/* ==========================================================================
   应用外壳：侧边栏 · 顶栏 · 主内容区
   --------------------------------------------------------------------------
   收起动画要点：收起宽度 72px，图标中心固定在 x=36px；展开时导航项
   margin 12 + padding 14 = 26px 恰好让图标位置不变，动画中图标纹丝不动，
   只有文字淡出、宽度收拢。
   ========================================================================== */

.app { min-height: 100vh; }

/* ---------- 侧边栏 ---------- */
.app-sidebar {
  position: fixed;
  top: 0; bottom: 0; left: 0;
  z-index: var(--z-sidebar);
  display: flex;
  flex-direction: column;
  width: var(--sidebar-w);
  overflow: hidden;
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  transition: width var(--dur-3) var(--ease-out);
}

.sidebar-head {
  display: flex;
  align-items: center;
  flex: none;
  height: var(--topbar-h);
  padding: 0 20px;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  border-radius: var(--r-md);
}
.sidebar-logo {
  width: 32px; height: 32px;
  flex: none;
  border-radius: 9px;
}
.sidebar-brand-text {
  font-size: var(--fs-15);
  font-weight: var(--fw-semibold);
  letter-spacing: .02em;
  white-space: nowrap;
  transition: opacity var(--dur-2) var(--ease-out) 60ms;
}
.sidebar-close { display: none; margin-left: auto; margin-right: -8px; }

.sidebar-nav {
  flex: 1;
  min-height: 0;
  padding: 4px 12px 12px;
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-width: none;
}
.sidebar-nav::-webkit-scrollbar { display: none; }

.nav-group + .nav-group { margin-top: 6px; }
.nav-group-title {
  position: relative;
  display: flex;
  align-items: center;
  height: 30px;
  padding: 0 14px;
  font-size: var(--fs-12);
  color: var(--c-text-3);
  white-space: nowrap;
}
.nav-group-title > span { transition: opacity var(--dur-2) var(--ease-out) 60ms; }
.nav-group-title::after {
  content: "";
  position: absolute;
  top: 50%; left: 50%;
  width: 18px; height: 1px;
  background: var(--c-border-2);
  opacity: 0;
  transform: translate(-50%, -50%) scaleX(.3);
  transition: opacity var(--dur-2) var(--ease-out), transform var(--dur-3) var(--ease-out);
}

.nav-list { display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  height: 40px;
  padding: 0 14px;
  border-radius: var(--r-md);
  color: var(--c-gray-700);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  transition: background-color var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out);
}
.nav-item > .yb-icon { width: 20px; height: 20px; color: var(--c-icon); }
.nav-item:hover { background: var(--c-fill-1); color: var(--c-text-1); }
.nav-item:active { background: var(--c-fill-2); }
.nav-item.is-active { background: var(--c-fill-2); color: var(--c-text-1); font-weight: var(--fw-semibold); }
.nav-item.is-active > .yb-icon { stroke-width: 2; }
/* 选中指示：贴着侧边栏左缘的暖阳黄短条 */
.nav-item.is-active::before {
  content: "";
  position: absolute;
  top: 11px; bottom: 11px; left: -12px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--c-brand-sun);
}
.nav-label {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity var(--dur-2) var(--ease-out) 60ms;
}

.sidebar-foot {
  flex: none;
  padding: 10px 12px 14px;
  border-top: 1px solid var(--c-divider);
}
.sidebar-version {
  height: 22px;
  margin-top: 6px;
  padding: 0 14px;
  font-size: var(--fs-12);
  color: var(--c-text-4);
  white-space: nowrap;
  transition: opacity var(--dur-2) var(--ease-out) 60ms;
}

/* ---------- 主体 ---------- */
.app-body {
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100vh;
  margin-left: var(--sidebar-w);
  transition: margin-left var(--dur-3) var(--ease-out);
}

/* ---------- 顶栏 ---------- */
.app-topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--topbar-h);
  padding: 0 20px 0 16px;
  background: rgba(255, 255, 255, .86);
  border-bottom: 1px solid var(--c-border);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
}
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 10px; min-width: 0; }
.topbar-sep { width: 1px; height: 18px; background: var(--c-border-2); }
.topbar-title {
  overflow: hidden;
  font-size: var(--fs-15);
  font-weight: var(--fw-semibold);
  white-space: nowrap;
  text-overflow: ellipsis;
}
.topbar-brand { display: none; }

/* 收起 / 展开 / 菜单 三个图标按状态切换 */
.sidebar-toggle .icon-menu, .sidebar-toggle .icon-open { display: none; }

/* ---------- 账号 ---------- */
.account-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 8px 0 4px;
  border-radius: var(--r-full);
  transition: background-color var(--dur-1) var(--ease-out);
}
.account-trigger:hover, .account-trigger[aria-expanded="true"] { background: var(--c-fill-1); }
.account-name { font-weight: var(--fw-medium); white-space: nowrap; }
.account-chev {
  width: 16px; height: 16px;
  color: var(--c-text-3);
  transition: transform var(--dur-2) var(--ease-out);
}
.account-trigger[aria-expanded="true"] .account-chev { transform: rotate(180deg); }

.account-menu { width: 280px; }
.account-card { display: flex; align-items: center; gap: 12px; padding: 10px 10px 12px; }
.account-card-text { min-width: 0; }
.account-card-name { display: flex; align-items: center; gap: 8px; font-size: var(--fs-15); font-weight: var(--fw-semibold); }
.account-card-mail {
  margin-top: 2px;
  overflow: hidden;
  font-size: var(--fs-12);
  color: var(--c-text-3);
  white-space: nowrap;
  text-overflow: ellipsis;
}
.account-id {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  height: 34px;
  margin-bottom: 2px;
  padding: 0 10px;
  border-radius: var(--r-sm);
  background: var(--c-fill-1);
  font-size: var(--fs-12);
  color: var(--c-text-3);
  transition: background-color var(--dur-1) var(--ease-out);
}
.account-id:hover, .account-id:focus-visible { background: var(--c-fill-2); outline: none; }
.account-id code { color: var(--c-text-1); font-weight: var(--fw-medium); letter-spacing: .02em; }
.account-id > .yb-icon { width: 15px; height: 15px; margin-left: auto; color: var(--c-text-3); }

/* ---------- 主内容 ---------- */
.app-main {
  flex: 1;
  width: 100%;
  max-width: calc(var(--content-max) + var(--page-px) * 2);
  margin: 0 auto;
  padding: 24px var(--page-px) 48px;
  container-type: inline-size;
  container-name: main;
}

/* 遮罩（手机端抽屉） */
.app-scrim {
  position: fixed;
  inset: 0;
  z-index: var(--z-scrim);
  background: rgba(17, 20, 26, .32);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-3) var(--ease-out);
}

/* ==========================================================================
   桌面端：收起状态
   ========================================================================== */
@media (min-width: 960px) {
  .is-sidebar-collapsed .app-sidebar { width: var(--sidebar-w-mini); }
  .is-sidebar-collapsed .app-body { margin-left: var(--sidebar-w-mini); }

  .is-sidebar-collapsed .sidebar-brand-text,
  .is-sidebar-collapsed .nav-label,
  .is-sidebar-collapsed .nav-group-title > span,
  .is-sidebar-collapsed .sidebar-version {
    opacity: 0;
    pointer-events: none;
    transition-delay: 0s;
    transition-duration: var(--dur-1);
  }
  .is-sidebar-collapsed .nav-group-title::after { opacity: 1; transform: translate(-50%, -50%); }

  .is-sidebar-collapsed .sidebar-toggle .icon-close { display: none; }
  .is-sidebar-collapsed .sidebar-toggle .icon-open { display: block; }
}

/* ==========================================================================
   平板 / 手机：侧边栏变为抽屉
   ========================================================================== */
@media (max-width: 959px) {
  .app-sidebar {
    z-index: var(--z-drawer);
    width: var(--drawer-w);
    max-width: 86vw;
    visibility: hidden;
    transform: translateX(-100%);
    transition: transform var(--dur-3) var(--ease-out), box-shadow var(--dur-3) var(--ease-out),
                visibility 0s linear var(--dur-3);
  }
  .is-drawer-open .app-sidebar {
    visibility: visible;
    transform: none;
    box-shadow: var(--shadow-drawer);
    transition: transform var(--dur-3) var(--ease-out), box-shadow var(--dur-3) var(--ease-out), visibility 0s;
  }
  .is-drawer-open .app-scrim { opacity: 1; pointer-events: auto; }
  .sidebar-close { display: inline-grid; }

  .app-body { margin-left: 0; }
  .app-topbar { padding: 0 12px 0 8px; }
  .topbar-brand { display: block; width: 28px; height: 28px; border-radius: 8px; }
  .topbar-sep { display: none; }
  .sidebar-toggle .icon-close, .sidebar-toggle .icon-open { display: none; }
  .sidebar-toggle .icon-menu { display: block; }
}

@media (max-width: 639px) {
  .account-name, .account-chev { display: none; }
  .account-trigger { padding: 0 4px; }
}

/* 跨断点缩放窗口时不播放侧边栏动画 */
.is-resizing .app-sidebar, .is-resizing .app-body { transition: none !important; }

/* ==========================================================================
   页面通用结构
   ========================================================================== */
.page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 16px;
  margin-bottom: 20px;
}
.page-actions { display: flex; align-items: center; gap: 12px; }
.page-meta { font-size: var(--fs-13); color: var(--c-text-3); white-space: nowrap; }

/* 页面切换时侧边栏保持静止，只有内容区淡入淡出 */
.app-sidebar { view-transition-name: yb-sidebar; }
.app-main:focus, .app-main:focus-visible { outline: none; }

/* ==========================================================================
   可下拉分组（如「主题项目」）
   --------------------------------------------------------------------------
   子项文字与父项文字左对齐（12 + 14 + 20 + 12 = 58px）；
   竖向引导线位于父项图标中心 x = 36px。
   ========================================================================== */
.nav-parent { width: 100%; text-align: left; }
.nav-caret {
  width: 16px; height: 16px;
  margin-left: auto;
  color: var(--c-text-3) !important;
  transform: rotate(-90deg);
  transition: transform var(--dur-3) var(--ease-out), opacity var(--dur-2) var(--ease-out);
}
.nav-node.is-expanded > .nav-parent .nav-caret { transform: none; }

/* 子项所在分组被选中：父项文字加深；分组收起时父项显示完整选中态 */
.nav-node.has-active > .nav-parent { color: var(--c-text-1); }
.nav-node.has-active > .nav-parent > .yb-icon:first-child { stroke-width: 2; }
.nav-node.has-active:not(.is-expanded) > .nav-parent { background: var(--c-fill-2); font-weight: var(--fw-semibold); }
.nav-node.has-active:not(.is-expanded) > .nav-parent::before,
.nav-subitem.is-active::before {
  content: "";
  position: absolute;
  top: 10px; bottom: 10px; left: -12px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--c-brand-sun);
}

.nav-sub-wrap {
  display: grid;
  grid-template-rows: 0fr;
  visibility: hidden;
  transition: grid-template-rows var(--dur-3) var(--ease-out), visibility 0s linear var(--dur-3);
}
.nav-node.is-expanded > .nav-sub-wrap {
  grid-template-rows: 1fr;
  visibility: visible;
  transition: grid-template-rows var(--dur-3) var(--ease-out), visibility 0s;
}
/* 向左扩出 12px，让选中指示条不被裁掉 */
.nav-sub {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-height: 0;
  margin-left: -12px;
  padding: 2px 0 2px 12px;
  overflow: hidden;
}
.nav-sub::before {
  content: "";
  position: absolute;
  top: 4px; bottom: 6px; left: 35.5px;
  width: 1px;
  background: var(--c-border-2);
}
.nav-subitem {
  position: relative;
  display: flex;
  align-items: center;
  height: 36px;
  padding: 0 14px 0 46px;
  border-radius: var(--r-md);
  color: var(--c-gray-600);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  transition: background-color var(--dur-1) var(--ease-out), color var(--dur-1) var(--ease-out);
}
.nav-subitem:hover { background: var(--c-fill-1); color: var(--c-text-1); }
.nav-subitem:active { background: var(--c-fill-2); }
.nav-subitem.is-active { background: var(--c-fill-2); color: var(--c-text-1); font-weight: var(--fw-semibold); }

/* 收起态弹出的子菜单 */
.nav-flyout { min-width: 184px; }
.yb-menu-item[aria-current="page"] { background: var(--c-fill-1); font-weight: var(--fw-semibold); }
.nav-node.is-open > .nav-parent { background: var(--c-fill-1); }

@media (min-width: 960px) {
  /* 需高于 .nav-node.is-expanded > .nav-sub-wrap 的优先级 */
  .is-sidebar-collapsed .nav-node.is-expanded > .nav-sub-wrap,
  .is-sidebar-collapsed .nav-sub-wrap {
    grid-template-rows: 0fr;
    visibility: hidden;
    transition: grid-template-rows var(--dur-3) var(--ease-out), visibility 0s linear var(--dur-3);
  }
  .is-sidebar-collapsed .nav-caret { opacity: 0; transition-delay: 0s; transition-duration: var(--dur-1); }
  .is-sidebar-collapsed .nav-node.has-active > .nav-parent { background: var(--c-fill-2); font-weight: var(--fw-semibold); }
  .is-sidebar-collapsed .nav-node.has-active > .nav-parent::before {
    content: "";
    position: absolute;
    top: 10px; bottom: 10px; left: -12px;
    width: 3px;
    border-radius: 0 3px 3px 0;
    background: var(--c-brand-sun);
  }
}

/* ==========================================================================
   顶栏：面包屑与同步状态
   ========================================================================== */
.topbar-crumbs { display: flex; align-items: center; gap: 6px; min-width: 0; }
.topbar-section { font-size: var(--fs-15); color: var(--c-text-3); white-space: nowrap; }
.topbar-crumb-sep { width: 14px; height: 14px; color: var(--c-text-4); }
@media (max-width: 639px) {
  .topbar-section, .topbar-crumb-sep { display: none; }
}

.sync-trigger { position: relative; }
.sync-trigger .sync-ic { display: none; }
.sync-trigger[data-state="checking"] .sync-ic--ok,
.sync-trigger[data-state="synced"] .sync-ic--ok,
.sync-trigger[data-state="pending"] .sync-ic--up,
.sync-trigger[data-state="syncing"] .sync-ic--up,
.sync-trigger[data-state="error"] .sync-ic--off,
.sync-trigger[data-state="offline"] .sync-ic--off { display: block; }
.sync-trigger[data-state="checking"] .sync-ic--ok { opacity: .35; }
.sync-trigger[data-state="syncing"] .sync-ic--up { animation: sync-pulse 1.1s ease-in-out infinite; }
.sync-trigger::after {
  content: "";
  position: absolute;
  top: 6px; right: 5px;
  width: 8px; height: 8px;
  border: 1.5px solid var(--c-surface);
  border-radius: 50%;
  background: transparent;
  transform: scale(0);
  transition: transform var(--dur-2) var(--ease-spring);
}
.sync-trigger[data-state="pending"]::after { background: var(--c-amber-500); transform: scale(1); }
.sync-trigger[data-state="error"]::after { background: var(--c-danger); transform: scale(1); }
@keyframes sync-pulse { 50% { opacity: .3; } }

.sync-panel { width: 304px; padding: 16px; }
.sync-panel.is-sheet { padding: 0 20px calc(20px + env(safe-area-inset-bottom)); }
.sync-title { font-size: var(--fs-15); font-weight: var(--fw-semibold); }
.sync-detail { margin-top: 4px; font-size: var(--fs-13); line-height: 1.65; color: var(--c-text-2); }
.sync-detail:empty { display: none; }
.sync-meta {
  display: grid;
  gap: 6px;
  margin: 12px 0;
  padding: 10px 12px;
  border-radius: var(--r-md);
  background: var(--c-fill-1);
  font-size: var(--fs-12);
}
.sync-meta div { display: flex; justify-content: space-between; gap: 12px; }
.sync-meta dt { color: var(--c-text-3); }
.sync-meta dd { margin: 0; color: var(--c-text-1); font-variant-numeric: tabular-nums; }
.sync-foot { margin-top: 10px; font-size: var(--fs-12); color: var(--c-text-3); text-align: center; }