:root {
  color-scheme: dark;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  background: #1c1f26;
  color: #e8eaf0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  user-select: none;
}

#app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 48px;
  padding: 24px;
  width: 100%;
  max-width: 420px;
}

.score-card {
  text-align: center;
}

#score {
  font-size: 72px;
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.score-label {
  display: block;
  margin-top: 6px;
  font-size: 16px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #8b93a7;
}

#tap-btn {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: none;
  background: radial-gradient(circle at 30% 30%, #5b8cff, #2f54eb);
  color: #fff;
  font-size: 34px;
  font-weight: 800;
  letter-spacing: 4px;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(47, 84, 235, 0.45);
  transition: transform 0.06s ease;
  touch-action: manipulation;
}

#tap-btn:active {
  transform: scale(0.92);
}