body { font-family: 'Inter', sans-serif; }
.gradient-text {
    background: linear-gradient(145deg, #004e92, #00c6ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
/* Animations au scroll */
.animate-on-scroll {
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.animate-fade-up { transform: translateY(40px); }
.animate-fade-left { transform: translateX(-40px); }
.animate-fade-right { transform: translateX(40px); }
.animate-on-scroll.visible { opacity: 1; transform: translate(0,0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* Mobile menu */
.mobile-menu { max-height: 0; overflow: hidden; transition: max-height 0.4s ease-out; }
.mobile-menu.open { max-height: 400px; }

/* Modales */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000; opacity: 0; visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s;
}
.modal-overlay.active { opacity: 1; visibility: visible; }
.modal-card {
    background: white; border-radius: 2rem; padding: 2rem;
    max-width: 400px; width: 90%; max-height: 90vh; overflow-y: auto;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
    transform: scale(0.95); transition: transform 0.3s ease;
}
.modal-overlay.active .modal-card { transform: scale(1); }
.modal-step { display: none; }
.modal-step.active-step { display: block; }

/* Styles pour les boutons dans le menu mobile */
.mobile-auth-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e5e7eb;
}

.mobile-auth-buttons a {
    display: block;
    text-align: center;
}