/* ============================================================
   DISEÑO EDITORIAL CONTEMPORÁNEO // FADU DGPC
   ============================================================ */

/* 1. RESET Y VARIABLES DE SISTEMA */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #f7f6f2;             /* Fondo off-white editorial */
    --surface: #ffffff;        /* Blanco puro para módulos */
    --text: #161616;           /* Tinta negra */
    --muted: #6f6f6f;          /* Gris para jerarquía secundaria */
    --border: #dcd8cf;         /* Filetes estructurales */
    --accent: #d94826;         /* Acento editorial (Terracota / International Orange) */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "SF Mono", "Roboto Mono", "Courier New", monospace;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.5;
    padding: 48px 24px 80px 24px;
    max-width: 980px;
    margin: 0 auto;
    -webkit-font-smoothing: antialiased;
}

/* 2. ENCABEZADO / RÓTULO SUPERIOR */
.header-editorial {
    border-bottom: 2px solid var(--text);
    padding-bottom: 24px;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tag-categoria {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 700;
}

.titulo-autor {
    font-size: clamp(38px, 6vw, 60px);
    font-weight: 700;
    letter-spacing: -0.035em;
    line-height: 1;
    color: var(--text);
}

.bajada-header {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

/* 3. BARRAS DE NAVEGACIÓN MODULARES */
.nav-barra {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

.nav-label {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    min-width: 95px;
}

.nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    padding: 2px 0;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
}

.nav-links a:hover {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* 4. GRILLA PRINCIPAL DE CONTENIDO */
.grilla-principal {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 32px;
    margin-top: 36px;
}

/* 5. MÓDULOS DE INFORMACIÓN */
.tarjeta {
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 24px;
}

/* Módulo 1: Foto de Perfil */
.bloque-foto {
    grid-column: 1 / 2;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.foto-perfil {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
    border: 1px solid var(--border);
    margin-bottom: 14px;
}

.epigrafe-foto {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rol-tag {
    color: var(--accent);
    font-weight: 700;
}

/* Módulo 2: Foja Académica */
.bloque-academica {
    grid-column: 2 / 3;
}

.titulo-seccion {
    font-family: var(--font-mono);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text);
    border-bottom: 1px solid var(--text);
    padding-bottom: 8px;
    margin-bottom: 18px;
    font-weight: 700;
}

.resumen-carrera {
    display: flex;
    gap: 24px;
    margin-bottom: 24px;
    font-size: 13px;
    background: var(--bg);
    padding: 10px 14px;
    border: 1px solid var(--border);
}

.resumen-carrera p strong {
    color: var(--text);
}

.sub-grilla-materias {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.col-materias h3 {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
    margin-bottom: 10px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}

.col-materias ul {
    list-style: none;
    font-size: 13px;
}

.col-materias li {
    padding: 6px 0;
    border-bottom: 1px dashed var(--border);
    color: var(--text);
}

/* Módulo 3: Datos Institucionales */
.bloque-institucional {
    grid-column: 1 / -1;
    margin-top: 8px;
}

.lista-ficha {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px 32px;
}

.fila-ficha {
    display: grid;
    grid-template-columns: 140px 1fr;
    font-size: 12px;
    align-items: baseline;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.fila-ficha dt {
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
    color: var(--muted);
    letter-spacing: 0.05em;
}

.fila-ficha dd {
    color: var(--text);
}

/* 6. PIE LEGAL */
.pie-legal {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--muted);
    line-height: 1.6;
}

/* 7. RESPONSIVE */
@media (max-width: 768px) {
    body {
        padding: 24px 16px;
    }
    .grilla-principal {
        grid-template-columns: 1fr;
    }
    .sub-grilla-materias,
    .lista-ficha {
        grid-template-columns: 1fr;
    }
    .fila-ficha {
        grid-template-columns: 120px 1fr;
    }
}
/* ============================================================
   BOTÓN INTERACTIVO Y DESPLEGABLE: IDEA DE APP
   ============================================================ */

.bloque-app {
    grid-column: 1 / -1;
    margin-top: 14px;
    padding: 0;
    overflow: hidden;
}

/* El summary actúa como el botón llamativo */
.btn-app {
    display: block;
    background: #0056b3;
    color: #ffffff;
    padding: 16px 24px;
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    cursor: pointer;
    user-select: none;
    list-style: none;
    transition: background 0.2s ease, transform 0.1s ease;
    border-radius: 6px;
    text-align: center;
}

/* Quita el triángulo por defecto del navegador */
.btn-app::-webkit-details-marker {
    display: none;
}

.btn-app:hover {
    background: #004085;
}

/* Estado cuando el botón está abierto */
.desplegable-app[open] .btn-app {
    background: #111111;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

/* Contenedor del contenido desplegado */
.contenido-brief {
    background: #ffffff;
    padding: 24px;
    border: 1px solid #e0e0e0;
    border-top: none;
    animation: aparecer 0.25s ease-out;
}

@keyframes aparecer {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.brief-cabecera {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid #0056b3;
    padding-bottom: 8px;
    margin-bottom: 16px;
}

.brief-cabecera h3 {
    font-size: 17px;
    color: #222;
}

.badge-modalidad {
    background: #e9ecef;
    color: #0056b3;
    font-size: 11px;
    font-weight: bold;
    padding: 3px 8px;
    border-radius: 4px;
    text-transform: uppercase;
}

/* Lista de ítems del Brief */
.lista-brief {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.item-brief {
    display: grid;
    grid-template-columns: 180px 1fr;
    font-size: 13px;
    line-height: 1.5;
    border-bottom: 1px dashed #eee;
    padding-bottom: 8px;
}

.item-brief dt {
    font-weight: bold;
    color: #333;
}

.item-brief dd {
    color: #555;
}

.item-out dd {
    color: #b71c1c;
    font-weight: 500;
}

/* Responsive en celulares */
@media (max-width: 600px) {
    .item-brief {
        grid-template-columns: 1fr;
        gap: 2px;
    }
}