header {
  position: sticky !important;
  top: 0;
  z-index: 1000;
  background-color: white;
  transform: translateZ(0);
  border-bottom: 1px solid #d1d1d1;
  will-change: transform;
}

.navbar-nav .nav-link i {
  color: #de0022 !important;
  font-size: 18px;
  vertical-align: middle;
  margin-right: 8px;
}

/* 設定文字大小與樣式 */
.navbar-nav .nav-link {
  font-size: 16px;
  font-weight: bold;
  display: flex;
  align-items: center;
  gap: 8px;
}

.notification-btn {
  border: 2px solid #e6e6e6;
  background-color: transparent;
  padding: 8px;
  color: #cccccc;
  font-size: 1.4rem;
  width: 50px;
  height: 50px;
  position: relative;
}

.notification-badge {
  position: absolute;
  top: 0;
  left: 100%;
  transform: translate(-50%, -50%);
  background-color: #dc3545;
  color: white;
  font-size: 0.75rem;
  padding: 2px 6px;
  border-radius: 999px;
}

/* 小螢幕下選單項目排版 */
@media (max-width: 768px) {
  .nav-item {
    margin: 5px 0;
  }

  .nav-link i {
    font-size: 16px;
  }
}

.nav-link i {
  font-size: 18px;
  margin-right: 8px;
  vertical-align: middle;
  width: 20px;
  height: 20px;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='%23cccccc' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E") !important;
}

.nav-button {
  border: 2px solid #e6e6e6;
  background-color: transparent;
  padding: 8px;
  color: #cccccc !important;
}

/* 手機版導航選單高亮樣式 */
@media (max-width: 1199.98px) {
  .navbar-nav .nav-link {
    padding-left: 5px;
  }

  .navbar-nav .nav-link.active-page {
    background-color: #DE0022 !important;
    color: #ffffff !important;
    border-radius: 4px;
    padding-left: 5px;
  }

  .navbar-nav .nav-link.active-page i,
  .navbar-nav .nav-link.active-page .fa-fw {
    color: #ffffff !important;
  }

  .navbar-nav .dropdown-menu .nav-link.active-page {
    background-color: #DE0022 !important;
    color: #ffffff !important;
    border-radius: 4px;
  }

  .navbar-nav .dropdown-menu .nav-link.active-page i,
  .navbar-nav .dropdown-menu .nav-link.active-page .fa-fw {
    color: #ffffff !important;
  }

  /* 確保下拉選單展開時顯示 */
  .navbar-nav .dropdown.show .dropdown-menu {
    display: block !important;
  }
}