:root {
    --primary: #4285f4;
    --primary-light: #6fa8dc;
    --primary-dark: #1a73e8;
    --accent: #34a853;
    --accent-hover: #2d9348;
    --gray-dark: #333;
    --gray: #757575;
    --gray-light: #f5f7fa;
    --warning: #fbbc05;
    --error: #ea4335;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    --radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--gray-dark);
    background-color: var(--gray-light);
    line-height: 1.6;
}

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

/* Header (Same as main site) */
header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
    color: var(--primary);
    text-decoration: none;
}

.logo i {
    font-size: 24px;
    margin-right: 8px;
}

.logo h1 {
    font-size: 20px;
    font-weight: 600;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    text-decoration: none;
    color: var(--gray);
    font-weight: 500;
    transition: var(--transition);
    padding: 5px 0;
    position: relative;
}

nav ul li a:hover {
    color: var(--primary);
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary);
    transition: var(--transition);
}

nav ul li a:hover::after {
    width: 100%;
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--primary);
    font-size: 24px;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    color: white;
    padding: 160px 0 80px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h2 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    line-height: 1.2;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.search-container {
    max-width: 600px;
    margin: 30px auto 0;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 15px 20px;
    padding-right: 50px;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    box-shadow: var(--shadow);
}

.search-btn {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 1.2rem;
}

/* Wiki Layout */
.wiki-content {
    padding: 60px 0;
}

.wiki-layout {
    display: flex;
    gap: 30px;
}

.wiki-sidebar {
    width: 300px;
    flex-shrink: 0;
}

.wiki-main {
    flex: 1;
}

/* Sidebar Widgets */
.sidebar-widget {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

.sidebar-widget h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.sidebar-widget h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background-color: var(--primary);
}

/* Categories List */
.wiki-categories {
    list-style: none;
}

.wiki-categories li {
    margin-bottom: 10px;
}

.wiki-categories a {
    color: var(--gray);
    text-decoration: none;
    transition: var(--transition);
    display: block;
    padding: 5px 0;
}

.wiki-categories a:hover {
    color: var(--primary);
}

/* Popular Articles */
.popular-articles {
    list-style: none;
}

.popular-articles li {
    margin-bottom: 15px;
    border-bottom: 1px solid var(--gray-light);
    padding-bottom: 15px;
}

.popular-articles li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.popular-articles a {
    color: var(--gray-dark);
    text-decoration: none;
    transition: var(--transition);
    display: block;
    margin-bottom: 5px;
}

.popular-articles a:hover {
    color: var(--primary);
}

.view-count {
    color: var(--gray);
    font-size: 0.85rem;
}

/* Welcome Section */
.wiki-welcome {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: var(--shadow);
}

.wiki-welcome h3 {
    color: var(--primary);
    margin-bottom: 15px;
    font-size: 1.8rem;
}

/* Article Cards */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.article-card {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.article-card:hover {
    transform: translateY(-5px);
}

.article-card h4 {
    margin-bottom: 10px;
}

.article-card h4 a {
    color: var(--primary-dark);
    text-decoration: none;
    transition: var(--transition);
}

.article-card h4 a:hover {
    color: var(--primary);
}

.article-meta {
    display: flex;
    justify-content: space-between;
    color: var(--gray);
    font-size: 0.85rem;
}

.category a {
    color: var(--primary);
    text-decoration: none;
}

/* Article Page Styles */
.article-section {
    padding: 60px 0;
}

.article-actions {
    margin-bottom: 30px;
    display: flex;
    gap: 10px;
}

.wiki-article {
    background-color: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

.wiki-article h2 {
    color: var(--primary-dark);
    margin: 1.5em 0 0.8em;
    font-size: 1.8rem;
}

.wiki-article h3 {
    color: var(--primary-dark);
    margin: 1.2em 0 0.6em;
    font-size: 1.4rem;
}

.wiki-article h4 {
    color: var(--gray-dark);
    margin: 1em 0 0.5em;
    font-size: 1.2rem;
}

.wiki-article p {
    margin-bottom: 1em;
}

.wiki-article ul,
.wiki-article ol {
    margin-bottom: 1em;
    padding-left: 2em;
}

.wiki-article li {
    margin-bottom: 0.5em;
}

.wiki-article code {
    background-color: #f4f4f4;
    padding: 2px 5px;
    border-radius: 3px;
    font-family: monospace;
    font-size: 0.9em;
}

.wiki-article pre {
    background-color: #f4f4f4;
    padding: 15px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin-bottom: 1em;
}

.wiki-article pre code {
    background: none;
    padding: 0;
}

.wiki-article img {
    max-width: 100%;
    height: auto;
    border-radius: 5px;
    margin: 1em 0;
}

.wiki-article table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1em;
}

.wiki-article th,
.wiki-article td {
    padding: 10px;
    border: 1px solid #ddd;
    text-align: left;
}

.wiki-article th {
    background-color: var(--gray-light);
}

.article-tags {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-light);
}

.tag {
    display: inline-block;
    background-color: var(--gray-light);
    color: var(--gray);
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.85rem;
    margin: 0 5px 5px 0;
    text-decoration: none;
    transition: var(--transition);
}

.tag:hover {
    background-color: var(--primary-light);
    color: white;
}

/* Table of Contents */
.table-of-contents ul {
    list-style: none;
    padding: 0;
}

.table-of-contents li {
    margin-bottom: 8px;
}

.table-of-contents a {
    color: var(--gray);
    text-decoration: none;
    transition: var(--transition);
}

.table-of-contents a:hover {
    color: var(--primary);
}

.table-of-contents .toc-h3 {
    padding-left: 15px;
}

.table-of-contents .toc-h4 {
    padding-left: 30px;
}

/* Related Articles */
.related-articles {
    list-style: none;
}

.related-articles li {
    margin-bottom: 10px;
}

.related-articles a {
    color: var(--gray-dark);
    text-decoration: none;
    transition: var(--transition);
}

.related-articles a:hover {
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-sm {
    padding: 8px 15px;
    font-size: 0.9rem;
}

/* Category Badge */
.category-badge {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    text-decoration: none;
    margin-right: 10px;
    transition: var(--transition);
}

.category-badge:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.article-date {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Footer (Same as main site) */
footer {
    background-color: var(--gray-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-column h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: white;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

/* Responsive Design */
@media (max-width: 991px) {
    .wiki-layout {
        flex-direction: column;
    }

    .wiki-sidebar {
        width: 100%;
        order: 2;
    }

    .wiki-main {
        order: 1;
    }
}

@media (max-width: 768px) {
    .mobile-nav-toggle {
        display: block;
    }

    nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: white;
        transition: var(--transition);
        z-index: 999;
    }

    nav.active {
        left: 0;
    }

    nav ul {
        flex-direction: column;
        padding: 20px;
    }

    nav ul li {
        margin: 10px 0;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .article-grid {
        grid-template-columns: 1fr;
    }
}