/* IssueOps site. Direction: a git-native ledger. Issue lifecycle palette
   (open green, review amber, merged purple), flat bordered panels, one
   signature accent: the branch rail that fills as the page scrolls. */
:root {
  color-scheme: dark;
  --bg: #0d0f12;
  --bg-2: #111419;
  --panel: #14181e;
  --panel-2: #191e25;
  --line: #262c35;
  --line-2: #333b46;
  --fg: #e6e9ee;
  --muted: #a1a9b4;
  --faint: #6e7781;
  --open: #3fb950;
  --review: #d29922;
  --info: #58a6ff;
  --merged: #a371f7;
  --danger: #f85149;
  --radius: 10px;
  --max: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Pretendard", "Noto Sans KR", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.045) 1px, transparent 0) 0 0 / 22px 22px,
    var(--bg);
  color: var(--fg);
  font: 16px/1.65 var(--font);
  -webkit-font-smoothing: antialiased;
}
/* Line breaking: break Korean between words only, on both pages (the English
   page shows Korean record titles). Headings balance their lines and body text
   avoids a one-word last line. Only paths and identifiers longer than the line
   break inside. */
body { word-break: keep-all; overflow-wrap: break-word; }
h1, h2, h3, h4 { text-wrap: balance; }
p, li, td, th, dd, .field span, .result a { text-wrap: pretty; }
a { color: inherit; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--info); outline-offset: 2px; border-radius: 6px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--fg); color: var(--bg); padding: 8px 12px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 8px; }
code, .mono { font-family: var(--mono); }
:not(pre) > code { font-size: 0.86em; background: rgba(255,255,255,0.06); padding: 0.1em 0.38em; border-radius: 5px; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 30; background: rgba(13,15,18,0.82); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 22px; height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 650; text-decoration: none; letter-spacing: -0.01em; }
.nav-links { margin-left: auto; display: flex; align-items: center; gap: 22px; font-size: 0.92rem; }
.nav-links a { text-decoration: none; color: var(--muted); }
.nav-links a:hover { color: var(--fg); }
.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 9px 16px; border-radius: 8px; border: 1px solid var(--line-2);
  background: var(--panel); color: var(--fg); text-decoration: none; font-weight: 550; font-size: 0.93rem;
  transition: border-color .15s, background .15s, transform .15s var(--ease);
}
.btn:hover { border-color: #4a5462; background: var(--panel-2); }
.btn:active { transform: translateY(1px); }
.btn.go { background: var(--open); border-color: var(--open); color: #04140a; }
.btn.go:hover { background: #46c758; }
.btn.small { padding: 6px 12px; font-size: 0.84rem; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

/* Hero */
.hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 520px); gap: 56px; align-items: center; padding: 84px 28px 40px; }
.kicker { display: inline-flex; align-items: center; gap: 10px; font: 0.82rem/1 var(--mono); color: var(--muted); border: 1px solid var(--line); background: var(--bg-2); padding: 7px 12px; border-radius: 999px; }
.kicker .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--open); box-shadow: 0 0 0 3px rgba(63,185,80,0.18); }
.hero h1 { font-size: clamp(2.3rem, 4.8vw, 3.9rem); line-height: 1.08; letter-spacing: -0.035em; font-weight: 700; margin: 22px 0 20px; }
.hero h1 .mark-open { color: var(--open); }
.hero h1 .mark-merged { color: var(--merged); }
.lede { color: var(--muted); font-size: 1.1rem; max-width: 560px; margin: 0 0 30px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hostline { margin: 34px 0 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 8px 10px; align-items: center; font-size: 0.88rem; color: var(--faint); }
.hostline li.chip { color: var(--muted); border: 1px solid var(--line); border-radius: 6px; padding: 3px 9px; font-family: var(--mono); font-size: 0.8rem; background: var(--bg-2); }

/* Panels */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.panel-head { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--line); font: 0.8rem/1.4 var(--mono); color: var(--muted); background: var(--bg-2); }
.panel-head .grow { flex: 1; }
.badge { font: 0.72rem/1 var(--mono); padding: 4px 8px; border-radius: 999px; border: 1px solid var(--line-2); color: var(--muted); white-space: nowrap; }
.badge.open { color: var(--open); border-color: rgba(63,185,80,0.45); }
.badge.review { color: var(--review); border-color: rgba(210,153,34,0.45); }
.badge.merged { color: var(--merged); border-color: rgba(163,113,247,0.45); }
.badge.danger { color: var(--danger); border-color: rgba(248,81,73,0.45); }
pre { margin: 0; padding: 16px 18px; overflow-x: auto; font: 0.83rem/1.7 var(--mono); color: #c9d1d9; }
.c-p { color: var(--open); } .c-f { color: var(--info); } .c-s { color: #a5d6ff; } .c-c { color: var(--faint); } .c-k { color: #7ee787; } .c-w { color: var(--review); }

/* Cycle explorer */
.cycle-body { display: grid; grid-template-columns: 228px minmax(0, 1fr); min-height: 380px; }
.stages { list-style: none; margin: 0; padding: 12px 0; border-right: 1px solid var(--line); position: relative; }
.stages::before { content: ""; position: absolute; left: 25px; top: 24px; bottom: 24px; width: 2px; background: var(--line-2); }
.stage-btn {
  position: relative; width: 100%; display: flex; align-items: center; gap: 12px; text-align: left;
  padding: 6px 12px 6px 18px; background: none; border: 0; cursor: pointer; color: var(--faint); font-size: 0.86rem; line-height: 1.3;
}
.stage-btn .node { position: relative; z-index: 1; flex: none; width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--line-2); background: var(--panel); transition: background .2s, border-color .2s, transform .2s var(--ease); }
.stage-btn.past { color: var(--muted); }
.stage-btn.past .node { border-color: var(--merged); background: var(--merged); }
.stage-btn[aria-selected="true"] { color: var(--fg); background: rgba(255,255,255,0.035); }
.stage-btn[aria-selected="true"] .node { border-color: var(--open); background: var(--bg); transform: scale(1.15); box-shadow: 0 0 0 4px rgba(63,185,80,0.18); }
.stage-btn .gate { margin-left: auto; font: 0.66rem/1 var(--mono); color: var(--review); }
.stage-detail { padding: 22px 22px 18px; display: flex; flex-direction: column; gap: 12px; }
.stage-detail .num { font: 0.78rem/1 var(--mono); color: var(--faint); }
.stage-detail h3 { margin: 0; font-size: 1.25rem; letter-spacing: -0.01em; }
.stage-detail p { margin: 0; color: var(--muted); font-size: 0.94rem; }
.skills { display: flex; flex-wrap: wrap; gap: 6px; }
.skills code { font-size: 0.78rem; }
.gate-note { border-left: 2px solid var(--review); padding: 6px 10px; font-size: 0.86rem; color: var(--muted); background: rgba(210,153,34,0.06); border-radius: 0 6px 6px 0; }
.stage-detail .term { margin-top: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); }
.stage-detail .term pre { padding: 10px 12px; font-size: 0.76rem; }
.cycle-foot { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-top: 1px solid var(--line); font-size: 0.8rem; color: var(--faint); }
.cycle-foot .bar { flex: 1; height: 3px; background: var(--line); border-radius: 3px; overflow: hidden; }
.cycle-foot .bar i { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, var(--open), var(--merged)); transform-origin: left; transform: scaleX(0); }
.cycle-foot button { background: none; border: 1px solid var(--line-2); border-radius: 6px; padding: 3px 9px; cursor: pointer; font-size: 0.78rem; color: var(--muted); }

/* Rail: the page's branch line */
.main { position: relative; }
.rail { position: absolute; left: calc(max(0px, (100% - var(--max)) / 2) + 18px); top: 0; bottom: 0; width: 2px; background: var(--line); pointer-events: none; }
.rail i { position: absolute; inset: 0; background: linear-gradient(180deg, var(--open), var(--info) 40%, var(--review) 65%, var(--merged)); transform-origin: top; transform: scaleY(var(--p, 0)); }
.sec { position: relative; padding-top: 120px; padding-left: 64px; }
@media (max-width: 980px) { .sec { padding-left: 28px; padding-top: 90px; } }
.sec-node { position: absolute; left: 11px; top: 117px; width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--line-2); background: var(--bg); transition: background .3s, border-color .3s, box-shadow .3s; }
.sec.on .sec-node { border-color: var(--c); background: var(--c); box-shadow: 0 0 0 5px color-mix(in srgb, var(--c) 22%, transparent); }
.sec[data-c="open"] { --c: var(--open); } .sec[data-c="info"] { --c: var(--info); } .sec[data-c="review"] { --c: var(--review); } .sec[data-c="merged"] { --c: var(--merged); } .sec[data-c="muted"] { --c: var(--muted); }
.eyebrow { font: 0.78rem/1 var(--mono); color: var(--c, var(--faint)); margin: 0 0 14px; display: flex; gap: 10px; align-items: center; }
.eyebrow b { font-weight: 400; color: var(--faint); }
.sec h2 { font-size: clamp(1.8rem, 3.3vw, 2.5rem); line-height: 1.15; letter-spacing: -0.025em; margin: 0 0 14px; font-weight: 680; }
.sec-lede { color: var(--muted); max-width: 640px; margin: 0 0 36px; }
.split { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 52px; align-items: start; }

/* Record viewer */
.tabs { display: flex; gap: 4px; }
.tab { background: none; border: 1px solid transparent; border-radius: 6px; padding: 4px 10px; cursor: pointer; color: var(--muted); font: 0.8rem/1.3 var(--mono); }
.tab[aria-selected="true"] { color: var(--fg); border-color: var(--line-2); background: var(--panel); }
.file { padding: 18px 20px; font-size: 0.88rem; display: grid; gap: 8px; }
.file h4 { margin: 0 0 6px; font-size: 1rem; line-height: 1.4; }
.field { display: grid; grid-template-columns: 110px minmax(0, 1fr); gap: 12px; padding: 8px 10px; border-radius: 8px; border: 1px solid transparent; color: var(--muted); transition: background .2s, border-color .2s, color .2s; }
.field b { font: 500 0.78rem/1.6 var(--mono); color: var(--faint); }
.field span { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.field.hi { background: rgba(63,185,80,0.07); border-color: rgba(63,185,80,0.35); color: var(--fg); }
.field.hi b { color: var(--open); }
.legend { list-style: none; padding: 0; margin: 0 0 28px; display: grid; gap: 8px; }
.legend button { width: 100%; text-align: left; display: grid; grid-template-columns: 110px 1fr; gap: 12px; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--line); background: var(--bg-2); cursor: pointer; }
.legend button b { font: 500 0.8rem/1.6 var(--mono); color: var(--open); }
.legend button span { color: var(--muted); font-size: 0.92rem; }
.legend button[aria-pressed="true"] { border-color: rgba(63,185,80,0.5); background: rgba(63,185,80,0.06); }
.filepath { font: 0.76rem/1.4 var(--mono); color: var(--faint); padding: 0 20px 16px; overflow-wrap: anywhere; }
.filepath a { color: var(--info); }

/* Route playground */
.play { display: grid; grid-template-columns: minmax(0, 1fr); }
.play-input { display: flex; gap: 10px; padding: 16px; border-bottom: 1px solid var(--line); align-items: center; }
.play-input label { font: 0.84rem/1 var(--mono); color: var(--open); white-space: nowrap; }
.play-input input { flex: 1; min-width: 0; background: var(--bg); border: 1px solid var(--line-2); border-radius: 8px; padding: 11px 13px; color: var(--fg); font: 0.95rem/1.3 var(--mono); }
.play-input input:focus { outline: none; border-color: var(--info); box-shadow: 0 0 0 3px rgba(88,166,255,0.2); }
.presets { display: flex; flex-wrap: wrap; gap: 8px; padding: 12px 16px; border-bottom: 1px solid var(--line); font-size: 0.82rem; color: var(--faint); align-items: center; }
.presets button { background: var(--bg-2); border: 1px solid var(--line); border-radius: 999px; padding: 4px 11px; cursor: pointer; color: var(--muted); font: 0.8rem/1.4 var(--mono); }
.presets button:hover { border-color: var(--line-2); color: var(--fg); }
.terms { padding: 10px 16px; border-bottom: 1px solid var(--line); font: 0.78rem/1.8 var(--mono); color: var(--faint); min-height: 42px; }
.term-pill { display: inline-block; padding: 0 7px; margin: 0 4px 0 0; border-radius: 5px; border: 1px solid var(--line-2); color: var(--muted); }
.term-pill.hit { color: var(--open); border-color: rgba(63,185,80,0.5); background: rgba(63,185,80,0.07); }
.results { list-style: none; margin: 0; padding: 6px 0; min-height: 210px; }
.result { display: grid; grid-template-columns: 28px minmax(0, 1fr) 120px; gap: 14px; align-items: start; padding: 12px 16px; border-bottom: 1px solid var(--line); animation: rise .35s var(--ease) both; }
.result:last-child { border-bottom: 0; }
.result .rank { font: 0.8rem/1.6 var(--mono); color: var(--faint); }
.result a { text-decoration: none; color: var(--fg); font-weight: 550; font-size: 0.93rem; line-height: 1.45; }
.result a:hover { color: var(--info); text-decoration: underline; }
.result .rel { font: 0.74rem/1.5 var(--mono); color: var(--faint); margin: 3px 0 6px; overflow-wrap: anywhere; }
.result .score { font: 0.74rem/1 var(--mono); color: var(--faint); text-align: right; }
.result .score i { display: block; height: 4px; margin-top: 7px; background: var(--line); border-radius: 4px; overflow: hidden; }
.result .score i::after { content: ""; display: block; height: 100%; width: var(--w); background: var(--open); }
.empty { padding: 26px 16px; color: var(--faint); font-size: 0.92rem; }
.play-foot { padding: 12px 16px; border-top: 1px solid var(--line); font-size: 0.8rem; color: var(--faint); background: var(--bg-2); }
@keyframes rise { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* Gate simulator */
.sim-state { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-bottom: 1px solid var(--line); }
.sim-state div { padding: 14px 16px; border-right: 1px solid var(--line); }
.sim-state div:last-child { border-right: 0; }
.sim-state small { display: block; font: 0.72rem/1.4 var(--mono); color: var(--faint); margin-bottom: 6px; }
.sim-actions { display: flex; flex-wrap: wrap; gap: 10px; padding: 16px; border-bottom: 1px solid var(--line); }
.sim-log { list-style: none; margin: 0; padding: 8px 0; min-height: 200px; max-height: 260px; overflow-y: auto; font: 0.8rem/1.55 var(--mono); }
.sim-log li { display: grid; grid-template-columns: 70px minmax(0, 1fr); gap: 10px; padding: 6px 16px; animation: rise .3s var(--ease) both; }
.sim-log li b { font-weight: 400; }
.sim-log li.ok b { color: var(--open); } .sim-log li.no b { color: var(--danger); } .sim-log li.warn b { color: var(--review); } .sim-log li.info b { color: var(--faint); }
.sim-log li span { color: var(--muted); }
.flash { animation: flash .5s var(--ease); }
@keyframes flash { 0% { background: rgba(248,81,73,0.18); } 100% { background: transparent; } }

/* Hosts */
.host-tabs { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.host-tabs .tab { font-size: 0.84rem; padding: 6px 12px; border-color: var(--line); }
.host-tabs .tab[aria-selected="true"] { border-color: var(--merged); color: var(--fg); background: rgba(163,113,247,0.08); }
.host-panel { padding: 18px 18px 6px; }
.host-panel dl { margin: 0; display: grid; grid-template-columns: 130px minmax(0, 1fr); gap: 10px 16px; font-size: 0.88rem; }
.host-panel dt { font: 0.78rem/1.6 var(--mono); color: var(--faint); }
.host-panel dd { margin: 0; color: var(--muted); overflow-wrap: anywhere; }
.flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 8px; padding: 16px 18px 20px; font-size: 0.8rem; }
.flow > div { border: 1px solid var(--line); border-radius: 8px; padding: 10px; text-align: center; background: var(--bg-2); color: var(--muted); }
.flow > div strong { display: block; color: var(--fg); font: 0.8rem/1.4 var(--mono); }
.flow > span { color: var(--faint); font-family: var(--mono); }
.flow .active { border-color: var(--merged); }

/* Compare */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; min-width: 660px; }
th, td { padding: 13px 16px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
thead th { font-weight: 550; color: var(--muted); font-size: 0.84rem; background: var(--bg-2); }
tbody th { font-weight: 500; color: var(--faint); font-size: 0.88rem; }
tbody tr:last-child > * { border-bottom: 0; }
tbody tr:hover > * { background: rgba(255,255,255,0.02); }
.us { color: var(--fg); border-left: 2px solid var(--open); }
thead th.us { color: var(--open); }

/* Quick start */
.code { position: relative; }
.copy-btn { position: absolute; top: 8px; right: 8px; }
.note { color: var(--faint); font-size: 0.9rem; margin-top: 16px; max-width: 760px; }
.note a { color: var(--info); }

/* Footer */
footer { margin-top: 140px; border-top: 1px solid var(--line); background: var(--bg-2); }
.merge-line { display: flex; align-items: center; gap: 12px; padding: 22px 0; font: 0.84rem/1.4 var(--mono); color: var(--muted); border-bottom: 1px solid var(--line); }
.merge-line .m { width: 16px; height: 16px; border-radius: 50%; background: var(--merged); box-shadow: 0 0 0 5px rgba(163,113,247,0.18); flex: none; }
.foot { display: grid; grid-template-columns: 1fr auto auto; gap: 56px; padding: 36px 0; }
.foot p { margin: 10px 0 0; color: var(--faint); font-size: 0.9rem; max-width: 340px; }
.foot h3 { font: 0.76rem/1 var(--mono); color: var(--faint); margin: 0 0 14px; }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; font-size: 0.92rem; }
.foot ul a { text-decoration: none; color: var(--muted); }
.foot ul a:hover { color: var(--fg); }
.legal { display: flex; justify-content: space-between; gap: 16px; padding: 0 0 28px; font-size: 0.8rem; color: var(--faint); }
.legal a { color: var(--faint); }

/* Reveal (JS adds .js; content stays visible without JS) */
.js .reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .hero { grid-template-columns: minmax(0, 1fr); padding-top: 56px; }
  .split { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .rail, .sec-node { display: none; }
  .nav-links a.hide-sm { display: none; }
  .foot { grid-template-columns: 1fr 1fr; }
  .foot > div:first-child { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .wrap, .hero { padding-left: 18px; padding-right: 18px; }
  .cycle-body { grid-template-columns: minmax(0, 1fr); }
  .stages { display: flex; overflow-x: auto; padding: 10px 8px; border-right: 0; border-bottom: 1px solid var(--line); }
  .stages::before { display: none; }
  .stage-btn { flex: none; width: auto; flex-direction: column; gap: 6px; padding: 6px 8px; font-size: 0.72rem; }
  .stage-btn .label, .stage-btn .gate { display: none; }
  .result { grid-template-columns: 22px minmax(0, 1fr); }
  .result .score { grid-column: 2; text-align: left; }
  .sim-state { grid-template-columns: minmax(0, 1fr); }
  .sim-state div { border-right: 0; border-bottom: 1px solid var(--line); }
  .field, .legend button, .host-panel dl { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .flow { grid-template-columns: minmax(0, 1fr); }
  .flow > span { text-align: center; transform: rotate(90deg); }
  .legal { flex-direction: column; }
  .play-input { flex-wrap: wrap; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}