/* Base styles */
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: #0d1117;
  color: #ffffff;
  margin: 0;
  min-height: 100vh;
  line-height: 1.6;
  background: linear-gradient(135deg, #0d1117 0%, #1a1c2e 100%);
}

/* Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  text-align: center;
  padding: 2rem 1rem;
  position: relative;
  margin-bottom: 1.5rem;
}

h1 {
  font-size: 2.25rem;
  color: #fff;
  margin: 0;
  letter-spacing: -0.5px;
}

.subtitle {
  color: #F7A8B8;
  font-size: 0.95rem;
  margin-top: 0.5rem;
  opacity: 0.9;
}

/* Main content */
main {
  flex: 1;
  display: grid;
  gap: 1.5rem;
  padding: 0.5rem;
}

.category {
  background: rgba(16,18,31,0.6);
  border-radius: 12px;
  padding: 1.25rem;
  border: 1px solid rgba(85, 205, 252, 0.15);
}

h2 {
  color: #55CDFC;
  font-size: 1.15rem;
  margin: 0 0 0.25rem 0;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.category-desc {
  color: #F7A8B8;
  font-size: 0.85rem;
  margin: 0 0 1rem 0;
  opacity: 0.8;
}

/* Card grid */
.card-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 0.75rem;
}

.card {
  background: rgba(13,14,25,0.8);
  border-radius: 8px;
  padding: 0.75rem;
  text-align: center;
  border: 1px solid rgba(85, 205, 252, 0.15);
  transition: background-color 0.2s ease;
}

.card:hover {
  background: rgba(16,18,31,0.9);
}

/* Links */
a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  display: block;
  padding: 0.25rem;
  cursor: pointer;
  transition: color 0.2s ease;
}

a:hover {
  color: #55CDFC;
}

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem 1rem;
  color: #F7A8B8;
  font-size: 0.85rem;
  opacity: 0.8;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .container {
    padding: 0.75rem;
  }
  
  header {
    padding: 1.5rem 1rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .category {
    padding: 1rem;
  }
  
  .card-list {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 0.6rem;
  }
}

@media (max-width: 480px) {
  .card-list {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 0.5rem;
  }
  
  .card {
    padding: 0.6rem;
  }
  
  a {
    font-size: 0.9rem;
  }
}