/**
 * Dark Theme CSS Styles
 * Responsive design for trending posts website
 */

/* =====================================================
   CSS Variables (Theme Support)
   ===================================================== */
:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-heading: #ffffff;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --border: #30363d;
    --success: #3fb950;
    --warning: #d29922;
    --danger: #f85149;
    --shadow: rgba(0, 0, 0, 0.3);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: 0.3s ease;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #eaeef2;
    --text-primary: #24292f;
    --text-secondary: #57606a;
    --text-heading: #000000;
    --accent: #0969da;
    --accent-hover: #0550ae;
    --border: #d0d7de;
    --shadow: rgba(0, 0, 0, 0.1);
}

/* =====================================================
   Reset & Base Styles
   ===================================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background var(--transition), color var(--transition);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--accent-hover);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--text-heading);
    font-weight: 600;
    line-height: 1.3;
}

img {
    max-width: 100%;
    height: auto;
}

/* =====================================================
   Container
   ===================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =====================================================
   Header
   ===================================================== */
.site-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    gap: 20px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-heading);
}

.logo:hover {
    color: var(--accent);
}

.main-nav {
    display: flex;
    gap: 25px;
}

.main-nav a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 8px 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.theme-toggle {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}

.theme-toggle:hover {
    background: var(--border);
}

[data-theme="dark"] .sun-icon {
    display: inline;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: none;
}

[data-theme="light"] .moon-icon {
    display: inline;
}

/* Header Search Bar */
.header-search {
    display: flex;
    align-items: center;
    gap: 5px;
    margin-left: auto;
}

.header-search input {
    padding: 8px 12px;
    font-size: 0.9rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    width: 180px;
    transition: all var(--transition);
}

.header-search input:focus {
    outline: none;
    border-color: var(--accent);
    width: 220px;
}

.header-search button {
    padding: 8px 12px;
    background: var(--accent);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background var(--transition);
}

.header-search button:hover {
    background: var(--accent-hover);
}

.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* =====================================================
   Main Layout
   ===================================================== */
.main-content {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 30px;
    padding: 30px 0;
}

.posts-section {
    min-width: 0;
}

.sidebar {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

/* =====================================================
   Post List (Row Style)
   ===================================================== */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.post-row {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.post-row:hover {
    background: var(--bg-secondary);
    margin: 0 -20px;
    padding: 20px;
}

.post-row:first-child {
    padding-top: 0;
}

.post-row-content {
    flex: 1;
    min-width: 0;
}

.post-row-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.post-row-title a {
    color: var(--text-heading);
}

.post-row-title a:hover {
    color: var(--accent);
}

.post-row-excerpt {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 8px;
}

.post-row-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* =====================================================
   Trending Sidebar
   ===================================================== */
.trending-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
}

.trending-section h3 {
    font-size: 1rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent);
}

.trending-list {
    list-style: none;
}

.trending-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 10px;
}

.trending-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.trending-rank {
    color: var(--accent);
    font-weight: 700;
    min-width: 24px;
}

.trending-title {
    flex: 1;
    font-size: 0.9rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.trending-title a {
    color: var(--text-primary);
}

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

/* =====================================================
   Single Post
   ===================================================== */
.post {
    max-width: 800px;
    margin: 0 auto;
}

.post h1 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.post time {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 25px;
}

.post-content {
    line-height: 1.8;
    font-size: 1.05rem;
}

.post-content h2 {
    margin: 30px 0 15px;
    font-size: 1.5rem;
}

.post-content h3 {
    margin: 25px 0 12px;
    font-size: 1.25rem;
}

.post-content p {
    margin-bottom: 20px;
}

.post-content ul,
.post-content ol {
    margin: 0 0 20px 30px;
}

.post-content li {
    margin-bottom: 8px;
}

.post-content blockquote {
    border-left: 4px solid var(--accent);
    padding: 15px 20px;
    margin: 20px 0;
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.post-content pre {
    background: var(--bg-tertiary);
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 20px 0;
}

.post-content code {
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
}

/* =====================================================
   Related Posts
   ===================================================== */
.related-posts {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.related-posts h3 {
    margin-bottom: 20px;
}

.related-posts ul {
    list-style: none;
    display: grid;
    gap: 15px;
}

.related-posts li {
    background: var(--bg-secondary);
    padding: 15px;
    border-radius: 6px;
    border: 1px solid var(--border);
    transition: border-color var(--transition);
}

.related-posts li:hover {
    border-color: var(--accent);
}

.related-posts a {
    color: var(--text-primary);
    font-weight: 500;
}

/* =====================================================
   Share Buttons
   ===================================================== */
.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px 0;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.share-btn.twitter {
    background: #1da1f2;
    color: white;
}

.share-btn.facebook {
    background: #4267b2;
    color: white;
}

.share-btn.whatsapp {
    background: #25d366;
    color: white;
}

.share-btn.linkedin {
    background: #0077b5;
    color: white;
}

.share-btn.telegram {
    background: #0088cc;
    color: white;
}

.share-btn.copy {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

/* =====================================================
   Pagination
   ===================================================== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.page-numbers {
    display: flex;
    gap: 5px;
}

.page-link {
    padding: 10px 15px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-weight: 500;
    transition: all var(--transition);
}

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

.page-link.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.page-ellipsis {
    padding: 10px 5px;
    color: var(--text-secondary);
}

/* =====================================================
   Ad Containers
   ===================================================== */
.ad-container {
    margin: 20px 0;
    text-align: center;
}

.ad-header {
    margin-bottom: 0;
}

/* =====================================================
   Footer
   ===================================================== */
.site-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 30px 0;
    margin-top: 50px;
    text-align: center;
}

.site-footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* =====================================================
   Search Page
   ===================================================== */
.search-container {
    max-width: 600px;
    margin: 50px auto;
}

.search-input {
    width: 100%;
    padding: 15px 20px;
    font-size: 1.1rem;
    background: var(--bg-secondary);
    border: 2px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    transition: border-color var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
}

.search-results {
    margin-top: 30px;
}

.search-result-item {
    padding: 15px;
    margin-bottom: 15px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.search-result-item h3 {
    margin-bottom: 8px;
}

.search-result-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.no-results {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
}

/* =====================================================
   Loading Spinner
   ===================================================== */
.loading {
    display: flex;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* =====================================================
   Mobile Responsive
   ===================================================== */
@media (max-width: 900px) {
    .main-content {
        grid-template-columns: 1fr;
    }

    .sidebar {
        order: 2;
    }
}

@media (max-width: 768px) {
    .site-header .container {
        flex-wrap: wrap;
    }

    .main-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 0;
        order: 3;
    }

    .main-nav.active {
        display: flex;
    }

    .main-nav a {
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
    }

    .menu-toggle {
        display: block;
    }

    .post h1 {
        font-size: 1.5rem;
    }

    .share-buttons {
        justify-content: center;
    }

    .post-row {
        flex-direction: column;
        gap: 10px;
    }

    .header-search {
        display: none;
    }

    .main-nav.active .header-search {
        display: flex;
        width: 100%;
        margin: 10px 0;
    }

    .main-nav.active .header-search input {
        width: 100%;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

    .container {
        padding: 0 15px;
    }

    .pagination {
        gap: 5px;
    }

    .page-link {
        padding: 8px 12px;
    }
}

/* =====================================================
   Author Box
   ===================================================== */
hr {
    border: 0;
    border-top: 1px solid var(--border);
    margin: 2rem 0;
}

.author-box {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin: 2rem 0;
}

.author-img {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
}

.author-img img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent);
}

.author-info h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.2rem;
    color: var(--text-heading);
}

.author-info p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

@media (max-width: 600px) {
    .author-box {
        flex-direction: column;
        text-align: center;
    }
}

/* =====================================================
   Featured Image
   ===================================================== */
.featured-image {
    margin: 20px 0 30px 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.featured-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.featured-image:hover img {
    transform: scale(1.02);
}