:root {
  --bg: #0d1117;
  --bg-elev: #161b22;
  --bg-input: #0b0f14;
  --border: #262d36;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent-strong: #1f6feb;
  --pos: #3fb950;
  --neg: #f85149;
  --warn: #d29922;
  --radius: 10px;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.03), 0 8px 24px rgba(0, 0, 0, 0.25);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
h3 { font-size: 14px; margin: 0 0 8px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; }
.muted { color: var(--muted); }
.mono { font-family: var(--mono); }
.pos { color: var(--pos); }
.neg { color: var(--neg); }
.warn { color: var(--warn); }

/* Layout */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 24px;
  padding: 0 24px; height: 56px;
  background: rgba(13, 17, 23, 0.92); backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; letter-spacing: .02em; color: var(--text); white-space: nowrap; }
.brand span { color: var(--accent); }
.nav { display: flex; gap: 4px; overflow-x: auto; }
.nav a {
  color: var(--muted); padding: 6px 12px; border-radius: 6px; white-space: nowrap;
}
.nav a:hover { color: var(--text); background: var(--bg-elev); text-decoration: none; }
.nav a.active { color: var(--text); background: var(--bg-elev); box-shadow: inset 0 -2px 0 var(--accent); }
main { max-width: 1280px; margin: 0 auto; padding: 24px; }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
footer { max-width: 1280px; margin: 0 auto; padding: 16px 24px 40px; color: var(--muted); font-size: 12px; }

.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-form { grid-template-columns: minmax(320px, 420px) minmax(0, 1fr); align-items: start; }
@media (max-width: 900px) {
  .grid-2, .grid-3, .grid-form { grid-template-columns: 1fr; }
  main { padding: 16px; }
  .topbar { padding: 0 16px; gap: 12px; }
}

.card {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow); min-width: 0;
}
.card + .card { margin-top: 0; }
.section { margin-top: 16px; }

/* Stat tiles */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.stat {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px;
}
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 22px; font-weight: 650; margin-top: 4px; font-variant-numeric: tabular-nums; }
.stat .sub { color: var(--muted); font-size: 12px; margin-top: 2px; }

.kv { display: grid; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); gap: 0 24px; }
.kv div { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; border-bottom: 1px dashed var(--border); }
.kv dt, .kv .k { color: var(--muted); }
.kv .v { font-variant-numeric: tabular-nums; font-family: var(--mono); font-size: 13px; text-align: right; }

/* Forms */
label { display: block; color: var(--muted); font-size: 12px; margin: 12px 0 6px; text-transform: uppercase; letter-spacing: .04em; }
label:first-child { margin-top: 0; }
input, select {
  width: 100%; background: var(--bg-input); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 9px 11px; font: inherit; outline: none;
}
input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.15); }
input[type=checkbox] { width: auto; margin: 0 6px 0 0; vertical-align: -2px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }
.inline-check { display: flex; align-items: center; text-transform: none; letter-spacing: 0; font-size: 13px; color: var(--text); margin-top: 14px; }
details { margin-top: 14px; border-top: 1px solid var(--border); padding-top: 10px; }
summary { cursor: pointer; color: var(--accent); font-size: 13px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 6px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--bg-input); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 14px; font: inherit; cursor: pointer; white-space: nowrap;
}
.btn:hover { border-color: var(--muted); text-decoration: none; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--accent-strong); border-color: var(--accent-strong); color: #fff; font-weight: 600; }
.btn-primary:hover { background: #388bfd; border-color: #388bfd; }
.btn-block { width: 100%; margin-top: 18px; padding: 11px; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-danger:hover { border-color: var(--neg); color: var(--neg); }

/* Search dropdown */
.search { position: relative; }
.search-results {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0; z-index: 20;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: 8px;
  max-height: 300px; overflow-y: auto; box-shadow: var(--shadow);
}
.search-results:empty { display: none; }
.search-item { display: flex; justify-content: space-between; gap: 8px; padding: 8px 12px; cursor: pointer; }
.search-item:hover, .search-item.active { background: var(--bg-input); }
.search-item .sym { font-weight: 600; }
.tag { display: inline-block; font-size: 11px; padding: 1px 7px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.tag-ok { color: var(--pos); border-color: rgba(63, 185, 80, .4); }
.tag-miss { color: var(--warn); border-color: rgba(210, 153, 34, .4); }

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; position: sticky; top: 0; background: var(--bg-elev); }
th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { color: var(--text); }
th.sorted-asc::after { content: " ▲"; }
th.sorted-desc::after { content: " ▼"; }
td.num, th.num { text-align: right; }
tbody tr:hover { background: rgba(255, 255, 255, 0.02); }
tr.clickable { cursor: pointer; }
.empty { color: var(--muted); text-align: center; padding: 28px; }
.scroll-y { max-height: 560px; overflow-y: auto; }

/* Filters bar */
.filters { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; margin-bottom: 12px; }
.filters > div { min-width: 130px; }
.filters label { margin-top: 0; }

/* Status / alerts */
.alert { border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-top: 12px; font-size: 13px; }
.alert-error { border-color: rgba(248, 81, 73, .5); background: rgba(248, 81, 73, .08); color: #ffb3ad; }
.alert-info { border-color: rgba(88, 166, 255, .4); background: rgba(88, 166, 255, .06); }
.alert-warn { border-color: rgba(210, 153, 34, .5); background: rgba(210, 153, 34, .08); }
.progress { height: 6px; background: var(--bg-input); border-radius: 999px; overflow: hidden; margin-top: 10px; }
.progress > div { height: 100%; background: var(--accent); width: 0; transition: width .3s; }
.spinner { width: 14px; height: 14px; border: 2px solid rgba(255,255,255,.25); border-top-color: #fff; border-radius: 50%; animation: spin .8s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

.datasets { margin-top: 8px; display: grid; gap: 6px; }
.dataset { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; padding: 6px 10px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg-input); }

/* Charts */
.chart-box { position: relative; height: 320px; }
.chart-box.small { height: 220px; }

/* Monthly heatmap */
.heat td { text-align: right; font-size: 12px; padding: 6px 8px; }
.heat td.year { text-align: left; color: var(--muted); font-weight: 600; }

.disclaimer { font-size: 12px; color: var(--muted); border-left: 3px solid var(--warn); padding: 6px 12px; margin-top: 12px; }
.rules { margin: 0; padding-left: 18px; }
.rules li { margin: 4px 0; }
.row > div > label:first-child, .row-3 > div > label:first-child { margin-top: 12px; }