/* ==========================================================================
   HOJA DE ESTILOS EDITORIAL MODULAR - FONDO BLANCO ABSOLUTO (ALTO CONTRASTE)
   ========================================================================== */

html {
    scroll-behavior: smooth;
    scroll-padding-top: 75px;
}

body {
    background-color: #FFFFFF; /* Fondo Blanco Obligatorio en todo el documento */
    color: #1E293B; /* Texto Oscuro de Máximo Contraste */
    line-height: 1.6;
    margin: 0; padding: 0;
}

.bc-container {
    width: 100%;
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 24px;
    box-sizing: border-box;
    background-color: #FFFFFF; /* Asegura fondo blanco en el contenedor */
}

/* --- BARRA DE NAVEGACIÓN FIJA --- */
.bc-navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    height: 65px;
    background-color: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid #E2E8F0;
    z-index: 1000;
    display: flex;
    align-items: center;
}

.bc-nav-container {
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.bc-nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #0F172A;
    font-weight: 700;
    font-size: 1.1rem;
}

.bc-nav-logo img {
    height: 30px;
    width: auto;
}

.bc-nav-menu {
    display: flex;
    gap: 18px;
    list-style: none;
    margin: 0; padding: 0;
}

.bc-nav-menu a {
    text-decoration: none;
    color: #475569;
    font-size: 0.82rem;
    font-weight: 600;
    transition: color 0.2s ease;
    display: flex;
    gap: 2px;
    align-items: center;
}

.bc-nav-menu a:hover {
    color: #6829D0; /* Púrpura Rizoma */
}

.bc-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    color: #0F172A;
    cursor: pointer;
}

/* --- HERO EDITORIAL MINIMALISTA --- */
.bc-hero {
    padding: 130px 0 45px 0;
    background-color: #FFFFFF; /* Cambiado a blanco absoluto */
    border-bottom: 1px solid #E2E8F0;
}

.bc-tag {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: #00D1D2; /* Cian */
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.bc-main-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.8rem;
    color: #0F172A;
    margin: 0 0 8px 0;
    line-height: 1.1;
}

.bc-lead {
    font-size: 1.15rem;
    color: #334155;
    max-width: 750px;
    margin: 0;
}

/* --- ESTRUCTURA MODULAR DE LAS SECCIONES --- */
.bc-section {
    padding: 60px 0;
    background-color: #FFFFFF; /* Totalmente blanco */
}

/* LÍNEAS DE SEPARACIÓN DISFORMES (Reemplazan a los fondos de color) */
.bc-line-separator {
    border-top: 4px double #E2E8F0;    /* Línea doble arriba */
    border-bottom: 1px solid #CBD5E1; /* Línea simple más oscura abajo */
    padding: 75px 0;                  /* Espaciado orgánico ligeramente disforme */
}

/* Grid Dividido Limpio (Alineación Editorial) */
.bc-grid-split {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 40px;
    align-items: start;
}

/* Columna de Metadatos y Título */
.bc-meta-col {
    position: sticky;
    top: 90px;
}

.bc-num {
    font-family: 'Playfair Display', serif;
    font-size: 3.5rem;
    font-weight: 700;
    color: #E2E8F0; /* Número sutil */
    display: block;
    line-height: 1;
    margin-bottom: 4px;
}

.bc-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    color: #0F172A;
    margin: 0 0 12px 0;
    line-height: 1.2;
}

.bc-context {
    font-size: 0.85rem;
    color: #6829D0; /* Púrpura */
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
    border-top: 1px solid #E2E8F0;
    padding-top: 12px;
}

/* Columna de Texto Fluido Contínuo */
.bc-content-col p {
    font-size: 0.95rem;
    color: #334155; /* Contraste perfecto sobre fondo blanco */
    margin: 0 0 16px 0;
    text-align: justify;
}

.bc-content-col p:last-child {
    margin-bottom: 0;
}

/* --- FOOTER INSTITUCIONAL --- */
.bc-footer {
    text-align: center;
    padding: 35px 0;
    border-top: 1px solid #E2E8F0;
    background-color: #FFFFFF;
    color: #64748B;
    font-size: 0.8rem;
}

.bc-footer p { margin: 4px 0; }

/* --- RESPONSIVE ADAPTATIVO MÓVIL --- */
@media (max-width: 768px) {
    .bc-menu-toggle { display: block; }
    
    .bc-nav-menu {
        position: absolute;
        top: 65px; left: 0; width: 100%;
        background-color: #FFFFFF;
        border-bottom: 1px solid #E2E8F0;
        flex-direction: column;
        gap: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
    }
    
    .bc-nav-menu.active { max-height: 42rem; }
    .bc-nav-menu li { width: 100%; }
    .bc-nav-menu a { display: block; padding: 12px 24px; border-bottom: 1px solid #F1F5F9; font-size: 0.9rem; }
    
    .bc-grid-split {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .bc-meta-col {
        position: static;
    }
    
    .bc-num { font-size: 2.5rem; }
    .bc-main-title { font-size: 2rem; }
    .bc-hero { padding: 110px 0 30px 0; }
    .bc-section { padding: 35px 0; }
    .bc-line-separator { padding: 45px 0; }
}