#nexai-chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 300px;
    height: 400px;
    background: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    font-family: Arial, sans-serif;
    z-index: 999999;
}

#nexai-header {
    background: #111827;
    color: white;
    padding: 12px;
    text-align: center;
    font-weight: bold;
}

#nexai-messages {
    flex: 1;
    padding: 10px;
    overflow-y: auto;
    font-size: 14px;
}

#nexai-input {
    border: none;
    border-top: 1px solid #ddd;
    padding: 10px;
    font-size: 14px;
    outline: none;
}