@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Exo+2:ital,wght@0,300;0,400;0,600;1,300&display=swap');

:root {
  --bg: #050810;
  --bg2: #080d1a;
  --bg3: #0d1525;
  --neon-blue: #00d4ff;
  --neon-purple: #9b5de5;
  --neon-pink: #f72585;
  --text: #c8d8f0;
  --text-dim: #6a7f9a;
  --border: rgba(0, 212, 255, 0.2);
  --glow: 0 0 20px rgba(0, 212, 255, 0.3);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Exo 2', sans-serif;
  font-weight: 300;
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(0, 212, 255, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 80%, rgba(155, 93, 229, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

/* NAV */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 8, 16, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-family: 'Orbitron', monospace;
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--neon-blue);
  text-decoration: none;
  letter-spacing: 2px;
  text-shadow: var(--glow);
}

.nav-links {
  display: flex;
  gap: 0.2rem;
  list-style: none;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  transition: all 0.2s;
  border: 1px solid transparent;
}

.nav-links a:hover,
.nav-links a.actief {
  color: var(--neon-blue);
  border-color: var(--border);
  background: rgba(0, 212, 255, 0.05);
  text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

/* HERO */
.hero {
  position: relative;
  z-index: 1;
  padding: 2rem 2rem 1rem;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--neon-blue);
  border: 1px solid var(--border);
  padding: 0.3rem 1rem;
  border-radius: 20px;
  margin-bottom: 1.5rem;
  background: rgba(0, 212, 255, 0.05);
}

.hero h1 {
  font-family: 'Orbitron', monospace;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 1.5rem;
  text-shadow: 0 0 40px rgba(0, 212, 255, 0.3);
}

.hero h1 span {
  background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.1rem;
  color: var(--text-dim);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* ARTIKEL */
.artikel-wrap {
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin: 0 auto;
  padding: 0 2rem 6rem;
}

.artikel-wrap h2 {
  font-family: 'Orbitron', monospace;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--neon-blue);
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  text-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.artikel-wrap p {
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
  color: var(--text);
}

.artikel-wrap strong {
  color: #fff;
  font-weight: 600;
}

/* AFBEELDING PLACEHOLDER */
.img-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--bg3);
  border: 1px dashed rgba(0, 212, 255, 0.3);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 2rem 0;
  color: var(--text-dim);
  font-size: 0.85rem;
  letter-spacing: 1px;
  gap: 0.5rem;
}

.img-placeholder .icon { font-size: 2rem; opacity: 0.4; }
.img-placeholder span { text-transform: uppercase; font-size: 0.7rem; letter-spacing: 2px; }


/* FULL WIDTH AFBEELDING */
.img-fullwidth {
  width: 100vw;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  display: block;
  margin: 2rem 0;
  max-height: 500px;
  object-fit: cover;
}

/* INDEX GRID */
.onderwerp-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 6rem;
  position: relative;
  z-index: 1;
}

.onderwerp-kaart {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  text-decoration: none;
  display: block;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.onderwerp-kaart::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}

.onderwerp-kaart:hover::before { transform: scaleX(1); }

.onderwerp-kaart:hover {
  border-color: rgba(0, 212, 255, 0.4);
  background: var(--bg3);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.1);
}

.kaart-icon { font-size: 2.5rem; margin-bottom: 1rem; }

.kaart-titel {
  font-family: 'Orbitron', monospace;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
  letter-spacing: 1px;
}

.kaart-tekst {
  font-size: 0.9rem;
  color: var(--text-dim);
  line-height: 1.6;
}

.kaart-link {
  display: inline-block;
  margin-top: 1.2rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--neon-blue);
}

/* FOOTER */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  letter-spacing: 1px;
}

footer span { color: var(--neon-blue); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero { padding: 3rem 1.5rem 2rem; }
  .artikel-wrap { padding: 0 1.5rem 4rem; }
}

/* ANIMATIES */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero, .artikel-wrap, .onderwerp-grid {
  animation: fadeUp 0.6s ease both;
}