@font-face {
  font-family: "Instrument Sans";
  font-style: normal;
  font-display: swap;
  font-weight: 400 700;
  font-stretch: 75% 100%;
  src: url(/static/fonts/instrument-sans-latin-wdth-normal.woff2) format("woff2-variations");
}

/* ---------- tokens ---------- */

:root {
  --paper: #eef2f4;
  --surface: #ffffff;
  --ink: #13212b;
  --ink-2: #4a5964;
  --ink-3: #75838d;
  --rule: #d6dee3;
  --rule-strong: #b9c5cc;
  --accent: #0b6e8c;
  --accent-wash: rgba(11, 110, 140, 0.1);
  --ok: #2e8b57;
  --warn: #a8701a;
  --off: #98a3ab;
  --danger: #c0392b;
  --radius-tile: 18px;
  --radius-control: 9px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0e171d;
    --surface: #142028;
    --ink: #e6edf1;
    --ink-2: #a8b5be;
    --ink-3: #74838d;
    --rule: #24333d;
    --rule-strong: #34454f;
    --accent: #4fb3d1;
    --accent-wash: rgba(79, 179, 209, 0.14);
    --ok: #4cb782;
    --warn: #e0a84a;
    --off: #5e6b74;
    --danger: #e57363;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --paper: #0e171d;
  --surface: #142028;
  --ink: #e6edf1;
  --ink-2: #a8b5be;
  --ink-3: #74838d;
  --rule: #24333d;
  --rule-strong: #34454f;
  --accent: #4fb3d1;
  --accent-wash: rgba(79, 179, 209, 0.14);
  --ok: #4cb782;
  --warn: #e0a84a;
  --off: #5e6b74;
  --danger: #e57363;
  color-scheme: dark;
}

/* ---------- base ---------- */

* { box-sizing: border-box; }

html { background: var(--paper); }

body {
  margin: 0;
  font-family: "Instrument Sans", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 3px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

button, select, input { font: inherit; color: inherit; }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

.muted { color: var(--ink-3); }

.num { font-variant-numeric: tabular-nums; }

/* ---------- header ---------- */

.topbar {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 650;
  font-stretch: 87.5%;
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  view-transition-name: brand;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: conic-gradient(from 200deg, var(--ph-stops));
  box-shadow: inset 0 0 0 5px var(--paper);
  outline: 1px solid var(--rule-strong);
}

.nav { display: flex; gap: 4px; flex: 1; }

.nav a {
  color: var(--ink-2);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius-control);
}

.nav a:hover { color: var(--ink); background: var(--surface); }

.nav a[aria-current="page"] { color: var(--ink); background: var(--surface); box-shadow: inset 0 0 0 1px var(--rule); }

.tools { display: flex; gap: 6px; }

.icon-button {
  display: inline-grid;
  place-items: center;
  min-width: 36px;
  height: 36px;
  padding: 0 8px;
  border: 1px solid var(--rule);
  border-radius: var(--radius-control);
  background: transparent;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

.icon-button:hover { color: var(--ink); border-color: var(--rule-strong); }

.icon-button svg { width: 18px; height: 18px; }

/* ---------- pH scale (the one loud element) ---------- */

:root {
  --ph-stops: #d7263d, #e4472b, #ef6c23, #f59324, #f6b92b, #e9d43b, #c2d84a, #7dc35a,
    #3fae72, #229a8e, #2a7fb5, #3d63b0, #5149a3, #643a96, #742e86;
}

.scale { position: relative; padding-top: 6px; }

.scale-bar {
  height: 10px;
  border-radius: 5px;
  background: linear-gradient(90deg, var(--ph-stops));
}

.scale-needle {
  position: absolute;
  top: 0;
  left: var(--pos, 50%);
  width: 4px;
  height: 22px;
  margin-left: -2px;
  border-radius: 2px;
  background: var(--ink);
  box-shadow: 0 0 0 2px var(--surface);
  transition: left 0.9s var(--ease);
}

.scale[data-empty] .scale-needle { display: none; }

.scale-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 12px;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

.scale-ticks span { width: 2ch; text-align: center; }
.scale-ticks span:first-child { text-align: left; }
.scale-ticks span:last-child { text-align: right; }

/* ---------- status ---------- */

.status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--ink-2);
  white-space: nowrap;
}

.status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--off);
}

.status[data-state="live"]::before { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 22%, transparent); }
.status[data-state="late"]::before { background: var(--warn); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--ink-2);
}

.tag[data-kind="uncal"]::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 2px;
  border: 2px solid var(--warn);
}

.tag[data-kind="cal"]::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ok);
}

/* ---------- overview ---------- */

.lede {
  margin: 28px 0 22px;
  font-size: 25px;
  font-weight: 550;
  font-stretch: 87.5%;
  letter-spacing: -0.015em;
  line-height: 1.25;
  max-width: 34ch;
}

.tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 16px;
  padding-bottom: 48px;
}

.tile {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 18px 20px 16px;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-tile);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s;
}

.tile:hover { border-color: var(--rule-strong); }

.tile-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }

.tile-name { font-size: 17px; font-weight: 600; line-height: 1.3; }

.tile-where { font-size: 14px; color: var(--ink-3); min-height: 1.5em; }

.tile-reading { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin: 6px 0 10px; }

.readout {
  font-size: 64px;
  line-height: 0.95;
  font-weight: 600;
  font-stretch: 75%;
  letter-spacing: -0.02em;
  transition: color 0.6s;
}

.readout small { font-size: 0.32em; font-weight: 500; font-stretch: 100%; color: var(--ink-3); margin-left: 4px; letter-spacing: 0; }

.readout.fresh { color: var(--accent); transition: none; }

.facts { display: grid; gap: 2px; text-align: right; font-size: 14px; color: var(--ink-2); }

.facts b { color: var(--ink); font-weight: 600; }

.tile-foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 12px; font-size: 13px; color: var(--ink-3); }

.empty {
  padding: 56px 24px;
  border: 1px dashed var(--rule-strong);
  border-radius: var(--radius-tile);
  color: var(--ink-2);
  max-width: 560px;
}

.empty p { margin: 0 0 8px; }

/* ---------- detail ---------- */

.back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 15px;
}

.back:hover { color: var(--ink); }

.back svg { width: 16px; height: 16px; }

.detail-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin: 14px 0 6px; }

.detail-head h1 {
  margin: 0;
  font-size: 39px;
  line-height: 1.1;
  font-weight: 600;
  font-stretch: 87.5%;
  letter-spacing: -0.02em;
}

.detail-sub { color: var(--ink-3); margin: 4px 0 0; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 36px;
  align-items: end;
  padding: 26px 0 30px;
  border-bottom: 1px solid var(--rule);
}

.hero .readout { font-size: 112px; }

.hero .scale { margin-top: 18px; }

.hero dl { display: grid; grid-template-columns: auto 1fr; gap: 10px 20px; margin: 0; font-size: 15px; }

.hero dt { color: var(--ink-3); }

.hero dd { margin: 0; font-weight: 600; }

.controls { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 26px 0 14px; }

.segmented { display: inline-flex; padding: 3px; gap: 2px; background: var(--surface); border: 1px solid var(--rule); border-radius: 11px; }

.segmented button {
  border: 0;
  background: transparent;
  padding: 5px 12px;
  border-radius: 8px;
  color: var(--ink-2);
  cursor: pointer;
  font-variant-numeric: tabular-nums;
}

.segmented button[aria-pressed="true"] { background: var(--ink); color: var(--surface); }

.segmented button:not([aria-pressed="true"]):hover { color: var(--ink); background: var(--paper); }

.text-button { border: 0; background: none; color: var(--accent); cursor: pointer; padding: 4px 2px; }

.text-button[hidden] { display: none; }

.spacer { flex: 1; }

.export { display: flex; gap: 14px; font-size: 15px; }

.chart-block { margin-bottom: 26px; }

.chart-title { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 2px 16px; margin-bottom: 6px; }

.chart-title h2 { margin: 0; font-size: 16px; font-weight: 600; white-space: nowrap; }

.hint { font-size: 13px; color: var(--ink-3); }

/* ---------- chart ---------- */

.chart {
  position: relative;
  height: 300px;
  touch-action: pan-y;
  user-select: none;
  cursor: crosshair;
  border-radius: 10px;
}

.chart.small { height: 190px; }

.chart canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.chart.loading canvas { opacity: 0.45; transition: opacity 0.2s; }

.chart-x { position: absolute; top: 12px; bottom: 28px; width: 1px; background: var(--ink-3); pointer-events: none; }

.chart-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  margin: -5px 0 0 -5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 2px var(--surface);
  pointer-events: none;
}

.chart-select { position: absolute; top: 12px; bottom: 28px; background: var(--accent-wash); border-inline: 1px solid var(--accent); pointer-events: none; }

.chart-tip {
  position: absolute;
  top: 8px;
  min-width: 150px;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--rule-strong);
  border-radius: 10px;
  box-shadow: 0 6px 24px rgba(10, 30, 40, 0.12);
  font-size: 13px;
  line-height: 1.45;
  pointer-events: none;
  z-index: 2;
}

.chart-tip .tip-time { color: var(--ink-3); margin-bottom: 4px; }

.chart-tip .tip-row { display: flex; align-items: baseline; gap: 8px; }

.chart-tip .tip-row b { font-size: 15px; font-weight: 600; font-variant-numeric: tabular-nums; }

.chart-tip .tip-row span { color: var(--ink-3); }

.chart-tip .tip-key { width: 12px; height: 2px; border-radius: 1px; background: var(--accent); align-self: center; }

.chart [hidden] { display: none; }

/* ---------- tables and forms ---------- */

section.block { margin: 34px 0; }

section.block > h2 { font-size: 20px; font-weight: 600; font-stretch: 87.5%; margin: 0 0 12px; }

.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--rule); border-radius: 14px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }

th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--rule); vertical-align: middle; }

tr:last-child td { border-bottom: 0; }

th { font-weight: 500; color: var(--ink-3); font-size: 13px; }

td.num, th.num { text-align: right; }

details.values { margin-top: 10px; }

details.values summary { cursor: pointer; color: var(--accent); padding: 4px 0; }

details.values .table-wrap { margin-top: 10px; max-height: 360px; overflow-y: auto; }

.field {
  width: 100%;
  min-width: 70px;
  padding: 7px 10px;
  border: 1px solid var(--rule);
  border-radius: var(--radius-control);
  background: var(--paper);
}

.field:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-wash); }

.button {
  padding: 7px 14px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-control);
  background: var(--surface);
  cursor: pointer;
  font-weight: 550;
  white-space: nowrap;
}

.button:hover { border-color: var(--ink-3); }

.button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }

.button.danger { color: var(--danger); }

.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }

.message { min-height: 1.5em; color: var(--ink-2); }

.login { display: grid; gap: 10px; max-width: 380px; margin: 56px 0; }

.login h1 { margin: 0; font-size: 31px; font-weight: 600; font-stretch: 87.5%; letter-spacing: -0.015em; line-height: 1.15; }

.login p { margin: 0 0 8px; }

.login label { font-weight: 550; }

.login .button { justify-self: start; margin-top: 4px; }

.title-row { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; }

.callout { padding: 14px 16px; background: var(--surface); border: 1px solid var(--warn); border-radius: 14px; margin-bottom: 14px; }

/* ---------- motion ---------- */

@view-transition { navigation: auto; }

::view-transition-group(*) { animation-duration: 0.42s; animation-timing-function: var(--ease); }

::view-transition-old(root), ::view-transition-new(root) { animation-duration: 0.22s; }

@media (prefers-reduced-motion: reduce) {
  @view-transition { navigation: none; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- small screens ---------- */

@media (max-width: 760px) {
  .wrap { padding: 0 16px; }
  .topbar { gap: 12px; height: 60px; }
  .brand span:not(.brand-mark) { display: none; }
  .lede { font-size: 21px; }
  .hero { grid-template-columns: 1fr; gap: 22px; }
  .hero .readout { font-size: 84px; }
  .detail-head h1 { font-size: 30px; }
  .chart { height: 240px; }

  /* admin tables become stacked blocks with a label above each field */
  table.stack tr:first-child { display: none; }
  table.stack tr {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 10px 12px;
    padding: 14px;
    border-bottom: 1px solid var(--rule);
  }
  table.stack tr:last-child { border-bottom: 0; }
  table.stack td { display: block; padding: 0; border: 0; }
  table.stack td.wide { grid-column: 1 / -1; }
  table.stack td[data-label]::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 3px;
    font-size: 12px;
    color: var(--ink-3);
  }
}