* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

#game {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  max-width: 500px;
  margin: 0 auto;
}

#enemy-zone {
  flex: 4;
  display: flex;
  align-items: center;
  justify-content: center;
}

#info-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
}

#hand {
  flex: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  overflow-x: auto;
}

#hand .card {
  width: 80px;
  cursor: pointer;
  transition: transform 0.15s;
}

#hand .card.selected {
  transform: translateY(-20px);
}

#hand .card.no-energy {
  opacity: 0.5;
}

#overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
}

#overlay[hidden] {
  display: none;
}