/* ====== Global Reset & Fonts ====== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", "Segoe UI", sans-serif;
}

body {
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364); /* deep teal/blue gradient */
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

main {
  text-align: center;
}

h1 {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: #ffe600; /* bright yellow for title */
  text-shadow: 2px 2px 15px rgba(255, 230, 0, 0.5);
}

/* ====== Game Board ====== */
.container {
  display: flex;
  justify-content: center;
}

.game {
  display: grid;
  grid-template-columns: repeat(3, 110px);
  grid-template-rows: repeat(3, 110px);
  gap: 12px;
  background: rgba(255, 255, 255, 0.05);
  padding: 18px;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.box {
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  font-size: 3rem;
  font-weight: bold;
  color: #eee; /* default color before marking */
  cursor: pointer;
  transition: all 0.25s ease;
}

.box:hover {
  background: rgba(255, 255, 255, 0.15);
  box-shadow: 0 0 14px rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

/* ====== Distinct X & O Colors ====== */
.box.x {
  color: #ff4fa3; /* Neon Pink for X */
  text-shadow: 0 0 12px rgba(255, 79, 163, 0.7);
}

.box.o {
  color: #00e6ff; /* Neon Cyan for O */
  text-shadow: 0 0 12px rgba(0, 230, 255, 0.7);
}

/* ====== Buttons ====== */
button#reset,
button#newButton {
  margin-top: 2rem;
  padding: 12px 32px;
  font-size: 1.1rem;
  font-weight: 600;
  border: none;
  border-radius: 40px;
  color: #fff;
  background: linear-gradient(135deg, #ff6b6b, #ff3cac); /* pink-magenta gradient */
  cursor: pointer;
  transition: all 0.3s ease;
}

button#reset:hover,
button#newButton:hover {
  background: linear-gradient(135deg, #ff8585, #ff4fa3);
  box-shadow: 0 0 18px rgba(255, 107, 107, 0.6);
  transform: translateY(-2px);
}

/* ====== Winner / Message Popup ====== */
.msg-container {
  position: fixed;
  inset: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  z-index: 10;
}

.msg-container.hide {
  display: none;
}

.msg-container p {
  font-size: 2.2rem;
  margin-bottom: 1.2rem;
  color: #00ff9f; /* Neon green winner text */
  text-shadow: 0 0 14px rgba(0, 255, 159, 0.6);
  text-align: center;
}

#newButton {
  margin-top: 0;
}

/* ====== Responsive ====== */
@media (max-width: 550px) {
  .game {
    grid-template-columns: repeat(3, 85px);
    grid-template-rows: repeat(3, 85px);
    gap: 10px;
  }

  .box {
    font-size: 2.2rem;
  }

  h1 {
    font-size: 2.4rem;
  }
}