@import url("https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700&display=swap");

body {
  font-family: "Orbitron", sans-serif;
  text-align: center;
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
  background: black;
  overflow: hidden;
  position: relative;
}

/* Moving cyberpunk neon grid background */
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  height: 200%;
  width: 200%;
  background:
    linear-gradient(#0ff 1px, transparent 1px),
    linear-gradient(90deg, #0ff 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 10s linear infinite;
  opacity: 0.15;
  z-index: 0;
}
/* Big background text */
body::after {
  content: "TIC   TAC   TOE";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 15vw;
  font-weight: bold;
  color: #0ff;
  opacity: 1;
  text-shadow:
    0 0 10px #0ff,
    0 0 20px #0ff,
    0 0 40px #0ff,
    0 0 80px #0ff;
  animation: glowMove 6s ease-in-out infinite alternate;
  white-space: nowrap;
  z-index: 0;
}

/* Pulse animation when winner found */
body.pulse-bg::after {
  animation: pulseText 0.8s ease-in-out 3;
}

@keyframes pulseText {
  0% { opacity: 0.05; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.15; transform: translate(-50%, -50%) scale(1.05); }
  100% { opacity: 0.05; transform: translate(-50%, -50%) scale(1); }
}

/* Win popup styling */
#win-popup {
  position: fixed;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

#win-popup-content {
  background: rgba(0, 255, 255, 0.1);
  padding: 30px 50px;
  font-size: 2rem;
  font-weight: bold;
  color: #0ff;
  border-radius: 12px;
  box-shadow: 0 0 20px #0ff, 0 0 40px #0ff inset;
  text-shadow: 0 0 10px #0ff, 0 0 20px #0ff;
  animation: fadeInScale 0.4s ease forwards;
}

@keyframes fadeInScale {
  from { transform: scale(0.8); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-50px, -50px); }
}

@keyframes glowMove {
  0% { transform: translate(-50%, -50%) scale(1); opacity: 0.05; }
  100% { transform: translate(-50%, -50%) scale(1.05); opacity: 0.08; }
}

.game-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px;
}

/* Scoreboard */
#scoreboard {
  background: rgba(0, 255, 255, 0.05);
  border-radius: 12px;
  padding: 10px 20px;
  box-shadow: 0 0 25px #0ff;
  margin-bottom: 15px;
}

#scoreboard td {
  font-size: 18px;
  font-weight: bold;
}

#scoreboard .score {
  font-size: 28px;
}

#scoreboard .score#player1 {
  color: #ff00ff;
  text-shadow: 0 0 10px #ff00ff;
}

#scoreboard .score#player2 {
  color: #00ffff;
  text-shadow: 0 0 10px #00ffff;
}

/* Board */
#tic-tac-toe {
  border-spacing: 0;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  box-shadow: 0 0 40px #0ff;
}

#tic-tac-toe td {
  border: 2px solid rgba(0, 255, 255, 0.3);
  height: 90px;
  width: 90px;
  text-align: center;
  font: bold 48px "Orbitron", sans-serif;
  color: #fff;
  transition: background 0.2s ease, transform 0.2s ease;
}

#tic-tac-toe td:hover {
  background: rgba(0, 255, 255, 0.1);
  transform: scale(1.05);
}

/* Marks */
#tic-tac-toe td.X {
  color: #ff00ff;
  text-shadow: 0 0 15px #ff00ff, 0 0 30px #ff00ff;
}

#tic-tac-toe td.O {
  color: #00ffff;
  text-shadow: 0 0 15px #00ffff, 0 0 30px #00ffff;
}

/* Buttons */
button {
  background: linear-gradient(135deg, #ff00ff, #ff0099);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 0 15px #ff00ff;
}

button:hover {
  box-shadow: 0 0 20px #ff00ff;
  transform: scale(1.05);
}

#popup-message {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  background: rgba(0, 255, 255, 0.1);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 2rem;
  font-weight: bold;
  padding: 20px 40px;
  border-radius: 12px;
  box-shadow: 0 0 20px #0ff, 0 0 40px #0ff inset;
  text-shadow: 0 0 10px #0ff, 0 0 20px #0ff;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 999;
}

#popup-message.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}