:root {
  --bg: #f4f6fa; --card: #fff; --text: #1b1f24; --muted: #5d6673;
  --accent: #1f6feb; --ok: #1a7f37; --bad: #cf222e; --border: #d8dee4;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0d1117; --card: #161b22; --text: #e6edf3; --muted: #8d96a0; --border: #30363d; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.45 system-ui, sans-serif; background: var(--bg); color: var(--text); }
header {
  display: flex; align-items: center; justify-content: space-between;
  padding: calc(12px + env(safe-area-inset-top)) 16px 12px; background: var(--accent); color: #fff;
}
h1 { font-size: 1.15rem; margin: 0; }
h2 { font-size: 1rem; margin: 0 0 12px; }
main { max-width: 640px; margin: 0 auto; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-bottom: 16px; }
label { display: block; font-size: .9rem; color: var(--muted); margin-bottom: 12px; }
input {
  display: block; width: 100%; margin-top: 4px; padding: 10px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
}
button {
  font: inherit; padding: 10px 16px; border: 0; border-radius: 8px; cursor: pointer;
  background: var(--accent); color: #fff;
}
button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
button.link { background: none; color: var(--accent); padding: 0; }
button:disabled { opacity: .6; cursor: wait; }
form button[type=submit], form button.passkey { width: 100%; }
form button.passkey { margin-top: 8px; }
[hidden] { display: none !important; }
.row { display: flex; gap: 8px; align-items: center; justify-content: space-between; }
.row h2 { margin: 0; }
.badge { font-size: .75rem; padding: 2px 8px; border-radius: 999px; background: rgba(127,127,127,.25); }
.badge.ok { background: var(--ok); color: #fff; }
.badge.bad { background: var(--bad); color: #fff; }
.hint { color: var(--muted); font-size: .85rem; }
.error { color: var(--bad); }
.meta { color: var(--muted); font-size: .85rem; margin: 12px 0 8px; word-break: break-all; }
pre { margin: 0; padding: 12px; background: var(--bg); border-radius: 8px; white-space: pre-wrap; word-break: break-word; }
#history { list-style: none; margin: 0; padding: 0; }
#history li { padding: 8px 0; border-top: 1px solid var(--border); font-size: .85rem; word-break: break-word; }
#history li:first-child { border-top: 0; }
.center { text-align: center; color: var(--muted); }

/* ---------- Graf teploty ---------- */
:root { --series: #1f6feb; --grid: #e6eaef; --axis: #5d6673; }
@media (prefers-color-scheme: dark) {
  :root { --series: #4493f8; --grid: #262c35; --axis: #8d96a0; }
}
.range { display: flex; gap: 4px; }
.range button {
  padding: 4px 10px; font-size: .8rem; background: transparent; color: var(--muted);
  border: 1px solid var(--border);
}
.range button[aria-pressed="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }
.chart-stats { margin: 8px 0 4px; }
.chart-box { position: relative; margin: 0 -4px; }
.chart-box svg { display: block; width: 100%; overflow: visible; touch-action: pan-y; }
.chart-box .grid { stroke: var(--grid); stroke-width: 1; }
.chart-box .axis { fill: var(--axis); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart-box .series { fill: none; stroke: var(--series); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart-box .dot { fill: var(--series); }
.chart-box .marker { fill: var(--series); stroke: var(--card); stroke-width: 2; }
.chart-box .value { fill: var(--text); font-size: 12px; font-weight: 600; font-variant-numeric: tabular-nums; }
.chart-box .crosshair { stroke: var(--axis); stroke-width: 1; stroke-dasharray: 3 3; }
.chart-box .hit { fill: transparent; cursor: crosshair; }
.chart-tip {
  position: absolute; transform: translate(-50%, calc(-100% - 12px)); pointer-events: none;
  background: var(--card); color: var(--text); border: 1px solid var(--border); border-radius: 8px;
  padding: 6px 10px; font-size: .8rem; line-height: 1.35; white-space: nowrap;
  box-shadow: 0 4px 12px rgba(0,0,0,.15); font-variant-numeric: tabular-nums;
}
.chart-table { margin-top: 8px; }
.chart-table summary { cursor: pointer; }
.chart-table table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: .85rem; font-variant-numeric: tabular-nums; }
.chart-table th, .chart-table td { text-align: left; padding: 4px 0; border-top: 1px solid var(--border); }
.chart-table th:last-child, .chart-table td:last-child { text-align: right; }

/* ---------- Lišta s novou verzí ---------- */
.update-banner {
  position: fixed; left: 50%; bottom: calc(16px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  width: min(calc(100% - 32px), 608px); display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; text-align: left; border-radius: 12px; background: var(--text); color: var(--bg);
  box-shadow: 0 6px 24px rgba(0,0,0,.25); z-index: 10;
}
.update-banner .update-action { font-weight: 600; white-space: nowrap; color: var(--accent); }
@media (prefers-color-scheme: dark) { .update-banner .update-action { color: #1f6feb; } }
footer { padding: 0 16px 96px; font-size: .75rem; }

/* ---------- Přepínač notifikací ---------- */
.switch { position: relative; display: inline-block; width: 46px; height: 26px; margin: 0; flex: none; }
.switch input { position: absolute; inset: 0; width: 100%; height: 100%; margin: 0; opacity: 0; cursor: pointer; z-index: 1; }
.switch input:disabled { cursor: not-allowed; }
.switch .slider {
  position: absolute; inset: 0; border-radius: 999px; background: var(--border); transition: background .2s;
}
.switch .slider::before {
  content: ""; position: absolute; left: 3px; top: 3px; width: 20px; height: 20px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.3); transition: transform .2s;
}
.switch input:checked + .slider { background: var(--ok); }
.switch input:checked + .slider::before { transform: translateX(20px); }
.switch input:focus-visible + .slider { outline: 2px solid var(--accent); outline-offset: 2px; }
.switch input:disabled + .slider { opacity: .5; }
label.check { display: flex; align-items: center; gap: 8px; color: var(--text); margin: 4px 0 8px; }
label.check input { width: 18px; height: 18px; margin: 0; flex: none; }
label.check:has(input:disabled) { opacity: .5; }
details summary { cursor: pointer; margin-bottom: 8px; }
.sync-status { margin: 8px 0 0; }