/* =========================================
   BLOG LISTING PAGE STYLES
   File: assets/css/blog.css
   ========================================= */

/* --- 1. Blog Hero Section --- */
.blog-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 100px;
    padding-bottom: var(--space-16);
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--secondary-50) 100%);
    text-align: center;
}

.blog-hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 var(--space-4);
}

.blog-hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-6);
    background: linear-gradient(135deg, var(--primary-700), var(--primary-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.blog-hero-description {
    font-size: var(--font-size-lg);
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--space-8);
}

/* --- 2. Search Box --- */
.search-container {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-input {
    width: 100%;
    padding: 18px 24px;
    padding-right: 70px;
    border: 2px solid var(--gray-200);
    border-radius: 50px;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 4px 25px rgba(59, 130, 246, 0.15);
}

.search-btn {
    position: absolute;
    right: 6px;
    top: 6px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: var(--primary-600);
    color: white;
    cursor: pointer;
    transition: transform 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.search-btn:hover {
    background: var(--primary-700);
    transform: scale(1.05);
}

/* --- 3. Categories --- */
.blog-categories {
    padding: var(--space-8) 0;
    background: #fff;
    border-bottom: 1px solid var(--gray-100);
    position: sticky;
    top: 80px; /* Adjust based on navbar height */
    z-index: 10;
}

.category-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.category-tab {
    padding: 10px 20px;
    border-radius: 50px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    color: var(--gray-600);
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.category-tab:hover {
    background: white;
    border-color: var(--primary-200);
    color: var(--primary-600);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.category-tab.active {
    background: var(--primary-600);
    border-color: var(--primary-600);
    color: white;
    box-shadow: var(--shadow-md);
}

/* --- 4. Articles Grid --- */
.featured-articles, .recent-articles {
    padding: var(--space-16) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-8);
}

/* --- 5. Article Card Design --- */
.article-card {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--primary-100);
}

.article-image {
    height: 220px;
    overflow: hidden;
    position: relative;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.article-category-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: rgba(255, 255, 255, 0.95);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-700);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.article-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.article-meta {
    display: flex;
    gap: 15px;
    font-size: 13px;
    color: var(--gray-500);
    margin-bottom: 12px;
}

.article-meta i {
    color: var(--primary-500);
    margin-right: 5px;
}

.article-title a {
    color: var(--gray-900);
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    line-height: 1.4;
    transition: color 0.2s;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-title a:hover {
    color: var(--primary-600);
}

.article-excerpt {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.6;
    margin: 12px 0 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.read-more-link {
    margin-top: auto;
    color: var(--primary-600);
    font-weight: 600;
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.read-more-link:hover {
    gap: 8px;
}

/* --- 6. Newsletter Section --- */
.newsletter-signup {
    background: linear-gradient(135deg, var(--primary-900), var(--primary-700));
    padding: 80px 0;
    color: white;
    text-align: center;
    border-radius: 20px;
    margin: 40px 0;
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-form {
    display: flex;
    gap: 10px;
    margin-top: 30px;
}

.newsletter-form input {
    flex: 1;
    padding: 15px 20px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    color: white;
}

.newsletter-form input::placeholder {
    color: rgba(255,255,255,0.7);
}

.newsletter-form button {
    padding: 15px 30px;
    background: white;
    color: var(--primary-900);
    font-weight: 700;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

/* --- 7. Search Results & Animation --- */
.search-results {
    padding: 20px 0;
    background: var(--gray-50);
    text-align: center;
    display: none; /* Hidden by default */
}

.article-card.hidden {
    display: none;
}

.loading-spinner {
    border: 3px solid rgba(0,0,0,0.1);
    border-top: 3px solid var(--primary-600);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
    display: inline-block;
}

@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* --- Responsive --- */
@media (max-width: 768px) {
    .blog-hero-title { font-size: 2.5rem; }
    .articles-grid { grid-template-columns: 1fr; }
    .newsletter-form { flex-direction: column; }
    .category-tabs { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; padding-bottom: 10px; }
    .category-tab { flex-shrink: 0; }
}