:root {
    --bg-body: #f0f0f0;
    --bg-form: #ffffff;
    --bg-submit-button: #007bff;
    --bg-submit-button-hover: #0056b3;
    --font-family: Arial, sans-serif;
    --form-box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
    --error-color: red;
    --success-color: green;
}

body {
    background-color: var(--bg-body, #fff);
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
}

.container {
    width: 50%;
    margin: 100px auto;
    background-color: var(--bg-form, #fff);
    box-shadow: var(--form-box-shadow);
    padding: 20px;
    border-radius: 5px;
}

.text-center {
    text-align: center;
}

.input-block {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
}

label {
    font-size: 18px;
    margin-bottom: 10px;
}

.text-input,
.email-input {
    font-size: 16px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

.submit-button {
    background-color: var(--bg-submit-button);
    color: #fff;
    font-size: 18px;
    padding: 10px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}

.submit-button:hover {
    background-color: var(--bg-submit-button-hover);
}


.validation-error {
    color: var(--error-color);
}

.input-invalid {
    border: 1px solid var(--error-color);
}

.hidden {
    display: none;
}

#toast {
    position: fixed;
    top: 0;
    right: 0;
    background-color: var(--success-color);
    color: #fff;
    padding: 15px;
    margin: 10px;
    border-radius: 5px;
}

.close-button {
    position: absolute;
    top: 0;
    right: 0;
    padding: 5px 10px;
    cursor: pointer;
}