:root {
  --speed: 250ms;
  --curve: cubic-bezier(0, 0.55, 0.45, 1);
  --font-sans: "Google Sans", Arial, Helvetica, sans-serif;
}

:root,
[data-theme="light"] {
  --background: #ffffff;
  --foreground: #171717;
  --accent: #1d3207;
  --accent-contrast: #afe67e;
  --text-opacity: 75%;
}

[data-theme="dark"] {
  --background: #000;
  --foreground: #ededed;
  --accent: #afe67e;
  --accent-contrast: #1d3207;
  --text-opacity: 60%;
}

* {
  transition: color var(--speed) var(--curve);
  text-wrap: pretty;
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

::selection {
  background: var(--accent);
  color: var(--accent-contrast);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

body,
html {
  max-width: 100vw;
  overflow-x: hidden;
}

body {
  color: var(--foreground);
  background: var(--background);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--speed) var(--curve), color var(--speed) var(--curve);
}

a {
  color: inherit;
  text-decoration: none;
}

/* ---- page layout ---- */

.page {
  --padding-x: 1.618em;
  --padding-y: 1.618em;
  flex: 1 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--padding-y);
  font-family: var(--font-sans);
  max-width: 60rem;
  margin: 0 auto;
  padding: var(--padding-y) var(--padding-x);
  min-height: 100svh;
  text-wrap: pretty;
}

.page-header {
  grid-column: 1 / span 2;
  margin-top: var(--padding-y);
}

.page-title {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.45rem;
}

.page-logo {
  width: 2em;
  height: 2em;
  flex-shrink: 0;
  border-radius: 0.45rem;
}

.page-header h1 {
  font-size: 2em;
  font-weight: 600;
  margin-bottom: 0.45rem;
  text-wrap: pretty;
}

.page-title h1 {
  margin-bottom: 0;
}

.page-footer {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: var(--padding-y);
}

.page-footer,
.page-header p {
  color: color-mix(in srgb, var(--foreground) var(--text-opacity), transparent);
  font-size: 0.875em;
  font-weight: 400;
}

.page-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5em 1em;
}

.page-preferences {
  white-space: nowrap;
}

.page-footer a,
.page-header a {
  position: relative;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, currentColor 20%, transparent);
}

.page-footer a::after,
.page-header a::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  min-width: 44px;
  min-height: 44px;
}

.page-copy > * {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
}

.page-favicon-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  font-size: inherit;
  line-height: 1;
}

.page-favicon-link > span {
  width: 1em;
  height: 1em;
}

.preferences-active {
  color: var(--accent) !important;
  font-weight: 700;
  pointer-events: none;
}

@media (pointer: coarse) {
  .page-copy > *,
  .page-preferences {
    min-height: 44px;
  }
  .page-preferences {
    line-height: 44px;
  }
  .page-footer {
    margin-bottom: 0;
  }
}

@media (max-width: 480px) {
  .page-copy,
  .page-footer {
    flex-direction: column;
    gap: 0.5em;
  }
  .page-copy {
    align-items: flex-start;
  }
}

@media (hover: hover) and (pointer: fine) {
  .page-footer a:hover,
  .page-header a:hover {
    color: var(--accent);
  }
}

/* ---- favicon ---- */

.favicon {
  position: relative;
  width: 1rem;
  height: 1rem;
  overflow: hidden;
  border-radius: 0.2rem;
  flex-shrink: 0;
}

.favicon.favicon-missing {
  background-color: var(--foreground);
}

.favicon img,
.favicon svg {
  position: absolute;
  inset: 0;
  object-fit: contain;
}

.favicon:not(.favicon-loaded) img {
  opacity: 0;
  transform: scale(0.75);
}

[data-theme="dark"] .favicon.favicon-dark img,
[data-theme="light"] .favicon.favicon-light img {
  filter: invert(1);
}

.favicon img {
  width: 100%;
  height: 100%;
}

.favicon svg {
  opacity: 0;
  width: 1rem;
  height: 1rem;
}

@media (hover: hover) and (pointer: fine) {
  a:hover .favicon {
    background-color: transparent;
  }
  a:hover .favicon img {
    opacity: 0;
  }
  a:hover .favicon svg {
    opacity: 1;
  }
  a:not(:hover) .favicon {
    transition: background-color var(--speed) var(--curve);
  }
  a:not(:hover) .favicon img,
  a:not(:hover) .favicon svg {
    transition: filter var(--speed) var(--curve), opacity var(--speed) var(--curve),
      transform var(--speed) var(--curve);
  }
}

/* ---- grid ---- */

.grid {
  grid-column: 1 / span 2;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11.5rem, 1fr));
  flex-direction: column;
  grid-gap: calc(var(--padding-y) * 2) calc(var(--padding-x) * 2);
  gap: calc(var(--padding-y) * 2) calc(var(--padding-x) * 2);
  padding: calc(2 * var(--padding-y)) 0;
  width: 100%;
}

.category {
  position: relative;
  display: flex;
  flex-direction: column;
}

.category::before {
  content: "";
  position: absolute;
  inset: calc(-1 * var(--padding-y) + 1px) calc(-1 * var(--padding-x)) calc(-1 * var(--padding-y));
  outline: 1px solid color-mix(in srgb, var(--foreground) 8%, var(--background));
  background: var(--background);
  pointer-events: none;
  z-index: -1;
  transition: background var(--speed) var(--curve), outline var(--speed) var(--curve);
}

.category[data-wide] {
  grid-column: span 2;
  display: grid;
  grid-template-columns: subgrid;
  grid-template-rows: min-content auto;
}

.category[data-wide] h2 {
  grid-column: 1 / -1;
}

.category h2 {
  font-size: 1em;
  font-weight: 500;
  margin-bottom: calc(var(--padding-y) * 0.5);
}

.column {
  display: flex;
  flex-direction: column;
}

.tool {
  display: flex;
  gap: 0.25rem;
  align-items: center;
}

.tool a {
  display: flex;
  gap: 0.45rem;
  align-items: center;
  font-size: 0.875em;
  font-weight: 400;
  padding: 0.225rem 0;
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, currentColor 20%, transparent);
  color: color-mix(in srgb, var(--foreground) var(--text-opacity), transparent);
}

@media (hover: hover) and (pointer: fine) {
  .tool a:hover {
    text-decoration: underline;
  }
  .tool a:hover,
  .tool a:hover * {
    transition: none !important;
  }
  .tool a:hover {
    color: var(--accent);
  }
}

@media (pointer: coarse) {
  .tool a {
    min-height: 44px;
  }
  .grid {
    padding-bottom: var(--padding-y);
  }
}

@media (max-width: 30rem) {
  .category[data-wide] {
    grid-column: span 1;
    display: flex;
  }
}