/* Shared management rail contract. nav-auth.js marks every manifest-owned
   management page with .manage-rail-page and creates #manageRail when needed.
   All rail internals are ID-scoped so generic page rules for button, details,
   summary, width or spacing cannot change its geometry. */
:root {
  --manage-rail-w: 110px;
  --manage-rail-top: 62px; /* runtime replaces this with the measured header edge */
}

body.manage-rail-page { padding-left: var(--manage-rail-w) !important; }
body.manage-rail-page.manage-rail-collapsed { padding-left: 0 !important; }
body.manage-rail-page .common-nav-shell {
  box-sizing: border-box;
  width: calc(100% + var(--manage-rail-w));
  max-width: none;
  margin-left: calc(var(--manage-rail-w) * -1);
}
body.manage-rail-page.manage-rail-collapsed .common-nav-shell {
  width: 100%;
  margin-left: 0;
}
body.manage-rail-page .common-nav-shell.manage-nav-shell-fixed {
  width: 100%;
  margin-left: 0;
}

#manageRail,
#manageRail * {
  box-sizing: border-box;
}

#manageRail.manage-rail {
  position: fixed;
  left: 0;
  top: var(--manage-rail-top);
  bottom: 0;
  z-index: 95; /* under the sticky header (100), over page content */
  width: var(--manage-rail-w);
  min-width: var(--manage-rail-w);
  max-width: var(--manage-rail-w);
  height: auto;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 6px;
  padding: 12px 8px;
  background: rgba(255, 255, 255, 0.92);
  border-right: 1px solid var(--bd, #e2e8f0);
  /* the rail grows downwards as buttons are added; it scrolls rather than clips */
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  scrollbar-width: none;
  transition: transform .2s ease, visibility .2s ease;
}
body.manage-rail-collapsed #manageRail.manage-rail {
  transform: translateX(-100%);
  visibility: hidden;
  pointer-events: none;
}
#manageRail.manage-rail::-webkit-scrollbar { width: 0; height: 0; }

#manageRailToggle.manage-rail-toggle {
  position: fixed;
  left: var(--manage-rail-w);
  top: calc(var(--manage-rail-top) + 8px);
  z-index: 96;
  width: 28px;
  height: 34px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--bd, #e2e8f0);
  border-left: 0;
  border-radius: 0 9px 9px 0;
  background: rgba(255,255,255,.96);
  color: var(--t2, #434345);
  font: 800 22px/32px Inter,"PingFang SC","Microsoft YaHei",sans-serif;
  text-align: center;
  box-shadow: 4px 4px 12px rgba(15,23,42,.08);
  cursor: pointer;
  transition: left .2s ease, background .2s ease, color .2s ease;
}
#manageRailToggle.manage-rail-toggle:hover { background: var(--tg, #f1f5f9); color: var(--t1, #1D1D1F); }
#manageRailToggle.manage-rail-toggle:focus-visible { outline: 3px solid rgba(37,99,235,.25); outline-offset: 2px; }
body.manage-rail-collapsed #manageRailToggle.manage-rail-toggle { left: 0; }

#manageRail .manage-rail-btn {
  appearance: none;
  flex: 0 0 auto;
  display: block;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  height: 34px;
  min-height: 0;
  max-height: 34px;
  margin: 0;
  padding: 0 10px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  color: var(--t2, #434345);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 32px;
  letter-spacing: 0;
  text-transform: none;
  text-align: left;
  box-shadow: none;
  cursor: pointer;
  /* a longer label ellipsises instead of wrapping the button out of shape */
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background .2s, color .2s, border-color .2s;
}
#manageRail .manage-rail-btn:hover { background: var(--tg, #f1f5f9); color: var(--t1, #1D1D1F); }
#manageRail .manage-rail-btn.a { background: var(--accent, #111827); color: #fff; }
#manageRail .manage-rail-group {
  flex: 0 0 auto;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
#manageRail .manage-rail-group > summary {
  margin: 0;
  list-style: none;
}
#manageRail .manage-rail-group > summary::-webkit-details-marker { display: none; }
#manageRail .manage-rail-group-toggle {
  position: relative;
  /* 导轨只有 110px：箭头占位收窄一点，5 个字的组名（小程序管理）才不会被省略号截掉 */
  padding-inline: 8px 14px;
}
#manageRail .manage-rail-group-toggle::after {
  content: "›";
  position: absolute;
  right: 5px;
  top: 50%;
  line-height: 1;
  transform: translateY(-50%) rotate(0deg);
  transition: transform .2s ease;
}
#manageRail .manage-rail-group[open] .manage-rail-group-toggle::after {
  transform: translateY(-50%) rotate(90deg);
}
#manageRail .manage-rail-group-items {
  display: grid;
  gap: 3px;
  margin: 0;
  padding: 4px 0 0 8px;
}
#manageRail .manage-rail-group-items .manage-rail-btn {
  height: 30px;
  max-height: 30px;
  padding-inline: 8px 4px;
  font-size: .72rem;
  line-height: 28px;
}
/* separator for future button groups */
#manageRail .manage-rail-sep { flex: 0 0 auto; height: 1px; margin: 4px 2px; background: var(--bd, #e2e8f0); }

/* 分区标题：只是一条标签，不可点击；第一条不再往上留白 */
#manageRail .manage-rail-section {
  flex: 0 0 auto;
  margin: 10px 0 2px;
  padding: 0 10px 6px;
  border-bottom: 1px solid var(--bd, #e2e8f0);
  color: var(--t3, #86868B);
  font-size: .66rem;
  font-weight: 800;
  letter-spacing: .06em;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  user-select: none;
}
#manageRail .manage-rail-section:first-child { margin-top: 0; }

body.dark #manageRail.manage-rail { background: rgba(15, 23, 42, 0.94); border-right-color: #334155; }
body.dark #manageRailToggle.manage-rail-toggle { background:#111827;color:#cbd5e1;border-color:#334155; }
body.dark #manageRail .manage-rail-btn { color: #cbd5e1; }
body.dark #manageRail .manage-rail-btn:hover { background: #1e293b; color: #f1f5f9; }
body.dark #manageRail .manage-rail-btn.a { background: #f59e0b; color: #111827; }
body.dark #manageRail .manage-rail-sep { background: #334155; }
body.dark #manageRail .manage-rail-section { color: #94a3b8; border-bottom-color: #334155; }