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:root {
--cssx-children: main#container;
}
html, body {
margin: 0;
padding: 0;
background-color: #e2e8f0;
font-size: 16px;
}
body * {
box-sizing: border-box;
font-family: Courier, monospace;
}
#container {
--num1: '';
--num2: '';
--operation: '';
max-width: 400px;
margin: 2rem auto;
padding: 1rem;
background-color: #020617;
color: #e2e8f0;
--cssx-children: #display hr#sep0 #buttons;
}
#display {
padding: 0 1rem;
line-height: 1.7em;
font-size: 2rem;
height: 3rem;
background-color: #0f172a;
text-align: right;
}
#display::after {
content: var(--num1) var(--operation) var(--num2);
}
#buttons {
--cssx-children:
h(div#toprow.horizontal, map(), seq(
button#btn-clear,
button#btn-run,
))
div#buttons-numbers
div#buttons-operators.horizontal
;
}
#buttons > * {
display: flex;
flex-direction: column;
gap: 20px;
}
#buttons-operators {
--cssx-children:
instance(button#btn-op, map(--op: "+"))
instance(button#btn-op, map(--op: "-"))
instance(button#btn-op, map(--op: "*"))
instance(button#btn-op, map(--op: "/"))
instance(button#btn-op, map(--op: "!"))
;
}
#buttons-numbers {
--cssx-children:
instance(button#btn-num, map(--n: "9"))
instance(button#btn-num, map(--n: "8"))
instance(button#btn-num, map(--n: "7"))
instance(button#btn-num, map(--n: "6"))
instance(button#btn-num, map(--n: "5"))
instance(button#btn-num, map(--n: "4"))
instance(button#btn-num, map(--n: "3"))
instance(button#btn-num, map(--n: "2"))
instance(button#btn-num, map(--n: "1"))
instance(button#btn-num, map(--n: "0"))
;
}
#buttons-numbers > * {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 2px;
}
[data-instance=btn-num]::after { content: var(--n); }
[data-instance=btn-num] {
width: 100%;
--cssx-on-click:
if(get-var(--operation),
if(equals(get-var(--operation), '!'),
'',
update('container', --num2, string(get-var(--num2), get-var(--n)))),
update('container', --num1, string(get-var(--num1), get-var(--n))),
);
}
[data-instance=btn-op]::after { content: var(--op); }
[data-instance=btn-op] {
width: 100%;
--cssx-on-click: update('container', --operation, get-var(--op));
}
#btn-run::after { content: '='; }
#btn-run {
--factorial: func(--n: number)
if(lte(get-var(--n), 1), 1,
calc(
get-var(--n)
* call(--factorial, map(--n: calc(get-var(--n) - 1)))
));
--cssx-on-click:
update('container', --num1,
if(equals(get-var(--operation), '!'),
call(--factorial, map(--n: get-var(--num1))),
if(get-var(--num2),
js-eval(string(get-var(--num1), get-var(--operation), get-var(--num2))),
get-var(--num1)
)
)
)
update('container', --operation, '')
update('container', --num2, '');
}
#btn-clear::after { content: 'clear'; }
#btn-clear {
--cssx-on-click:
update('container', --num1, '')
update('container', --operation, '')
update('container', --num2, '');
}
button {
width: 100%;
padding: 0.5rem 0;
border: none;
background-color: #475569;
color: white;
font-weight: bold;
font-size: 1.3rem;
cursor: pointer;
}
button:hover { background-color: #334155; }
button:active { background-color: #64748b; }
body .horizontal > * {
width: 100%;
display: flex;
justify-content: space-between;
gap: 2px;
}
|
