/*
 * Mito Blog Styles
 * Clean, modern blog design
 */

/* ========================================
   CSS Variables
======================================== */
:root {
    /* Colors */
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fa;
    --color-text: #1a1a2e;
    --color-text-muted: #6c757d;
    --color-primary: #4361ee;
    --color-primary-dark: #3a56d4;
    --color-border: #e9ecef;
    --color-accent: #0891b2;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Merriweather', Georgia, serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 720px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}


/* ========================================
   Reset & Base
======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}


/* ========================================
   Layout
======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.site-main {
    flex: 1;
    padding: var(--space-2xl) 0;
}


/* ========================================
   Header
======================================== */
.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.site-logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-text);
}

.site-logo:hover {
    color: var(--color-primary);
}

.site-nav {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.9rem;
}

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


/* ========================================
   Footer
======================================== */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--space-xl) 0;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}


/* ========================================
   Featured Article
======================================== */
.featured-section {
    margin-bottom: var(--space-3xl);
}

.featured-article {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.featured-image {
    display: block;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.featured-image-placeholder {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-content {
    color: white;
    font-size: 3rem;
    opacity: 0.5;
}

.placeholder-icon {
    font-size: 4rem;
    opacity: 0.3;
    color: white;
}

.featured-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.featured-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.2;
}

.featured-title a {
    color: var(--color-text);
}

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

.featured-excerpt {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    line-height: 1.7;
}

.featured-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.read-more {
    display: inline-block;
    font-weight: 600;
    margin-top: var(--space-sm);
}


/* ========================================
   Article Hub Badge
======================================== */
.article-hub {
    display: inline-block;
    width: fit-content;
    background: var(--color-primary);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    letter-spacing: 0.5px;
}

.article-hub-small {
    font-size: 0.65rem;
    padding: 2px 6px;
}


/* ========================================
   Tags
======================================== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag {
    background: var(--color-bg-alt);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 4px;
}


/* ========================================
   Recent Articles Grid
======================================== */
.recent-section {
    margin-top: var(--space-3xl);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--color-border);
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.article-grid-small {
    grid-template-columns: repeat(3, 1fr);
}

.article-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
    transition: box-shadow var(--transition-normal), transform var(--transition-normal);
}

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

.card-image {
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

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

.card-image-placeholder {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    line-height: 1.3;
}

.card-title a {
    color: var(--color-text);
}

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

.card-excerpt {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

.card-date {
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.section-footer {
    margin-top: var(--space-xl);
    text-align: center;
}

.view-all {
    font-weight: 600;
}


/* ========================================
   Article List (Archive Page)
======================================== */
.page-header {
    margin-bottom: var(--space-xl);
    text-align: center;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
}

.page-subtitle {
    color: var(--color-text-muted);
    margin-top: var(--space-sm);
}

/* Articles Toolbar */
.articles-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) 0;
    margin-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.toolbar-left,
.toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

/* View Toggle */
.view-toggle {
    display: flex;
    gap: var(--space-xs);
    background: var(--color-bg-alt);
    padding: 4px;
    border-radius: 6px;
}

.view-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 32px;
    border: none;
    background: transparent;
    border-radius: 4px;
    cursor: pointer;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.view-btn:hover {
    color: var(--color-text);
    background: var(--color-bg);
}

.view-btn.active {
    color: var(--color-primary);
    background: var(--color-bg);
    box-shadow: var(--shadow-sm);
}

/* Toolbar Controls */
.toolbar-control {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.toolbar-control label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.toolbar-select {
    padding: 6px 12px;
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-bg);
    color: var(--color-text);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.toolbar-select:hover {
    border-color: var(--color-primary);
}

.toolbar-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.1);
}

/* Hidden utility */
.hidden {
    display: none !important;
}

/* Archive Card Grid */
.article-grid-archive {
    grid-template-columns: repeat(3, 1fr);
}

.article-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.article-list-item {
    display: flex;
    gap: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
}

.article-list-item .list-item-image {
    flex-shrink: 0;
    width: 200px;
}

.list-item-image {
    display: block;
    border-radius: 8px;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}

.list-item-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.list-item-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    flex: 1;
    min-width: 0;
}

.list-item-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.list-item-title a {
    color: var(--color-text);
}

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

.list-item-excerpt {
    color: var(--color-text-muted);
    line-height: 1.6;
}

.list-item-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-top: auto;
}


/* ========================================
   Pagination
======================================== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
}

.pagination-link {
    font-weight: 500;
}

.pagination-disabled {
    color: var(--color-text-muted);
    opacity: 0.5;
    pointer-events: none;
}

.pagination-pages {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.pagination-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--space-sm);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.pagination-page:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

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

.pagination-current:hover {
    color: white;
}

.pagination-ellipsis {
    color: var(--color-text-muted);
    padding: 0 var(--space-xs);
}


/* ========================================
   Single Article Page
======================================== */
.article-page {
    margin-bottom: var(--space-3xl);
}

.article-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.article-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-top: var(--space-md);
}

.article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
    color: var(--color-text-muted);
}

.article-hero {
    margin-bottom: var(--space-2xl);
}

.hero-image {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
    border-radius: 12px;
}

.article-body {
    margin-bottom: var(--space-2xl);
}

.article-footer {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.back-link {
    font-weight: 500;
}


/* ========================================
   Prose (Article Content)
======================================== */
.prose {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    line-height: 1.8;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
    font-family: var(--font-sans);
    font-weight: 700;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

.prose h1 { font-size: 2rem; }
.prose h2 { font-size: 1.5rem; }
.prose h3 { font-size: 1.25rem; }
.prose h4 { font-size: 1.1rem; }

.prose p {
    margin-bottom: var(--space-lg);
}

.prose ul, .prose ol {
    margin-bottom: var(--space-lg);
    padding-left: var(--space-xl);
}

.prose li {
    margin-bottom: var(--space-sm);
}

.prose blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--space-lg);
    margin: var(--space-xl) 0;
    font-style: italic;
    color: var(--color-text-muted);
}

.prose code {
    background: var(--color-bg-alt);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

.prose pre {
    background: var(--color-bg-alt);
    padding: var(--space-lg);
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: var(--space-lg);
}

.prose pre code {
    background: none;
    padding: 0;
}

.prose a {
    color: var(--color-primary);
    text-decoration: underline;
}

.prose img {
    border-radius: 8px;
    margin: var(--space-xl) 0;
}

.prose strong {
    font-weight: 700;
}


/* ========================================
   Related Articles
======================================== */
.related-section {
    background: var(--color-bg-alt);
    padding: var(--space-2xl) 0;
}

.article-card-small .card-content {
    padding: var(--space-md);
}


/* ========================================
   Empty & Error States
======================================== */
.empty-state, .error-page {
    text-align: center;
    padding: var(--space-3xl) 0;
}

.empty-state h2, .error-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.empty-state p, .error-message {
    color: var(--color-text-muted);
}

.error-link {
    display: inline-block;
    margin-top: var(--space-lg);
    font-weight: 500;
}


/* ========================================
   Responsive
======================================== */
@media (max-width: 1024px) {
    .featured-article {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .article-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .article-grid-archive {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .featured-title {
        font-size: 1.5rem;
    }

    .article-grid {
        grid-template-columns: 1fr;
    }

    .article-grid-small {
        grid-template-columns: 1fr;
    }

    .article-grid-archive {
        grid-template-columns: repeat(2, 1fr);
    }

    .article-list-item {
        flex-direction: column;
    }

    .article-list-item .list-item-image {
        width: 100%;
        aspect-ratio: 16 / 9;
    }

    .article-title {
        font-size: 1.75rem;
    }

    .site-nav {
        gap: var(--space-md);
    }

    .nav-link {
        font-size: 0.85rem;
    }

    /* Toolbar responsive */
    .articles-toolbar {
        flex-wrap: wrap;
        gap: var(--space-md);
    }

    .toolbar-right {
        flex-wrap: wrap;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-md);
    }

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

    .article-title {
        font-size: 1.5rem;
    }

    .prose {
        font-size: 1rem;
    }

    .article-grid-archive {
        grid-template-columns: 1fr;
    }

    .articles-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-left,
    .toolbar-right {
        justify-content: center;
    }
}