:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #6f6d68;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --hover: rgba(11, 11, 11, 0.04);
  --forecast: #2a78d6;
  --forecast-band: rgba(42, 120, 214, 0.16);
  --actual: #eb6834;
  --critical: #d03b3b;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #a3a29a;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --hover: rgba(255, 255, 255, 0.05);
    --forecast: #3987e5;
    --forecast-band: rgba(57, 135, 229, 0.22);
    --actual: #d95926;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
h1 { font-size: 18px; margin: 0; font-weight: 600; }
h2 { font-size: 15px; margin: 0 0 8px; font-weight: 600; }
.note { color: var(--ink-2); margin: 8px 0 0; font-size: 14px; }
.status:empty { display: none; }
.error { color: var(--critical); min-height: 1.5em; margin: 8px 0 0; font-size: 14px; }

.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 10px 24px; background: var(--surface); border-bottom: 1px solid var(--border);
}
nav { display: flex; gap: 4px; }
nav button {
  background: none; border: 0; color: var(--ink-2); font: inherit;
  padding: 6px 12px; border-radius: 6px; cursor: pointer; white-space: nowrap;
}
nav button:hover { background: var(--hover); }
nav button[aria-current="page"] { color: var(--ink); font-weight: 600; background: var(--hover); }

main { max-width: 1040px; margin: 0 auto; padding: 20px 24px 48px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px 20px; margin-bottom: 16px; }
.empty { color: var(--ink-2); padding: 64px 16px; text-align: center; }
.toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; font-size: 14px; color: var(--ink-2); }
.toolbar .note { margin: 0; }
.switch { display: inline-flex; align-items: center; gap: 6px; color: var(--ink); cursor: pointer; }
.switch input { width: 16px; height: 16px; accent-color: var(--forecast); margin: 0; }
select, input[type="password"], input[type="file"] {
  font: inherit; color: inherit; background: var(--surface);
  border: 1px solid var(--axis); border-radius: 6px; padding: 6px 8px; max-width: 100%;
}
button.primary, button.ghost { font: inherit; border-radius: 6px; padding: 6px 14px; cursor: pointer; border: 1px solid transparent; }
button.primary { background: var(--forecast); color: #fff; font-weight: 600; }
button.ghost { background: none; color: var(--ink-2); border-color: var(--axis); }
#remove { margin-top: 12px; }
:focus-visible { outline: 2px solid var(--forecast); outline-offset: 2px; }

.chart { width: 100%; height: 420px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; margin-top: 8px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; font-weight: 500; color: var(--ink-2); font-size: 13px; padding: 6px 10px; border-bottom: 1px solid var(--axis); }
td { padding: 7px 10px; border-bottom: 1px solid var(--grid); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
tr.big td { font-weight: 600; }

.login { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login form { width: 320px; max-width: 100%; display: grid; gap: 10px; }
.login label { color: var(--ink-2); font-size: 14px; }

@media (max-width: 640px) {
  .topbar { padding: 8px 12px; }
  nav button { padding: 6px 8px; }
  main { padding: 16px 16px 40px; }
  .card { padding: 12px 14px; }
  .chart { height: 340px; }
  #day-table { font-size: 13px; }
  #day-table th, #day-table td { padding: 6px 4px; white-space: normal; }
  #day-table td { white-space: nowrap; }
}