/* Améliorations CSS pour loading et animations */

/* Loading spinner */
.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 3px solid rgba(88, 101, 242, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Skeleton loading pour les cartes */
.skeleton {
    background: linear-gradient(90deg, #2C2F33 25%, #36393f 50%, #2C2F33 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-card {
    height: 120px;
    border-radius: 8px;
    margin: 1rem 0;
}

/* Smooth transitions */
.bump-card, .feature-card, .cta-button, .lang-button {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Hover effects améliorés */
.bump-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(88, 101, 242, 0.15);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

/* Animation d'apparition */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Toast notifications */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--primary);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: translateX(400px);
    transition: transform 0.3s ease-out;
    z-index: 1000;
}

.toast.show {
    transform: translateX(0);
}

/* Responsive improvements */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
}

/* Dark mode enhancements */
@media (prefers-color-scheme: dark) {
    :root {
        --dark: #1a1a1a;
        --secondary: #2d2d2d;
    }
}

/* Accessibility improvements */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles */
.cta-button:focus,
.lang-button:focus,
.join-button:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Scroll behavior */
html {
    scroll-behavior: smooth;
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--primary);
    color: white;
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: #4752c4;
    transform: translateY(-2px);
}