/* 040Klimaat - warme, toegankelijke stijl in puur CSS */

:root {
  --bg: #faf7f2;
  --surface: #f5e6d3;
  --surface-2: #efe3d0;
  --primary: #b85c38;
  --primary-dark: #8f4529;
  --secondary: #6b8e6e;
  --secondary-dark: #4f6e52;
  --text: #2e2a26;
  --muted: #7a6f66;
  --border: #e4d6c0;
  --white: #ffffff;
  --shadow: 0 2px 8px rgba(46, 42, 38, 0.08);
  --shadow-lg: 0 8px 24px rgba(46, 42, 38, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --container: 1140px;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { max-width: 100%; height: auto; display: block; }

a {
  color: var(--primary-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
a:hover { color: var(--primary); }

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  margin: 0 0 var(--space-md);
}
h1 { font-size: clamp(1.875rem, 1.4rem + 2vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 1.2rem + 1.2vw, 2rem); margin-top: var(--space-xl); }
h3 { font-size: clamp(1.125rem, 1rem + 0.6vw, 1.375rem); margin-top: var(--space-lg); }
p { margin: 0 0 var(--space-md); }

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--primary);
  color: var(--white);
  padding: var(--space-sm) var(--space-md);
  z-index: 100;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { top: 0; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Header & nav */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
  gap: var(--space-md);
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.logo svg { width: 36px; height: 36px; }
.logo span { color: var(--primary); }

.nav { display: none; }
.nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: var(--space-lg);
}
.nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-xs) 0;
  position: relative;
}
.nav a[aria-current="page"] { color: var(--primary); }
.nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.nav a:hover { color: var(--primary); }

/* Mobile nav via <details> - geen JS nodig */
details.mobile-nav { position: relative; }
details.mobile-nav summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--white);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 500;
}
details.mobile-nav summary::-webkit-details-marker { display: none; }
details.mobile-nav summary::after {
  content: "";
  width: 18px; height: 2px;
  background: var(--text);
  box-shadow: 0 -6px 0 var(--text), 0 6px 0 var(--text);
  transition: transform 0.2s ease;
}
details.mobile-nav[open] summary::after { transform: rotate(90deg); }
details.mobile-nav ul {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-sm);
  list-style: none;
  margin: 0;
  min-width: 220px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
details.mobile-nav a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--text);
  text-decoration: none;
  border-radius: var(--radius-sm);
}
details.mobile-nav a:hover,
details.mobile-nav a[aria-current="page"] {
  background: var(--surface);
  color: var(--primary);
}

@media (min-width: 720px) {
  .nav { display: block; }
  details.mobile-nav { display: none; }
}

/* Breadcrumbs */
.breadcrumbs {
  font-size: 0.9375rem;
  color: var(--muted);
  padding: var(--space-md) 0 0;
}
.breadcrumbs ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}
.breadcrumbs li + li::before {
  content: "/";
  padding-right: var(--space-xs);
  color: var(--border);
}
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--primary); }
.breadcrumbs [aria-current="page"] { color: var(--text); }

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
  padding: var(--space-2xl) 0;
  margin-bottom: var(--space-xl);
}
.hero-grid {
  display: grid;
  gap: var(--space-xl);
  align-items: center;
}
.hero p.lead {
  font-size: clamp(1.0625rem, 1rem + 0.4vw, 1.25rem);
  color: var(--muted);
  max-width: 56ch;
}
.hero-illustration {
  background: var(--white);
  border-radius: var(--radius);
  padding: var(--space-xl);
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 240px;
}
.hero-illustration svg { width: 100%; max-width: 320px; }

@media (min-width: 900px) {
  .hero-grid { grid-template-columns: 1.2fr 1fr; }
}

/* Sections */
main { padding-bottom: var(--space-2xl); }
.section { padding: var(--space-xl) 0; }
.section-title { margin-top: 0; }
.section-intro { max-width: 65ch; color: var(--muted); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.85rem 1.5rem;
  background: var(--primary);
  color: var(--white);
  border: 2px solid var(--primary);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.15s ease, transform 0.1s ease;
}
.btn:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: var(--white); }
.btn:active { transform: translateY(1px); }
.btn-secondary {
  background: transparent;
  color: var(--primary-dark);
}
.btn-secondary:hover { background: var(--primary); color: var(--white); }
.btn-group { display: flex; flex-wrap: wrap; gap: var(--space-md); margin-top: var(--space-md); }

/* Card grid (USPs, products) */
.grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}
@media (min-width: 620px) { .grid-2 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.card h3 { margin-top: 0; }
.card .icon {
  width: 48px; height: 48px;
  background: var(--surface);
  color: var(--primary);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

/* Feature list with check icons */
ul.check-list {
  list-style: none;
  padding: 0;
  margin: var(--space-md) 0;
  display: grid;
  gap: var(--space-sm);
}
ul.check-list li {
  padding-left: 1.75rem;
  position: relative;
}
ul.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 1.1rem;
  height: 1.1rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%236b8e6e'%3E%3Cpath d='M6.5 11.5L3 8l1.4-1.4L6.5 8.7l5.1-5.1L13 5z'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
}

/* Steps */
ol.steps {
  list-style: none;
  padding: 0;
  margin: var(--space-lg) 0;
  counter-reset: step;
  display: grid;
  gap: var(--space-md);
}
ol.steps li {
  counter-increment: step;
  padding: var(--space-md) var(--space-md) var(--space-md) 3.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: relative;
}
ol.steps li::before {
  content: counter(step);
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  width: 2rem; height: 2rem;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

/* CTA band */
.cta-band {
  background: var(--secondary);
  color: var(--white);
  padding: var(--space-xl) 0;
  margin: var(--space-2xl) 0 0;
  text-align: center;
}
.cta-band h2 { color: var(--white); margin-top: 0; }
.cta-band p { color: rgba(255,255,255,0.92); max-width: 56ch; margin-inline: auto; }
.cta-band .btn {
  background: var(--white);
  color: var(--secondary-dark);
  border-color: var(--white);
}
.cta-band .btn:hover { background: var(--surface); color: var(--secondary-dark); border-color: var(--surface); }

/* FAQ (native details) */
.faq { display: grid; gap: var(--space-sm); margin: var(--space-lg) 0; }
.faq details {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
}
.faq summary {
  cursor: pointer;
  padding: var(--space-md) var(--space-lg);
  font-weight: 600;
  list-style: none;
  position: relative;
  padding-right: 3rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: var(--space-lg);
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--primary);
  line-height: 1;
}
.faq details[open] summary::after { content: "−"; }
.faq details > *:not(summary) { padding: 0 var(--space-lg) var(--space-md); }

/* Form */
.form-wrapper {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-xl);
  box-shadow: var(--shadow);
}
.form-grid {
  display: grid;
  gap: var(--space-md);
  grid-template-columns: 1fr;
}
@media (min-width: 640px) {
  .form-grid { grid-template-columns: 1fr 1fr; }
  .form-grid .full { grid-column: 1 / -1; }
}
.form-field { display: flex; flex-direction: column; gap: 0.35rem; }
.form-field label {
  font-weight: 600;
  font-size: 0.9375rem;
}
.form-field .req { color: var(--primary); }
.form-field input,
.form-field select,
.form-field textarea {
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font: inherit;
  color: var(--text);
  background: var(--bg);
  width: 100%;
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--primary);
  background: var(--white);
  outline-offset: 0;
}
.checkbox-field {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-sm);
  align-items: start;
  font-size: 0.9375rem;
}
.checkbox-field input { width: 1.1rem; height: 1.1rem; margin-top: 0.25rem; }

#form-status {
  margin-top: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  min-height: 1.5rem;
}
#form-status.success { background: #e6efe7; color: var(--secondary-dark); }
#form-status.error { background: #f8e4dc; color: var(--primary-dark); }
#form-status.loading { background: var(--surface); color: var(--muted); }

/* Contact info block */
.contact-info {
  background: var(--surface);
  border-radius: var(--radius);
  padding: var(--space-lg);
}
.contact-info h3 { margin-top: 0; }
.contact-info a { color: var(--primary-dark); font-weight: 600; }

/* Footer */
.site-footer {
  background: var(--text);
  color: #d8d2cc;
  padding: var(--space-2xl) 0 var(--space-lg);
  margin-top: var(--space-2xl);
}
.site-footer a { color: var(--surface); }
.site-footer a:hover { color: var(--white); }
.footer-grid {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: 1fr;
}
@media (min-width: 720px) { .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; } }
.site-footer h4 { color: var(--white); margin-top: 0; font-size: 1rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.35rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  font-size: 0.875rem;
  color: #a8a199;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
}

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