: var(--dark);
  overflow-x: hidden;
  line-height: 1.7;
}

/* Schreefloze serif voor koppen (geladen via Google Fonts in HTML) */
h1, h2, h3, h4 {
  font-family: 'Fraunces', serif;
  line-height: 1.1;
  font-weight: 500;
}

h1 {
  font-size: clamp(2.8rem, 6vw, 5.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -0.01em;
}

h3 { font-size: clamp(1.3rem, 2.5vw, 1.8rem); }

/* Sectielabel – klein hoofdletterkapitaal boven titels */
h4 {
  font-size: 1.1rem;
  font-weight: 600;
  font-family: 'Outfit', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

p {
  line-height: 1.7;
  color: #3A3028;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Label boven secties (bijv. "Het product", "Duurzaamheid") */
.section-label {
  font-family: 'Outfit', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 1rem;
  display: block;
}


/* ============================================================
   3. LAYOUT HULPKLASSEN
   ============================================================ */

/* Centreer content met max-breedte */
.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Standaard sectie-opvulling */
.section { padding: 6rem 0; }

/* Alternatieve achtergrond voor afwisseling */
.section--alt { background: var(--bg2); }

/* Donkere sectie (bijv. duurzaamheid) */
.section--dark {
  background: var(--dark);
  color: var(--light);
}

.section--dark p           { color: #D8D0C4; }
.section--dark .section-label { color: var(--accent); }

/* Rasterindelingen */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }

/* Responsive breekpunten */
@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; gap: 2.5rem; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .section { padding: 4rem 0; }
  h1 { font-size: 2.4rem; }
}


/* ============================================================
   4. KNOPPEN
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  font-family: 'Outfit', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: var(--radius);
  transition: all 0.25s ease;
  cursor: pointer;
  border: none;
}

/* Primaire knop – amber/goud */
.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent2);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(192, 122, 26, 0.35);
}

/* Omrande knop – donker op lichte achtergrond */
.btn-outline {
  background: transparent;
  color: var(--dark);
  border: 1.5px solid var(--dark);
}

.btn-outline:hover {
  background: var(--dark);
  color: var(--light);
}

/* Omrande knop – licht op donkere achtergrond */
.btn-outline-light {
  background: transparent;
  color: var(--light);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
}


/* ============================================================
   5. NAVIGATIE
   ============================================================ */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.2rem 0;
  transition: all 0.3s ease;
}

/* Frosted-glass effect na scrollen (klasse toegevoegd via JS) */
nav.scrolled {
  background: rgba(244, 241, 235, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border);
  padding: 0.8rem 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo wrapper */
.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo img {
  height: 90px;
  width: auto;
  display: block;
}

/* Horizontale navigatielinks (desktop) */
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: #2E3C34;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.actief {
  color: var(--accent);
}

.nav-cta { margin-left: 1rem; }


/* ============================================================
   6. MOBIEL MENU
   ============================================================ */

/* Hamburger-knop (verborgen op desktop) */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all 0.3s;
}

/* Volledig scherm overlay menu (mobiel) */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--light);
  z-index: 99;
  padding: 6rem 2rem 2rem;
  flex-direction: column;
  gap: 2rem;
}

.mobile-menu.open { display: flex; }

.mobile-menu a {
  font-family: 'Fraunces', serif;
  font-size: 2rem;
  font-weight: 500;
  color: var(--dark);
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

/* Schakel hamburger in op mobiel */
@media (max-width: 768px) {
  .nav-links,
  .nav-cta { display: none; }
  .hamburger { display: flex; }
}


/* ============================================================
   7. HERO SECTIE
   ============================================================ */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  position: relative;
  overflow: hidden;
  background: var(--dark);
}

/* Kleurverloop achtergrond (licht goud + donkergroen) */
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(192, 122, 26, 0.20) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 20% 80%, rgba(31, 75, 56, 0.25) 0%, transparent 50%);
}

/* Subtiel rasterpatroon over achtergrond */
.hero-texture {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='0' y='0' width='60' height='60' fill='none' stroke='%23ffffff' stroke-width='0.5'/%3E%3C/svg%3E");
}

/* Geanimeerd blokkengrid (rechtsboven) – visualiseert het product */
.hero-block-grid {
  position: absolute;
  right: -2%;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  width: clamp(280px, 38vw, 520px);
  opacity: 0.7;
}

.hero-block {
  aspect-ratio: 2 / 1;
  border-radius: 3px;
  animation: fadeBlock 0.6s ease forwards;
  opacity: 0;
}

/* Elke blok een eigen vertraging voor getrapt effect */
.hero-block:nth-child(1)  { background: #243D2E; animation-delay: 0.1s; }
.hero-block:nth-child(2)  { background: #1F4B38; animation-delay: 0.2s; }
.hero-block:nth-child(3)  { background: #162E22; animation-delay: 0.3s; }
.hero-block:nth-child(4)  { background: #2A5040; animation-delay: 0.25s; }
.hero-block:nth-child(5)  { background: var(--accent); animation-delay: 0.35s; }
.hero-block:nth-child(6)  { background: #1F4B38; animation-delay: 0.4s; }
.hero-block:nth-child(7)  { background: #162E22; animation-delay: 0.3s; }
.hero-block:nth-child(8)  { background: #2A5040; animation-delay: 0.45s; }
.hero-block:nth-child(9)  { background: #243D2E; animation-delay: 0.5s; }
.hero-block:nth-child(10) { background: var(--accent); opacity: 0; animation-delay: 0.2s; }
.hero-block:nth-child(11) { background: #1F4B38; animation-delay: 0.35s; }
.hero-block:nth-child(12) { background: #162E22; animation-delay: 0.55s; }

/* Hero tekst en knoppen */
.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 2rem 6rem;
  max-width: 1180px;
  margin: 0 auto;
  width: 100%;
}

/* Klein label boven de hoofdtekst */
.hero-eyebrow {
  font-family: 'Outfit', sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideUp 0.8s ease 0.2s both;
}

/* Decoratieve lijn vóór het label */
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 32px;
  height: 1.5px;
  background: var(--accent);
}

.hero h1 {
  color: var(--light);
  max-width: 700px;
  animation: slideUp 0.8s ease 0.35s both;
}

/* Cursief gedeelte in de koptekst */
.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-sub {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  color: #C8C0B0;
  max-width: 500px;
  line-height: 1.65;
  animation: slideUp 0.8s ease 0.5s both;
}

.hero-actions {
  margin-top: 2.5rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: slideUp 0.8s ease 0.65s both;
}

/* Scroll-indicator onderaan de hero */
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--stone);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2s ease infinite;
}

.hero-scroll svg {
  width: 20px;
  height: 20px;
  stroke: var(--stone);
}


/* ============================================================
   8. USP-TICKER
   ============================================================ */

.usp-strip {
  background: var(--accent);
  padding: 1.2rem 0;
  overflow: hidden;
}

/* Oneindige scrollband */
.usp-track {
  display: flex;
  gap: 3rem;
  align-items: center;
  animation: scroll-track 25s linear infinite;
  width: max-content;
}

.usp-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  white-space: nowrap;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: white;
}

/* Scheidingspuntje tussen items */
.usp-dot {
  width: 4px;
  height: 4px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 50%;
}


/* ============================================================
   9. OVER KERION
   ============================================================ */

.about-visual { position: relative; }

/* Visueel blokkenpatroon als placeholder voor foto */
.about-visual-main {
  width: 100%;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, var(--bg2) 0%, var(--border) 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border);
}

.block-pattern {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 6px;
  padding: 2rem;
  width: 100%;
}

.bp          { aspect-ratio: 2 / 1; border-radius: 2px; background: var(--border); }
.bp.accent   { background: var(--accent); opacity: 0.8; }
.bp.dark     { background: var(--stone); opacity: 0.5; }

/* Statistiek-kaart rechtsonder het blokkenpatroon */
.about-stat {
  position: absolute;
  bottom: -1.5rem;
  right: -1.5rem;
  background: var(--green);
  color: var(--light);
  padding: 1.5rem 2rem;
  border-radius: 6px;
  text-align: center;
}

.about-stat strong {
  display: block;
  font-family: 'Fraunces', serif;
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.about-stat span {
  font-size: 0.8rem;
  color: var(--stone);
  letter-spacing: 0.05em;
}

/* Lijst met kernpunten (USP-lijst) */
.feature-list { list-style: none; margin-top: 2rem; }

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
  color: #3A3028;
}

.feature-list li:last-child { border-bottom: none; }

/* Groen vinkje-icoontje */
.feature-icon {
  width: 32px;
  height: 32px;
  min-width: 32px;
  background: rgba(192, 122, 26, 0.1);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.9rem;
}


/* ============================================================
   10. PRODUCT KAARTEN
   ============================================================ */

.product-card {
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  transition: all 0.25s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(28, 24, 16, 0.12);
  border-color: var(--accent);
}

.product-card-icon {
  width: 56px;
  height: 56px;
  background: var(--bg2);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
}

.product-card-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--accent);
  fill: none;
}

.product-card h3 { font-size: 1.25rem; margin-bottom: 0.75rem; }
.product-card p  { font-size: 0.9rem; color: #3A3028; }


/* ============================================================
   11. TECHNISCHE SPECIFICATIES
   ============================================================ */

.specs-wrap { overflow-x: auto; margin-top: 3rem; }

.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

/* Tabelkoptekst op donkere achtergrond */
.specs-table thead tr   { background: var(--dark); color: var(--light); }
.specs-table thead th   {
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}

.specs-table tbody tr   { border-bottom: 1px solid var(--border); transition: background 0.15s; }
.specs-table tbody tr:hover { background: rgba(192, 122, 26, 0.05); }
.specs-table tbody td   { padding: 0.9rem 1.25rem; color: #3A3028; }

/* Eerste kolom (eigenschapsnaam) vetgedrukt */
.specs-table tbody td:first-child { font-weight: 600; color: var(--dark); }

/* Uitgelichte waarden (bijv. lambda, Rc) */
.specs-table tbody td.highlight { color: var(--accent); font-weight: 600; }

.specs-note {
  margin-top: 1rem;
  font-size: 0.8rem;
  color: #506858;
  font-style: italic;
}


/* ============================================================
   12. DUURZAAMHEID
   ============================================================ */

/* Raster van drie statistiekkaarten */
.sustainability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

@media (max-width: 700px) {
  .sustainability-grid { grid-template-columns: 1fr; }
}

.sustain-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 2rem;
}

/* Groot kengetal bovenaan de kaart */
.sustain-number {
  font-family: 'Fraunces', serif;
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.sustain-card h4 { color: var(--light); margin-bottom: 0.5rem; font-size: 0.9rem; }
.sustain-card p  { font-size: 0.85rem; color: #D0C8BC; }

/* Certificeringsbadges (EPD, Kiwa, etc.) */
.cert-badges {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-top: 2.5rem;
  align-items: center;
}

.cert-badge {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50px;
  padding: 0.6rem 1.2rem;
  font-size: 0.8rem;
  color: #D8D0C4;
}

.cert-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
}


/* ============================================================
   13. TOEPASSINGEN
   ============================================================ */

.toepassing-card {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background: var(--dark);
  padding: 2.5rem 2rem;
  display: flex;
  flex-direction: column;
  min-height: 220px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.3s ease;
}

.toepassing-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

/* Decoratief groot getal op de achtergrond */
.toepassing-number {
  font-family: 'Fraunces', serif;
  font-size: 4rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.06);
  position: absolute;
  top: -0.5rem;
  right: 1.5rem;
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.toepassing-card h3 { font-size: 1.15rem; color: var(--light); margin-bottom: 0.75rem; position: relative; }
.toepassing-card p  { font-size: 0.875rem; position: relative; color: #C0B8AC; }


/* ============================================================
   14. DOWNLOADS
   ============================================================ */

.download-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}

.download-item:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 16px rgba(192, 122, 26, 0.1);
}

.download-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: rgba(192, 122, 26, 0.1);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-icon svg { width: 22px; height: 22px; stroke: var(--accent); fill: none; }

.download-info              { flex: 1; }
.download-info strong       { display: block; font-size: 0.95rem; margin-bottom: 0.2rem; }
.download-info span         { font-size: 0.8rem; color: #506858; }

/* Pijl die naar rechts schuift bij hover */
.download-arrow {
  color: var(--stone);
  font-size: 1.2rem;
  transition: transform 0.2s;
}

.download-item:hover .download-arrow {
  transform: translateX(3px);
  color: var(--accent);
}


/* ============================================================
   15. DISTRIBUTEUR (BMN)
   ============================================================ */

.distributor-box {
  background: var(--light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 3rem;
  display: flex;
  align-items: center;
  gap: 3rem;
  flex-wrap: wrap;
}

/* Placeholder totdat het BMN-logo beschikbaar is */
.distributor-logo-placeholder {
  width: 160px;
  min-width: 160px;
  height: 72px;
  background: var(--bg2);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--stone);
  letter-spacing: 0.05em;
  border: 1px solid var(--border);
}

.distributor-info           { flex: 1; min-width: 240px; }
.distributor-info h3        { font-size: 1.3rem; margin-bottom: 0.75rem; }
.distributor-info p         { font-size: 0.9rem; color: #3A3028; }

/* Link naar bmn.nl */
.distributor-info a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  margin-top: 1rem;
  transition: gap 0.2s;
}

.distributor-info a:hover { gap: 0.7rem; }


/* ============================================================
   16. CONTACTFORMULIER
   ============================================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 5rem;
  align-items: start;
}

@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
}

.contact-info h2 { margin-bottom: 1.5rem; }

/* Contactregel (icoon + tekst) */
.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-detail-icon {
  width: 38px;
  height: 38px;
  min-width: 38px;
  background: rgba(192, 122, 26, 0.1);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-detail-icon svg    { width: 18px; height: 18px; stroke: var(--accent); fill: none; }
.contact-detail strong      { display: block; font-size: 0.875rem; color: var(--dark); margin-bottom: 0.15rem; }
.contact-detail span        { font-size: 0.9rem; color: #3A3028; }

/* Formuliervelden */
.form-group   { margin-bottom: 1.25rem; }
.form-row     { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

@media (max-width: 500px) {
  .form-row { grid-template-columns: 1fr; }
}

label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #2E3C34;
  margin-bottom: 0.5rem;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--light);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: 'Outfit', sans-serif;
  font-size: 0.95rem;
  color: var(--dark);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(192, 122, 26, 0.1);
}

textarea { resize: vertical; min-height: 120px; }

/* Privacyakkoord checkbox */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  min-width: 18px;
  margin-top: 2px;
  accent-color: var(--accent);
}

.form-check label {
  text-transform: none;
  letter-spacing: 0;
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--mid);
}

/* Terugkoppeling na verzenden */
.form-success {
  display: none;
  padding: 1rem 1.25rem;
  background: rgba(31, 75, 56, 0.1);
  border: 1px solid var(--green);
  border-radius: var(--radius);
  color: var(--green);
  font-size: 0.9rem;
  font-weight: 500;
}

/* Foutmelding na mislukt verzenden */
.form-error-box {
  display: none;
  padding: 1rem 1.25rem;
  background: rgba(180, 40, 40, 0.08);
  border: 1px solid #c04040;
  border-radius: var(--radius);
  color: #a03030;
  font-size: 0.9rem;
}


/* ============================================================
   17. FOOTER
   ============================================================ */

footer {
  background: var(--dark);
  color: var(--light);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

@media (max-width: 800px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; } }
@media (max-width: 480px) { .footer-grid { grid-template-columns: 1fr; } }

/* Logo in footer */
.footer-brand .footer-logo     { display: inline-flex; margin-bottom: 1rem; }
.footer-brand .footer-logo img { height: 90px; width: auto; }
.footer-brand p                { font-size: 0.85rem; color: #B0A898; line-height: 1.6; max-width: 260px; }

/* Kolomkoppen */
.footer-col h5 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--stone);
  margin-bottom: 1.2rem;
}

.footer-col ul           { list-style: none; }
.footer-col ul li        { margin-bottom: 0.6rem; }
.footer-col ul li a      { font-size: 0.875rem; color: #B0A898; transition: color 0.2s; }
.footer-col ul li a:hover { color: var(--light); }

/* Onderste balk met copyright en links */
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p   { font-size: 0.8rem; color: #9A9080; }
.footer-bottom a   { color: var(--stone); }


/* ============================================================
   18. TERUG-NAAR-BOVEN KNOP
   ============================================================ */

#back-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  z-index: 50;
}

/* Zichtbaar na 400px scrollen (klasse toegevoegd via JS) */
#back-top.visible       { opacity: 1; pointer-events: auto; }
#back-top:hover         { background: var(--accent2); transform: translateY(-2px); }


/* ============================================================
   19. ANIMATIES
   ============================================================ */

/* Blokken in de hero vagen in */
@keyframes fadeBlock {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

/* Tekst schuift omhoog bij laden */
@keyframes slideUp {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Pijltje stuitert op en neer */
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* USP-tekst scrolt horizontaal door */
@keyframes scroll-track {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Elementen verschijnen bij scrollen (triggered via IntersectionObserver in JS) */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible          { opacity: 1; transform: translateY(0); }
.reveal-delay-1          { transition-delay: 0.1s; }
.reveal-delay-2          { transition-delay: 0.2s; }
.reveal-delay-3          { transition-delay: 0.3s; }