body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 2rem;
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 1rem;
}

form {
    max-width: 600px;
    margin: 0 auto;
    background: #fff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

label {
    display: block;
    margin-bottom: 1rem;
    color: #555;
}

input[type='number'],
input[type='text'],
select {
    width: 100%;
    padding: 0.5rem;
    margin-top: 0.25rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

button[type='submit'] {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
}

button[type='submit']:hover {
    background-color: #0056b3;
}

.tabs {
    display: flex;
    margin-bottom: 1rem;
    border-bottom: 1px solid #ccc;
}

.tab {
    padding: 0.5rem 1rem;
    cursor: pointer;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    font-size: 1rem;
}

.tab.active {
    border-bottom-color: #007bff;
    font-weight: bold;
    color: #007bff;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.lang-select {
    position: absolute;
    top: 10px;
    right: 10px;
}

.lang-select select {
    padding: 0.25rem;
}