/* --- styling --- */
@import url("https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&display=swap");

:root {
  --neon-pink: #ff4bcb;
  --neon-cyan: #00e8ff;
  --neon-purple: #b845ff;
  --dark-bg: rgba(0, 0, 0, 0.75);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  font-family: "Orbitron", sans-serif;
  color: var(--neon-cyan);
  background: var(--dark-bg) url("modern-tokyo.jpg") center/cover fixed;
  backdrop-filter: brightness(0.6);
}

.title {
  margin-bottom: 1rem;
  font-size: 2.5rem;
  letter-spacing: 2px;
  text-shadow: 0 0 8px var(--neon-pink), 0 0 16px var(--neon-pink);
}

.board {
  display: grid;
  grid-template-columns: repeat(3, 120px);
  grid-template-rows: repeat(3, 120px);
  gap: 12px;
  padding: 1rem;
  border-radius: 16px;
  background: rgba(0, 0, 0, 0.3);
  box-shadow: 0 0 15px var(--neon-purple);
}

.cell {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 3rem;
  cursor: pointer;
  border: 2px solid var(--neon-cyan);
  border-radius: 12px;
  color: var(--neon-pink);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cell:hover {
  transform: scale(1.05);
  box-shadow: 0 0 10px var(--neon-cyan);
}

.status {
  margin: 1rem 0 0.5rem;
  font-size: 1.25rem;
  text-shadow: 0 0 6px var(--neon-cyan);
}

.btn {
  padding: 0.6rem 1.4rem;
  font-size: 1rem;
  letter-spacing: 1px;
  border: none;
  border-radius: 8px;
  color: var(--neon-purple);
  background: var(--neon-cyan);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 12px var(--neon-cyan);
}