/* Shared styles for /guides/* — long-form SEO articles.
 *
 * Inherits the dark palette from index.html via duplicated CSS vars (we don't
 * have a shared layer because the site is static HTML). Anything that diverges
 * from the home page is intentional and noted in comments.
 *
 * Reading-optimized changes vs. landing page:
 *   - Wider line-height (1.7 vs 1.55) — long-form reading
 *   - Bigger H1/H2 type scale
 *   - Max 720px text column — avoids line lengths > 80 chars
 *   - Increased contrast on body text (text-0 instead of text-1)
 */

:root {
    --bg-0: #0a0d12;
    --bg-1: #0f1318;
    --bg-2: #161b22;
    --bg-3: #1d242c;
    --border: rgba(255, 255, 255, 0.06);
    --border-strong: rgba(255, 255, 255, 0.1);
    --text-0: #e6edf3;
    --text-1: #b1bac4;
    --text-2: #7d8590;
    --accent: #ffb627;
    --accent-glow: rgba(255, 182, 39, 0.18);
    --success: #3fb950;
    --danger: #f85149;
}

* { margin: 0; padding: 0; box-sizing: border-box; -webkit-font-smoothing: antialiased; }

html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    color: var(--text-0);
    background: var(--bg-0);
    line-height: 1.55;
    scroll-behavior: smooth;
}

body {
    background:
        radial-gradient(ellipse 80% 50% at 50% 0%, var(--accent-glow), transparent 60%),
        var(--bg-0);
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Top navigation (slim, links back to main site) === */
.guides-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    background: rgba(10, 13, 18, 0.7);
    border-bottom: 1px solid var(--border);
}
.guides-nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 14px 32px;
    display: flex;
    align-items: center;
    gap: 24px;
}
.guides-nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 17px;
}
.guides-nav-logo-icon {
    width: 28px;
    height: 28px;
    border-radius: 7px;
    background: linear-gradient(135deg, var(--accent), #ff7a18);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(255, 182, 39, 0.3);
}
.guides-nav-logo-icon svg { width: 16px; height: 16px; color: #1a1410; }
.guides-nav-links {
    display: flex;
    gap: 22px;
    margin-left: auto;
    align-items: center;
    font-size: 14px;
    color: var(--text-1);
}
.guides-nav-links a {
    color: var(--text-1);
    transition: color 0.15s;
}
.guides-nav-links a:hover { color: var(--text-0); text-decoration: none; }

/* === Article shell === */
.article-shell {
    max-width: 760px;
    margin: 0 auto;
    padding: 48px 28px 80px;
}

/* Breadcrumb — both UI affordance and BreadcrumbList schema target */
.crumb {
    font-size: 13px;
    color: var(--text-2);
    margin-bottom: 28px;
}
.crumb a { color: var(--text-1); }
.crumb a:hover { color: var(--text-0); text-decoration: none; }
.crumb span[aria-current] { color: var(--text-1); }

/* H1 — search snippet primary */
.article-shell h1 {
    font-size: 38px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    color: var(--text-0);
}

/* Byline + meta strip */
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 14px;
    color: var(--text-2);
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}
.article-meta-author { color: var(--text-1); }
.article-meta-divider { color: var(--text-2); opacity: 0.5; }

/* TLDR box — first-paragraph hook for AI Overview citation */
.tldr-box {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 8px;
    padding: 20px 24px;
    margin-bottom: 36px;
}
.tldr-box-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 8px;
}
.tldr-box p {
    font-size: 15px;
    color: var(--text-0);
    line-height: 1.65;
}

/* === Body prose === */
.prose {
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-0);
}
.prose h2 {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.015em;
    margin: 56px 0 16px;
    color: var(--text-0);
    scroll-margin-top: 80px;
}
.prose h3 {
    font-size: 19px;
    font-weight: 700;
    margin: 32px 0 12px;
    color: var(--text-0);
    scroll-margin-top: 80px;
}
.prose p { margin-bottom: 16px; }
.prose ul, .prose ol { margin: 0 0 20px 24px; }
.prose ul li, .prose ol li { margin-bottom: 8px; }
.prose ul li::marker { color: var(--accent); }
.prose strong, .prose b { color: var(--text-0); font-weight: 700; }
.prose code {
    font-family: 'JetBrains Mono', Consolas, 'Liberation Mono', monospace;
    font-size: 14px;
    background: var(--bg-3);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 2px 6px;
}
.prose blockquote {
    border-left: 3px solid var(--accent);
    padding: 8px 0 8px 20px;
    margin: 24px 0;
    color: var(--text-1);
    font-style: italic;
}

/* Callout — for "tip" / "warning" / "key fact" inline boxes */
.callout {
    border: 1px solid var(--border-strong);
    border-radius: 10px;
    padding: 18px 22px;
    margin: 28px 0;
    background: var(--bg-2);
    display: flex;
    gap: 14px;
    align-items: flex-start;
}
.callout-icon { font-size: 20px; flex-shrink: 0; line-height: 1.4; }
.callout-body { font-size: 15px; color: var(--text-1); line-height: 1.6; }
.callout-body strong { color: var(--text-0); }
.callout.callout-tip { border-color: rgba(63, 185, 80, 0.3); }
.callout.callout-warn { border-color: rgba(248, 81, 73, 0.3); }

/* Tables for comparisons */
.prose table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}
.prose th, .prose td {
    border: 1px solid var(--border-strong);
    padding: 10px 14px;
    text-align: left;
}
.prose th {
    background: var(--bg-2);
    font-weight: 700;
    color: var(--text-0);
}
.prose td { color: var(--text-1); }

/* === FAQ section at bottom === */
.faq-block {
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}
.faq-block h2 { margin-top: 0; }
.faq-item {
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}
.faq-item summary {
    cursor: pointer;
    font-weight: 600;
    color: var(--text-0);
    font-size: 16px;
    list-style: none;
    position: relative;
    padding-right: 30px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 0;
    color: var(--accent);
    font-size: 22px;
    font-weight: 400;
    transition: transform 0.2s;
}
.faq-item[open] summary::after { content: '−'; }
.faq-item-body {
    margin-top: 12px;
    color: var(--text-1);
    font-size: 15px;
    line-height: 1.7;
}

/* === Related articles === */
.related-block {
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
}
.related-block h2 { margin-top: 0; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
    margin-top: 24px;
}
.related-card {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 18px 20px;
    transition: border-color 0.15s, transform 0.15s;
}
.related-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
    text-decoration: none;
}
.related-card-title {
    font-weight: 600;
    color: var(--text-0);
    font-size: 15px;
    margin-bottom: 6px;
    line-height: 1.35;
}
.related-card-desc {
    color: var(--text-2);
    font-size: 13px;
    line-height: 1.5;
}

/* === Bottom CTA — soft conversion to /download === */
.bottom-cta {
    margin-top: 64px;
    padding: 32px;
    background: var(--bg-2);
    border: 1px solid var(--border-strong);
    border-radius: 14px;
    text-align: center;
}
.bottom-cta h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-0);
}
.bottom-cta p {
    color: var(--text-1);
    margin-bottom: 20px;
    font-size: 15px;
}
.bottom-cta a.btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent), #ff7a18);
    color: #1a1410;
    font-weight: 700;
    padding: 12px 28px;
    border-radius: 8px;
    font-size: 15px;
}
.bottom-cta a.btn:hover { text-decoration: none; transform: translateY(-1px); }

/* === Footer === */
.guides-footer {
    margin-top: 80px;
    padding: 28px 0;
    text-align: center;
    color: var(--text-2);
    font-size: 13px;
    border-top: 1px solid var(--border);
}
.guides-footer a { color: var(--text-1); }

/* === Guides index page (list of articles) === */
.guides-index {
    max-width: 920px;
    margin: 0 auto;
    padding: 48px 28px 80px;
}
.guides-index-hero {
    text-align: center;
    margin-bottom: 48px;
}
.guides-index-hero h1 {
    font-size: 40px;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}
.guides-index-hero p {
    color: var(--text-1);
    font-size: 17px;
    max-width: 560px;
    margin: 0 auto;
}
.guides-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 18px;
}
.guide-link-card {
    background: var(--bg-2);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    transition: border-color 0.15s, transform 0.15s;
}
.guide-link-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    text-decoration: none;
}
.guide-link-card h3 {
    color: var(--text-0);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}
.guide-link-card p {
    color: var(--text-1);
    font-size: 14px;
    line-height: 1.55;
    margin-bottom: 12px;
}
.guide-link-card-meta {
    color: var(--text-2);
    font-size: 12px;
    display: flex;
    gap: 10px;
}

@media (max-width: 700px) {
    .article-shell h1 { font-size: 30px; }
    .prose h2 { font-size: 22px; }
    .article-shell, .guides-index { padding-left: 18px; padding-right: 18px; }
    .guides-nav-inner { padding: 12px 18px; gap: 16px; }
    .guides-nav-links { gap: 14px; font-size: 13px; }
}