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

body {
  background-color: #ece5d5;
}

:root {
  --cell-size: min(90vw, 100px);
  --mark-size: calc(100px * 0.9);
}

.container {
  height: 100vh;
  display: grid;
  justify-content: center;
  justify-items: center;
  align-items: center;
  align-content: center;
  grid-template-columns: repeat(3, 100px);

  grid-template-columns: repeat(3, var(--cell-size));
  grid-template-rows: repeat(3, var(--cell-size));
}

.cell {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100px;
  height: 100px;
  background-color: #deaa7d;
  border: 1px solid #d9d9d9;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
  cursor: pointer;
  user-select: none;
}

/* for hovering x and o */

.container.x .cell:not(.x):not(.o):hover::before,
.container.x .cell:not(.x):not(.o):hover::after {
  background-color: rgba(255, 151, 151, 0.4);
}

.container.o .cell:not(.x):not(.o):hover::before,
.container.o .cell:not(.x):not(.o):hover::after {
  background-color: rgba(75, 85, 99, 0.2);
}

/* x style */

.cell.x::before,
.cell.x::after,
.container.x .cell:not(.x):not(.o):hover::before,
.container.x .cell:not(.x):not(.o):hover::after {
  content: "";
  width: calc(var(--mark-size) * 0.15);
  height: var(--mark-size);
  position: absolute;
}

.cell.x::before,
.cell.x::after {
  background-color: #ff9797;
}

.cell.x::before,
.container.x .cell:not(.x):not(.o):hover::before {
  transform: rotate(45deg);
}

.cell.x:after,
.container.x .cell:not(.x):not(.o):hover::after {
  transform: rotate(-45deg);
}

/* o style */

.cell.o::before,
.cell.o::after,
.container.o .cell:not(.x):not(.o):hover::before,
.container.o .cell:not(.x):not(.o):hover::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.cell.o::before {
  background-color: #4b5563;
}

.cell.o::before,
.container.o .cell:not(.x):not(.o):hover::before {
  width: var(--mark-size);
  height: var(--mark-size);
}

.cell.o::after,
.container.o .cell:not(.x):not(.o):hover::after {
  width: calc(var(--mark-size) * 0.7);
  height: calc(var(--mark-size) * 0.7);
  background-color: #deaa7d;
}

.cell.o,
.cell.x {
  cursor: not-allowed;
}

.result-msg-box {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  justify-content: center;
  align-items: center;
  background-color: rgba(0, 0, 0, 0.8);
}

.result-msg {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 15px;
}

.result-msg p {
  color: #d9d9d9;
  font-size: clamp(24px, 5vw, 38px);
  font-weight: 600;
}

.restart-btn-style {
  border: none;
  outline: none;
  background-color: #c6d4d6;
  padding: 16px 22px;
  color: #735c00;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s;
  padding: clamp(10px, 2vw, 16px) clamp(14px, 3vw, 22px);
  font-size: clamp(14px, 2vw, 18px);
}

.restart-btn-style:hover {
  transform: scale(1.1);
}

.result-msg-box.show {
  display: flex;
}

@media (hover: none) {
  .cell {
    cursor: default; 
  }
  .restart-btn-style:hover {
    transform: none;
  }
}