/* styles.css */
:root {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --text-primary: #0c9408;
    --text-secondary: #423d3d;
    --accent-color: #05b12a;
    --card-bg: #2d2d2d;
    --hover-bg: #363636;
    --border-color: #404040;
    --spacing: 1rem;
    
    /* Category-specific colors */
    --html-color: #e34c26;
    --coding-color: #22ff52;
    --books-color: #8d3e9b;
    --cs-color: #e34c26;
    --css-color: #264de4;
    --js-color: #f0db4f;
    --react-color: #61dafb;
    --node-color: #68a063;
    --python-color: #3776ab;
    --design-color: #ff7eb6;
    --tools-color: #ff6b6b;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.categories-section {
    padding: 4rem 0;
    background-color: var(--bg-primary);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing);
}

h2 {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 3rem;
    font-size: 2.5rem;
    font-weight: 700;
    position: relative;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.category-card {
    background: #0b0b0b;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    text-decoration: none;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.03));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.category-card:hover::before {
    opacity: 1;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    background: var(--hover-bg);
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

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

.category-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #e34c26;
}

.post-count {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.categories-filter {
    max-width: 500px;
    margin: 0 auto 2rem;
}

#categorySearch {
    width: 100%;
    padding: 1rem 1.5rem;
    border-radius: 30px;
    border: 2px solid var(--border-color);
    background: var(--card-bg);
    color: var(--html-color);
    font-size: 1rem;
    transition: all 0.3s ease;
}

#categorySearch:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(114, 137, 218, 0.3);
}

#categorySearch::placeholder {
    color: var(--text-secondary);
}

/* Category-specific icon colors */
.category-html .category-icon { color: var(--html-color); }
.category-css .category-icon { color: var(--css-color); }
.category-javascript .category-icon { color: var(--js-color); }
.category-react .category-icon { color: var(--react-color); }
.category-node .category-icon { color: var(--node-color); }
.category-python .category-icon { color: var(--python-color); }
.category-design .category-icon { color: var(--design-color); }
.category-tools .category-icon { color: var(--tools-color); }

/* Animation for new categories */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.category-card {
    animation: fadeInUp 0.5s ease forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    .categories-section {
        padding: 2rem 0;
    }

    h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .categories-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .category-card {
        padding: 1.5rem;
    }

    .category-icon {
        font-size: 2rem;
    }

    .category-title {
        font-size: 1.1rem;
    }

    #categorySearch {
        padding: 0.875rem 1.25rem;
    }
}

/* Test-specific icon colors */
.category-test1 .category-icon { color: #ff6384; } /* Pink */
.category-test2 .category-icon { color: #36a2eb; } /* Blue */
.category-test3 .category-icon { color: #ffce56; } /* Yellow */
.category-test4 .category-icon { color: #4bc0c0; } /* Teal */
.category-test5 .category-icon { color: #9966ff; } /* Purple */
.category-test6 .category-icon { color: #ff9f40; } /* Orange */