:root {
  --bg: #f7f8fa; --card: #ffffff; --ink: #1c2330; --muted: #6b7280;
  --line: #e3e6ea; --brand: #0b3d61; --accent: #1f77b4;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 14px/1.45 -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
.topbar {
  display: flex; align-items: center; gap: 12px;
  background: var(--brand); color: #fff; padding: 10px 18px;
  position: sticky; top: 0; z-index: 50;
}
.brand { color: #fff; text-decoration: none; font-weight: 600; }
.logo { display: inline-flex; align-items: center; line-height: 0; margin-right: 4px; }
.logo img, .logo svg { display: block; }
.topbar .spacer { flex: 1; }
.asof, .back { color: #d6e6f2; text-decoration: none; font-size: 13px; }
.navfilter { font: inherit; font-size: 12px; padding: 3px 7px; margin-left: 6px; max-width: 200px;
  background: #fff; color: var(--ink); border: 1px solid #2a5a82; border-radius: 6px; cursor: pointer; }

/* Nav-bar station search */
.navsearch { position: relative; margin-left: 8px; }
.navsearch input { font: inherit; font-size: 13px; width: 300px; max-width: 40vw; padding: 5px 10px;
  border-radius: 7px; border: 1px solid #2a5a82; background: rgba(255,255,255,.14); color: #fff; }
.navsearch input::placeholder { color: rgba(255,255,255,.72); }
.navsearch input:focus { outline: none; background: #fff; color: var(--ink); border-color: var(--accent); }
.search-results { position: absolute; top: calc(100% + 4px); left: 0; z-index: 1000; width: 380px; max-width: 80vw;
  max-height: 64vh; overflow-y: auto; background: var(--card); border: 1px solid var(--line);
  border-radius: 8px; box-shadow: 0 8px 26px rgba(0,0,0,.22); }
.sr { display: grid; grid-template-columns: 1fr auto; gap: 1px 10px; padding: 7px 11px; cursor: pointer;
  border-bottom: 1px solid var(--line); }
.sr:last-child { border-bottom: 0; }
.sr:hover, .sr.sel { background: #eef4fb; }
.sr-name { font-weight: 600; color: var(--ink); font-size: 13px; }
.sr-key { font-size: 11px; color: var(--muted); font-family: ui-monospace, "Cascadia Code", monospace; text-align: right; align-self: center; }
.sr-meta { grid-column: 1 / -1; font-size: 11px; color: var(--muted); }
.navlink { color: #d6e6f2; text-decoration: none; font-size: 13px; margin-left: 6px; white-space: nowrap; }
.navlink:hover { color: #fff; text-decoration: underline; }

/* Flag reference page */
.flagintro { max-width: 900px; }
.flagdocs { display: flex; flex-direction: column; gap: 8px; }
.flagdoc { border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; background: var(--card); scroll-margin-top: 64px; }
.flagdoc:target { box-shadow: 0 0 0 2px var(--accent); }
.flagdoc h2 { display: flex; align-items: center; gap: 10px; font-size: 16px; margin: 0 0 6px; }
.flagval { font-family: ui-monospace, "Cascadia Code", monospace; font-weight: 700; min-width: 2.4em; }
.flagname { font-weight: 600; }
.flagmethods { margin-left: auto; font-size: 11px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 1px 9px; }
.flagsummary { font-weight: 600; margin: 2px 0; }
.flagrecog { color: var(--muted); font-size: 13px; }
.flagex { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 8px; }
.flagex figure { margin: 0; max-width: 560px; }
.flagex img { max-width: 100%; border: 1px solid var(--line); border-radius: 6px; }
.flagex figcaption { font-size: 11px; color: var(--muted); margin-top: 3px; }
.diaglink { color: var(--accent); text-decoration: none; font-weight: 600; }
.diaglink:hover { text-decoration: underline; }
.flaglink { color: var(--ink); text-decoration: none; border-bottom: 1px dotted var(--muted); }
.flaglink:hover { color: var(--accent); border-bottom-color: var(--accent); }
.back:hover { text-decoration: underline; }
.container { max-width: 1280px; margin: 0 auto; padding: 18px; }
h1 { font-size: 22px; margin: 8px 0 4px; }
h2 { font-size: 17px; margin: 22px 0 10px; }
.subtitle { margin: 0 0 12px; font-size: 15px; color: #33405a; font-weight: 500; }
.muted { color: var(--muted); font-weight: 400; font-size: 13px; }
.badge { background: var(--accent); color: #fff; font-size: 12px; padding: 2px 8px;
  border-radius: 10px; vertical-align: middle; }
.foot { color: var(--muted); font-size: 12px; padding: 18px; text-align: center; }
.foot code { font-size: 11px; }

/* KPI cards */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin: 8px 0 4px; }
.kpi { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.kpi-val { font-size: 22px; font-weight: 700; }
.kpi-lbl { color: var(--muted); font-size: 12px; margin-top: 2px; }

/* Figure cards */
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 8px; margin: 12px 0; }
@media (max-width: 900px) { .grid2, .kpis { grid-template-columns: 1fr; } }

/* Metadata bar */
.metabar { display: flex; flex-wrap: wrap; gap: 8px 18px; background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin-bottom: 6px; }
.metabar b { color: var(--muted); font-weight: 600; margin-right: 4px; }

/* Tables */
table { border-collapse: collapse; width: 100%; background: var(--card);
  border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
th, td { padding: 6px 10px; text-align: left; border-bottom: 1px solid var(--line); }
th { background: #eef1f4; font-size: 12px; text-transform: uppercase; letter-spacing: .02em;
  color: #44505f; }
tbody tr:hover { background: #f3f8fc; }
td a { color: var(--accent); text-decoration: none; }
td a:hover { text-decoration: underline; }
.msg { color: var(--muted); font-size: 12px; max-width: 360px; }
.stationtable td, .stationtable th { font-variant-numeric: tabular-nums; }
.sortable th { cursor: pointer; user-select: none; }
.sortable th.sort-asc::after { content: " ▲"; color: var(--accent); }
.sortable th.sort-desc::after { content: " ▼"; color: var(--accent); }

/* Status dots, sparkline, watchlist */
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%;
  margin-right: 4px; vertical-align: middle; }
.spark { vertical-align: middle; }
.watchtable td { font-size: 13px; }
.issue { font-size: 12px; padding: 1px 7px; border-radius: 9px; color: #fff; }
.issue-Valuedrift { background: #b45309; }
.issue-Failurestreak { background: #b91c1c; }
.issue-Lowrecentsuccess { background: #6d28d9; }

/* Method tags (pills) */
.mtag { font-size: 11px; font-weight: 600; padding: 1px 8px; border-radius: 10px;
  color: #fff; vertical-align: middle; margin-left: 4px; }
.mtag-rayleigh { background: #1f77b4; }
.mtag-cloud { background: #2ca02c; }

/* Per-method section on a station page */
.methodblock { border-top: 2px solid var(--line); margin-top: 22px; padding-top: 6px; }
.methodblock h2 { display: flex; align-items: baseline; gap: 10px; }
.methodblock h3 { font-size: 13px; margin: 16px 0 8px; font-weight: 600; }

/* Pagination controls */
.pager { display: flex; align-items: center; gap: 12px; margin: 10px 0 4px; }
.pager button { font: inherit; font-size: 13px; padding: 4px 12px; cursor: pointer;
  background: var(--card); border: 1px solid var(--line); border-radius: 7px; color: var(--ink); }
.pager button:hover:not(:disabled) { background: #eef4fb; border-color: var(--accent); }
.pager button:disabled { opacity: .45; cursor: default; }
.pager-label { color: var(--muted); font-size: 12px; }

/* Diagnostic viewer (station page) */
.diag h3 { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 14px; margin: 4px 2px 12px; }
.diag-nav { display: inline-flex; gap: 4px; }
.diag-nav button { font: inherit; font-size: 12px; padding: 2px 10px; cursor: pointer;
  background: var(--card); border: 1px solid var(--line); border-radius: 6px; color: var(--ink); }
.diag-nav button:hover { background: #eef4fb; border-color: var(--accent); }
.diag-hint { font-size: 11px; }
.diag-date { font-weight: 600; color: var(--ink); }

/* QC flag button (red) + its floating export widget — client-side localStorage QC flagging */
.diag-nav button.diag-flag { color: #fff; background: #d62728; border-color: #d62728; font-weight: 600; }
.diag-nav button.diag-flag:hover { background: #b81f1f; border-color: #b81f1f; }
.diag-nav button.diag-flag.flagged { background: #7a1414; border-color: #7a1414;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.5); }
#qcflag-widget { position: fixed; right: 14px; bottom: 14px; z-index: 60; display: flex; gap: 8px;
  align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 7px 11px; box-shadow: 0 2px 12px rgba(0, 0, 0, 0.14); font-size: 13px; }
#qcflag-widget .qcw-n { color: #d62728; font-weight: 700; }
#qcflag-widget button { font: inherit; font-size: 12px; padding: 3px 9px; cursor: pointer;
  border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--ink); }
#qcflag-widget button:hover { border-color: var(--accent); }
#qcflag-widget .qcw-clr:hover { border-color: #d62728; color: #d62728; }
.diag-body { display: flex; gap: 16px; align-items: flex-start; flex-wrap: wrap; }
.diag-cal { display: flex; flex-direction: column; gap: 10px; flex: 0 0 auto; }
.diag-imglink { flex: 1 1 640px; min-width: 320px; line-height: 0; }
.diag-img { max-width: 100%; border: 1px solid var(--line); border-radius: 6px; }
.cal-month { font-size: 10px; }
.cal-title { text-align: center; font-weight: 600; color: var(--muted); margin-bottom: 3px; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 17px); gap: 2px; }
.cal-wd { text-align: center; color: #b6bdc6; font-size: 9px; }
.cal-day { width: 17px; height: 17px; line-height: 17px; text-align: center; border-radius: 3px;
  font-size: 9px; color: #c2c8cf; background: #f1f3f5; }
.cal-day.empty { background: transparent; }
.cal-day.avail { cursor: pointer; font-weight: 600; }
.cal-day.avail.good { background: #2ca02c; color: #fff; }
.cal-day.avail.good:hover { background: #1f7a1f; }
.cal-day.avail.rejected { background: #d9dde1; color: #566; }
.cal-day.avail.rejected:hover { background: #c4c9ce; }
.cal-day.none { color: #ccd2d8; }
.cal-day.sel { outline: 2px solid #d62728; }
.cal-nav { display: flex; align-items: center; gap: 6px; margin-bottom: 5px; }
.cal-nav .cal-select { font-size: 10px; padding: 1px 2px; max-width: 110px; }
.cal-prev, .cal-next { font-size: 13px; line-height: 1; padding: 0 7px; cursor: pointer;
  border: 1px solid #ccd2d8; background: #f7f8fa; border-radius: 3px; }
.cal-prev:disabled, .cal-next:disabled { opacity: .35; cursor: default; }
.cal-window { display: flex; flex-direction: column; gap: 10px; }
.cal-key { display: inline-block; width: 11px; height: 11px; border-radius: 3px; vertical-align: -1px; margin: 0 1px; }
.cal-key.cal-ok { background: #2ca02c; }
.cal-key.cal-bad { background: #d9dde1; border: 1px solid #b9bfc5; }

/* QC flag comment dialog */
.qcm-overlay { position: fixed; inset: 0; z-index: 2000; background: rgba(12,22,38,.45);
  display: flex; align-items: center; justify-content: center; }
.qcm-dialog { background: var(--card); color: var(--ink); border: 1px solid var(--line);
  border-radius: 11px; box-shadow: 0 14px 44px rgba(0,0,0,.32); width: 460px; max-width: 92vw; padding: 18px 20px; }
.qcm-head { font-weight: 700; font-size: 15px; }
.qcm-sub { color: var(--muted); font-size: 12px; margin: 3px 0 14px;
  font-family: ui-monospace, "Cascadia Code", monospace; }
.qcm-presets { display: flex; flex-direction: column; gap: 8px; }
.qcm-preset { text-align: left; padding: 9px 12px; border: 1px solid var(--line); border-radius: 8px;
  background: #f3f6fb; color: var(--ink); font: inherit; font-size: 13px; cursor: pointer; }
.qcm-preset b { display: inline-block; min-width: 16px; color: var(--brand); }
.qcm-preset:hover { background: #e7eff8; border-color: var(--accent); }
.qcm-label { display: block; margin: 14px 0 5px; font-size: 12px; color: var(--muted); }
.qcm-text { width: 100%; font: inherit; font-size: 13px; padding: 7px 9px; border: 1px solid var(--line);
  border-radius: 7px; resize: vertical; background: #fff; color: var(--ink); }
.qcm-text:focus { outline: none; border-color: var(--accent); }
.qcm-actions { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; }
.qcm-right { display: flex; gap: 8px; }
.qcm-actions button { font: inherit; font-size: 13px; padding: 7px 14px; border-radius: 7px;
  cursor: pointer; border: 1px solid var(--line); background: #fff; color: var(--ink); }
.qcm-save { background: var(--brand); color: #fff; border-color: var(--brand); }
.qcm-save:hover { background: #0d4a76; }
.qcm-cancel:hover { background: #f0f2f5; }
.qcm-remove { color: #a3261f; border-color: #e3b3ae; }
.qcm-remove:hover { background: #fbecea; }