/* =========================================================
   1. VARIABLES Y CONFIGURACIÓN GENERAL
========================================================= */
:root {
    --uaem-verde: #1B5E20;      /* Verde Institucional */
    --uaem-dorado: #9E8B39;     /* Dorado Institucional */
    --uaem-negro: #1a1a1a;
    --blanco: #ffffff;
    --gris-fondo: #f8fcf9;      /* Tono muy suave para secciones alternas */
    --sombra-card: 0 5px 15px rgba(0,0,0,0.08);
}

* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; 
}

body { 
    display: flex; 
    flex-direction: column; 
    min-height: 100vh; 
    background-color: var(--blanco); 
    color: #333; 
    
    /* Seguridad básica */
    user-select: none;
    -webkit-user-select: none;
    -webkit-tap-highlight-color: transparent; 
}

/* Clase de utilidad para fondos alternos */
.bg-gris { background-color: var(--gris-fondo); }

/* =========================================================
   2. PRELOADER
========================================================= */
#preloader {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: white; z-index: 9999;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    transition: opacity 0.5s ease-out, visibility 0.5s;
}
.loader-content { text-align: center; }
.loader-logo { width: 90px; margin-bottom: 20px; animation: pulseLogo 1.5s infinite ease-in-out; }
.loader-circle {
    width: 40px; height: 40px; margin: 0 auto 15px auto;
    border: 4px solid #f3f3f3; border-top: 4px solid var(--uaem-dorado);
    border-radius: 50%; animation: spinCircle 1s linear infinite;
}
.loader-content p { color: #666; font-size: 0.9rem; font-weight: 500; letter-spacing: 1px; text-transform: uppercase; }

@keyframes spinCircle { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
@keyframes pulseLogo { 0% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.05); opacity: 0.8; } 100% { transform: scale(1); opacity: 1; } }


/* =========================================================
   3. HEADER (Encabezado)
========================================================= */
header {
    background-color: var(--uaem-verde);
    color: var(--blanco);
    padding: 0.8rem 2rem;
    border-bottom: 4px solid var(--uaem-dorado);
    display: flex; justify-content: space-between; align-items: center;
    position: sticky; top: 0; z-index: 1000;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.logo-area { display: flex; align-items: center; gap: 15px; }

/* Control de logos */
.header-logo { height: 45px; width: auto; display: block; object-fit: contain; }
.logo-uaem { height: 50px; } 
.logo-brigada { filter: brightness(0) invert(1); opacity: 0.95; } 

.separador-vertical { height: 35px; width: 2px; background-color: rgba(255,255,255,0.3); margin: 0 10px; }
.titulo-mapa { font-size: 1rem; font-weight: 700; text-transform: uppercase; margin: 0; }
.detalle-2d { font-weight: 300; opacity: 0.9; }

/* --- BOTÓN SALIR (ESTILO DE PASTILLA) --- */
.btn-home-simple { 
    display: flex; 
    align-items: center; 
    gap: 8px;
    background-color: rgba(255, 255, 255, 0.15); /* Fondo transparente sutil */
    color: var(--blanco);
    padding: 8px 20px;       /* Relleno para forma de botón */
    border-radius: 50px;     /* Bordes completamente redondos */
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    border: 1px solid transparent; /* Para evitar saltos al hover */
    transition: all 0.3s ease;
}

.btn-home-simple:hover { 
    background-color: var(--uaem-dorado); /* Cambia a dorado */
    color: var(--uaem-negro);             /* Texto oscuro para contraste */
    transform: translateY(-2px);          /* Se eleva un poquito */
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.btn-home-simple i { font-size: 1.1rem; }


/* =========================================================
   4. HERO SECTION (Imagen de Administración)
========================================================= */
.hero-carrera.hero-bg-admin {
    position: relative;
    background-image: url('https://images.unsplash.com/photo-1454165804606-c3d57bc86b40?q=80&w=1470&auto=format&fit=crop');
    background-size: cover; 
    background-position: center; 
    background-attachment: fixed; /* Parallax */
    padding: 100px 20px; 
    text-align: center; 
    color: white;
}
/* Para Agronomía (si usas el mismo CSS) */
.hero-carrera.hero-bg-agro {
    position: relative;
    background-image: url('https://images.unsplash.com/photo-1625246333195-5519a124648f?q=80&w=1470&auto=format&fit=crop');
    background-size: cover; 
    background-position: center; 
    background-attachment: fixed;
    padding: 100px 20px; 
    text-align: center; 
    color: white;
}

.hero-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(27, 94, 32, 0.8); z-index: 1; }
.hero-content { position: relative; z-index: 2; max-width: 900px; margin: 0 auto; }

.hero-carrera h1 { font-size: 2.5rem; margin-bottom: 15px; text-shadow: 2px 2px 4px rgba(0,0,0,0.5); font-weight: 700; }
.linea-dorada { width: 80px; height: 5px; background: var(--uaem-dorado); margin: 0 auto 20px; border-radius: 10px; }
.mision-texto, .objetivo-texto { font-style: italic; font-size: 1.1rem; color: #f0f0f0; line-height: 1.6; }


/* =========================================================
   5. SECCIONES Y TARJETAS (Con Animación Suave)
========================================================= */
.seccion-info, .seccion-mapa, .seccion-recursos { padding: 60px 5%; max-width: 1200px; margin: 0 auto; }

.subtitulo { 
    color: var(--uaem-verde); 
    margin-bottom: 30px; 
    font-size: 1.8rem; 
    border-left: 5px solid var(--uaem-dorado); 
    padding-left: 15px; 
}

/* --- CLASES DE TARJETAS (Optimizadas para animación) --- */
/* Nota: El JS agrega opacity: 1 y translateY(0), aquí definimos la transición base */

.card-objetivo, .card-extra, .card-tarea, .egreso-box, .contenedor-mapa {
    transition: transform 0.6s cubic-bezier(0.25, 0.8, 0.25, 1), 
                opacity 0.6s cubic-bezier(0.25, 0.8, 0.25, 1), 
                box-shadow 0.3s ease; /* Transición suave para scroll y hover */
    will-change: transform, opacity; /* Optimización de rendimiento */
}

/* Grid Objetivos */
.grid-objetivos { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.card-objetivo { 
    background: white; padding: 30px; border-radius: 12px; 
    border-top: 4px solid var(--uaem-verde);
    box-shadow: var(--sombra-card); 
}
.card-objetivo:hover { transform: translateY(-5px) !important; /* !important para ganar a la animación inline si hace falta */ box-shadow: 0 10px 25px rgba(0,0,0,0.12); }
.card-objetivo h3 { color: var(--uaem-verde); margin-bottom: 15px; font-size: 1.3rem; }
.card-objetivo ul { list-style: none; }
.card-objetivo li { margin-bottom: 10px; display: flex; gap: 10px; align-items: start; line-height: 1.5; color: #444; }
.card-objetivo li i { color: var(--uaem-verde); margin-top: 4px; }

/* Grid Extras / Detalles */
.grid-extras { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 25px; }
.card-extra { 
    background: white; padding: 25px; border-radius: 12px; 
    box-shadow: var(--sombra-card); text-align: center; 
    border-top: 4px solid var(--uaem-dorado); 
    display: flex; flex-direction: column; align-items: center;
}
.card-extra:hover { transform: translateY(-5px) !important; box-shadow: 0 10px 25px rgba(0,0,0,0.12); }

.icono-top { width: 50px; height: 50px; background: var(--uaem-verde); color: white; border-radius: 50%; display: flex; justify-content: center; align-items: center; margin-bottom: 15px; font-size: 1.2rem; }
.card-extra h3 { color: var(--uaem-verde); margin-bottom: 15px; font-size: 1.2rem; }

.dato-item { width: 100%; display: flex; justify-content: space-between; border-bottom: 1px dashed #eee; padding: 8px 0; margin-bottom: 5px; font-size: 0.95rem; }
.dato-item.center-text { justify-content: center; border: none; }
.dato-item .label { color: #666; font-weight: 600; }
.dato-item .valor { color: #333; font-weight: 700; }
.valor-destacado { color: var(--uaem-verde); font-size: 1.4rem; font-weight: bold; }
.info-texto { font-size: 0.9rem; color: #666; margin: 10px 0; }
.divider-mini { width: 40px; height: 2px; background: #eee; margin: 15px auto; }
.nota-chica { font-size: 0.85rem; color: #888; font-style: italic; }

/* Grid Tareas (Agronomía / Perfil Egreso Admin) */
.grid-tareas { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.card-tarea {
    background: white; padding: 25px; border-radius: 12px;
    border-top: 4px solid var(--uaem-verde);
    box-shadow: var(--sombra-card);
    display: flex; flex-direction: column; align-items: center; text-align: center;
}
.card-tarea:hover { transform: translateY(-5px) !important; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
.card-tarea i { font-size: 2rem; color: var(--uaem-dorado); margin-bottom: 15px; }
.card-tarea p { font-size: 0.95rem; line-height: 1.4; color: #444; }

/* Tarjeta Ancha (Sedes) */
.card-full-width { grid-column: 1 / -1; align-items: flex-start; text-align: left; border-top-color: var(--uaem-verde); }
.header-sedes { display: flex; align-items: center; gap: 10px; margin-bottom: 15px; border-bottom: 2px solid #eee; width: 100%; padding-bottom: 10px; }
.header-sedes i { color: var(--uaem-dorado); font-size: 1.4rem; }
.lista-sedes { width: 100%; display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 10px 30px; list-style: none; padding: 0; }
.lista-sedes li { position: relative; padding-left: 20px; font-size: 0.95rem; color: #444; }
.lista-sedes li::before { content: '📍'; position: absolute; left: 0; font-size: 0.9rem; }

/* Perfil Egreso (Cajas) */
.egreso-container { display: flex; justify-content: center; }
.egreso-box { 
    background: white; padding: 40px; border-radius: 15px; 
    box-shadow: var(--sombra-card); text-align: center; max-width: 800px; 
    border-bottom: 5px solid var(--uaem-verde); 
}
.egreso-box h3 { color: var(--uaem-verde); margin-bottom: 15px; font-size: 1.4rem; }
.egreso-box p { color: #555; margin-bottom: 20px; }
.descripcion-egreso { margin-bottom: 30px; color: #666; font-size: 1.1rem; }

.lista-tareas { display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; }
.lista-tareas span { 
    background: #f4f4f4; padding: 10px 20px; border-radius: 30px; 
    font-weight: 600; color: var(--uaem-verde); font-size: 0.9rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05); display: flex; align-items: center; gap: 8px; transition: 0.3s; 
}
.lista-tareas span:hover { background: var(--uaem-verde); color: var(--blanco); transform: translateY(-3px); }
.lista-tareas span i { color: var(--uaem-dorado); }
.lista-tareas span:hover i { color: var(--blanco); }


/* =========================================================
   6. MAPA CURRICULAR Y DESCARGAS
========================================================= */
.contenedor-mapa { 
    position: relative; border-radius: 15px; overflow: hidden; 
    box-shadow: var(--sombra-card); cursor: pointer; max-width: 1000px; margin: 0 auto 40px; 
    border: 1px solid #ddd;
}
.img-mapa { width: 100%; display: block; transition: 0.5s; }
.contenedor-mapa:hover .img-mapa { transform: scale(1.03); filter: brightness(0.9); }
.overlay-instruccion { 
    position: absolute; bottom: 0; left: 0; width: 100%; 
    background: rgba(27, 94, 32, 0.8); color: white; text-align: center; 
    padding: 10px; opacity: 0; transition: 0.3s; font-weight: 600;
}
.contenedor-mapa:hover .overlay-instruccion { opacity: 1; }

.contenedor-descarga { text-align: center; margin-bottom: 20px; }
.btn-pdf { 
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--uaem-verde); color: white; padding: 15px 30px; 
    text-decoration: none; border-radius: 50px; font-weight: 600; 
    box-shadow: 0 4px 15px rgba(27, 94, 32, 0.3); transition: 0.3s; 
}
.btn-pdf:hover { 
    background: var(--blanco); color: var(--uaem-verde); 
    box-shadow: 0 6px 20px rgba(27, 94, 32, 0.4); 
    transform: translateY(-3px); border: 1px solid var(--uaem-verde); 
}


/* =========================================================
   7. FOOTER
========================================================= */
footer {
    background-color: #1a1a1a;
    color: #e0e0e0;
    border-top: 5px solid var(--uaem-dorado);
    padding-top: 3rem;
    margin-top: auto; 
    font-size: 0.95rem;
}

.footer-container {
    max-width: 1000px; margin: 0 auto; display: flex; flex-wrap: wrap;
    justify-content: center; gap: 4rem; padding: 0 1rem 2rem 1rem;
}

.footer-col { min-width: 250px; }
.footer-col h4 {
    color: var(--uaem-dorado); font-size: 1.1rem; margin-bottom: 1.2rem;
    position: relative; display: inline-block; text-transform: uppercase;
}
.footer-col h4::after {
    content: ''; display: block; width: 40px; height: 2px;
    background: var(--uaem-verde); margin-top: 5px;
}

.footer-link {
    display: flex; align-items: center; gap: 12px;
    color: #bbb; text-decoration: none; margin-bottom: 12px; transition: 0.3s;
}
.footer-link:hover { color: var(--uaem-dorado); transform: translateX(5px); }
.footer-text { display: flex; align-items: center; gap: 12px; color: #bbb; margin-bottom: 15px; }

.footer-copyright {
    background-color: #111; text-align: center; padding: 1.5rem;
    border-top: 1px solid #333; color: #666; font-size: 0.85rem;
}


/* =========================================================
   8. RESPONSIVE
========================================================= */
@media (max-width: 768px) {
    header { flex-direction: column; gap: 10px; padding: 15px; }
    .titulo-mapa { font-size: 0.9rem; margin-top: 5px; }
    .separador-vertical { display: none; }
    
    .hero-carrera h1 { font-size: 1.8rem; }
    .hero-carrera { padding: 60px 20px; }
    
    .lista-sedes { grid-template-columns: 1fr; }
    .footer-container { flex-direction: column; gap: 2rem; text-align: left; }
    
    .header-logo { height: 40px; }
}