/* Copyright (C) 2026 JSLY
 * SPDX-License-Identifier: AGPL-3.0-or-later */

.article-hero-placeholder {
    height: 300px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    padding: 20px;
}

.article-detail .article-hero {
    height: 300px;
    overflow: hidden;
    border-radius: 10px;
    margin-bottom: 20px;
    background: white;
}

.article-detail .article-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-body {
    flex: 1;
    min-width: 0;
    padding: 25px 35px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.article-body > h2 {
    margin-bottom: 16px;
}

.article-detail .article-meta {
    display: flex;
    gap: 20px;
    color: var(--gray);
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 15px;
}

.article-detail .article-content {
    line-height: 1.8;
    padding: 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3 {
    margin-top: 24px;
    margin-bottom: 12px;
}

.markdown-body h1 { font-size: 1.8rem; }
.markdown-body h2 { font-size: 1.5rem; }
.markdown-body h3 { font-size: 1.25rem; }

.markdown-body p {
    margin-bottom: 16px;
}

.markdown-body ul,
.markdown-body ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.markdown-body li {
    margin-bottom: 6px;
}

.markdown-body code {
    background: var(--light-gray);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

.markdown-body pre {
    background: #f5f5f5;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 16px;
}

.markdown-body pre code {
    background: none;
    padding: 0;
    font-family: 'Fira Code', 'Consolas', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
}

.markdown-body pre code * {
    font-family: inherit;
}

.markdown-body pre {
    position: relative;
}

.markdown-body blockquote {
    border-left: 4px solid var(--primary);
    padding-left: 16px;
    color: var(--gray);
    margin-bottom: 16px;
}

.markdown-body img {
    max-width: 100%;
    border-radius: 8px;
    margin-bottom: 16px;
}

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

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

.markdown-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

.article-actions {
    margin-top: 30px;
    display: flex;
    gap: 15px;
}

.article-layout {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.article-toc-sidebar {
    width: 220px;
    flex-shrink: 0;
    position: sticky;
    top: 10px;
    max-height: calc(90vh - 60px);
    overflow-y: auto;
    background: white;
    border-radius: 10px;
    padding: 16px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}

.article-toc-sidebar:empty {
    display: none;
}

.article-toc-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.article-toc-item {
    margin-bottom: 2px;
}

.article-toc-item a {
    color: var(--gray);
    font-size: 0.85rem;
    text-decoration: none;
    transition: var(--transition);
    display: block;
    padding: 4px 8px;
    border-radius: 4px;
    line-height: 1.4;
}

.article-toc-item a:hover {
    color: var(--primary);
    background: var(--light);
}

.article-toc-item a.active {
    color: var(--primary);
    font-weight: 600;
    background: var(--light);
    border-left: 2px solid var(--primary);
    border-radius: 0 4px 4px 0;
}

.article-comments {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.article-comments giscus-widget {
    width: 100%;
}

#article-page {
    max-width: 1100px;
    margin: 0 auto;
    padding: 40px 20px 60px;
}

.back-to-blog {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    padding: 10px 20px;
    background: var(--primary);
    color: #fff;
    text-decoration: none;
    font-size: 0.95rem;
    border-radius: 8px;
    transition: var(--transition);
}

.back-to-blog:hover {
    background: var(--primary-dark);
    color: #fff;
}

#article-page .article-toc-sidebar {
    top: 80px;
    max-height: calc(100vh - 120px);
}

.dark-mode .article-hero-placeholder {
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.dark-mode .article-detail .article-hero,
.dark-mode .article-detail .article-toc-sidebar,
.dark-mode .article-detail .article-body {
    background: var(--light);
}

.dark-mode #article-page .article-toc-sidebar,
.dark-mode #article-page .article-body {
    background: var(--light);
}

.dark-mode .article-detail .article-hero,
.dark-mode .article-detail .article-toc-sidebar,
.dark-mode .article-detail .article-body,
.dark-mode #article-page .article-toc-sidebar,
.dark-mode #article-page .article-body {
    box-shadow: 0 4px 20px rgba(0,0,0,0.35);
}

.dark-mode .markdown-body code {
    background: var(--light-gray);
}

.dark-mode .markdown-body pre code {
    background: none;
}

.dark-mode .markdown-body pre {
    background: #0d0d1a;
    color: #c9d1d9;
}

.markdown-body pre code [class^="hljs-"] {
    font-family: inherit;
}

.markdown-body pre code .hljs-built_in,
.markdown-body pre code .hljs-symbol {
    color: inherit;
}

.dark-mode .article-toc-sidebar a:hover {
    background: var(--light-gray);
}

/* Series navigation */
.series-nav-top {
    background: var(--light-gray);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 24px;
    border: 1px solid var(--border);
}

.series-nav-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--dark);
}

.series-nav-header i {
    color: var(--primary);
}

.series-nav-count {
    margin-left: auto;
    font-size: 0.85rem;
    color: var(--gray);
    font-weight: 400;
}

.series-nav-list ol {
    list-style: none;
    padding: 0;
    margin: 0;
}

.series-nav-list li {
    padding: 6px 12px;
    font-size: 0.9rem;
    border-radius: 6px;
    transition: var(--transition);
}

.series-nav-list li + li {
    border-top: 1px solid var(--border);
}

.series-nav-list li.current {
    font-weight: 600;
    color: var(--primary);
    background: rgba(102, 187, 106, 0.08);
}

.series-nav-list li a {
    color: var(--dark);
    text-decoration: none;
    transition: var(--transition);
}

.series-nav-list li a:hover {
    color: var(--primary);
}

.series-nav-list .series-num {
    margin-right: 4px;
    opacity: 0.6;
}

.series-nav-bottom {
    margin-bottom: 30px;
    padding-bottom: 6px;
}

.series-nav-bottom-inner {
    display: flex;
    justify-content: space-between;
    gap: 16px;
}

.series-nav-prev,
.series-nav-next {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: var(--light-gray);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-decoration: none;
    color: var(--dark);
    font-size: 0.9rem;
    transition: var(--transition);
    max-width: 45%;
    line-height: 1.4;
}

.series-nav-prev:hover,
.series-nav-next:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.series-nav-next {
    margin-left: auto;
    text-align: right;
}

.dark-mode .series-nav-top {
    background: var(--light-gray);
    border-color: var(--border);
}

.dark-mode .series-nav-list li a {
    color: var(--dark);
}

.dark-mode .series-nav-list li.current {
    background: rgba(102, 187, 106, 0.15);
}

.dark-mode .series-nav-prev,
.dark-mode .series-nav-next {
    background: var(--light-gray);
    border-color: var(--border);
    color: var(--dark);
}

.dark-mode .series-nav-prev:hover,
.dark-mode .series-nav-next:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

@media (max-width: 600px) {
    .series-nav-bottom-inner {
        flex-direction: column;
    }
    .series-nav-prev,
    .series-nav-next {
        max-width: 100%;
    }
    .series-nav-next {
        margin-left: 0;
        text-align: left;
    }
}

@media (max-width: 992px) {
    .article-layout {
        flex-direction: column;
        gap: 0;
    }
    .close-modal {
        top: 5.5px;
    }
    .article-toc-sidebar {
        width: 100%;
        position: static;
        max-height: none;
        margin-bottom: 20px;
        padding: 12px 16px;
        padding-right: 45px;
        background: var(--light);
        border: 1px solid var(--border);
        border-radius: 8px;
    }
    .article-toc-title {
        cursor: pointer;
        user-select: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 0;
    }
    .toc-chevron {
        transition: transform 0.3s ease;
        font-size: 0.75rem;
        opacity: 0.6;
    }
    .article-toc.collapsed .article-toc-list {
        display: none;
    }
    .article-toc.collapsed .toc-chevron {
        transform: rotate(-90deg);
    }
    .article-toc:not(.collapsed) .article-toc-title {
        margin-bottom: 10px;
    }

    .article-toc-item a {
        padding: 4px 0;
    }
    .article-toc-item a:hover {
        background: none;
    }
    .dark-mode .article-toc-sidebar {
        background: var(--light-gray);
    }
}

/* 404 not-found page */
.not-found {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.not-found-code {
    font-size: 8rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 8px;
    opacity: 0.7;
    user-select: none;
}

.not-found-icon {
    font-size: 3.5rem;
    color: var(--primary);
    margin-bottom: 20px;
    opacity: 0.5;
}

.not-found h1 {
    font-size: 2rem;
    margin-bottom: 16px;
    color: var(--dark);
}

.not-found-message {
    color: var(--gray);
    font-size: 1.1rem;
    margin-bottom: 32px;
    line-height: 1.6;
}

.not-found-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 48px;
}

.not-found-actions .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(102, 187, 106, 0.3);
}

.not-found-suggestions {
    text-align: left;
    max-width: 380px;
    margin: 0 auto;
}

.not-found-suggestions h3 {
    font-size: 1rem;
    color: var(--gray);
    margin-bottom: 12px;
    text-align: center;
    font-weight: 500;
}

.not-found-suggestions ul {
    list-style: none;
    padding: 0;
}

.not-found-suggestions li {
    margin-bottom: 8px;
}

.not-found-suggestions a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--dark);
    background: var(--light);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.not-found-suggestions a:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: white;
}

.dark-mode .not-found-suggestions a {
    background: var(--light-gray);
    border-color: transparent;
}

.dark-mode .not-found-suggestions a:hover {
    border-color: var(--primary);
    background: var(--light);
}

/* Code block copy button */
.code-copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255,255,255,0.9);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 10px;
    font-size: 0.75rem;
    cursor: pointer;
    color: var(--gray);
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 4px;
    line-height: 1;
}

.markdown-body pre:hover .code-copy-btn {
    opacity: 1;
}

.code-copy-btn.copied {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    opacity: 1;
}

.dark-mode .code-copy-btn {
    background: rgba(50,50,70,0.95);
    border-color: #555;
    color: #ccc;
}

.dark-mode .code-copy-btn:hover {
    background: rgba(70,70,90,0.95);
    color: #fff;
}

.dark-mode .code-copy-btn.copied {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

@media (max-width: 600px) {
    .code-copy-btn {
        opacity: 1;
    }
}

/* Social share buttons */
.share-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.share-btn-platform {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 0 16px;
    border-radius: 20px;
    border: 1px solid var(--border);
    background: white;
    color: var(--dark);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1;
    box-sizing: border-box;
    height: 44px;
}

.share-btn-platform:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.share-btn-copy {
    padding: 0 28px;
    border-radius: 22px;
}

.share-btn-copy,
.dark-mode .share-btn-copy {
    background: #4caf50;
    color: white;
    border-color: #4caf50;
}

.share-btn-copy:hover,
.dark-mode .share-btn-copy:hover {
    background: #388e3c;
    border-color: #388e3c;
}

.share-btn-icon {
    width: 44px;
    padding: 0;
    border-radius: 50%;
    flex-shrink: 0;
    font-size: 1.1rem;
}

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

.share-btn-weibo:hover {
    background: #E6162D;
    color: white;
    border-color: #E6162D;
}

.share-btn-qq:hover {
    background: #12B7F5;
    color: white;
    border-color: #12B7F5;
}

.share-btn-icon:active {
    transform: scale(0.92);
}

.dark-mode .share-btn-platform {
    background: var(--light);
    border-color: var(--border);
}

/* Related articles */
.related-articles-section {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.related-heading {
    font-size: 1.1rem;
    color: var(--dark);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.related-heading i {
    color: var(--primary);
}

.related-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.related-article-card {
    display: flex;
    gap: 12px;
    padding: 12px;
    border-radius: 10px;
    background: var(--light);
    border: 1px solid var(--border);
    text-decoration: none;
    transition: var(--transition);
}

.related-article-card:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

.related-image {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
    border-radius: 8px;
    overflow: hidden;
}

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

.related-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: white;
    font-size: 1.5rem;
}

.related-info {
    flex: 1;
    min-width: 0;
}

.related-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.related-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.related-tags .tag {
    font-size: 0.7rem;
    padding: 2px 8px;
}

.dark-mode .related-article-card {
    background: var(--light-gray);
    border-color: var(--border);
}

.dark-mode .related-article-card:hover {
    border-color: var(--primary);
}

@media (max-width: 600px) {
    .share-buttons {
        justify-content: center;
    }
}