/* barvy: světlý režim, tmavý podle systému nebo podle volby v liště */
:root {
  color-scheme: light;
  --bg: #f2f4f2; --surface: #ffffff; --surface-2: #f6f8f6; --text: #17201b; --muted: #65706a;
  --line: #e1e6e2; --line-strong: #c9d1cb; --accent: #1f7a5f; --accent-hover: #17654e;
  --accent-text: #ffffff; --accent-soft: rgba(31, 122, 95, 0.10);
  --ok-bg: #dcf0e6; --ok: #17573f; --bad-bg: #f8e0da; --bad: #8f2c1a;
  --warn-bg: #f5eacb; --warn: #6b500c;
  --bar: rgba(255, 255, 255, 0.78);
  --shadow: 0 1px 2px rgba(16, 28, 22, 0.04), 0 6px 20px rgba(16, 28, 22, 0.05);
  --radius: 16px; --page: 1500px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0c100e; --surface: #141a17; --surface-2: #1a221e; --text: #e6ece8; --muted: #8e9a93;
    --line: #232d28; --line-strong: #34413a; --accent: #5ccfa6; --accent-hover: #7bdcb9;
    --accent-text: #07140e; --accent-soft: rgba(92, 207, 166, 0.12);
    --ok-bg: #163a2c; --ok: #8fe3c2; --bad-bg: #3e1d17; --bad: #f5a897;
    --warn-bg: #3a3015; --warn: #ecd189;
    --bar: rgba(12, 16, 14, 0.74);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0c100e; --surface: #141a17; --surface-2: #1a221e; --text: #e6ece8; --muted: #8e9a93;
  --line: #232d28; --line-strong: #34413a; --accent: #5ccfa6; --accent-hover: #7bdcb9;
  --accent-text: #07140e; --accent-soft: rgba(92, 207, 166, 0.12);
  --ok-bg: #163a2c; --ok: #8fe3c2; --bad-bg: #3e1d17; --bad: #f5a897;
  --warn-bg: #3a3015; --warn: #ecd189;
  --bar: rgba(12, 16, 14, 0.74);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.ico { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2;
       stroke-linecap: round; stroke-linejoin: round; flex: none; }
.muted { color: var(--muted); font-size: 14px; }

/* horní lišta */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--bar); border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: saturate(1.6) blur(14px); backdrop-filter: saturate(1.6) blur(14px);
}
.topbar-inner {
  max-width: var(--page); margin: 0 auto; min-height: 64px; padding: 10px 24px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px 18px;
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 700;
         letter-spacing: -0.01em; }
.logo {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px;
  background: var(--accent); color: var(--accent-text);
}
.logo.big { width: 52px; height: 52px; border-radius: 14px; }
.logo.big .ico { width: 26px; height: 26px; }
.strip { flex: 1; min-width: 0; display: flex; align-items: center; gap: 14px; }
.seen { color: var(--muted); font-size: 13px; white-space: nowrap; }
.summary {
  display: flex; gap: 8px; min-width: 0; overflow-x: auto; scrollbar-width: none;
  mask-image: linear-gradient(to right, #000 calc(100% - 24px), transparent);
}
.summary::-webkit-scrollbar { display: none; }
.chip {
  display: inline-flex; align-items: baseline; gap: 7px; flex: none; white-space: nowrap;
  padding: 4px 12px; border-radius: 999px; font-size: 13px; color: var(--muted);
  background: var(--surface-2); border: 1px solid var(--line);
}
.chip b { color: var(--text); font-size: 14px; font-weight: 650; font-variant-numeric: tabular-nums; }
.chip.stale b { color: var(--muted); }
.chip.bad { background: var(--bad-bg); border-color: transparent; color: var(--bad); }
.chip.bad b { color: var(--bad); }
.actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.user { color: var(--muted); font-size: 14px; margin-right: 4px; }

.icon-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-width: 38px; height: 38px; padding: 0 10px; border-radius: 10px;
  background: transparent; color: var(--text); border: 1px solid var(--line);
}
.icon-btn:hover:not(:disabled) { background: var(--surface-2); border-color: var(--line-strong); }
.icon-btn .sun { display: none; }
:root[data-theme="dark"] .icon-btn .sun { display: block; }
:root[data-theme="dark"] .icon-btn .moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-btn .sun { display: block; }
  :root:not([data-theme="light"]) .icon-btn .moon { display: none; }
}

.pill {
  display: inline-flex; align-items: center; gap: 7px; white-space: nowrap;
  padding: 4px 12px; border-radius: 999px; font-size: 13px; font-weight: 650;
}
.pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.pill.ok { background: var(--ok-bg); color: var(--ok); }
.pill.bad { background: var(--bad-bg); color: var(--bad); }
.pill.warn { background: var(--warn-bg); color: var(--warn); }
#status.ok::before { box-shadow: 0 0 0 3px var(--accent-soft); animation: pulse 2.4s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.45; } }
@media (prefers-reduced-motion: reduce) { #status.ok::before { animation: none; } }

/* obsah */
.page { max-width: var(--page); margin: 0 auto; padding: 28px 24px 64px; }
.layout { display: grid; gap: 28px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 1100px) {
  .layout {
    grid-template-columns: minmax(0, 1fr) minmax(380px, 460px);
    grid-template-areas: "sensors sensors" "switches events" "settings events";
    grid-template-rows: auto auto 1fr; align-items: start;
  }
  .area-sensors { grid-area: sensors; }
  .area-switches { grid-area: switches; }
  .area-settings { grid-area: settings; }
  .area-events { grid-area: events; position: sticky; top: 92px; }
  .events { max-height: calc(100vh - 150px); overflow-y: auto; }
}
.section-head { display: flex; align-items: baseline; gap: 12px; margin: 0 2px 12px; }
h1 { font-size: 26px; margin: 0; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 17px; margin: 0; font-weight: 650; letter-spacing: -0.01em; }
.section-head .muted { font-size: 13px; }
.banner { background: var(--bad-bg); color: var(--bad); padding: 12px 16px;
          border-radius: 12px; margin: 0 0 20px; font-weight: 500; }

/* teploty */
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px 16px; box-shadow: var(--shadow);
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover { border-color: var(--line-strong); }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.card .name { font-weight: 600; color: var(--muted); font-size: 14px; overflow-wrap: anywhere; }
.card .age { color: var(--muted); font-size: 12px; white-space: nowrap; }
.card .value { font-size: 42px; font-weight: 700; line-height: 1.1; letter-spacing: -0.03em;
               font-variant-numeric: tabular-nums; margin: 8px 0 0; }
.card.stale .value { color: var(--muted); }
.card.alert { border-color: var(--bad); }
.card.alert .value { color: var(--bad); }
.card svg { display: block; width: 100%; height: 56px; margin: 14px 0 8px; }
.card polyline { fill: none; stroke: var(--accent); stroke-width: 2;
                 stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.card polygon { fill: var(--accent); opacity: 0.12; stroke: none; }
.card.alert polyline { stroke: var(--bad); }
.card.alert polygon { fill: var(--bad); }
.card .range { font-size: 13px; }

/* seznamy */
.rows { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
        box-shadow: var(--shadow); overflow: hidden; }
.row { display: flex; align-items: center; gap: 12px; padding: 14px 20px; min-height: 60px; }
.row + .row, #limits + .row, #limits .row:first-child { border-top: 1px solid var(--line); }
.row[hidden] + .row { border-top: 0; }
.row .name { font-weight: 600; flex: 1; min-width: 0; overflow-wrap: anywhere; }
.row .note { flex-basis: 100%; }
.row.wrap { flex-wrap: wrap; }
.empty { padding: 18px 20px; color: var(--muted); }

button {
  font: inherit; font-size: 14px; font-weight: 600; padding: 8px 16px; border-radius: 10px;
  cursor: pointer; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-text);
  min-width: 104px; transition: background 0.15s, border-color 0.15s, color 0.15s;
}
button:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
button.off { background: transparent; color: var(--accent); border-color: var(--line-strong); }
button.off:hover:not(:disabled) { background: var(--accent-soft); border-color: var(--accent); }
button.icon-btn { color: var(--text); border-color: var(--line); min-width: 38px; }
button.icon-btn:hover:not(:disabled) { background: var(--surface-2); border-color: var(--line-strong); }
button:disabled { opacity: 0.5; cursor: default; }
button:focus-visible, input:focus-visible { outline: 3px solid var(--accent-soft); outline-offset: 1px;
                                            border-color: var(--accent); }

.event { display: grid; grid-template-columns: 7.5em 1fr; gap: 14px; padding: 11px 20px; font-size: 14px; }
.event + .event { border-top: 1px solid var(--line); }
.event time { color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }

/* nastavení upozornění */
.settings .row { gap: 10px; }
.settings .inline { display: inline-flex; align-items: center; gap: 10px; }
.settings input.num {
  font: inherit; width: 5.4em; padding: 7px 10px; border-radius: 10px; text-align: right;
  border: 1px solid var(--line-strong); background: var(--surface-2); color: var(--text);
  font-variant-numeric: tabular-nums;
}
.settings input.num.invalid { border-color: var(--bad); background: var(--bad-bg); }
.settings input[type="checkbox"] {
  appearance: none; -webkit-appearance: none; flex: none; position: relative; margin: 0;
  width: 44px; height: 26px; border-radius: 999px; cursor: pointer;
  background: var(--line-strong); transition: background 0.15s;
}
.settings input[type="checkbox"]::before {
  content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px;
  border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
  transition: transform 0.15s;
}
.settings input[type="checkbox"]:checked { background: var(--accent); }
.settings input[type="checkbox"]:checked::before { transform: translateX(18px); }
.settings .limit { background: var(--surface-2); }
.settings .limit .name { font-weight: 500; }
.settings .note.bad { color: var(--bad); }

/* přihlášení */
.login-page {
  background:
    radial-gradient(900px 500px at 15% -10%, var(--accent-soft), transparent 70%),
    radial-gradient(700px 420px at 100% 110%, var(--accent-soft), transparent 70%),
    var(--bg);
}
.login { display: grid; place-items: center; min-height: calc(100vh - 65px); padding: 32px 16px 12vh; }
.login-card {
  width: 100%; max-width: 410px; padding: 36px 32px 32px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 20px;
  box-shadow: 0 1px 2px rgba(16, 28, 22, 0.05), 0 24px 60px rgba(16, 28, 22, 0.10);
}
.login-card h1 { margin-top: 18px; }
.login-card .lead { margin: 4px 0 26px; }
.login form { display: grid; gap: 16px; }
.login label { display: grid; gap: 6px; font-size: 13px; font-weight: 600; color: var(--muted); }
.login input {
  font: inherit; font-size: 15px; font-weight: 400; padding: 11px 13px; border-radius: 10px; width: 100%;
  border: 1px solid var(--line-strong); background: var(--surface-2); color: var(--text);
}
.login input.code { font-size: 20px; letter-spacing: 0.3em; text-align: center; font-variant-numeric: tabular-nums; }
.login button { margin-top: 6px; padding: 12px 16px; font-size: 15px; }
.login .banner { margin: 0; }

/* telefon */
@media (max-width: 760px) {
  .topbar-inner { padding: 10px 16px; gap: 10px 10px; min-height: 0; }
  .brand { order: 1; }
  #status { order: 2; }
  .actions { order: 3; }
  .strip { order: 4; flex-basis: 100%; gap: 10px; }
  .user, .logout span { display: none; }
  .page { padding: 20px 16px 48px; }
  .layout { gap: 24px; }
  .row { padding: 12px 16px; }
  .event { grid-template-columns: 1fr; gap: 0; padding: 10px 16px; }
  .card .value { font-size: 36px; }
  .login-card { padding: 28px 22px 24px; }
}
@media (max-width: 420px) {
  .brand > span:last-child { display: none; }
}