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

body {
    font-family: 'Arial', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.header {
    text-align: center;
    padding: 2rem 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.header h1 {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.header p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.1rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.category-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.category-header {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.category-icon {
    font-size: 2.5rem;
    margin-right: 1rem;
}

.category-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: #333;
}

.category-description {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.items-list {
    list-style: none;
}

.item {
    padding: 0.8rem;
    margin-bottom: 0.5rem;
    background: rgba(103, 126, 234, 0.1);
    border-radius: 8px;
    border-left: 4px solid #667eea;
    transition: all 0.3s ease;
    cursor: pointer;
}

.item:hover {
    background: rgba(103, 126, 234, 0.2);
    transform: translateX(5px);
}

.item-title {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.3rem;
}

.item-description {
    font-size: 0.9rem;
    color: #666;
}

.footer {
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
    color: rgba(255, 255, 255, 0.7);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .container {
        padding: 1rem;
    }
    
    .categories {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .category-card {
        padding: 1.5rem;
    }
}