#ai-ball {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background-color: #f0ad4e;
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    cursor: pointer;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

#ai-ball:hover { background-color: #e67e22; }

#chat-window {
    position: fixed;
    bottom: 90px;
    right: 20px;
    width: 350px;
    height: 400px;
    background-color: #fff;
    border: 1px solid #ccc;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    display: none;
}

#chat-header {
    background-color: #f0ad4e;
    padding: 10px;
    display: flex;
    justify-content: space-between;
    color: white;
}

#close-chat { background: none; border: none; color: white; font-size: 16px; cursor: pointer; }