/* ============================================
   SimpleCMS Frontend Styles
   ============================================ */

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

:root {
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --text: #1f2937;
    --text-light: #6b7280;
    --bg: #ffffff;
    --bg-light: #f9fafb;
    --border: #e5e7eb;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background: var(--bg-light);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* ============================================
   Header
   ============================================ */
.site-header {
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-size: 1.4rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.6rem;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.main-nav a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.main-nav a:hover {
    color: var(--primary);
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropbtn {
    background: none;
    border: none;
    color: var(--text-light);
    font-weight: 500;
    cursor: pointer;
    font-size: 1rem;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg);
    min-width: 180px;
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    padding: 8px 0;
    margin-top: 10px;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    display: block;
    padding: 10px 16px;
    color: var(--text);
    font-size: 0.95rem;
}

.dropdown-content a:hover {
    background: var(--bg-light);
}

/* ============================================
   Main Content
   ============================================ */
.site-main {
    flex: 1;
    padding: 40px 0;
}

.blog-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
}

/* ============================================
   Post Cards
   ============================================ */
.posts-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.post-card {
    background: var(--bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.post-thumbnail {
    display: block;
    overflow: hidden;
}

.post-thumbnail img {
    width: 100%;
    height: 240px;
    object-fit: cover;
    transition: transform 0.3s;
}

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

.post-content {
    padding: 24px;
}

.post-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.category {
    display: inline-block;
    background: #ede9fe;
    color: #6d28d9;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.post-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
    line-height: 1.3;
}

.post-title a {
    color: var(--text);
    text-decoration: none;
}

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

.post-excerpt {
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.7;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ============================================
   Sidebar
   ============================================ */
.blog-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.sidebar-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.sidebar-card h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
}

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

.recent-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.recent-list li:last-child {
    border-bottom: none;
}

.recent-list a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.95rem;
}

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

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    display: inline-block;
    background: var(--bg-light);
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-light);
    cursor: default;
}

/* ============================================
   Single Post
   ============================================ */
.single-post {
    max-width: 800px;
    margin: 0 auto 60px;
    background: var(--bg);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}

.post-header {
    margin-bottom: 30px;
}

.post-header .post-categories {
    margin-bottom: 16px;
}

.post-header .post-title {
    font-size: 2.2rem;
    line-height: 1.2;
    margin-bottom: 16px;
}

.post-body {
    font-size: 1.1rem;
    line-height: 1.8;
}

.post-body p {
    margin-bottom: 1.2em;
}

.post-body h2 {
    font-size: 1.6rem;
    margin: 2em 0 0.5em;
}

.post-body h3 {
    font-size: 1.3rem;
    margin: 1.5em 0 0.5em;
}

.post-body ul, .post-body ol {
    margin: 1em 0 1em 1.5em;
}

.post-body li {
    margin: 0.5em 0;
}

.post-body code {
    background: var(--bg-light);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Consolas', monospace;
    font-size: 0.9em;
}

.post-body pre {
    background: var(--gray-900);
    color: #f9fafb;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5em 0;
}

.post-body blockquote {
    border-left: 4px solid var(--primary);
    padding: 16px 20px;
    margin: 1.5em 0;
    background: var(--bg-light);
    border-radius: 0 8px 8px 0;
    font-style: italic;
}

.post-featured-image {
    margin: 30px -40px;
}

.post-featured-image img {
    width: 100%;
    height: auto;
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 30px 0;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.post-tags .label {
    font-weight: 600;
    margin-right: 8px;
}

.post-footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

/* ============================================
   Related Posts
   ============================================ */
.related-posts {
    max-width: 800px;
    margin: 0 auto;
}

.related-posts h2 {
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.related-card {
    background: var(--bg);
    border-radius: var(--radius);
    padding: 20px;
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

.related-card:hover {
    transform: translateY(-2px);
}

.related-card img,
.related-card .placeholder {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 12px;
}

.related-card .placeholder {
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.related-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    line-height: 1.4;
}

.related-card .date {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ============================================
   Pagination
   ============================================ */
.pagination-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
    padding-top: 20px;
}

.page-link {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    background: var(--bg);
    color: var(--primary);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    box-shadow: var(--shadow);
    transition: all 0.2s;
}

.page-link:hover {
    background: var(--primary);
    color: white;
}

.page-info {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    background: var(--text);
    color: #d1d5db;
    padding: 40px 0 20px;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-info h3 {
    color: white;
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.footer-copy {
    color: white;
    text-align: right;
    font-size: 0.9rem;
}

.footer-copy a {
    color: white;
    text-decoration: none;
}

.footer-copy a:hover {
    color: white;
    text-decoration: none;
}

.admin-link {
    display: inline-block;
    margin-top: 8px;
    color: #9ca3af;
    text-decoration: none;
    font-size: 0.85rem;
}

.admin-link:hover {
    color: white;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--bg);
    color: var(--text);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.btn:hover {
    background: var(--bg-light);
}

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

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

/* ============================================
   Error Page
   ============================================ */
.error-page {
    text-align: center;
    padding: 80px 20px;
}

.error-page h1 {
    font-size: 6rem;
    color: var(--primary);
    margin-bottom: 20px;
}

.error-page h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.error-page p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: var(--bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.empty-state h2 {
    margin-bottom: 10px;
}

.empty-state p {
    color: var(--text-light);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .blog-layout {
        grid-template-columns: 1fr;
    }
    .blog-sidebar {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        gap: 16px;
    }
    .single-post {
        padding: 24px;
    }
    .post-header .post-title {
        font-size: 1.6rem;
    }
    .post-featured-image {
        margin: 20px -24px;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
    .footer-copy {
        text-align: center;
    }
}