*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.form {
    max-width: 400px;
    width: 100%;
    border-radius: 5px;
    border: 1px solid #767676;
    padding: 30px;
}

legend{
    font-weight: bold;
}

label,
legend {
    display: inline-block;
    margin-bottom: 20px;
}

textarea {
    resize: vertical;
    min-height: 20px;
    max-height: 100px;
}

button, input[type="checkbox"] {
    cursor: pointer;
}


.block-element {
    display: block;
    margin-top: 5px;
    width: 100%;
    padding: 2px 6px;
    border: 0.8px grey solid;
    border-radius: 6px;
}

.button-send {
    display: block;
    padding: 6px 18px;
    border: none;
    border-radius: 6px;
    background-color: #8a50ff;
    color: #fff;
    transition: opacity 0.3s;
}

button:hover {
    opacity: 0.7;
}

button:not(:disabled) :active {
    background-color: #320d78;
}

button:focus-visible, 
.block-element:focus-visible,
.checkbox:focus-visible::after,
textarea:focus-visible {
    outline: 2px solid #8a50ff;
    outline-offset: 1px;
}

button:disabled,
input:disabled,
textarea:disabled {
    opacity: 0.3;
    cursor: default;
}

.checkbox {
    appearance: none;
    position: absolute;
    outline: none;
    border: none;
}

.checkbox-label {
    padding-left: 22px;
}

.checkbox::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    border: 1px solid #333;
    border-radius: 6px;
    cursor: pointer;
    margin-left: -22px;
}

.checkbox:checked::after {
    background: url(../images/check-icon.svg) no-repeat center, #8a50ff;
}