/* Engineering HA Assure — drawing-sheet design.
   Tokens: ink #1B2A3A, paper #F7F8F6, drafting blue #1F5FAD, signal amber #E0A100,
   rule #C9D1D9, fail red #B42318, pass green #1E7B4A. No inline styles anywhere (strict CSP). */
:root {
  --ink: #1B2A3A; --ink-2: #44546A; --paper: #F7F8F6; --sheet: #FFFFFF; --blue: #1F5FAD; --blue-soft: #E6EEF8;
  --amber: #E0A100; --amber-soft: #FFF4D6; --rule: #C9D1D9; --rule-2: #E3E8EC; --red: #B42318; --red-soft: #FDECEA;
  --green: #1E7B4A; --green-soft: #E5F4EC;
  --sans: "Segoe UI", "Helvetica Neue", Arial, system-ui, sans-serif;
  --num: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --r: 3px;
}
* { box-sizing: border-box; }
html { font-size: 15px; }
body { margin: 0; font-family: var(--sans); color: var(--ink); background: var(--paper); line-height: 1.5; -webkit-font-smoothing: antialiased; }
a { color: var(--blue); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5rem; font-weight: 650; letter-spacing: -.01em; }
h1 { font-size: 1.7rem; } h2 { font-size: 1.25rem; } h3 { font-size: 1.05rem; }
p { margin: 0 0 .8rem; max-width: 75ch; }
code { font-size: .85em; word-break: break-all; }
.muted { color: var(--ink-2); }
.small { font-size: .87rem; }
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 62ch; }
.hidden { display: none !important; }
.num { font-variant-numeric: tabular-nums; text-align: right; }

/* ---------- Buttons and forms ---------- */
.btn { display: inline-flex; align-items: center; gap: .4rem; border: 1px solid var(--rule); background: var(--sheet); color: var(--ink);
  padding: .45rem .9rem; border-radius: var(--r); font: inherit; font-size: .93rem; cursor: pointer; text-decoration: none; min-height: 2.25rem; }
.btn:hover { border-color: var(--ink-2); }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, .cell:focus-visible { outline: 2px solid var(--amber); outline-offset: 1px; }
.btn-primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn-primary:hover { background: #174B8A; border-color: #174B8A; }
.btn-danger { color: var(--red); border-color: #E7B7B2; }
.btn-small { padding: .2rem .55rem; min-height: 1.8rem; font-size: .85rem; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.btn-row { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; margin: .6rem 0; }
label { display: block; font-size: .88rem; font-weight: 600; margin: .7rem 0 .25rem; }
input, select, textarea { width: 100%; font: inherit; color: var(--ink); background: var(--sheet); border: 1px solid var(--rule);
  border-radius: var(--r); padding: .45rem .6rem; }
textarea { min-height: 6rem; resize: vertical; }
input[type=checkbox], input[type=radio] { width: auto; margin-right: .4rem; }
.check { display: flex; align-items: flex-start; gap: .3rem; font-weight: 400; }
.hint { font-size: .83rem; color: var(--ink-2); margin-top: .2rem; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0 1rem; }
.form-grid .wide { grid-column: 1 / -1; }
fieldset { border: 1px solid var(--rule); border-radius: var(--r); padding: .6rem .9rem; margin: .8rem 0; }
legend { font-weight: 600; font-size: .9rem; padding: 0 .3rem; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: .2rem .8rem; }

/* ---------- Messages ---------- */
.banner { border-left: 4px solid var(--amber); background: var(--amber-soft); padding: .6rem .9rem; margin: 0 0 1rem; border-radius: 0 var(--r) var(--r) 0; }
.banner.bad { border-color: var(--red); background: var(--red-soft); }
.banner.good { border-color: var(--green); background: var(--green-soft); }
.banner.info { border-color: var(--blue); background: var(--blue-soft); }
.toast { position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%); background: var(--ink); color: #fff; padding: .6rem 1rem;
  border-radius: var(--r); z-index: 60; max-width: 90vw; box-shadow: 0 4px 18px rgba(27,42,58,.25); }
.toast.bad { background: var(--red); }
.linkbox { display: flex; gap: .5rem; align-items: stretch; margin: .5rem 0; }
.linkbox input { font-size: .85rem; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: var(--r); background: var(--sheet); margin: .6rem 0 1.2rem; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; }
th, td { border-bottom: 1px solid var(--rule-2); padding: .45rem .6rem; text-align: left; vertical-align: top; }
thead th { background: #EEF2F5; font-weight: 600; font-size: .85rem; border-bottom: 1px solid var(--rule); position: sticky; top: 0; z-index: 1; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: #FAFBFC; }
td.actions { white-space: nowrap; text-align: right; }

/* Mapping matrices */
.matrix th.rot { writing-mode: vertical-rl; transform: rotate(180deg); white-space: nowrap; font-weight: 600; padding: .5rem .3rem; min-width: 2.2rem; }
.matrix td.cellwrap { padding: 0; text-align: center; border-left: 1px solid var(--rule-2); }
.cell { width: 100%; min-width: 2.2rem; height: 2.2rem; border: 0; background: transparent; font: inherit; font-weight: 700; cursor: pointer; color: var(--ink); }
.cell[disabled] { cursor: default; }
.cell.s1, .cell.lvI { background: #EAF1FA; } .cell.s2, .cell.lvD { background: #B9CFEA; } .cell.s3, .cell.lvA { background: var(--blue); color: #fff; }
.legend { display: flex; gap: 1rem; flex-wrap: wrap; font-size: .85rem; color: var(--ink-2); margin: .3rem 0; }
.legend span::before { content: ""; display: inline-block; width: .9rem; height: .9rem; vertical-align: -2px; margin-right: .3rem; border: 1px solid var(--rule); }
.legend .k1::before { background: #EAF1FA; } .legend .k2::before { background: #B9CFEA; } .legend .k3::before { background: var(--blue); }

/* Status marks */
.tag { display: inline-block; padding: .05rem .45rem; border-radius: 2px; font-size: .8rem; font-weight: 600; border: 1px solid var(--rule); background: #F2F4F6; white-space: nowrap; }
.tag.good { background: var(--green-soft); color: var(--green); border-color: #B8DDC8; }
.tag.bad { background: var(--red-soft); color: var(--red); border-color: #F0C2BD; }
.tag.warn { background: var(--amber-soft); color: #7A5700; border-color: #F0D78E; }
.tag.blue { background: var(--blue-soft); color: var(--blue); border-color: #BFD3EC; }
.bar { position: relative; height: .6rem; background: var(--rule-2); border-radius: 1px; min-width: 120px; overflow: hidden; }
.bar > i { position: absolute; inset: 0 auto 0 0; background: var(--green); }
.bar.low > i { background: var(--red); } .bar.mid > i { background: var(--amber); }
.bar > b { position: absolute; top: -2px; bottom: -2px; width: 2px; background: var(--ink); }

/* ---------- Public site ---------- */
.site { display: flex; flex-direction: column; min-height: 100vh; }
.site-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .8rem 1.5rem; border-bottom: 1px solid var(--rule); background: var(--sheet); flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: .55rem; text-decoration: none; color: var(--ink); font-weight: 700; letter-spacing: -.01em; }
.site-nav { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; font-size: .93rem; }
.site-nav a:not(.btn) { color: var(--ink); text-decoration: none; }
.site-nav a[aria-current] { color: var(--blue); text-decoration: underline; text-underline-offset: 4px; }
.site-main { width: min(1040px, 100% - 2.5rem); margin: 2.5rem auto; flex: 1; }
.site-foot { border-top: 1px solid var(--rule); padding: 1.2rem 1.5rem; font-size: .88rem; background: var(--sheet); }
.hero { border-left: 6px solid var(--amber); padding: .5rem 0 .5rem 1.5rem; margin-bottom: 3rem; }
.hero h1 { font-size: clamp(2rem, 4.5vw, 3.1rem); max-width: 20ch; letter-spacing: -.02em; }
.cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 2rem; border-top: 1px solid var(--ink); padding-top: 1.2rem; margin-bottom: 3rem; }
.steps { counter-reset: s; list-style: none; padding: 0; max-width: 78ch; }
.steps li { counter-increment: s; position: relative; padding: .7rem 0 .7rem 3rem; border-bottom: 1px solid var(--rule-2); }
.steps li::before { content: counter(s); position: absolute; left: 0; top: .6rem; width: 2rem; height: 2rem; border: 1.5px solid var(--blue); color: var(--blue);
  display: grid; place-items: center; font-weight: 700; border-radius: 50%; }
.doc { max-width: 76ch; } .doc h2 { margin-top: 1.6rem; } .doc li { margin-bottom: .35rem; }
.fingerprint { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--rule); font-size: .85rem; color: var(--ink-2); }
table.price td, table.price th { text-align: center; } table.price th[scope=row] { text-align: left; font-weight: 500; }

/* ---------- App shell ---------- */
.app { display: grid; grid-template-columns: 250px 1fr; grid-template-rows: auto 1fr; min-height: 100vh; }
.topbar { grid-column: 1 / -1; display: flex; align-items: center; gap: 1rem; padding: .55rem 1rem; background: var(--ink); color: #fff; }
.topbar .brand { color: #fff; }
.topbar .who { margin-left: auto; font-size: .87rem; text-align: right; line-height: 1.25; }
.topbar .who small { color: #B8C4D2; display: block; }
.topbar .btn { background: transparent; color: #fff; border-color: #4A5C72; }
.topbar .btn:hover { border-color: #fff; }
.menu-toggle { display: none; }
.sidebar { background: var(--sheet); border-right: 1px solid var(--rule); padding: .8rem 0; overflow-y: auto; }
.sidebar h4 { font-size: .78rem; color: var(--ink-2); font-weight: 600; margin: 1rem 1rem .3rem; }
.sidebar a { display: block; padding: .38rem 1rem; color: var(--ink); text-decoration: none; font-size: .93rem; border-left: 3px solid transparent; }
.sidebar a:hover { background: #F2F5F8; }
.sidebar a.on { border-left-color: var(--amber); background: #F2F5F8; font-weight: 600; }
.main { padding: 1.4rem 1.8rem 4rem; min-width: 0; }
.titleblock { display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem; flex-wrap: wrap; border-bottom: 2px solid var(--ink); padding-bottom: .5rem; margin-bottom: 1rem; }
.titleblock h1 { margin: 0; }
.titleblock .meta { font-size: .85rem; color: var(--ink-2); text-align: right; }
.tabs { display: flex; gap: 0; flex-wrap: wrap; border-bottom: 1px solid var(--rule); margin-bottom: 1.2rem; }
.tabs a { padding: .5rem .8rem; text-decoration: none; color: var(--ink-2); border-bottom: 3px solid transparent; font-size: .92rem; margin-bottom: -1px; }
.tabs a.on { color: var(--ink); border-bottom-color: var(--blue); font-weight: 600; }
.panel { background: var(--sheet); border: 1px solid var(--rule); border-radius: var(--r); padding: 1rem 1.2rem; margin: 0 0 1.2rem; }
.panel > h2:first-child, .panel > h3:first-child { margin-top: 0; }
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); border: 1px solid var(--rule); border-radius: var(--r); background: var(--sheet); margin-bottom: 1.2rem; }
.stats div { padding: .7rem .9rem; border-right: 1px solid var(--rule-2); }
.stats div:last-child { border-right: 0; }
.stats b { display: block; font-size: 1.6rem; font-variant-numeric: tabular-nums; line-height: 1.1; }
.stats span { font-size: .83rem; color: var(--ink-2); }
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1.2rem; }
.auth { max-width: 440px; margin: 7vh auto; background: var(--sheet); border: 1px solid var(--rule); border-top: 4px solid var(--ink); padding: 1.6rem 1.8rem; border-radius: var(--r); }
.auth .brand { margin-bottom: 1.2rem; }
.qr { display: block; margin: .6rem 0; border: 1px solid var(--rule); image-rendering: pixelated; }
.empty { padding: 1.2rem; text-align: center; color: var(--ink-2); border: 1px dashed var(--rule); border-radius: var(--r); background: var(--sheet); }
.watermark { color: var(--red); font-size: .85rem; font-weight: 600; }

/* Modal and help drawer */
.overlay { position: fixed; inset: 0; background: rgba(27,42,58,.45); z-index: 40; display: flex; align-items: flex-start; justify-content: center; padding: 5vh 1rem; overflow-y: auto; }
.modal { background: var(--sheet); width: min(720px, 100%); border-radius: var(--r); border-top: 4px solid var(--blue); padding: 1.2rem 1.4rem; }
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: .5rem; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(560px, 100%); background: var(--sheet); z-index: 50; border-left: 1px solid var(--rule);
  box-shadow: -6px 0 24px rgba(27,42,58,.15); display: flex; flex-direction: column; }
.drawer-head { display: flex; gap: .5rem; align-items: center; padding: .7rem 1rem; border-bottom: 2px solid var(--ink); }
.drawer-head h2 { margin: 0 auto 0 0; }
.drawer-body { overflow-y: auto; padding: 1rem 1.2rem 3rem; }
.manual section { border-bottom: 1px solid var(--rule-2); padding: .6rem 0 .8rem; }
.manual h3 .n { color: var(--blue); margin-right: .45rem; font-variant-numeric: tabular-nums; }
.manual .toc { columns: 2; font-size: .88rem; margin: .5rem 0 1rem; padding-left: 1.2rem; }
.manual li { margin-bottom: .25rem; }

@media (max-width: 860px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; position: fixed; top: 3rem; left: 0; bottom: 0; width: 260px; z-index: 30; box-shadow: 4px 0 18px rgba(0,0,0,.15); }
  .sidebar.open { display: block; }
  .menu-toggle { display: inline-flex; }
  .main { padding: 1rem; }
  .split { grid-template-columns: 1fr; }
  .topbar .who small { display: none; }
}

@media print {
  .topbar, .sidebar, .tabs, .btn, .btn-row, .toast, .no-print { display: none !important; }
  .app { display: block; } .main { padding: 0; }
  body { background: #fff; }
  .drawer { position: static; box-shadow: none; border: 0; width: 100%; }
  .drawer-body { overflow: visible; }
  .printing-help .app { display: none; }
  .panel, .table-wrap { border-color: #999; break-inside: avoid; }
  thead th { position: static; }
}

/* ---- polish ---- */
th[scope=row], td > strong, .nowrap { white-space: nowrap; }
#toasts { position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%); z-index: 60; display: flex; flex-direction: column; gap: .4rem; align-items: center; pointer-events: none; }
#toasts .toast { position: static; transform: none; }
.manual .toc { list-style: none; padding-left: 0; }
.drawer > p { padding: .5rem 1.2rem; margin: 0; border-top: 1px solid var(--rule-2); }
@media (max-width: 860px) {
  .topbar { gap: .5rem; padding: .5rem .6rem; }
  .topbar .brand span { display: none; }
  .topbar .who { font-size: .8rem; }
}