* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: #111;
  color: #ccc;
  font-family: 'Courier New', monospace;
  overflow: hidden;
}

#app {
  display: flex;
  height: 100vh;
}

#viewport {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: #000;
}

#display {
  image-rendering: pixelated;
  max-width: calc(100vw - 220px);
  max-height: 100vh;
}

#fps {
  position: absolute;
  top: 10px;
  left: 12px;
  font-size: 11px;
  color: #555;
  font-family: monospace;
}

#sidebar {
  width: 200px;
  padding: 14px;
  background: #1a1a1a;
  overflow-y: auto;
  border-left: 1px solid #333;
  flex-shrink: 0;
}

#sidebar h2 {
  font-size: 15px;
  margin-bottom: 16px;
  color: #6af;
  letter-spacing: 1px;
}

#sidebar h3 {
  font-size: 11px;
  margin-bottom: 6px;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 1px;
}

#sidebar section {
  margin-bottom: 18px;
}

.button-group {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.button-group button {
  background: #222;
  color: #999;
  border: 1px solid #333;
  padding: 5px 8px;
  font-family: monospace;
  font-size: 11px;
  cursor: pointer;
  text-align: left;
  transition: background 0.1s;
}

.button-group button:hover {
  background: #2a2a2a;
  color: #fff;
}

.button-group button.active {
  background: #1a2a3a;
  color: #6af;
  border-color: #4a8acf;
}

.button-group button:disabled {
  color: #444;
  cursor: default;
  border-color: #2a2a2a;
}

label {
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}

#record-status {
  font-size: 10px;
  color: #f44;
  margin-top: 4px;
  min-height: 14px;
}

#btn-record.recording {
  background: #3a1a1a;
  color: #f66;
  border-color: #f44;
}

.error {
  color: #f66;
  padding: 20px;
  text-align: center;
  font-size: 14px;
}