:root {
  color-scheme: light dark;
  --sidebar: #f6f7f8; /* Things --color-base-10 */
  --bg: #ffffff; /* --color-base-00 */
  --text: #222222; /* --color-base-100 */
  --text-muted: rgb(176, 178, 183);
  --frame-border: #ebedf0; /* sidebar ↔ main seam */
  --table-hover: #ebedf0;
  /* Things accent */
  --accent: hsl(215, 75%, 60%);
  --accent-hover: hsl(215, 75%, 50%);
  --pad-y: 1.5rem;
  --pad-x: 1rem;
  --pad-scale: 3;
  --gutter: 13.44rem; /* 8rem × 1.4 × 1.2 */
}

/* Things dark — sampled from app: sidebar / main */
@media (prefers-color-scheme: dark) {
  :root {
    --sidebar: rgb(41, 42, 45);
    --bg: rgb(45, 46, 49);
    --text: #dadada; /* --color-base-100 */
    --text-muted: hsl(212, 15%, 78%); /* Things dark muted */
    --frame-border: rgb(30, 31, 33);
    --table-hover: rgb(55, 56, 58);
    --accent: rgb(117, 169, 248);
    /* hover: same hue/sat, lightness +12% (Things dark) */
    --accent-hover: hsl(216, 91%, 84%);
  }
}

h1, h2, h3, h4, h5, h6,
small, big {
  font-size: 1em;
  font-weight: normal;
}

h1.post-title {
  font-weight: bold;
}

html {
  scrollbar-gutter: stable;
  min-height: 100%;
  box-sizing: border-box;
  background: var(--bg);
}

/*
  mobile:  {content}
  tablet:  {gray}|{bg}{content}{bg}
  desktop: {gray}|{bg}{content}{bg}|{gray}
  wider:   gray stays at viewport edges; bg grows; content stays 640 centered
*/
body {
  box-sizing: border-box;
  max-width: 640px;
  min-height: 100vh;
  margin: 0 auto;
  padding: calc(var(--pad-y) * var(--pad-scale)) var(--pad-x);
  /* SF / Segoe UI / system UI sans */
  font-family: system-ui, sans-serif;
  font-size: 1em;
  line-height: 1.4;
  color: var(--text);
  background: var(--bg);
}

/* tablet — gray on left edge only; restore wider content padding */
@media (min-width: 48rem) {
  html {
    border-left: var(--gutter) solid var(--sidebar);
    box-shadow: inset 1px 0 0 var(--frame-border);
  }

  body {
    padding-left: calc(var(--pad-x) * var(--pad-scale));
    padding-right: calc(var(--pad-x) * var(--pad-scale));
  }
}

/* desktop+ — gray on both viewport edges; bg fills toward centered content */
@media (min-width: 56rem) {
  html {
    border-right: var(--gutter) solid var(--sidebar);
    box-shadow:
      inset 1px 0 0 var(--frame-border),
      inset -1px 0 0 var(--frame-border);
  }
}

a {
  color: var(--accent);
}

a:hover {
  color: var(--accent-hover);
}

/* ISO dates in archive */
.archive-grid time {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

.post-date {
  margin-bottom: 1.5rem;
  color: var(--text-muted);
}

aside.referenced,
aside.related {
  margin-top: 1.5rem;
}

.archive-grid {
  width: 100%;
  max-width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  border: 1px solid var(--frame-border);
}

.archive-grid td {
  width: 50%;
  padding: 0.75rem;
  vertical-align: top;
  border: 1px solid var(--frame-border);
  overflow: hidden;
}

.archive-grid img,
.archive-grid video {
  max-width: 100%;
  height: auto;
  display: block;
}

.archive-grid td:hover {
  background: var(--table-hover);
}

/* View transitions — page crossfade + named morphs */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 0.2s;
}

/* Info / resume: Pandoc definition list → year | details */
dl.year-entry {
  display: grid;
  grid-template-columns: 4em 1fr;
  column-gap: 1rem;
  align-items: baseline;
}

dl.year-entry > dt {
  grid-column: 1;
  color: var(--text-muted);
  font-weight: normal;
}

dl.year-entry > dd {
  grid-column: 2;
  margin: 0;
}

/* Main focus-in — subtle blur + slight rise */
@keyframes focus-in {
  from {
    opacity: 0.85;
    filter: blur(3px);
    transform: translateY(-3px);
  }
  to {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
  }
}

body > main > *:not(br) {
  animation: focus-in 0.18s ease-out both;
}

@media (prefers-reduced-motion: reduce) {
  body > main > *:not(br) {
    animation: none;
  }
}