body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #f3f6fb;
}

.main-container {
    width: 400px;
    margin: 50px auto;
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 12px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

.btn-green {
    background-color: #28a745;
    color: white;
    border: none;
    padding: 10px;
    width: 100%;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
}

.result {
    margin-top: 20px;
    padding: 10px;
    background-color: #eafaf1;
    border-left: 5px solid #28a745;
}

.chatbot {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 330px;
    background: white;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.1);
}

.chat-history {
    max-height: 250px;
    overflow-y: auto;
    margin-top: 10px;
}

.chat-bubble {
    margin-bottom: 10px;
    padding: 8px;
    border-radius: 6px;
    font-size: 14px;
}

.chat-bubble.user {
    background-color: #f0f0f0;
}

.chat-bubble.ai {
    background-color: #e6f7ff;
}

.btn-blue {
    background-color: #4285f4;
    color: white;
    border: none;
    padding: 8px;
    width: 100%;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 5px;
}