:root {
    --primary: #e67e22;
    --secondary: #f39c12;
    --bg: #fff8f0;
    --card-bg: #ffffff;
    --text: #2c3e50;
    --text-light: #7f8c8d;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
    --radius: 16px;
    --transition: 0.3s ease;
}

[data-theme="dark"] {
    --bg: #1a1a2e;
    --card-bg: #16213e;
    --text: #e0e0e0;
    --text-light: #b0b0b0;
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
}

[data-theme="tech"] {
    --primary: #3498db;
    --secondary: #2ecc71;
    --bg: #f0f8ff;
}

[data-theme="fashion"] {
    --primary: #e84393;
    --secondary: #fd79a8;
    --bg: #fff5f7;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    transition: background var(--transition), color var(--transition);
}

.navbar {
    background: var(--card-bg);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition);
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-links a:hover {
    color: var(--primary);
    background: rgba(230, 126, 34, 0.1);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text);
    border-radius: 3px;
    transition: var(--transition);
}

.hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    text-align: center;
    padding: 4rem 2rem;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.hero p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.95;
}

.search-bar {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    background: white;
    border-radius: 50px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.search-bar input {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    outline: none;
    font-size: 1rem;
    color: var(--text);
}

.search-bar button {
    padding: 1rem 2rem;
    background: var(--primary);
    color: white;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: background var(--transition);
}

.search-bar button:hover {
    background: var(--secondary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
}

.sidebar {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    position: sticky;
    top: 90px;
    height: fit-content;
}

.sidebar h3 {
    margin-bottom: 1rem;
    color: var(--primary);
}

.filter-group {
    margin-bottom: 1rem;
}

.filter-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
}

.filter-group select,
.filter-group input {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 0.9rem;
    background: var(--bg);
    color: var(--text);
}

.price-range {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.price-range input {
    width: 45%;
}

.filter-btn {
    width: 100%;
    padding: 0.8rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
}

.filter-btn:hover {
    background: var(--secondary);
}

.stats-widget {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
}

.stats-widget h4 {
    margin-bottom: 0.8rem;
    color: var(--primary);
}

.stats-widget p {
    margin: 0.3rem 0;
    font-size: 0.9rem;
}

.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.post-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.post-card:hover .card-image img {
    transform: scale(1.05);
}

.category-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--primary);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.card-body {
    padding: 1.2rem;
}

.card-body h3 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    color: var(--text);
}

.location {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.content {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    margin-bottom: 0.8rem;
    flex-wrap: wrap;
}

.price {
    color: var(--primary);
    font-weight: 600;
}

.rating {
    color: #f1c40f;
}

.date {
    color: var(--text-light);
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 0.8rem;
}

.tag {
    background: rgba(230, 126, 34, 0.1);
    color: var(--primary);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
}

.card-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.share-btn {
    background: none;
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 0.85rem;
}

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

.read-more {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: color var(--transition);
}

.read-more:hover {
    color: var(--secondary);
}

.no-results {
    text-align: center;
    padding: 3rem;
    color: var(--text-light);
}

.no-results i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.theme-switcher {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 999;
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.theme-btn {
    background: var(--card-bg);
    border: 1px solid #ddd;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
    color: var(--text);
}

.theme-btn:hover {
    transform: scale(1.1);
}

.theme-select {
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px solid #ddd;
    background: var(--card-bg);
    color: var(--text);
    font-size: 0.85rem;
}

.footer {
    background: var(--card-bg);
    padding: 2rem 2rem 1rem;
    margin-top: 3rem;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-section h4 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.footer-section a {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    margin: 0.3rem 0;
    transition: color var(--transition);
}

.footer-section a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    margin-top: 1.5rem;
    border-top: 1px solid #eee;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Admin Styles */
.admin-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.login-form {
    max-width: 400px;
    margin: 3rem auto;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.login-form h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.7rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg);
    color: var(--text);
}

.btn-primary {
    background: var(--primary);
    color: white;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
    width: 100%;
}

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

.btn-danger {
    background: #e74c3c;
    color: white;
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.85rem;
    transition: background var(--transition);
}

.btn-danger:hover {
    background: #c0392b;
}

.admin-dashboard h1 {
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.admin-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.admin-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.admin-card h3 {
    margin-bottom: 1rem;
    color: var(--primary);
}

.admin-card.full-width {
    grid-column: 1 / -1;
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 0.8rem;
    text-align: left;
    border-bottom: 1px solid #eee;
}

th {
    background: rgba(230, 126, 34, 0.1);
    color: var(--primary);
    font-weight: 600;
}

tr:hover {
    background: rgba(230, 126, 34, 0.05);
}

.alert {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-weight: 500;
}

.alert.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
    .sidebar {
        position: static;
    }
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--card-bg);
        padding: 1rem;
        box-shadow: var(--shadow);
    }
    .nav-links.active {
        display: flex;
    }
    .hamburger {
        display: flex;
    }
    .hero h1 {
        font-size: 1.8rem;
    }
    .post-grid {
        grid-template-columns: 1fr;
    }
    .theme-switcher {
        top: 70px;
        right: 10px;
    }
}