:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --border: #e2e4e9;
  --text: #1a1d24;
  --text-muted: #6b7280;
  --accent: #2563eb;
  --green: #16a34a;
  --amber: #d97706;
  --red: #dc2626;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --surface: #1d2027;
    --border: #2c303a;
    --text: #e7e9ee;
    --text-muted: #9096a3;
    --accent: #5b8def;
    --green: #34d17c;
    --amber: #f0a63c;
    --red: #ef5a5a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

h1 {
  font-size: 1.25rem;
  margin: 0;
}

.updated {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.dummy-banner {
  background: color-mix(in srgb, var(--amber) 16%, var(--surface));
  border-bottom: 1px solid color-mix(in srgb, var(--amber) 45%, transparent);
  color: var(--amber);
  font-size: 0.82rem;
  font-weight: 600;
  text-align: center;
  padding: 0.5rem 1rem;
}

.hidden { display: none !important; }

main#cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  padding: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.loading, .error, .empty {
  color: var(--text-muted);
  padding: 0.5rem 0;
}

.error { color: var(--red); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem 1.2rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}

.card-title { font-weight: 600; font-size: 1.05rem; }
.card-sub { font-size: 0.78rem; color: var(--text-muted); margin-top: 0.15rem; }

.connected-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
  margin-top: 0.3rem;
}

.connected-dot.on {
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
}

.battery-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.6rem;
}

.battery-pct { font-size: 1.9rem; font-weight: 700; }

.battery-bar {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--border);
  overflow: hidden;
}

.battery-bar-fill {
  height: 100%;
  background: var(--green);
  border-radius: 999px;
}

.battery-bar-fill.low { background: var(--amber); }
.battery-bar-fill.critical { background: var(--red); }

.status-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
  margin-bottom: 0.6rem;
}

.status-badge.mowing,
.status-badge.charging {
  background: color-mix(in srgb, var(--green) 18%, transparent);
  color: var(--green);
  border-color: color-mix(in srgb, var(--green) 45%, transparent);
}

.status-badge.going_home,
.status-badge.leaving,
.status-badge.paused {
  background: color-mix(in srgb, var(--amber) 18%, transparent);
  color: var(--amber);
  border-color: color-mix(in srgb, var(--amber) 45%, transparent);
}

.status-badge.error,
.status-badge.fatal_error,
.status-badge.stopped {
  background: color-mix(in srgb, var(--red) 18%, transparent);
  color: var(--red);
  border-color: color-mix(in srgb, var(--red) 45%, transparent);
}

.error-line {
  font-size: 0.8rem;
  color: var(--red);
  margin-bottom: 0.5rem;
}

.card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  margin-top: 0.9rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--border);
}

.card-meta a {
  color: var(--accent);
  text-decoration: none;
}

.card-meta a:hover { text-decoration: underline; }