:root {
  --bg: #f3f4f6;
  --surface: #ffffff;
  --text: #111827;
  --mark: #111827;
  --winning: #16a34a;
  --grid: #e5e7eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  max-width: 820px;
  margin: 24px auto;
  padding: 16px;
  background: var(--surface);
  border: 1px solid #d1d5db;
  border-radius: 8px;
}

h1 {
  margin: 0 0 12px;
  font-size: 1.5rem;
}

.network {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}

.network label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
}

.network input {
  min-width: 90px;
}

.connection-info {
  margin: 0;
  font-size: 0.9rem;
}

.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hud p {
  margin: 0;
}

.setup {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.setup label {
  display: flex;
  gap: 6px;
  align-items: center;
  font-size: 0.9rem;
}

.board {
  display: grid;
  gap: 1px;
  width: 100%;
  aspect-ratio: 1 / 1;
  background: var(--grid);
  border: 1px solid #d1d5db;
  grid-auto-rows: 1fr;
}

.cell {
  appearance: none;
  background: #fafafa;
  border: 0;
  padding: 0;
  color: #0f172a;
  font-weight: 700;
  font-size: clamp(18px, 3.2vw, 34px);
  font-family: "Bradley Hand", "Segoe Print", "Comic Sans MS", cursive;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  text-shadow: 0.3px 0.3px 0 rgba(15, 23, 42, 0.22);
}

.cell.win {
  background: #dcfce7;
  color: var(--winning);
}

.cell.player-0 {
  color: #1d4ed8;
}

.cell.player-1 {
  color: #b91c1c;
}

.cell.player-2 {
  color: #15803d;
}

.cell.player-3 {
  color: #7c3aed;
}

.cell.player-4 {
  color: #ea580c;
}

.status {
  min-height: 1.5em;
  margin: 10px 0;
}

.turn {
  margin: 8px 0 10px;
}

.controls {
  display: grid;
  gap: 8px;
  justify-content: center;
}

.controls .row {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, 1fr);
}

.controls button {
  min-width: 72px;
  padding: 8px 10px;
}

@media (min-width: 768px) {
  .controls {
    display: none;
  }
}