/*
Theme Name: W1Network Pro
Theme URI: https://w1network.com
Author: W1Network Team
Author URI: https://w1network.com
Description: Professional TikTok-style WordPress theme with infinite scroll, category-wise feeds, interactive features, and maximum user engagement optimization. Fully optimized for LiteSpeed, Google AdSense, and responsive design.
Version: 5.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: w1network-pro
Tags: infinite-scroll, social, engagement, tiktok-style, modern, responsive, mobile-first, adsense-ready, litespeed-optimized
*/

/* ==========================================================================
   CSS Reset & Base Styles
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors */
    --primary-color: #ff0050;
    --secondary-color: #00f2ea;
    --accent-color: #ffd500;
    
    /* Backgrounds */
    --bg-primary: #000000;
    --bg-secondary: #121212;
    --bg-card: #1a1a1a;
    --bg-hover: #2a2a2a;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    
    /* Interactive Elements */
    --btn-primary: linear-gradient(135deg, #ff0050 0%, #ff4d8e 100%);
    --btn-secondary: linear-gradient(135deg, #00f2ea 0%, #00d4cc 100%);
    --btn-success: linear-gradient(135deg, #00ff88 0%, #00cc6a 100%);
    
    /* Borders & Shadows */
    --border-color: #333333;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-secondary: 'Georgia', serif;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index layers */
    --z-header: 1000;
    --z-modal: 2000;
    --z-tooltip: 3000;
}

/* Light Mode Variables */
body.light-mode {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-card: #ffffff;
    --bg-hover: #f0f0f0;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #e0e0e0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-normal);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md);
    z-index: var(--z-header);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    background: var(--btn-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.header-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-primary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    font-family: var(--font-primary);
    font-weight: 500;
}

.header-btn:hover {
    background: var(--bg-hover);
    transform: scale(1.05);
}

/* Login Button */
.btn-login {
    background: var(--btn-secondary);
    border-color: transparent;
    color: #ffffff;
}

.btn-login:hover {
    box-shadow: 0 4px 12px rgba(0, 242, 234, 0.3);
    transform: translateY(-2px);
}

/* Register Button */
.btn-register {
    background: var(--btn-primary);
    border-color: transparent;
    color: #ffffff;
}

.btn-register:hover {
    box-shadow: 0 4px 12px rgba(255, 0, 80, 0.3);
    transform: translateY(-2px);
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-avatar-btn {
    background: transparent;
    border: 2px solid var(--primary-color);
    padding: 2px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 40px;
    height: 40px;
    overflow: hidden;
}

.user-avatar-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 12px var(--primary-color);
}

.user-avatar-btn img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
}

.user-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    min-width: 220px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 1001;
}

.user-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-info {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.user-name {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.user-email {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.user-menu-links {
    padding: var(--spacing-sm);
}

.user-menu-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    transition: all var(--transition-fast);
    font-size: 0.9rem;
}

.user-menu-link:hover {
    background: var(--bg-hover);
}

.user-menu-link.logout {
    color: #ff4d4d;
}

.user-menu-link.logout:hover {
    background: rgba(255, 77, 77, 0.1);
}

/* Responsive Header Actions */
@media (max-width: 640px) {
    .btn-text {
        display: none;
    }
    
    .header-btn {
        padding: var(--spacing-sm);
    }
    
    .btn-icon {
        margin: 0;
    }
    
    .header-actions {
        gap: var(--spacing-sm);
    }
}

/* ==========================================================================
   Category Navigation Tabs
   ========================================================================== */

.category-tabs {
    position: sticky;
    top: 60px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    z-index: 999;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: var(--spacing-sm) 0;
}

.category-tabs::-webkit-scrollbar {
    display: none;
}

.category-tabs-container {
    display: flex;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.category-tab {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 500;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.category-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.category-tab.active {
    background: var(--btn-primary);
    border-color: transparent;
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Main Content Area
   ========================================================================== */

.site-main {
    margin-top: 120px;
    min-height: 100vh;
    padding-bottom: var(--spacing-2xl);
}

.content-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================================================
   TikTok-Style Vertical Feed
   ========================================================================== */

.tiktok-feed {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
}

.category-section {
    margin-bottom: var(--spacing-2xl);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding: 0 var(--spacing-sm);
}

.category-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.category-icon {
    width: 32px;
    height: 32px;
    background: var(--btn-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.view-all-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.85rem;
}

.view-all-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* ==========================================================================
   Post Card Styles
   ========================================================================== */

.post-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-normal);
    position: relative;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.post-card.snap-item {
    scroll-snap-align: start;
    min-height: 80vh;
}

.post-thumbnail {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    overflow: hidden;
    background: var(--bg-secondary);
}

.post-thumbnail img,
.post-thumbnail video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post-card:hover .post-thumbnail img,
.post-card:hover .post-thumbnail video {
    transform: scale(1.05);
}

.post-badges {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    display: flex;
    gap: var(--spacing-sm);
    z-index: 10;
}

.badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.badge.trending {
    background: linear-gradient(135deg, #ff0050 0%, #ff4d8e 100%);
    color: white;
}

.badge.hot {
    background: linear-gradient(135deg, #ff6b00 0%, #ff9500 100%);
    color: white;
}

.badge.new {
    background: linear-gradient(135deg, #00f2ea 0%, #00d4cc 100%);
    color: white;
}

.post-content {
    padding: var(--spacing-lg);
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.post-category {
    background: var(--btn-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 12px;
    color: white;
    font-weight: 600;
    font-size: 0.75rem;
}

.post-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.post-views {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: auto;
}

.post-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
    color: var(--text-primary);
}

.post-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

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

/* ==========================================================================
   Interactive Engagement Buttons
   ========================================================================== */

.post-actions {
    display: flex;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
}

.action-btn:hover {
    background: var(--bg-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.action-btn.liked {
    background: linear-gradient(135deg, #ff0050 0%, #ff4d8e 100%);
    color: white;
    border-color: transparent;
}

.action-btn.bookmarked {
    background: linear-gradient(135deg, #ffd500 0%, #ffed4e 100%);
    color: #000;
    border-color: transparent;
}

.action-btn .icon {
    font-size: 1.1rem;
    transition: transform var(--transition-fast);
}

.action-btn:hover .icon {
    transform: scale(1.2);
}

.action-count {
    font-weight: 700;
}

/* Reaction Buttons */
.reaction-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.reaction-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.2rem;
}

.reaction-btn:hover {
    transform: scale(1.2);
    background: var(--bg-hover);
}

.reaction-btn.active {
    background: var(--btn-primary);
    border-color: transparent;
}

/* ==========================================================================
   Comments Section
   ========================================================================== */

.comments-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
}

.comments-header {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.comment-form {
    margin-bottom: var(--spacing-xl);
}

.comment-input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-family: var(--font-primary);
    resize: vertical;
    min-height: 100px;
    transition: all var(--transition-fast);
}

.comment-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 0, 80, 0.1);
}

.comment-submit {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-xl);
    background: var(--btn-primary);
    border: none;
    border-radius: 25px;
    color: white;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.comment-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.comment-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.comment-item {
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: 12px;
    transition: all var(--transition-fast);
}

.comment-item:hover {
    background: var(--bg-hover);
}

.comment-author {
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.comment-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.comment-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   Share Modal
   ========================================================================== */

.share-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.share-modal.active {
    display: flex;
}

.share-content {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: 20px;
    max-width: 500px;
    width: 90%;
    animation: modalSlideUp 0.3s ease;
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.share-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.share-title {
    font-size: 1.5rem;
    font-weight: 700;
}

.share-close {
    background: var(--bg-secondary);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.share-close:hover {
    background: var(--bg-hover);
    transform: rotate(90deg);
}

.share-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--spacing-md);
}

.share-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share-option:hover {
    background: var(--bg-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.share-option .icon {
    font-size: 2rem;
}

.share-option.facebook { color: #1877f2; }
.share-option.twitter { color: #1da1f2; }
.share-option.whatsapp { color: #25d366; }
.share-option.linkedin { color: #0077b5; }
.share-option.pinterest { color: #e60023; }
.share-option.telegram { color: #0088cc; }

/* ==========================================================================
   Loading & Infinite Scroll
   ========================================================================== */

.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-2xl);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.load-more-trigger {
    height: 100px;
    visibility: hidden;
}

/* ==========================================================================
   Scroll to Top Button
   ========================================================================== */

.scroll-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--btn-primary);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(255, 0, 80, 0.4);
}

/* ==========================================================================
   AdSense Integration - Optimized for Google Ads
   ========================================================================== */

.ad-container {
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    text-align: center;
    min-height: 250px;
    max-width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.ad-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.3;
}

.ad-container ins {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
}

.ad-infeed {
    margin: var(--spacing-lg) 0;
    min-height: 280px;
    grid-column: 1 / -1; /* Span full width in grid */
}

.ad-sidebar {
    position: sticky;
    top: 140px;
    margin: var(--spacing-md) 0;
    min-height: 600px;
}

.ad-footer {
    margin: var(--spacing-2xl) auto;
    min-height: 250px;
}

.ad-header {
    margin: var(--spacing-md) auto var(--spacing-xl);
    min-height: 90px;
}

/* AdSense Responsive Styles */
@media (max-width: 767px) {
    .ad-container {
        min-height: 200px;
        margin: var(--spacing-md) 0;
    }
    
    .ad-infeed {
        min-height: 250px;
    }
    
    .ad-sidebar {
        position: static;
        min-height: 250px;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    .ad-container {
        min-height: 250px;
    }
    
    .ad-sidebar {
        min-height: 400px;
    }
}

/* Ensure AdSense scripts load properly */
.adsbygoogle {
    display: block;
    width: 100%;
    height: auto;
}

/* Loading state for ads */
.ad-container:empty::after {
    content: 'Advertisement Loading...';
    color: var(--text-muted);
    font-size: 0.85rem;
    opacity: 0.6;
}

/* ==========================================================================
   Single Post Page
   ========================================================================== */

.single-post-header {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
}

.single-post-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}

.single-post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.single-post-content {
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    margin-bottom: var(--spacing-xl);
    font-size: 1.1rem;
    line-height: 1.8;
}

.single-post-content h1,
.single-post-content h2,
.single-post-content h3,
.single-post-content h4,
.single-post-content h5,
.single-post-content h6 {
    margin: var(--spacing-xl) 0 var(--spacing-md);
    color: var(--text-primary);
    font-weight: 700;
}

.single-post-content h1 { font-size: 2rem; }
.single-post-content h2 { font-size: 1.75rem; }
.single-post-content h3 { font-size: 1.5rem; }

.single-post-content p {
    margin-bottom: var(--spacing-lg);
    color: var(--text-secondary);
}

.single-post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: var(--spacing-lg) 0;
}

.single-post-content a {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: border-color var(--transition-fast);
}

.single-post-content a:hover {
    border-bottom-color: var(--primary-color);
}

.related-posts {
    margin-top: var(--spacing-2xl);
}

.related-posts-header {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

/* ==========================================================================
   Responsive Grid
   ========================================================================== */

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

/* ==========================================================================
   Responsive Design - Mobile First Approach
   ========================================================================== */

/* Mobile First - Base styles above are for mobile */

/* Small Mobile (320px - 480px) */
@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }
    
    .site-header {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .site-logo {
        font-size: 1.1rem;
    }
    
    .header-actions {
        gap: 4px;
    }
    
    .category-tab {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
    
    .post-card {
        border-radius: 12px;
    }
    
    .user-dropdown {
        min-width: 200px;
        right: -10px;
    }
}

/* Tablets (768px - 1024px) */
@media (min-width: 768px) {
    :root {
        font-size: 16px;
    }
    
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .category-tabs-container {
        justify-content: center;
    }
    
    .header-actions {
        gap: var(--spacing-md);
    }
    
    .btn-text {
        display: inline;
    }
}

/* Desktop (1024px - 1400px) */
@media (min-width: 1024px) {
    :root {
        font-size: 17px;
    }
    
    .posts-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .single-post-title {
        font-size: 3rem;
    }
    
    .post-card:hover {
        transform: translateY(-4px);
    }
}

/* Large Desktop (1400px+) */
@media (min-width: 1400px) {
    :root {
        font-size: 18px;
    }
    
    .posts-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Mobile Specific Optimizations */
@media (max-width: 767px) {
    .site-header {
        padding: var(--spacing-sm);
    }
    
    .site-logo {
        font-size: 1.2rem;
    }
    
    .post-card.snap-item {
        min-height: 90vh;
    }
    
    .header-actions {
        gap: var(--spacing-xs);
    }
    
    .category-tab {
        font-size: 0.85rem;
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .single-post-title {
        font-size: 1.75rem;
    }
    
    .single-post-content {
        padding: var(--spacing-md);
        font-size: 1rem;
    }
    
    /* Optimize header for mobile */
    .header-btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }
    
    /* Hide text on small screens, show only icons */
    .btn-text {
        display: none;
    }
    
    /* Stack category sections vertically on mobile */
    .category-section {
        margin-bottom: var(--spacing-xl);
    }
}

/* Tablet Landscape */
@media (min-width: 768px) and (max-width: 1023px) {
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
}

/* Touch Gestures Support */
@media (hover: none) and (pointer: coarse) {
    .post-card:active {
        transform: scale(0.98);
    }
    
    .action-btn:active {
        transform: scale(0.95);
    }
    
    .header-btn:active {
        transform: scale(0.95);
    }
    
    /* Larger touch targets for mobile */
    .action-btn,
    .header-btn,
    .category-tab {
        min-height: 44px;
        min-width: 44px;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .post-thumbnail img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Landscape Orientation */
@media (orientation: landscape) and (max-height: 500px) {
    .site-header {
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .post-card.snap-item {
        min-height: 95vh;
    }
}

/* Print Media Styles */
@media print {
    .site-header,
    .category-tabs,
    .post-actions,
    .share-modal,
    .scroll-to-top,
    .ad-container,
    .header-actions,
    .user-menu {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .post-card {
        border: 1px solid #000;
        page-break-inside: avoid;
    }
}

/* Reduced Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Dark Mode Preference */
@media (prefers-color-scheme: dark) {
    body:not(.light-mode) {
        --bg-primary: #000000;
        --bg-secondary: #121212;
        --bg-card: #1a1a1a;
        --text-primary: #ffffff;
    }
}

/* Light Mode Preference */
@media (prefers-color-scheme: light) {
    body.light-mode {
        --bg-primary: #ffffff;
        --bg-secondary: #f5f5f5;
        --bg-card: #ffffff;
        --text-primary: #000000;
    }
}

/* ==========================================================================
   Animations & Transitions
   ========================================================================== */

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

.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.hidden {
    display: none !important;
}

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

.mt-xl {
    margin-top: var(--spacing-xl);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .site-header,
    .category-tabs,
    .post-actions,
    .share-modal,
    .scroll-to-top,
    .ad-container {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
}