/* ==========================================================================
   FERNÁNDEZ CERTIFICACIONES - IDENTIDAD INSTITUCIONAL
   Paleta: Azul Noche (#0a192f), Platino (#f8fafc), Oro Institucional (#c59b27)
   ========================================================================== */

:root {
    --color-fondo: #f8fafc;
    --color-texto: #1e293b;
    --color-primario: #0a192f;
    --color-secundario: #1e3a8a;
    --color-acento: #c59b27;
    --color-blanco: #ffffff;
    --color-borde: #e2e8f0;
    --color-gris-texto: #475569;
    --fuente-principal: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

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

body {
    background-color: var(--color-fondo);
    color: var(--color-texto);
    font-family: var(--fuente-principal);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.contenedor {
    width: 90%;
    max-width: 1140px;
    margin: 0 auto;
}

/* Header & Navegación */
.sitio-header {
    background-color: var(--color-primario);
    border-bottom: 3px solid var(--color-acento);
    padding: 1rem 0;
}

.header-contenido {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.logo-titulo {
    color: var(--color-blanco);
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 1.5px;
}

.logo-sub {
    color: var(--color-acento);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
}

.navegacion-principal ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.navegacion-principal a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.navegacion-principal a:hover,
.navegacion-principal .link-doctrina {
    color: var(--color-acento);
}

/* Estado activo de navegación */
.navegacion-principal a.nav-link.active {
    color: var(--color-acento);
    font-weight: 700;
}

.btn-contacto {
    background-color: var(--color-acento);
    color: var(--color-primario) !important;
    padding: 0.5rem 1.2rem;
    border-radius: 4px;
    font-weight: 700 !important;
    transition: opacity 0.2s ease;
}

.btn-contacto:hover {
    opacity: 0.9;
}

/* Footer */
.sitio-footer {
    background-color: var(--color-primario);
    color: #94a3b8;
    margin-top: auto;
    padding-top: 3.5rem;
    border-top: 1px solid #1e293b;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2.5rem;
    padding-bottom: 2.5rem;
}

.footer-logo {
    color: var(--color-blanco);
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    letter-spacing: 1px;
}

.footer-col h4 {
    color: var(--color-blanco);
    font-size: 1rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--color-acento);
    display: inline-block;
    padding-bottom: 0.2rem;
}

.footer-col p {
    font-size: 0.9rem;
    line-height: 1.5;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.footer-col a:hover {
    color: var(--color-acento);
}

.footer-bottom {
    background-color: #050d1a;
    padding: 1.2rem 0;
    text-align: center;
    font-size: 0.85rem;
    border-top: 1px solid #1e293b;
}

/* Responsividad */
@media (max-width: 768px) {
    .header-contenido {
        flex-direction: column;
        gap: 1rem;
    }
    .navegacion-principal ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}