/*
 * VeriMimari Theme - Main Stylesheet
 * Comprehensive styles for academic blog theme
 */

/* ===== LAYOUT & STRUCTURE ===== */

.site-content {
    display: flex;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-lg);
    gap: var(--spacing-3xl);
}

.site-main {
    flex: 1;
    min-width: 0;
}

.widget-area {
    flex: 0 0 300px;
}

/* ===== HEADER STYLES ===== */

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.search-toggle,
.dark-mode-toggle {
    background: none;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-toggle:hover,
.dark-mode-toggle:hover {
    color: var(--color-primary);
}

.dark-mode-toggle .moon-icon {
    display: none;
}

body.dark-mode .dark-mode-toggle .sun-icon {
    display: none;
}

body.dark-mode .dark-mode-toggle .moon-icon {
    display: block;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
}

.menu-toggle-icon {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-primary);
    position: relative;
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.menu-toggle-icon::before {
    top: -8px;
}

.menu-toggle-icon::after {
    bottom: -8px;
}

/* Search Modal */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.search-modal-content {
    position: relative;
    width: 100%;
    max-width: 600px;
}

.search-form {
    display: flex;
    gap: var(--spacing-sm);
}

.search-field {
    flex: 1;
    padding: var(--spacing-lg);
    font-size: var(--font-size-lg);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    background-color: var(--color-light-surface);
}

.search-submit {
    padding: var(--spacing-lg);
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

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

.search-close {
    position: absolute;
    top: -50px;
    right: 0;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    padding: var(--spacing-sm);
}

/* ===== HOMEPAGE STYLES ===== */

.hero-section {
    background: linear-gradient(135deg, rgba(87, 166, 57, 0.05) 0%, rgba(208, 122, 33, 0.05) 100%);
    padding: var(--spacing-3xl) 0;
    margin-bottom: var(--spacing-3xl);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary) 70%, var(--color-secondary) 30%);
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.hero-content {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.hero-title {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.featured-posts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.featured-post-card {
    background-color: var(--color-light-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
}

.featured-post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 70%, var(--color-secondary) 30%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.featured-post-card:hover::before {
    transform: scaleX(1);
}

.featured-post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

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

.featured-post-content {
    padding: var(--spacing-lg);
}

.post-categories {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.post-categories a {
    font-family: var(--font-heading);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: rgba(87, 166, 57, 0.1);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.post-categories a:hover {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
}

.featured-post-title a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

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

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

.post-meta {
    display: flex;
    gap: var(--spacing-lg);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    font-family: var(--font-heading);
}

/* Category Blocks */
.category-blocks {
    margin-bottom: var(--spacing-3xl);
}

.category-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.category-block {
    margin-bottom: var(--spacing-3xl);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-light-border);
    position: relative;
}

.category-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary) 70%, var(--color-secondary) 30%);
}

.category-title {
    font-size: var(--font-size-2xl);
    margin: 0;
}

.category-title a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

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

.view-all {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.view-all:hover {
    color: var(--color-primary-dark);
}

.category-posts {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.category-post-card {
    background-color: var(--color-light-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--color-light-border);
}

.category-post-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-primary);
}

.category-post-card .post-thumbnail img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.category-post-card .post-content {
    padding: var(--spacing-md);
}

.category-post-card .post-title {
    font-size: var(--font-size-base);
    margin: 0 0 var(--spacing-sm) 0;
}

.category-post-card .post-title a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

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

/* ===== POST GRID ===== */

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.post-card {
    background-color: var(--color-light-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-light-border);
    position: relative;
}

.post-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 70%, var(--color-secondary) 30%);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.post-card:hover::after {
    transform: scaleX(1);
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

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

.post-card-image img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.post-card-content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-card-title {
    font-size: var(--font-size-xl);
    margin: 0 0 var(--spacing-md) 0;
}

.post-card-title a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

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

.post-card-excerpt {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.post-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    font-family: var(--font-heading);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-light-border);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.meta-item img {
    border-radius: 50%;
}

/* ===== SINGLE POST LAYOUT ===== */

.single-post-layout {
    max-width: 1400px;
    margin: 0 auto;
}

.breadcrumb-wrapper {
    margin-bottom: var(--spacing-xl);
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    list-style: none;
    margin: 0;
    padding: 0;
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.breadcrumb-list li:not(:last-child)::after {
    content: '→';
    color: var(--color-text-tertiary);
}

.breadcrumb-list a {
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.entry-header {
    margin-bottom: var(--spacing-3xl);
}

.entry-title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.entry-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-light-border);
}

.author-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.author-meta img {
    border-radius: 50%;
}

.author-name {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-text-primary);
}

.date-meta,
.reading-time,
.categories-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.featured-image {
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

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

/* Abstract Section */
.article-abstract {
    background-color: rgba(87, 166, 57, 0.05);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border-radius: var(--radius-md);
}

.article-abstract h3 {
    margin-top: 0;
    color: var(--color-primary);
    font-size: var(--font-size-lg);
}

/* Entry Content with TOC */
.entry-content-wrapper {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.table-of-contents {
    position: relative;
}

.toc-sticky {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-lg));
    background-color: var(--color-light-surface);
    border: 1px solid var(--color-light-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    max-height: calc(100vh - var(--header-height) - var(--spacing-3xl));
    overflow-y: auto;
}

.toc-title {
    font-size: var(--font-size-base);
    margin: 0 0 var(--spacing-md) 0;
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-primary);
}

.toc-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.toc-nav li {
    margin-bottom: var(--spacing-sm);
}

.toc-nav a {
    color: var(--color-text-secondary);
    font-family: var(--font-heading);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.toc-nav a:hover,
.toc-nav a.active {
    color: var(--color-primary);
    background-color: rgba(87, 166, 57, 0.1);
}

.entry-content {
    max-width: var(--content-width);
}

.entry-content>* {
    margin-bottom: var(--spacing-lg);
}

.entry-content h2,
.entry-content h3,
.entry-content h4 {
    position: relative;
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

.entry-content h2::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 70%, var(--color-secondary) 30%);
}

/* Entry Footer */
.entry-footer {
    margin-top: var(--spacing-3xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--color-light-border);
}

.article-keywords,
.article-doi,
.tags-links {
    margin-bottom: var(--spacing-lg);
    font-family: var(--font-heading);
}

.share-buttons {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.share-label {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-text-secondary);
}

.social-share {
    display: flex;
    gap: var(--spacing-sm);
}

.share-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--color-light-border);
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

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

.share-twitter:hover {
    background-color: #1DA1F2;
    color: white;
}

.share-linkedin:hover {
    background-color: #0077B5;
    color: white;
}

.share-facebook:hover {
    background-color: #1877F2;
    color: white;
}

.share-email:hover {
    background-color: var(--color-primary);
    color: white;
}

/* Author Bio Box */
.author-bio-box {
    display: flex;
    gap: var(--spacing-lg);
    background-color: rgba(87, 166, 57, 0.05);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-3xl);
    border: 1px solid rgba(87, 166, 57, 0.2);
}

.author-bio-avatar img {
    border-radius: 50%;
}

.author-bio-content {
    flex: 1;
}

.author-bio-name {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-xl);
}

.author-bio-name a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

.author-bio-name a:hover {
    color: var(--color-primary);
}

.author-bio-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.author-bio-link {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-primary);
    transition: color var(--transition-fast);
}

.author-bio-link:hover {
    color: var(--color-primary-dark);
}

/* Related Posts */
.related-posts {
    margin-top: var(--spacing-3xl);
}

.related-posts-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.related-posts-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 70%, var(--color-secondary) 30%);
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.related-post-card {
    background-color: var(--color-light-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--color-light-border);
}

.related-post-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-primary);
}

.related-post-image img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.related-post-content {
    padding: var(--spacing-md);
}

.related-post-title {
    font-size: var(--font-size-base);
    margin: 0 0 var(--spacing-sm) 0;
}

.related-post-title a {
    color: var(--color-text-primary);
    transition: color var(--transition-fast);
}

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

/* ===== FOOTER STYLES ===== */

.site-footer {
    background-color: var(--color-dark-bg);
    color: var(--color-text-inverse);
    margin-top: var(--spacing-3xl);
}

.footer-widgets {
    padding: var(--spacing-3xl) 0;
    border-bottom: 1px solid var(--color-dark-border);
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-columns {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-3xl);
}

.footer-column .widget-title {
    color: var(--color-text-inverse);
    font-size: var(--font-size-lg);
}

.footer-column .widget-title::after {
    background: linear-gradient(90deg, var(--color-primary) 70%, var(--color-secondary) 30%);
}

.footer-column a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-column a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    padding: var(--spacing-xl) 0;
}

.footer-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.site-info {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

.site-info a {
    color: var(--color-primary);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-text-inverse);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background-color: var(--color-primary);
    transform: translateY(-2px);
}

.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-4px);
}

/* ===== PAGINATION ===== */

.pagination {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-3xl);
    font-family: var(--font-heading);
}

.page-numbers {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-light-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.page-numbers:hover,
.page-numbers.current {
    background-color: var(--color-primary);
    color: var(--color-text-inverse);
    border-color: var(--color-primary);
}

/* ===== RESPONSIVE DESIGN ===== */

@media (max-width: 1024px) {
    .entry-content-wrapper {
        grid-template-columns: 1fr;
    }

    .table-of-contents {
        order: -1;
    }

    .toc-sticky {
        position: static;
        max-height: none;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 60px;
        --logo-height: 35px;
    }

    .main-navigation {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-light-surface);
        border-top: 1px solid var(--color-light-border);
        box-shadow: var(--shadow-lg);
    }

    .main-navigation.active {
        display: block;
    }

    .main-navigation ul {
        flex-direction: column;
        padding: var(--spacing-lg);
    }

    .menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .posts-grid,
    .featured-posts,
    .category-posts {
        grid-template-columns: 1fr;
    }

    .site-content {
        flex-direction: column;
    }

    .widget-area {
        flex: 1;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .entry-title {
        font-size: var(--font-size-2xl);
    }

    .entry-meta {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .author-bio-box {
        flex-direction: column;
        text-align: center;
    }
}