/* reset & full-viewport */
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  font-family: sans-serif;
}

/* Controls bar */
#hueControls {
  display: flex;
  gap: 12px;
  padding: 12px;
  background: #dddddd;
  align-items: center;
}
#hueControls label {
  display: flex;
  flex-direction: column;
  font-size: 14px;
}
#hehe label {
  display: flex;
  flex-direction: column;
  font-size: 8px;
}
#hueControls input[type="range"] {
  width: 166px;
  margin-top: 6px;
}
#hueControls span {
  margin-left: 3px;
  font-weight: bold;
}

/* File input styling */
#imgInput {
  position: absolute;
  top: 3px;
  right: 0px;
  padding: 0px 0px;
  font-size: 12px;
}

/* Canvas: centered, natural size up to viewport */
#canvas {
  display: block;
  margin: 0 auto;
  background: white;
  max-width: 100vw;
  max-height: calc(100vh - 90px); /* leave room for controls + file input */
}