:root {
  color-scheme: light;
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #111214;
  --muted: #6b6e76;
  --line: #e4e6ea;
  --accent: #2a78d6;
  --accent-soft: rgba(42, 120, 214, 0.12);
  --pos: #12804a;
  --neg: #c9302c;
  --warn: #b26b00;
  --bar-pos: #1baf7a;
  --bar-neg: #e34948;
  --tab-bg: rgba(255, 255, 255, 0.92);
  --radius: 16px;
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #111214;
    --card: #1c1d21;
    --text: #f2f3f5;
    --muted: #9a9ca3;
    --line: #2c2e33;
    --accent: #3987e5;
    --accent-soft: rgba(57, 135, 229, 0.18);
    --pos: #3ccf8e;
    --neg: #ff6b66;
    --warn: #f0b048;
    --bar-pos: #199e70;
    --bar-neg: #e66767;
    --tab-bg: rgba(28, 29, 33, 0.92);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, "Segoe UI", Roboto, sans-serif;
  -webkit-tap-highlight-color: transparent;
}
.page {
  max-width: 560px;
  margin: 0 auto;
  padding: calc(16px + env(safe-area-inset-top)) calc(16px + env(safe-area-inset-right))
    calc(96px + env(safe-area-inset-bottom)) calc(16px + env(safe-area-inset-left));
}
h1, h2, p { margin: 0; }
h2 { font-size: 17px; font-weight: 600; }
.page-title { font-size: 28px; font-weight: 700; margin: 8px 0 12px; }
.page-sub { margin: -6px 0 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.strong { font-weight: 600; }
.unit { font-size: 0.6em; color: var(--muted); font-weight: 500; }
.pos { color: var(--pos); }
.neg { color: var(--neg); }
.warn-text { color: var(--warn); margin-top: 6px; }
.num { text-align: right; font-variant-numeric: tabular-nums; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 12px;
}
.stack > * + * { margin-top: 10px; }
.row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.row + .row, .row + svg, svg + .row { margin-top: 8px; }
.empty { color: var(--muted); text-align: center; padding: 18px 0; }
.flash {
  background: var(--accent-soft);
  color: var(--text);
  border-radius: 12px;
  padding: 12px 14px;
  margin-bottom: 12px;
  font-size: 15px;
}

.hero { padding: 12px 4px 20px; }
.eyebrow { color: var(--muted); font-size: 15px; }
.hero-value { font-size: 40px; font-weight: 700; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.hero-changes { display: flex; gap: 18px; color: var(--muted); font-size: 15px; margin-top: 4px; }

.status-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.dot { width: 12px; height: 12px; border-radius: 50%; background: var(--muted); flex: none; }
.status-ok .dot { background: var(--pos); }
.status-paused .dot { background: var(--warn); }
.status-halted { box-shadow: inset 0 0 0 2px var(--neg); }
.status-halted .dot { background: var(--neg); }

.badge { font-size: 13px; border-radius: 999px; padding: 3px 10px; background: var(--line); white-space: nowrap; }
.badge.ok { color: var(--pos); }
.badge.warn { color: var(--warn); }
.badge.danger { color: var(--neg); }

.gauge { display: block; width: 100%; height: 8px; margin-top: 12px; }
.gauge-track { fill: var(--line); }
.gauge-fill { fill: var(--accent); }
.gauge.warn .gauge-fill { fill: var(--warn); }
.gauge.danger .gauge-fill { fill: var(--neg); }
.coin.stopped { box-shadow: inset 0 0 0 2px var(--neg); }

.btn {
  display: block;
  width: 100%;
  min-height: 48px;
  border: 0;
  border-radius: 12px;
  font: inherit;
  font-weight: 600;
  background: var(--line);
  color: var(--text);
  cursor: pointer;
}
.btn.primary { background: var(--accent); color: #fff; }
.btn.danger { background: var(--neg); color: #fff; }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.small { min-height: 44px; font-size: 15px; }
.btn:disabled { opacity: 0.5; }
.logout { margin-top: 8px; }

input[type=password] {
  width: 100%;
  min-height: 48px;
  font: inherit;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
}
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.login { padding-top: 12vh; text-align: center; }
.login h1 { margin: 12px 0 20px; font-size: 24px; }
.login form { text-align: left; }
.login-icon { border-radius: 14px; }
.error { color: var(--neg); }

.segmented { display: flex; background: var(--line); border-radius: 12px; padding: 3px; margin-bottom: 12px; }
.segmented a {
  flex: 1;
  text-align: center;
  padding: 9px 0;
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
}
.segmented a.active { background: var(--card); font-weight: 600; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12); }

.chart { position: relative; margin-top: 12px; }
.chart svg, svg.bars { display: block; width: 100%; height: 170px; touch-action: pan-y; }
svg.bars { margin-top: 12px; }
.chart-line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; }
.chart-area { fill: var(--accent-soft); stroke: none; }
.chart-cursor, .chart-zero { stroke: var(--muted); stroke-width: 1; }
.bar-pos { fill: var(--bar-pos); }
.bar-neg { fill: var(--bar-neg); }
.chart-tip {
  position: absolute;
  top: -6px;
  left: 0;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--card);
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 8px;
  white-space: nowrap;
  pointer-events: none;
}
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.grid2 .card { margin: 0; }
.grid2.inner { margin: 12px 0 8px; }
.tile-value { font-size: 22px; font-weight: 650; margin: 2px 0; font-variant-numeric: tabular-nums; }
.table { width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 15px; }
.table td { padding: 8px 0; border-top: 1px solid var(--line); }
details summary { color: var(--accent); margin-top: 8px; cursor: pointer; }

.events { list-style: none; margin: 0; padding: 0; }
.event p { margin-top: 6px; white-space: pre-line; }
.kind-kill_switch, .kind-coin_stop { box-shadow: inset 3px 0 0 var(--neg); }
.kind-snapshot_failed, .kind-login_lockout { box-shadow: inset 3px 0 0 var(--warn); }
.warn-card { box-shadow: inset 0 0 0 2px var(--warn); }
.alert-text { white-space: pre-wrap; font: inherit; font-size: 14px; margin: 8px 0 0; }

.tabbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: space-around;
  background: var(--tab-bg);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--line);
  padding: 6px env(safe-area-inset-right) calc(6px + env(safe-area-inset-bottom)) env(safe-area-inset-left);
}
.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-height: 50px;
  justify-content: center;
  color: var(--muted);
  text-decoration: none;
  font-size: 11px;
}
.tab svg { width: 26px; height: 26px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.tab.active { color: var(--accent); }