/* HaLowLink SVP dashboard — restrained design system.
   Neutral ink + hairline surfaces; brand accent #FF6200 used sparingly;
   validated status + series palette for data. Light/dark via custom props. */

:root {
  color-scheme: light;
  --brand: #FF6200;
  --brand-ink: #c44e00;

  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f3f2ef;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);

  --good: #0ca30c;
  --critical: #d03b3b;
  --warning: #fab219;
  --serious: #ec835a;

  --series-signal: #2a78d6;
  --series-battery: #1baf7a;
  --series-clips: #eb6834;

  --radius: 10px;
  --shadow: 0 1px 2px rgba(11,11,11,0.04), 0 1px 3px rgba(11,11,11,0.06);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #232321;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #898781;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255,255,255,0.10);
    --good: #0ca30c; --critical: #e66767; --warning: #fab219; --serious: #ec835a;
    --series-signal: #3987e5; --series-battery: #199e70; --series-clips: #d95926;
    --brand-ink: #ff7a28;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--page);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--series-signal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---- layout ---- */
.app { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 16px;
  display: flex; flex-direction: column; gap: 4px;
  position: sticky; top: 0; height: 100vh;
}
.brand { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; padding: 0 6px; }
.brand img { width: 30px; height: 30px; }
.brand .title { font-weight: 650; font-size: 15px; letter-spacing: -0.2px; }
.brand .sub { font-size: 11px; color: var(--muted); }
.nav a {
  display: block; padding: 9px 12px; border-radius: 8px;
  color: var(--ink-2); font-weight: 500; margin-bottom: 2px;
}
.nav a:hover { background: var(--surface-2); text-decoration: none; }
.nav a.active { background: var(--surface-2); color: var(--ink); box-shadow: inset 2px 0 0 var(--brand); }
.sidebar .spacer { flex: 1; }
.sidebar .user { font-size: 12px; color: var(--muted); padding: 6px; border-top: 1px solid var(--border); margin-top: 8px; }

.main { padding: 28px 32px; max-width: 1280px; }
.page-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 4px; flex-wrap: wrap; }
h1 { font-size: 22px; font-weight: 650; letter-spacing: -0.3px; margin: 0; }
h2 { font-size: 15px; font-weight: 600; margin: 0 0 12px; }
.subtitle { color: var(--muted); font-size: 13px; margin: 2px 0 22px; }
.crumbs { font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.crumbs a { color: var(--muted); }

/* ---- cards ---- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
}
.grid { display: grid; gap: 16px; }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .cols-4, .cols-3, .cols-2 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .cols-4, .cols-3, .cols-2, .app { grid-template-columns: 1fr; } }

/* ---- stat tiles ---- */
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat .label { font-size: 12px; color: var(--muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.4px; }
.stat .value { font-size: 30px; font-weight: 650; letter-spacing: -0.5px; }
.stat .meta { font-size: 12px; color: var(--ink-2); }
.stat .value.sm { font-size: 20px; }

/* ---- status pills (color + icon + label, never color alone) ---- */
.pill { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600;
  padding: 2px 9px; border-radius: 20px; border: 1px solid var(--border); white-space: nowrap; }
.pill .dot { width: 7px; height: 7px; border-radius: 50%; }
.pill.online { color: var(--good); } .pill.online .dot { background: var(--good); }
.pill.offline { color: var(--critical); } .pill.offline .dot { background: var(--critical); }
.pill.stale, .pill.unknown { color: var(--serious); } .pill.stale .dot, .pill.unknown .dot { background: var(--serious); }
.pill.provisional { color: var(--warning); } .pill.provisional .dot { background: var(--warning); }

/* ---- tables ---- */
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.4px;
  color: var(--muted); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--border); }
td { padding: 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tbody tr:hover { background: var(--surface-2); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.clickable { cursor: pointer; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 12px; color: var(--ink-2); }

/* ---- controls ---- */
.toolbar { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
input[type="text"], input[type="password"], select {
  font: inherit; padding: 8px 11px; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface); color: var(--ink); min-width: 0;
}
input:focus, select:focus { outline: 2px solid var(--brand); outline-offset: -1px; }
.btn { font: inherit; font-weight: 600; padding: 8px 14px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface-2); color: var(--ink); }
.btn:hover { background: var(--grid); }
.btn.primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.btn.primary:hover { background: var(--brand-ink); }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button { font: inherit; border: 0; background: var(--surface); color: var(--ink-2); padding: 7px 12px; cursor: pointer; }
.seg button.active { background: var(--surface-2); color: var(--ink); font-weight: 600; }
.seg button + button { border-left: 1px solid var(--border); }

.chip { font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 6px;
  background: var(--surface-2); color: var(--ink-2); border: 1px solid var(--border); }

/* ---- chart ---- */
.chart-wrap { position: relative; height: 260px; }
.chart-wrap.tall { height: 300px; }
.note { font-size: 12px; color: var(--muted); margin-top: 8px; }
.banner { background: var(--surface-2); border: 1px solid var(--border); border-left: 3px solid var(--warning);
  border-radius: 8px; padding: 10px 14px; font-size: 13px; color: var(--ink-2); margin-bottom: 16px; }

/* ---- login ---- */
.auth { min-height: 100vh; display: grid; place-items: center; background: var(--page); padding: 20px; }
.auth .box { width: 100%; max-width: 380px; }
.auth .logo { text-align: center; margin-bottom: 22px; }
.auth .logo img { width: 54px; height: 54px; }
.auth h1 { font-size: 19px; text-align: center; margin: 12px 0 2px; }
.auth .sub { text-align: center; color: var(--muted); font-size: 13px; margin-bottom: 22px; }
.auth label { display: block; font-size: 12px; font-weight: 600; color: var(--ink-2); margin: 12px 0 5px; }
.auth input { width: 100%; }
.auth .btn { width: 100%; margin-top: 20px; }
.auth .err { background: color-mix(in srgb, var(--critical) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--critical) 35%, transparent); color: var(--critical);
  padding: 9px 12px; border-radius: 8px; font-size: 13px; margin-bottom: 4px; }
.foot { color: var(--muted); font-size: 11px; text-align: center; margin-top: 24px; }
dl.meta { display: grid; grid-template-columns: auto 1fr; gap: 6px 18px; margin: 0; font-size: 13px; }
dl.meta dt { color: var(--muted); } dl.meta dd { margin: 0; font-weight: 500; }
.empty { color: var(--muted); text-align: center; padding: 40px; font-size: 13px; }