:root {
  --bg: #0b1220;
  --bg-soft: #131d31;
  --line: #24304a;
  --text: #e8eefc;
  --muted: #8ea0c0;
  --accent: #38bdf8;
  --accent-dim: #1f6f96;
  --power: #fbbf24;
  --hr: #fb7185;
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #f87171;
  --radius: 14px;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
  overscroll-behavior: none;
}

button, input, select {
  font: inherit;
  color: inherit;
}

.muted { color: var(--muted); }

/* ---------- Anmeldung ---------- */

.lock {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.lock-card {
  width: min(360px, 100%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.lock-card h1 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: .02em;
}

.lock-card p { margin: 0; }

.lock-card input {
  padding: 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #0a1120;
}

.lock-card input:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.error { color: var(--err); font-size: .9rem; }

/* ---------- Layout ---------- */

.app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: calc(env(safe-area-inset-top) + 10px) 12px calc(env(safe-area-inset-bottom) + 10px);
}

.bar {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.bar-row {
  display: flex;
  align-items: stretch;
  gap: 8px;
}

.users {
  display: flex;
  gap: 8px;
  flex: 1;
  min-width: 0;
}

.levels {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: 6px;
  flex: 1;
  min-width: 0;
}

/* ---------- Buttons ---------- */

button {
  border: 1px solid var(--line);
  background: var(--bg-soft);
  border-radius: 12px;
  padding: 10px 14px;
  cursor: pointer;
  touch-action: manipulation;
  transition: background .12s, border-color .12s, color .12s, transform .05s;
}

button:active { transform: scale(.97); }

button:disabled { opacity: .45; cursor: default; }

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #04121e;
  font-weight: 650;
}

button.ghost { background: transparent; }
button.small { padding: 8px 12px; font-size: .85rem; }

.chip {
  flex: 1;
  padding: 12px 10px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chip[aria-checked="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #04121e;
}

.level {
  padding: 12px 0;
  font-size: 1.15rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.level[aria-checked="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: #04121e;
}

.stop {
  min-width: 96px;
  background: #7f1d1d;
  border-color: #b91c1c;
  font-weight: 700;
  letter-spacing: .04em;
}

.stop:not(:disabled):hover { background: #991b1b; }

.sensor {
  flex: 1;
  padding: 10px;
  font-size: .82rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sensor[data-state="connected"] { color: var(--ok); border-color: var(--accent-dim); }

/* Kurzes Aufleuchten bei jedem empfangenen Messwert = Lebenszeichen. */
.sensor.pulse {
  background: #14532d;
  border-color: var(--ok);
  color: #d1fae5;
}
.sensor[data-state="connecting"] { color: var(--warn); }
.sensor[data-state="error"] { color: var(--err); }

/* ---------- Messwerte ---------- */

.metrics {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  min-height: 0;
}

@media (orientation: portrait) {
  .metrics {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(3, minmax(0, 1fr));
  }
}

.metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px;
  min-height: 0;
}

.metric-label {
  font-size: clamp(.75rem, 2.2vw, .95rem);
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--muted);
}

.metric-value {
  font-size: clamp(2.6rem, 13vmin, 7rem);
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.metric[data-kind="cadence"] {
  position: relative;
  padding-bottom: 34px;
}

.metric[data-kind="cadence"] .metric-value { color: var(--accent); }

/* Rollendes Balkendiagramm: 30 Sekunden breit, zwei Balken je Sekunde. */
.metric-chart {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 28px;
  display: block;
  border-bottom-left-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
}
.metric[data-kind="power"] .metric-value { color: var(--power); }
.metric[data-kind="hr"] .metric-value { color: var(--hr); }

.metric-value {
  transition: opacity .3s;
}

/* Wert ist noch da, aber der Sensor hat länger nichts Neues gemeldet. */
.metric-value.stale {
  opacity: .5;
}

.metric-unit {
  font-size: clamp(.7rem, 2vw, .9rem);
  color: var(--muted);
}

/* ---------- Fußzeile ---------- */

.foot {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.foot-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.timer {
  font-variant-numeric: tabular-nums;
  font-size: 1.25rem;
  font-weight: 650;
  min-width: 5.2em;
}

.state {
  flex: 1;
  color: var(--muted);
  font-size: .85rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sync {
  font-size: .78rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
  white-space: nowrap;
}

.sync[data-state="ok"] { color: var(--ok); border-color: var(--ok); }
.sync[data-state="pending"] { color: var(--warn); border-color: var(--warn); }
.sync[data-state="offline"] { color: var(--err); border-color: var(--err); }

/* Hinweis auf einen neuen Deploy - nur nach Klick wird neu geladen. */
.update-hint {
  align-self: center;
  padding: 6px 14px;
  font-size: .78rem;
  border-radius: 999px;
  border-color: var(--accent);
  color: var(--accent);
  background: #0d2436;
}

/* Build-Stempel: bewusst klein und unauffällig. */
.build {
  font-size: .68rem;
  line-height: 1.2;
  color: #4d6187;
  text-align: center;
  letter-spacing: .04em;
}

/* ---------- Overlays ---------- */

.sheet {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 20;
  display: flex;
  flex-direction: column;
  padding: calc(env(safe-area-inset-top) + 12px) 14px calc(env(safe-area-inset-bottom) + 14px);
  overflow-y: auto;
}

.sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.sheet-head h2 { margin: 0; font-size: 1.3rem; }

.sheet-body { flex: 1; min-height: 0; }

.filters {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 14px;
}

.select {
  display: flex;
  align-items: center;
  gap: 10px;
}

.select span { color: var(--muted); font-size: .85rem; }

.select select {
  flex: 1;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
}

table.summary {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
}

table.summary th,
table.summary td {
  text-align: right;
  padding: 8px 6px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

table.summary th:first-child,
table.summary td:first-child { text-align: left; }

table.summary thead th { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; }

table.summary tr.total td { font-weight: 700; border-top: 2px solid var(--line); }

.stats-block h3 {
  font-size: .95rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin: 20px 0 6px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.summary-grid div {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
}

.summary-grid dt { color: var(--muted); font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; }
.summary-grid dd { margin: 4px 0 0; font-size: 1.4rem; font-weight: 650; font-variant-numeric: tabular-nums; }

/* ---------- Toast ---------- */

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom) + 18px);
  transform: translateX(-50%);
  background: #1e293b;
  border: 1px solid var(--line);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 999px;
  z-index: 40;
  max-width: 90vw;
  text-align: center;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .45);
}

/* Querformat auf kleinen Displays: Kopfzeile kompakter */
@media (orientation: landscape) and (max-height: 480px) {
  .level { padding: 8px 0; font-size: 1rem; }
  .chip { padding: 8px; }
  .metric-value { font-size: clamp(2.2rem, 16vmin, 5rem); }
}