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

  /* https://kilianvalkhof.com/2022/css-html/your-css-reset-needs-text-size-adjust-probably/ */
  html {
    -moz-text-size-adjust: none;
    -webkit-text-size-adjust: none;
    text-size-adjust: none;
  }

  body,
  h1,
  h2,
  h3,
  h4,
  p,
  figure,
  blockquote,
  dl,
  dd {
    margin: 0;
  }

  /* https://www.scottohara.me/blog/2019/01/12/lists-and-safari.html */
  [role="list"] {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  body {
    min-block-size: 100vh;
    line-height: 1.6;
  }

  h1,
  h2,
  h3,
  button,
  input,
  label {
    line-height: 1.1;
  }

  h1,
  h2,
  h3,
  h4 {
    text-wrap: balance;
  }

  p,
  li {
    text-wrap: pretty;
  }

  img,
  picture {
    max-inline-size: 100%;
    display: block;
    object-fit: cover;
  }

  input,
  button,
  textarea,
  select {
    font: inherit;
  }
}

@layer base {
  :root {
    --clr-white: hsl(0, 0%, 100%);
    --clr-gray-100: hsl(0, 2%, 79%);
    --clr-brand-400: hsl(25, 88%, 69%);
    --clr-brand-500: hsl(148deg 76% 40.24%);
    --clr-green-400: hsl(143, 19%, 49%);
    --clr-green-500: hsl(143, 38%, 37%);
    --clr-green-600: hsl(145, 29%, 19%);
    --clr-brown-500: hsl(10, 5%, 25%);
    --clr-brown-600: hsl(9, 7%, 21%);
    --clr-brown-700: hsl(9, 8%, 16%);
    --clr-brown-800: hsl(0, 6%, 15%);
    --clr-brown-900: hsl(0, 6%, 13%);

    --clr-orange-500: hsl(28, 43%, 28%);
    --clr-red-500: hsl(359, 34%, 24%);
    --clr-teal-500: hsl(186, 42%, 25%);

    --clr-frontend-masters-500: hsl(8, 57%, 14%);
    --clr-freecodecamp-500: hsl(240, 56%, 9%);

    --clr-html-500: hsl(13, 75%, 21%);
    --clr-javascript-500: hsl(47, 88%, 18%);
    --clr-css-500: hsl(221, 87%, 20%);
    --clr-react-500: hsl(193, 89%, 19%);
    --clr-tailwind-500: hsl(180, 93%, 18%);
    --clr-typescript-500: hsl(211, 66%, 19%);
    --clr-node-500: hsl(108, 46%, 16%);
    --clr-next-500: hsl(0, 0%, 5%);
    --clr-accessibility-500: hsl(138, 44%, 15%);
    --clr-git-500: hsl(14, 68%, 17%);
    --clr-github-500: hsl(0, 0%, 19%);
    --clr-vite-500: hsl(268, 89%, 19%);
    --clr-vitest-500: hsl(85, 51%, 18%);
    --clr-sqlite-500: hsl(195, 53%, 16%);
    --clr-netlify-500: hsl(168, 67%, 15%);
    --clr-render-500: hsl(198, 85%, 17%);
    --clr-tanstack-500: hsl(17, 100%, 19%);
    --clr-next-intl-500: hsl(212, 20%, 12%);
    --clr-ui-ux-500: hsl(288, 58%, 18%);
    --clr-figma-500: hsl(339, 78%, 18%);
    --clr-vscode-500: hsl(201, 89%, 18%);
    --clr-performance-500: hsl(61, 83%, 18%);
    --clr-express-500: hsl(120, 6%, 13%);
    --clr-linux-500: hsl(35, 95%, 18%);
    --clr-docker-500: hsl(205, 83%, 18%);
    --clr-nginx-500: hsl(146, 72%, 15%);

    --ff-heading: "Outfit", sans-serif;
    --ff-body: "Fira Sans", sans-serif;

    --fs-300: 0.875rem;
    --fs-400: 1rem;
    --fs-500: 1.125rem;
    --fs-600: 1.25rem;
    --fs-700: 1.5rem;
    --fs-800: 2rem;
    --fs-900: 3rem;
    --fs-1000: 3rem;

    @media (width > 760px) {
      --fs-300: 0.875rem;
      --fs-400: 1rem;
      --fs-500: 1.25rem;
      --fs-600: 1.5rem;
      --fs-700: 2rem;
      --fs-800: 3rem;
      --fs-900: 4rem;
      --fs-1000: 6rem;
    }
  }
  /* in another selector for syntax highlighting reasons only */
  :root {
    --text-main: var(--clr-gray-100);
    --text-high-contrast: var(--clr-white);
    --text-brand: var(--clr-brand-500);
    --text-brand-light: var(--clr-brand-400);

    --background-accent-light: var(--clr-green-400);
    --background-accent-main: var(--clr-green-500);
    --background-accent-dark: var(--clr-green-600);

    --background-extra-light: var(--clr-brown-500);
    --background-light: var(--clr-brown-600);
    --background-main: var(--clr-brown-700);
    --background-dark: var(--clr-brown-800);
    --background-extra-dark: var(--clr-brown-900);

    --font-size-heading-sm: var(--fs-700);
    --font-size-heading-regular: var(--fs-800);
    --font-size-heading-lg: var(--fs-900);
    --font-size-heading-xl: var(--fs-1000);

    --font-size-sm: var(--fs-300);
    --font-size-regular: var(--fs-400);
    --font-size-md: var(--fs-500);
    --font-size-lg: var(--fs-600);

    --border-radius-1: 0.25rem;
    --border-radius-2: 0.5rem;
    --border-radius-3: 0.75rem;
  }
}

@layer base {
  @view-transition {
    navigation: auto;
  }

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

  html {
    scroll-padding: 2rem;
  }

  body {
    font-family: var(--ff-body);
    font-size: var(--font-size-regular);
    color: var(--text-main);
    background-color: var(--background-main);
  }

  h1,
  h2,
  h3,
  h4 {
    font-family: var(--ff-heading);
    font-weight: 700;
    color: var(--text-high-contrast);
  }

  a {
    color: var(--text-high-contrast);
  }

  a:hover,
  a:focus-visible {
    color: var(--text-brand-light);
  }

  img {
    border-radius: var(--border-radius-3);
  }
}

@layer layout {
  .flow > * + * {
    margin-block-start: var(--flow-space, 1em);
  }
  .grid-flow {
    display: grid;
    gap: var(--grid-flow-space, 1rem);

    align-content: start;
    justify-items: start;
  }
  .flex-flow {
    display: flex;
    gap: var(--flex-flow-gap, 0.5rem);
    flex-wrap: wrap;
  }

  .wrapper {
    --wrapper-max-width: 1130px;
    --wrapper-padding: 1rem;

    max-width: var(--wrapper-max-width);
    margin-inline: auto;
    padding-inline: var(--wrapper-padding);

    box-sizing: content-box;
  }

  .wrapper[data-width="narrow"] {
    --wrapper-max-width: 720px;
  }

  .wrapper[data-width="wide"] {
    --wrapper-max-width: 1330px;
  }

  .section {
    padding-block: 3.75rem;

    @media (min-width: 760px) {
      padding-block: 8rem;

      &[data-padding="compact"] {
        padding-block: 4.5rem;
      }
    }

    .grid-auto-fill {
      --grid-auto-fill-min-column-size: 367px;

      display: grid;
      gap: 1rem;
      grid-template-columns: repeat(
        auto-fill,
        minmax(min(var(--grid-auto-fill-min-column-size, 367px), 100%), 1fr)
      );
    }

    .grid-auto-fill[data-card="large"] {
      --grid-auto-fill-min-column-size: 367px;
    }

    .grid-auto-fill[data-card="medium"] {
      --grid-auto-fill-min-column-size: 271px;
    }
  }
}

@layer components {
  .skip-to-main {
    background: var(--clr-green-500);
    font-size: var(--fs-600);
    padding: 1rem;
    position: absolute;
    top: 1rem;
    left: 1rem;
    border-radius: var(--border-radius-3);
    color: white;
    z-index: 100;
  }

  .skip-to-main:not(:focus) {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
  }

  .site-header {
    padding-block: 1rem;
    background-color: var(--background-extra-dark);
  }

  .site-header__inner {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 2rem;
    justify-content: space-between;
  }

  .primary-navigation {
    ul {
      list-style: none;
      margin: 0;
      padding: 0;
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem 2rem;
    }

    a {
      text-decoration: none;
    }
  }

  [aria-controls="primary-navigation"] {
    display: none;
  }

  @media (width < 760px) {
    [aria-controls="primary-navigation"] {
      display: block;
      z-index: 100;
      background: transparent;
      border: 0;

      img {
        border-radius: 0;
      }
    }

    .site-header {
      position: relative;
    }

    .primary-navigation {
      display: none;
      opacity: 0;

      transition: display 500ms, opacity 500ms;
      transition-behavior: allow-discrete;

      position: absolute;
      z-index: 10;
      top: 0;
      right: 0;
      padding: 4rem 2rem 2rem 2rem;
      border-radius: 0 0 0 var(--border-radius-3);
      background: var(--background-accent-main);

      ul {
        flex-direction: column;
        gap: 0;
        font-size: var(--fs-700);
        font-family: var(--ff-heading);
        font-weight: 700;
      }

      li {
        translate: 0;
        opacity: 1;

        transition: opacity 150ms, translate 450ms;
        transition-delay: var(--delay, 50ms);

        &:nth-child(2) {
          --delay: 100ms;
        }

        &:nth-child(3) {
          --delay: 150ms;
        }
      }

      li + li {
        margin-top: 1rem;
        padding-top: 1rem;
        border-top: 2px solid var(--background-accent-light);
      }
    }

    [aria-expanded="true"] ~ .primary-navigation {
      display: block;
      opacity: 1;

      @starting-style {
        display: block;
        opacity: 0;
      }

      li {
        translate: 0;
        opacity: 1;

        @starting-style {
          translate: 100%;
          opacity: 0;
        }
      }
    }
  }

  .site-footer {
    background-color: var(--background-extra-dark);
    padding-block: 2rem;
    text-align: center;

    /* either use .grid-flow and change the --grid-flow-spacing, or do this */
    display: grid;
    gap: 1rem;

    ul {
      display: flex;
      gap: 2rem;
      justify-content: center;
      padding-block-start: 0.5rem;
    }

    a {
      text-decoration: none;
      color: var(--text-main);

      &:hover,
      &:focus-visible {
        color: var(--text-brand-light);
      }
    }
  }

  .site-footer__title {
    font-size: var(--font-size-md);
    font-family: var(--ff-heading);
    font-weight: 700;
  }

  .hero {
    text-align: center;
    background-color: var(--background-accent-dark);
    font-size: var(--font-size-md);
  }

  /* Only add animation if .has-scroll-animation is present */
  .hero.has-scroll-animation {
    animation: fade-out forwards;
    animation-timeline: view();
    animation-range-start: exit;
  }

  .hero__title {
    font-size: var(--font-size-heading-xl);

    > span {
      display: block;
      font-size: var(--font-size-heading-regular);
      color: var(--text-brand-light);
    }
  }

  .projects-catalog {
    --card-title-color: var(--text-high-contrast);
    --card-title-font-size: var(--font-size-lg);

    --card-gap: 0.75rem;
  }

  .courses-catalog {
    --card-title-color: var(--text-high-contrast);
    --card-title-font-size: var(--font-size-lg);

    --card-gap: 0.75rem;
  }

  .card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--background-extra-dark);
    border-radius: var(--border-radius-3);

    img {
      border-radius: var(--border-radius-2);
      width: 100%;
      height: auto;
    }
  }

  .card__title {
    color: var(--card-title-color, var(--text-brand));
    font-size: var(--card-title-font-size, var(--font-size-heading-sm));
  }

  .card__links {
    margin-top: auto;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
  }
  .card__note {
    margin-top: auto;
    background-color: var(--background-extra-light);
    padding: 0.75rem;
    border-radius: var(--border-radius-2);
  }

  .button {
    display: inline flex;
    cursor: pointer;
    font-family: var(--ff-heading);
    font-weight: 700;
    font-size: var(--font-size-md);
    text-decoration: none;
    background-color: var(--background-accent-main);
    padding: 0.5rem;
    border-radius: var(--border-radius-2);
  }

  .button:hover,
  .button:focus-visible {
    background: var(--background-accent-light);
    color: var(--text-high-contrast);
  }

  select {
    font-family: var(--ff-heading);
    background-color: var(--background-accent-main);
    color: var(--text-high-contrast);
    padding: 0.5rem 0.3rem;
    border: 0;
    border-radius: var(--border-radius-2);
  }

  .tag-list {
    display: flex;
    gap: var(--tag-list-gap, 12px);
    flex-flow: wrap;

    > li {
      padding: 0 0.5rem;
      color: var(--text-high-contrast);
      font-family: var(--ff-heading);
      font-size: var(--font-size-sm);
      background-color: var(--tag-background);
      border-radius: var(--border-radius-1);

      &[data-organization="frontend-masters"] {
        --tag-background: var(--clr-frontend-masters-500);
      }
      &[data-organization="freecodecamp"] {
        --tag-background: var(--clr-freecodecamp-500);
      }

      &[data-tech="html"] {
        --tag-background: var(--clr-html-500);
      }
      &[data-tech="javascript"] {
        --tag-background: var(--clr-javascript-500);
      }
      &[data-tech="css"] {
        --tag-background: var(--clr-css-500);
      }
      &[data-tech="react"] {
        --tag-background: var(--clr-react-500);
      }
      &[data-tech="tailwind-css"] {
        --tag-background: var(--clr-tailwind-500);
      }
      &[data-tech="typescript"] {
        --tag-background: var(--clr-typescript-500);
      }
      &[data-tech="node.js"] {
        --tag-background: var(--clr-node-500);
      }
      &[data-tech="next.js"] {
        --tag-background: var(--clr-next-500);
      }
      &[data-tech="accessibility"] {
        --tag-background: var(--clr-accessibility-500);
      }
      &[data-tech="git"] {
        --tag-background: var(--clr-git-500);
      }
      &[data-tech="github"] {
        --tag-background: var(--clr-github-500);
      }
      &[data-tech="vite"] {
        --tag-background: var(--clr-vite-500);
      }
      &[data-tech="vitest"] {
        --tag-background: var(--clr-vitest-500);
      }
      &[data-tech="sqlite"] {
        --tag-background: var(--clr-sqlite-500);
      }
      &[data-tech="netlify"] {
        --tag-background: var(--clr-netlify-500);
      }
      &[data-tech="render"] {
        --tag-background: var(--clr-render-500);
      }
      &[data-tech="tanstack"] {
        --tag-background: var(--clr-tanstack-500);
      }
      &[data-tech="next-intl"] {
        --tag-background: var(--clr-next-intl-500);
      }
      &[data-tech="ui-ux"] {
        --tag-background: var(--clr-ui-ux-500);
      }
      &[data-tech="figma"] {
        --tag-background: var(--clr-figma-500);
      }
      &[data-tech="vscode"] {
        --tag-background: var(--clr-vscode-500);
      }
      &[data-tech="performance"] {
        --tag-background: var(--clr-performance-500);
      }
      &[data-tech="express"] {
        --tag-background: var(--clr-express-500);
      }
      &[data-tech="linux"] {
        --tag-background: var(--clr-linux-500);
      }
      &[data-tech="docker"] {
        --tag-background: var(--clr-docker-500);
      }
      &[data-tech="nginx"] {
        --tag-background: var(--clr-nginx-500);
      }
    }
  }
}

@layer utilities {
  [hidden] {
    display: none;
  }

  /* Disable animations during resizing to improve performance */
  .resizing * {
    transition: none !important;
    animation: none !important;
  }

  .text-center {
    text-align: center;
  }
  .text-brand {
    color: var(--text-brand);
  }
  .text-high-contrast {
    color: var(--text-high-contrast);
  }

  .section-title {
    font-size: var(--font-size-heading-regular);
  }

  .background-base {
    background-color: var(--background-base);
  }
  .background-light {
    background-color: var(--background-light);
  }
  .background-extra-light {
    background-color: var(--background-extra-light);
  }
  .background-dark {
    background-color: var(--background-dark);
  }
  .background-extra-dark {
    background-color: var(--background-extra-dark);
  }

  .background-accent {
    background-color: var(--background-accent-dark);
  }

  .font-size-sm {
    font-size: var(--font-size-sm);
  }
  .font-size-regular {
    font-size: var(--font-size-regular);
  }
  .font-size-md {
    font-size: var(--font-size-md);
  }
  .font-size-lg {
    font-size: var(--font-size-lg);
  }

  .visually-hidden {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
  }
}

@keyframes fade-out {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}