/* RSKIP Explorer: styles. Colours follow the Rootstock brand system (Published palette = light, Editor palette = dark). */
@font-face { font-family: 'Rootstock Sans Headline'; src: url('fonts/Rootstock-Sans-Headline.woff2') format('woff2'); font-display: swap; }
@font-face { font-family: 'Rootstock Sans Body'; src: url('fonts/Rootstock-Sans-Body.woff2') format('woff2'); font-display: swap; }
@font-face { font-family: 'Rootstock Sans Tags'; src: url('fonts/Rootstock-Sans-Tags.woff2') format('woff2'); font-display: swap; }

/* Light = Rootstock "Published" palette (off-white ground). */
:root {
  color-scheme: light;
  --orange: #FF9100; --pink: #FF71E1; --green: #79C600;
  --bg: #FAF9F5; --surface: #F0EEE7; --field: #FFFFFF; --line: #DAD8D0; --line-strong: #000000;
  --text: #000000; --muted: #5C5B55; --on-accent: #000000;
  --link: #000000; --link-underline: #FF9100; --focus: #000000;
  --mark-bg: #000000; --mark-text: #FAF9F5;
  --t-draft: #FF9100; --t-accepted: #FF71E1; --t-adopted: #79C600;
  --t-testnet-bg: transparent; --t-testnet-border: #79C600; --t-testnet-text: #000000;
  --display: 'Rootstock Sans Headline', 'Helvetica Neue', Arial, sans-serif;
  --body: 'Rootstock Sans Body', 'Helvetica Neue', Arial, sans-serif;
  --tag: 'Rootstock Sans Tags', 'Helvetica Neue', Arial, sans-serif;
}
/* Dark = Rootstock "Editor" palette (black ground; cyan allowed here only). Opt-in via the theme button. */
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #000000; --surface: #121211; --field: #1B1B1A; --line: #2C2C2A; --line-strong: #FAF9F5;
  --text: #FAF9F5; --muted: #A5A49D;
  --link: #FF9100; --link-underline: #FF9100; --focus: #FF9100;
  --mark-bg: #FAF9F5; --mark-text: #000000;
  --t-testnet-bg: #08FFD0; --t-testnet-border: #08FFD0; --t-testnet-text: #000000;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 16px/1.5 var(--body); min-height: 100vh; }
a { color: var(--link); text-decoration: underline; text-decoration-color: var(--link-underline); text-decoration-thickness: 2px; text-underline-offset: 3px; }
a:hover { color: var(--orange); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 28px 20px 64px; }

.topbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 64px; }
.logo { height: 32px; margin-left: -4px; /* brand minimum 32px; offsets the mark's built-in side bearing */ width: auto; color: var(--orange); display: block; }
.theme-btn { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: var(--text); border: 1.5px solid var(--line-strong); border-radius: 999px; height: 36px; padding: 0 16px; font: 13px var(--tag); text-transform: uppercase; letter-spacing: .04em; cursor: pointer; }
.theme-btn:hover { background: var(--text); color: var(--bg); }
.theme-btn svg { width: 14px; height: 14px; }

/* Hero: one left edge, spacing on an 8px scale, type set to the brand's tracking and leading. */
.hero { max-width: 760px; }
.hero .eyebrow { margin: 0; font: 15px/1 var(--tag); text-transform: uppercase; letter-spacing: .04em; }
.hero .eyebrow mark { display: inline-block; background: var(--mark-bg); color: var(--mark-text); padding: 5px 8px 4px; }
/* Brand headline: leading 110%, tracking -25. margin-left pulls the R's side bearing onto the text edge. */
.hero h1 { font: 400 clamp(44px, 7.2vw, 80px)/1.1 var(--display); letter-spacing: -.025em; word-spacing: -.12em; margin: 24px 0 0 -.075em; }
/* Brand text box: box height 110% of type size, 10% inner spacing, square corners. */
.hero h1 span { display: inline-block; background: var(--orange); color: #000; line-height: 1.1; padding: 0 .1em; margin-left: .02em; }
/* Brand body copy is black or off-white, never grey. */
.hero .lede { margin: 24px 0 0; font-size: 19px; line-height: 1.45; letter-spacing: -.01em; color: var(--text); max-width: 34em; text-wrap: pretty; }
/* Brand CTA: pill outline plus an offset second stroke. Gap above equals CTA height (brand rule). */
.ctas { display: flex; flex-wrap: wrap; gap: 12px 14px; margin-top: 28px; }
.cta { display: inline-flex; align-items: center; height: 40px; padding: 0 18px; border: 1.5px solid var(--text); border-radius: 999px; color: var(--text); background: var(--bg); text-decoration: none; font: 15px var(--body); letter-spacing: -.01em; box-shadow: 3px 3px 0 -1.5px var(--bg), 3px 3px 0 0 var(--text); transition: transform .12s, box-shadow .12s; }
.cta::after { content: "↗"; margin-left: 8px; font-size: .9em; }
.cta:hover { color: var(--text); transform: translate(1.5px, 1.5px); box-shadow: 1.5px 1.5px 0 -1.5px var(--bg), 1.5px 1.5px 0 0 var(--text); }
.meta-left { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 6px 18px; }
.source { display: inline-flex; align-items: center; gap: 7px; }
.source a { color: inherit; text-decoration-color: currentColor; text-decoration-thickness: 1px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted); flex: none; }
.dot.live { background: var(--green); }
.dot.loading { background: var(--orange); animation: pulse 1s infinite alternate; }
@keyframes pulse { to { opacity: .3; } }
@media (prefers-reduced-motion: reduce) { .dot.loading { animation: none; } }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 32px 0 20px; }
.stat { background: var(--surface); border: 2px solid transparent; border-radius: 14px; padding: 14px 16px 12px; cursor: pointer; text-align: left; color: inherit; font: inherit; transition: border-color .15s; }
.stat:hover { border-color: var(--line); }
.stat.on { border-color: var(--orange); }
.stat b { display: block; font: 400 36px/1.05 var(--display); font-variant-numeric: tabular-nums; }
.stat small { font: 13px var(--tag); color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.search { flex: 1 1 280px; }
.search input { width: 100%; }
input, select { background: var(--field); color: var(--text); border: 1.5px solid var(--line); border-radius: 999px; padding: 9px 16px; font: 15px var(--body); outline: none; }
input:focus, select:focus { border-color: var(--orange); }
select { cursor: pointer; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; min-height: 27px; } /* reserved so rows don't jump when chips render */
.chip { border: 1.5px solid var(--line); background: transparent; color: var(--muted); border-radius: 999px; padding: 4px 12px; font: 13px var(--tag); text-transform: uppercase; letter-spacing: .03em; cursor: pointer; display: inline-flex; gap: 6px; align-items: center; }
.chip:hover { border-color: var(--muted); color: var(--text); }
.chip .n { font-variant-numeric: tabular-nums; }
.chip.on { color: var(--text); border-color: var(--line-strong); }
.chip.on[data-tone="draft"] { background: var(--t-draft); border-color: var(--t-draft); color: var(--on-accent); }
.chip.on[data-tone="accepted"] { background: var(--t-accepted); border-color: var(--t-accepted); color: var(--on-accent); }
.chip.on[data-tone="adopted"] { background: var(--t-adopted); border-color: var(--t-adopted); color: var(--on-accent); }
.chip.on[data-tone="testnet"] { background: var(--t-testnet-bg); border-color: var(--t-testnet-border); color: var(--t-testnet-text); }
.chip.on[data-tone="closed"] { background: var(--text); border-color: var(--text); color: var(--bg); }
.btn-link { background: none; border: 0; color: var(--muted); font: 13px var(--tag); text-transform: uppercase; letter-spacing: .03em; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; padding: 4px; }
.btn-link:hover { color: var(--text); }

.meta-row { display: flex; justify-content: space-between; align-items: center; margin: 22px 0 6px; font: 13px var(--tag); text-transform: uppercase; letter-spacing: .03em; color: var(--muted); gap: 10px; flex-wrap: wrap; }

table { width: 100%; border-collapse: collapse; }
thead th { text-align: left; font: 13px var(--tag); text-transform: uppercase; letter-spacing: .04em; color: var(--muted); padding: 10px; border-bottom: 1.5px solid var(--line-strong); cursor: pointer; user-select: none; white-space: nowrap; }
thead th:hover { color: var(--text); }
thead th.sorted { color: var(--text); }
thead th .arr { display: inline-block; width: 1em; color: var(--orange); }
tbody tr.row { cursor: pointer; border-bottom: 1px solid var(--line); }
tbody tr.row:hover { background: var(--surface); }
tbody td { padding: 13px 10px; vertical-align: top; font-size: 15px; }
td.num { font: 15px var(--tag); white-space: nowrap; }
td.title { font: 17px/1.3 var(--display); }
td.title .authors { display: block; font: 13px var(--body); color: var(--muted); margin-top: 4px; }
td.date { font: 14px var(--tag); color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.badge { display: inline-block; font: 12px var(--tag); text-transform: uppercase; letter-spacing: .03em; padding: 3px 10px; border-radius: 999px; border: 1.5px solid var(--line); color: var(--muted); white-space: nowrap; }
.badge[data-tone="draft"] { background: var(--t-draft); border-color: var(--t-draft); color: var(--on-accent); }
.badge[data-tone="accepted"] { background: var(--t-accepted); border-color: var(--t-accepted); color: var(--on-accent); }
.badge[data-tone="adopted"] { background: var(--t-adopted); border-color: var(--t-adopted); color: var(--on-accent); }
.badge[data-tone="testnet"] { background: var(--t-testnet-bg); border-color: var(--t-testnet-border); color: var(--t-testnet-text); }
.tag { display: inline-block; font: 12px var(--tag); text-transform: uppercase; letter-spacing: .03em; color: var(--text); border: 1.5px solid var(--line); border-radius: 999px; padding: 1px 8px; margin: 0 4px 4px 0; }
.cxbar { display: inline-flex; gap: 3px; vertical-align: middle; }
.cxbar i { width: 8px; height: 14px; border-radius: 2px; background: var(--line); }
.cxbar i.f { background: var(--orange); }
tr.detail td { background: var(--surface); padding: 6px 18px 20px; border-bottom: 1px solid var(--line); }
tr.detail p { line-height: 1.6; margin: 10px 0 14px; max-width: 72ch; }
tr.detail a { font: 14px var(--tag); text-transform: uppercase; letter-spacing: .03em; }
.empty, .error { text-align: center; color: var(--muted); padding: 48px 12px; }
footer { margin-top: 44px; padding-top: 18px; border-top: 1.5px solid var(--line-strong); color: var(--muted); font-size: 13px; line-height: 1.7; display: grid; gap: 10px; }
.legend { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 16px; font: 13px var(--tag); text-transform: uppercase; letter-spacing: .03em; }
footer p { margin: 0; max-width: 72ch; }

[hidden] { display: none !important; }
.tabs { display: flex; gap: 6px; margin: 56px 0 0; border-bottom: 1.5px solid var(--line-strong); flex-wrap: wrap; }
.tab { background: transparent; border: 0; border-radius: 10px 10px 0 0; padding: 10px 16px; font: 14px var(--tag); text-transform: uppercase; letter-spacing: .04em; color: var(--muted); cursor: pointer; }
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] { background: var(--mark-bg); color: var(--mark-text); }

.guide { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 48px; margin-top: 32px; }
.toc { position: sticky; top: calc(env(safe-area-inset-top, 0px) + 20px); align-self: start; display: grid; gap: 2px; }
.toc-h { font: 13px var(--tag); text-transform: uppercase; letter-spacing: .04em; color: var(--muted); margin-bottom: 8px; }
.toc a { display: block; text-decoration: none; border-left: 2px solid var(--line); padding: 5px 0 5px 12px; font: 14px var(--body); color: var(--muted); }
.toc a:hover, .toc a.on { color: var(--text); border-left-color: var(--orange); }
.guide-body { max-width: 760px; display: grid; gap: 44px; }
.guide > *, .guide-body > section { min-width: 0; }
.guide-body > section { scroll-margin-top: 24px; }
.guide-lede { font-size: 18px; margin: 0; }
.guide h2 { font: 400 30px/1.1 var(--display); margin: 0 0 14px; letter-spacing: -.01em; }
.guide h3 { font: 400 19px/1.2 var(--display); margin: 22px 0 10px; }
.guide p { margin: 0 0 12px; max-width: 70ch; }
.guide .note { color: var(--muted); font-size: 14px; }
.guide code { font: 14px ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--surface); padding: 1px 5px; border-radius: 4px; }

.diagram { background: var(--surface); border-radius: 14px; padding: 18px; margin: 16px 0 6px; overflow-x: auto; }
.diagram svg { display: block; width: 100%; min-width: 620px; height: auto; }
.d-edges path { fill: none; stroke: var(--text); stroke-width: 2; }
.d-edges path.dash { stroke-dasharray: 6 5; }
.d-head { fill: var(--text); }
.n rect { fill: var(--bg); stroke: var(--line-strong); stroke-width: 1.5; }
.n text { fill: var(--text); font: 15px var(--tag); text-transform: uppercase; letter-spacing: .03em; text-anchor: middle; }
.n.draft rect { fill: var(--t-draft); stroke: var(--t-draft); }
.n.accepted rect { fill: var(--t-accepted); stroke: var(--t-accepted); }
.n.adopted rect { fill: var(--t-adopted); stroke: var(--t-adopted); }
.n.draft text, .n.accepted text, .n.adopted text { fill: var(--on-accent); }
.n.end rect { stroke-dasharray: 4 4; }

.defs { margin: 0; display: grid; gap: 0; border-top: 1px solid var(--line); }
.defs > div { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.defs.wide > div { grid-template-columns: 190px minmax(0, 1fr); }
.defs dt { font: 16px/1.4 var(--display); }
.defs dd { margin: 0; }
.steps { margin: 0 0 16px; padding: 0; list-style: none; counter-reset: s; display: grid; gap: 14px; }
.steps li { counter-increment: s; position: relative; padding-left: 46px; min-height: 30px; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: -3px; width: 30px; height: 30px; border-radius: 50%; background: var(--mark-bg); color: var(--mark-text); font: 14px/30px var(--tag); text-align: center; }
.steps strong { font-family: var(--display); font-weight: 400; }
.label-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.label-grid > div { background: var(--surface); border-radius: 14px; padding: 16px 18px; }
.label-grid h3 { margin-top: 0; }
.label-grid p { font-size: 14px; color: var(--muted); }
.kv { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; font-size: 15px; }
.kv li { display: flex; align-items: center; gap: 10px; }
.kv .tag { margin: 0; min-width: 52px; text-align: center; }
.table-wrap { overflow-x: auto; margin: 4px 0 12px; }
table.fields { border-top: 1px solid var(--line); }
table.fields th { text-align: left; font: 16px var(--display); padding: 10px 16px 10px 0; border-bottom: 1px solid var(--line); white-space: nowrap; vertical-align: top; }
table.fields td { padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.editors { list-style: none; margin: 0 0 16px; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.editors a { display: inline-block; border: 1.5px solid var(--line); border-radius: 999px; padding: 6px 14px; text-decoration: none; font-size: 15px; }
.editors a:hover { border-color: var(--orange); color: var(--text); }

@media (max-width: 900px) {
  .guide { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .toc { position: static; grid-auto-flow: column; grid-auto-columns: max-content; overflow-x: auto; gap: 6px; padding-bottom: 4px; }
  .toc-h { display: none; }
  .toc button { border: 1.5px solid var(--line); border-radius: 999px; padding: 5px 12px; font-size: 13px; }
  .label-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 560px) {
  .defs > div, .defs.wide > div { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .guide h2 { font-size: 26px; }
}

@media (max-width: 760px) {
  .wrap { padding: 20px 16px 48px; }
  .topbar { margin-bottom: 40px; }
  .logo { height: 28px; }
  .theme-btn { height: 34px; padding: 0 12px; }
  .hero h1 { margin-top: 18px; }
  .hero .lede { margin-top: 18px; font-size: 17px; }
  .ctas { margin-top: 22px; }
  .cta { height: 38px; padding: 0 14px; font-size: 14px; }
  .tabs { margin-top: 40px; }
  .stats { grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .stat { padding: 12px; }
  .stat b { font-size: 30px; }
  .list thead { display: none; }
  table.list, .list tbody, .list tr, .list td { display: block; width: 100%; }
  tbody tr.row { padding: 12px 0; display: grid; grid-template-columns: auto 1fr auto; gap: 6px 10px; align-items: center; }
  .list tbody td { padding: 0; }
  td.num { grid-row: 1; grid-column: 1; }
  td.date { grid-row: 1; grid-column: 2; }
  td.status { grid-row: 1; grid-column: 3; }
  td.title { grid-row: 2; grid-column: 1 / -1; }
  td.purpose { grid-row: 3; grid-column: 1 / -1; }
  td.cx { display: none; }
  .controls select { flex: 1 1 45%; }
}

/* ---- Accessibility and interaction helpers -------------------------------- */
.sr-only { position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.legend a { display: inline-block; padding-block: 4px; min-height: 24px; }
.sort-btn { all: unset; cursor: pointer; display: inline-flex; align-items: center; gap: 2px; border-radius: 4px; }
.sort-btn:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
thead th[aria-sort] { color: var(--text); }
.row-toggle { all: unset; cursor: pointer; display: block; font: 17px/1.3 var(--display); border-radius: 4px; }
.row-toggle:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
.row-toggle::after { content: ""; position: absolute; inset: 0; } /* whole row is the click target */
tbody tr.row { position: relative; }
tbody tr.row[aria-expanded="true"], tbody tr.row:has(.row-toggle[aria-expanded="true"]) { background: var(--surface); }
.rows-wrap { min-height: 70vh; } /* reserves space while data loads, so nothing jumps */
.skip { position: absolute; left: 16px; top: -100px; background: var(--mark-bg); color: var(--mark-text); padding: 8px 14px; border-radius: 999px; z-index: 10; text-decoration: none; }
.skip:focus { top: 12px; }
kbd { font: 12px var(--tag); border: 1.5px solid var(--line); border-radius: 5px; padding: 0 5px; color: var(--muted); }
.noscript { background: var(--surface); border-radius: 14px; padding: 14px 18px; margin-top: 20px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; } }
.logo-link { display: inline-block; text-decoration: none; border-radius: 4px; }

@media (max-width: 760px) { .chips { min-height: 60px; } }
@media (max-width: 480px) { .chips { min-height: 93px; } }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
.th-short { display: none; }
@media (max-width: 1100px) { .th-long { display: none; } .th-short { display: inline; } }
@media (prefers-reduced-motion: reduce) { .cta { transition: none; } }