* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0f172a;
  color: #e2e8f0;
  padding: 16px;
}

header {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

header h1 {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
}

.connection {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.connection input {
  flex: 1;
  min-width: 220px;
  padding: 8px 10px;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 6px;
  color: #e2e8f0;
  font-family: monospace;
}

button {
  padding: 8px 14px;
  border: 1px solid #334155;
  background: #1e293b;
  color: #e2e8f0;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
}

button:hover { background: #334155; }
button.primary { background: #2563eb; border-color: #2563eb; }
button.primary:hover { background: #1d4ed8; }

.status {
  padding: 4px 10px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}
.status.online  { background: #14532d; color: #86efac; }
.status.offline { background: #7f1d1d; color: #fca5a5; }

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
}

.lane {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 12px;
}

.lane h2 {
  margin: 0 0 10px;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #94a3b8;
}

.button-card {
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 10px;
}

.button-card:last-child { margin-bottom: 0; }

.button-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.role {
  font-weight: 700;
  font-size: 13px;
  min-width: 60px;
}

.mac {
  flex: 1;
  padding: 6px 8px;
  font-family: monospace;
  font-size: 12px;
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 4px;
  color: #e2e8f0;
}

.press {
  width: 100%;
  padding: 16px;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.press-start { background: #166534; border-color: #166534; }
.press-start:hover { background: #15803d; }
.press-stop { background: #991b1b; border-color: #991b1b; }
.press-stop:hover { background: #b91c1c; }
.press:active { transform: scale(0.98); }

.battery label {
  display: block;
  font-size: 12px;
  color: #94a3b8;
  margin-bottom: 4px;
}

.battery input[type="range"] { width: 100%; }

.controls {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 12px;
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.controls label { font-size: 13px; display: flex; align-items: center; gap: 6px; }
.controls input[type="number"] {
  width: 80px;
  padding: 6px 8px;
  background: #0f172a;
  border: 1px solid #334155;
  border-radius: 4px;
  color: #e2e8f0;
}

.log-wrap {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: 12px;
}

.log-wrap h3 { margin: 0 0 8px; font-size: 13px; color: #94a3b8; }

#log {
  margin: 0;
  max-height: 260px;
  overflow-y: auto;
  font-family: monospace;
  font-size: 11px;
  white-space: pre-wrap;
  color: #cbd5e1;
}