:root {
  --bg: #ffffff;
  --text: #000000;
  --cell: #f5f5f5;
  --border: #000000;
}

body.dark {
  --bg: #000000;
  --text: #ffffff;
  --cell: #111111;
  --border: #ffffff;
}

body {
  margin: 0;
  font-family: 'DotGothic16', monospace;
  background: var(--bg);
  color: var(--text);
  text-align: center;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  padding: 15px 20px;
  border-bottom: 2px dotted var(--border);
}

h1 {
  font-size: 1em;
  letter-spacing: 2px;
}

/* Toggle */
.toggle {
  border: 2px solid var(--border);
  background: none;
  color: var(--text);
  padding: 5px 10px;
  cursor: pointer;
  border-radius: 3px; /* 👈 added */
}

/* Board */
#board {
  display: grid;
  grid-template-columns: repeat(3, 85px);
  gap: 8px;
  justify-content: center;
  margin: 40px auto;
}

.cell {
  width: 85px;
  height: 85px;
  background: var(--cell);
  border: 2px solid var(--border);
  border-radius: 3px; /* 👈 added */
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
  transition: transform 0.08s ease;
}

/* Haptic press effect */
.cell:active {
  transform: scale(0.92);
}

/* Glyph X */
.cell.x::before,
.cell.x::after {
  content: "";
  position: absolute;
  width: 60%;
  height: 2px;
  background: var(--text);
}

.cell.x::before {
  transform: rotate(45deg);
}

.cell.x::after {
  transform: rotate(-45deg);
}

/* Glyph O */
.cell.o::before {
  content: "";
  width: 50%;
  height: 50%;
  border: 2px solid var(--text);
  border-radius: 3px;
  position: absolute;
}

/* Status */
#status {
  font-size: 0.8em;
  letter-spacing: 2px;
}

/* Buttons */
button {
  margin-top: 15px;
  padding: 6px 14px;
  border: 2px solid var(--border);
  background: none;
  color: var(--text);
  cursor: pointer;
  border-radius: 3px; /* 👈 added */
}