:root {
  --bg: #06060f;
  --panel: #0d0d1e;
  --panel-2: #09091a;
  --border: #1e1e42;
  --cyan: #22d3ee;
  --magenta: #ec4899;
  --yellow: #fbbf24;
  --green: #34d399;
  --text: #d0e4ff;
  --muted: rgba(208, 228, 255, 0.58);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: 'Rajdhani', sans-serif;
  overflow-x: hidden;
}

.scanlines,
.grid-bg {
  pointer-events: none;
  position: fixed;
  inset: 0;
}

.scanlines {
  z-index: 30;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0, 0, 0, 0.16) 2px, rgba(0, 0, 0, 0.16) 4px);
}

.grid-bg {
  z-index: 0;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
}

.page-header {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(6, 6, 15, 0.9);
}

.back-home,
.game-btn {
  font-family: 'Orbitron', monospace;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.back-home {
  color: var(--cyan);
  border: 1px solid rgba(34, 211, 238, 0.35);
  padding: 8px 12px;
  text-decoration: none;
  font-size: 11px;
}

.back-games {
  color: var(--magenta);
  border-color: rgba(236, 72, 153, 0.4);
}

.brand {
  margin-left: auto;
  font-family: 'Orbitron', monospace;
  font-size: clamp(18px, 3vw, 28px);
  font-weight: 900;
  letter-spacing: 3px;
}

.brand span,
.status,
.turn-card strong {
  color: var(--yellow);
  text-shadow: 0 0 16px rgba(251, 191, 36, 0.45);
}

.status {
  font-family: 'Share Tech Mono', monospace;
  letter-spacing: 2px;
}

.game-shell {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 18px;
  width: min(1020px, 100%);
  margin: 0 auto;
  padding: 24px;
}

.board-panel,
.side-panel {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(13, 13, 30, 0.96), rgba(8, 8, 22, 0.98));
  box-shadow: 0 0 28px rgba(34, 211, 238, 0.08);
  padding: 18px;
}

.panel-label,
.tiny-label {
  font-family: 'Share Tech Mono', monospace;
  color: var(--muted);
  letter-spacing: 3px;
  font-size: 11px;
}

.board {
  display: grid;
  grid-template-columns: repeat(3, minmax(86px, 1fr));
  gap: 10px;
  width: min(620px, 100%);
  margin: 18px auto 0;
}

.cell {
  aspect-ratio: 1;
  border: 2px solid rgba(34, 211, 238, 0.35);
  background: rgba(34, 211, 238, 0.055);
  color: var(--text);
  cursor: pointer;
  font-family: 'Orbitron', monospace;
  font-size: clamp(48px, 12vw, 112px);
  font-weight: 900;
  transition: transform 0.12s ease, border-color 0.12s ease, box-shadow 0.12s ease;
}

.cell:hover {
  transform: translateY(-2px);
  border-color: var(--cyan);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.16);
}

.cell.is-filled {
  cursor: default;
}

.cell span {
  display: block;
  line-height: 1;
}

.cell.is-filled span {
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(34, 211, 238, 0.45);
}

.cell.is-filled:nth-child(even) span {
  color: var(--magenta);
  text-shadow: 0 0 18px rgba(236, 72, 153, 0.45);
}

.cell.is-winner {
  border-color: var(--yellow);
  background: rgba(251, 191, 36, 0.12);
  box-shadow: 0 0 28px rgba(251, 191, 36, 0.2);
}

.side-panel {
  display: grid;
  align-content: start;
  gap: 14px;
}

.turn-card,
.score-card {
  border: 1px solid rgba(34, 211, 238, 0.16);
  background: rgba(5, 8, 22, 0.64);
  padding: 14px;
}

.turn-card strong {
  display: grid;
  place-items: center;
  width: 84px;
  height: 84px;
  margin: 14px auto;
  border: 2px solid var(--yellow);
  font-family: 'Orbitron', monospace;
  font-size: 44px;
}

.turn-card p {
  min-height: 42px;
  margin: 0;
  color: var(--muted);
  font-family: 'Share Tech Mono', monospace;
  font-size: 13px;
}

.score-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 12px;
}

.score-grid div {
  border: 1px solid rgba(251, 191, 36, 0.16);
  background: rgba(251, 191, 36, 0.05);
  padding: 10px;
  text-align: center;
}

.score-grid span {
  display: block;
  color: var(--muted);
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
}

.score-grid strong {
  color: var(--yellow);
  font-family: 'Orbitron', monospace;
  font-size: 24px;
}

.game-btn {
  min-height: 42px;
  border: 1px solid;
  background: transparent;
  padding: 11px 14px;
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
}

.game-btn.primary {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(34, 211, 238, 0.1);
}

.game-btn.secondary {
  color: var(--magenta);
  border-color: var(--magenta);
  background: rgba(236, 72, 153, 0.1);
}

@media (max-width: 820px) {
  .game-shell {
    grid-template-columns: 1fr;
  }

  .side-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .page-header {
    flex-wrap: wrap;
  }

  .brand {
    width: 100%;
    order: 3;
  }

  .game-shell {
    padding: 16px;
  }

  .board {
    grid-template-columns: repeat(3, minmax(74px, 1fr));
    gap: 8px;
  }

  .side-panel {
    grid-template-columns: 1fr;
  }
}