/* ===================================================
   Article Page Styles - Converter Tool
   =================================================== */

/* Breadcrumb */
.breadcrumb {
    padding: 1rem 0;
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    margin-top: 70px;
}

.breadcrumb ol {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.breadcrumb li {
    display: flex;
    align-items: center;
    font-size: 0.875rem;
    color: var(--gray-500);
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    margin-left: 0.5rem;
    color: var(--gray-400);
}

.breadcrumb a {
    color: var(--gray-600);
    transition: var(--transition);
}

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

.breadcrumb li[aria-current="page"] {
    color: var(--gray-800);
    font-weight: 500;
}

/* Article Layout */
.article-main {
    padding: 3rem 0;
    background: var(--gray-50);
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2rem;
    align-items: start;
}

/* Article Content */
.article-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

.article-header {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
}

.article-category {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.875rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}

.article-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
    margin-bottom: 1rem;
}

.article-header .article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.875rem;
    color: var(--gray-500);
}

.article-header .article-meta span {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

/* Article Body */
.article-body {
    color: var(--gray-700);
    line-height: 1.8;
}

.article-body .lead {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 2.5rem 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.article-body h2 i {
    color: var(--primary);
    font-size: 1.25rem;
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-800);
    margin: 2rem 0 0.75rem;
}

.article-body p {
    margin-bottom: 1.25rem;
}

.article-body a {
    color: var(--primary);
    font-weight: 500;
    text-decoration: underline;
    text-decoration-color: rgba(99, 102, 241, 0.3);
    text-underline-offset: 2px;
    transition: var(--transition);
}

.article-body a:hover {
    text-decoration-color: var(--primary);
}

.article-body strong {
    color: var(--gray-900);
    font-weight: 600;
}

/* Article Image */
.article-image {
    margin: 2rem 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

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

.article-image figcaption {
    padding: 0.75rem 1rem;
    background: var(--gray-50);
    font-size: 0.875rem;
    color: var(--gray-500);
    text-align: center;
}

/* Info Box */
.info-box {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(139, 92, 246, 0.05) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 2rem 0;
}

.info-box h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.info-box p {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--gray-700);
}

/* Highlight Box */
.highlight-box {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(52, 211, 153, 0.05) 100%);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-left: 4px solid var(--secondary);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin: 2rem 0;
}

.highlight-box h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 0.5rem;
}

.highlight-box p {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--gray-700);
}

/* CTA Box */
.cta-box {
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin: 2.5rem 0;
    text-align: center;
}

.cta-box h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.cta-box p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.5rem;
}

.cta-box .cta-btn {
    background: var(--white);
    color: var(--primary);
    padding: 0.875rem 1.75rem;
}

.cta-box .cta-btn:hover {
    background: var(--gray-100);
}

/* Lists */
.numbered-list {
    counter-reset: list-counter;
    list-style: none;
    margin: 1.5rem 0;
}

.numbered-list li {
    counter-increment: list-counter;
    position: relative;
    padding-left: 3rem;
    margin-bottom: 1rem;
}

.numbered-list li::before {
    content: counter(list-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 32px;
    height: 32px;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.check-list {
    margin: 1.5rem 0;
}

.check-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.check-list li i {
    color: var(--secondary);
    margin-top: 0.25rem;
}

.feature-list {
    margin: 1.5rem 0;
}

.feature-list li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
}

.feature-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 600;
}

/* Author Box */
.author-box {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    margin-top: 3rem;
}

.author-avatar {
    flex-shrink: 0;
}

.author-avatar i {
    font-size: 4rem;
    color: var(--primary);
}

.author-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.author-info p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    margin: 0;
}

/* Related Articles */
.related-articles {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

.related-articles h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1.5rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.related-card {
    display: block;
    padding: 1.25rem;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.related-card:hover {
    background: var(--white);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
}

.related-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.related-card h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--gray-800);
    line-height: 1.4;
}

/* Sidebar */
.article-sidebar {
    position: sticky;
    top: 90px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar-widget {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

.sidebar-widget h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--gray-200);
}

.sidebar-widget h3 i {
    color: var(--primary);
}

.sidebar-widget p {
    font-size: 0.9375rem;
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.sidebar-btn {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 0.9375rem;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.sidebar-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* TOC List */
.toc-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toc-list li a {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    font-size: 0.875rem;
    color: var(--gray-600);
    border-radius: var(--radius);
    transition: var(--transition);
}

.toc-list li a:hover {
    background: var(--gray-50);
    color: var(--primary);
}

.toc-list li a i {
    font-size: 0.625rem;
    color: var(--gray-400);
}

/* Categories widget */
.sidebar-widget.categories ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-widget.categories li a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem;
    font-size: 0.875rem;
    color: var(--gray-600);
    border-radius: var(--radius);
    transition: var(--transition);
}

.sidebar-widget.categories li a:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

.sidebar-widget.categories li a i {
    color: var(--primary);
    width: 20px;
    text-align: center;
}

/* Articles Index Page */
.articles-index {
    padding: 4rem 0;
    background: var(--gray-50);
    margin-top: 70px;
}

.articles-index .section-header {
    margin-bottom: 3rem;
}

.articles-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .article-content {
        padding: 1.5rem;
    }

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

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

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

    .article-header .article-meta {
        justify-content: center;
    }

    .articles-list {
        grid-template-columns: 1fr;
    }
}