/* Adhoc: shared styles for /learn GEO articles — readable, crawl-friendly layout. */
:root {
    --learn-bg: #020617;
    --learn-surface: rgba(15, 23, 42, 0.7);
    --learn-border: rgba(255, 255, 255, 0.08);
    --learn-text: #e2e8f0;
    --learn-muted: #94a3b8;
    --learn-accent: #6366f1;
    --learn-emerald: #34d399;
}

* { box-sizing: border-box; }

body.learn-page {
    margin: 0;
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    background: var(--learn-bg);
    color: var(--learn-text);
    line-height: 1.7;
}

.learn-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--learn-border);
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(12px);
}

.learn-nav a {
    color: var(--learn-muted);
    text-decoration: none;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.learn-nav a:hover { color: #fff; }

.learn-brand {
    font-weight: 900;
    font-size: 1.1rem;
    letter-spacing: 0.04em;
    color: #fff;
}

.learn-brand span { color: var(--learn-accent); }

.learn-wrap {
    max-width: 760px;
    margin: 0 auto;
    padding: 3rem 1.5rem 5rem;
}

.learn-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1.5rem;
    font-size: 0.8rem;
    color: var(--learn-muted);
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--learn-border);
}

.learn-meta strong { color: #cbd5e1; }

.learn-kicker {
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--learn-emerald);
    margin-bottom: 0.75rem;
}

.learn-wrap h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.2;
    margin: 0 0 1rem;
    font-weight: 800;
}

.learn-summary {
    font-size: 1.1rem;
    color: #cbd5e1;
    margin-bottom: 2.5rem;
}

.learn-wrap h2 {
    font-size: 1.35rem;
    margin: 2.5rem 0 0.75rem;
    font-weight: 700;
    color: #f8fafc;
}

.learn-wrap h3 {
    font-size: 1.05rem;
    margin: 1.75rem 0 0.5rem;
    color: #e2e8f0;
}

.learn-wrap p { margin: 0 0 1rem; }

/* Adhoc: first paragraph after H2 is the AI-extractable "answer pod". */
.answer-lead {
    font-size: 1.02rem;
    color: #f1f5f9;
    border-left: 3px solid var(--learn-accent);
    padding-left: 1rem;
    margin-bottom: 1.25rem;
}

.learn-wrap ul, .learn-wrap ol {
    margin: 0 0 1.25rem;
    padding-left: 1.35rem;
}

.learn-wrap li { margin-bottom: 0.45rem; }

.learn-wrap a { color: #818cf8; }
.learn-wrap a:hover { color: #a5b4fc; }

.learn-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0 1.5rem;
    font-size: 0.9rem;
}

.learn-table th,
.learn-table td {
    border: 1px solid var(--learn-border);
    padding: 0.65rem 0.85rem;
    text-align: left;
    vertical-align: top;
}

.learn-table th {
    background: var(--learn-surface);
    color: #f8fafc;
    font-weight: 700;
}

.learn-table td { color: var(--learn-muted); }

.learn-card {
    background: var(--learn-surface);
    border: 1px solid var(--learn-border);
    border-radius: 1rem;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}

.learn-sources {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--learn-border);
    font-size: 0.85rem;
    color: var(--learn-muted);
}

.learn-sources ul { list-style: none; padding: 0; }
.learn-sources li { margin-bottom: 0.5rem; }

.learn-faq { margin-top: 2.5rem; }

.learn-faq details {
    border: 1px solid var(--learn-border);
    border-radius: 0.75rem;
    margin-bottom: 0.75rem;
    background: var(--learn-surface);
}

.learn-faq summary {
    cursor: pointer;
    padding: 1rem 1.25rem;
    font-weight: 600;
    color: #f8fafc;
}

.learn-faq details p {
    padding: 0 1.25rem 1rem;
    margin: 0;
    color: var(--learn-muted);
}

.learn-cta {
    margin-top: 2.5rem;
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid rgba(99, 102, 241, 0.35);
    background: rgba(99, 102, 241, 0.08);
}

.learn-cta a {
    font-weight: 700;
    color: #c7d2fe;
}

.learn-hub-grid {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.learn-hub-card {
    display: block;
    padding: 1.25rem 1.5rem;
    border-radius: 1rem;
    border: 1px solid var(--learn-border);
    background: var(--learn-surface);
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s;
}

.learn-hub-card:hover {
    border-color: rgba(99, 102, 241, 0.5);
}

.learn-hub-card h2 {
    margin: 0 0 0.5rem;
    font-size: 1.1rem;
    color: #f8fafc;
}

.learn-hub-card p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--learn-muted);
}

.learn-footer {
    text-align: center;
    padding: 2rem 1.5rem 3rem;
    font-size: 0.7rem;
    color: #475569;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* Adhoc: monospace blocks for API reference pages */
.learn-code {
    display: block;
    overflow-x: auto;
    margin: 1rem 0 1.5rem;
    padding: 1rem 1.15rem;
    border-radius: 0.75rem;
    border: 1px solid var(--learn-border);
    background: #0a0f1c;
    font-family: ui-monospace, 'JetBrains Mono', Menlo, monospace;
    font-size: 0.78rem;
    line-height: 1.55;
    color: #cbd5e1;
    white-space: pre;
}