@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  --color-blue: #4A90E2;
  --color-blue-dark: #0f172a;
  --color-blue-darker: #0b1120;
  --color-blue-card: #222B45;
  --color-copper: #D2945D;
  --color-copper-light: #e6b185;
  --color-white: #FAF8F1;
  --color-text-dark: #1a1a1a;
  --color-text-light: #FAF8F1;
  --color-gray: #888;
  
  --font-header: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  --transition-speed: 0.3s;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--color-white);
  color: var(--color-text-dark);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-header);
  font-weight: 600;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 5%;
  background-color: var(--color-white);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-blue-dark);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--color-copper);
  font-size: 1.5rem;
}

.logo-text {
  font-family: var(--font-header);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-blue-dark);
}

.hamburger {
  font-size: 1.5rem;
  color: var(--color-gray);
  cursor: pointer;
  transition: color var(--transition-speed);
}

.hamburger:hover {
  color: var(--color-copper);
}

/* Hero Section */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--color-blue-darker) 0%, var(--color-blue-dark) 100%);
  color: var(--color-text-light);
  overflow: hidden;
  padding: 8rem 5%;
  min-height: 500px;
  display: flex;
  align-items: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(circle at center, rgba(74, 144, 226, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-bg-img {
  position: absolute;
  top: 50%;
  right: 0%;
  transform: translateY(-50%);
  width: 600px;
  height: auto;
  opacity: 0.9;
  mix-blend-mode: screen;
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: 0.9rem;
  letter-spacing: 2px;
  color: rgba(250, 248, 241, 0.7);
  text-transform: uppercase;
  margin-bottom: 1rem;
  display: block;
}

.hero-title {
  font-size: 3.5rem;
  line-height: 1.2;
  font-weight: 600;
}

/* Main Content Grid */
.main-content {
  padding: 4rem 5%;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  max-width: 1400px;
  margin: 0 auto;
}

.section-title {
  font-size: 1.2rem;
  text-transform: uppercase;
  color: var(--color-text-dark);
  margin-bottom: 1.5rem;
  letter-spacing: 1px;
}

/* Categories (Populaire Onderwerpen) */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.category-card {
  background-color: var(--color-blue-card);
  border-radius: 12px;
  padding: 2rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  cursor: pointer;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.category-icon {
  font-size: 2.5rem;
  color: var(--color-copper);
}

.category-name {
  color: var(--color-white);
  font-family: var(--font-header);
  font-size: 1.1rem;
  font-weight: 500;
}

/* Spectrum Section */
.spectrum-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.spectrum-card {
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  aspect-ratio: 4/3;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.spectrum-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.spectrum-card:hover img {
  transform: scale(1.05);
}

/* Courses Sidebar (Cursussen van de maand) */
.courses-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.course-card {
  background: var(--color-white);
  border: 1px solid rgba(210, 148, 93, 0.3);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  box-shadow: 0 4px 15px rgba(0,0,0,0.03);
  cursor: pointer;
}

.course-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(210, 148, 93, 0.15);
}

.course-content {
  padding: 1.5rem;
  flex-grow: 1;
}

.course-title {
  font-family: var(--font-header);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-dark);
  text-transform: uppercase;
}

.course-footer {
  background: linear-gradient(90deg, var(--color-copper) 0%, var(--color-copper-light) 100%);
  padding: 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.course-action-btn {
  background: var(--color-blue-dark);
  color: var(--color-white);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-speed);
}

.course-card:hover .course-action-btn {
  transform: scale(1.1);
}

/* Footer */
footer {
  background-color: var(--color-blue-card);
  color: rgba(250, 248, 241, 0.7);
  padding: 1.5rem 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
}

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

.footer-links a {
  color: rgba(250, 248, 241, 0.7);
  text-decoration: none;
  transition: color var(--transition-speed);
}

.footer-links a:hover {
  color: var(--color-copper);
}

@media (max-width: 900px) {
  .main-content {
    grid-template-columns: 1fr;
  }
  
  .hero-bg-img {
    width: 400px;
    right: -10%;
    opacity: 0.5;
  }
}

@media (max-width: 600px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }
  
  .spectrum-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
}