/* Shared Article CSS Styles */
:root {
    --bg-dark: #080a0c;
    --surface-dark: #11141a;
    --surface-card: #161b22;
    --border-color: #212833;
    --border-hover: #303b4b;
    --text-primary: #f0f3f6;
    --text-secondary: #adb6c4;
    --text-muted: #8e98a6;
    --accent: #0284c7;
    --accent-hover: #0369a1;
    --accent-glow: rgba(2, 132, 199, 0.15);
    --success: #198754;
    --font-ui: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', "Fira Code", monospace;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-ui);
    line-height: 1.7;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: #38bdf8;
    text-decoration: underline;
}

/* Header */
.site-header {
    background-color: var(--surface-dark);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.header-brand:hover {
    text-decoration: none;
}

.brand-logo {
    height: 40px;
    width: auto;
}

.brand-name {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-btn-primary {
    background-color: var(--accent);
    color: #ffffff !important;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.875rem;
    transition: background-color 0.2s ease;
    text-decoration: none !important;
}

.nav-btn-primary:hover {
    background-color: var(--accent-hover);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

.nav-link:hover {
    color: var(--text-primary);
    text-decoration: none;
}

/* Article Container */
.article-wrapper {
    max-width: 900px;
    margin: 2.5rem auto;
    padding: 0 1.5rem;
    flex: 1;
}

.article-header {
    margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 2rem;
}

.article-category {
    display: inline-block;
    background-color: var(--accent-glow);
    color: var(--accent);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.article-title {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: #ffffff;
}

.article-meta {
    display: flex;
    gap: 1.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Content Typography */
.article-content h2 {
    font-size: 1.6rem;
    font-weight: 700;
    color: #ffffff;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #e2e8f0;
    margin: 1.75rem 0 0.75rem;
}

.article-content p {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
}

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

.article-content ul, .article-content ol {
    margin: 1rem 0 1.5rem 1.75rem;
    color: var(--text-secondary);
}

.article-content li {
    margin-bottom: 0.5rem;
}

/* Callout Box */
.callout-box {
    background-color: var(--surface-card);
    border-left: 4px solid var(--accent);
    border-radius: 0 8px 8px 0;
    padding: 1.25rem 1.5rem;
    margin: 1.75rem 0;
}

.callout-box p {
    margin-bottom: 0;
}

/* Comparison Table */
.table-responsive {
    overflow-x: auto;
    margin: 2rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--surface-card);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

th, td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--surface-dark);
    color: #ffffff;
    font-weight: 600;
    font-size: 0.95rem;
}

td {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* FAQ Box */
.faq-section {
    margin-top: 3rem;
}

.faq-item {
    background-color: var(--surface-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.faq-question {
    font-size: 1.1rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.faq-answer {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* CTA Card */
.cta-card {
    background: linear-gradient(135deg, var(--surface-card) 0%, rgba(2, 132, 199, 0.1) 100%);
    border: 1px solid var(--accent);
    border-radius: 12px;
    padding: 2.5rem;
    text-align: center;
    margin: 3rem 0 2rem;
}

.cta-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.75rem;
}

.cta-desc {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 1.5rem;
    font-size: 1.05rem;
}

.cta-btn {
    display: inline-block;
    background-color: var(--accent);
    color: #ffffff !important;
    padding: 0.85rem 2rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: transform 0.2s ease, background-color 0.2s ease;
    text-decoration: none !important;
}

.cta-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

/* Footer */
.site-footer {
    background-color: var(--surface-dark);
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
}

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

/* Articles Directory Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2.5rem 0;
}

.article-card {
    background-color: var(--surface-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.article-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.article-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.article-card-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
    flex: 1;
}

.article-card-link {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

@media (max-width: 768px) {
    .site-header {
        padding: 0.75rem 1rem;
    }
    .article-title {
        font-size: 1.75rem;
    }
    .cta-card {
        padding: 1.5rem;
    }
}