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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --background: #ffffff;
    --surface: #f8fafc;
    --border: #e2e8f0;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}

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

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

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

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-size: 0.875rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: none;
}

.btn-ghost:hover {
    background: var(--surface);
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.hero-search {
    max-width: 500px;
    margin: 0 auto;
}

.search-container {
    position: relative;
    display: flex;
    align-items: center;
}

.search-input {
    width: 100%;
    padding: 1rem 1.5rem;
    padding-right: 4rem;
    border: 2px solid var(--border);
    border-radius: 0.75rem;
    font-size: 1rem;
    background: white;
    transition: border-color 0.3s ease;
}

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

.search-btn {
    position: absolute;
    right: 0.75rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    padding: 0.75rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

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

/* Blog Content */
.blog-content {
    padding: 4rem 0;
}

.blog-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
}

/* Sidebar */
.blog-sidebar {
    position: sticky;
    top: 6rem;
    height: fit-content;
}

.sidebar-section {
    background: white;
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.sidebar-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.category-list li {
    margin-bottom: 0.5rem;
}

.category-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border-radius: 0.5rem;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all 0.3s ease;
}

.category-link:hover,
.category-link.active {
    background: var(--surface);
    color: var(--primary-color);
}

.count {
    font-size: 0.75rem;
    background: var(--border);
    color: var(--text-secondary);
    padding: 0.25rem 0.5rem;
    border-radius: 1rem;
}

.category-link.active .count {
    background: var(--primary-color);
    color: white;
}

.recent-posts {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.recent-post {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.recent-post:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.recent-post-meta {
    margin-bottom: 0.5rem;
}

.recent-post-date {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.recent-post h4 {
    font-size: 0.875rem;
    line-height: 1.4;
}

.recent-post h4 a {
    text-decoration: none;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.recent-post h4 a:hover {
    color: var(--primary-color);
}

.newsletter-signup p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.newsletter-input {
    padding: 0.75rem;
    border: 2px solid var(--border);
    border-radius: 0.5rem;
    font-size: 0.875rem;
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Main Content */
.blog-main {
    min-height: 100vh;
}

.blog-filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: white;
    border-radius: 0.75rem;
    box-shadow: var(--shadow);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    font-weight: 500;
    color: var(--text-secondary);
}

.filter-select {
    padding: 0.5rem 1rem;
    border: 2px solid var(--border);
    border-radius: 0.5rem;
    background: white;
    cursor: pointer;
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Blog Grid */
.blog-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.blog-post {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.blog-post:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.blog-post.featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.post-image {
    position: relative;
    overflow: hidden;
}

.post-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.post-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--gradient);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.post-content {
    padding: 2rem;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.post-category {
    background: var(--surface);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-weight: 500;
}

.post-date,
.post-read-time {
    color: var(--text-secondary);
}

.post-title {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.blog-post.featured .post-title {
    font-size: 2rem;
}

.post-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.post-author {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.author-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.author-name {
    font-weight: 500;
    color: var(--text-primary);
}

.read-more {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 3rem;
}

.pagination-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border);
    background: white;
    color: var(--text-primary);
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-numbers {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.pagination-number {
    width: 40px;
    height: 40px;
    border: 2px solid var(--border);
    background: white;
    color: var(--text-primary);
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.pagination-number:hover,
.pagination-number.active {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.pagination-dots {
    color: var(--text-secondary);
    margin: 0 0.5rem;
}

/* Newsletter CTA */
.newsletter-cta {
    padding: 4rem 0;
    background: var(--text-primary);
    color: white;
    text-align: center;
}

.newsletter-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.newsletter-content p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.newsletter-form-large {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.newsletter-input-large {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.newsletter-input-large:focus {
    outline: none;
}

.newsletter-note {
    font-size: 0.875rem;
    opacity: 0.7;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-section h4 {
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .blog-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .blog-sidebar {
        position: static;
        order: 2;
    }

    .blog-post.featured {
        grid-template-columns: 1fr;
    }

    .blog-post.featured .post-title {
        font-size: 1.5rem;
    }

    .newsletter-form-large {
        flex-direction: column;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero {
        padding: 6rem 0 3rem;
    }

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

    .post-content {
        padding: 1.5rem;
    }

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

    .pagination {
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .pagination-numbers {
        order: -1;
        width: 100%;
        justify-content: center;
    }
}