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

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.message-received {
    animation: fadeIn 0.3s ease-in-out;
}

.div_image {
    animation: slideUp 0.4s ease-in-out;
}

.loading-indicator {
    display: inline-block;
    animation: pulse 1.5s infinite;
}

.error-message {
    color: #ff6b6b;
    font-weight: 500;
    padding: 10px;
    background-color: rgba(255, 107, 107, 0.1);
    border-radius: 4px;
    margin: 5px 0;
}

.success-message {
    color: #51cf66;
    font-weight: 500;
}

.conversation {
    scroll-behavior: smooth;
}

button:hover {
    transform: scale(1.02);
    transition: transform 0.2s ease;
}

* {
    transition: color 0.2s ease, background-color 0.2s ease;
}