/* 统一导航栏Popover样式 */
.nav-item-with-popover {
  position: relative;
}

.nav-item-with-popover .popover {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: #0b0e14;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  padding: 0;
  min-width: 200px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, visibility 0.15s ease, transform 0.15s ease;
  margin-top: 5px;
  pointer-events: none;
}

.nav-item-with-popover .popover.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* 为导航项添加悬停区域 - 确保popover区域被包含 */
.nav-item-with-popover::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 220px;
  height: 25px;
  background: transparent;
  z-index: 999;
}

.nav-item-with-popover .popover::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-bottom: 8px solid #0b0e14;
}

.nav-item-with-popover .popover::after {
  content: '';
  position: absolute;
  top: -9px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 9px solid transparent;
  border-right: 9px solid transparent;
  border-bottom: 9px solid rgba(255, 255, 255, 0.1);
  z-index: -1;
}

.popover-content {
  padding: 8px 0;
}

.popover-item {
  padding: 12px 20px;
  color: #9ca3af;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  text-align: center;
}

.popover-item:last-child {
  border-bottom: none;
}

.popover-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: white;
  padding-left: 20px;
}

/* 登录和注册按钮悬停效果 */
.navbar a[href="https://p.kolbox.com/user/login"]:hover,
.navbar a[href="https://p.kolbox.com/user/register"]:hover {
  color: #3b82f6 !important;
  transition: color 0.3s ease;
}