* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
body {
  margin: 0;
  background: var(--mca-background);
  color: var(--mca-text);
  font:
    17px/1.55 system-ui,
    sans-serif;
}
a {
  color: inherit;
  text-underline-offset: 4px;
}
button,
input,
select {
  font: inherit;
}
button,
select,
summary {
  cursor: pointer;
}
button,
input,
select {
  border: 2px solid var(--mca-border-interactive);
  border-radius: 8px;
  background: var(--mca-surface);
  color: var(--mca-text);
}
button,
input,
select {
  min-height: 48px;
  padding: 10px 14px;
}
.select-control {
  position: relative;
  min-width: 0;
}
.select-control select {
  appearance: none;
  width: 100%;
  padding-right: 40px;
}
.select-control::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 16px;
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: translateY(-70%) rotate(45deg);
  pointer-events: none;
}
:focus-visible {
  outline: 3px solid var(--mca-focus-ring);
  outline-offset: 5px;
}
::selection {
  background: var(--mca-selected-surface);
  color: var(--mca-on-selected);
}
[hidden] {
  display: none !important;
}
h1,
h2,
h3,
p {
  margin: 0;
}
h1,
h2,
h3 {
  line-height: 1.06;
  letter-spacing: -0.045em;
}
h1 {
  font-size: clamp(42px, 5vw, 72px);
  font-weight: 650;
}
h2 {
  font-size: clamp(36px, 4vw, 56px);
  font-weight: 600;
}
h3 {
  font-size: 24px;
  font-weight: 600;
}
.frame {
  width: min(1440px, 100%);
  margin-inline: auto;
  padding-inline: 32px;
}
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 112px;
}
.wordmark {
  font-size: 24px;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.04em;
}
.mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--mca-text);
  color: var(--mca-background);
  font-size: 28px;
}
nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
nav a {
  text-decoration: none;
  padding-block: 12px;
}
nav a:hover,
.site-footer a:hover {
  text-decoration: underline;
}
.board {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 8px;
}
.tile {
  min-width: 0;
  border-radius: 10px;
  padding: 40px;
  background: var(--mca-surface);
}
.intro {
  display: flex;
  flex-direction: column;
  align-items: start;
  padding: 56px 40px 32px;
}
.intro > p {
  font-size: 20px;
  max-width: 39ch;
  margin-top: 32px;
}
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 15px 22px;
  min-height: 56px;
  border-radius: 8px;
  background: var(--mca-action, var(--mca-primary));
  color: var(--mca-on-action, var(--mca-on-primary));
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.18s ease;
}
.primary-button:hover {
  background: var(--mca-action-hover, var(--mca-primary-hover));
  color: var(--mca-on-action-hover, var(--mca-on-primary-hover));
  transform: translateY(-3px);
}
.intro .primary-button {
  margin-top: 32px;
}
.hero-note {
  margin-top: auto;
  padding-top: 48px;
  font-size: 15px;
}
.palette {
  background: var(--mca-secondary);
  color: var(--mca-on-secondary);
  display: flex;
  flex-direction: column;
}
.palette-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
}
.palette h2 {
  font-size: clamp(28px, 3vw, 40px);
  max-width: 18ch;
}
.palette > p {
  margin-top: 24px;
}
.swatch-display {
  display: flex;
  min-height: 170px;
  margin-block: 32px;
  border-radius: 8px;
  overflow: hidden;
}
.swatch {
  display: flex;
  flex: 1;
  min-width: 0;
  flex-direction: column;
  justify-content: space-between;
  padding: 16px 12px;
  font-size: 13px;
}
.swatch code {
  font: inherit;
  font-variant-numeric: tabular-nums;
}
.swatch-primary {
  background: var(--mca-primary);
  color: var(--mca-on-primary);
}
.swatch-secondary {
  background: var(--mca-secondary);
  color: var(--mca-on-secondary);
}

.swatch-accent {
  background: var(--mca-accent);
  color: var(--mca-on-accent);
}
.theme-control {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) 48px auto;
  gap: 12px 8px;
  margin-top: auto;
}
.theme-control select {
  min-width: 0;
  padding-left: 12px;
}
.theme-control label {
  grid-column: 1 / -1;
  font-size: 15px;
}
#random-theme {
  white-space: nowrap;
}
.theme-control button:hover {
  background: var(--mca-selected-surface);
  color: var(--mca-on-selected);
}
.theme-credit {
  font-size: 14px;
  margin-top: 20px;
}
.catalog {
  margin-block: 96px;
}
.section-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}
.filters {
  display: flex;
  gap: 20px;
  align-items: end;
  margin-bottom: 32px;
}
.filters label {
  display: block;
  font-size: 14px;
  margin-bottom: 8px;
}
.search-field {
  flex: 1;
}
.search-field input {
  width: 100%;
}
.category-field select {
  min-width: 240px;
}
#result-count {
  min-width: 80px;
  padding-block: 12px;
  text-align: right;
  font-size: 15px;
}
.skill-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.skill {
  background: var(--mca-surface);
  border-radius: 10px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  align-items: start;
  min-height: 280px;
  animation: arrive 0.45s both;
}
.skill:nth-child(3n + 2) {
  animation-delay: 0.06s;
}
.skill:nth-child(3n) {
  animation-delay: 0.12s;
}
.skill-group {
  font-size: 14px;
  color: var(--mca-text-muted);
  margin-bottom: 22px;
}
.skill h3 {
  width: 100%;
  font-size: clamp(20px, 2vw, 26px);
  letter-spacing: -0.04em;
  overflow-wrap: anywhere;
}
.skill h3 a {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 8px;
  text-decoration: none;
}
.skill h3 a:hover {
  text-decoration: underline;
}
.skill h3 span {
  flex-shrink: 0;
  font-size: 20px;
}
.skill > p {
  margin-block: 18px 28px;
}
.skill details {
  margin-top: auto;
  width: 100%;
  font-size: 14px;
}
.skill summary {
  padding-block: 6px;
}
.skill details p {
  margin-top: 12px;
  font-size: 16px;
}
.empty p {
  margin-block: 20px;
}
.getting-started {
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
}
.start-intro {
  background: var(--mca-primary);
  color: var(--mca-on-primary);
}
.start-intro p {
  margin-block: 28px 32px;
  max-width: 40ch;
}
.instructions {
  margin: 0;
  list-style-position: inside;
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.instructions li::marker {
  font-size: 14px;
}
.instructions h3 {
  display: inline;
  margin-left: 8px;
}
.instructions p {
  margin-top: 14px;
}
code {
  font-size: 0.9em;
}
.contribute {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 8px;
  background: var(--mca-accent);
  color: var(--mca-on-accent);
}
.contribute p {
  font-size: 24px;
  letter-spacing: -0.03em;
}
.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 56px;
  font-size: 14px;
}
.site-footer > div {
  display: flex;
  gap: 24px;
}
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  padding: 12px;
  background: var(--mca-surface);
  z-index: 2;
}
.skip-link:focus {
  top: 8px;
}
@keyframes arrive {
  from {
    opacity: 0.3;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (max-width: 1000px) {
  .theme-control {
    grid-template-columns: 48px 48px minmax(0, 1fr);
  }
  .theme-control .select-control {
    grid-column: 1 / -1;
    grid-row: 2;
  }
  #random-theme {
    font-size: 14px;
    padding-inline: 8px;
  }
  .frame {
    padding-inline: 24px;
  }
  .board {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
  h1 {
    font-size: clamp(32px, 4.5vw, 46px);
  }
  .tile {
    padding: 28px;
  }
  .intro {
    padding-top: 40px;
  }
  .skill-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .skill {
    padding: 24px;
  }
  .site-footer {
    flex-wrap: wrap;
  }
  .site-footer > div {
    width: 100%;
  }
}
@media (max-width: 650px) {
  .frame {
    padding-inline: 16px;
  }
  .site-header {
    min-height: 96px;
    gap: 12px;
    flex-wrap: wrap;
    padding-block: 20px;
  }
  .wordmark {
    font-size: 22px;
  }
  nav {
    gap: 18px;
    font-size: 14px;
  }
  .mark {
    display: none;
  }
  nav a:nth-child(2) {
    display: none;
  }
  .board {
    grid-template-columns: minmax(0, 1fr);
  }
  .tile {
    padding: 28px 24px;
  }
  h1 {
    font-size: clamp(36px, 9.3vw, 60px);
  }
  .intro > p {
    font-size: 18px;
    margin-top: 24px;
  }
  .hero-note {
    padding-top: 32px;
  }
  .palette h2 {
    font-size: 32px;
    max-width: 12ch;
  }
  .swatch-display {
    min-height: 150px;
  }
  .swatch {
    padding-inline: 8px;
  }
  .catalog {
    margin-block: 64px;
  }
  .section-heading {
    display: block;
  }
  .section-heading p {
    margin-top: 20px;
  }
  .filters {
    flex-wrap: wrap;
    gap: 16px;
  }
  .search-field {
    flex-basis: 100%;
  }
  .category-field {
    flex: 1;
    min-width: 0;
  }
  .category-field select {
    min-width: 0;
    width: 100%;
  }
  #result-count {
    min-width: 64px;
  }
  .skill-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .skill {
    min-height: 250px;
  }
  .skill h3 {
    font-size: 26px;
  }
  .contribute {
    display: block;
  }
  .contribute a {
    display: inline-block;
    margin-top: 16px;
  }
  .site-footer {
    display: block;
    padding-block: 40px;
  }
  .site-footer p {
    margin-block: 16px;
  }
  .site-footer > div {
    flex-wrap: wrap;
    gap: 12px 24px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

body:has(.skill-reader[open]) {
  overflow: hidden;
}
.skill-reader {
  width: min(1000px, calc(100% - 32px));
  max-width: 100%;
  max-height: calc(100dvh - 48px);
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: var(--mca-surface);
  color: var(--mca-text);
}
.skill-reader[open] {
  display: flex;
  flex-direction: column;
}
.skill-reader::backdrop {
  background: rgb(0 0 0 / 55%);
}
.reader-header {
  flex-shrink: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 32px;
  background: var(--mca-background);
}
#reader-title {
  font-size: 24px;
  overflow-wrap: anywhere;
}
.reader-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}
.reader-actions a {
  font-size: 15px;
  white-space: nowrap;
}
#close-reader {
  white-space: nowrap;
}
.reader-document {
  min-height: 0;
  overflow: auto;
  overscroll-behavior: contain;
  padding: 32px 48px 48px;
  line-height: 1.7;
  overflow-wrap: anywhere;
}
.reader-document > * {
  margin-block: 0 24px;
}
.reader-document h1 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.15;
  margin-bottom: 28px;
}
.reader-document h2 {
  font-size: 28px;
  line-height: 1.25;
  margin-top: 40px;
}
.reader-document h3,
.reader-document h4,
.reader-document h5,
.reader-document h6 {
  font-size: 22px;
  line-height: 1.3;
  margin-top: 28px;
}
.reader-document li + li {
  margin-top: 10px;
}
.reader-document li > p {
  margin-block: 10px;
}
.reader-document pre {
  padding: 20px;
  background: var(--mca-background);
  overflow: auto;
  border-radius: 8px;
  line-height: 1.5;
  white-space: pre;
  overflow-wrap: normal;
}
.reader-document :not(pre) > code {
  background: var(--mca-background);
  padding: 2px 5px;
  border-radius: 4px;
}
.reader-document table {
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 15px;
}
.reader-document th,
.reader-document td {
  text-align: left;
  padding: 12px;
  border: 1px solid var(--mca-border-subtle);
}
.reader-document th {
  background: var(--mca-background);
}
.reader-document blockquote {
  margin-inline: 0;
  padding: 16px 24px;
  border-left: 4px solid var(--mca-border-interactive);
  background: var(--mca-background);
}
.reader-document img {
  max-width: 100%;
  height: auto;
}
.skill-metadata {
  font-size: 14px;
}
.skill-metadata pre {
  margin-top: 16px;
  white-space: pre-wrap;
}
@media (max-width: 650px) {
  .skill-reader {
    max-height: calc(100dvh - 24px);
    width: calc(100% - 16px);
  }
  .reader-header {
    padding: 20px;
  }
  .reader-actions {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }
  .reader-document {
    padding: 24px 20px;
  }
  .reader-document h2 {
    font-size: 24px;
  }
  .reader-document ul,
  .reader-document ol {
    padding-left: 24px;
  }
}