/* カテゴリ選択ボタン */
.category-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 20px;
}

.category-selector button {
  padding: 12px 24px;
  background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  flex: 1 1 30%;
  max-width: 200px;
}

.category-selector button:hover {
  background: linear-gradient(to right, #1c1c1c, #383838);
  transform: translateY(-2px);
}

/* サイズボタン群 */
#size-buttons table {
  width: 100%;
  text-align: center;
  border-spacing: 10px;
}

#size-buttons td {
  padding: 5px;
}

.size-button {
  display: block;
  width: 100%;
  padding: 12px 0;
  background: linear-gradient(to bottom, #003d66, #001f33);
  color: #ffffff;
  border-radius: 10px;
  text-decoration: none;
  font-size: 16px;
  font-weight: bold;
  box-shadow: 0 4px 6px rgba(0,0,0,0.3);
  transition: all 0.2s ease;
}

.size-button:hover {
  background: linear-gradient(to bottom, #004d80, #00294d);
}

.size-button:active {
  transform: translateY(2px);
  box-shadow: 0 2px 3px rgba(0,0,0,0.2);
}

/* モバイル対応 */
@media (max-width: 600px) {
  .category-selector button {
    flex: 1 1 100%;
    max-width: none;
  }

  #size-buttons table {
    width: 100%;
  }