/* ============================================
   Styles du menu de navigation - Thème Evensia
   ============================================ */

/* Variables CSS pour les couleurs du thème Evensia */
:root {
    --primary-blue: #4f46e5;
    --primary-purple: #7c3aed;
    --dark-blue: #2C3E50;
    --light-blue: #eef2ff;
    --accent-teal: #10b981;
    --neutral-gray: #6B7280;
    --light-gray: #F8FAFC;
    --white: #FFFFFF;
    --gradient-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #4f46e5 100%);
    --shadow-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-large: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* Styles de base du header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    box-shadow: var(--shadow-light);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-medium);
}

/* Conteneur de navigation */
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.75rem 2rem;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    font-weight: 700;
    color: var(--dark-blue);
    transition: var(--transition);
}

.logo:hover {
    opacity: 0.9;
}

.logo-image {
    height: 40px;
    width: auto;
    transition: var(--transition);
}

/* Liens de navigation */
.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-blue);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a:hover {
    color: var(--primary-blue);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    border-radius: 2px;
}

.nav-links a:hover::after,
.nav-links a:focus::after {
    width: 100%;
}

/* Bouton de menu mobile */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark-blue);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: var(--transition);
    z-index: 1002;
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:focus {
    background-color: rgba(0, 0, 0, 0.05);
    outline: none;
}

.mobile-menu-toggle .hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--dark-blue);
    margin: 5px 0;
    transition: var(--transition);
    border-radius: 2px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

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

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Styles du menu mobile */
@media (max-width: 1024px) {
    .mobile-menu-toggle {
        display: block;
    }
    
    .nav-container {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 320px;
        height: 100vh;
        background: white;
        z-index: 1001;
        padding: 6rem 2rem 2rem;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease-in-out;
    }
    
    .nav-container.active {
        right: 0;
    }
    
    .nav-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        width: 100%;
    }
    
    .nav-links li {
        width: 100%;
        opacity: 0;
        transform: translateX(20px);
        transition: all 0.3s ease-in-out;
    }
    
    .nav-links a {
        display: block;
        width: 100%;
        padding: 0.75rem 1rem;
        border-radius: 6px;
        transition: all 0.2s ease;
    }
    
    .nav-links a:hover,
    .nav-links a:focus {
        background-color: var(--light-blue);
        color: var(--primary-blue);
    }
    
    .nav-links a::after {
        display: none;
    }
    
    /* Animation des éléments du menu mobile */
    .nav-container.active .nav-links li {
        opacity: 1;
        transform: translateX(0);
    }
    
    .nav-container.active .nav-links li:nth-child(1) { transition-delay: 0.1s; }
    .nav-container.active .nav-links li:nth-child(2) { transition-delay: 0.15s; }
    .nav-container.active .nav-links li:nth-child(3) { transition-delay: 0.2s; }
    .nav-container.active .nav-links li:nth-child(4) { transition-delay: 0.25s; }
    .nav-container.active .nav-links li:nth-child(5) { transition-delay: 0.3s; }
}

/* Styles pour les écrans très larges */
@media (min-width: 1600px) {
    .nav {
        padding: 1rem 0;
    }
    
    .nav-links {
        gap: 2.5rem;
    }
    
    .nav-links a {
        font-size: 1.05rem;
    }
}

/* Style spécifique pour le bouton de retour */
.nav-link i {
    margin-right: 0.5rem;
    font-size: 0.9em;
    transition: transform 0.2s ease;
}

.nav-link:hover i {
    transform: translateX(-2px);
}

/* Animation subtile au chargement de la page */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.header {
    animation: fadeInDown 0.5s ease-out forwards;
}