/* Main Styles */
:root {
    --primary-color: #0066cc;
    --secondary-color: #6c757d;
    --accent-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --border-color: #dee2e6;
    --font-family: 'Inter', sans-serif;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--dark-color);
}

/* Header Styles */
.main-header {
    position: relative;
    z-index: 1000;
}

.top-bar {
    font-size: 0.875rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.social-links a {
    font-size: 0.875rem;
    transition: opacity 0.3s ease;
}

.social-links a:hover {
    opacity: 0.8;
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: -0.5px;
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.75rem 1rem;
    transition: color 0.3s ease;
    position: relative;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
}

.navbar-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background-color: var(--primary-color);
}

/* Card Styles */
.article-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-radius: 12px;
    overflow: hidden;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.article-card .card-img-top {
    transition: transform 0.3s ease;
}

.article-card:hover .card-img-top {
    transform: scale(1.05);
}

.featured-main {
    border-radius: 16px;
    overflow: hidden;
}

.featured-main .card-img-top {
    transition: transform 0.3s ease;
}

.featured-main:hover .card-img-top {
    transform: scale(1.02);
}

/* Badge Styles */
.badge {
    font-weight: 500;
    letter-spacing: 0.25px;
}

/* Button Styles */
.btn {
    font-weight: 500;
    border-radius: 8px;
    padding: 0.5rem 1.25rem;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
    transform: translateY(-1px);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

/* Article Detail Styles */
.article-detail .article-title {
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.article-detail .article-meta {
    font-size: 0.9rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.article-detail .article-body {
    font-size: 1.1rem;
    line-height: 1.8;
}

.article-detail .article-body h2,
.article-detail .article-body h3,
.article-detail .article-body h4 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.article-detail .article-body p {
    margin-bottom: 1.5rem;
}

.article-detail .article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
}

/* Social Share Styles */
.social-share .btn {
    font-size: 0.875rem;
    padding: 0.375rem 0.75rem;
}

/* Ad Space Styles */
.ad-space {
    background-color: var(--light-color);
    border: 1px solid var(--border-color);
    margin: 1rem 0;
}

/* Pagination Styles */
.pagination .page-link {
    color: var(--primary-color);
    border-color: var(--border-color);
    padding: 0.75rem 1rem;
}

.pagination .page-link:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.pagination .page-item.active .page-link {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Breadcrumb Styles */
.breadcrumb {
    background-color: transparent;
    padding: 0;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: ">";
    color: var(--secondary-color);
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    text-decoration: underline;
}

/* Category Filter Buttons */
.category-filter .btn {
    font-size: 0.875rem;
    margin-left: 0.25rem;
    padding: 0.375rem 0.75rem;
}

.category-filter .btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* Footer Styles */
footer {
    background-color: #1a1a1a !important;
}

footer .social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

footer .social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

/* Responsive Styles */
@media (max-width: 768px) {
    .display-5 {
        font-size: 2rem;
    }
    
    .display-6 {
        font-size: 1.75rem;
    }
    
    .article-detail .article-body {
        font-size: 1rem;
    }
    
    .featured-main .card-body {
        padding: 1.5rem;
    }
    
    .social-share {
        text-align: center;
    }
    
    .social-share .btn {
        margin-bottom: 0.5rem;
    }
    
    .category-filter {
        text-align: center;
        margin-top: 1rem;
    }
    
    .category-filter .btn {
        margin: 0.25rem;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-up {
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Loading Animations */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Print Styles */
@media print {
    .main-header,
    .ad-space,
    .social-share,
    footer,
    .related-articles {
        display: none !important;
    }
    
    .article-detail .article-body {
        font-size: 12pt;
        line-height: 1.6;
    }
}