:root {
    --color-primario: #1f4586;
    --color-secundario: #1871ac;
    --color-terciario: #ffffff;
    --fondo-oscuro-base: #0e1e3b;
    --fondo-oscuro-superficie: #142a52;
    
    --color-blanco: #ffffff;
    
    --textura-fondo: url(../img/fondo.png);
}

/* ========================================================= */
/* 0. FONDO FIJO */
/* ========================================================= */

.fondo-fijo {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;     
    
    background-image: var(--textura-fondo);
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
}


/* ========================================================= */
/* BASE & TIPOGRAFÍA */
/* ========================================================= */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--color-terciario);  
    background-color: transparent;  
    overflow-x: hidden; 
}

.no-scroll {
    overflow: hidden;
}

section, footer {
    background-color: var(--fondo-oscuro-base); 
}


.container {
    width: 90%;
    max-width: 1600px;  
    margin: 0 auto;
}

h1, h2, h3 {
    margin-bottom: 0.5em;
    color: var(--color-blanco);  
}

h2 {
    font-size: 3.2em;  
    text-align: center;
    margin-bottom: 15px;
    font-weight: 700;
}

.subtitle {
    text-align: center;
    color: var(--color-terciario);  
    margin-bottom: 70px;     
    font-size: 1.2em;
}

a {
    text-decoration: none;
    color: var(--color-secundario);
    transition: color 0.3s;
}

/* ========================================================= */
/* BOTONES Y CTAs (Mantenemos la estructura de index.css) */
/* ========================================================= */

.btn-primario, .btn-secundario {
    display: inline-block;
    padding: 16px 40px; 
    border-radius: 6px; 
    font-weight: 600;
    text-align: center;
    transition: background-color 0.3s, transform 0.2s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primario {
    background: var(--color-primario);
    color: var(--color-terciario);  
    margin-top: 25px;
    font-size: 1.2em;
    box-shadow: 0 4px 10px rgba(31, 69, 134, 0.4);
}

.btn-primario:hover {
    background: var(--color-secundario);
    color: var(--color-terciario);
    box-shadow: 0 6px 15px rgba(24, 113, 172, 0.6);
}

.btn-secundario {
    background: var(--color-secundario);
    color: var(--fondo-oscuro-base);
    margin-top: 35px;
    font-size: 1.1em;
}

.btn-secundario:hover {
    background: var(--color-primario);
    color: var(--color-terciario);
}

/* ========================================================= */
/* 1. NAVEGACIÓN (ENCABEZADO) UNIFORME */
/* ========================================================= */

.encabezado-principal {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 50px;
    background: var(--fondo-oscuro-base);   
    box-shadow: 0 2px 5px rgba(31, 69, 134, 0.2);   
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo-img {
    max-height: 45px;   
    width: auto;
    display: block;
}

.navegacion-principal { 
    flex-grow: 1; 
    display: flex;
    justify-content: center; 
}

.navegacion-principal ul {
    list-style: none;
    display: flex;
    align-items: center;     
    gap: 0; 
}

.navegacion-principal ul li a {
    padding: 12px 18px; 
    display: block;
    color: var(--color-terciario);  
    font-weight: 500;
    white-space: nowrap;      
    transition: color 0.3s;
}

.navegacion-principal ul li a:hover, 
.navegacion-principal ul li a.active {
    color: var(--color-secundario);
    border-bottom: 3px solid var(--color-secundario);   
}

.nav-idiomas-item-movil {
    display: none; 
}

/* ========================================================= */
/* 1.1 ÍCONO DE MENÚ (HAMBURGUESA) - Estilos Base */
/* ========================================================= */
.menu-toggle {
    display: none; /* Oculto por defecto en escritorio */
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;  
}

.menu-toggle .bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--color-secundario);
    transition: all 0.3s ease-in-out;
}

/* ========================================================= */
/* 1.2 SELECTOR DE IDIOMA (UNIFICADO) */
/* ========================================================= */

.selector-idioma-escritorio {
    display: flex;
}

.selector-idioma-movil {
    display: none;
}

.selector-idioma {
    display: flex;
    align-items: center;
    margin-left: 20px; 
    z-index: 10; 
}

.lang-btn {
    background: transparent;
    color: var(--color-terciario);
    border: 1px solid var(--color-secundario);
    padding: 8px 12px;
    font-size: 0.9em;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
    text-transform: uppercase;
    font-family: inherit; 
    line-height: 1; 
}

#btn-es, #btn-es-movil {
    border-radius: 4px 0 0 4px;
    border-right: none; 
}

#btn-en, #btn-en-movil {
    border-radius: 0 4px 4px 0;
}

.lang-btn.active {
    background-color: var(--color-secundario);
    color: var(--fondo-oscuro-base); 
    border-color: var(--color-secundario);
    cursor: default; 
}

.lang-btn:not(.active):hover {
    background-color: var(--color-primario);
    border-color: var(--color-primario);
}


/* ========================================================= */
/* 2. PORTADA / HERO (Página de Contacto) */
/* ========================================================= */

.seccion-portada {
    background: url(../img/portada-contacto.jpg) no-repeat center center/cover;
    min-height: 400px;
    display: flex;
    align-items: center;
    color: var(--color-terciario);
    text-shadow: 1px 1px 8px rgba(0, 0, 0, 0.7);     
    position: relative;
    padding: 0;
    border-bottom: 3px solid var(--color-primario); 
}

.seccion-portada::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(14, 30, 59, 0.75); 
    z-index: 1;
}

.contenido-portada {
    padding: 0 50px;
    z-index: 2;
    width: 90%;
    margin: 0 auto;
}

.contenido-portada h1 {
    font-size: 3.5em;   
    margin-bottom: 15px;
    color: var(--color-terciario);  
    font-weight: 900;
    line-height: 1.1;
}

.contenido-portada p {
    font-size: 1.4em;   
    font-weight: 300;
    color: var(--color-terciario);
}

/* ========================================================= */
/* 3. SECCIÓN CONTACTO (Datos y Mapa) */
/* ========================================================= */

.seccion-contacto {
    padding: 100px 0;
    background: none;
}

.contacto-grilla {
    display: grid;
    grid-template-columns: 1fr; 
    gap: 40px;
    padding: 40px 0;
    width: 90%;
    margin: 0 auto; 
}


.columna-info {
    background: var(--fondo-oscuro-superficie);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.columna-info h3 {
    margin-top: 0;
    margin-bottom: 30px;
    color: var(--color-blanco); /* Sigue el color de index.css */
    font-size: 2em;
    text-align: center; 
}

.datos-grid {
    display: grid;
    grid-template-columns: 1fr 1fr; 
    gap: 20px;
    margin-bottom: 30px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    color: var(--color-terciario);
}

.info-item i {
    font-size: 1.5em;
    color: var(--color-secundario); /* Usamos color secundario como en index.css */
    margin-right: 15px;
    min-width: 25px;
}

.info-item p {
    margin: 0;
}

.mapa-contenedor {
    margin-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
}

.mapa-contenedor h4 {
    color: var(--color-terciario);
    margin-bottom: 15px;
    font-size: 1.4em;
}

.mapa-contenedor iframe {
    width: 100%;
    border: 2px solid var(--color-primario);       
    border-radius: 4px;
    display: block;
}


/* ========================================================= */
/* 6. PIE DE PÁGINA (FOOTER) */
/* ========================================================= */

footer {
    background: var(--fondo-oscuro-base); 
    color: var(--color-terciario);
    padding: 50px 0 20px;
}

footer .container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--color-primario); 
}

.pie-info h3 {
    color: var(--color-terciario);
    margin-bottom: 15px;
    font-size: 1.6em;
}

.pie-enlaces h4 {
    color: var(--color-secundario); 
    margin-bottom: 10px;
}

.pie-enlaces a {
    color: var(--color-terciario);
    display: block;
    padding: 5px 0;
}

.pie-enlaces a:hover {
    color: var(--color-secundario);
}

.pie-social h4 {
    color: var(--color-secundario); 
    margin-bottom: 10px;
}

.pie-social a {
    color: var(--color-terciario);
    font-size: 2em; 
    margin-right: 20px;
}

.pie-social a:hover {
    color: var(--color-secundario);
}

.copyright {
    text-align: center;
    margin-top: 30px;
    font-size: 0.9em;
    color: var(--color-terciario);
}


/* ========================================================= */
/* RESPONSIVE AJUSTADO (Móviles) */
/* ========================================================= */

@media (max-width: 900px) {
    
    .encabezado-principal {
        padding: 15px 20px;
    }

    .logo-img {
        max-height: 35px; 
    }
    
    .menu-toggle {
        display: block; 
    }
    
    .selector-idioma-escritorio {
        display: none !important; 
    }
    
    .nav-idiomas-item-movil {
        display: block; 
        width: 100%;
        text-align: center;
        padding: 20px 0 30px; 
        border-bottom: 1px solid var(--fondo-oscuro-superficie); 
    }

    .selector-idioma-movil {
        display: flex; 
        justify-content: center;
        width: 100%;
        margin: 0;
        padding: 0;
    }

    .navegacion-principal {
        flex-grow: 0; 
        position: fixed;
        top: 65px; 
        right: 0; 
        left: auto; 
        width: 100%; 
        height: 100vh; 
        background: var(--fondo-oscuro-base); 
        transform: translateX(100%); 
        transition: transform 0.4s ease-in-out;
        z-index: 999; 
        overflow-y: auto; 
    }

    .navegacion-principal.menu-activo {
        transform: translateX(0); 
    }
    
    .navegacion-principal ul {
        flex-direction: column; 
        padding: 20px 0; 
        align-items: stretch;
    }
    
    .navegacion-principal ul li a {
        padding: 18px 25px; 
        text-align: center;
        border-bottom: 1px solid var(--fondo-oscuro-superficie);        
        font-size: 1.1em;
    }

    .navegacion-principal ul li a:hover, .navegacion-principal ul li a.active {
        border-bottom: none;        
        background-color: var(--fondo-oscuro-superficie);
    }
    
    .menu-toggle.menu-activo .bar:nth-child(2) { opacity: 0; }
    .menu-toggle.menu-activo .bar:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .menu-toggle.menu-activo .bar:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }


    .seccion-portada {
        min-height: 300px;
    }
    
    .contenido-portada h1 {
        font-size: 2.5em;
    }
    
    .contenido-portada p {
        font-size: 1.2em;
    }
    
    .seccion-contacto {
        padding: 60px 0;
    }

    .datos-grid {
        grid-template-columns: 1fr;
    }

    footer .container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .pie-social a {
        margin: 0 10px; 
    }
}