* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #f8fafc;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 4rem 2rem;
}

.header {
    text-align: center;
    margin-bottom: 4rem;
    animation: fadeInDown 1s ease-out;
}

.header h1 {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(to right, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.header p {
    font-size: 1.25rem;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
    animation: fadeInUp 1s ease-out;
}

.module-card {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 2rem;
    text-decoration: none;
    color: #f8fafc;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.module-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, #3b82f6, #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.4s ease;
    transform-origin: left;
}

.module-card:hover {
    transform: translateY(-10px) scale(1.02);
    background: rgba(30, 41, 59, 0.9);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5),
                0 0 20px rgba(59, 130, 246, 0.2);
}

.module-card:hover::before {
    transform: scaleX(1);
}

.icon-wrapper {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: #60a5fa;
    transition: all 0.3s ease;
}

.module-card:hover .icon-wrapper {
    background: #3b82f6;
    color: white;
    transform: rotate(5deg) scale(1.1);
}

.module-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.module-card p {
    font-size: 0.875rem;
    color: #94a3b8;
    line-height: 1.5;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2.5rem;
    }
    .grid-container {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}