:root {
    --couleur-primaire: #007bff;
    --couleur-primaire-foncé: #0056b3;
    --couleur-primaire-hover: #026cde;
    --texte-fonce: #333;
    --couleur-borders: #ddd;
    --fond-erreurs: #f8d7da;
    --erreurs-borders: #f5c6cb;
    --textes-erreurs: #dc3545;
    --attention-fond: #fff3cd;
    --attention-borders: #ffeeba;
    --attention-textes: #856404;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    padding-top: 60px;
}

a {
    text-decoration: none;
    color: var(--texte-fonce);
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    background-color: var(--couleur-primaire);
    opacity: 0.8;
    padding: 1rem;
    width: 100%;
    z-index: 1000;
}

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

.navbar-logo {
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: bold;
}

.navbar-menu {
    display: flex;
    gap: 20px;
}

.navbar-item, #menu a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    transition: all ease-in-out 0.2s;
}

.navbar-item:hover, #menu a:hover {
    color: white;
    background-color: var(--couleur-primaire-hover);
    border-radius: 4px;
    transform: scale(1.1);
}

/* Container */
.container, #content {
    max-width: 800px;
    margin: 60px auto 0;
    padding: 2rem;
    text-align: center;
}

.login-formulaire {
    margin-top: 20px;
    margin-bottom: 20px;
}

/* Items */
.collection-item, .utilisateur-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    margin: 10px 0;
    background-color: #f5f5f5;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Buttons */
.btn, button {
    padding: 10px 20px;
    background-color: var(--couleur-primaire);
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn:hover, button:hover {
    background-color: var(--couleur-primaire-foncé);
}

#annuler {
    background-color: white;
    color: var(--couleur-primaire);
    border: 1px solid var(--couleur-primaire);
}

/* Forms */
form {
    max-width: 400px;
    margin: 0 auto;
    padding: 4rem;
    background-color: rgb(244, 244, 244);
    border-radius: 1rem;
}

form div {
    margin-bottom: 20px;
}

form label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--texte-fonce);
}

form input, form select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--couleur-borders);
    border-radius: 4px;
    font-size: 16px;
}

form input:focus, form select:focus {
    outline: none;
    border-color: var(--couleur-primaire);
    box-shadow: 0 0 5px rgba(0,123,255,0.2);
}

/* Messages */
.warning {
    color: var(--attention-textes);
    background-color: var(--attention-fond);
    border: 1px solid var(--attention-borders);
    padding: 10px;
    margin: 10px 0;
    border-radius: 4px;
}

#erreur, .error {
    color: var(--textes-erreurs);
    background-color: var(--fond-erreurs);
    border: 1px solid var(--erreurs-borders);
    padding: 10px;
    margin: 10px 0;
    border-radius: 4px;
}

/* Media Queries */
@media (max-width: 768px) {
    .navbar-menu {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .navbar-item {
        padding: 10px 20px;
    }
}