/* ========== HERO SECTION (precision design: solid ink, zero animations) ========== */
.hero-section {
    position: relative;
    background: var(--text-primary);
    padding: 3.5rem 2rem;
    margin-bottom: 2rem;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
}

.hero-title {
    font-family: var(--font-secondary);
    font-size: 3rem;
    font-weight: 700;
    color: white;
    margin-bottom: 1rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.95);
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-bottom: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.9);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-search-container {
    max-width: 600px;
    margin: 0 auto;
}

.hero-search {
    position: relative;
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-md);
    padding: 0.35rem;
    display: flex;
    align-items: center;
}

.hero-search input {
    flex: 1;
    min-width: 0;
    border: none;
    padding: 0.8rem 1rem;
    font-size: 1rem;
    outline: none;
    background: transparent;
    color: var(--text-primary);
    font-family: inherit;
}

.hero-search button {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border-radius: var(--radius-md);
    border: none;
    background: var(--accent-green);
    color: #fff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease;
}

.hero-search button:hover {
    background: #0B6238;
}

/* ========== LAYOUT ========== */
.main-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
}

/* ========== FEATURED ARTICLE ========== */
.featured-article-wrapper {
    background: var(--primary-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--medium-gray);
    overflow: hidden;
    margin-bottom: 2rem;
}

.featured-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--accent-green);
    color: #fff;
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.featured-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 0;
}

@media (max-width: 768px) {
    .featured-content {
        grid-template-columns: 1fr;
    }
}

.featured-image {
    background: var(--accent-green);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.featured-details {
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.featured-category {
    background: var(--text-primary);
    color: var(--paper);
    padding: 0.3rem 0.7rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-block;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.featured-title {
    font-family: var(--font-secondary);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.featured-title a {
    text-decoration: none;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.featured-title a:hover {
    color: var(--accent-blue);
}

.featured-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.featured-meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.featured-meta span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.featured-actions {
    display: flex;
    gap: 0.75rem;
}

.featured-btn {
    flex: 1;
    padding: 0.7rem 1.25rem;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.featured-btn-primary {
    background: var(--text-primary);
    color: var(--paper);
}

.featured-btn-primary:hover {
    background: var(--accent-green);
    color: #fff;
}

.featured-btn-secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--medium-gray);
}

.featured-btn-secondary:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

/* ========== SIDEBAR ========== */
.sidebar {
    position: sticky;
    top: 2rem;
    align-self: start;
}

.sidebar-section {
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.5rem;
}

.sidebar-title {
    font-family: var(--font-secondary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-title i {
    color: var(--accent-blue);
}

.category-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.category-list li {
    margin-bottom: 0.5rem;
}

.category-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.8rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.category-link:hover, .category-link.active {
    background: var(--accent-blue-light);
    color: var(--accent-blue);
}

.category-count {
    background: var(--medium-gray);
    color: var(--text-muted);
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag-pill {
    background: var(--light-gray);
    color: var(--text-secondary);
    border: 1px solid var(--medium-gray);
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    font-size: 0.8rem;
    text-decoration: none;
    transition: border-color 0.15s ease, color 0.15s ease;
    cursor: pointer;
}

.tag-pill:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.popular-articles-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.popular-article-item {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--medium-gray);
}

.popular-article-item:last-child {
    border-bottom: none;
}

.popular-article-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.4;
    transition: color 0.3s ease;
}

.popular-article-link:hover {
    color: var(--accent-blue);
}

.popular-article-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
    display: flex;
    gap: 1rem;
}

/* ========== FILTERS & SORT ========== */
.filters-section {
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.quick-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.quick-filter-btn {
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    padding: 0.45rem 0.9rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.quick-filter-btn:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.quick-filter-btn.active {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--paper);
}

.sort-dropdown {
    position: relative;
}

.sort-btn {
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    padding: 0.5rem 2rem 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: border-color 0.15s ease, color 0.15s ease;
}

.sort-btn:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.sort-btn i {
    font-size: 0.8rem;
}

.sort-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-md);
    margin-top: 0.5rem;
    min-width: 180px;
    z-index: 100;
    display: none;
    box-shadow: var(--shadow-md);
}

.sort-menu.show {
    display: block;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.sort-option {
    padding: 0.75rem 1rem;
    cursor: pointer;
    transition: background 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-option:hover {
    background: var(--light-gray);
}

.sort-option.active {
    background: var(--light-gray);
    color: var(--text-primary);
    font-weight: 600;
}

/* ========== ARTICLE CARDS ========== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .articles-grid {
        grid-template-columns: 1fr;
    }
}

.article-card {
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color 0.15s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.article-card:hover {
    border-color: var(--dark-gray);
}

.article-thumbnail {
    height: 180px;
    background: var(--light-gray);
    border-bottom: 1px solid var(--medium-gray);
    position: relative;
    overflow: hidden;
}

.article-thumbnail-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    font-size: 3rem;
    color: var(--dark-gray);
    opacity: 0.5;
}

.article-views-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-variant-numeric: tabular-nums;
}

.article-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.article-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.article-tag {
    background: var(--accent-blue-light);
    color: var(--accent-blue);
    padding: 0.25rem 0.6rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
}

.article-category {
    background: var(--accent-green-light);
    color: var(--accent-green);
    padding: 0.25rem 0.6rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
}

.article-title {
    font-family: var(--font-secondary);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.article-title a {
    text-decoration: none;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.article-title a:hover {
    color: var(--accent-blue);
}

.article-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.article-progress {
    height: 3px;
    background: var(--medium-gray);
    border-radius: 2px;
    margin-bottom: 1rem;
    overflow: hidden;
}

.article-progress-bar {
    height: 100%;
    background: var(--accent-green);
    border-radius: 2px;
    width: 0%;
    transition: width 0.5s ease;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: auto;
}

.article-meta-left {
    display: flex;
    gap: 1rem;
}

.article-meta-left span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.read-more-btn {
    color: var(--accent-green);
    font-weight: 600;
    text-decoration: none;
}

.read-more-btn:hover {
    text-decoration: underline;
}

.read-more-btn i {
    transition: transform 0.15s ease;
}

.read-more-btn:hover i {
    transform: translateX(3px);
}

/* ========== PAGINATION ========== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 2rem 0;
}

.pagination-btn {
    width: 42px;
    height: 42px;
    border: 1px solid var(--medium-gray);
    background: var(--primary-white);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-variant-numeric: tabular-nums;
}

.pagination-btn:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.pagination-btn.active {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--paper);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========== TOAST NOTIFICATIONS ========== */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
}

.toast {
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-md);
    padding: 0.85rem 1.25rem;
    margin-top: 0.5rem;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
    max-width: 350px;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.toast i {
    font-size: 1.25rem;
}

.toast-success i {
    color: var(--accent-green);
}

.toast-info i {
    color: var(--accent-blue);
}

/* ========== SKELETON LOADING ========== */
.skeleton {
    background: linear-gradient(90deg, var(--light-gray) 25%, var(--medium-gray) 50%, var(--light-gray) 75%);
    background-size: 200% 100%;
    animation: skeletonLoading 1.5s infinite;
}

@keyframes skeletonLoading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-card {
    background: var(--primary-white);
    border: 1px solid var(--medium-gray);
    border-radius: var(--radius-lg);
    overflow: hidden;
    height: 400px;
}

.skeleton-image {
    height: 180px;
    width: 100%;
}

.skeleton-content {
    padding: 1.5rem;
}

.skeleton-title {
    height: 24px;
    width: 80%;
    margin-bottom: 1rem;
    border-radius: var(--radius-sm);
}

.skeleton-text {
    height: 16px;
    width: 100%;
    margin-bottom: 0.5rem;
    border-radius: var(--radius-sm);
}

.skeleton-text:last-child {
    width: 60%;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        gap: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .sidebar {
        position: static;
    }
    
    .filters-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .sort-dropdown {
        width: 100%;
    }
    
    .sort-btn {
        width: 100%;
        justify-content: space-between;
    }
    
    .sort-menu {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        min-width: 200px;
        z-index: 2000;
    }
    
    .toast-container {
        left: 1rem;
        right: 1rem;
    }
    
    .toast {
        max-width: none;
    }
}

/* Dark mode: handled by the [data-theme="dark"] token overrides in app.css.
   All component colors above are token-based, so no extra rules needed. */