/* MuseFeed — warm ivory paper, muted blue navigation, and slate ink. */

:root {
  --paper: #f3efe6;
  --paper-raised: #faf7f0;
  --ink: #24364a;
  --ink-2: #506174;
  --ink-3: #697788;
  --rule: #c7cdd3;
  --rule-soft: #dce0e3;
  --accent: #42658a;
  --accent-soft: #dfe8f0;
  --adopted: #42658a;
  --adopted-soft: #dfe8f0;
  --doing: #806b40;
  --doing-soft: #ece3cf;

  --serif: "Literata", "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Atkinson Hyperlegible", "Segoe UI", system-ui, -apple-system, sans-serif;

  --step--1: 0.8125rem;  /* 13 */
  --step-0: 0.9375rem;   /* 15 */
  --step-1: 1.0625rem;   /* 17 */
  --step-2: 1.3125rem;   /* 21 */
  --step-3: 1.75rem;     /* 28 */
  --step-4: 2.25rem;     /* 36 */

  --rail: 232px;
  --measure: 44rem;

  color-scheme: light dark;
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #18232f;
    --paper-raised: #213040;
    --ink: #eee9de;
    --ink-2: #c0c9d2;
    --ink-3: #9aa9b8;
    --rule: #405063;
    --rule-soft: #2e3d4e;
    --accent: #9bb8d3;
    --accent-soft: #2b4056;
    --adopted: #9bb8d3;
    --adopted-soft: #2b4056;
    --doing: #d1bd91;
    --doing-soft: #403b30;
  }
}

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

html { scroll-padding-top: env(safe-area-inset-top, 0px); }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: var(--step-1);
  line-height: 1.6;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

.skip {
  position: absolute; left: 1rem; top: -3rem; z-index: 10;
  background: var(--ink); color: var(--paper); padding: 0.5rem 0.9rem;
  font-family: var(--sans); font-size: var(--step-0); border-radius: 4px;
}
.skip:focus { top: 1rem; }

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

.shell { display: grid; grid-template-columns: var(--rail) minmax(0, 1fr); min-height: 100vh; }

.rail {
  position: sticky; top: 0; height: 100vh;
  display: flex; flex-direction: column; gap: 2rem;
  padding: 2rem 1.25rem 1.5rem 1.75rem;
  background: var(--accent-soft);
  border-right: 1px solid var(--rule);
  font-family: var(--sans);
}

.brand {
  display: flex; align-items: center; gap: 0.6rem;
  color: var(--ink); text-decoration: none;
  font-family: var(--serif); font-weight: 700; font-size: var(--step-2); line-height: 1.2;
}
.brand-mark { display: grid; grid-template-columns: repeat(2, 7px); gap: 2px; flex: none; }
.brand-mark i { width: 7px; height: 7px; background: var(--ink); }
.brand-mark i:last-child { background: var(--accent); }

.nav { display: flex; flex-direction: column; gap: 0.15rem; }
.nav a {
  color: var(--ink-2); text-decoration: none;
  font-size: var(--step-0); padding: 0.4rem 0.6rem; margin-left: -0.6rem; border-radius: 4px;
}
.nav a:hover { color: var(--ink); background: var(--rule-soft); }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 700; background: var(--paper-raised); box-shadow: inset 3px 0 0 var(--accent); }

.rail-foot { margin-top: auto; font-size: var(--step--1); color: var(--ink-3); }
.rail-foot p { margin: 0.25rem 0; }
.adopted strong { font-family: var(--serif); font-size: var(--step-3); color: var(--adopted); font-weight: 600; margin-right: 0.15rem; }
.adopted { color: var(--ink-2); }

.main { padding: 3rem clamp(1.25rem, 5vw, 4.5rem) 6rem; min-width: 0; }
.main:focus { outline: none; }
.page { max-width: var(--measure); }

/* The one motion moment: a short e-ink style refresh when the page changes. */
.main.refresh { animation: eink-refresh 240ms steps(3, jump-none); }
@keyframes eink-refresh {
  0% { filter: invert(1) grayscale(1); }
  45% { filter: invert(1) grayscale(1); }
  100% { filter: none; }
}
@media (prefers-reduced-motion: reduce) { .main.refresh { animation: none; } }

/* ---------------------------------------------------------------- page header */

.page-head { margin-bottom: 2.5rem; }
.page-title { font-size: var(--step-4); line-height: 1.1; font-weight: 700; margin: 0 0 0.75rem; letter-spacing: -0.01em; }
.page-intro { color: var(--ink-2); margin: 0.5rem 0 0; max-width: 38rem; }

.date-nav { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; font-family: var(--sans); font-size: var(--step-0); }
.date-nav .step {
  display: inline-flex; align-items: center; justify-content: center;
  width: 2.1rem; height: 2.1rem; border: 1px solid var(--rule); border-radius: 4px;
  color: var(--ink); text-decoration: none; background: var(--paper-raised);
}
.date-nav .step:hover { border-color: var(--ink-3); }
.date-nav .step[aria-disabled="true"] { color: var(--ink-3); opacity: 0.45; pointer-events: none; }
.date-nav select {
  font: inherit; color: var(--ink); background: var(--paper-raised);
  border: 1px solid var(--rule); border-radius: 4px; padding: 0.35rem 0.5rem; height: 2.1rem;
}

.notice {
  font-family: var(--sans); font-size: var(--step-0); color: var(--ink-2);
  border-left: 3px solid var(--doing); background: var(--doing-soft);
  padding: 0.7rem 0.9rem; margin: 1.5rem 0; border-radius: 0 4px 4px 0;
}
.notice.info { border-left-color: var(--accent); background: var(--accent-soft); }

.empty { border: 1px dashed var(--rule); border-radius: 6px; padding: 1.5rem; color: var(--ink-2); font-family: var(--sans); font-size: var(--step-0); }
.empty h2 { font-family: var(--serif); color: var(--ink); font-size: var(--step-2); margin: 0 0 0.4rem; }
.empty p { margin: 0.4rem 0; }
.loading { color: var(--ink-3); font-family: var(--sans); }

/* ---------------------------------------------------------------- topics */

.topics { list-style: none; margin: 0; padding: 0; }

.topic {
  display: grid; grid-template-columns: 3rem minmax(0, 1fr); column-gap: 0.5rem;
  padding: 2.25rem 0; border-top: 1px solid var(--rule);
}
.topic:first-child { border-top: 0; padding-top: 0.5rem; }

.rank { font-family: var(--serif); font-size: var(--step-3); line-height: 1.15; color: var(--ink-3); font-variant-numeric: lining-nums; }

.topic-title { font-size: var(--step-3); line-height: 1.2; font-weight: 600; margin: 0 0 0.6rem; letter-spacing: -0.005em; }

.topic-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 0.4rem 0.9rem; font-family: var(--sans); font-size: var(--step--1); color: var(--ink-2); margin-bottom: 1rem; }

.heat { display: inline-flex; align-items: center; gap: 0.5rem; }
.pixels { display: inline-grid; grid-auto-flow: column; gap: 2px; }
.pixels i { width: 9px; height: 9px; background: var(--ink); }
.pixels i.faint { background: var(--rule); }

.tag { border: 1px solid var(--rule); border-radius: 3px; padding: 0.05rem 0.4rem; color: var(--ink-2); }
.tag.rising { border-color: var(--accent); color: var(--accent); }

.summary { margin: 0 0 0.75rem; }
.why { margin: 0 0 1.25rem; color: var(--ink-2); }
.why b { color: var(--ink); font-weight: 600; }

.block-title { font-family: var(--sans); font-size: var(--step-0); font-weight: 700; color: var(--ink); margin: 1.5rem 0 0.6rem; }

.angles { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.75rem; }
.angles li { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); gap: 0.75rem; align-items: baseline; }
.cov { font-family: var(--sans); font-size: var(--step--1); color: var(--ink-3); }
.cov.rare { color: var(--accent); font-weight: 700; }
.angle { margin: 0; }
.angle-why { display: block; color: var(--ink-3); font-size: var(--step-0); line-height: 1.5; margin-top: 0.15rem; }

.plans { margin-top: 1.25rem; border-top: 1px solid var(--rule-soft); }
.plans details { border-bottom: 1px solid var(--rule-soft); }
.plans summary {
  cursor: pointer; list-style: none; padding: 0.7rem 0;
  font-family: var(--sans); font-size: var(--step-0); font-weight: 700; color: var(--ink);
  display: flex; align-items: center; gap: 0.35rem;
}
.plans summary::-webkit-details-marker { display: none; }
.plans summary::after { content: "+"; margin-left: auto; font-weight: 400; color: var(--ink-3); font-size: 1.2rem; line-height: 1; }
.plans details[open] summary::after { content: "−"; }
.plans summary .count { color: var(--ink-3); font-weight: 400; }
.plan-body { padding: 0 0 1.1rem; }
.plan-body h4 { font-family: var(--sans); font-size: var(--step--1); color: var(--ink-3); font-weight: 400; margin: 0.9rem 0 0.3rem; }
.plan-body h4:first-child { margin-top: 0; }
.plan-body ul, .plan-body ol { margin: 0; padding-left: 1.3rem; }
.plan-body li { margin: 0.2rem 0; }
.plan-body blockquote { margin: 0; padding-left: 0.9rem; border-left: 2px solid var(--ink); font-style: italic; }

.sources, .plan-body .sources { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.sources a { font-size: var(--step-0); line-height: 1.45; }
.src-meta { display: block; font-family: var(--sans); font-size: var(--step--1); color: var(--ink-3); }

/* status buttons */
.status { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 0.75rem; margin-top: 1.25rem; font-family: var(--sans); font-size: var(--step--1); }
.st {
  font: inherit; font-size: var(--step-0); cursor: pointer;
  color: var(--ink); background: var(--paper-raised);
  border: 1px solid var(--rule); border-radius: 4px; padding: 0.4rem 0.8rem;
}
.st:hover { border-color: var(--ink-3); }
.st[aria-pressed="true"].doing { background: var(--doing-soft); border-color: var(--doing); color: var(--ink); }
.st[aria-pressed="true"].adopted { background: var(--adopted-soft); border-color: var(--adopted); color: var(--ink); }
.st:disabled { cursor: not-allowed; opacity: 0.5; }
.st-note { color: var(--ink-3); }
.st-error { color: var(--doing); }

/* ---------------------------------------------------------------- calendar */

.section-title { font-size: var(--step-2); font-weight: 600; margin: 3rem 0 1rem; }
.section-title:first-child { margin-top: 0; }

.moment { padding: 1.5rem 0; border-top: 1px solid var(--rule); }
.moment:first-of-type { border-top: 0; padding-top: 0; }
.moment h3 { font-size: var(--step-2); font-weight: 600; line-height: 1.25; margin: 0 0 0.35rem; }
.moment-when { font-family: var(--sans); font-size: var(--step-0); color: var(--ink-2); margin: 0 0 0.9rem; }
.moment-when b { color: var(--accent); }
.ideas { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.ideas li p { margin: 0; }
.idea-title { font-weight: 600; }
.idea-angle { color: var(--ink-2); font-size: var(--step-0); }
.idea-format { font-family: var(--sans); font-size: var(--step--1); color: var(--ink-3); margin-left: 0.4rem; font-weight: 400; }
.evergreen { font-family: var(--sans); font-size: var(--step--1); color: var(--ink-3); margin: 0.9rem 0 0; }

.year { list-style: none; margin: 0; padding: 0; font-family: var(--sans); font-size: var(--step-0); }
.year li { display: grid; grid-template-columns: 8.5rem minmax(0, 1fr) auto; gap: 1rem; padding: 0.55rem 0; border-top: 1px solid var(--rule-soft); align-items: baseline; }
.year .when { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.year .name { color: var(--ink); }
.year .opens { color: var(--ink-3); font-size: var(--step--1); text-align: right; }

/* ---------------------------------------------------------------- competitors */

.brand-block { padding: 2rem 0; border-top: 1px solid var(--rule); }
.brand-block:first-of-type { border-top: 0; padding-top: 0; }
.brand-block h2 { font-size: var(--step-3); font-weight: 600; margin: 0; line-height: 1.2; }
.products { font-family: var(--sans); font-size: var(--step--1); color: var(--ink-3); margin: 0.3rem 0 0; }
.facts { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.8rem; }
.facts p { margin: 0; }
.fact-title { font-weight: 600; }
.fact-detail { color: var(--ink-2); font-size: var(--step-0); }
.fact-refs { font-family: var(--sans); font-size: var(--step--1); color: var(--ink-3); }
.muted { color: var(--ink-3); font-family: var(--sans); font-size: var(--step-0); margin: 0; }

/* ---------------------------------------------------------------- status page */

.kv { display: grid; grid-template-columns: 10rem minmax(0, 1fr); gap: 0.45rem 1rem; font-family: var(--sans); font-size: var(--step-0); margin: 0; }
.kv dt { color: var(--ink-3); }
.kv dd { margin: 0; }

.table-wrap { overflow-x: auto; margin: 0 0 1rem; }
table { border-collapse: collapse; width: 100%; font-family: var(--sans); font-size: var(--step--1); }
th, td { text-align: left; padding: 0.5rem 0.75rem 0.5rem 0; border-bottom: 1px solid var(--rule-soft); vertical-align: top; }
th { color: var(--ink-3); font-weight: 400; }
td.num { font-variant-numeric: tabular-nums; }
.badge { display: inline-block; padding: 0.05rem 0.45rem; border-radius: 3px; border: 1px solid var(--rule); white-space: nowrap; }
.badge.ok { color: var(--adopted); border-color: var(--adopted); }
.badge.error { color: var(--doing); border-color: var(--doing); background: var(--doing-soft); }
.badge.partial, .badge.skipped { color: var(--doing); border-color: var(--doing); }
.badge.quiet { color: var(--ink-3); }
.msg { color: var(--ink-3); max-width: 28rem; }

.warnings { margin: 0; padding-left: 1.2rem; font-family: var(--sans); font-size: var(--step-0); }
.warnings li { margin: 0.3rem 0; }

/* ---------------------------------------------------------------- small screens */

@media (max-width: 860px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .rail {
    position: sticky; top: 0; z-index: 5; height: auto;
    flex-direction: row; align-items: center; flex-wrap: wrap; gap: 0.5rem 1.25rem;
    padding: 0.8rem 1.25rem; border-right: 0; border-bottom: 1px solid var(--rule);
    background: var(--accent-soft);
    padding-top: calc(0.8rem + env(safe-area-inset-top, 0px));
  }
  .nav { flex-direction: row; overflow-x: auto; gap: 0.25rem; width: 100%; order: 3; scrollbar-width: none; }
  .nav a { margin-left: 0; white-space: nowrap; }
  .nav a[aria-current="page"] { box-shadow: inset 0 -2px 0 var(--accent); }
  .rail-foot { margin: 0 0 0 auto; }
  .rail-foot .updated { display: none; }
  .adopted strong { font-size: var(--step-1); }
  .main { padding-top: 2rem; }
  .page-title { font-size: var(--step-3); }
  .topic { grid-template-columns: minmax(0, 1fr); }
  .rank { font-size: var(--step-1); margin-bottom: 0.2rem; }
  .topic-title { font-size: var(--step-2); }
  .angles li { grid-template-columns: minmax(0, 1fr); gap: 0.15rem; }
  .year li { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; }
  .year .opens { text-align: left; }
  .kv { grid-template-columns: minmax(0, 1fr); gap: 0.1rem; }
  .kv dd { margin-bottom: 0.6rem; }
}

/* ---------------------------------------------------------------- utilities */

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
code { font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: 0.85em; background: var(--rule-soft); padding: 0.05rem 0.3rem; border-radius: 3px; }