html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  font-family: "Inter", Arial, sans-serif;
  background: #000;
  color: white;
}

#topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(0,0,0,0.85);
  color: #fff;
  padding: 10px 15px;
  z-index: 10;
  line-height: 1.3;
}

#topbar h2 {
  margin: 0 0 4px 0;
  font-weight: 600;
  font-size: 16px;
}

#controls {
  margin-top: 6px;
}

button {
  background: #222;
  color: #eee;
  border: 1px solid #555;
  border-radius: 14px;
  padding: 3px 10px;
  margin: 0 4px 4px 0;
  cursor: pointer;
  font-size: 13px;
  transition: 0.2s background;
}
button:hover {
  background: #444;
}

#cityInput {
  padding: 3px 8px;
  border-radius: 10px;
  border: none;
  outline: none;
  font-size: 13px;
  margin-left: 8px;
}

#searchBtn {
  margin-left: 4px;
}

#status {
  margin-left: 10px;
  color: #aaa;
}

#canvas-holder {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: 1;
}

canvas {
  display: block;
  position: absolute;
  top: 0; left: 0;
}