.reservation-form {
  max-width: 420px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.reservation-form label {
  display: flex;
  flex-direction: column;
  font-size: 14px;
}

.reservation-form input {
  padding: 10px;
  font-size: 14px;
}

.hint {
  font-size: 12px;
  color: #777;
}

.group-notice {
  padding: 12px;
  background: #fff3cd;
  border-left: 4px solid #ff9800;
  font-size: 14px;
}

button {
  padding: 12px;
  background: #000;
  color: #fff;
  border: none;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ================ 返回按钮设置  ================= */

.back-button {
  background: #f5f5f5;          /* 背景色，可微调 */
  border: 1px solid #ddd;
  border-radius: 999px;         /* 胶囊效果 */
  padding: 6px 14px;
  margin-bottom: 24px;

  display: inline-flex;
  align-items: center;
  gap: 8px;

  font-size: 14px;
  color: #222;
  cursor: pointer;
}

.back-button:hover {
  text-decoration: underline;
}

/* 用 border 画箭头 */
.back-button .arrow {
  width: 8px;
  height: 8px;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin : 8px;
}