/**
 * Navigation System - Styles
 */

/* Variables CSS */
:root {
    --nav-height: 70px;
    --nav-bg-start: #6366f1;
    --nav-bg-middle: #8b5cf6;
    --nav-bg-end: #d946ef;
    --nav-bg: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --nav-shadow: 0 4px 20px rgba(99, 102, 241, 0.15);
    --nav-text: #ffffff;
    --nav-hover: rgba(255, 255, 255, 0.15);
    --nav-active: rgba(255, 255, 255, 0.25);
    --nav-border: rgba(255, 255, 255, 0.2);
    --nav-transition: all 0.3s ease;
    --nav-z-index: 1000;
}

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

/* Navigation principale */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: var(--nav-bg);
    box-shadow: var(--nav-shadow);
    z-index: var(--nav-z-index);
}

.nav-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo/Brand */
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--nav-text);
    font-weight: 600;
    font-size: 1.2rem;
    transition: var(--nav-transition);
}

.nav-brand:hover {
    opacity: 0.8;
}

.nav-brand-icon {
    font-size: 1.5rem;
}

.nav-brand-text {
    white-space: nowrap;
}

/* Menu de navigation */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Liens de navigation */
.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    text-decoration: none;
    color: var(--nav-text);
    border-radius: 8px;
    transition: var(--nav-transition);
    font-weight: 500;
    white-space: nowrap;
}

.nav-link:hover {
    background: var(--nav-hover);
}

.nav-link.active {
    background: var(--nav-active);
}

.nav-link-icon {
    font-size: 1.1rem;
}

/* Bouton d'authentification */
.nav-auth-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--nav-text);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--nav-transition);
    white-space: nowrap;
}

.nav-auth-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
}

.nav-auth-btn.authenticated {
    background: #10b981;
    border-color: transparent;
}

.nav-auth-btn.authenticated:hover {
    background: #059669;
}

.nav-auth-icon {
    font-size: 1.1rem;
}

/* Bouton toggle mobile */
.nav-toggle {
    display: none;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle:hover {
    background: rgba(255, 255, 255, 0.3);
}

.nav-toggle-lines {
    width: 28px;
    height: 20px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.nav-toggle-line {
    width: 100%;
    height: 3px;
    background: var(--nav-text);
    border-radius: 3px;
    transition: var(--nav-transition);
}

/* Animation du hamburger */
.nav-toggle.active .nav-toggle-line:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
}

.nav-toggle.active .nav-toggle-line:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .nav-toggle-line:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
}

/* Menu utilisateur (dropdown) */
.user-menu {
    position: fixed;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 8px;
    min-width: 200px;
    z-index: 1002;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    background: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    transition: var(--nav-transition);
    color: #333333;
    font-weight: 500;
}

.user-menu-item:hover {
    background: #f8f9fa;
}

.user-menu-item.danger {
    color: #dc3545;
}

.user-menu-item.danger:hover {
    background: #fff5f5;
}

.user-menu-icon {
    font-size: 1.2rem;
}

/* Espacer le contenu principal sous la nav */
body {
    padding-top: var(--nav-height);
}

/* Responsive - Tablette */
@media screen and (max-width: 991px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(135deg, rgba(99, 102, 241, 0.98) 0%, rgba(139, 92, 246, 0.98) 50%, rgba(217, 70, 239, 0.98) 100%);
        backdrop-filter: blur(10px);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 20px;
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        overflow-y: auto;
    }

    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        padding: 16px 20px;
        border-bottom: 1px solid var(--nav-border);
        border-radius: 0;
    }

    .nav-link:last-of-type {
        border-bottom: none;
    }

    .nav-auth-btn {
        width: 100%;
        justify-content: center;
        padding: 16px;
        margin-top: 20px;
        font-size: 1.1rem;
    }

    /* Menu utilisateur en mobile */
    .user-menu {
        position: fixed;
        top: auto;
        bottom: 20px;
        left: 20px;
        right: 20px;
        max-width: none;
    }
}

/* Responsive - Mobile */
@media screen and (max-width: 576px) {
    .nav-container {
        padding: 0 16px;
    }

    .nav-brand-text {
        font-size: 1rem;
    }

    .nav-brand-icon {
        font-size: 1.3rem;
    }

    .nav-link {
        font-size: 1.05rem;
    }

    .nav-link-icon,
    .nav-auth-icon {
        font-size: 1.3rem;
    }
}

/* Amélioration de l'accessibilité */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible pour l'accessibilité */
.nav-link:focus-visible,
.nav-auth-btn:focus-visible,
.nav-toggle:focus-visible,
.user-menu-item:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.8);
    outline-offset: 2px;
}

/* Cacher le bouton auth en mobile quand authentifié */
@media screen and (max-width: 991px) {
    .nav-auth-btn-desktop {
        display: none !important;
    }
    
    /* Style spécial pour les boutons connexion/déconnexion en mobile */
    .nav-login-btn-mobile,
    .nav-logout-btn {
        background: none;
        border: none;
        color: var(--nav-text);
        font-family: inherit;
        cursor: pointer;
        width: 100%;
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 1px solid var(--nav-border);
    }

    .nav-login-btn-mobile:hover,
    .nav-logout-btn:hover {
        background: var(--nav-hover);
    }
}