/* Blog article shared styles — extends styles.css */

/* Article Layout */
.article-hero {
    background: var(--hero-gradient);
    padding: 50px 0 60px;
    position: relative;
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    top: -40%;
    right: -10%;
    width: 500px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(102,126,234,0.25) 0%, transparent 70%);
    pointer-events: none;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: rgba(255,255,255,0.5);
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.article-breadcrumb a {
    color: rgba(255,255,255,0.6);
    transition: color 0.2s;
}
.article-breadcrumb a:hover { color: #fff; }
.article-breadcrumb span { color: rgba(255,255,255,0.35); }

.article-hero-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: rgba(255,255,255,0.85);
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
}

.article-hero h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #fff;
    letter-spacing: -0.03em;
    line-height: 1.15;
    max-width: 760px;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    color: rgba(255,255,255,0.55);
    font-size: 0.85rem;
    position: relative;
    z-index: 1;
}

.article-meta strong {
    color: rgba(255,255,255,0.8);
    font-weight: 600;
}

/* Article Body */
.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    padding: 60px 0 80px;
    align-items: start;
}

.article-body {
    min-width: 0;
}

.article-body h2 {
    font-size: 1.7rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-top: 48px;
    margin-bottom: 16px;
    color: var(--text-primary);
    scroll-margin-top: 80px;
}

.article-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.article-body p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 1.3rem;
}

.article-body ul,
.article-body ol {
    padding-left: 22px;
    margin: 16px 0 24px;
}

.article-body li {
    font-size: 1.02rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 10px;
}

.article-body li strong {
    color: var(--text-primary);
}

.article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-decoration-color: rgba(0,122,255,0.3);
    text-underline-offset: 3px;
    transition: text-decoration-color 0.2s;
}
.article-body a:hover {
    text-decoration-color: var(--primary);
}

/* Callout boxes */
.callout {
    padding: 20px 24px;
    border-radius: var(--radius-md);
    margin: 28px 0;
    border-left: 4px solid;
}

.callout-tip {
    background: rgba(0,122,255,0.06);
    border-color: var(--primary);
}

.callout-warning {
    background: rgba(255,149,0,0.07);
    border-color: #ff9500;
}

.callout-success {
    background: rgba(52,199,89,0.07);
    border-color: #34c759;
}

.callout-title {
    font-weight: 700;
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
}

.callout-tip .callout-title { color: var(--primary); }
.callout-warning .callout-title { color: #ff9500; }
.callout-success .callout-title { color: #34c759; }

.callout p {
    font-size: 0.97rem !important;
    margin-bottom: 0 !important;
}

/* Step boxes */
.step-grid {
    display: grid;
    gap: 16px;
    margin: 24px 0;
}

.step-box {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.step-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.step-box h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.step-box p {
    font-size: 0.92rem !important;
    margin-bottom: 0 !important;
}

/* Comparison table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
}

.comparison-table th {
    background: var(--accent-gradient);
    color: #fff;
    padding: 12px 16px;
    text-align: left;
    font-weight: 700;
    font-size: 0.88rem;
}

.comparison-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    vertical-align: top;
}

.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tr:nth-child(even) td { background: var(--bg-secondary); }

.check { color: #34c759; font-weight: 700; }
.cross { color: #ff3b30; font-weight: 700; }

/* TOC (table of contents) sidebar */
.article-sidebar {
    position: sticky;
    top: 80px;
}

.toc-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
}

.toc-card h4 {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-bottom: 14px;
}

.toc-card ol {
    padding-left: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toc-card li a {
    font-size: 0.88rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
    display: block;
    padding: 2px 0;
    border-left: 2px solid transparent;
    padding-left: 10px;
    transition: all 0.2s;
}

.toc-card li a:hover {
    color: var(--primary);
    border-left-color: var(--primary);
}

/* App promo card in sidebar */
.app-promo-card {
    background: var(--hero-gradient);
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    color: #fff;
}

.app-promo-card .app-icon-large {
    width: 72px;
    height: 72px;
    border-radius: 18px;
    margin: 0 auto 14px;
    animation: none;
}

.app-promo-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.app-promo-card p {
    font-size: 0.82rem;
    color: rgba(255,255,255,0.65);
    margin-bottom: 16px;
    line-height: 1.4;
}

.app-promo-card .hero-btn-large {
    width: 100%;
    justify-content: center;
    font-size: 0.9rem;
    padding: 12px 20px;
}

/* Related articles */
.related-articles {
    padding: 60px 0 80px;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 32px;
}

.related-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.related-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.related-card-emoji { font-size: 1.5rem; }
.related-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}
.related-card span {
    font-size: 0.82rem;
    color: var(--primary);
    font-weight: 600;
}

@media (max-width: 900px) {
    .article-layout {
        grid-template-columns: 1fr;
    }
    .article-sidebar {
        position: static;
        order: -1;
    }
    .toc-card { display: none; }
    .related-grid { grid-template-columns: 1fr 1fr; }
    .article-hero h1 { font-size: 2rem; }
}

@media (max-width: 600px) {
    .related-grid { grid-template-columns: 1fr; }
    .article-hero h1 { font-size: 1.7rem; }
    .article-body h2 { font-size: 1.4rem; }
}