body {
        font-family: Arial, sans-serif;
        padding: 20px;
        background: #f4f6f8;
        display: flex;
        justify-content: center;
    }
    .container {
        max-width: 600px;
        width: 100%;
        background: #fff;
        padding: 20px;
        border-radius: 12px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    }
    h1 {
        text-align: center;
        color: #204065;
        margin-bottom: 20px;
    }
    .section {
        margin-bottom: 15px;
    }
    label {
        display: block;
        margin-top: 8px;
        font-weight: bold;
    }
    input, select, textarea {
       
        padding: 8px;
        margin-top: 5px;
        border: 1px solid #ccc;
        border-radius: 6px;
        font-size: 16px;
    }
    textarea {
        resize: vertical;
    }
    .result {
        font-size: 20px;
        font-weight: bold;
        text-align: center;
        color: #12b48b;
        padding: 10px;
        background: #f1fdf8;
        border-radius: 6px;
        margin-top: 10px;
    }
    button {
        width: 100%;
        background: #12b48b;
        color: #fff;
        padding: 12px;
        font-size: 16px;
        border: none;
        border-radius: 6px;
        cursor: pointer;
        margin-top: 10px;
    }
    button:hover {
        background: #0f8f6f;
    }
    .hidden {
        display: none;
    }