/* Link pages (docs/phase01.md 7.5). Colors come only from the account's tokens.css
   (copied next to this file); tokens are tuned for the 1080px slide canvas, so radius is scaled. */

@font-face {
  font-family: "Pretendard";
  src: url("fonts/PretendardVariable.woff2") format("woff2");
  font-weight: 45 920;
  font-display: swap;
}

:root {
  --r: calc(var(--radius) / 2.5);
  --r-sm: calc(var(--radius) / 4);
  --gutter: 16px;
  --tap: 48px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Malgun Gothic", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  word-break: keep-all;
  overflow-wrap: anywhere;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }

a { color: var(--c-accent); text-underline-offset: 3px; }

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

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  padding: 10px 14px;
  background: var(--c-surface);
  color: var(--c-ink);
  border-radius: var(--r-sm);
  z-index: 10;
}
.skip:focus { top: 8px; }

/* --- disclosure: first thing on every page (7.6) ------------------------------------------ */

.disc {
  background: var(--c-badge-bg);
  color: var(--c-badge-ink);
  padding: 12px var(--gutter);
  font-size: 0.875rem;
  line-height: 1.55;
  font-weight: 600;
}
.disc p + p { margin-top: 4px; }
.disc p { max-width: 560px; margin-inline: auto; }

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

.wrap {
  max-width: 592px;
  margin: 0 auto;
  padding: 0 var(--gutter) 40px;
}

.top { padding: 28px 0 20px; }
.kicker {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-chip-ink);
  background: var(--c-chip-bg);
  padding: 3px 10px;
  border-radius: 999px;
}
h1 {
  margin-top: 10px;
  font-size: 1.75rem;
  line-height: 1.3;
  font-weight: var(--w-title);
  letter-spacing: -0.02em;
}
.angle { margin-top: 6px; color: var(--c-ink-sub); font-size: 0.9375rem; }

main { display: grid; gap: 16px; }
main:focus { outline: none; }

h2 {
  font-size: 1.125rem;
  font-weight: var(--w-title);
  letter-spacing: -0.01em;
}
.h-sub { font-size: 0.875rem; font-weight: 500; color: var(--c-ink-sub); margin-left: 4px; }
.h-small { font-size: 0.9375rem; }

.panel {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  padding: 18px 16px;
  display: grid;
  gap: 12px;
}

.hint { color: var(--c-ink-sub); font-size: 0.875rem; }
.status { font-size: 0.875rem; font-weight: 600; min-height: 0; }
.status:empty { display: none; }
.empty { color: var(--c-ink-sub); }

/* --- inputs ------------------------------------------------------------------------------------- */

.field, .find { display: grid; gap: 6px; }
label { font-weight: 700; font-size: 0.9375rem; }
input {
  font: inherit;
  font-size: 1rem; /* >= 16px: no iOS zoom on focus */
  min-height: var(--tap);
  width: 100%;
  padding: 10px 14px;
  color: var(--c-ink);
  background: var(--c-bg);
  border: 2px solid var(--c-line);
  border-radius: var(--r-sm);
}
input:focus-visible { border-color: var(--c-accent); outline-offset: 1px; }
input::placeholder { color: var(--c-ink-sub); opacity: 1; }
.find-row { display: flex; gap: 8px; }
.find-row input { flex: 1; font-variant-numeric: tabular-nums; }
button {
  font: inherit;
  font-weight: 700;
  min-height: var(--tap);
  min-width: 72px;
  padding: 0 18px;
  color: var(--c-on-accent);
  background: var(--c-accent);
  border: 0;
  border-radius: var(--r-sm);
  cursor: pointer;
}

/* --- posts ------------------------------------------------------------------------------------- */

.posts { display: grid; gap: 10px; }
.post {
  border-top: 1px solid var(--c-line);
  padding-top: 10px;
  display: grid;
  gap: 6px;
}
.posts > .post:first-child { border-top: 0; padding-top: 0; }
.post[hidden] { display: none; }
.post-link {
  display: grid;
  gap: 2px;
  min-height: var(--tap);
  align-content: center;
  color: var(--c-ink);
  text-decoration: none;
}
.post-series { font-size: 0.8125rem; font-weight: 700; color: var(--c-accent); }
.post-title { font-weight: 700; text-decoration: underline; text-decoration-color: var(--c-line); text-underline-offset: 4px; }
.post-link:hover .post-title { text-decoration-color: currentColor; }
.post-nums { display: flex; flex-wrap: wrap; gap: 6px; }
.post-nums--plain { color: var(--c-ink-sub); font-size: 0.875rem; font-variant-numeric: var(--num); }
.num-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  min-height: 36px;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--c-chip-bg);
  color: var(--c-chip-ink);
  font-size: 0.875rem;
  font-weight: 700;
  font-variant-numeric: var(--num);
  text-decoration: none;
}
.num-name { font-weight: 500; }

.older { border-top: 1px solid var(--c-line); padding-top: 8px; }
.older > summary {
  min-height: var(--tap);
  display: flex;
  align-items: center;
  font-weight: 700;
  color: var(--c-accent);
  cursor: pointer;
}
.older > .posts { margin-top: 6px; }

/* --- items ---------------------------------------------------------------------------------- */

.list { display: grid; gap: 12px; }
.list > h2 { margin: 8px 0 0; }

.item {
  background: var(--c-surface);
  border: 1px solid var(--c-line);
  border-radius: var(--r);
  padding: 16px;
  display: grid;
  gap: 10px;
  scroll-margin-top: 16px;
}
.item:target, .item:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--c-accent);
}
.item-head { display: flex; gap: 12px; align-items: flex-start; }
.num {
  flex: none;
  min-width: 3.25em;
  padding: 4px 8px;
  text-align: center;
  border-radius: var(--r-sm);
  background: var(--c-accent);
  color: var(--c-on-accent);
  font-weight: 800;
  font-variant-numeric: var(--num);
}
.item-title { display: grid; gap: 2px; padding-top: 2px; }
.item-name { font-size: 1.0625rem; line-height: 1.4; font-weight: var(--w-title); }
.item-sub { font-size: 0.8125rem; color: var(--c-ink-sub); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--c-chip-bg);
  color: var(--c-chip-ink);
  font-size: 0.8125rem;
  font-weight: 700;
}
.chip--hint { background: transparent; border: 1px solid var(--c-line); color: var(--c-ink-sub); font-weight: 600; }

.facts { display: grid; gap: 2px; font-size: 0.9375rem; }
.facts li::before { content: "· "; color: var(--c-ink-sub); }
.note, .caution { font-size: 0.875rem; color: var(--c-ink-sub); }
.checked { font-size: 0.8125rem; color: var(--c-ink-sub); font-variant-numeric: var(--num); }

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: var(--tap);
  padding: 10px 16px;
  border-radius: var(--r-sm);
  background: var(--c-accent);
  color: var(--c-on-accent);
  font-weight: 800;
  text-decoration: none;
}
.btn:hover { filter: brightness(1.05); }
.ic { width: 1.125em; height: 1.125em; flex: none; }

.item--ended { background: transparent; border-style: dashed; }
.ended { font-weight: 700; color: var(--c-warn); }
.ended a { color: var(--c-accent); }

.back { font-weight: 700; }
.back a { display: inline-flex; align-items: center; min-height: var(--tap); }

/* --- footer ----------------------------------------------------------------------------------- */

.foot {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
  display: grid;
  gap: 14px;
  font-size: 0.875rem;
  color: var(--c-ink-sub);
}
.buy {
  background: var(--c-surface);
  border-radius: var(--r);
  padding: 14px 16px;
  color: var(--c-ink);
  display: grid;
  gap: 6px;
}
.foot-notes { display: grid; gap: 4px; }
.legal { display: flex; flex-wrap: wrap; gap: 4px 16px; }
.legal a { display: inline-flex; align-items: center; min-height: 44px; color: var(--c-ink-sub); }

@media (min-width: 600px) {
  h1 { font-size: 2rem; }
  .top { padding-top: 40px; }
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}