.news-section {
    --primary-color: #0056b3;
    --primary-color-hover: #004494;
    --featured-color: #5dade2;
    --featured-color-hover: #3498db;
    --text-color-dark: #212529;
    --text-color-light: #6c757d;
    --border-color: #dee2e6;
    --background-color: #ffffff;
    --card-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    --card-shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.15);
    --card-border-radius: 16px;
    --font-family: 'Inter', 'Segoe UI', sans-serif;

    font-family: var(--font-family);
    background: #ffffff;
    padding: 0px 20px 40px 20px;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.page-header {
    margin: 15px 0 32px 0;
    padding: 25px 30px;
    text-align: center;
    background: #ffffff;
    border-radius: var(--card-border-radius);
    box-shadow: var(--card-shadow);
    position: relative;
    z-index: 1;
    border: 1px solid var(--border-color);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--featured-color), var(--primary-color), var(--featured-color));
    border-radius: var(--card-border-radius) var(--card-border-radius) 0 0;
}

.page-header h3 {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 28px;
    margin: 0 0 8px 0;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.page-header small {
    font-weight: 500;
    color: var(--text-color-light);
    font-size: 14px;
    display: block;
    margin-top: 5px;
    opacity: 0.8;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 32px;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(40px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.news-item {
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.news-item.featured {
    order: -1; /* Đưa các item nổi bật lên đầu */
}

.news-card {
    background: #ffffff;
    border-radius: var(--card-border-radius);
    box-shadow: var(--card-shadow);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
    position: relative;
    min-height: 520px;
    border: 1px solid var(--border-color);
    transform: translateY(0);
}

.news-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    pointer-events: none;
    z-index: 0;
}

.news-card > * {
    position: relative;
    z-index: 1;
}

.news-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary-color);
}

.news-card:hover::before {
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0.1) 100%);
}

.featured-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, var(--featured-color), var(--featured-color-hover));
    color: white;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 12px;
    font-weight: 700;
    z-index: 3;
    box-shadow: 0 4px 15px rgba(93, 173, 226, 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(93, 173, 226, 0.4);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 6px 20px rgba(93, 173, 226, 0.6);
    }
}

.featured-badge i {
    margin-right: 4px;
}

.img-container {
    width: 100%;
    height: 220px;
    overflow: hidden;
    flex-shrink: 0;
    border-top-left-radius: var(--card-border-radius);
    border-top-right-radius: var(--card-border-radius);
    position: relative;
}

.img-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.news-card:hover .img-container img {
    transform: scale(1.08);
}

.caption {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.news-source {
    font-size: 12px;
    font-weight: 700;
    color: var(--primary-color);
    text-transform: uppercase;
    margin-bottom: 10px;
    letter-spacing: 0.6px;
}

.caption h4 {
    margin: 0 0 12px 0;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-color-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    min-height: 50px;
}

.caption h4 a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-card:hover h4 a {
    color: var(--primary-color);
}

.news-description {
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-color-light);
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 15px;
    min-height: 63px;
}

.activity-meta {
    margin-bottom: 15px;
    padding: 12px 0;
    border-top: 1px solid #f0f0f0;
    border-bottom: 1px solid #f0f0f0;
}

.meta-item {
    display: flex;
    align-items: center;
    margin-bottom: 6px;
    font-size: 13px;
    color: var(--text-color-light);
}

.meta-item:last-child {
    margin-bottom: 0;
}

.meta-item i {
    width: 16px;
    margin-right: 8px;
    color: var(--primary-color);
    font-size: 12px;
}

.activity-stats {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    padding: 8px 0;
}

.stat-item {
    font-size: 12px;
    color: var(--text-color-light);
    display: flex;
    align-items: center;
}

.stat-item i {
    margin-right: 5px;
    color: var(--primary-color);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-color-hover));
    border: none;
    font-weight: 600;
    font-size: 14px;
    padding: 12px 24px;
    border-radius: 50px;
    margin-top: auto;
    align-self: flex-start;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    color: white;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 86, 179, 0.3);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-color-hover), var(--primary-color));
    box-shadow: 0 6px 20px rgba(0, 86, 179, 0.4);
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
}

.btn-primary::after {
    content: '→';
    transition: transform 0.3s ease;
}

.btn-primary:hover::after {
    transform: translateX(4px);
}

/* Featured items styling */
.news-item.featured .news-card {
    border: 2px solid var(--featured-color);
}

.news-item.featured .news-source {
    color: var(--featured-color);
}

.news-item.featured .btn-primary {
    background-color: var(--featured-color);
}

.news-item.featured .btn-primary:hover {
    background-color: var(--featured-color-hover);
}

/* Alert styles */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 8px;
    font-size: 14px;
}

.alert-warning {
    color: #856404;
    background-color: #fff3cd;
    border-color: #ffeaa7;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

/* Responsive design */
@media (max-width: 768px) {
    .news-section {
        padding: 0px 15px 25px 15px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .page-header {
        margin: 10px 0 24px 0;
        padding: 20px 20px;
    }
    
    .page-header h3 {
        font-size: 24px;
    }
    
    .page-header small {
        font-size: 13px;
        display: block;
        margin-top: 5px;
    }
    
    .news-card {
        min-height: 480px;
    }
    
    .activity-stats {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
    
    .featured-badge {
        top: 12px;
        right: 12px;
        padding: 6px 12px;
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .news-section {
        padding: 0px 10px 10px 10px;
    }
    
    .caption {
        padding: 15px;
    }
    
    .img-container {
        height: 180px;
    }
    
    .caption h4 {
        font-size: 16px;
    }
    
    .featured-badge {
        top: 10px;
        right: 10px;
        padding: 4px 8px;
        font-size: 11px;
    }
}