/* Shared styling for Perla subsite pages (getting-started, docs) */
:root {
    --primary: #1e2761;
    --primary-light: #3a4596;
    --accent: #d4a76a;
    --accent-dark: #b8884a;
    --bg: #f4f2ee;
    --bg-soft: #ffffff;
    --ink: #1a1a2a;
    --ink-soft: #4a4a5a;
    --border: #d8d4cc;
    --code-bg: #1a1a2a;
    --code-text: #e6e0d2;
    --code-comment: #8a8a9a;
    --code-string: #d4a76a;
    --code-keyword: #a5c8ff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.65;
    color: var(--ink);
    background: var(--bg);
    background-image:
        radial-gradient(ellipse at top left, rgba(30, 39, 97, 0.05), transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(212, 167, 106, 0.08), transparent 50%);
    min-height: 100vh;
}

.logo-pearl {
    display: inline-block;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: radial-gradient(circle at 35% 30%, #ffffff, #c0c8d8 50%, #7a82a0 100%);
    box-shadow:
        inset 0 2px 4px rgba(255,255,255,0.6),
        inset 0 -2px 4px rgba(0,0,0,0.15),
        0 2px 8px rgba(30,39,97,0.2);
    vertical-align: middle;
    margin-right: 0.4rem;
}

nav {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-family: 'Georgia', serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: var(--ink-soft);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}
nav a:hover { color: var(--primary); }
nav a.nav-back { font-size: 0.88rem; opacity: 0.75; }
nav a.nav-back:hover { opacity: 1; }

.page-header {
    padding: 7rem 2rem 3rem;
    text-align: center;
    background:
        radial-gradient(circle at 30% 40%, rgba(255,255,255,0.8), transparent 60%),
        linear-gradient(180deg, var(--bg-soft) 0%, var(--bg) 100%);
    border-bottom: 1px solid var(--border);
}

.page-header h1 {
    font-family: 'Georgia', serif;
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.page-header p.tagline {
    font-size: 1.2rem;
    color: var(--ink-soft);
    max-width: 640px;
    margin: 0 auto;
}

main {
    max-width: 860px;
    margin: 0 auto;
    padding: 3rem 2rem 5rem;
}

main h2 {
    font-family: 'Georgia', serif;
    color: var(--primary);
    font-size: 1.9rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border);
}
main h2:first-child { margin-top: 0; }

main h3 {
    color: var(--primary);
    font-size: 1.3rem;
    margin-top: 2rem;
    margin-bottom: 0.7rem;
}

main p {
    color: var(--ink);
    margin-bottom: 1rem;
    line-height: 1.7;
}

main ul, main ol {
    color: var(--ink);
    padding-left: 1.5rem;
    margin-bottom: 1.2rem;
    line-height: 1.75;
}
main li { margin-bottom: 0.3rem; }

main a {
    color: var(--primary);
    text-decoration: underline;
    text-decoration-color: rgba(30, 39, 97, 0.3);
    text-underline-offset: 2px;
}
main a:hover { text-decoration-color: var(--primary); }

main code {
    background: var(--bg-soft);
    border: 1px solid var(--border);
    padding: 0.12rem 0.4rem;
    border-radius: 3px;
    font-family: 'SF Mono', Menlo, Consolas, monospace;
    font-size: 0.88em;
    color: var(--primary);
}

main pre {
    background: var(--code-bg);
    color: var(--code-text);
    padding: 1.4rem 1.6rem;
    border-radius: 8px;
    overflow-x: auto;
    font-family: 'SF Mono', Menlo, Consolas, monospace;
    font-size: 0.88rem;
    line-height: 1.6;
    margin: 1.2rem 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

main pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

main pre .comment { color: var(--code-comment); font-style: italic; }
main pre .str     { color: var(--code-string); }
main pre .kw      { color: var(--code-keyword); font-weight: 500; }
main pre .prompt  { color: #7a8a9a; user-select: none; }

main blockquote {
    background: var(--bg-soft);
    border-left: 4px solid var(--accent);
    padding: 1rem 1.4rem;
    margin: 1.4rem 0;
    color: var(--ink-soft);
    border-radius: 0 6px 6px 0;
}

main table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.2rem 0;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    font-size: 0.93rem;
}
main table th {
    background: var(--primary);
    color: white;
    text-align: left;
    padding: 0.7rem 1rem;
    font-weight: 600;
}
main table td {
    padding: 0.65rem 1rem;
    border-top: 1px solid var(--border);
    vertical-align: top;
}
main table tr:nth-child(even) td { background: rgba(30, 39, 97, 0.02); }

.callout {
    background: var(--bg-soft);
    border-left: 4px solid var(--accent);
    padding: 1.2rem 1.5rem;
    margin: 1.6rem 0;
    border-radius: 0 6px 6px 0;
}
.callout.info { border-left-color: var(--primary-light); }
.callout strong { color: var(--primary); }

.doc-index {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.2rem;
    margin: 2rem 0;
}
.doc-index a.card {
    display: block;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.3rem;
    text-decoration: none;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}
.doc-index a.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(30,39,97,0.08);
    border-color: var(--accent);
}
.doc-index a.card h3 {
    color: var(--primary);
    margin: 0 0 0.4rem;
    font-size: 1.1rem;
}
.doc-index a.card p {
    color: var(--ink-soft);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.5;
}

footer {
    background: #141424;
    color: #a0a8b8;
    padding: 3rem 2rem;
    text-align: center;
    font-size: 0.9rem;
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { color: white; }

@media (max-width: 700px) {
    nav ul { gap: 0.9rem; font-size: 0.85rem; }
    .page-header h1 { font-size: 2rem; }
    .page-header p.tagline { font-size: 1rem; }
    main { padding: 2rem 1.2rem 3rem; }
    main h2 { font-size: 1.5rem; }
}