/* ==========================================================================
   BLOG — TALONARIO — estilos comunes (compartidos por index + 5 articulos)
   ==========================================================================
   Diseño: fondo claro, tipografia serifada para el articulo (mejor lectura
   larga), sans en nav/CTA. Ancho 720px optimo para reading (Nielsen).
   ========================================================================== */

:root {
    --bg: #f5f6f8; --surface: #fff; --surface-2: #f0f2f5;
    --borde: #e3e6eb; --borde-alto: #cbd1da;
    --text: #1a1d23; --text2: #4b5563; --text3: #6b7280;
    --brand: #3a5a86; --brand-hover: #31507a; --brand-suave: #e8eef7;
    --brand-tx: #294567;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', system-ui, sans-serif; background: var(--bg);
    color: var(--text); margin: 0; line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--brand-tx); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Nav */
header.nav {
    background: rgba(255,255,255,.9); backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--borde); position: sticky; top: 0; z-index: 40;
    padding: 12px 0;
}
header.nav .wrap {
    max-width: 900px; margin: 0 auto; padding: 0 20px;
    display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 900; color: var(--text); }
.logo-badge {
    width: 34px; height: 34px; border-radius: 10px; background: var(--brand);
    display: flex; align-items: center; justify-content: center;
}
.cta {
    background: var(--brand); color: #fff; padding: 10px 18px; border-radius: 10px;
    font-weight: 800; font-size: .85rem; text-decoration: none; display: inline-block;
}
.cta:hover { background: var(--brand-hover); text-decoration: none; }

/* Article */
main.article { max-width: 720px; margin: 0 auto; padding: 30px 20px 60px; }
.breadcrumb { color: var(--text3); font-size: .78rem; margin-bottom: 24px; }
.badge {
    display: inline-block; font-size: .7rem; font-weight: 800; text-transform: uppercase;
    letter-spacing: .06em; color: var(--brand-tx); background: var(--brand-suave);
    padding: 5px 12px; border-radius: 8px; margin-bottom: 14px;
}
article h1 {
    font-size: 2.1rem; font-weight: 900; line-height: 1.2;
    margin: 0 0 16px; letter-spacing: -.025em; color: var(--text);
}
article h2 {
    font-size: 1.45rem; font-weight: 800; margin: 42px 0 14px;
    letter-spacing: -.015em; color: var(--text);
}
article h3 {
    font-size: 1.1rem; font-weight: 800; margin: 28px 0 10px;
    color: var(--text);
}
article .lead {
    font-size: 1.15rem; color: var(--text2); line-height: 1.6;
    margin: 0 0 14px;
}
article .meta { color: var(--text3); font-size: .78rem; margin: 0 0 30px; }
article p { color: var(--text2); font-size: 1rem; line-height: 1.75; margin: 0 0 14px; }
article ul, article ol { color: var(--text2); font-size: 1rem; line-height: 1.75; padding-left: 24px; margin: 0 0 18px; }
article li { margin-bottom: 8px; }
article strong { color: var(--text); }
article code {
    background: var(--surface-2); padding: 1px 6px; border-radius: 4px;
    font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: .9em;
}
article a { color: var(--brand-tx); font-weight: 600; }

/* Callout box (avisos y tips) */
.callout {
    background: rgba(234, 179, 8, .08); border-left: 3px solid #eab308;
    padding: 14px 18px; border-radius: 8px; margin: 24px 0;
    color: var(--text); font-size: .95rem; line-height: 1.6;
}
.callout.success { background: rgba(16, 185, 129, .07); border-left-color: #10b981; }
.callout.info { background: rgba(59, 130, 246, .07); border-left-color: #3b82f6; }
.callout strong { color: var(--text); }

/* CTA box al final del articulo */
.cta-box {
    background: linear-gradient(135deg, var(--brand-suave), rgba(232,238,247,.4));
    border: 1px solid var(--brand); border-radius: 16px;
    padding: 28px 24px; text-align: center; margin: 40px 0;
}
.cta-box h3 { color: var(--text); font-size: 1.25rem; margin: 0 0 8px; }
.cta-box p { color: var(--text2); margin: 0 0 18px; }

/* Tabla comparativa (para articulos que la usen) */
article table {
    width: 100%; border-collapse: collapse; margin: 20px 0;
    font-size: .9rem; background: var(--surface);
    border: 1px solid var(--borde); border-radius: 8px; overflow: hidden;
}
article th, article td {
    padding: 10px 14px; border-bottom: 1px solid var(--borde); text-align: left;
}
article th {
    background: var(--surface-2); color: var(--text); font-weight: 800;
    text-transform: uppercase; font-size: .72rem; letter-spacing: .04em;
}
article tr:last-child td { border-bottom: none; }

/* Footer */
footer {
    border-top: 1px solid var(--borde); background: var(--surface);
    padding: 24px 20px; text-align: center; color: var(--text3);
    font-size: .8rem; margin-top: 60px;
}
footer a { color: var(--brand-tx); margin: 0 4px; }