/* Rotorloop site — "Field Manual with live samples". Tokens first; a re-skin should mostly touch this block. */
:root {
  --ink: #12161C;
  --ink-2: #3A414C;
  --muted: #545D6B;
  --rule: #D5D9E0;
  --rule-2: #E6E9EE;
  --paper: #F4F5F7;
  --white: #FFFFFF;
  --blue: #2457D6;
  --blue-dark: #1A3FA0;
  --blue-tint: #E7EEFC;
  --cool: #4C8DFF;
  --warm: #FF7A3D;
  --ok: #1F6B3F; --ok-bg: #E3F1E8;
  --next: #8A5A00; --next-bg: #FFF1D1;
  --plan: #3A414C; --plan-bg: #EEF0F3;
  --r: 4px;
  --max: 1160px;
  --read: 68ch;
  --head: 'Space Grotesk', 'Segoe UI', system-ui, sans-serif;
  --body: Inter, 'Segoe UI', system-ui, sans-serif;
  --mono: 'IBM Plex Mono', Consolas, ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.6 var(--body); }
img, svg { max-width: 100%; }
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: var(--blue-dark); }
:focus-visible { outline: 3px solid #9DB8F5; outline-offset: 2px; }
h1, h2, h3 { font-family: var(--head); font-weight: 600; line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(34px, 5vw, 52px); }
h2 { font-size: clamp(26px, 3.2vw, 34px); }
h3 { font-size: 19px; }
p { margin: 0 0 1em; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; background: var(--white); padding: 8px 12px; z-index: 10; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
.site-head { background: var(--white); border-bottom: 1px solid var(--rule); position: sticky; top: 0; z-index: 5; }
.site-head .wrap { display: flex; align-items: center; gap: 24px; min-height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font: 600 22px/1 var(--head); letter-spacing: -0.02em; }
.brand svg { width: 28px; height: 28px; flex: none; }
.nav { display: flex; align-items: center; gap: 22px; margin-left: auto; }
.nav a { color: var(--ink-2); text-decoration: none; font-weight: 500; font-size: 15px; padding: 10px 0; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); text-decoration: underline; text-decoration-thickness: 2px; }
.menu-btn { display: none; margin-left: auto; min-height: 44px; padding: 0 14px; border: 1px solid var(--rule); background: var(--white); border-radius: var(--r); font: 500 15px var(--body); color: var(--ink); }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 18px; border-radius: var(--r); font: 600 15px var(--body); text-decoration: none; border: 1px solid var(--blue); background: var(--blue); color: var(--white); cursor: pointer; }
.btn:hover { background: var(--blue-dark); border-color: var(--blue-dark); color: var(--white); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn.ghost:hover { background: var(--ink); color: var(--white); }
.nav .btn { padding: 0 14px; min-height: 40px; color: var(--white); text-decoration: none; }

/* ---------- document structure ---------- */
.label { font: 500 12px/1.4 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.section { border-top: 1px solid var(--rule); padding: 64px 0; }
.section.white { background: var(--white); }
.sec-head { display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 24px; margin-bottom: 32px; }
.sec-head .label { padding-top: 10px; }
.sec-head p { color: var(--ink-2); max-width: var(--read); }
.lede { font-size: 19px; color: var(--ink-2); max-width: 58ch; }
.prose { max-width: var(--read); }
.prose h2 { margin-top: 1.6em; }
.prose h3 { margin-top: 1.4em; }
.prose ul { padding-left: 1.2em; }
.prose li { margin-bottom: .4em; }

/* ---------- hero ---------- */
.hero { padding: 56px 0 64px; }
.hero .wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 520px); gap: 48px; align-items: center; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }
.hero .status-line { margin-top: 20px; font-size: 14px; color: var(--muted); }

/* ---------- product sample (real UI pieces) ---------- */
.sample { background: var(--white); border: 1px solid var(--rule); border-radius: 6px; box-shadow: 0 1px 0 var(--rule), 0 12px 28px rgba(18, 22, 28, .08); overflow: hidden; }
.sample-bar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 14px; background: var(--ink); color: #fff; font-size: 13px; }
.sample-bar .live { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 12px; color: #9FE0B5; }
.sample-bar .live::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.sample-body { display: grid; grid-template-columns: minmax(0, 1fr) 210px; }
.rooms { list-style: none; margin: 0; padding: 0; border-right: 1px solid var(--rule-2); }
.rooms li { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--rule-2); font-size: 14px; }
.rooms li:last-child { border-bottom: 0; }
.rooms small { display: block; color: var(--muted); font-size: 12px; }
.t { font: 600 16px/1 var(--head); padding: 6px 8px; border-radius: 3px; min-width: 54px; text-align: center; border: 1px solid transparent; }
.t.vc { background: #2F5FC4; color: #fff; } .t.c { background: #7FA3EC; color: #0B2A6B; } .t.bc { background: #D3E0FA; }
.t.ok { background: #fff; border-color: var(--rule); } .t.bw { background: #FCE1CC; } .t.w { background: #F4A675; color: #3B1505; } .t.vh { background: #B8401A; color: #fff; }
.dial-box { background: var(--ink); color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 14px 10px; gap: 6px; }
.dial { position: relative; width: 170px; height: 164px; }
.dial svg { width: 170px; height: 170px; display: block; touch-action: none; cursor: grab; }
.dial-txt { position: absolute; inset: 46px 0 auto; text-align: center; pointer-events: none; }
.dial-txt .verb { font: 600 10px var(--mono); letter-spacing: .12em; color: #9AA3B2; }
.dial-txt .big { font: 600 42px/1 var(--head); }
.dial-txt .now { font-size: 12px; color: #C9CED6; }
.dial-hint { font-size: 12px; color: #9AA3B2; }
.sample-note { font-size: 12px; color: var(--muted); margin-top: 8px; }
.scale { display: flex; height: 10px; border-radius: 2px; overflow: hidden; border: 1px solid var(--rule); max-width: 420px; }
.scale span { flex: 1; }
.scale-labels { display: flex; justify-content: space-between; max-width: 420px; font-size: 12px; color: var(--muted); margin-top: 4px; }

/* ---------- flow diagram ---------- */
.flow { display: grid; grid-template-columns: repeat(5, minmax(0, auto)); align-items: stretch; gap: 0; }
.node { background: var(--white); border: 1px solid var(--ink); border-radius: var(--r); padding: 18px; min-width: 0; }
.node .label { display: block; margin-bottom: 6px; }
.node h3 { margin-bottom: 6px; }
.node p { font-size: 14px; color: var(--ink-2); margin: 0; }
.node ul { margin: 8px 0 0; padding-left: 1.1em; font-size: 14px; color: var(--ink-2); }
.link { display: flex; flex-direction: column; justify-content: center; align-items: center; padding: 0 10px; min-width: 96px; font: 500 11px/1.3 var(--mono); color: var(--muted); text-align: center; }
.link::before { content: ''; display: block; width: 100%; height: 0; border-top: 2px solid var(--ink); margin-bottom: 8px; }
.site-box { border-style: dashed; }

/* ---------- spec tables ---------- */
.spec { width: 100%; border-collapse: collapse; background: var(--white); border: 1px solid var(--rule); font-size: 15px; }
.spec caption { text-align: left; padding-bottom: 10px; }
.spec th, .spec td { text-align: left; vertical-align: top; padding: 12px 14px; border-bottom: 1px solid var(--rule-2); }
.spec thead th { font: 500 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); background: var(--paper); border-bottom: 1px solid var(--rule); }
.spec tbody th { font-weight: 600; width: 32%; }
.table-box { overflow-x: auto; }
.tag { display: inline-block; font: 600 12px/1 var(--mono); letter-spacing: .04em; padding: 5px 7px; border-radius: 2px; border: 1px solid; white-space: nowrap; }
.tag.now { color: var(--ok); background: var(--ok-bg); border-color: #B7DCC4; }
.tag.next { color: var(--next); background: var(--next-bg); border-color: #F0D58F; }
.tag.plan { color: var(--plan); background: var(--plan-bg); border-color: var(--rule); }

/* ---------- numbered list of rules ---------- */
.rules { list-style: none; margin: 0; padding: 0; counter-reset: r; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--rule); }
.rules li { counter-increment: r; padding: 20px 24px 20px 0; border-bottom: 1px solid var(--rule); display: grid; grid-template-columns: 44px minmax(0, 1fr); gap: 4px 12px; align-content: start; }
.rules li:nth-child(odd) { border-right: 1px solid var(--rule); }
.rules li:nth-child(even) { padding-left: 24px; }
.rules li::before { content: counter(r, decimal-leading-zero); font: 500 13px var(--mono); color: var(--blue); padding-top: 3px; grid-row: span 2; }
.rules strong { font-family: var(--head); font-size: 17px; font-weight: 600; }
.rules span { color: var(--ink-2); font-size: 15px; }

/* ---------- callout / CTA band ---------- */
.band { background: var(--ink); color: #fff; padding: 48px 0; }
.band .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; }
.band h2 { margin: 0; }
.band p { margin: 6px 0 0; color: #C9CED6; }
.band .btn.ghost { color: #fff; border-color: #fff; }
.band .btn.ghost:hover { background: #fff; color: var(--ink); }

.draft { border: 1px solid #F0D58F; background: var(--next-bg); color: var(--next); padding: 12px 14px; border-radius: var(--r); font-size: 14px; margin-bottom: 24px; }
.ph { background: #FFF1D1; padding: 0 3px; font-family: var(--mono); font-size: .92em; }

/* ---------- form ---------- */
.form { background: var(--white); border: 1px solid var(--rule); border-radius: 6px; padding: 24px; display: grid; gap: 16px; max-width: 640px; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 600; font-size: 15px; }
.field .hint { font-size: 13px; color: var(--muted); }
.field input, .field select, .field textarea { font: 16px var(--body); min-height: 46px; padding: 10px 12px; border: 1px solid #9AA3B2; border-radius: var(--r); background: #fff; color: var(--ink); width: 100%; }
.field textarea { min-height: 110px; resize: vertical; }
.field input[aria-invalid="true"], .field select[aria-invalid="true"] { border-color: #B42318; }
.field .err { color: #B42318; font-size: 13px; min-height: 0; }
.row2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink-2); }
.check input { width: 20px; height: 20px; margin-top: 2px; flex: none; }
.form-status { border-radius: var(--r); padding: 12px 14px; font-size: 15px; }
.form-status.ok { background: var(--ok-bg); color: var(--ok); border: 1px solid #B7DCC4; }
.form-status.bad { background: #FDE7E5; color: #B42318; border: 1px solid #F5C2BD; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---------- footer ---------- */
.site-foot { border-top: 1px solid var(--rule); background: var(--white); padding: 32px 0 28px; font-size: 14px; color: var(--muted); }
.site-foot .top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--rule-2); }
.site-foot nav { display: flex; flex-wrap: wrap; gap: 6px 20px; }
.site-foot nav a { color: var(--ink-2); text-decoration: none; }
.site-foot nav a:hover { text-decoration: underline; }
.site-foot .bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; padding-top: 16px; }
.site-foot .credit a { color: var(--ink-2); }

/* ---------- 404 ---------- */
.notfound { padding: 96px 0; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }
  .link { flex-direction: row; min-height: 52px; padding: 0; gap: 10px; }
  .link::before { width: 0; height: 28px; border-top: 0; border-left: 2px solid var(--ink); margin: 0; }
}
@media (max-width: 820px) {
  .nav { display: none; position: absolute; left: 0; right: 0; top: 64px; background: var(--white); border-bottom: 1px solid var(--rule); flex-direction: column; align-items: stretch; gap: 0; padding: 8px 20px 16px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--rule-2); }
  .nav .btn { margin-top: 12px; }
  .menu-btn { display: inline-flex; align-items: center; }
  .sec-head { grid-template-columns: 1fr; gap: 4px; }
  .sec-head .label { padding-top: 0; }
  .rules { grid-template-columns: 1fr; }
  .rules li:nth-child(odd) { border-right: 0; }
  .rules li:nth-child(even) { padding-left: 0; }
  .row2 { grid-template-columns: 1fr; }
  .section { padding: 48px 0; }
}
@media (max-width: 560px) {
  .sample-body { grid-template-columns: 1fr; }
  .rooms { border-right: 0; border-bottom: 1px solid var(--rule-2); }
  .spec thead { display: none; }
  .spec, .spec tbody, .spec tr, .spec th, .spec td { display: block; width: 100%; }
  .spec tr { border-bottom: 1px solid var(--rule); padding: 8px 0; }
  .spec th, .spec td { border: 0; padding: 4px 14px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; scroll-behavior: auto !important; } }

/* ---------- docs ---------- */
.docs { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 48px; padding-top: 40px; padding-bottom: 72px; align-items: start; }
.toc { position: sticky; top: 88px; font-size: 15px; }
.toc summary { display: none; }
.toc .label { margin: 18px 0 6px; }
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc li a, .toc-home a { display: block; padding: 5px 0 5px 12px; border-left: 2px solid var(--rule); color: var(--ink-2); text-decoration: none; }
.toc-home { margin: 0; }
.toc a:hover { color: var(--ink); border-left-color: var(--ink-2); }
.toc a[aria-current="page"] { color: var(--ink); font-weight: 600; border-left-color: var(--blue); }
.doc { min-width: 0; }
.doc > .label a { color: var(--muted); }
.doc h1 { font-size: clamp(32px, 4vw, 44px); }
.doc .rules { margin: 8px 0 24px; }
.doc .rules li { margin: 0; }
.doc pre { background: var(--ink); color: #E6E9EE; padding: 16px 18px; border-radius: var(--r); overflow-x: auto; font: 13px/1.6 var(--mono); }
.doc code { font: .9em var(--mono); }
.doc :not(pre) > code { background: var(--rule-2); padding: 1px 5px; border-radius: 3px; }
.doc .table-box { margin: 8px 0 20px; }
.doc .spec tbody th { width: 30%; }
.note { border-left: 3px solid #F0D58F; background: var(--next-bg); padding: 10px 14px; font-size: 15px; color: var(--ink-2); }
.reviewed { font-size: 13px; color: var(--muted); margin-top: 40px; border-top: 1px solid var(--rule); padding-top: 12px; }
.pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 16px; }
.pager a { display: block; flex: 1; max-width: 48%; border: 1px solid var(--rule); background: var(--white); border-radius: var(--r); padding: 12px 14px; text-decoration: none; color: var(--ink); font-weight: 600; }
.pager a:hover { border-color: var(--ink); }
.pager a .label { display: block; }
.pager .nx { text-align: right; margin-left: auto; }
.doc-index { display: grid; gap: 8px; margin-top: 24px; }
.doc-index section { border-top: 1px solid var(--rule); padding-top: 8px; }
.doc-index ul { list-style: none; margin: 0 0 16px; padding: 0; }
.doc-index li { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--rule-2); }
.doc-index li a { font-weight: 600; }
.doc-index li span { color: var(--ink-2); font-size: 15px; }

/* ---------- integrations matrix ---------- */
.tag.gw { color: var(--blue-dark); background: var(--blue-tint); border-color: #BFD0F5; }
.legend { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 24px; margin-top: 24px; max-width: 860px; font-size: 14px; color: var(--ink-2); }
.legend p { margin: 0; display: flex; gap: 10px; align-items: baseline; }
.legend .tag { flex: none; min-width: 132px; text-align: center; }
.filter { max-width: 420px; margin-top: 28px; }
[data-matrix] tr[hidden] { display: none; }

@media (max-width: 820px) {
  .docs { grid-template-columns: 1fr; gap: 16px; padding-top: 20px; }
  .toc { position: static; border: 1px solid var(--rule); border-radius: var(--r); background: var(--white); padding: 0 14px; }
  .toc summary { display: block; cursor: pointer; padding: 12px 0; font-weight: 600; min-height: 44px; }
  .toc nav { padding-bottom: 12px; }
  .doc-index li { grid-template-columns: 1fr; gap: 2px; }
  .legend { grid-template-columns: 1fr; }
  .pager { flex-direction: column; }
  .pager a { max-width: none; }
  .pager .nx { text-align: left; margin-left: 0; }
}