/* ===== ARTICLES PAGE STYLES ===== */

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --border-radius: 16px;
    --border-radius-lg: 24px;
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-medium: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 20px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --text-primary: #2d3748;
    --text-secondary: #718096;
    --text-muted: #a0aec0;
    --bg-glass: rgba(255, 255, 255, 0.95);
}

/* ===== ARTICLES PAGE LAYOUT ===== */

.articles-page {
    min-height: 100vh;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

/* ===== HERO SECTION ===== */

.articles-hero {
    position: relative;
    background: var(--primary-gradient);
    color: white;
    padding: 4rem 0 3rem;
    overflow: hidden;
    margin-bottom: 2rem;
}

.articles-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
}

.hero-text {
    flex: 1;
    min-width: 300px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 1rem;
}

.category-badge,
.tag-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 1.2rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.search-term {
    display: block;
    font-size: 1.2rem;
    font-weight: 400;
    opacity: 0.9;
    margin-top: 0.5rem;
}

.hero-description {
    font-size: 1.2rem;
    opacity: 0.95;
    line-height: 1.6;
    margin: 0;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-primary-gradient {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: var(--transition);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-primary-gradient:hover {
    background: rgba(255, 255, 255, 0.3);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

/* Hero Floating Shapes */
.hero-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 20s ease-in-out infinite;
}

.shape-1 {
    width: 80px;
    height: 80px;
    top: 15%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: 7s;
}

.shape-3 {
    width: 60px;
    height: 60px;
    top: 30%;
    right: 30%;
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(90deg); }
    50% { transform: translateY(-40px) rotate(180deg); }
    75% { transform: translateY(-20px) rotate(270deg); }
}

/* ===== SEARCH & FILTERS SECTION ===== */

.search-filters-section {
    margin-bottom: 3rem;
}

.filter-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.search-container {
    margin-bottom: 2rem;
}

.search-form {
    display: flex;
    gap: 1rem;
    max-width: 600px;
    margin: 0 auto;
}

.search-wrapper {
    position: relative;
    flex: 1;
}

.search-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3.5rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    background: white;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.search-input:focus {
    border-color: #667eea;
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1), 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: #94a3b8;
    font-size: 1.1rem;
    pointer-events: none;
}

.search-btn {
    padding: 1rem 1.5rem;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-light);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
}

.search-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* Search Suggestions */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    z-index: 1000;
    max-height: 200px;
    overflow-y: auto;
    display: none;
    margin-top: 0.5rem;
}

/* Filter Controls */
.filter-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    white-space: nowrap;
}

.filter-label {
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    font-size: 0.95rem;
}

.filter-select {
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    background: white;
    font-size: 0.95rem;
    transition: var(--transition);
    min-width: 160px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.filter-select:focus {
    border-color: #667eea;
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.view-toggle {
    display: flex;
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.view-btn {
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    color: #64748b;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 50px;
}

.view-btn:hover {
    background: #f8fafc;
    color: #475569;
}

.view-btn.active {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

/* ===== ARTICLES GRID ===== */

.articles-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.articles-grid.grid-view {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
}

.articles-grid.list-view {
    grid-template-columns: 1fr;
}

/* ===== ARTICLE CARDS ===== */

.article-card {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-heavy);
}

.article-card-inner {
    padding: 1.5rem;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Grid View Styles */
.grid-view .article-card-inner {
    min-height: 300px;
}

/* List View Styles */
.list-view .article-card {
    margin-bottom: 1rem;
}

.list-view .article-card-inner {
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    min-height: auto;
    padding: 1.25rem 1.5rem;
}

.list-view .article-content {
    flex: 1;
}

.list-view .article-header {
    margin-bottom: 0.5rem;
}

.list-view .article-footer {
    margin-top: 0;
    flex-shrink: 0;
    min-width: 200px;
}

/* Article Header */
.article-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-tag {
    background: var(--primary-gradient);
    color: white;
    padding: 0.375rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.featured-badge {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #92400e;
    padding: 0.25rem 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
}

.reading-time {
    color: var(--text-muted);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

/* Article Content */
.article-content {
    flex: 1;
    margin-bottom: 1.5rem;
}

.article-title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.article-title a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

.article-title a:hover {
    color: #667eea;
}

.article-summary {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    font-size: 0.95rem;
}

/* Article Footer */
.article-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.author-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.author-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #e2e8f0;
}

.author-details {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.publish-date {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.article-stats {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.stat-item i {
    font-size: 0.9rem;
}

/* ===== LOAD MORE SECTION ===== */

.load-more-section {
    text-align: center;
    margin: 3rem 0;
}

.btn-load-more {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-light);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-load-more:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

/* ===== EMPTY STATE ===== */

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.empty-icon {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.empty-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.empty-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.empty-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
    padding: 0.875rem 1.75rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: white;
    color: var(--text-primary);
    border: 2px solid #e2e8f0;
}

.btn-secondary:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
    color: var(--text-primary);
    transform: translateY(-2px);
}

/* ===== RESPONSIVE DESIGN ===== */

@media (max-width: 992px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-content {
        text-align: center;
        flex-direction: column;
    }
    
    .filter-controls {
        justify-content: center;
        gap: 1rem;
    }
    
    .articles-grid.grid-view {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    .articles-hero {
        padding: 3rem 0 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .filter-card {
        padding: 1.5rem;
    }
    
    .search-form {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .filter-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .filter-group {
        justify-content: space-between;
    }
    
    .articles-grid.grid-view {
        grid-template-columns: 1fr;
    }
    
    .list-view .article-card-inner {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
    
    .list-view .article-footer {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .filter-card {
        padding: 1rem;
        margin: 0 0.5rem;
    }
    
    .article-card-inner {
        padding: 1rem;
    }
    
    .empty-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

/* ===== ANIMATIONS ===== */

.fade-in {
    animation: fadeInUp 0.4s ease-out;
}

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

/* ===== ACCESSIBILITY ===== */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .shape {
        animation: none;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}