#oacb-chat-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

#oacb-chat-button {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
    color: white;
}

#oacb-chat-button:hover {
    transform: scale(1.1);
}

#oacb-chat-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    height: 500px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid #e0e0e0;
}

#oacb-chat-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
}

#oacb-chat-close {
    cursor: pointer;
    font-size: 20px;
    font-weight: bold;
}

#oacb-chat-messages {
    flex: 1;
    padding: 15px;
    overflow-y: auto;
    background: #f8f9fa;
}

.oacb-user-message,
.oacb-bot-message {
    margin-bottom: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    max-width: 80%;
    word-wrap: break-word;
    line-height: 1.4;
}

.oacb-user-message {
    background: #667eea;
    color: white;
    margin-left: auto;
    text-align: right;
    border-bottom-right-radius: 4px;
}

.oacb-bot-message {
    background: white;
    color: #333;
    margin-right: auto;
    border-bottom-left-radius: 4px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

#oacb-chat-input-area {
    padding: 15px;
    background: white;
    border-top: 1px solid #e0e0e0;
    display: flex;
    gap: 10px;
}

#oacb-chat-input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 25px;
    outline: none;
    font-size: 14px;
}

#oacb-chat-input:focus {
    border-color: #667eea;
}

#oacb-send-button {
    padding: 8px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: bold;
    transition: opacity 0.3s ease;
}

#oacb-send-button:hover {
    opacity: 0.9;
}

/* Scrollbar Styling */
#oacb-chat-messages::-webkit-scrollbar {
    width: 6px;
}

#oacb-chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

#oacb-chat-messages::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 3px;
}

/* Mobile Responsive */
@media (max-width: 480px) {
    #oacb-chat-window {
        width: 300px;
        height: 450px;
        bottom: 70px;
    }
    
    #oacb-chat-button {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }
}