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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}


.navbar {
    background: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo a {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c3e50;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #555;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #3498db;
}

.auth-buttons .btn-login {
    background: #3498db;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    text-decoration: none;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}


.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}


.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem;
}

.post-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.post-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-card-content {
    padding: 1.5rem;
}

.post-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.post-category {
    background: #e1f0fa;
    color: #2980b9;
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    text-decoration: none;
}

.post-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.post-title a {
    color: #333;
    text-decoration: none;
}

.post-excerpt {
    color: #666;
    margin-bottom: 1rem;
}

.read-more {
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
}


.category-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    padding: 2rem;
}

.tag {
    background: white;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    color: #333;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s;
}

.tag:hover {
    background: #3498db;
    color: white;
    transform: scale(1.05);
}


.post-actions {
    display: flex;
    gap: 1rem;
    padding: 2rem;
    justify-content: center;
}

.like-btn, .favorite-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s;
}

.like-btn {
    background: #f8f9fa;
    color: #e74c3c;
}

.like-btn.liked {
    background: #e74c3c;
    color: white;
}

.favorite-btn {
    background: #f8f9fa;
    color: #f39c12;
}

.favorite-btn.favorited {
    background: #f39c12;
    color: white;
}


.comments-section {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 10px;
}

.comment {
    border-bottom: 1px solid #eee;
    padding: 1rem 0;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    color: #666;
}

.comment-author {
    font-weight: bold;
    color: #333;
}

.comment-date {
    font-size: 0.9rem;
}

.comment-form input,
.comment-form textarea {
    width: 100%;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
}


.load-more {
    text-align: center;
    padding: 2rem;
}

.btn {
    background: #3498db;
    color: white;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s;
}

.btn:hover {
    background: #2980b9;
}


footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

.social-links {
    margin-top: 1rem;
}

.social-links a {
    color: white;
    text-decoration: none;
    margin: 0 0.5rem;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.social-links a:hover {
    opacity: 1;
}