/* =========================================
   1. RESET Y BASE
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    background-color: #f5f5f5;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* =========================================
   2. BARRA GOB.MX (REDES SOCIALES)
   ========================================= */
.barra-gobmx {
    background-color: #6F1535;
    padding: 6px 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.barra-gobmx img {
    height: 28px;
    object-fit: contain;
}

.barra-gobmx .redes-sociales {
    display: flex;
    align-items: center;
    gap: 18px;
}

.barra-gobmx .redes-sociales a {
    color: #fff;
    font-size: 16px;
    text-decoration: none;
    transition: opacity 0.2s;
}

.barra-gobmx .redes-sociales a:hover {
    opacity: 0.75;
}

/* =========================================
   3. BARRA SUPERIOR INSTITUCIONAL (LOGOS)
   ========================================= */
.header-institucional {
    background-color: #fff;
    padding: 15px 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    border-bottom: 3px solid #1a3a5c; /* Borde azul inferior */
    flex-wrap: wrap;
}

.header-institucional img {
    height: 60px;
    object-fit: contain;
}

.header-institucional img.logo-ito {
    height: 65px;
}

/* =========================================
   3. BARRA DE NAVEGACION (MENU AZUL)
   ========================================= */
.nav-bar {
    background-color: #1a3a5c; /* Fondo azul oscuro */
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    width: 100%;
}

.nav-bar > ul {
    list-style: none;
    display: flex;
    justify-content: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
}

.nav-bar > ul > li {
    flex: 1;
}

.nav-bar > ul > li > a {
    display: block;
    color: #fff;
    text-decoration: none;
    padding: 14px 15px;
    text-align: center;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.5px;
    border-bottom: 4px solid transparent;
}

/* Clase para la pestaña activa actual */
.nav-bar > ul > li > a.active {
    background-color: #2a5a8c;
    border-bottom: 4px solid #e8a020;
    font-weight: 700;
}

/* ── Dropdown submenu ── */
.nav-dropdown {
    position: relative;
}

.nav-dropdown.open > a {
    background-color: #1a3a5c;
    border-bottom: 4px solid #e8a020;
}

.nav-submenu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    width: 100%;
    list-style: none;
    padding: 6px 0;
    margin: 0;
    z-index: 1100;
    box-shadow: 0 6px 18px rgba(0,0,0,0.18);
    border-top: 3px solid #e8a020;
}

.nav-dropdown.open .nav-submenu {
    display: block;
}

.nav-submenu li {
    flex: none;
}

.nav-submenu li a {
    display: block;
    padding: 13px 20px;
    color: #1a3a5c;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-bottom: none;
    text-align: left;
}

/* =========================================
   4. ESTILOS DE PAGINA: INICIO (HERO)
   ========================================= */
.hero {
    position: relative;
    width: 100%;
    height: 500px; /* Altura fija */
    overflow: hidden;
    background-color: #1a3a5c; /* Color de fondo por si no carga la imagen */
}

.hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(26, 58, 92, 0.6) 0%,
        rgba(26, 58, 92, 0.4) 50%,
        rgba(26, 58, 92, 0.8) 100%
    );
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
}

.hero-overlay h1 {
    color: #fff;
    font-size: 42px;
    font-weight: 700;
    text-shadow: 2px 2px 6px rgba(0,0,0,0.5);
    margin-bottom: 10px;
}

.hero-overlay p {
    color: #f0f0f0;
    font-size: 22px;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.5);
}

/* =========================================
   5. SECCIONES DE CONTENIDO GENERAL
   ========================================= */
.content-section {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 30px;
    flex: 1; /* Para que empuje el footer hacia abajo si hay poco contenido */
}

.content-section h2 {
    color: #1a3a5c;
    font-size: 28px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8a020;
}

.content-section p {
    font-size: 16px;
    color: #444;
    margin-bottom: 15px;
    text-align: justify;
}

/* Visión, Misión y Objetivos */
.vision-objetivos {
    margin-top: 40px;
}

.vision-objetivos .bloque {
    background: #fff;
    border-left: 5px solid #e8a020;
    padding: 25px 30px;
    margin-bottom: 25px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    border-radius: 0 5px 5px 0;
}

.vision-objetivos .bloque h3 {
    color: #1a3a5c;
    font-size: 20px;
    margin-bottom: 10px;
}

/* =========================================
   6. ESTILOS DE PAGINA: CONVOCATORIAS
   ========================================= */
.convocatorias-container {
    max-width: 1200px;
    width: 95%;
    margin: 40px auto;
    padding: 0 30px;
    box-sizing: border-box;
}

.convocatorias-container h2 {
    color: #1a3a5c;
    font-size: 28px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8a020;
}

.convocatoria-intro-texto {
    padding: 10px 0 20px 0;
    margin-bottom: 10px;
}

.convocatoria-intro-texto p {
    color: #444;
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 10px;
}

.convocatoria-intro-texto p:last-child {
    margin-bottom: 0;
}

.convocatoria-intro-texto ul {
    margin: 5px 0 0 25px;
    color: #444;
    font-size: 16px;
    line-height: 1.8;
}

.convocatoria-intro-texto li {
    margin-bottom: 4px;
}

.convocatoria-card {
    background: #fff;
    border: 1px solid #ddd;
    border-left: 6px solid #1a3a5c;
    margin-bottom: 25px;
    overflow: hidden;
    box-shadow: 0 3px 6px rgba(0,0,0,0.06);
    border-radius: 4px;
}

.convocatoria-header {
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.convocatoria-header h3 {
    color: #1a3a5c;
    font-size: 18px;
    margin: 0;
    flex: 1;
}

.convocatoria-header .tag {
    background-color: #e8a020;
    color: #fff;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    margin-left: 15px;
    white-space: nowrap;
}

.convocatoria-toggle {
    display: inline-block;
    background-color: #1a3a5c;
    color: #fff;
    padding: 8px 18px;
    border-radius: 4px;
    font-size: 13px;
    font-weight: 600;
    margin-left: 15px;
    cursor: pointer;
    white-space: nowrap;
    border: none;
}

/* Cuerpo de la convocatoria (Oculto por defecto) */
.convocatoria-body {
    display: none; /* Oculto */
    padding: 0 30px 30px 30px;
    border-top: 1px solid #eee;
    background-color: #fff;
}

/* Clase para mostrar el cuerpo */
.convocatoria-body.open {
    display: block; /* Visible */
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.convocatoria-body h4 {
    color: #1a3a5c;
    font-size: 17px;
    margin: 25px 0 15px 0;
    padding-bottom: 5px;
    border-bottom: 1px solid #e8a020;
    font-weight: 700;
}

.convocatoria-body ul, .convocatoria-body ol {
    margin: 10px 0 15px 25px;
    color: #555;
    font-size: 15px;
    line-height: 1.8;
}

.convocatoria-body li {
    margin-bottom: 5px;
}

/* Tablas dentro de convocatorias */
.tabla-proceso {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.tabla-proceso thead th {
    background-color: #1a3a5c;
    color: #fff;
    padding: 12px 15px;
    text-align: left;
    font-weight: 600;
}

.tabla-proceso tbody td {
    padding: 12px 15px;
    border-bottom: 1px solid #eee;
    color: #555;
    vertical-align: top;
    background-color: #fff;
}

.tabla-proceso tbody tr:nth-child(even) td {
    background-color: #f9f9f9;
}

.proyecto-categoria {
    color: #1a3a5c;
    font-weight: 700;
    font-size: 15px;
    margin: 15px 0 5px 0;
    text-transform: uppercase;
    background: #f0f4f8;
    padding: 5px 10px;
    display: inline-block;
    border-radius: 3px;
}

/* =========================================
   7. ESTILOS DE PAGINA: PLAN DE ESTUDIOS
   ========================================= */
.plan-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 30px;
}

@media (max-width: 900px) {
    .plan-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 550px) {
    .plan-grid { grid-template-columns: 1fr; }
}

.semestre-card {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    display: flex;
    flex-direction: column;
}

.semestre-tesis {
    justify-content: flex-start;
}

.semestre-header {
    background-color: #1a3a5c;
    color: #fff;
    padding: 18px 15px;
    text-align: center;
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    border-bottom: 4px solid #e8a020;
}

.materia-principal {
    padding: 20px 20px 12px;
    text-align: center;
    font-size: 13px;
    color: #1a3a5c;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.5;
}

.materia-principal .creditos {
    display: block;
    font-weight: 400;
    color: #999;
    font-size: 13px;
    text-transform: none;
    letter-spacing: 0;
    margin-top: 4px;
}

.tesis-titulo {
    font-size: 16px;
    padding: 50px 20px 10px;
}

.materia-divisor {
    border: none;
    border-top: 1px solid #e8e8e8;
    margin: 0 20px 5px;
}

.materia-list {
    list-style: none;
    padding: 5px 20px 15px;
    margin: 0;
}

.materia-list li {
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
    color: #333;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.materia-list li:last-child {
    border-bottom: none;
}

.bullet-dorado {
    color: #e8a020;
    font-size: 10px;
    flex-shrink: 0;
}

.info-adicional {
    margin-top: 50px;
    background: #fff;
    padding: 30px;
    border-left: 5px solid #1a3a5c;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.info-adicional h3 {
    color: #1a3a5c;
    margin-bottom: 15px;
    font-size: 20px;
}

.info-adicional ul {
    margin-left: 20px;
    color: #555;
}

/* =========================================
   8. PAGINAS PLACEHOLDER (NUCLEO/EGRESADOS)
   ========================================= */
.placeholder-page {
    max-width: 800px;
    margin: 60px auto;
    padding: 60px 30px;
    background: #fff;
    border: 1px dashed #ccc;
    text-align: center;
    border-radius: 8px;
}

.placeholder-page h2 {
    color: #1a3a5c;
    font-size: 28px;
    margin-bottom: 15px;
}

.placeholder-page p {
    color: #888;
    font-size: 18px;
}

/* =========================================
   INVESTIGACION - TABS
   ========================================= */
.investigacion-section {
    max-width: 900px;
    margin: 50px auto;
    padding: 0 20px;
}

.investigacion-section h2 {
    color: #1a3a5c;
    font-size: 28px;
    margin-bottom: 30px;
    text-align: center;
}

.inv-tabs {
    display: flex;
    border-bottom: 3px solid #1a3a5c;
    margin-bottom: 30px;
}

.inv-tab-btn {
    padding: 12px 30px;
    background: none;
    border: none;
    font-size: 16px;
    font-weight: 600;
    color: #555;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    margin-bottom: -3px;
}

.inv-tab-btn.active {
    color: #1a3a5c;
    border-bottom-color: #e8a020;
}

.inv-tab-content {
    display: none;
    background: #fff;
    border-radius: 8px;
    padding: 40px 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    min-height: 200px;
}

.inv-tab-content.active {
    display: block;
}

.inv-placeholder {
    color: #888;
    font-size: 17px;
    text-align: center;
}

/* =========================================
   9. FOOTER (PIE DE PAGINA)
   ========================================= */
.footer {
    background-color: #1a3a5c;
    color: #ccc;
    padding: 50px 30px 20px;
    margin-top: auto; /* Empuja el footer al final */
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    flex-wrap: wrap;
}

.footer-info {
    flex: 1;
    min-width: 280px;
}

.footer-info h3 {
    color: #e8a020;
    font-size: 18px;
    margin-bottom: 20px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-info p {
    margin-bottom: 8px;
    font-size: 14px;
    color: #d0d0d0;
    line-height: 1.6;
}

.footer-info .contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: #d0d0d0;
    font-size: 14px;
}

.footer-info .contact-item .icon-label {
    color: #e8a020;
    font-weight: 700;
    min-width: 60px;
}

.footer-map {
    flex: 1;
    min-width: 300px;
    max-width: 450px;
}

.footer-map iframe {
    width: 100%;
    height: 250px;
    border: 4px solid #2a5a8c;
    border-radius: 4px;
}

.footer-bottom {
    max-width: 1200px;
    margin: 30px auto 0;
    padding-top: 20px;
    border-top: 1px solid #2a5a8c;
    text-align: center;
    font-size: 13px;
    color: #888;
}

/* =========================================
   HAMBURGUESA (visible solo en móvil)
   ========================================= */
.nav-hamburger {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    padding: 12px 18px;
    line-height: 1;
    margin-left: auto;
}

/* =========================================
   10. RESPONSIVE (CELULARES)
   ========================================= */
@media (max-width: 768px) {
    /* Barra gob.mx: padding reducido en móvil */
    .barra-gobmx {
        padding: 6px 14px;
    }

    /* Header Logos: fila compacta, sin columna */
    .header-institucional {
        gap: 12px;
        padding: 10px 12px;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .header-institucional img {
        height: 32px;
    }

    .header-institucional img.logo-ito {
        height: 36px;
    }

    /* Hamburguesa visible */
    .nav-hamburger {
        display: block;
    }

    /* Menú oculto por defecto en móvil */
    .nav-bar > ul {
        display: none;
        flex-direction: column;
        width: 100%;
    }

    /* Menú visible cuando nav tiene clase open */
    .nav-bar.open > ul {
        display: flex;
    }

    .nav-bar > ul > li > a {
        padding: 14px 20px;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        text-align: left;
    }

    /* Submenu en móvil: posición estática */
    .nav-submenu {
        position: static;
        box-shadow: none;
        border-top: none;
        background-color: #122a44;
        padding: 0;
    }

    .nav-submenu li a {
        padding: 12px 20px 12px 36px;
        color: #ccc;
        font-size: 14px;
    }

    /* Hero */
    .hero {
        height: auto;
        min-height: 300px;
    }
    
    .hero img {
        height: 300px;
    }

    .hero-overlay h1 {
        font-size: 24px;
    }
    
    .hero-overlay p {
        font-size: 16px;
    }

    /* Footer */
    .footer-content {
        flex-direction: column;
    }
    
    .footer-map {
        max-width: 100%;
        width: 100%;
    }

    /* Convocatorias Header */
    .convocatoria-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .convocatoria-toggle {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
    }

    .convocatoria-header .tag {
        margin-left: 0;
        margin-top: 5px;
        display: inline-block;
    }

    /* Asignaturas responsive */
    .asignatura-list {
        grid-template-columns: 1fr;
    }
    
    .asignatura-bloque {
        padding: 20px;
    }
}

/* ===== ESTILOS PARA LA TABLA LGAC ===== */
.lgac-section {
    margin-top: 50px;
}

.lgac-section h3 {
    color: #1a3a5c;
    font-size: 22px;
    margin-bottom: 20px;
    border-left: 5px solid #e8a020;
    padding-left: 15px;
    font-weight: 700;
}

.tabla-lgac {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid #ccc;
    font-family: 'Segoe UI', sans-serif;
    margin-bottom: 40px;
    background: #fff;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
}

.tabla-lgac th {
    background-color: #fff;
    color: #1a3a5c;
    font-weight: 700;
    text-align: center;
    padding: 15px;
    border: 1px solid #ccc;
    font-size: 15px;
}

.tabla-lgac td {
    padding: 15px;
    border: 1px solid #ccc;
    font-size: 14px;
    vertical-align: middle;
    line-height: 1.6;
}

.lgac-lista {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
}

.lgac-item {
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 0 8px 8px 0;
    border-left: 5px solid #1a3a5c;
    box-shadow: 0 2px 6px rgba(0,0,0,0.06);
    display: grid;
    grid-template-columns: 35% 1fr;
    overflow: hidden;
}

.lgac-nombre {
    padding: 20px 20px;
    font-weight: 700;
    color: #1a3a5c;
    font-size: 15px;
    line-height: 1.5;
    border-right: 1px solid #eee;
    display: flex;
    align-items: center;
}

.lgac-perfil {
    padding: 20px 20px 20px 25px;
    color: #333;
    font-size: 14px;
    line-height: 1.6;
    border-left: 4px solid #e8a020;
    display: flex;
    align-items: center;
}

/* ===== ESTILOS PARA LINEAS DE INVESTIGACION ===== */
.lineas-section {
    margin-top: 50px;
    margin-bottom: 50px;
}

.lineas-section h3 {
    color: #1a3a5c;
    font-size: 24px;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 3px solid #e8a020;
    text-align: center;
}

.lineas-bloque {
    background: #fff;
    border: 1px solid #ddd;
    border-left: 5px solid #1a3a5c;
    padding: 25px 30px;
    margin-bottom: 30px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    border-radius: 0 8px 8px 0;
}

.lineas-bloque h4 {
    color: #1a3a5c;
    font-size: 20px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8a020;
}

.lineas-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.linea-item {
    font-size: 14px;
    color: #333;
    padding: 6px 0 6px 12px;
    border-left: 3px solid #e8a020;
}

@media (max-width: 768px) {
    .lineas-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .lineas-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== BOTONES ACORDEON LGAC (Líneas de Investigación) ===== */
.lgac-btn-lista {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 40px;
}

.lgac-btn-item {
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.10);
}

.lgac-btn-titulo {
    list-style: none;
    background-color: #1a3a5c;
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 16px 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s;
}

.lgac-btn-titulo::-webkit-details-marker { display: none; }

.lgac-btn-titulo::after {
    content: '▼';
    font-size: 12px;
    color: #e8a020;
    transition: transform 0.3s;
    flex-shrink: 0;
    margin-left: 12px;
}

.lgac-btn-item[open] .lgac-btn-titulo {
    background-color: #122a44;
}

.lgac-btn-item[open] .lgac-btn-titulo::after {
    transform: rotate(-180deg);
}


.lgac-btn-desc {
    background: #f5f8fc;
    border-left: 5px solid #e8a020;
    padding: 18px 22px;
    font-size: 14px;
    line-height: 1.8;
    color: #333;
}

.lgac-btn-desc p { margin: 0; }

/* ===== ESTILOS PARA LA SECCION DE ASIGNATURAS ===== */
.asignaturas-section {
    margin-top: 50px;
    margin-bottom: 50px;
}

.asignaturas-section h3 {
    color: #1a3a5c;
    font-size: 24px;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 3px solid #e8a020;
    text-align: center;
}

.asignatura-bloque {
    background: #fff;
    border: 1px solid #ddd;
    border-left: 5px solid #1a3a5c;
    padding: 25px 30px;
    margin-bottom: 30px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.08);
    border-radius: 0 8px 8px 0;
}

.asignatura-bloque h4 {
    color: #1a3a5c;
    font-size: 20px;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8a020;
    display: flex;
    align-items: center;
    gap: 10px;
}

.asignatura-bloque h4 .icono-basicas,
.asignatura-bloque h4 .icono-optativas {
    font-size: 24px;
}

.asignatura-intro {
    margin-bottom: 20px;
}

.asignatura-intro p {
    font-size: 15px;
    color: #555;
    text-align: justify;
    margin-bottom: 10px;
    line-height: 1.7;
}

.asignatura-intro p:last-child {
    margin-bottom: 0;
}

.asignatura-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 12px;
}

.asignatura-list li {
    padding: 12px 15px;
    background: #f9f9f9;
    border-left: 3px solid #e8a020;
    color: #333;
    font-size: 14px;
    border-radius: 0 4px 4px 0;
}

/* ===== AREAS DE ASIGNATURAS OPTATIVAS ===== */
.optativas-areas {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 10px;
}

.optativa-area-item {
    background: #f9f9f9;
    border-left: 3px solid #e8a020;
    border-radius: 0 6px 6px 0;
    padding: 16px 18px;
}

.optativa-area-item h5 {
    color: #1a3a5c;
    font-size: 14px;
    font-weight: 700;
    margin: 0 0 8px;
}

.optativa-area-item p {
    color: #555;
    font-size: 13px;
    line-height: 1.6;
    margin: 0;
}

@media (max-width: 768px) {
    .optativas-areas {
        grid-template-columns: 1fr;
    }
}

/* =========================================
   12. ESTILOS DE PAGINA: CONTACTO
   ========================================= */
.contacto-section {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 30px;
    flex: 1;
}

.contacto-section h2 {
    color: #1a3a5c;
    font-size: 28px;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8a020;
}

.contacto-section > p {
    color: #555;
    font-size: 15px;
    margin-bottom: 30px;
}

.contacto-wrapper {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: start;
}

@media (max-width: 850px) {
    .contacto-wrapper {
        grid-template-columns: 1fr;
    }
}

.contacto-form {
    background: #fff;
    padding: 35px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    border-top: 4px solid #1a3a5c;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: #1a3a5c;
    font-size: 14px;
    margin-bottom: 7px;
}

.requerido {
    color: #e8a020;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    font-family: 'Segoe UI', sans-serif;
    color: #333;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1a3a5c;
    box-shadow: 0 0 0 3px rgba(26,58,92,0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

.btn-enviar {
    background-color: #1a3a5c;
    color: #fff;
    border: none;
    padding: 14px 35px;
    font-size: 15px;
    font-weight: 700;
    border-radius: 5px;
    cursor: pointer;
    border-bottom: 3px solid #e8a020;
    width: 100%;
}

.contacto-info {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    border-top: 4px solid #e8a020;
}

.contacto-info h3 {
    color: #1a3a5c;
    font-size: 18px;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

.info-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
    margin-bottom: 22px;
    padding-bottom: 22px;
    border-bottom: 1px solid #f0f0f0;
}

.info-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.info-icon {
    font-size: 22px;
    color: #e8a020;
    flex-shrink: 0;
    width: 30px;
    text-align: center;
}

.info-item strong {
    display: block;
    color: #1a3a5c;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.info-item p {
    color: #555;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

.info-item a {
    color: #2a5a8c;
    text-decoration: none;
}


.contacto-foto-bloque {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    border-top: 4px solid #e8a020;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.contacto-foto-placeholder {
    width: 100%;
    height: 450px;
    background-color: #d0d8e0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.contacto-foto-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    display: block;
}

.contacto-foto-img[src=""] {
    display: none;
}

.contacto-foto-texto {
    padding: 20px 25px;
    color: #555;
    font-size: 14px;
    line-height: 1.7;
    text-align: left;
    margin: 0;
    border-top: 1px solid #f0f0f0;
}

/* =========================================
   13. ESTILOS DE PAGINA: ACERVO
   ========================================= */
.acervo-section {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 30px;
    flex: 1;
}

.acervo-section h2 {
    color: #1a3a5c;
    font-size: 28px;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8a020;
}

.acervo-section > p {
    color: #555;
    font-size: 15px;
    margin-bottom: 30px;
}

.lista-investigacion {
    list-style: disc;
    padding-left: 25px;
    margin-top: 20px;
}

.lista-investigacion li {
    color: #333;
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 10px;
}

.tabla-acervo {
    width: 100%;
    border-collapse: collapse;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 40px;
}

.tabla-acervo thead th {
    background-color: #1a3a5c;
    color: #fff;
    padding: 12px 15px;
    text-align: left;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    border-bottom: 4px solid #e8a020;
    white-space: nowrap;
}

.tabla-acervo thead th:first-child {
    text-align: center;
}

.tabla-acervo tbody td {
    padding: 12px 15px;
    border-bottom: 1px solid #f0f0f0;
    font-size: 13px;
    color: #333;
    text-align: left;
    vertical-align: middle;
    word-break: break-word;
}

.tabla-acervo tbody td:first-child {
    text-align: center;
    font-weight: 700;
    color: #1a3a5c;
    white-space: nowrap;
}

.tabla-acervo tbody td:last-child {
    text-align: center;
}

.acervo-estatus {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.estatus-publicado {
    background-color: #d4edda;
    color: #155724;
}

.estatus-aceptado {
    background-color: #cce5ff;
    color: #004085;
}

.estatus-revision {
    background-color: #fff3cd;
    color: #856404;
}

.estatus-concluido {
    background-color: #e2e3e5;
    color: #383d41;
}

.tabla-acervo tbody tr:last-child td {
    border-bottom: none;
}


.acervo-num a {
    display: inline-block;
    background-color: #e8a020;
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    width: 32px;
    height: 32px;
    line-height: 32px;
    border-radius: 50%;
    text-decoration: none;
}

.tabla-acervo-cuatrimestral tbody td:first-child {
    text-align: center;
    font-weight: 700;
    color: #1a3a5c;
}

.tabla-acervo-cuatrimestral tbody td:nth-child(2) {
    text-align: center;
    font-weight: 600;
    color: #555;
}

.tabla-acervo-cuatrimestral .col-cuatrimestre {
    text-align: center;
    width: 120px;
}

.tabla-acervo-cuatrimestral .acervo-num {
    text-align: center;
    color: #aaa;
    font-size: 16px;
}

/* =========================================
   14. ESTILOS DE PAGINA: NUCLEO ACADEMICO
   ========================================= */
.nucleo-section {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 30px;
    flex: 1;
}

.nucleo-section h2 {
    color: #1a3a5c;
    font-size: 28px;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8a020;
}

.seccion-subtitulo {
    color: #1a3a5c;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid #e8a020;
}

.nucleo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.academico-card {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    overflow: hidden;
    text-align: center;
    padding-bottom: 20px;
}

.academico-card img {
    width: 150px;
    height: 230px;
    object-fit: cover;
    object-position: center top;
    display: block;
    margin: 20px auto 0;
    border-radius: 4px;
}

.foto-placeholder {
    width: 150px;
    height: 230px;
    background-color: #d0d8e0;
    margin: 20px auto 0;
    border-radius: 4px;
}

.academico-card h3 {
    color: #1a3a5c;
    font-size: 15px;
    font-weight: 700;
    margin: 15px 15px 8px;
    line-height: 1.3;
}

.academico-titulo {
    font-size: 13px;
    color: #666;
    margin: 2px 15px 8px;
    font-style: italic;
    line-height: 1.3;
}

.academico-correo {
    font-size: 13px;
    margin: 0 15px;
    word-break: break-all;
}

.academico-correo a {
    color: #2a5a8c;
    text-decoration: none;
}


/* ── Divisor entre secciones de planta académica ── */
.seccion-divisor {
    max-width: 1200px;
    margin: 50px auto 0;
    padding: 0 30px;
}

.seccion-divisor hr {
    border: none;
    border-top: 2px solid #e0e0e0;
    margin: 0 0 30px;
}

.seccion-divisor h2 {
    color: #1a3a5c;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 25px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8a020;
}

/* Grid de 2 columnas para secciones pequeñas */
.nucleo-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px 50px;
}

@media (max-width: 900px) {
    .nucleo-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .nucleo-grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 550px) {
    .nucleo-grid {
        grid-template-columns: 1fr;
    }
    .nucleo-grid-2 {
        grid-template-columns: 1fr;
    }
}

/* ── Links de semblanza en nombre del académico ── */
.semblanza-link {
    color: #1a3a5c;
    text-decoration: none;
    cursor: pointer;
}