/* ===== Articles Page Styles ===== */

/* Article Page Body */
.article-page {
    background: var(--color-bg);
}

/* Article Container */
.article-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 2rem;
}

/* Article Content */
.article-content {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.article-header {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: white;
    padding: 2rem;
}

.breadcrumb {
    font-size: 0.85rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

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

.breadcrumb a:hover {
    text-decoration: underline;
}

.article-header h1 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.9rem;
    opacity: 0.9;
}

.article-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Article Body */
.article-body {
    padding: 2rem;
}

.article-body section {
    margin-bottom: 2rem;
}

.article-body h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-accent-dark);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-light-gray);
}

.article-body p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.article-body code {
    background: var(--color-light-gray);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    color: var(--color-accent-dark);
}

/* Keep embedded article images responsive and inside content cards */
.article-body img,
.article-body picture img,
.article-body figure img,
.article-body .opening-section img,
.article-body .opening-section.featured img {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    box-sizing: border-box;
}

.opening-tip {
    background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
    border-left: 4px solid var(--color-success);
    padding: 1rem 1.25rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-top: 1rem;
    font-size: 0.95rem;
}

[data-theme="dark"] .opening-tip {
    background: linear-gradient(135deg, #1b3d1b 0%, #2e5a2e 100%);
}

.opening-section.featured {
    background: linear-gradient(135deg, #fff8e1 0%, #ffecb3 100%);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 2px solid #ffd54f;
}

[data-theme="dark"] .opening-section.featured {
    background: linear-gradient(135deg, #3d3520 0%, #4d4020 100%);
    border-color: #bf8f00;
}

.intro {
    font-size: 1.1rem;
    border-left: 4px solid var(--color-accent);
    padding-left: 1.5rem;
    background: var(--color-bg);
    padding: 1.5rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Conclusion CTA */
.conclusion {
    text-align: center;
    padding: 2rem;
    background: var(--color-bg);
    border-radius: var(--radius-md);
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
}

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

.cta-btn.primary:hover {
    background: #43a047;
    transform: translateY(-2px);
}

.cta-btn.secondary {
    background: var(--color-info);
    color: white;
}

.cta-btn.secondary:hover {
    background: #1976d2;
    transform: translateY(-2px);
}

/* Article Footer */
.article-footer {
    padding: 2rem;
    background: var(--color-bg);
    border-top: 1px solid var(--color-light-gray);
}

.share-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.share-buttons {
    display: flex;
    gap: 0.5rem;
}

.share-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    font-weight: 700;
    color: white;
    transition: transform 0.2s;
}

.share-btn:hover {
    transform: scale(1.1);
}

.share-btn.twitter { background: #000; }
.share-btn.facebook { background: #1877f2; }
.share-btn.reddit { background: #ff4500; }

.related-articles h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.related-articles ul {
    list-style: none;
    padding: 0;
}

.related-articles li {
    margin-bottom: 0.5rem;
}

.related-articles a {
    color: var(--color-accent-dark);
    text-decoration: none;
    transition: color 0.2s;
}

.related-articles a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

/* Article Sidebar */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar-section {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    box-shadow: var(--shadow-sm);
}

.sidebar-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-light-gray);
}

.sidebar-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-section li {
    margin-bottom: 0.5rem;
}

.sidebar-section a {
    color: var(--color-dark-gray);
    text-decoration: none;
    font-size: 0.9rem;
    display: block;
    padding: 0.35rem 0;
    transition: color 0.2s;
}

.sidebar-section a:hover {
    color: var(--color-accent);
}

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

.toc li {
    padding-left: 0;
}

/* ===== Sidemenu for Main Page ===== */
.sidemenu {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.sidemenu-toggle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidemenu-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(181, 136, 99, 0.4);
}

.sidemenu-toggle.active {
    background: var(--color-text);
}

.sidemenu-panel {
    position: absolute;
    bottom: 70px;
    right: 0;
    width: 280px;
    max-height: 400px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.sidemenu-panel.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.sidemenu-header {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: white;
    padding: 1rem 1.25rem;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidemenu-content {
    max-height: 320px;
    overflow-y: auto;
    padding: 0.5rem 0;
}

.sidemenu-category {
    padding: 0.5rem 1.25rem;
}

.sidemenu-category h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-dark-gray);
    margin-bottom: 0.5rem;
}

.sidemenu-link {
    display: block;
    padding: 0.5rem 0;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    padding-left: 0.75rem;
    margin-left: -0.75rem;
}

.sidemenu-link:hover {
    color: var(--color-accent);
    border-left-color: var(--color-accent);
    background: var(--color-bg);
}

.sidemenu-link .link-icon {
    margin-right: 0.5rem;
}

.sidemenu-divider {
    height: 1px;
    background: var(--color-light-gray);
    margin: 0.5rem 1.25rem;
}

/* Responsive */
@media (max-width: 992px) {
    .article-container {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    
    .article-sidebar {
        order: -1;
    }
    
    .article-header h1 {
        font-size: 1.5rem;
    }
}

@media (max-width: 576px) {
    .article-container {
        padding: 0.5rem;
    }
    
    .article-header {
        padding: 1.25rem;
    }
    
    .article-body {
        padding: 1.25rem;
    }
    
    .article-meta {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .sidemenu-panel {
        width: calc(100vw - 40px);
        right: -10px;
    }
}

/* ===== Articles Index Page ===== */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.article-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
    text-decoration: none;
    display: block;
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.article-card-image {
    height: 160px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
}

.article-card-content {
    padding: 1.25rem;
}

.article-card h3 {
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.article-card p {
    font-size: 0.9rem;
    color: var(--color-dark-gray);
    line-height: 1.5;
}

.article-card-meta {
    display: flex;
    gap: 1rem;
    margin-top: 0.75rem;
    font-size: 0.8rem;
    color: var(--color-medium-gray);
}

/* Chess Tips Grid - 3x2 on desktop */
#chess-tips .seo-grid {
    grid-template-columns: repeat(3, 1fr);
}

@media (max-width: 992px) {
    #chess-tips .seo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    #chess-tips .seo-grid {
        grid-template-columns: 1fr;
    }
}