/* =====================================================================
   HOJA DE ESTILOS: INTERFAZ INVENTARIO EXTREMO AL 100% - SDTV KEYS
   VERSIÓN: 1.0.0 (COMPLETA - BLINDAJE DE EXTREMO A EXTREMO EN COMODIDAD)
   ===================================================================== */
:root {
    --bg-principal: #f1f5f9;
    --bg-tarjeta: #ffffff;
    --azul-premium: #0284c7;
    --azul-suave: #e0f2fe;
    --texto-principal: #0f172a;
    --texto-mutado: #475569;
    --borde-sutil: #cbd5e1;
}

body { background-color: var(--bg-principal); color: var(--texto-principal); font-family: system-ui, -apple-system, sans-serif; margin: 0; padding: 0; line-height: 1.6; }

/* RESTRUCTURACIÓN TOTAL: Expansión absoluta al 100% de la pantalla sin márgenes vacíos */
.layout-dos-columnas { width: 100%; margin: 20px 0; padding: 0 30px; box-sizing: border-box; }
.columna-manuales { width: 73%; float: left; box-sizing: border-box; }
.columna-lateral { width: 25%; float: right; box-sizing: border-box; }

.cabecera-simetrica { background: var(--bg-tarjeta); border-bottom: 1px solid var(--borde-sutil); padding: 15px 30px; display: flex; justify-content: space-between; align-items: center; width: 100%; box-sizing: border-box; }
.cabecera-links, .footer-links { display: flex; gap: 20px; } 
.cabecera-links a, .footer-links a { color: var(--azul-premium); font-size: 13px; font-weight: bold; text-decoration: none; }
.cabecera-links a:hover, .footer-links a:hover { text-decoration: underline; }

.post-card-blogger { background: var(--bg-tarjeta); border: 1px solid var(--borde-sutil); border-radius: 12px; padding: 30px; margin-bottom: 25px; box-shadow: 0 4px 6px rgba(0,0,0,0.02); box-sizing: border-box; width: 100%; }
.sidebar-blogger { background: var(--bg-tarjeta); padding: 25px; border-radius: 8px; border: 1px solid var(--borde-sutil); box-sizing: border-box; width: 100%; }

.bunker-layout { display: flex; min-height: 100vh; }
.sidebar-fijo { width: 260px; background: #ffffff; border-right: 1px solid var(--borde-sutil); padding: 25px; box-sizing: border-box; }
.panel-derecho { flex: 1; padding: 35px; box-sizing: border-box; }
.menu-link { display: block; padding: 12px 15px; color: var(--texto-principal); text-decoration: none; font-weight: bold; font-size: 13px; border-radius: 6px; margin-bottom: 8px; }
.menu-link:hover { background: var(--azul-suave); color: var(--azul-premium); }

input[type="text"], input[type="password"], select, textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--borde-sutil); border-radius: 6px; box-sizing: border-box; font-size: 14px; background: #fff; color: #000; }
.btn-premium { display: inline-block; padding: 12px 24px; background: var(--azul-premium); color: #fff; font-weight: bold; font-size: 13px; border-radius: 8px; cursor: pointer; text-transform: uppercase; border: none; text-decoration: none; text-align: center; }

.footer-simetrico { background: var(--bg-tarjeta); border-top: 1px solid var(--borde-sutil); padding: 25px 30px; display: block; text-align: center; width: 100%; box-sizing: border-box; font-size: 12px; color: var(--texto-mutado); }
.whatsapp-flotante-sdtv { position: fixed; bottom: 25px; right: 25px; background: #25d366; color: #fff; width: 55px; height: 55px; border-radius: 50%; display: flex; justify-content: center; align-items: center; font-size: 13px; text-decoration: none; box-shadow: 0 4px 10px rgba(0,0,0,0.3); z-index: 99999; font-weight: bold; }