:root {
  --color-bg: #000000;
  --color-brand: #d0c0a8;
  --color-text: #aaa294;
  --color-link: #c4b7a0;
  --color-link-hover: #d0c0a8;
  --color-link-hover-bg: #1a1814;
  --color-link-visited: #8e877a;
  --color-link-active: #000000;
  --color-link-active-bg: #d0c0a8;
  --color-focus: #d0c0a8;
  --color-muted: #6f6759;
  --color-disabled: #4e4a42;
  --color-border: #2a2822;
  --color-separator: #1a1814;
  --color-panel: #0c0b09;
  --color-code-bg: #0a0908;
  --color-code-fg: #b8b09e;
  --color-inline-code-bg: #1a1814;
  --color-inline-code-fg: #c6baa8;
  --color-success: #8e9a74;
  --color-success-bg: #11120e;
  --color-warning: #c4a05a;
  --color-warning-bg: #18130b;
  --color-error: #c17a6c;
  --color-error-bg: #170f0d;
  --color-info: #8a8680;
  --color-info-bg: #121110;
  --color-on-brand: #000000;
  --color-button-hover: #c4b498;
  --color-button-active: #b8a888;
  --font-mono: Consolas, "SF Mono", monospace;
  --tracking-label: 0.16em;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --header-h: 4rem;
  --max: 72rem;
}

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

html {
  background: var(--color-bg);
  color-scheme: dark;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.5;
}

button:not(:disabled),
[role="button"]:not(:disabled) {
  cursor: pointer;
}

::selection {
  background: var(--color-brand);
  color: var(--color-on-brand);
}

:focus-visible {
  outline: 0.125rem solid var(--color-focus);
  outline-offset: 0.125rem;
}

:focus:not(:focus-visible) {
  outline: none;
}

img,
video,
svg {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.skip {
  position: absolute;
  left: -624.9375rem;
}
.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 80;
  background: var(--color-brand);
  color: var(--color-on-brand);
  padding: 0.5rem 0.75rem;
  text-decoration: none;
}

/* —— PlanetScale-style header: logo left, links, right actions —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-bg);
  border-bottom: 0.0625rem solid var(--color-border);
}

.site-header-bar {
  display: flex;
  align-items: center;
  height: var(--header-h);
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  flex-shrink: 0;
}
.brand-mark {
  display: block;
  height: 2.5rem;
  width: auto;
  max-width: none;
  flex-shrink: 0;
}
.brand-name {
  color: var(--color-brand);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.lang {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: auto;
  flex-shrink: 0;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}
.lang a {
  color: var(--color-muted);
  text-decoration: none;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  padding: 0 0.15rem;
}
.lang a:hover {
  color: var(--color-link-hover);
  background: var(--color-link-hover-bg);
}
.lang a[aria-current="true"] {
  color: var(--color-brand);
  pointer-events: none;
}
.lang-sep {
  color: var(--color-disabled);
}

.nav-primary {
  display: none;
  align-items: center;
  gap: 0.15rem;
  flex: 1;
  min-width: 0;
}

.nav-primary > a,
.nav-item > button {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0 0.75rem;
  color: var(--color-muted);
  background: none;
  border: 0;
  font: inherit;
  font-size: 0.8125rem;
  text-decoration: none;
  transition: color 150ms var(--ease), background-color 150ms var(--ease);
}
.nav-primary > a:hover,
.nav-item > button:hover {
  color: var(--color-link-hover);
  background: var(--color-link-hover-bg);
}
.nav-primary > a[aria-current="page"] {
  color: var(--color-brand);
}

.nav-item {
  position: relative;
}
.nav-menu {
  display: none;
  position: absolute;
  top: calc(100% - 0.25rem);
  left: 0;
  min-width: 14rem;
  padding: 0.4rem 0;
  background: var(--color-bg);
  border: 0.0625rem solid var(--color-border);
  z-index: 60;
}
.nav-item:hover .nav-menu,
.nav-item:focus-within .nav-menu,
.nav-item.open .nav-menu {
  display: block;
}
.nav-menu a {
  display: block;
  padding: 0.55rem 1rem;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.8125rem;
}
.nav-menu a:hover {
  color: var(--color-brand);
  background: var(--color-link-hover-bg);
}
.nav-menu .meta {
  display: block;
  color: var(--color-muted);
  font-size: 0.6875rem;
  margin-top: 0.15rem;
}

.nav-actions {
  display: none;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
  flex-shrink: 0;
}
.nav-actions .ext {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.75rem;
  padding: 0.5rem 0.6rem;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
}
.nav-actions .ext:hover {
  color: var(--color-link-hover);
  background: var(--color-link-hover-bg);
}

.clock {
  color: var(--color-muted);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  padding: 0 0.5rem;
  margin-left: 0.75rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.25rem;
  padding: 0 0.9rem;
  background: var(--color-brand);
  color: var(--color-on-brand);
  border: 0.0625rem solid var(--color-brand);
  font: inherit;
  font-size: 0.8125rem;
  text-decoration: none;
  transition: background-color 150ms var(--ease);
}
.btn-primary:hover {
  background: var(--color-button-hover);
  border-color: var(--color-button-hover);
  color: var(--color-on-brand);
}
.btn-primary:active {
  background: var(--color-button-active);
}

.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.3125rem;
  width: 2.75rem;
  height: 2.75rem;
  margin-left: auto;
  padding: 0;
  background: none;
  border: 0;
}
.nav-toggle span {
  display: block;
  width: 1.125rem;
  height: 0.0625rem;
  background: var(--color-brand);
  margin-left: 0.8125rem;
}

.nav-mobile {
  display: none;
  border-top: 0.0625rem solid var(--color-separator);
  padding: 0.5rem 1rem 1.25rem;
  background: var(--color-bg);
}
.nav-mobile.open {
  display: block;
}
.nav-mobile a,
.nav-mobile .label {
  display: block;
  padding: 0.85rem 0.5rem;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 0.0625rem solid var(--color-separator);
  min-height: 2.75rem;
}
.nav-mobile a:hover {
  color: var(--color-brand);
  background: var(--color-link-hover-bg);
}
.nav-mobile .label {
  color: var(--color-muted);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-label);
  border: 0;
  padding-bottom: 0.25rem;
}
.nav-mobile button.label {
  width: 100%;
  text-align: left;
  background: none;
  font: inherit;
  cursor: pointer;
}
.nav-collapse {
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  transition: max-height 250ms var(--ease), visibility 250ms var(--ease);
}
.nav-collapse.open {
  max-height: 14rem;
  visibility: visible;
}

@media (min-width: 60rem) {
  .nav-primary,
  .nav-actions {
    display: flex;
  }
  .lang {
    margin-left: 0;
  }
  .nav-toggle,
  .nav-mobile,
  .nav-mobile.open {
    display: none !important;
  }
}

/* —— page body —— */
.page {
  flex: 1;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

.kicker {
  font-size: 0.75rem;
  letter-spacing: var(--tracking-label);
  color: var(--color-muted);
}

h1 {
  margin: 1rem 0 0;
  color: var(--color-brand);
  font-size: 2.5rem;
  font-weight: 500;
  line-height: 1.15;
  text-wrap: balance;
}

.lede {
  margin: 1.25rem auto 0;
  color: var(--color-muted);
  max-width: 63rem;
  font-size: 1.125rem;
}

.prose {
  margin: 0.75rem auto 0;
  max-width: 63rem;
  text-wrap: pretty;
  font-size: 1.125rem;
}
.page .prose:not(.prose + .prose) { margin-top: 2rem; }

code.inline {
  background: var(--color-inline-code-bg);
  color: var(--color-inline-code-fg);
  padding: 0.15em 0.4em;
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.section {
  margin-top: 3.5rem;
}
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  border-bottom: 0.0625rem solid var(--color-separator);
  padding-bottom: 1rem;
}
.section-marker {
  display: inline-block;
  width: 0.18em;
  height: 0.8em;
  vertical-align: middle;
  margin-right: 0.6em;
  background: var(--color-warning);
}
.idx {
  font-size: 0.75rem;
  color: var(--color-disabled);
  font-variant-numeric: tabular-nums;
}
.section-head h2 {
  margin: 0;
  color: var(--color-brand);
  font-size: 1.5rem;
  font-weight: 500;
  line-height: 1.3;
}

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}
.stack li {
  border: 0.0625rem solid var(--color-border);
  background: var(--color-panel);
  color: var(--color-brand);
  padding: 0.35rem 0.7rem;
  font-size: 0.75rem;
}

.principles {
  margin: 1.25rem 0 0;
  padding: 0;
  border-top: 0.0625rem solid var(--color-separator);
  border-bottom: 0.0625rem solid var(--color-separator);
  list-style: none;
}
.principles li {
  padding: 0.85rem 0;
  border-bottom: 0.0625rem solid var(--color-separator);
  max-width: 40rem;
}
.principles li:last-child {
  border-bottom: 0;
}

.feature-list {
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
  max-width: 40rem;
}
.feature-list li {
  padding: 0.7rem 0;
  border-bottom: 0.0625rem solid var(--color-separator);
  padding-left: 1.25rem;
  position: relative;
}
.feature-list li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--color-muted);
}

.archive {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}
.archive li {
  border-bottom: 0.0625rem solid var(--color-separator);
}
.archive a {
  display: block;
  padding: 1rem 0.25rem;
  text-decoration: none;
  color: inherit;
}
.archive a:hover {
  background: var(--color-link-hover-bg);
}
.archive-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1rem;
}
.year {
  font-size: 0.75rem;
  color: var(--color-muted);
  font-variant-numeric: tabular-nums;
}
.slug {
  color: var(--color-brand);
  font-size: 0.875rem;
}
.tags {
  font-size: 0.75rem;
  color: var(--color-muted);
}
.status-active { color: var(--color-success); }
.status-lab { color: var(--color-info); }
.status-paused { color: var(--color-warning); }
.status-archived { color: var(--color-disabled); }
.summary {
  margin: 0.5rem 0 0;
  max-width: 36rem;
  font-size: 0.875rem;
}

.meta-grid {
  display: grid;
  gap: 0.75rem;
  margin: 2rem 0 0;
  padding: 1.25rem 0;
  border-top: 0.0625rem solid var(--color-separator);
  border-bottom: 0.0625rem solid var(--color-separator);
  font-size: 0.875rem;
}
@media (min-width: 40rem) {
  .meta-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.meta-grid dt {
  font-size: 0.75rem;
  letter-spacing: var(--tracking-label);
  color: var(--color-muted);
}
.meta-grid dd {
  margin: 0.2rem 0 0;
}

.prose-link {
  color: var(--color-link);
  text-decoration: underline;
  text-decoration-thickness: 0.0625rem;
  text-underline-offset: 0.22em;
  text-decoration-color: var(--color-link);
}
.prose-link:visited {
  color: var(--color-link-visited);
  text-decoration-color: var(--color-link-visited);
}
.prose-link:hover {
  color: var(--color-link-hover);
  background: var(--color-link-hover-bg);
  text-decoration-color: var(--color-link-hover);
}
.prose-link:active {
  color: var(--color-link-active);
  background: var(--color-link-active-bg);
  text-decoration: none;
}

.ext-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: 1.5rem 0 0;
}

.blocks {
  display: flex;
  flex-direction: column;
  gap: 4.5rem;
  margin-top: 3rem;
}
/* single spacing source inside blocks: only the gap counts */
.blocks > * {
  margin-top: 0;
  margin-bottom: 0;
}

.media-frame {
  position: relative;
  border: 0.0625rem solid var(--color-border);
  background: var(--color-panel);
}

  border-top: 0.0625rem solid var(--color-separator);
  padding: 0.75rem 1rem;
  color: var(--color-muted);
  font-size: 0.75rem;
}
.media-head {
  padding: 0.65rem 1rem;
  font-size: 0.625rem;
  letter-spacing: var(--tracking-label);
  color: var(--color-muted);
}
.media-frame pre {
  margin: 0;
  overflow-x: auto;
  background: var(--color-code-bg);
  color: var(--color-code-fg);
  padding: 1rem;
  font-size: 0.9375rem;
  line-height: 1.6;
}
.media-frame img {
  display: block;
  width: 100%;
}

.copy-btn {
  position: absolute;
  top: 0.35rem;
  right: 0.4rem;
  z-index: 2;
  padding: 0.4rem 0.7rem;
  font-family: inherit;
  font-size: 0.625rem;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  line-height: 1.2;
  color: var(--color-fg);
  background: var(--color-code-bg);
  border: 0.0625rem solid var(--color-border);
  cursor: pointer;
}
.copy-btn:hover {
  color: var(--color-brand);
  border-color: var(--color-brand);
}
.copy-btn.copied {
  color: var(--color-success);
  border-color: var(--color-success);
}
.copy-btn:focus-visible {
  outline: 0.125rem solid var(--color-brand);
  outline-offset: 0.0625rem;
}

.yt-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.yt-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.status-well {
  border: 0.0625rem solid var(--color-border);
  border-left-width: 0.125rem;
  background: var(--color-panel);
  padding: 0.75rem 1rem;
}
.status-well.info { border-left-color: var(--color-brand); background: var(--color-info-bg); }
.status-well.ok { border-left-color: var(--color-success); background: var(--color-success-bg); }
.status-well.warn { border-left-color: var(--color-warning); background: var(--color-warning-bg); }
.status-well.err { border-left-color: var(--color-error); background: var(--color-error-bg); }
.tag {
  margin-right: 0.75rem;
  font-size: 0.75rem;
  letter-spacing: var(--tracking-label);
}
.tag.info { color: var(--color-info); }
.tag.ok { color: var(--color-success); }
.tag.warn { color: var(--color-warning); }
.tag.err { color: var(--color-error); }

.dl-title {
  font-size: 0.625rem;
  letter-spacing: var(--tracking-label);
  color: var(--color-muted);
}
.dl {
  margin: 0.75rem 0 0;
  border-top: 0.0625rem solid var(--color-separator);
  border-bottom: 0.0625rem solid var(--color-separator);
}
.dl div {
  display: grid;
  gap: 0.25rem;
  padding: 0.75rem 0;
  border-bottom: 0.0625rem solid var(--color-separator);
}
.dl div:last-child { border-bottom: 0; }
@media (min-width: 40rem) {
  .dl div {
    grid-template-columns: 11rem 1fr;
    gap: 1.5rem;
  }
}
.dl dt { color: var(--color-muted); font-size: 0.875rem; }
.dl dd { margin: 0; font-size: 1rem; }

.chart {
  width: 100%;
  height: 13rem;
  display: block;
}
.chart-label {
  fill: var(--color-muted);
  font-size: 0.6875rem;
  font-family: var(--font-mono);
}

.pager {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 0.0625rem solid var(--color-separator);
  font-size: 0.875rem;
}

/* —— PlanetScale-style footer: columns + legal bar —— */
.site-footer {
  margin-top: auto;
  border-top: 0.0625rem solid var(--color-border);
  background: var(--color-bg);
}
.footer-grid {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.5rem 1.5rem 2.5rem;
  display: grid;
  gap: 2.5rem;
}
@media (min-width: 45rem) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }
}
.footer-brand .brand {
  margin-bottom: 0.15rem;
}
.footer-brand .brand-mark {
  height: 3rem;
}
.footer-brand p {
  margin: 0.75rem 0 0;
  color: var(--color-muted);
  max-width: 16rem;
  font-size: 0.8125rem;
}
.footer-col h2 {
  margin: 0 0 1rem;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  color: var(--color-muted);
}
.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
.footer-col a {
  display: inline-block;
  padding: 0.4rem 0;
  min-height: 2.25rem;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.8125rem;
}
.footer-col a:hover {
  color: var(--color-brand);
  background: var(--color-link-hover-bg);
}
.footer-legal {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.25rem 1.5rem 2rem;
  border-top: 0.0625rem solid var(--color-separator);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  color: var(--color-disabled);
  font-size: 0.75rem;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .nav-primary > a,
  .nav-item > button,
  .btn-primary,
  .prose-link {
    transition: none;
  }
}

* {
  scrollbar-width: thin;
  scrollbar-color: #2a2822 #000000;
}

.page.support {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.page.support .kicker,
.page.support h1,
.page.support .lede,
.page.support .prose {
  text-align: center;
}

.page.support .blocks {
  align-items: center;
  gap: 0.5rem;
}

.page.support .ext-links {
  justify-content: center;
  margin-top: 0.5rem;
}

.page.support .qr {
  display: block;
  width: 12.5rem;
  height: 12.5rem;
  margin: 0.75rem auto 0;
  border: 0.1875rem solid var(--color-error);
  border-radius: 0.5rem;
}

.page.support .qr-caption {
  margin-top: 0.75rem;
  color: var(--color-muted);
  font-size: 0.75rem;
}

.site-footer .qr {
  display: inline-block;
  width: 7rem;
  height: 7rem;
  margin-top: 0.5rem;
  border: 0.1875rem solid var(--color-error);
  border-radius: 0.5rem;
  overflow: hidden;
  line-height: 0;
  padding: 0;
}

.site-footer .qr img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

html {
  scroll-padding-top: 3rem;
}

section[id] {
  scroll-margin-top: 4rem;
}

.site-footer .footer-caption {
  margin: 0.5rem 0 0;
  color: var(--color-muted);
  font-size: 0.75rem;
}

/* —— content column: 72rem rail, inner column 63rem centered —— */
.page .section-head,
.page h1 { max-width: 72rem; }
.page .lede,
.page .intro,
.page .prose,
.page .section-body,
.page .blocks,
.page .feature-list,
.page .archive,
.page .ext-links,
.page .pager { max-width: 63rem; margin-inline: auto; }

/* —— centered blockish groups —— */
.page .meta-grid,
.page .ext-links,
.page .dl { text-align: center; }
.page .meta-grid,
.page .dl,
.page .status-well { width: fit-content; margin-inline: auto; }
.page .status-well { max-width: 50rem; text-align: center; }