:root {
  --bg: #f3f6f8;
  --card: #ffffff;
  --text: #15232d;
  --muted: #5d6b76;
  --line: #dde4ea;
  --brand: #0b6e78;
  --brand-dark: #085660;
  --danger: #b4232c;
  --ok-bg: #e4f5ec;
  --ok-text: #136b3a;
  --err-bg: #fdecec;
  --err-text: #9b1c24;
  --radius: 12px;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; padding: 0; }
body {
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text); background: var(--bg); min-height: 100vh;
}
a { color: var(--brand); }
h1 { font-size: 1.4rem; margin: 0 0 6px; line-height: 1.25; }
h2 { font-size: 1.1rem; margin: 0 0 6px; }
.muted { color: var(--muted); }
.small { font-size: 0.88rem; }
small { font-weight: normal; }

.top { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; color: var(--brand); text-decoration: none; font-size: 1.05rem; }
.brand small { color: var(--muted); font-weight: 500; margin-left: 6px; }
.nav { display: flex; gap: 8px; align-items: center; }
.nav form { margin: 0; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 20px 16px 40px; }
.foot { max-width: 1040px; margin: 0 auto; padding: 0 16px 40px; display: flex; justify-content: space-between; color: var(--muted); font-size: 0.85rem; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 18px; }
.card.login { max-width: 400px; margin: 48px auto 0; }
.card.center { text-align: center; max-width: 460px; margin: 48px auto 0; }
.hero { margin: 6px 0 20px; }
.hero p { color: var(--muted); max-width: 78ch; margin: 6px 0 0; }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 16px; border-radius: 8px; border: 1px solid var(--line); background: #fff; color: var(--text); font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; line-height: 1.2; white-space: nowrap; }
.btn:hover { border-color: #b9c4cd; background: #fafcfd; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn.ghost { background: transparent; }
.btn.danger { color: var(--danger); }
.btn.danger:hover { background: #fff5f5; border-color: #e3b4b7; }
.btn.small { padding: 7px 12px; font-size: 0.9rem; }
.btn.wide { width: 100%; margin-top: 18px; }
input:focus-visible, button:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

label { display: block; font-weight: 600; }
.login label { margin-top: 14px; }
.login label input { display: block; width: 100%; margin-top: 6px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font: inherit; }

.flash { padding: 12px 14px; border-radius: 8px; margin: 0 0 16px; font-weight: 500; }
.flash.ok { background: var(--ok-bg); color: var(--ok-text); }
.flash.error { background: var(--err-bg); color: var(--err-text); }
.flash ul { margin: 6px 0 0; padding-left: 20px; font-weight: 400; }

.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 10px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; background: #f8fafb; }
.seg-btn { border: 0; background: transparent; padding: 7px 16px; border-radius: 999px; font: inherit; font-weight: 600; color: var(--muted); cursor: pointer; }
.seg-btn[aria-pressed="true"] { background: var(--brand); color: #fff; }
.age-field { display: block; flex: 0 0 auto; }
.age-field .field { display: flex; align-items: center; gap: 6px; margin-top: 4px; }
.age-field input { width: 92px; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; font: inherit; font-weight: 600; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 2px 0 12px; }
.chip { --chip: var(--text); display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); background: #fff; font: inherit; font-size: 0.9rem; font-weight: 600; color: var(--muted); cursor: pointer; }
.chip:hover { border-color: var(--chip); color: var(--text); }
.chip[aria-pressed="true"] { background: var(--chip); border-color: var(--chip); color: #fff; }
.chip[aria-pressed="true"] .sw rect { fill: #fff; }

/* chart */
.chart { position: relative; width: 100%; min-height: 340px; }
.bia-chart svg { display: block; overflow: visible; }
.bia-grid line.minor { stroke: #eef2f5; stroke-width: 1; }
.bia-grid line.major { stroke: #d6dde3; stroke-width: 1; stroke-dasharray: 3 3; }
.bia-axis line { stroke: #6b7a86; stroke-width: 1.4; }
.bia-tick { font-size: 11px; fill: var(--muted); }
.bia-axis-title { font-size: 12px; fill: var(--text); font-weight: 700; }
.bia-title { font-size: 15px; font-weight: 700; fill: var(--text); paint-order: stroke; stroke: #fff; stroke-width: 4px; stroke-linejoin: round; }
.bia-label { font-size: 12px; font-weight: 700; }
.bia-band { cursor: crosshair; transition: fill-opacity .15s; }
.bia-band:hover { fill-opacity: .28; }
.bia-line { cursor: crosshair; pointer-events: stroke; }
.bia-empty { font-size: 14px; fill: var(--muted); }
.bia-tip { position: absolute; z-index: 2; max-width: 270px; background: #15232d; color: #fff; font-size: 0.85rem; line-height: 1.35; padding: 8px 10px; border-radius: 8px; pointer-events: none; box-shadow: 0 6px 20px rgba(0,0,0,.18); }

.legend { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; }
.legend-item { display: inline-flex; align-items: center; gap: 7px; font-weight: 500; padding: 5px 8px; border-radius: 8px; cursor: pointer; }
.legend-item:hover { background: #f3f6f8; }
.legend-item.off { opacity: .5; }
.legend-item input { margin: 0; accent-color: var(--brand); }
.legend-range { color: var(--muted); font-size: 0.85rem; }
.swatch { display: inline-block; width: 14px; height: 14px; border-radius: 4px; flex: none; vertical-align: -2px; }
.sw { vertical-align: -2px; margin-right: 2px; }

/* readings */
.readings { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; margin-top: 14px; }
.reading span { display: block; font-weight: 600; margin-bottom: 4px; }
.reading input { width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.readings-actions { grid-column: 1 / -1; display: flex; justify-content: flex-end; }
.results { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 6px; }
.results li { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; background: #f8fafb; }
.results li.ok { background: var(--ok-bg); }
.results li.out { background: var(--err-bg); }
.results li.na { background: #f1f3f5; color: var(--muted); }
.results small { color: var(--muted); }

/* ranges table */
.table-scroll { overflow-x: auto; }
table.ranges { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 0.93rem; }
table.ranges th, table.ranges td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.ranges th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: .03em; }
table.ranges td.note { color: var(--muted); font-size: 0.86rem; min-width: 220px; }
table.ranges td:nth-child(2), table.ranges td:nth-child(3) { white-space: nowrap; }

/* admin */
.global { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; margin-top: 12px; font-weight: 600; }
.global label { display: inline-flex; align-items: center; gap: 6px; }
.global input[type=number] { width: 80px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.check { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; cursor: pointer; }
.check input { accent-color: var(--brand); width: 16px; height: 16px; margin: 0; }
.metric { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; margin-bottom: 10px; }
.metric.disabled { opacity: .55; }
.metric-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.metric-head .label { flex: 1 1 220px; font: inherit; font-weight: 700; font-size: 1.02rem; padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; min-width: 0; }
.metric-head .unit { display: inline-flex; align-items: center; gap: 6px; }
.metric-head .unit input { width: 90px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.color { margin: 0; }
.color input { width: 40px; height: 34px; padding: 2px; border: 1px solid var(--line); border-radius: 8px; background: #fff; cursor: pointer; }
.note-field { margin-top: 10px; font-size: 0.85rem; color: var(--muted); }
.note-field input { display: block; width: 100%; margin-top: 3px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; font: inherit; color: var(--text); }
details.points summary { cursor: pointer; font-weight: 600; color: var(--brand); margin-top: 10px; }
details.points p { margin: 6px 0 0; }
.points-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 8px; }
.points-table h4 { margin: 0 0 6px; font-size: 0.9rem; color: var(--muted); }
.points-table table { width: 100%; border-collapse: collapse; }
.points-table th { text-align: left; font-size: 0.78rem; color: var(--muted); font-weight: 600; padding: 2px 4px; }
.points-table td { padding: 2px 4px; }
.points-table td:last-child { width: 36px; }
.points-table input { width: 100%; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; font: inherit; }
.points-table .btn { margin-top: 6px; }
.icon-btn { border: 1px solid var(--line); background: #fff; border-radius: 6px; width: 30px; height: 30px; cursor: pointer; color: var(--muted); font-size: 1.05rem; line-height: 1; }
.icon-btn:hover { color: var(--danger); border-color: #e3b4b7; }
.savebar { position: sticky; bottom: 0; display: flex; align-items: center; gap: 14px; padding: 12px 0; background: linear-gradient(to top, var(--bg) 75%, transparent); }
.resetbar { margin-top: 10px; }

@media (max-width: 600px) {
  .points-grid { grid-template-columns: 1fr; }
  .foot { flex-direction: column; gap: 4px; }
  .nav .btn { padding: 8px 10px; font-size: 0.9rem; }
  .wrap { padding-top: 14px; }
}

/* saved records */
.person { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; margin-top: 14px; }
.name-field { flex: 1 1 240px; }
.name-field input { display: block; width: 100%; margin-top: 4px; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px; font: inherit; font-weight: 600; }
.save-actions { display: flex; gap: 8px; }
.record-banner { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin-top: 12px; padding: 10px 12px; border-radius: 8px; background: #eef7f8; border: 1px solid #cfe6e8; font-size: 0.92rem; }
.record-banner.error { background: var(--err-bg); border-color: #f1c4c7; color: var(--err-text); }
.record-banner input { flex: 1 1 220px; min-width: 0; font: inherit; font-size: 0.85rem; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.search { padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px; font: inherit; min-width: 220px; }
.empty { color: var(--muted); text-align: center; padding: 30px; border: 1px dashed var(--line); border-radius: var(--radius); }
.count { font-size: 0.8rem; background: var(--line); border-radius: 999px; padding: 1px 9px; color: var(--muted); vertical-align: middle; margin-left: 6px; }
table.records { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 0.93rem; }
table.records th, table.records td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.records th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: .03em; }
table.records td.name { font-weight: 600; white-space: nowrap; }
table.records td.summary { color: var(--muted); font-size: 0.86rem; min-width: 240px; }
table.records td.date { white-space: nowrap; color: var(--muted); font-size: 0.88rem; }
table.records td.actions { white-space: nowrap; }
table.records td.actions .btn { margin-right: 6px; }
.inline-form { display: inline; margin: 0; }
code { font-size: 0.88em; background: #f1f3f5; padding: 1px 5px; border-radius: 4px; }