3x-ui/frontend/src/components/AppSidebar.css

.ant-sidebar > .ant-layout-sider {
  position: sticky;
  top: 0;
  height: 100vh;
  align-self: flex-start;
}

.sider-brand,
.drawer-brand {
  font-weight: 600;
  font-size: 18px;
  letter-spacing: 0.5px;
  color: var(--ant-color-text);
}

.sider-brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 14px 14px;
  border-bottom: 1px solid var(--ant-color-border-secondary);
  user-select: none;
}

.sider-brand-collapsed {
  justify-content: center;
  font-size: 16px;
  padding: 14px 4px;
  letter-spacing: 0;
}

.brand-block {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
  line-height: 1.1;
}

.brand-text {
  display: block;
}

.brand-version {
  display: block;
  width: 100%;
  text-align: center;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0;
  opacity: 0.6;
  margin-top: 2px;
}

.sider-brand-collapsed .brand-block {
  align-items: center;
  flex: 0 0 auto;
}

.brand-actions {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.sidebar-donate {
  background: transparent;
  border: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ant-color-text-secondary);
  text-decoration: none;
  flex-shrink: 0;
  transition: background-color 0.2s, transform 0.15s, color 0.2s;
}

.sidebar-donate:hover,
.sidebar-donate:focus-visible {
  background-color: rgba(236, 72, 153, 0.12);
  color: #ec4899;
  transform: scale(1.08);
  outline: none;
}

.sidebar-donate .anticon {
  font-size: 16px;
}

.sidebar-theme-cycle {
  background: transparent;
  border: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--ant-color-text-secondary);
  padding: 0;
  flex-shrink: 0;
  transition: background-color 0.2s, transform 0.15s, color 0.2s;
}

.sidebar-theme-cycle:hover,
.sidebar-theme-cycle:focus-visible {
  background-color: color-mix(in srgb, var(--ant-color-primary) 12%, transparent);
  color: var(--ant-color-primary);
  transform: scale(1.08);
  outline: none;
}

.sidebar-theme-cycle .anticon {
  font-size: 16px;
}

.drawer-header-actions {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.drawer-handle {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1100;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--ant-color-border-secondary);
}

.drawer-close {
  background: transparent;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  color: var(--ant-color-text-secondary);
}

.drawer-close:hover,
.drawer-close:focus-visible {
  background: var(--ant-color-fill-tertiary);
}

.drawer-menu .ant-menu-item {
  height: 48px;
  line-height: 48px;
  margin: 0;
  border-radius: 0;
}

.drawer-menu .ant-menu-item .anticon {
  font-size: 16px;
}

.drawer-utility {
  margin-top: auto;
  border-top: 1px solid var(--ant-color-border-secondary);
}

.ant-sidebar > .ant-layout-sider .ant-layout-sider-children {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.sider-nav {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  min-height: 0;
}

.sider-utility {
  flex: 0 0 auto;
  border-top: 1px solid var(--ant-color-border-secondary);
}

@media (max-width: 768px) {
  .drawer-handle {
    display: inline-flex;
  }

  .ant-sidebar > .ant-layout-sider .ant-layout-sider-children,
  .ant-sidebar > .ant-layout-sider .ant-layout-sider-trigger {
    display: none;
  }

  .ant-sidebar > .ant-layout-sider {
    flex: 0 0 0 !important;
    max-width: 0 !important;
    min-width: 0 !important;
    width: 0 !important;
  }
}

.sider-nav .ant-menu-item-selected,
.sider-utility .ant-menu-item-selected,
.drawer-menu .ant-menu-item-selected {
  background-color: color-mix(in srgb, var(--ant-color-primary) 20%, transparent) !important;
  color: var(--ant-color-primary) !important;
}

.sider-nav .ant-menu-item-active:not(.ant-menu-item-selected),
.sider-utility .ant-menu-item-active:not(.ant-menu-item-selected),
.drawer-menu .ant-menu-item-active:not(.ant-menu-item-selected),
.sider-nav .ant-menu-item:not(.ant-menu-item-selected):not(.ant-menu-item-disabled):hover,
.sider-utility .ant-menu-item:not(.ant-menu-item-selected):not(.ant-menu-item-disabled):hover,
.drawer-menu .ant-menu-item:not(.ant-menu-item-selected):not(.ant-menu-item-disabled):hover {
  background-color: color-mix(in srgb, var(--ant-color-primary) 10%, transparent) !important;
  color: var(--ant-color-primary) !important;
}