/* 头部样式 */
:root {
  --header-height: 72px;
  --header-bg: #ffffff;
  --nav-text: #666666;
  --nav-active: #0362f1;
  --search-bg: #eef4fe;
  --search-text: #333333;
  --logo-color: #0362f1;
  --search-popup-bg: linear-gradient(180deg, #1d4188 0%, #66dbff 100%);
  --search-popup-text: #ffffff;
}

[data-theme="dark"] {
  --header-bg: #1a1b28;
  --nav-text: #a0a0a0;
  --nav-active: #7a42f4;
  --search-bg: #2a2b3d;
  --search-text: #ffffff;
  --logo-color: #7a42f4;
  --search-popup-bg: linear-gradient(180deg, #1a1b28 0%, #2a2b3d 100%);
  --search-popup-text: #ffffff;
}

[data-theme="pink"] {
  --header-bg: #fdf2f8;
  --nav-text: #1f2937;
  --nav-active: #DB2777;
  --search-bg: #fce7f3;
  --search-text: #1f2937;
  --logo-color: #DB2777;
  --search-popup-bg: linear-gradient(180deg, #DB2777 0%, #f9a8d4 100%);
  --search-popup-text: #ffffff;
}

header.top-bar {
  width: 100%;
  background: var(--header-bg);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  border-bottom: none;
  padding: 0;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  box-sizing: border-box;
}

.header-left {
  display: flex;
  align-items: center;
  flex: 0 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background-color: var(--logo-color);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.logo-icon::after {
  content: "";
  display: block;
  width: 0;
  height: 0;
  border-top: 8px solid transparent;
  border-bottom: 8px solid transparent;
  border-left: 14px solid #ffffff;
  margin-left: 3px;
}

.logo-text {
  font-size: 22px;
  font-weight: 800;
  color: #1a1b28;
}

[data-theme="dark"] .logo-text {
  color: #ffffff;
}

.nav-container {
  display: flex;
  align-items: center;
  flex: 1;
  min-width: 0;
  margin: 0 10px;
  position: relative;
  height: 100%;
}

.main-nav {
  display: flex;
  gap: 8px;
  white-space: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none; /* Firefox */
  flex: 1;
  min-width: 0;
  padding: 4px 10px; /* 增加左右内边距，防止内容被箭头完全遮挡 */
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}

.nav-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  background: var(--header-bg);
  display: none; /* Initially hidden */
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 100;
  color: var(--nav-active);
  border-radius: 50%;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
  transition: all 0.3s;
  border: 1px solid rgba(0,0,0,0.05);
}

.nav-arrow i {
  font-size: 12px;
}

.nav-arrow:hover {
  background: var(--nav-active);
  color: #fff;
  transform: translateY(-50%) scale(1.1);
}

.left-arrow {
  left: 0;
}

.right-arrow {
  right: 0;
}

/* 添加渐变遮罩，使箭头处过渡更自然 */
.nav-container::before,
.nav-container::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 40px;
  z-index: 5;
  pointer-events: none;
  transition: opacity 0.3s;
  opacity: 0;
}

.nav-container.show-left::before {
  left: 0;
  background: linear-gradient(to right, var(--header-bg), transparent);
  opacity: 1;
}

.nav-container.show-right::after {
  right: 0;
  background: linear-gradient(to left, var(--header-bg), transparent);
  opacity: 1;
}

[data-theme="dark"] .nav-arrow {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
  border-color: rgba(255,255,255,0.1);
}

.main-nav .nav-item {
  flex: 0 0 auto;
}

.main-nav::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.nav-item {
  color: var(--nav-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  padding: 8px 12px;
  border-radius: 20px;
  transition: all 0.3s;
}

.nav-item:hover {
  color: var(--nav-active);
}

.nav-item.active {
  background-color: #eef4fe;
  color: var(--nav-active);
}

[data-theme="dark"] .nav-item.active {
  background-color: rgba(122, 66, 244, 0.1);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 0 0 auto;
}

.mobile-search-icon {
  display: none;
  cursor: pointer;
  font-size: 20px;
  color: var(--nav-text);
}

[data-theme="dark"] .mobile-search-icon {
  color: #ffffff;
}

[data-theme="pink"] .mobile-search-icon {
  color: var(--nav-active);
}

.search-container {
  position: relative;
  width: 280px;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--nav-active);
  font-size: 14px;
}

.search-input {
  width: 100%;
  height: 40px;
  background-color: var(--search-bg);
  border: none;
  border-radius: 20px;
  padding: 0 16px 0 44px;
  color: var(--search-text);
  font-size: 14px;
  outline: none;
}

.theme-select-wrapper {
  position: relative;
  height: 40px;
  min-width: 100px;
}

.theme-select-trigger {
  height: 40px;
  padding: 0 32px 0 16px;
  border-radius: 20px;
  border: 1px solid #dcdfe6;
  background-color: var(--header-bg);
  color: var(--nav-text);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  position: relative;
  user-select: none;
}

.theme-select-trigger:hover {
  border-color: #c0c4cc;
}

.theme-select-trigger.active {
  border-color: var(--nav-active);
  box-shadow: 0 0 0 2px rgba(3, 98, 241, 0.1);
}

.theme-select-trigger::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1024 1024' width='12' height='12'%3e%3cpath fill='%23c0c4cc' d='M831.872 340.864L512 652.672 192.128 340.864a30.592 30.592 0 0 0-42.752 0 29.12 29.12 0 0 0 0 41.6L489.664 714.24a32 32 0 0 0 44.672 0l340.288-331.776a29.12 29.12 0 0 0 0-41.6 30.592 30.592 0 0 0-42.752 0z'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-size: contain;
  transition: transform 0.3s;
}

.theme-select-trigger.active::after {
  transform: translateY(-50%) rotate(180deg);
}

.theme-options {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 100%;
  background-color: var(--header-bg);
  border: 1px solid #e4e7ed;
  border-radius: 4px;
  box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
  padding: 6px 0;
  z-index: 1001;
  display: none;
}

.theme-select-trigger.active + .theme-options {
  display: block;
}

.theme-option {
  padding: 0 20px;
  height: 34px;
  line-height: 34px;
  font-size: 14px;
  color: var(--nav-text);
  cursor: pointer;
  transition: background-color 0.2s;
  white-space: nowrap;
}

.theme-option:hover {
  background-color: #f5f7fa;
}

.theme-option.selected {
  color: var(--nav-active);
  font-weight: bold;
  background-color: #f5f7fa;
}

[data-theme="dark"] .theme-select-trigger {
  border-color: #4c4d5f;
}

[data-theme="dark"] .theme-select-trigger::after {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1024 1024' width='12' height='12'%3e%3cpath fill='%23606266' d='M831.872 340.864L512 652.672 192.128 340.864a30.592 30.592 0 0 0-42.752 0 29.12 29.12 0 0 0 0 41.6L489.664 714.24a32 32 0 0 0 44.672 0l340.288-331.776a29.12 29.12 0 0 0 0-41.6 30.592 30.592 0 0 0-42.752 0z'/%3e%3c/svg%3e");
}

[data-theme="dark"] .theme-options {
  background-color: #1a1b28;
  border-color: #333;
  box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .theme-option:hover {
  background-color: #2a2b3d;
}

[data-theme="dark"] .theme-option.selected {
  background-color: #2a2b3d;
}

[data-theme="pink"] .theme-select-trigger {
  border-color: #f9a8d4;
}

[data-theme="pink"] .theme-select-trigger::after {
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1024 1024' width='12' height='12'%3e%3cpath fill='%23ec4899' d='M831.872 340.864L512 652.672 192.128 340.864a30.592 30.592 0 0 0-42.752 0 29.12 29.12 0 0 0 0 41.6L489.664 714.24a32 32 0 0 0 44.672 0l340.288-331.776a29.12 29.12 0 0 0 0-41.6 30.592 30.592 0 0 0-42.752 0z'/%3e%3c/svg%3e");
}

[data-theme="pink"] .theme-options {
  background-color: #fdf2f8;
  border-color: #f9a8d4;
}

[data-theme="pink"] .theme-option:hover {
  background-color: #fce7f3;
}

[data-theme="pink"] .theme-option.selected {
  background-color: #fce7f3;
}

.mobile-category-nav {
  display: none;
  padding: 10px 16px;
  overflow-x: auto;
  white-space: nowrap;
  gap: 12px;
  scrollbar-width: none; /* Firefox */
}

.mobile-category-nav::-webkit-scrollbar {
  display: none; /* Chrome, Safari, Opera */
}

.mobile-nav-item {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  background: transparent;
  color: var(--nav-text);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
}

.mobile-nav-item.active {
  color: var(--nav-active);
  background: #eef4fe;
}

[data-theme="dark"] .mobile-nav-item.active {
  background-color: rgba(122, 66, 244, 0.1);
}

@media (max-width: 1024px) {
  .nav-container {
    display: none;
  }

  .mobile-category-nav {
    display: flex;
    border-top: 1px solid #f0f0f0;
  }

  [data-theme="dark"] .mobile-category-nav {
    border-top-color: #2a2b3d;
  }
}

@media (max-width: 768px) {
  .header-content {
    height: 60px;
    padding: 0 16px;
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    gap: 0;
    position: relative;
  }

  .header-left {
    width: auto;
    flex: 1;
    justify-content: flex-start;
  }

  .logo-text {
    font-size: 18px;
  }

  .logo-icon {
    width: 28px;
    height: 28px;
  }

  .header-right {
    width: auto;
    display: flex;
    align-items: center;
    gap: 8px;
    order: 2;
    margin-top: 0;
  }

  .search-container {
    display: none;
  }

  .theme-select-wrapper {
    display: block;
    height: 32px;
    min-width: 80px;
  }

  .theme-select-trigger {
    height: 32px;
    padding: 0 24px 0 12px;
    font-size: 13px;
  }

  .theme-select-trigger::after {
    right: 8px;
    width: 10px;
    height: 10px;
  }

  .theme-options {
    top: calc(100% + 4px);
  }

  .theme-option {
    height: 30px;
    line-height: 30px;
    padding: 0 12px;
    font-size: 13px;
  }

  .mobile-search-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    font-size: 18px;
  }

  .mobile-category-nav {
    display: flex;
    padding: 8px 12px;
    gap: 8px;
    border-top: 1px solid #f0f0f0;
  }
}

@media (max-width: 480px) {
  .header-content {
    padding: 10px 12px;
    gap: 8px;
  }
  
  .logo-text {
    font-size: 16px;
  }

  .mobile-nav-item {
    padding: 4px 12px;
    font-size: 13px;
  }
}