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.3s,color .3s}.mobile-submenu a:hover{background:#23357b;color:#fff}.backdrop{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#0006;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);opacity:0;visibility:hidden;transition:opacity .3s ease;z-index:4999}.backdrop.show{opacity:1;visibility:visible}@media (max-width: 768px){.navbar-center,.navbar-right{display:none}.navbar{padding-right:10px}.hamburger{display:flex}.submenu,.submenu-right{position:relative;box-shadow:none;border-radius:0;left:0;top:0}.submenu li a,.submenu-right li a{padding-left:2rem}}.reveal{opacity:0;transform:translateY(60px);transition:opacity .6s ease,transform .6s ease}.reveal.activeanim{opacity:1;transform:translateY(0)}footer{background:#1f2937;color:#fff;padding:2rem;text-align:center}footer p{font-size:.9rem}.error-container{min-height:80vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:2rem}.error-code{font-size:120px;font-weight:700;color:#2c3e50;margin:0;line-height:1}.error-message{font-size:24px;color:#34495e;margin:20px 0}.error-description{font-size:18px;color:#7f8c8d;max-width:600px;margin:0 auto 30px}.back-home{display:inline-block;padding:15px 30px;background-color:#3498db;color:#fff;text-decoration:none;border-radius:5px;transition:background-color .3s ease}.back-home:hover{background-color:#2980b9}.error-illustration{max-width:300px;margin-bottom:30px}.connexion-page{display:flex;align-items:center;justify-content:center;margin:0;padding:2rem;height:80vh}.login-container{background:#f9f9f9;padding:2.5rem;border-radius:12px;box-shadow:0 8px 20px #00000026;width:100%;max-width:400px;text-align:center;color:#1f2937}.login-container h2{margin-bottom:1.5rem;font-size:2rem;color:#23357b}.login-form{display:flex;flex-direction:column;gap:1rem}.login-form input{padding:.8rem 1rem;border:1px solid #d1d5db;border-radius:8px;font-size:1rem;outline:none;transition:border .3s}.login-form input:focus{border-color:#0c6fd1}.btn-login{background-color:#23357b;color:#fff;padding:.8rem 1rem;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;border:none;transition:background .3s}.btn-login:hover{background-color:#0c6fd1}.small-text{margin-top:1rem;font-size:.9rem;color:#6b7280}.small-text a{color:#0c6fd1;text-decoration:none}.small-text a:hover{text-decoration:underline}@media (max-width: 480px){.login-container{padding:2rem 1.5rem}.login-container h2{font-size:1.6rem}}.tabs{display:flex;gap:10px;margin-bottom:25px;justify-content:center}.tabs button{padding:8px 22px;border:none;background:#eee;font-weight:600;cursor:pointer;border-radius:6px 6px 0 0;color:#222;outline:none;transition:background .18s}.tabs button.active{background:#23357b;color:#fff}