/* ============================================================
   AI GESCHIEDENIS — Nederlandse site over de geschiedenis van AI
   Design: Modern Clarity — Navy + Teal + Warm White
   Fonts: Plus Jakarta Sans (headings) + Inter (body)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Plus+Jakarta+Sans:wght@500;600;700;800&display=swap');

:root {
  --navy: #0a1e3f;
  --navy-light: #142a4f;
  --teal: #0d9488;
  --teal-light: #14b8a6;
  --teal-dark: #0f766e;
  --warm-white: #f8f6f1;
  --cream: #f5f0e8;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --white: #ffffff;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  --transition: 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 18px;
  line-height: 1.7;
  color: var(--gray-800);
  background: var(--warm-white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  line-height: 1.25;
  color: var(--navy);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.5rem); }
h3 { font-size: 1.3rem; }

a { color: var(--teal-dark); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--teal); }

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

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) { .container { padding: 0 1.5rem; } }
@media (min-width: 1024px) { .container { padding: 0 2rem; } }

/* === HEADER === */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(248, 246, 241, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(10, 30, 63, 0.08);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
  background: rgba(248, 246, 241, 0.95);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.logo-text {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--navy);
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 2rem;
}

@media (min-width: 768px) { .nav-desktop { display: flex; } }

.nav-desktop a {
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.nav-desktop a:hover { color: var(--navy); }

.nav-cta {
  background: var(--navy);
  color: var(--white) !important;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: background var(--transition), transform var(--transition);
}

.nav-cta:hover { background: var(--navy-light); transform: scale(0.97); }

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

@media (min-width: 768px) { .menu-toggle { display: none; } }

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--navy);
  transition: var(--transition);
}

.nav-mobile {
  display: none;
  position: fixed;
  top: 72px; left: 0; right: 0;
  background: var(--warm-white);
  border-bottom: 1px solid var(--gray-200);
  padding: 1rem;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 99;
}

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

.nav-mobile a {
  padding: 0.75rem 1rem;
  color: var(--gray-700);
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.nav-mobile a:hover { background: var(--gray-100); }

/* === HERO === */
.hero {
  padding: 8rem 0 4rem;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%; right: -20%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(13, 148, 136, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .hero-grid { grid-template-columns: 1.1fr 0.9fr; gap: 4rem; }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(13, 148, 136, 0.2);
  border: 1px solid rgba(13, 148, 136, 0.3);
  color: var(--teal-light);
  padding: 0.5rem 1rem;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero h1 { color: var(--white); margin-bottom: 1.5rem; }

.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
  max-width: 540px;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--teal);
  color: var(--white);
  padding: 0.875rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.btn-primary:hover { background: var(--teal-dark); transform: scale(0.97); }

.btn-secondary {
  background: transparent;
  color: var(--white);
  padding: 0.875rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.btn-secondary:hover { background: rgba(255, 255, 255, 0.1); transform: scale(0.97); }

.hero-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-num {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  color: var(--teal-light);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

/* === SECTIONS === */
.section { padding: 5rem 0; }

.section-tag {
  display: inline-block;
  color: var(--teal-dark);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.section-title { margin-bottom: 1rem; }

.section-subtitle {
  font-size: 1.1rem;
  color: var(--gray-600);
  max-width: 640px;
  margin-bottom: 3rem;
}

/* === TIMELINE === */
.timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

@media (min-width: 768px) {
  .timeline { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .timeline { grid-template-columns: repeat(3, 1fr); }
}

.timeline-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: transform var(--transition), box-shadow var(--transition);
}

.timeline-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.timeline-year {
  display: inline-block;
  background: var(--navy);
  color: var(--white);
  padding: 0.375rem 1rem;
  border-radius: 100px;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.timeline-card h3 { margin-bottom: 0.75rem; }

.timeline-card p { color: var(--gray-600); font-size: 0.95rem; }

/* === CARDS GRID === */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) { .cards-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .cards-grid { grid-template-columns: repeat(3, 1fr); } }

.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-card img {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.feature-card h3 { margin-bottom: 0.75rem; }

.feature-card p { color: var(--gray-600); font-size: 0.95rem; }

/* === ADVANTAGES (dark section) === */
.advantages {
  background: var(--navy);
  color: var(--white);
  padding: 5rem 0;
}

.advantages h2 { color: var(--white); }

.advantages .section-subtitle { color: rgba(255, 255, 255, 0.7); }

.adv-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) { .adv-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .adv-grid { grid-template-columns: repeat(4, 1fr); } }

.adv-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 2rem;
  transition: background var(--transition), transform var(--transition);
}

.adv-card:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-4px);
}

.adv-icon {
  width: 48px;
  height: 48px;
  background: rgba(13, 148, 136, 0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--teal-light);
}

.adv-card h3 { color: var(--white); margin-bottom: 0.75rem; font-size: 1.15rem; }

.adv-card p { color: rgba(255, 255, 255, 0.65); font-size: 0.95rem; }

/* === HOW IT WORKS === */
.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 3rem;
}

@media (min-width: 768px) { .steps { grid-template-columns: repeat(3, 1fr); } }

.step-card {
  text-align: center;
  padding: 2rem;
  position: relative;
}

.step-num {
  width: 56px;
  height: 56px;
  background: var(--navy);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  margin: 0 auto 1.5rem;
}

.step-card h3 { margin-bottom: 0.75rem; }

.step-card p { color: var(--gray-600); font-size: 0.95rem; }

/* === CONTACT === */
.contact {
  background: var(--cream);
  padding: 5rem 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}

@media (min-width: 768px) { .contact-grid { grid-template-columns: 0.9fr 1.1fr; } }

.contact-info-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  align-items: flex-start;
}

.contact-info-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--white);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal-dark);
  box-shadow: var(--shadow-sm);
}

.contact-info-item h3 { font-size: 1.05rem; margin-bottom: 0.25rem; }

.contact-info-item p { color: var(--gray-600); font-size: 0.9rem; }

.contact-details {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-200);
}

@media (min-width: 480px) { .contact-details { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px) { .contact-details { grid-template-columns: repeat(3, 1fr); } }

.contact-details .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.contact-details .value {
  font-weight: 600;
  color: var(--gray-800);
  font-size: 0.95rem;
}

/* === FORM === */
.form-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 480px) { .form-row { grid-template-columns: 1fr 1fr; } }

.form-group { margin-bottom: 1.25rem; }

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--gray-50);
}

.form-input:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
  background: var(--white);
}

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

.form-consent {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  margin-bottom: 1.5rem;
}

.form-consent input { margin-top: 4px; }

.form-consent label { font-size: 0.85rem; color: var(--gray-600); }

.form-consent a { color: var(--teal-dark); text-decoration: underline; }

.form-submit {
  width: 100%;
  background: var(--navy);
  color: var(--white);
  padding: 1rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.form-submit:hover { background: var(--navy-light); transform: scale(0.98); }

/* === TOAST === */
.form-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--gray-900);
  color: var(--white);
  padding: 1rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: var(--shadow-lg);
  z-index: 200;
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1), opacity 0.3s;
  max-width: 90vw;
}

.form-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.form-toast.success { background: var(--teal-dark); }
.form-toast.error { background: #dc2626; }

/* === FOOTER === */
.site-footer {
  background: var(--navy);
  color: var(--white);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

@media (min-width: 768px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr; } }

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 1rem;
}

.footer-brand-name {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--white);
}

.footer-text {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  max-width: 320px;
}

.footer-grid h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-grid ul { list-style: none; }

.footer-grid li { margin-bottom: 0.5rem; }

.footer-grid a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-grid a:hover { color: var(--teal-light); }

.footer-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 2rem;
}

@media (min-width: 480px) { .footer-contact { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 768px) { .footer-contact { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .footer-contact { grid-template-columns: repeat(4, 1fr); } }

.footer-contact .label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.4);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.footer-contact .value {
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  font-size: 0.9rem;
}

.footer-contact a.value { color: var(--teal-light); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
}

.footer-gdpr {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.85rem;
}

/* === COOKIE BANNER === */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--navy);
  color: var(--white);
  padding: 1.5rem;
  z-index: 200;
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.cookie-banner.show { transform: translateY(0); }

.cookie-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  text-align: center;
}

@media (min-width: 768px) {
  .cookie-inner { flex-direction: row; justify-content: space-between; text-align: left; }
}

.cookie-text {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
}

.cookie-text a { color: var(--teal-light); text-decoration: underline; }

.cookie-buttons { display: flex; gap: 0.75rem; flex-shrink: 0; }

.cookie-btn {
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.cookie-btn:hover { transform: scale(0.97); }

.cookie-btn-accept { background: var(--teal); color: var(--white); }
.cookie-btn-accept:hover { background: var(--teal-dark); }

.cookie-btn-reject { background: transparent; color: var(--white); border: 1px solid rgba(255, 255, 255, 0.3); }
.cookie-btn-reject:hover { background: rgba(255, 255, 255, 0.1); }

/* === LEGAL PAGES === */
.legal-header {
  background: var(--navy);
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 50;
}

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

.legal-header .logo-text { color: var(--white); }

.legal-header a.logo:hover { opacity: 0.85; }

.legal-main {
  padding: 4rem 0;
  background: var(--warm-white);
  min-height: calc(100vh - 200px);
}

.legal-content {
  max-width: 800px;
  margin: 0 auto;
  background: var(--white);
  padding: 3rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

@media (max-width: 640px) { .legal-content { padding: 2rem 1.5rem; } }

.legal-content h1 { margin-bottom: 0.5rem; }

.legal-updated {
  color: var(--gray-500);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.legal-content h2 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.legal-content p { margin-bottom: 1rem; color: var(--gray-700); }

.legal-content ul { margin-left: 1.5rem; margin-bottom: 1rem; }

.legal-content li { margin-bottom: 0.5rem; color: var(--gray-700); }

.legal-content a { color: var(--teal-dark); text-decoration: underline; }

.legal-footer {
  background: var(--navy);
  color: var(--white);
  padding: 2rem 0;
}

.legal-footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.legal-footer p { color: rgba(255, 255, 255, 0.5); font-size: 0.85rem; }

.legal-footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; }

.legal-footer-links a { color: rgba(255, 255, 255, 0.6); font-size: 0.85rem; }
.legal-footer-links a:hover { color: var(--teal-light); }

/* === ANIMATIONS === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.23, 1, 0.32, 1), transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
}

/* === MOBILE === */
@media (max-width: 480px) {
  body { font-size: 16px; }
  .hero { padding: 6rem 0 3rem; }
  .section { padding: 3rem 0; }
  .hero-stats { gap: 1.5rem; }
  .hero-stat-num { font-size: 1.5rem; }
}