/* Variables CSS pour le nouveau menu */
:root {
	--primary-blue: #1a237e;
    --sky-blue: #87ceeb;
    --light-blue: #e3f2fd;
    --dark-blue: #2c5aa0;
    --accent-orange: #ff7043;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e2e8f0;
    --dark-gray: #666;
    
    --transition: all 0.2s ease;
    --border-radius: 6px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
	--shadow: rgba(0, 0, 0, 0.1);
	
	--full-width: 1400px;
	--navbar-height: 70px;
    --footer-height: 340px;
    --space-nav-carousel: 3rem;
    --space-carousel-footer: 3rem;
	--space-hero: 4rem;
}

/* Classe utilitaire pour masquer visuellement mais garder accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip link pour l'accessibilité */
.skip-link {
    position: absolute;
    inset: -40px auto auto 6px;
    background: var(--primary-blue);
    color: var(--white);
    padding: 6px;
    text-decoration: none;
    border-radius: 0 0 4px 4px;
    z-index: 1001;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

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

body {
    font-family: 'Source Sans Pro', sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--light-gray);
	padding-top: var(--navbar-height); /* Hauteur du menu */
}

/* Navigation principale */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: transform 0.3s ease-in-out;
}

.main-nav.nav-hidden {
    transform: translateY(-100%);
}

.main-nav.nav-visible {
    transform: translateY(0);
}

/* Barre de navigation */
.nav-bar {
    background-color: var(--white);
    border-bottom: 1px solid var(--medium-gray);
    box-shadow: var(--shadow-sm);
}

.nav-container {
	box-sizing: content-box;
    max-width: var(--full-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    padding: 0 1rem;
    height: var(--navbar-height);
}

/* Logo + Accueil séparés */
.nav-home {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-right: 1rem;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    padding: 0.5rem 0.5rem 0.5rem 0;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.logo-link:hover {
    transform: scale(1.05);
    outline: none;
}

.nav-logo {
    height: 40px;
    width: auto;
}

.home-nav-link {
    /* Hérite des styles de .nav-link définis plus bas */
}

/* Menu desktop */
.desktop-menu {
    display: flex;
	align-items: baseline;
    list-style: none;
    gap: 0.5rem;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-button,
.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-blue);
    text-decoration: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    height: 48px; /* Hauteur fixe pour uniformité */
    box-sizing: border-box;
}

.nav-button:hover,
.nav-link:hover {
    background-color: var(--light-blue);
    outline: none;
}

/* État ouvert - différent du hover */
.nav-button[aria-expanded="true"] {
    text-shadow: 0.5px 0 0 currentColor;
}

/* Chevrons du menu principal */
.nav-chevron {
    transition: transform var(--transition);
    opacity: 0.7;
}

.nav-button[aria-expanded="true"] .nav-chevron {
    transform: rotate(180deg);
    opacity: 1;
}

/* Container des sous-menus */
.submenu-container {
    position: relative;
}

/* Panneaux de sous-menus */
.submenu-panel {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    border-bottom: 1px solid var(--medium-gray);
    box-shadow: var(--shadow-md);
    display: none;
    z-index: 100;
}

.submenu-panel.active {
    display: block;
}

.submenu-content {
	box-sizing: content-box;
    max-width: var(--full-width);
    margin: 0 auto;
    padding: 2rem 1rem;
    position: relative;
}

/* Bouton de fermeture */
.submenu-close {
    position: absolute;
    top: 1.5rem;
    right: 1rem;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--primary-blue);
    border-radius: var(--border-radius);
    transition: var(--transition);
	height: 46px;
	width: 46px;
}

.submenu-close:hover,
.submenu-close:focus {
    color: var(--accent-orange); /*var(--primary-blue);*/
    outline: none;
}

/* Colonnes des sous-menus - largeur uniforme */
.submenu-columns {
    display: grid;
    gap: 2rem;
	padding-right: 46px;
}

/* Toujours 4 colonnes de même largeur, mais certaines peuvent être vides */
.submenu-columns {
    grid-template-columns: repeat(4, 1fr);
}

/* Pour Lycée : utilise seulement les 3 premières colonnes */
#submenu-lycee .submenu-columns {
    grid-template-columns: repeat(4, 1fr);
}

#submenu-lycee .submenu-column:nth-child(4) {
    display: none; /* Cache la 4ème colonne pour Lycée */
}

.submenu-column {
    position: relative;
}

.submenu-column:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 0;
    right: -1rem;
    bottom: 0;
    width: 1px;
    background-color: var(--medium-gray);
}

/* Titres des colonnes */
.submenu-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
}

/* Espacement supplémentaire pour EPS */
.submenu-title-spaced {
    margin-top: 2rem;
}

/* Listes des sous-menus */
.submenu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.submenu-list li {
    margin-bottom: 0.25rem;
}

.submenu-link {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--dark-gray);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 0.95rem;
}

.submenu-link:hover,
.submenu-link:focus {
    background-color: var(--light-blue);
    color: var(--primary-blue);
    outline: none;
    font-weight: 500;
}

/* Bouton hamburger (mobile) */
.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.hamburger:hover,
.hamburger:focus {
    outline: none;
}

.hamburger-line {
    width: 24px;
    height: 3px;
    margin: 3px 0;
    background-color: var(--primary-blue);
    transition: var(--transition);
}

.hamburger[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6.25px, 6.25px);
}

.hamburger[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6.25px, -6.25px);
}

/* Menu mobile */
.mobile-menu {
    display: none;
    background-color: var(--white);
    border-top: 1px solid var(--medium-gray);
    box-shadow: var(--shadow-md);
    overflow-y: auto;
}

.mobile-menu.active {
    display: block;
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav-item {
    border-bottom: 1px solid var(--medium-gray);
}

.mobile-nav-item:last-child {
    border-bottom: none;
}

.mobile-nav-button,
.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 1rem;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--primary-blue);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.mobile-nav-button:hover,
.mobile-nav-button:focus,
.mobile-nav-link:hover,
.mobile-nav-link:focus {
    background-color: var(--light-blue);
    outline: none;
}

/* Chevrons mobile */
.mobile-chevron {
    transition: transform var(--transition);
    opacity: 0.7;
}

.mobile-nav-button[aria-expanded="true"] .mobile-chevron {
    transform: rotate(180deg);
}

/* Sous-menus mobile */
.mobile-submenu {
    display: none;
    background-color: var(--light-gray);
    padding: 0;
}

.mobile-submenu.active {
    display: block;
}

.mobile-submenu-section {
    padding: 1rem;
    border-bottom: 1px solid var(--medium-gray);
}

.mobile-submenu-section:last-child {
    border-bottom: none;
}

.mobile-submenu-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
	padding-left: 0.75rem;
}

.mobile-submenu-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-submenu-list li {
    margin-bottom: 0.25rem;
}

.mobile-submenu-link {
    display: block;
    padding: 0.5rem 2rem;
    color: var(--dark-gray);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 1rem;
}

.mobile-submenu-link:hover,
.mobile-submenu-link:focus {
    background-color: var(--white);
    color: var(--primary-blue);
    outline: none;
}


/* Focus visible amélioré */
.nav-button:focus-visible,
.nav-link:focus-visible,
.logo-link:focus-visible,
.submenu-link:focus-visible,
.mobile-nav-button:focus-visible,
.mobile-nav-link:focus-visible,
.mobile-submenu-link:focus-visible {
    background-color: var(--light-blue);
    outline-offset: 2px;
}

*:focus-visible {
    outline: 2px solid var(--accent-orange);
}

/* Partie 6: Footer */
.footer {
    background: var(--primary-blue);
    color: var(--white);
    padding: 3rem 0 1rem 0;
	margin: 0;
}

.footer-container {
	box-sizing: content-box;
    max-width: var(--full-width);
	margin: 0 auto;
	padding: 0 20px;
}

.footer-brand {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-logo-img {
	background: var(--white);
    height: 48px;
    width: auto;
	padding: 4px;
	vertical-align: middle;
}

.footer-school-name {
    font-family: 'Lexend', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--white);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    color: var(--white);
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-link:hover {
    background: var(--sky-blue);
    color: var(--primary-blue);
    transform: translateY(-2px);
}

.institutional-logos {
    display: flex;
    justify-content: center;
    align-items: center;
	flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 0 0 2rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.logo-france, .logo-erasmus {
	display: flex;
    justify-content: center;
    align-items: center;
	flex-wrap: wrap;
    gap: 2rem;
	padding: 0;
	margin: 0;
}

.logo-placeholder {
    height: 60px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.logo-placeholder-large {
	height: 110px;
}

.logo-placeholder-nobackground {
    background-color: var(--primary-blue);
}

.logo-placeholder-white {
    background: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.logo-placeholder-Wpadding {
    background: white;
}

.institutional-logo {
    height: 100%;
    min-width: 85px;
    width: auto;
    object-fit: contain;
    /* Pas de filtre - on garde les couleurs originales */
}

.legal-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.legal-link {
    color: var(--white);
    text-decoration: none;
    font-size: 0.9rem;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.legal-link:hover {
    opacity: 1;
    text-decoration: underline;
}



/* Responsive */
@media (min-width: 1025px) {
    .mobile-menu {
        display: none !important;
    }
}

/* Responsive pour les sous-menus desktop */
@media (max-width: 1400px) {
    .nav-container,
    .submenu-content {
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }
}

@media (max-width: 1024px) {
    .desktop-menu {
        display: none !important;
    }
    
    .hamburger {
        display: flex;
    }
    
    .submenu-container {
        display: none !important;
    }
	
	.nav-container {
		justify-content: space-between;
	}
	
	.footer {
		margin: 0;
	}
}

@media screen and (max-width: 768px) {
    .footer-brand {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .institutional-logos {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .legal-links {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }
}

/* Accessibilité et focus */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
    }
}