:root {
    /* Colores principales */
    --verde-principal: #138b3c;
    --verde-oscuro: #0b5c28;
    --verde-muy-claro: #22c55e;

    /* Colores de texto y fondos */
    --gris-texto: #222222;
    --gris-medio: #6b7280;
    --gris-suave: #e5e7eb;
    --blanco: #ffffff;
    --fondo-principal: #fafafa;

    /* Sombras */
    --sombra-suave: 0 8px 18px rgba(0,0,0,0.06);
    --sombra-fuerte: 0 12px 24px rgba(0,0,0,0.12);
    --sombra-nav: 0 2px 6px rgba(0,0,0,0.15);

    /* Tipografía */
    --fuente-base: system-ui, -apple-system, 
        BlinkMacSystemFont, "Segoe UI", sans-serif;
}

/* Reset y base */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--fuente-base);
    background: var(--fondo-principal);
    color: var(--gris-texto);
    line-height: 1.6;
}

.icono_universal {
    font-size: 3.5rem;
    color: var(--verde-principal);
}

.letra-666{
    color: #666;
}

/* ==========================================================================
   HEADER Y NAVEGACIÓN - COMPLETO Y HOMOGÉNEO
   ========================================================================== */

/* HEADER PRINCIPAL */
.header_pagina_header_top {
    background: var(--blanco);
    border-bottom: 1px solid var(--gris-suave);
}

.header_pagina_header_contenido {
    max-width: 1150px;
    margin: 0 auto;
    padding: 0.8rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header_pagina_header_logo {
    height: 70px;
    width: auto;
}

.header_pagina_header_texto h1 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    color: var(--gris-texto);
}

.header_pagina_header_texto p {
    font-size: 0.9rem;
    color: var(--gris-medio);
    margin: 0;
}

/* BARRA PRINCIPAL - VERDE PRINCIPAL */
.header_pagina_barra_menu {
    background: var(--verde-principal);
    box-shadow: var(--sombra-nav);
    position: sticky;
    top: 0;
    z-index: 100;
}

/* Ocultamos botones de control móvil por defecto en Escritorio */
.header_pagina_barra_menu > .header_pagina_nav_toggle {
    display: none !important;
}

/* ==========================================================================
   NIVELES DE MENÚ EN ESCRITORIO (Pantallas grandes > 992px)
   ========================================================================== */
@media (min-width: 993px) {
    .header_pagina_menu_contenedor {
        max-width: 1150px;
        margin: 0 auto;
        padding: 0 1.5rem;
        display: flex;
        flex-direction: row;
        align-items: center;
        gap: 1.5rem;
    }

    /* ÍTEMS PRINCIPALES DEL MENÚ */
    .header_pagina_item_menu,
    .header_pagina_menu_contenedor > a {
        position: relative;
        padding: 0.9rem 0;
        font-size: 0.93rem;
        color: var(--blanco);
        text-decoration: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 0.3rem;
        white-space: nowrap;
        transition: all 0.25s ease;
    }

    .header_pagina_item_menu::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0.25rem;
        width: 0;
        height: 2px;
        background: var(--blanco);
        border-radius: 999px;
        transition: width 0.25s ease-out;
    }

    .header_pagina_item_menu:hover::after,
    .header_pagina_item_menu.activo::after {
        width: 70%;
    }

    .header_pagina_desplegable {
        position: relative;
    }

    /* SUBMENÚ PRINCIPAL (NIVEL 2) */
    .header_pagina_submenu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        min-width: 260px;
        max-width: 280px;
        background: var(--verde-oscuro);
        border-radius: 8px;
        box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
        margin-top: 0px;
        padding: 8px 0;
        overflow: visible;
        z-index: 1000;
        font-size: 0.9rem;
    }

    .header_pagina_desplegable:hover > .header_pagina_submenu {
        display: block;
    }

    /* ÍTEMS DEL SUBMENÚ */
    .header_pagina_submenu_titulo,
    .header_pagina_submenu a {
        display: block;
        padding: 12px 20px;
        color: #e8f5e8;
        text-decoration: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        position: relative;
        transition: all 0.25s ease;
        white-space: nowrap;
    }

    .header_pagina_submenu_titulo:last-child,
    .header_pagina_submenu a:last-child {
        border-bottom: none;
    }

    .header_pagina_submenu_titulo:hover,
    .header_pagina_submenu a:hover {
        background: rgba(255, 255, 255, 0.15);
        color: #ffffff;
        padding-left: 28px;
        box-shadow: inset 3px 0 0 rgba(255, 255, 255, 0.3);
    }

    /* TÍTULOS DESPLEGABLES (Padres de submenús anidados) */
    .header_pagina_titulo_desplegable {
        font-weight: 600;
        background: rgba(255, 255, 255, 0.08) !important;
        border-left: 4px solid var(--verde-muy-claro, #4a9a4a);
    }

    .header_pagina_titulo_desplegable:hover {
        background: rgba(255, 255, 255, 0.2) !important;
        box-shadow: inset 4px 0 0 var(--blanco) !important;
    }

    /* SUBMENÚS ANIDADOS (NIVELES 3) */
    .header_pagina_submenu_item_desplegable {
        position: relative;
    }

    .header_pagina_submenu_anidado {
        display: none;
        position: absolute;
        top: 0;
        left: 100%;
        min-width: 240px;
        background: var(--verde-principal);
        margin: 0;
        padding-bottom: 4px;
        border: 3px solid var(--verde-oscuro);
        border-top: 3px solid var(--verde-muy-claro, #4a9a4a);
        box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
        overflow: hidden;
        animation: fadeInSubmenu 0.2s ease-out;
        z-index: 1001;
    }

    .header_pagina_submenu_item_desplegable:hover > .header_pagina_submenu_anidado {
        display: block;
    }

    .header_pagina_submenu_anidado .header_pagina_submenu_titulo {
        padding: 10px 20px !important;
        font-size: 0.88rem;
        background: transparent !important;
        color: var(--blanco) !important;
        border-bottom: none !important;
        border-radius: 0;
        transition: all 0.3s ease;
    }

    .header_pagina_submenu_anidado .header_pagina_submenu_titulo:hover {
        background: rgba(255, 255, 255, 0.25) !important;
        box-shadow: inset 4px 0 0 var(--verde-principal) !important;
        transform: scale(1.05);
    }

    /* ÍCONO DESPLEGABLE ROTACIÓN */
    .header_pagina_icono_desplegable {
        font-size: 0.7rem;
        opacity: 0.9;
        transition: transform 0.25s ease;
    }

    .header_pagina_desplegable:hover .header_pagina_icono_desplegable {
        transform: rotate(180deg);
    }
}

/* ==========================================================================
   MAQUETACIÓN Y DESPLEGABLES PARA DISPOSITIVOS MÓVILES (<= 992px)
   ========================================================================== */
@media (max-width: 992px) {
    
    /* Fondo general del bloque de navegación abierto */
    .header_pagina_barra_menu.open {
        background: var(--verde-principal) !important;
        min-height: 100vh;
    }

    /* Botón X superior */
    .header_pagina_barra_menu > .header_pagina_nav_toggle {
        display: block !important;
        background: var(--verde-principal) !important;
        border: none;
        color: var(--blanco) !important;
        font-size: 1.8rem;
        padding: 1.2rem 24px; /* Sincronizado con el margen lateral de 24px */
        cursor: pointer;
        width: 100%;
        text-align: left;
        box-sizing: border-box;
        font-weight: bold;
        z-index: 9999 !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    }

    /* Contenedor vertical de los enlaces */
    .header_pagina_barra_menu .header_pagina_menu_contenedor {
        display: none; 
        flex-direction: column;
        background: var(--verde-principal) !important;
        width: 100%;
        padding: 0 !important;
        box-sizing: border-box;
    }

    .header_pagina_barra_menu.open .header_pagina_menu_contenedor {
        display: flex !important;
    }

    /* --- NIVEL 1: ALINEACIÓN PERFECTA (Inicio, Departamentos, Erasmus+, etc.) --- */
    .header_pagina_menu_contenedor > a.header_pagina_item_menu {
        display: flex;
        align-items: center;
        width: 100%;
        padding: 16px 24px !important; /* Margen exacto de 24px a la izquierda para alineación impecable */
        color: var(--blanco) !important;
        font-size: 1.1rem !important;
        font-weight: 700 !important; /* Letras consistentes y profesionales */
        text-decoration: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.15) !important;
        box-sizing: border-box;
    }

    /* --- NIVEL 1: DISPARADORES CON SUBMENÚ (Nuestro centro, Secretaría...) --- */
    .header_pagina_desplegable {
        display: block !important;
        width: 100%;
        position: static !important; /* Resetea herencias flotantes */
        box-sizing: border-box;
    }

    .header_pagina_desplegable_trigger {
        display: flex;
        justify-content: space-between;
        align-items: center;
        width: 100%;
        padding: 16px 24px !important; /* Margen de 24px idéntico a 'Inicio' */
        color: var(--blanco) !important;
        font-size: 1.1rem !important;
        font-weight: 700 !important;
        cursor: pointer;
        border-bottom: 1px solid rgba(255, 255, 255, 0.15) !important;
        box-sizing: border-box;
        user-select: none;
    }

    /* Rotación de flechas Nivel 1 */
    .header_pagina_desplegable.abierto > .header_pagina_desplegable_trigger .header_pagina_icono_desplegable {
        transform: rotate(180deg);
    }

    /* --- NIVEL 2: CONTENEDOR INTERNO (Avisos, Matriculación, AMPA...) --- */
    .header_pagina_submenu {
        display: none;
        flex-direction: column;
        width: 100% !important;
        position: static !important; /* Fuerza flujo vertical natural */
        background: rgba(0, 0, 0, 0.1) !important; /* Fondo sutil uniforme */
        box-shadow: none !important;
        padding: 0 !important;
        border-radius: 0 !important;
        max-width: 100% !important;
        box-sizing: border-box;
    }

    .header_pagina_desplegable.abierto > .header_pagina_submenu {
        display: flex !important;
    }

    /* Elementos de Nivel 2 */
    .header_pagina_submenu a,
    .header_pagina_submenu .header_pagina_submenu_titulo {
        display: flex !important;
        justify-content: space-between;
        align-items: center;
        width: 100% !important;
        padding: 14px 24px 14px 44px !important; /* Margen de 44px (24px base + 20px sangría) */
        color: #e8f5e8 !important;
        font-size: 1.02rem !important;
        font-weight: 600 !important;
        text-decoration: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
        box-sizing: border-box;
        background: transparent !important; /* Elimina cualquier residuo flotante */
        position: relative;
    }

    /* --- NIVEL 3: CONTENEDORES ANIDADOS (Matriculación ESO, Bachillerato...) --- */
    .header_pagina_submenu_item_desplegable {
        display: block !important;
        width: 100% !important;
        position: static !important;
        padding: 0 !important;
        box-sizing: border-box;
    }

    .header_pagina_submenu_anidado {
        display: none;
        flex-direction: column;
        width: 100% !important;
        position: static !important;
        background: rgba(0, 0, 0, 0.15) !important; /* Capa interna ligeramente más oscura */
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        box-sizing: border-box;
    }

    /* Apertura de Nivel 3 */
    .header_pagina_submenu_item_desplegable.abierto_anidado > .header_pagina_submenu_anidado {
        display: flex !important;
    }

    /* Rotación de flecha interna Nivel 2 */
    .header_pagina_submenu_item_desplegable.abierto_anidado > .header_pagina_submenu_titulo .header_pagina_icono_desplegable {
        transform: rotate(180deg);
    }

    /* Enlaces finales del Nivel 3 */
    .header_pagina_submenu_anidado a {
        display: flex !important;
        width: 100% !important;
        padding: 13px 24px 13px 64px !important; /* Margen de 64px (44px + 20px segunda sangría) */
        font-size: 0.98rem !important;
        color: #d1ebd1 !important;
        font-weight: 500 !important;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
        background: transparent !important;
    }

    /* --- HOVERS GLOBALES --- */
    .header_pagina_submenu a:hover,
    .header_pagina_submenu_anidado a:hover {
        background: rgba(255, 255, 255, 0.1) !important;
        color: var(--blanco) !important;
    }

    .header_pagina_icono_desplegable {
        margin-left: auto;
        opacity: 0.8;
        font-size: 0.8rem;
        transition: transform 0.2s ease;
        display: inline-block;
    }
}

/* Animación opcional para escritorio */
@keyframes fadeInSubmenu {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}