:root {
  color-scheme: light dark;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: #f5f6ff;
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
  padding: 2rem 1rem 3rem;
}

h1 {
  margin: 0;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: clamp(1.5rem, 4vw, 2.75rem);
  text-align: center;
}

p {
  margin: 0;
  text-align: center;
  max-width: 480px;
  color: var(--text-secondary);
}

#game-wrapper {
  background: rgba(10, 15, 35, 0.85);
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

#board {
  background: #010101;
  border-radius: 12px;
  width: min(90vw, 420px);
  height: min(90vw, 420px);
  border: 2px solid rgba(255, 255, 255, 0.15);
}

#scoreboard {
  display: flex;
  gap: 1rem;
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

#panel-link {
  margin-top: auto;
  text-align: center;
  font-size: 1.05rem;
}

#panel-link a {
  color: #8cdcff;
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, color 0.3s ease;
}

#panel-link a:hover {
  color: #b2f7ff;
  border-color: currentColor;
}

button {
  cursor: pointer;
  padding: 0.6rem 1.4rem;
  border: none;
  border-radius: 999px;
  background: linear-gradient(120deg, #3e7bff, #8c56ff);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  box-shadow: 0 8px 20px rgba(62, 123, 255, 0.35);
  transition: transform 0.15s ease, filter 0.3s ease;
}

button:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

button:active {
  transform: translateY(0);
  filter: brightness(0.95);
}