/* Tic Tac Toe Styles */
:root {
  --bg: #0f172a;
  --panel: #111827;
  --panel-2: #0b1220;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #22d3ee;
  --x: #60a5fa;
  --o: #f472b6;
  --win: #22c55e;
  --danger: #ef4444;
  --btn-bg: #1f2937;
  --btn-hover: #374151;
  --shadow: 0 10px 30px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 600px at 20% 10%, #1f2937, transparent),
              radial-gradient(1000px 500px at 80% 30%, #0b1220, transparent),
              linear-gradient(160deg, #0b1220, #0f172a);
  display: grid;
  place-items: center;
  padding: 24px;
}

.app {
  width: min(980px, 96vw);
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 20px 22px 26px;
}

.header { text-align: center; margin-bottom: 6px; }
.header h1 { margin: 4px 0 2px; font-size: 28px; letter-spacing: 0.5px; }
.header .sub { margin: 0; color: var(--muted); font-size: 14px; }

.controls { margin: 10px 0 8px; }
.controls .row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
}
.control { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.control select {
  appearance: none;
  background: var(--btn-bg);
  border: 1px solid #2b3443;
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  min-width: 150px;
  outline: none;
}

.btn {
  background: var(--btn-bg);
  color: var(--text);
  border: 1px solid #2b3443;
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}
.btn:hover { background: var(--btn-hover); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: 0.6; cursor: not-allowed; }
.btn-secondary { background: transparent; border-color: #303a4a; }

.scoreboard {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin: 6px 0 12px;
}
.score {
  background: #0f1525;
  border: 1px solid #263047;
  border-radius: 12px;
  padding: 10px 12px;
  text-align: center;
  font-weight: 600;
}
.score.x { color: var(--x); }
.score.o { color: var(--o); }
.score.draws { color: var(--muted); }

.board {
  display: grid;
  grid-template-columns: repeat(3, minmax(90px, 1fr));
  gap: 10px;
  justify-items: center;
  padding: 8px 2px;
}

.cell {
  width: min(26vmin, 150px);
  aspect-ratio: 1 / 1;
  border: 1px solid #2b3443;
  background: linear-gradient(180deg, #0f1525, #0a0f1d);
  border-radius: 16px;
  color: var(--text);
  font-weight: 800;
  font-size: clamp(28px, 8vmin, 64px);
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.08s ease, background 0.15s ease, border-color 0.15s ease;
}
.cell:hover { transform: translateY(-2px); border-color: #3a4660; }
.cell:active { transform: translateY(0); }

.cell.x { color: var(--x); }
.cell.o { color: var(--o); }
.cell.win { outline: 3px solid var(--win); box-shadow: 0 0 0 3px rgba(34,197,94,0.15), var(--shadow); }

.status { text-align: center; margin-top: 12px; color: var(--muted); font-size: 15px; }
.footer { text-align: center; margin-top: 10px; color: var(--muted); font-size: 12px; }

@media (max-width: 520px) {
  .controls .row { gap: 8px; }
  .control select { min-width: 130px; }
}