:root {
    --bg: #f7f7fb;
    --surface: #ffffff;
    --text: #1b1b2a;
    --muted: #5d5d73;
    --border: #e3e3ee;
    --primary: #6b3fd4;
    --primary-soft: rgba(107, 63, 212, 0.08);
    --radius: 14px;
    --shadow: 0 1px 2px rgba(20, 20, 40, 0.05), 0 6px 20px rgba(20, 20, 40, 0.06);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #12121a;
        --surface: #1b1b26;
        --text: #ececf4;
        --muted: #a2a2b8;
        --border: #2c2c3c;
        --primary: #a586ff;
        --primary-soft: rgba(165, 134, 255, 0.12);
        --shadow: none;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); }
code { background: var(--primary-soft); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.9em; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }
.center { text-align: center; }
.section { padding: 3rem 16px 4rem; }
.muted { color: var(--muted); }
.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.78rem; font-weight: 700; color: var(--primary); margin: 0 0 0.5rem; }
.link { font-weight: 600; text-decoration: none; }
.link:hover { text-decoration: underline; }

/* Cabecera */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--text); }
.brand-mark { width: 34px; height: 34px; border-radius: 10px; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 800; }
.brand-name { font-size: 1.1rem; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; }
.nav a:hover { color: var(--text); }

/* Portada */
.hero { padding: 4rem 0 2rem; }
.hero h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; margin: 0 0 0.75rem; }
.hero h1 span { color: var(--primary); }
.hero p { color: var(--muted); font-size: 1.15rem; max-width: 600px; margin: 0; }
.section-title { font-size: 1.4rem; margin: 0 0 1.25rem; }
.app-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.app-card { display: flex; gap: 1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow); }
.app-card h3 { margin: 0 0 0.25rem; }
.app-card p { margin: 0 0 0.75rem; }
.app-icon { flex: none; width: 56px; height: 56px; border-radius: 14px; background: linear-gradient(135deg, var(--primary), #e0559b); color: #fff; display: grid; place-items: center; font-size: 1.6rem; font-weight: 800; }

/* Documento legal */
.legal h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin: 0 0 0.25rem; }
.legal h2 { font-size: 1.2rem; margin: 2.25rem 0 0.5rem; scroll-margin-top: 80px; }
.legal ul { padding-left: 1.25rem; }
.legal li { margin-bottom: 0.4rem; }
.callout { background: var(--primary-soft); border-left: 4px solid var(--primary); border-radius: 8px; padding: 1rem 1.25rem; margin: 1.5rem 0; }
.toc { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; }
.toc ol { margin: 0; padding-left: 1.25rem; columns: 2; column-gap: 2rem; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; display: block; overflow-x: auto; }
.data-table th, .data-table td { text-align: left; padding: 0.6rem; border-bottom: 1px solid var(--border); }

/* Pie */
.site-footer { border-top: 1px solid var(--border); padding: 1.5rem 0; color: var(--muted); font-size: 0.9rem; }
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.site-footer a { color: var(--muted); }

@media (max-width: 600px) {
    .toc ol { columns: 1; }
    .hero { padding-top: 2.5rem; }
}