:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4f;
  --text: #e8edf4;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --danger: #ef4444;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

header {
  padding: 2rem 1.5rem 1rem;
  max-width: 1100px;
  margin: 0 auto;
}

header h1 {
  margin: 0;
  font-size: 1.75rem;
}

.subtitle {
  color: var(--muted);
  margin: 0.25rem 0 0;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem 3rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

h2 {
  margin: 0 0 1rem;
  font-size: 1.1rem;
}

label {
  display: block;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
}

input, select, button {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

button[type="submit"],
#refresh-btn {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  cursor: pointer;
  font-weight: 600;
  margin-top: 0.5rem;
}

button[type="submit"]:hover,
#refresh-btn:hover {
  background: var(--accent-hover);
}

.link {
  background: none;
  border: none;
  color: var(--accent);
  width: auto;
  display: inline;
  padding: 0;
  margin-left: 1rem;
  cursor: pointer;
  font-size: 0.875rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-between;
  align-items: flex-end;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
}

.filters label {
  margin: 0;
  min-width: 120px;
}

.filters button {
  width: auto;
  min-width: 100px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  text-align: left;
  padding: 0.65rem 0.5rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.8rem;
}

.hidden {
  display: none !important;
}

.error {
  color: var(--danger);
  font-size: 0.875rem;
  margin-top: 0.75rem;
}

.empty {
  color: var(--muted);
  font-size: 0.9rem;
}

.muted {
  color: var(--muted);
  font-size: 0.875rem;
}

.device-settings-panel {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.device-settings-panel h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
}

.toggle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.5rem 1rem;
}

.toggle-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text);
  margin: 0;
}

.toggle-item input {
  width: auto;
  margin: 0;
}

.telemetry-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.telemetry-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
}

.telemetry-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: baseline;
  margin-bottom: 0.35rem;
}

.telemetry-payload {
  font-size: 0.8rem;
  word-break: break-all;
  color: var(--muted);
}

.filters.inline {
  margin-bottom: 1rem;
}

@media (max-width: 640px) {
  .toolbar { flex-direction: column; align-items: stretch; }
  .filters { flex-direction: column; }
  .filters label, .filters button { width: 100%; }
}