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

body {
  font-family: Arial, sans-serif;
  background: #111;
  color: #fff;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

#root {
  width: 100%;
  max-width: 600px;
  padding: 16px;
}

.app {
  background: #1c1c1c;
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.6);
}

.titulo {
  text-align: center;
  margin-bottom: 8px;
  font-size: 22px;
}

.subtitulo {
  text-align: center;
  font-size: 13px;
  color: #ccc;
  margin-bottom: 12px;
}

.painel-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 14px;
}

.botao {
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  background: #ff9800;
  color: #111;
  font-weight: bold;
}

.botao:active {
  transform: scale(0.97);
}

.tabuleiro {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.carta {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: 10px;
  background: #333;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  font-size: 30px;
  user-select: none;
  transition: transform 0.2s, background 0.2s;
}

.carta.virada {
  background: #ff9800;
  color: #111;
  transform: scale(1.03);
}

.carta.combinada {
  background: #4caf50;
  color: #111;
  cursor: default;
}

.mensagem-final {
  text-align: center;
  margin-top: 10px;
  font-size: 14px;
}