body {
    font-family: Arial, sans-serif;
    background: #f4f7fb;
    margin: 0;
    padding: 40px 20px;
}

.container {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    margin-bottom: 10px;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
}

label {
    display: block;
    font-weight: bold;
    margin-bottom: 8px;
}

input {
    width: 100%;
    box-sizing: border-box;
    padding: 12px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 6px;
    margin-bottom: 15px;
}

button {
    width: 100%;
    padding: 12px;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    background: #333;
    color: white;
    cursor: pointer;
}

button:hover {
    opacity: 0.9;
}

#loading {
    text-align: center;
    margin-top: 20px;
}

#result {
    margin-top: 25px;
    line-height: 1.6;
}

.hidden {
    display: none;
}