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

body {
  margin: 0;
  padding: 2rem;
  background-image: url("asset/Tic-Toe-Game-BG.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  text-align: center;
  font-family: "Segoe UI", "Arial", sans-serif;
}

main > h1 {
  font-size: 8vmin;
  margin-bottom: 0.5rem;
  color: white;
  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
  font-weight: 600;
  letter-spacing: 1px;
}

main > p {
  font-size: 3vmin;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  font-weight: 300;
}

.container {
  width: 100%;
  max-width: 70vmin;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.game {
  margin-top: 2vmin;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1.8vmin;
  width: 100%;
}

.box {
  border-radius: 1.5vmin;
  background-color: white;
  border: none;
  width: 100%;
  max-width: 20vmin;
  height: 20vmin;
  font-size: 8vmin;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.box:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
}

.box:active {
  transform: translateY(0);
}

.box:disabled {
  cursor: not-allowed;
}

.result {
  border-radius: 1.5vmin;
  border: none;
  margin-top: 3vmin;
  background-color: white;
  color: #e74c3c;
  padding: 1.8rem 2.5rem;
  font-size: 3.2vmin;
  font-weight: 600;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
  display: none;
}

.result.show {
  display: block;
}

.dark {
  color: #27ae60;
  background-color: #e8faf1;
}

.light {
  color: #e74c3c;
  background-color: #fdecea;
}

.resetGame {
  padding: 14px 35px;
  font-size: 2.8vmin;
  border: none;
  border-radius: 50px;
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
  cursor: pointer;
  margin-top: 2.5rem;
  font-weight: 600;
  box-shadow: 0 5px 15px rgba(245, 87, 108, 0.3);
  transition: all 0.3s ease;
}

.resetGame:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(245, 87, 108, 0.4);
}

.resetGame:active {
  transform: translateY(0);
}

@media (max-width: 480px) {
  body {
    padding: 1rem;
  }

  main > h1 {
    font-size: 10vmin;
    margin-bottom: 0.3rem;
  }

  main > p {
    font-size: 4vmin;
    margin-bottom: 1.5rem;
  }

  .container {
    max-width: 90vmin;
  }

  .game {
    gap: 2vmin;
  }

  .box {
    max-width: 26vmin;
    height: 26vmin;
    font-size: 10vmin;
    border-radius: 2vmin;
  }

  .result {
    padding: 1.2rem 1.5rem;
    font-size: 4vmin;
    margin-top: 2vmin;
  }

  .resetGame {
    padding: 12px 28px;
    font-size: 3.5vmin;
    margin-top: 2rem;
  }
}

@media (min-width: 481px) and (max-width: 768px) {
  body {
    padding: 1.5rem;
  }

  main > h1 {
    font-size: 9vmin;
  }

  main > p {
    font-size: 3.5vmin;
  }

  .container {
    max-width: 75vmin;
  }

  .box {
    max-width: 22vmin;
    height: 22vmin;
    font-size: 9vmin;
  }

  .result {
    padding: 1.5rem 2rem;
    font-size: 3.5vmin;
  }

  .resetGame {
    padding: 13px 32px;
    font-size: 3vmin;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  body {
    padding: 2rem;
  }

  main > h1 {
    font-size: 8vmin;
  }

  main > p {
    font-size: 3vmin;
  }

  .container {
    max-width: 65vmin;
  }

  .box {
    max-width: 19vmin;
    height: 19vmin;
  }

  .result {
    padding: 1.6rem 2.2rem;
    font-size: 3.2vmin;
  }
}

@media (min-width: 1025px) and (max-width: 1440px) {
  body {
    padding: 2.5rem;
  }

  main > h1 {
    font-size: 7vmin;
  }

  main > p {
    font-size: 2.8vmin;
  }

  .container {
    max-width: 60vmin;
  }

  .box {
    max-width: 18vmin;
    height: 18vmin;
    font-size: 7.5vmin;
  }

  .result {
    padding: 1.8rem 2.5rem;
    font-size: 3vmin;
  }

  .resetGame {
    padding: 15px 38px;
    font-size: 2.6vmin;
  }
}

@media (min-width: 1441px) {
  body {
    padding: 3rem;
  }

  main > h1 {
    font-size: 6vmin;
    letter-spacing: 2px;
  }

  main > p {
    font-size: 2.5vmin;
  }

  .container {
    max-width: 55vmin;
  }

  .box {
    max-width: 16vmin;
    height: 16vmin;
    font-size: 7vmin;
  }

  .result {
    padding: 2rem 3rem;
    font-size: 2.8vmin;
  }

  .resetGame {
    padding: 16px 40px;
    font-size: 2.4vmin;
  }
}

@media (max-height: 600px) and (orientation: landscape) {
  body {
    padding: 1rem;
  }

  main > h1 {
    font-size: 6vmin;
    margin-bottom: 0.3rem;
  }

  main > p {
    font-size: 2.5vmin;
    margin-bottom: 1rem;
  }

  .game {
    margin-top: 1vmin;
  }

  .box {
    max-width: 12vmin;
    height: 12vmin;
    font-size: 5vmin;
  }

  .result {
    padding: 1rem 1.5rem;
    font-size: 2.5vmin;
    margin-top: 1.5vmin;
  }

  .resetGame {
    margin-top: 1.5rem;
    padding: 10px 25px;
    font-size: 2.2vmin;
  }
}