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

:root {
    --primary-color: #1f3a7f;
    --secondary-color: #0056b3;
    --accent-color: #ffc107;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --border-color: #dee2e6;
    --success-color: #28a745;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: #fff;
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo h1 {
    font-size: 28px;
    margin: 15px 0;
}

.logo h1 a {
    color: white;
}

.logo h1 a:hover {
    color: var(--accent-color);
}

/* Navigation */
.main-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
    margin: 0;
    padding: 0;
    flex-wrap: wrap;
}

.main-nav a {
    color: white;
    font-weight: 500;
    padding: 10px 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
}

.main-nav a:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none !important;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--secondary-color);
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    list-style: none;
    min-width: 200px;
    padding: 10px 0;
    z-index: 1000;
    margin-top: 5px;
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    color: white;
    border-bottom: none;
    white-space: nowrap;
}

.dropdown-menu a:hover {
    background-color: var(--primary-color);
    color: var(--accent-color);
}

.dropdown:hover .dropdown-menu {
    display: block !important;
}

/* Main Content */
main {
    min-height: calc(100vh - 200px);
    padding: 40px 0;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 8px;
    margin-bottom: 40px;
}

.hero h2 {
    font-size: 32px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto;
}

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.category-card {
    background-color: var(--light-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    text-align: left;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 12px;
    color: inherit;
    min-height: 210px;
}

.category-card:hover {
    background-color: white;
    border-color: var(--secondary-color);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.category-card__header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
}

.category-card h4 {
    margin: 0;
    font-size: 18px;
    color: var(--secondary-color);
}

.category-card__count {
    font-size: 12px;
    color: #666;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    padding: 4px 10px;
}

.category-preview {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 6px;
    color: #444;
    font-size: 14px;
}

.category-preview li::before {
    content: "• ";
    color: var(--accent-color);
    font-weight: 700;
}

.category-empty {
    color: #888;
    font-size: 14px;
}

.category-card__cta {
    margin-top: auto;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 14px;
}

/* Category Page */
.category-page {
    background-color: var(--light-bg);
    border-radius: 8px;
    padding: 40px;
    margin-bottom: 40px;
}

.category-page h2 {
    color: var(--primary-color);
    margin-bottom: 10px;
    border-bottom: 3px solid var(--accent-color);
    padding-bottom: 10px;
    display: inline-block;
}

.category-description {
    margin-top: 15px;
    color: #555;
    font-style: italic;
}

/* Links List */
.links-list ul {
    list-style: none;
    margin-top: 30px;
}

.links-list li {
    padding: 15px;
    margin-bottom: 10px;
    background-color: white;
    border-left: 4px solid var(--secondary-color);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.links-list li:hover {
    background-color: var(--light-bg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-left-color: var(--accent-color);
}

.links-list a {
    font-weight: 600;
    color: var(--secondary-color);
    font-size: 16px;
}

.links-list a:hover {
    color: var(--primary-color);
}

.link-description {
    margin-top: 8px;
    color: #666;
    font-size: 14px;
}

.link-description-inline {
    color: #666;
    font-size: 14px;
}

/* About Page */
.about-content {
    background-color: var(--light-bg);
    border-radius: 8px;
    padding: 40px;
}

.about-content h2 {
    color: var(--primary-color);
    margin-bottom: 30px;
    border-bottom: 3px solid var(--accent-color);
    padding-bottom: 15px;
}

.about-info,
.about-description {
    margin-bottom: 30px;
    background-color: white;
    padding: 25px;
    border-radius: 6px;
    border-left: 4px solid var(--secondary-color);
}

.about-content h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.about-info p {
    margin-bottom: 10px;
    line-height: 1.8;
}

.about-description p {
    text-align: justify;
}

.no-content {
    padding: 20px;
    text-align: center;
    color: #999;
    font-size: 18px;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 30px 20px;
    margin-top: 60px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

footer p {
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 15px;
    }

    .main-nav ul {
        gap: 15px;
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero h2 {
        font-size: 24px;
    }

    .hero p {
        font-size: 16px;
    }

    .category-grid {
        grid-template-columns: 1fr;
    }

    .category-page,
    .about-content {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 20px;
    }

    .main-nav ul {
        gap: 10px;
    }

    .main-nav a {
        padding: 8px 5px;
    }

    .hero {
        padding: 30px 15px;
    }

    .hero h2 {
        font-size: 20px;
    }

    .hero p {
        font-size: 14px;
    }

    .category-page,
    .about-content {
        padding: 15px;
    }
}