:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --bg-light: #f8fafc;
    --border: #e2e8f0;
    --radius: 12px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    background: #fff;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

/* Navbar */
.navbar {
    padding: .75rem 0;
    backdrop-filter: blur(10px);
    background: rgba(255,255,255,.95) !important;
}

.navbar-brand {
    font-size: 1.25rem;
    letter-spacing: -.02em;
}

.nav-link {
    font-size: .9rem;
    font-weight: 500;
    color: var(--text-muted);
    padding: .5rem 1rem !important;
    transition: color .2s;
}

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

/* Blog List */
.blog-hero {
    background: var(--bg-light);
    padding: 3.5rem 0 3rem;
    border-bottom: 1px solid var(--border);
}

.blog-hero h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -.03em;
    color: var(--text-dark);
}

.blog-hero p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

.blog-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow .3s, transform .2s;
    background: #fff;
    height: 100%;
}

.blog-card:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,.08);
    transform: translateY(-2px);
}

.blog-card .card-img-top {
    height: 220px;
    object-fit: cover;
}

.blog-card .card-body {
    padding: 1.5rem;
}

.blog-card .card-title {
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: -.01em;
    color: var(--text-dark);
    margin-bottom: .75rem;
}

.blog-card .card-title a {
    text-decoration: none;
    color: inherit;
    transition: color .2s;
}

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

.blog-card .card-text {
    font-size: .9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.blog-card .card-meta {
    font-size: .8rem;
    color: var(--text-light);
    padding-top: .75rem;
    border-top: 1px solid var(--border);
    margin-top: 1rem;
}

.category-badge {
    display: inline-block;
    background: var(--bg-light);
    color: var(--primary);
    font-size: .75rem;
    font-weight: 600;
    padding: .25rem .75rem;
    border-radius: 50px;
    text-decoration: none;
    transition: background .2s;
}

.category-badge:hover {
    background: #dbeafe;
    color: var(--primary-dark);
}

/* Blog Detail */
.blog-detail-header {
    padding: 3rem 0 2rem;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border);
}

.blog-detail-header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: -.03em;
    line-height: 1.3;
    max-width: 800px;
}

.blog-detail-meta {
    font-size: .85rem;
    color: var(--text-muted);
}

.blog-featured-image {
    border-radius: var(--radius);
    overflow: hidden;
    margin: -2rem auto 2rem;
    max-width: 900px;
    box-shadow: 0 4px 20px rgba(0,0,0,.08);
}

.blog-featured-image img {
    width: 100%;
    height: auto;
    display: block;
}

.blog-content {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.8;
}

.blog-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem;
    letter-spacing: -.02em;
}

.blog-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 2rem 0 .75rem;
}

.blog-content p {
    margin-bottom: 1.25rem;
    color: var(--text-dark);
}

.blog-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 1.5rem 0;
}

.blog-content ul, .blog-content ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.blog-content li {
    margin-bottom: .5rem;
}

.blog-content blockquote {
    border-left: 4px solid var(--primary);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    background: var(--bg-light);
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--text-muted);
    font-style: italic;
}

/* FAQ Section */
.faq-section {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 2rem;
    margin: 3rem auto;
    max-width: 800px;
}

.faq-section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -.02em;
}

.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: .75rem;
    overflow: hidden;
}

.faq-item .accordion-button {
    font-weight: 600;
    font-size: .95rem;
    color: var(--text-dark);
    background: #fff;
    box-shadow: none;
    padding: 1rem 1.25rem;
}

.faq-item .accordion-button:not(.collapsed) {
    color: var(--primary);
    background: #fff;
}

.faq-item .accordion-button:focus {
    box-shadow: none;
    border-color: transparent;
}

.faq-item .accordion-body {
    font-size: .9rem;
    color: var(--text-muted);
    line-height: 1.7;
    padding: 0 1.25rem 1rem;
}

/* Sidebar */
.sidebar-widget {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.sidebar-widget h5 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: -.01em;
}

.sidebar-post {
    display: flex;
    gap: .75rem;
    padding: .75rem 0;
    border-bottom: 1px solid var(--border);
}

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

.sidebar-post img {
    width: 70px;
    height: 50px;
    object-fit: cover;
    border-radius: 6px;
    flex-shrink: 0;
}

.sidebar-post-title {
    font-size: .825rem;
    font-weight: 500;
    line-height: 1.4;
    color: var(--text-dark);
    text-decoration: none;
    display: block;
}

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

.sidebar-post-date {
    font-size: .725rem;
    color: var(--text-light);
    margin-top: .25rem;
}

/* Pagination */
.pagination .page-link {
    border: 1px solid var(--border);
    color: var(--text-dark);
    font-size: .875rem;
    font-weight: 500;
    padding: .5rem .85rem;
    border-radius: 8px !important;
    margin: 0 .15rem;
}

.pagination .page-link:hover {
    background: var(--bg-light);
    border-color: var(--primary);
    color: var(--primary);
}

.pagination .active .page-link {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* Breadcrumb */
.breadcrumb {
    font-size: .825rem;
    margin-bottom: .5rem;
}

.breadcrumb-item a {
    color: var(--text-muted);
    text-decoration: none;
}

.breadcrumb-item a:hover {
    color: var(--primary);
}

.breadcrumb-item.active {
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    .blog-hero h1 {
        font-size: 1.5rem;
    }
    .blog-detail-header h1 {
        font-size: 1.6rem;
    }
    .blog-content {
        font-size: 1rem;
    }
    .blog-card .card-img-top {
        height: 180px;
    }
}

/* Admin */
.admin-sidebar {
    min-height: 100vh;
    background: var(--text-dark);
}

.admin-sidebar .nav-link {
    color: rgba(255,255,255,.7);
    font-size: .875rem;
    padding: .65rem 1.25rem !important;
    border-radius: 8px;
    margin-bottom: .2rem;
}

.admin-sidebar .nav-link:hover,
.admin-sidebar .nav-link.active {
    background: rgba(255,255,255,.1);
    color: #fff;
}

.admin-content {
    background: var(--bg-light);
    min-height: 100vh;
}

.stat-card {
    border: none;
    border-radius: var(--radius);
    box-shadow: 0 1px 3px rgba(0,0,0,.06);
}

.image-preview {
    max-width: 200px;
    border-radius: 8px;
    border: 2px solid var(--border);
}