.replay-button {
             width: 200px;
            height: 60px;
            margin: 20px auto;
            display: none;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: bold;
            color: white;
            text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
            border: 2px solid #d4af37;
            border-radius: 30px;
            background: linear-gradient(45deg, #d4af37, #ffd700, #fffacd);
            background-size: 200%;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 6px 12px rgba(0, 0, 0, 0.2);
            transition: all 0.3s ease;
            cursor: pointer;
        }


#game {
  background: url('https://3ndgame.sakura.ne.jp/root/wp-content/darkmat.png') no-repeat center center;
background-size: cover;

  padding: 10px;
  border-radius: 15px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
  text-align: center;
  width: 100%;
}

.hand {
  margin: 20px 0;
}

.cards {
  display: flex;
  justify-content: center;
}

.card {
  width: 60px;
  height: 90px;
  margin: 7px;
  
  background-color: #b99a6b; /* ゴールドっぽい色 */
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: bold;
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 10px rgba(0, 0, 0, 0.6);
}

.selected {
  border: 3px solid #d4af37; /* 高級感のあるゴールドの枠線 */
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.8); /* ゴールドの輝き */
}

button {
  margin: 7px;
  padding: 12px 30px;
  font-size: 16px;
  background-color: #d4af37;
  border: none;
  border-radius: 5px;
  color: #fff;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
  transition: background-color 0.3s ease, transform 0.2s ease;
}

button:hover {
  background-color: #c59d3e;
  transform: scale(1.05);
}

button:disabled {
  background-color: #777;
  cursor: not-allowed;
}
.start-button {
  padding: 16px 40px;
  font-size: 20px;
  font-weight: bold;
  background-color: #d4af37;
  color: #fff;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
  transition: transform 0.2s ease, background-color 0.3s ease;
}

.start-button:hover {
  background-color: #c59d3e;
  transform: scale(1.1);
}
.cards {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cards-row {
  display: flex;
  justify-content: center;
}