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

body { font-family: 'Segoe UI', Arial, sans-serif; color: #333; }
body.dark-mode { background: #0f0f23; color: #ddd; }
body.dark-mode section { background: #0f0f23; }
body.dark-mode section:nth-child(even) { background: #13132e; }
body.dark-mode .card { background: #1a1a3e; color: #ddd; box-shadow: 0 2px 8px rgba(0,0,0,0.3); }
body.dark-mode .card p { color: #aaa; }

/* Grid */
.row { display: flex; flex-wrap: wrap; width: 100%; }
.col { flex: 1; padding: 1rem; }
.col-2 { flex: 0 0 50%; max-width: 50%; padding: 1rem; }
.col-3 { flex: 0 0 33.333%; max-width: 33.333%; padding: 1rem; }
.col-4 { flex: 0 0 25%; max-width: 25%; padding: 1rem; }

@media (max-width: 768px) {
  .col-2, .col-3, .col-4 { flex: 0 0 100%; max-width: 100%; }
}

/* Sections */
section { padding: 4rem 2rem; }
section:nth-child(even) { background: #f5f5f5; }
section h2 { text-align: center; font-size: 2rem; margin-bottom: 2rem; }

/* Cards */
.card {
  background: #fff;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
  opacity: 0;
  transform: translateY(20px);
}
.card.visible { opacity: 1; transform: translateY(0); transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.2s; }
.card:hover { transform: translateY(-4px); box-shadow: 0 6px 18px rgba(0,0,0,0.12); }
.card .icon { font-size: 2.5rem; margin-bottom: 0.75rem; }
.card h3 { margin-bottom: 0.5rem; }
.card p { color: #666; font-size: 0.9rem; }

/* Footer styles moved to footer.css */