:root {
    /* Color palette */
    --primary-dark: #1a237e;
    --primary-main: #283593;
    --primary-light: #3949ab;
    --secondary-dark: #00838f;
    --secondary-main: #00acc1;
    --accent-color: #ffab00;
    --light-bg: #f5f7fa;
    --dark-text: #212121;
    --light-text: #f5f5f5;
    --gray-text: #757575;
    --divider-color: #e0e0e0;

    /* Typography */
    --font-main: 'Montserrat', sans-serif;
    --font-heading: 'Playfair Display', serif;

    body {
        background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-main) 50%, var(--secondary-dark) 100%);
        background-size: 200% 200%;
        animation: gradientBG 15s ease infinite;
    }

    @keyframes gradientBG {
        0% {
            background-position: 0% 50%;
        }
        50% {
            background-position: 100% 50%;
        }
        100% {
            background-position: 0% 50%;
        }
    }

    /* Effects */
    --transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 1px 3px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1), 0 5px 10px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.15), 0 10px 10px rgba(0,0,0,0.05);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-xxl: 4rem;
}

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

body {
    font-family: var(--font-main);
    color: var(--dark-text);
    background-color: var(--light-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--space-xl);
}

.cards-container {
    display: flex;
    gap: var(--space-xl);
    max-width: 1200px;
    width: 100%;
    flex-wrap: wrap;
    justify-content: center;
}

.category-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
    position: relative;
    width: 100%;
    max-width: 500px;
    height: 600px;
    display: flex;
    flex-direction: column;
}

.category-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 30px 50px rgba(0,0,0,0.2);
}

.card-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--accent-color);
    color: var(--dark-text);
    padding: var(--space-xs) var(--space-md);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
    z-index: 2;
    box-shadow: var(--shadow-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card-image {
    height: 60%;
    overflow: hidden;
    position: relative;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.category-card:hover .card-image img {
    transform: scale(1.1);
}

.card-image::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 50%);
    opacity: 0.6;
    transition: var(--transition);
}

.category-card:hover .card-image::after {
    opacity: 0.8;
}

.card-content {
    padding: var(--space-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 1;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: var(--space-sm);
    line-height: 1.2;
}

.card-description {
    color: var(--gray-text);
    margin-bottom: var(--space-xl);
    font-size: 1.1rem;
    flex-grow: 1;
}

.card-stats {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 1rem;
    color: var(--gray-text);
}

.stat-item i {
    color: var(--accent-color);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-lg);
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-decoration: none;
}

.btn-card {
    background: var(--primary-main);
    color: white;
    width: 100%;
    justify-content: center;
    font-size: 1.1rem;
    padding: var(--space-md) var(--space-xl);
}

.btn-card:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(26, 35, 126, 0.3);
}

.btn-card i {
    transition: var(--transition);
}

.btn-card:hover i {
    transform: translateX(5px);
}

@media (max-width: 768px) {
    body {
        padding: var(--space-md);
    }

    .cards-container {
        gap: var(--space-lg);
    }

    .category-card {
        height: 500px;
    }

    .card-title {
        font-size: 1.7rem;
    }
}


.home-btn {
    position: fixed;
    top: var(--space-md);
    left: var(--space-md);
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-dark);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    z-index: 100;
    text-decoration: none;
}

.home-btn:hover {
    background: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}