/* Open source: overview cards (/open-source/) and project pages (/open-source/<slug>/) */

/* Icon tile: app icon image, or a line glyph on an accent-tinted tile */
.os-icon {
  --project-accent: var(--color-accent);
  --size: 3.5rem;
  display: grid;
  place-items: center;
  flex: none;
  width: var(--size);
  aspect-ratio: 1;
  border-radius: 24%;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 25%, color-mix(in srgb, var(--project-accent) 35%, transparent), transparent 70%),
    color-mix(in srgb, var(--project-accent) 12%, var(--color-surface-alt));
  border: 1px solid color-mix(in srgb, var(--project-accent) 35%, var(--color-border));
  color: var(--color-accent-alt);
  box-shadow: 0 6px 18px -8px color-mix(in srgb, var(--project-accent) 70%, transparent);
}

.os-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.os-icon svg {
  width: 55%;
}

/* ---------- Overview ---------- */

.os-cards {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(auto-fill, minmax(min(19rem, 100%), 1fr));
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}

.os-cards > li {
  display: flex;
}

.os-cards article {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-4);
  background: linear-gradient(145deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-l);
  box-shadow: var(--shadow-m);
  transition: border-color var(--duration-base) var(--ease-standard), transform var(--duration-base) var(--ease-standard), box-shadow var(--duration-base) var(--ease-standard);
}

.os-cards article:hover,
.os-cards article:focus-within {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 4px 22px -4px rgba(255,122,0,.35), var(--shadow-m);
}

.os-cards article .os-icon {
  margin-bottom: var(--space-2);
}

/* Status pill */
.os-cards article > span:not(.os-icon) {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  padding: .25rem .55rem;
  border: 1px solid color-mix(in srgb, var(--color-accent) 24%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
  color: var(--color-accent-alt);
  font-size: .65rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  line-height: 1;
}

/* Kind label */
.os-cards article > p:first-of-type {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.os-cards h3 {
  margin: 0;
  font-size: clamp(1.15rem, 1.05rem + .4vw, 1.4rem);
}

/* Whole card is the link target */
.os-cards h3 a {
  position: static;
  color: var(--color-text);
}

.os-cards h3 a::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  height: auto;
  width: auto;
  background: none;
  border-radius: inherit;
  transform: none;
}

.os-cards article:hover h3 a,
.os-cards h3 a:focus-visible {
  color: var(--color-accent);
}

.os-cards h3 a:focus-visible {
  outline: none;
}

.os-cards h3 a:focus-visible::after {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

.os-cards article > p:last-of-type {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--font-size-s);
  line-height: var(--line-height-loose);
}

/* Tech chips */
.os-cards article ul {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  margin: auto 0 0;
  padding: var(--space-3) 0 0;
  list-style: none;
}

.os-cards article ul li {
  padding: .2rem .5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-s);
  background: color-mix(in srgb, var(--color-bg) 40%, transparent);
  font-size: var(--font-size-xs);
  color: var(--color-muted);
}

.os-cta {
  margin-top: var(--space-6);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-l);
  background:
    radial-gradient(circle at 0% 0%, rgba(255,122,0,.16), transparent 55%),
    var(--color-surface);
}

.os-cta h2 {
  margin-top: 0;
}

.os-cta p {
  max-width: var(--max-content-width);
  color: var(--color-muted);
}

/* ---------- Project page ---------- */

.os-back {
  display: inline-block;
  margin-bottom: var(--space-4);
  font-size: var(--font-size-s);
}

.os-back::before {
  content: "← ";
}

.os-hero {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--space-4);
}

.os-hero .os-icon {
  --size: clamp(5rem, 4rem + 4vw, 7.5rem);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--project-accent) 20%, transparent), 0 18px 48px -18px var(--project-accent);
}

.os-hero > div {
  flex: 1 1 22rem;
}

.os-hero p:first-child {
  margin: 0;
  color: var(--color-accent-alt);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.os-hero h1 {
  margin: var(--space-1) 0 var(--space-2);
}

.os-hero h1 + p {
  max-width: 48ch;
  font-size: var(--font-size-l);
  line-height: var(--line-height-tight);
  color: var(--color-muted);
}

.os-shot {
  margin: var(--space-5) 0 0;
}

.os-shot img {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-l);
  box-shadow: 0 24px 60px -30px rgba(0,0,0,.8);
}

.os-shot figcaption {
  margin-top: var(--space-2);
  color: var(--color-muted);
  font-size: var(--font-size-s);
}

.os-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-4);
}

@media (min-width: 60rem) {
  .os-layout {
    grid-template-columns: minmax(0, 1fr) 18rem;
    align-items: start;
  }

  .os-facts {
    position: sticky;
    top: var(--space-4);
  }
}

.os-body {
  max-width: var(--max-content-width);
}

.os-body h2 {
  margin-top: var(--space-5);
}

.os-body h3 {
  margin: var(--space-4) 0 var(--space-2);
  font-size: var(--font-size-m);
}

.os-body p,
.os-body li {
  line-height: var(--line-height-loose);
}

.os-body ul,
.os-body ol {
  margin: 0 0 var(--space-3);
  padding-left: 1.25em;
}

.os-body li + li {
  margin-top: .35rem;
}

.os-body li::marker {
  color: var(--color-accent);
}

.os-body pre {
  position: relative;
  margin: 0 0 var(--space-3);
  padding: var(--space-3);
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  background: var(--color-bg);
  font-size: var(--font-size-s);
  line-height: var(--line-height-base);
}

.os-body code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.os-body pre button {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  padding: .25rem .55rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-s);
  background: var(--color-surface-alt);
  color: var(--color-muted);
  font-size: var(--font-size-xs);
}

.os-body pre button:hover,
.os-body pre button:focus-visible {
  border-color: var(--color-accent);
  color: var(--color-text);
}

.os-body pre:has(button) code {
  display: block;
  padding-right: 5rem;
}

.os-facts {
  margin-top: var(--space-5);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-l);
  background: linear-gradient(145deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
}

.os-facts h2,
.os-facts h3 {
  margin: 0 0 var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.os-facts h3 {
  margin-top: var(--space-4);
}

.os-facts dl {
  display: grid;
  gap: var(--space-3);
  margin: 0;
}

.os-facts dt {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
}

.os-facts dd {
  margin: 0;
  font-size: var(--font-size-s);
}

.os-facts ul {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--font-size-s);
}

.os-facts a::before {
  content: "↗ ";
}

.os-pager {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.os-pager a {
  flex: 0 1 18rem;
  display: flex;
  flex-direction: column;
  gap: .2rem;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-m);
  color: var(--color-text);
  font-weight: 600;
  transition: border-color var(--duration-base) var(--ease-standard), background var(--duration-base) var(--ease-standard);
}

.os-pager a::after {
  display: none;
}

.os-pager a:hover,
.os-pager a:focus-visible {
  border-color: var(--color-accent);
  background: var(--color-surface);
}

.os-pager a[rel="next"] {
  margin-left: auto;
  text-align: right;
}

.os-pager span {
  color: var(--color-muted);
  font-size: var(--font-size-xs);
  font-weight: 400;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.os-pager a[rel="prev"] span::before {
  content: "← ";
}

.os-pager a[rel="next"] span::after {
  content: " →";
}

html[data-theme="light"] .os-cards article {
  box-shadow: 0 1px 2px rgba(0,0,0,.08), 0 3px 10px -2px rgba(0,0,0,.08);
}

html[data-theme="light"] .os-icon,
html[data-theme="light"] .os-hero p:first-child {
  color: var(--color-accent);
}

html[data-theme="light"] .os-shot img {
  box-shadow: 0 18px 40px -24px rgba(0,0,0,.35);
}

@media (prefers-reduced-motion: reduce) {
  .os-cards article {
    transition: none;
  }

  .os-cards article:hover,
  .os-cards article:focus-within {
    transform: none;
  }
}