:root {
  --primary: #e10600;
  --secondary: #1e1e1e;
  --accent: #ffcc00;
  --light: #f5f5f5;
  --dark: #15151e;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Roboto', Arial, sans-serif;
}

body {
  background: linear-gradient(135deg, var(--dark), var(--secondary));
  color: var(--light);
  line-height: 1.7;
}

/* Header */
header {
  background: rgba(30,30,30,0.85);
  backdrop-filter: blur(12px);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 2px solid var(--primary);
}

header h1 {
  color: var(--primary);
  font-size: 2rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav ul li a {
  color: var(--light);
  text-decoration: none;
  font-weight: bold;
  position: relative;
  transition: color 0.3s ease;
}

nav ul li a::after {
  content: '';
  position: absolute;
  width: 0%;
  height: 2px;
  background: var(--accent);
  left: 0;
  bottom: -5px;
  transition: width 0.3s ease;
}

nav ul li a:hover {
  color: var(--accent);
}

nav ul li a:hover::after {
  width: 100%;
}

/* Hero sectie */
.hero {
  height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-size: cover;
  background-position: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
}

.hero h2 {
  font-size: 3rem;
  color: var(--light);
  z-index: 1;
  animation: fadeInUp 1.5s ease;
  background: rgba(0,0,0,0.4);
  padding: 1rem 2rem;
  border-radius: 10px;
}

/* Animatie */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Content */
section {
  padding: 4rem 2rem;
}

section h2 {
  color: var(--primary);
  margin-bottom: 1rem;
  text-transform: uppercase;
  border-left: 5px solid var(--accent);
  padding-left: 0.5rem;
}

section p, section ul {
  max-width: 900px;
  margin-bottom: 1.5rem;
}

/* Cards */
.card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.card {
  background: rgba(30,30,30,0.7);
  backdrop-filter: blur(8px);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 20px rgba(0,0,0,0.5);
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 12px 25px rgba(0,0,0,0.7);
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.card h3 {
  padding: 1rem;
  color: var(--accent);
}

.card p {
  padding: 0 1rem 1.5rem;
}

/* Footer */
footer {
  background: rgba(30,30,30,0.9);
  color: var(--light);
  text-align: center;
  padding: 2rem;
  margin-top: 2rem;
  border-top: 2px solid var(--primary);
}
/* Sidebar styling */
.sidebar {
  position: fixed;
  top: 0;
  left: -250px;
  width: 250px;
  height: 100%;
  background-color: #111;
  padding-top: 60px;
  transition: 0.3s;
  z-index: 1000;
}

.sidebar a {
  display: block;
  color: #fff;
  padding: 16px;
  text-decoration: none;
  font-weight: bold;
}

.sidebar a:hover {
  background-color: #575757;
}

.sidebar.active {
  left: 0;
}

/* Menu knop */
.menu-btn {
  position: fixed;
  top: 20px;
  left: 20px;
  font-size: 24px;
  color: #111;
  background-color: #fff;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  z-index: 1100;
  border-radius: 5px;
}