* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Avenir Next Condensed", "Trebuchet MS", sans-serif;
  background: linear-gradient(180deg, #14532d 0%, #052e16 55%, #022c22 100%);
  color: #f0fdf4;
}
.wrap {
  max-width: 460px;
  margin: 0 auto;
  padding: 16px;
}
.topnav {
  margin-bottom: 10px;
  color: #bbf7d0;
}
.topnav a {
  color: #facc15;
  text-decoration: none;
}
.topnav a:hover { text-decoration: underline; }
h1 {
  margin: 6px 0 4px;
  font-size: 1.7rem;
}
.subtitle {
  margin: 0 0 12px;
  color: #d1fae5;
}
.hud {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}
.hud > div,
.controls {
  background: rgba(20, 83, 45, 0.58);
  border: 1px solid rgba(187, 247, 208, 0.2);
  border-radius: 16px;
}
.hud > div {
  padding: 8px;
  text-align: center;
}
#game {
  width: 100%;
  height: auto;
  border-radius: 18px;
  border: 1px solid rgba(187, 247, 208, 0.24);
  background: #166534;
  touch-action: none;
}
.controls {
  margin-top: 12px;
  padding: 12px;
  display: grid;
  gap: 10px;
}
button {
  border: 0;
  border-radius: 12px;
  padding: 12px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  background: #facc15;
  color: #1f2937;
}
button:hover { background: #fde047; }
.msg {
  margin: 0;
  min-height: 1.2rem;
  color: #fef08a;
}