body {
    background: linear-gradient(135deg, #f5f5f5 0%, #e8e8e8 100%);
    color: #374151;
}

header h1 {
    color: #111827;
}

.subtitle {
    color: #9ca3af;
}

footer {
    color: #9ca3af;
}

/* --- MODULES GRID --- */
.modules-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

@media (max-width: 700px) {
    .modules-grid {
        grid-template-columns: 1fr;
    }
}

.module-card {
    display: block;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 16px;
    padding: 40px 30px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    text-decoration: none;
    color: #374151;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.module-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 35px -5px rgba(0, 0, 0, 0.08), 0 15px 15px -5px rgba(0, 0, 0, 0.04);
}

.module-card h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: #111827;
}

.module-card p {
    font-size: 0.95rem;
    color: #6b7280;
    line-height: 1.6;
}