body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  font-family: Arial, sans-serif;
  background: #f9f9f9;
  color: #111;
}

* {
  box-sizing: border-box;
}

#hex-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  height: 650px;                /* increase this when new tiles are added at the bottom */
  margin: 0 auto;
  border: 0 solid #ccc;
  background: #ffffff;
  overflow: hidden;
}


svg {
  width: 100%;
  height: 100%;
  display: block;
  overflow: hidden;
}

.hex:hover {
  stroke: #000;
  stroke-width: 2;
  cursor: pointer;
}

#tooltip {
  position: absolute;
  background: #333;
  color: #fff;
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 14px;
  pointer-events: none;
  visibility: hidden;
  z-index: 1000;
}

#popup {
  position: absolute;
  padding: 15px;
  background: #222;
  color: #fff;
  border-radius: 6px;
  box-shadow: 0 0 10px rgba(0,0,0,0.2);
  max-width: 250px;
  display: none;
  z-index: 10;
}

#popup h3 {
  margin: 0 0 10px 0;
}

#popup button {
  margin-top: 10px;
  background: rgba(255,255,255,0.2);
  color: #fff;
  border: none;
  padding: 5px 10px;
  cursor: pointer;
}

#popup button:hover {
  background: rgba(255,255,255,0.4);
}