:root {
    --bgColor: white;
    --inputColor: black;
    --outlineColor: dodgerblue;
    --beamColor: blue;
    --spacer: 1rem;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    margin: 0;
    font-family: sans-serif;
}

body {
    display: grid;
    place-items: center;
    background: var(--bgColor);
}

body.show-password {
    --bgColor: black;
    --inputColor: white;
    --outlineColor: var(--beamColor);
}

form {
    transform: translate3d(0, 0, 0);
    padding: var(--spacer);
}

form>*+* {
    margin-top: var(--spacer);
}

.form-item>*+* {
    margin-top: 0.5rem;
}

label,
input,
button {
    font-size: 1.5rem;
    font-family: monospace;
    color: var(--inputColor);
}

input:focus,
button:focus {
    outline: 3px solid var(--outlineColor);
    outline-offset: 2px;
}

input::-moz-focus-inner,
button::-moz-focus-inner {
    border: none;
}

#password {
    color: black;
}

button {
    border: none;
    background: none;
}

#submit {
    cursor: pointer;
    margin: calc(var(--spacer) * 2) 0 0 2px;
    padding: 0.75rem 1.25rem;
    color: var(--bgColor);
    background-color: var(--inputColor);
    box-shadow: 4px 4px 0 rgba(30, 144, 255, 0.2);
}

#submit:active {
    transform: translateY(1px);
}

.input-wrapper {
    position: relative;
}

input {
    padding: 0.75rem 4rem 0.75rem 0.75rem;
    width: 100%;
    border: 2px solid transparent;
    border-radius: 0;
    background-color: transparent;
    box-shadow:
        inset 0 0 0 2px black,
        inset 6px 6px 0 rgba(30, 144, 255, 0.2),
        3px 3px 0 rgba(30, 144, 255, 0.2);
    appearance: none;
}

input:focus {
    outline-offset: 1px;
}

body.show-password input {
    box-shadow: inset 0 0 0 2px black;
    border: 2px dashed white;
}

body.show-password input:focus {
    outline: none;
    border-color: var(--beamColor);
}

#eyeball {
    --size: 1.25rem;

    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    outline: none;
    position: absolute;
    top: 50%;
    right: 0.75rem;
    border: none;
    background-color: transparent;
    transform: translateY(-50%);
}

#eyeball:active {
    transform: translateY(calc(-50% + 1px));
}

.eye {
    width: var(--size);
    height: var(--size);
    border: 2px solid var(--inputColor);
    border-radius: calc(var(--size) / 1.5) 0;
    transform: rotate(45deg);
    position: relative;
}

.eye::before,
.eye::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    margin: auto;
    border-radius: 100%;
}

.eye::before {
    width: 35%;
    height: 35%;
    background-color: var(--inputColor);
}

.eye::after {
    width: 65%;
    height: 65%;
    border: 2px solid var(--inputColor);
    border-radius: 100%;
}