index.css

@import url("./src/main.css");

:root {
    --color-primary-light: hsl(224, 90%, 77%);
    --color-primary: hsl(224, 90%, 64%);
    --color-primary-dark: #112e80;
    --color-focus: #e56700;
    --color-focus-light: #ffc188;
    --color-error: hsl(0, 55%, 66%);
    --color-success: #1fbf41;

    --light: #FAF9F6;
    --gray: #82817d;
    --dark: #010613;

    --shortcut-list-width: 288px;
    --shortcut-list-handle-width: 20px;
    --shortcut-width: 320px;

    --padding: 12px;
    --padding-less: 6px;
    --padding-more: 24px;
    --label-min-width: 360px;
    --input-min-width: 128px;
    --input-height: 42px;
}

@media screen and (prefers-color-scheme: light) {
    :root {
        --color-light: #FAF9F6;
        --color-gray: hsl(48, 2%, 40%);
        --color-gray-light: color-mix(in hsl, var(--color-gray) 20%, #ffffff00 80%);
        --color-dark: #010613;

        --shadow: 0px 2px 6px -1px var(--color-gray);
        --shadow-inset: inset 0 0 6px -1px var(--color-gray);
    }
}

@media screen and (prefers-color-scheme: dark) {
    :root {
        --color-light: #010613;
        --color-gray: hsl(48, 2%, 60%);
        --color-gray-light: color-mix(in hsl, var(--color-gray) 20%, #00000000 80%);
        --color-dark: #FAF9F6;

        --shadow: 0px 2px 3px 0px #3a3a3a;
        --shadow-inset: inset 0 0 6px 0 #3a3a3a;
    }
}

html {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--color-light);
    color: var(--color-dark);
    font-weight: 500;
    letter-spacing: normal;
    height: 100vh;
    margin: 0;
    box-sizing: border-box;
    overflow-x: hidden;
}

body {
    height: 100vh;
    display: grid;
    grid-template-rows: .5fr 9fr .5fr;
    margin: 0;
}

header {
    border-width: 0 0 2px 0;
    border-style: solid;
    border-color: var(--color-gray);
    text-align: center;
    padding: var(--padding-less);

    &>small {
        color: var(--color-gray);
    }
}

h1,
h2,
h3 {
    margin: 0;
    padding: 0;
}

h2 {
    font-size: large;
    font-weight: 600;
}

a {
    color: var(--color-primary);
    text-decoration: underline;
}

main {
    display: flex;
    flex-direction: row;
    justify-content: stretch;
    align-items: stretch;
    flex-wrap: nowrap;
}

article {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
    transition: width 100ms linear;
    flex: 1;
}

/*  Keyboard Shortcuts */

aside {
    height: 100%;
    width: var(--shortcut-list-handle-width);
    transition: width 100ms linear;
    border-right: 1px solid var(--color-gray-light);
    display: flex;
    flex-direction: row-reverse;
    justify-content: flex-start;
    flex-wrap: nowrap;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.toggle-shortcuts-label {
    width: var(--shortcut-list-handle-width);
    max-width: var(--shortcut-list-handle-width);
    height: 100%;
    position: relative;
    border-radius: 0;
    box-shadow: unset;
    border: none;
    outline: none;
    overflow: hidden;
    cursor: pointer;

    &:hover {
        outline: none;
        border: none;
        background: var(--color-gray-light);
    }

    &>#toggle-shortcuts {
        appearance: none;
        max-width: var(--shortcut-list-handle-width);

    }
}

.toggle-shortcuts-label:has(#toggle-shortcuts:not(:checked))::before {
    content: "►";
    text-align: center;
    font-size: var(--shortcut-list-handle-width);
    position: absolute;
    color: var(--color-gray);
    height: var(--shortcut-list-handle-width);
    width: var(--shortcut-list-handle-width);
    top: 0;
    bottom: 0;
    right: 0;
    margin: auto 0;
}

.toggle-shortcuts-label:has(#toggle-shortcuts:checked)::before {
    content: "◄";
    text-align: center;
    font-size: var(--shortcut-list-handle-width);
    position: absolute;
    height: var(--shortcut-list-handle-width);
    width: var(--shortcut-list-handle-width);
    top: 0;
    bottom: 0;
    right: 0;
    margin: auto 0;
    color: var(--color-gray);
}

#shortcuts {
    padding-left: var(--padding);
    flex-wrap: nowrap;
    width: var(--shortcut-list-width);
    min-width: var(--shortcut-list-width);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
    overflow-x: hidden;
    overflow: hidden;
    display: none;

    &>h3 {
        margin-bottom: var(--padding-less);
        margin-top: var(--padding);
        text-decoration: underline;
    }

    &>ul {
        margin: 0;
        padding: 0;

        &>li {
            display: flex;
            gap: var(--padding);
            margin: var(--padding-less) 0;
        }
    }
}

table,
tbody,
tr {
    padding: 0;
    margin: 0;
}

td {
    padding-bottom: var(--padding);
    width: var(--shortcut-list-width);
    user-select: none;
}

tr>td>p {
    margin: 0;
    text-align: left;
    padding: 0;
}

tr>td>kbd {
    margin: 0 auto;
}

tr>td>span {
    display: flex;
    justify-content: center;
    align-items: center;
    white-space: nowrap;
}

kbd {
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 4px;
    background: linear-gradient(-45deg, white, hsl(200, 22%, 86%));
    box-shadow: inset 0 -2px 0 0 hsl(200, 32%, 86%), inset 0 0 1px 1px white, 0 1px 2px 1px var(--color-gray);
    color: var(--dark);
    height: 18px;
    padding: 1px;
    width: 22px;
    margin-left: var(--padding-less);
    font-family: monospace;
    font-size: 16px;
    cursor: none;
}

aside:has(.toggle-shortcuts-label):has(#toggle-shortcuts:checked) {
    width: var(--shortcut-width);

    &>#shortcuts {
        display: flex;
    }
}

@media (prefers-reduced-motion),
(max-aspect-ratio: 1/1) and (width < 750px) {
    h1 {
        font-size: larger;
    }

    aside {
        display: none;
    }
}

/*  Notification Styles */

output#notification {
    width: fit-content;
    position: absolute;
    border-width: 2px;
    border-style: solid;
    border-color: var(--color-light);
    border-radius: calc(var(--input-height) /2);
    top: var(--padding);
    z-index: 10;
    padding: var(--padding);
    height: fit-content;
    display: none;
    box-shadow: var(--shadow);
    cursor: pointer;
    background-color: var(--color-light);
    text-align: center;
    margin: var(--padding);
    white-space: break-spaces;
}

output.error#notification {
    border-color: var(--color-error);
    display: block;
}

output.success#notification {
    border-color: var(--color-success);
    display: block;
}

output.progress#notification {
    border-color: var(--color-primary);
    display: block;
}

body>output.noscripterror.error#notification {
    cursor: not-allowed;
    left: 0;
    right: 0;
    margin: 0 auto;
    top: 90px;
}

/* Footer */

footer {
    text-align: center;
    align-content: end;
    border-width: 2px 0 0;
    border-style: solid;
    border-color: var(--color-gray);
    padding: var(--padding-less);
}

span#save-html-notice,
tr#save-html-shortcut {
    display: contents;
}

a#save-html {
    cursor: pointer;
}