/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Chat bubbles */
.chat-bubble {
    max-width: 70%;
    padding: 0.75rem 1rem;
    border-radius: 1rem;
    margin-bottom: 0.5rem;
    position: relative;
}

.chat-bubble.sent {
    background-color: #dcf8c6;
    align-self: flex-end;
    border-bottom-right-radius: 0.25rem;
}

.chat-bubble.received {
    background-color: #ffffff;
    align-self: flex-start;
    border-bottom-left-radius: 0.25rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* Animation for new messages */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

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