html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100dvh;
    background-color: #000;
    overflow: hidden;
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;

    /* Ensure iPhone safe-area compatibility */
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

#game-container {
    width: 100%;
    height: 100vh;
    box-sizing: border-box;
    position: relative;
}

#download-banner {
  background-color: #1abc9c;
  color: #fff;
  font-size: 14px;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999; /* ensure it's on top */
  padding: 5px 10px;
  display: none; /* hidden by default */
  align-items: center;
}

#download-banner .banner-link {
  flex: 1;
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: center;
}

#download-banner .download-text {
  flex: 1;
  text-align: center;
}

#download-banner .close-banner {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  padding: 0 5px;
}