html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #25252c;
  color: #f5f5f5;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  touch-action: none; /* Crucial: stops mobile drag-bounce behavior */
}

header {
  width: 100%;
  height: 60px;
  padding: 0 20px;
  background-color: #2a2a35;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: border-box;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  z-index: 10;
}

.controls {
  display: flex;
  gap: 15px;
  align-items: center;
}

select,
button {
  padding: 8px 12px;
  border-radius: 4px;
  border: none;
  background-color: #444454;
  color: white;
  font-size: 14px;
  cursor: pointer;
}

select:focus,
button:hover {
  background-color: #cbcbd1;
}

#status-panel {
  font-size: 14px;
  color: #5e5e7e;
}

#canvas-container {
  flex: 1;
  width: 100%;
  position: relative;
  background-color: #313136;
  overflow: hidden;
}

canvas {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}