stylesheet.css

/* cores, modo claro e escuro */

:root:not(.dark) {
    --text-primary: hsl(0 0% 5%);
    --text-highlight: hsl(200 100% 30%);
    --background-primary: hsl(0 0% 97%);
    --background-secondary: hsl(0 0% 90%);
    --background-tertiary: hsl(0 0% 80%);
    --background-accent: hsl(240 100% 75%);
    --scrollbar-thumb: hsl(0 0% 75%);
    --scrollbar-thumb-hover: hsl(0 0% 65%);
    --button-outline-color: hsl(0 0% 50%);
    --button-disabled: hsl(0 70% 65%);
    --selected-outline-color: hsl(240 50% 50%);
    --nav-current: var(--background-accent);
    --nav-complete: hsl(140 75% 60%);
    --nav-incomplete: hsl(50 90% 65%);
    --nav-menu-background: hsla(0 0% 0% / 90%);

    --code-comment: hsl(0 0% 50%);
    --code-string: hsl(20 100% 40%);
    --code-keyword: hsl(300 100% 40%);
    --code-keyword2: hsl(240, 90%, 35%);
    --code-function: hsl(60 100% 30%);
    --code-number: hsl(140 100% 30%);
    --text-input: hsl(110, 100%, 30%);
    --answer-color-correct: var(--nav-complete);
    --answer-color-incorrect: hsl(0 70% 65%);
}
:root.dark {
    --text-primary: hsl(0 0% 90%);
    --text-highlight: hsl(200 100% 50%);
    --background-primary: hsl(0 0% 13%);
    --background-secondary: hsl(0 0% 18%);
    --background-tertiary: hsl(0 0% 25%);
    --background-accent: hsl(240, 50%, 35%);
    --scrollbar-thumb: hsl(0, 0%, 30%);
    --scrollbar-thumb-hover: hsl(0 0% 35%);
    --button-outline-color: hsl(0 0% 50%);
    --button-disabled: hsl(0 60% 35%);
    --selected-outline-color: hsl(240 50% 70%);
    --nav-current: var(--background-accent);
    --nav-complete: hsl(140 80% 30%);
    --nav-incomplete: hsl(60 80% 35%);
    --nav-menu-background: hsla(0 0% 0% / 90%);

    --code-comment: hsl(0 0% 60%);
    --code-string: hsl(20 70% 65%);
    --code-keyword: hsl(300 70% 60%);
    --code-keyword2: hsl(240 70% 70%);
    --code-function: hsl(60 80% 70%);
    --code-number: hsl(160 100% 60%);
    --text-input: hsl(60, 100%, 50%);
    --answer-color-correct: var(--nav-complete);
    --answer-color-incorrect: hsl(0 60% 35%);
}

:root {
    --font-main: Verdana, Arial, sans-serif;
    --font-header: cursive, sans-serif;
    --font-code: monospace;
}

@media (prefers-reduced-motion: no-preference) {
    :root {
        scroll-behavior: smooth;
    }
}

/* layout principal */

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

:root,
body {
    width: 100%;
    min-height: 100%;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--background-primary);
    color: var(--text-primary);
    font-family: var(--font-main);
}

.main-wrapper {
    position: relative;
    max-width: 88rem;
    padding: 2rem 4rem 2rem 2rem;
    margin-inline: auto;
    display: grid;
    grid-template-areas: "sidebar main";
    grid-template-columns: 1fr 4fr;
    column-gap: 4rem;
}
@media (max-width: 60rem) {
    /* 60rem = 960px */
    .main-wrapper {
        padding-inline: min(7vw, 4rem);
        grid-template-areas:
            "main"
            "sidebar";
        grid-template-columns: 1fr;
        row-gap: 4rem;
    }
}

.main-content {
    grid-area: main;
    width: 100%;
    min-height: 100%;
    margin-inline: auto;

    background-color: var(--background-primary);
}

.article {
    margin: 2rem 0 2.5rem 0;
}

.separator {
    height: 0.25rem;
    margin-block: 1rem;

    background-color: var(--background-tertiary);
}

.button-grid {
    display: grid;
    grid-auto-flow: column;
    justify-content: space-between;
}

/* botões de navegação */

button:not(:disabled):hover,
button:not(:disabled):focus {
    outline: var(--selected-outline-color) solid 4px;
}

button {
    margin: 0;
    padding: 0.5rem;

    background-color: var(--background-accent);
    border-radius: 0.5rem;
    border: none;
    outline: 1px solid var(--button-outline-color);
    cursor: pointer;
    color: inherit;
    font-size: inherit;
}
button:disabled {
    cursor: not-allowed;
}
.next-button,
.previous-button {
    min-width: 4rem;

    font-family: var(--font-main);
    font-size: 1.125rem;
}
.next-button:disabled,
.previous-button:disabled {
    background-color: var(--button-disabled);
}

/* barra lateral */

.sidebar {
    grid-area: sidebar;
    position: sticky;
    top: 2rem;
    height: fit-content;
    padding-bottom: 1rem;
    /* max-width: 20rem; */
}

.menu {
    margin: 0;
    padding: 0;
    list-style: none;
}
.menu button {
    width: 2.6rem;
    height: 2.6rem;
    padding: 0.3rem;
    background-color: var(--background-tertiary);
}

.menu svg {
    fill: var(--text-primary);
}

.nav-header {
    display: block;
    margin-top: 3rem;
    margin-bottom: 1rem;

    font-family: var(--font-header);
    font-size: 1.5rem;
}
.nav-list {
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    row-gap: 0.5rem;
    list-style-type: none;
}

.nav-button {
    width: 100%;
    padding: 0.25rem 0.5rem;

    background-color: var(--background-secondary);
    border-radius: 0.25rem;
    outline: none;
    text-align: left;
}
.nav-button.complete {
    background-color: var(--nav-complete);
}
.nav-button.incomplete {
    background-color: var(--nav-incomplete);
}
.nav-button.current {
    background-color: var(--nav-current);
    font-style: italic;
}

@media (max-width: 60rem) {
    .sidebar {
        display: grid;
    }
    .sidebar-buttons-wrapper {
        grid-row: 2;
    }
}

.nav-menu {
    position: fixed;
    bottom: 0;
    left: 2rem;
    right: 2rem;
    max-height: 100%;
    /* overflow-y: scroll; */
    margin: 0;
    padding: 0 2rem 2rem 2rem;
    z-index: 1;

    display: grid;
    grid-template-columns: repeat(3, 1fr);
    column-gap: 2rem;

    background-color: var(--nav-menu-background);
    border-radius: 1rem 1rem 0 0;
    list-style: none;
}
@media (max-width: 60rem) {
    .nav-menu {
        left: 0;
        right: 0;
        border-radius: 0;
    }
}
.nav-menu.hidden {
    display: none;
    opacity: 0;
}
.nav-menu .nav-header {
    margin-top: 2.5rem;
}

/* barra de rolagem */

::-webkit-scrollbar {
    background-color: var(--background-secondary);
}
::-webkit-scrollbar-thumb {
    background-color: var(--scrollbar-thumb);
    border: 2px solid var(--background-secondary);
}
::-webkit-scrollbar-thumb:hover {
    background-color: var(--scrollbar-thumb-hover);
}
::-webkit-scrollbar-button:vertical:hover {
    background-color: var(--background-tertiary);
}
::-webkit-scrollbar-button:vertical:decrement {
    background-image: url(svgs/triangle-up.svg);
}
::-webkit-scrollbar-button:vertical:increment {
    background-image: url(svgs/triangle-down.svg);
}
::-webkit-scrollbar-corner {
    background-color: var(--background-tertiary);
}

/* conteúdo principal */

h1,
h2,
h3,
p,
pre {
    margin-top: 1em;
    margin-bottom: 1rem;
    line-height: 1.5;
}

h1,
h2,
h3 {
    font-family: var(--font-header);
    font-weight: bold;
}
h1 {
    margin-bottom: -1rem;
    font-size: 2.5rem;
}
h2 {
    font-size: 2rem;
    font-style: italic;
}
h3 {
    font-size: 1.4rem;
}
p {
    font-size: 1rem;
}
b {
    color: var(--text-highlight);
}

.code-wrapper {
    padding: 0.5rem 1rem;
    background-color: var(--background-secondary);
    border-radius: 0.3rem;
    font-size: 0.9rem;
    font-family: var(--font-code);
    tab-size: 4;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: hidden;
}
code {
    font-family: var(--font-code);
}
.inline-code {
    padding-inline: 0.25rem;
    background-color: var(--background-secondary);
    border-radius: 0.15rem;
}
.code-comment {
    color: var(--code-comment);
}
.code-string {
    color: var(--code-string);
}
.code-keyword {
    color: var(--code-keyword);
}
.code-keyword-value {
    color: var(--code-keyword2);
}
.code-function {
    color: var(--code-function);
}
.code-number {
    color: var(--code-number);
}

.in-out {
    margin-block: 1rem;
    display: grid;
    grid-template-columns: 2.25fr 1fr;
    column-gap: 1.5rem;
}
.code-wrapper > pre {
    margin: 0;
    white-space: inherit;
}
.in-out input {
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.25rem;

    background-color: var(--background-tertiary);
    border-radius: 0.3rem;
    border-color: var(--background-primary);
    color: var(--text-input);
    font-weight: bold;
    font-style: italic;
    font-family: var(--font-code);
}
.insert-input {
    font-weight: bold;
    font-style: italic;
    color: var(--text-input);
}
output {
    font-style: italic;
    line-height: 1.5;
}

.answer-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem 1rem;
}
.answer {
    /* button */
    padding-inline: 1rem;

    background-color: var(--background-secondary);
    color: var(--text-primary);
    text-align: left;

    animation-duration: 500ms;
    animation-timing-function: ease-out;
    animation-fill-mode: forwards;
}
@keyframes bgColorShift {
    from {
        background-color: var(--background-secondary);
    }
}
.answer.correct {
    animation-name: bgColorShift;
    background-color: var(--answer-color-correct);
}
.answer.incorrect {
    animation-name: bgColorShift;
    background-color: var(--answer-color-incorrect);
}