/* App shell (spec 4): sidebar and tablet rail, page bar, phone top bar and tab bar, More sheet, shell modes and the
   boot skeleton. Tokens come from ui-kit.css; no colour literals here. Owner: shell and journey. */

html:root{background:var(--bg);color:var(--text-1);--sticky-top:52px}
body{margin:0;background:var(--bg);color:var(--text-1);min-height:100dvh}
.skip{position:fixed;top:-100px;left:16px;z-index:100;padding:10px 14px;border-radius:var(--r-md);background:var(--gray-900);color:var(--gray-0);font:var(--t-ui);text-decoration:none}
.skip:focus{top:12px}

/* ---------------------------------------------------------------- frame */
.shell{display:grid;grid-template-columns:256px minmax(0,1fr);min-height:100dvh}
.frame{display:flex;flex-direction:column;min-width:0}
main{box-sizing:border-box;width:100%;max-width:1200px;margin:0 auto;padding:28px 40px 72px;align-self:start;flex:1}
main:focus{outline:none}
.shell-banner{box-sizing:border-box;width:100%;max-width:1200px;margin:16px auto 0;padding:0 40px}

/* -------------------------------------------------------------- sidebar */
.sidebar{position:sticky;top:0;z-index:var(--z-nav);display:flex;flex-direction:column;height:100dvh;background:var(--canvas);border-right:1px solid var(--border);box-sizing:border-box}
.sidebar__head{display:flex;flex-direction:column;gap:6px;padding:8px 8px 4px}
.workspace-slot{min-height:44px}
/* The work-account surface draws the row (spec 8.3); inside the sidebar it keeps to the 44px row and fits the full name. */
#workspace-slot .wa-wsm__row{min-height:44px;gap:8px;padding:6px 6px;border-radius:var(--r-sm)}
#workspace-slot .wa-wsm__tile{box-shadow:0 0 0 1px var(--plate-ring)}
#workspace-slot .wa-wsm__app{letter-spacing:-.012em}
#workspace-slot .wa-wsm__chev{flex:none;width:14px;height:14px}
#workspace-slot .wa-wsm__row .uk-count{flex:none}
.workspace-row{appearance:none;display:flex;align-items:center;gap:8px;width:100%;height:44px;margin:0;padding:0 6px;border:0;border-radius:var(--r-sm);background:transparent;color:var(--text-1);font:inherit;text-align:left;text-decoration:none;cursor:pointer;transition:background-color var(--dur-2) var(--ease-out)}
.workspace-row:hover,.workspace-row[aria-expanded=true]{background:var(--hover)}
.workspace-row__tile{flex:none;width:28px;height:28px;border-radius:var(--r-sm);box-shadow:0 0 0 1px var(--plate-ring)}
.workspace-row__text{display:flex;flex-direction:column;min-width:0;flex:1}
.workspace-row__name{font:600 14px/18px var(--font-sans);letter-spacing:-.012em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.workspace-row__sub{font:500 12px/16px var(--font-sans);color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.workspace-row__skel{display:block;width:96px;height:10px;margin-top:3px}
.workspace-row__chev{flex:none;width:14px;height:14px;color:var(--text-3)}
.workspace-menu{display:block}
.workspace-menu__panel{min-width:224px}

.sidebar-search{appearance:none;display:flex;align-items:center;gap:8px;width:100%;height:36px;margin:0;padding:0 8px 0 10px;border:1px solid var(--border);border-radius:var(--r-md);background:var(--surface);box-shadow:var(--shadow-xs);color:var(--text-3);font:400 14px/20px var(--font-sans);letter-spacing:-.003em;text-align:left;cursor:pointer;transition:border-color var(--dur-2) var(--ease-out),color var(--dur-2) var(--ease-out)}
.sidebar-search:hover{border-color:var(--border-strong);color:var(--text-2)}
.sidebar-search__icon{flex:none}
.sidebar-search__text{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sidebar-search__kbd{flex:none}

.sidebar__nav{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;padding:6px 8px 6px;scrollbar-width:none}
.sidebar__nav::-webkit-scrollbar{display:none}
.nav-group+.nav-group{margin-top:10px}
.nav-group__label{margin:0 0 2px;padding:0 10px;font:500 12px/20px var(--font-sans);letter-spacing:0;color:var(--text-3)}
.nav-item{appearance:none;position:relative;box-sizing:border-box;display:flex;align-items:center;gap:10px;width:100%;height:34px;margin:0;padding:0 10px;border:0;border-radius:var(--r-sm);background:transparent;color:var(--text-2);font:500 14px/20px var(--font-sans);letter-spacing:-.003em;text-align:left;text-decoration:none;cursor:pointer;transition:background-color 200ms var(--ease-out),color 200ms var(--ease-out)}
.nav-item:hover{background:var(--hover);color:var(--text-1);transition-duration:var(--dur-2)}
.nav-item:active{background:var(--pressed)}
.nav-item__icon{flex:none;color:var(--text-3);transition:color var(--dur-2) var(--ease-out)}
.nav-item:hover .nav-item__icon{color:var(--text-2)}
.nav-item__label{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-item__meta{display:inline-flex;align-items:center;gap:4px;margin-left:auto;font:500 12px/16px var(--font-sans);color:var(--text-3);font-variant-numeric:tabular-nums}
.nav-item__meta:empty{display:none}
.nav-item__link{color:var(--link);font:500 12px/16px var(--font-sans)}
.nav-item__lock{display:inline-grid;place-items:center;color:var(--text-3)}
.nav-item__mark{display:inline-flex}
.nav-item[aria-current=page]{background:var(--selected-bg);color:var(--green-900)}
.nav-item[aria-current=page] .nav-item__icon{color:var(--green-500);stroke-width:1.9}
.nav-item[aria-current=page] .nav-item__meta{color:var(--green-700)}
.nav-item.is-parent{color:var(--text-1)}
.nav-item.is-parent .nav-item__icon{color:var(--green-500)}
.nav-item--child{height:30px;padding-left:40px;font-size:13px}

.nav-stages,.nav-children{display:grid;grid-template-rows:0fr;transition:grid-template-rows var(--dur-4) var(--ease-in-out)}
.nav-stages.is-open,.nav-children.is-open{grid-template-rows:1fr}
.nav-stages__inner,.nav-children__inner{min-height:0;overflow:hidden;visibility:hidden;transition:visibility 0s linear var(--dur-4)}
.is-open>.nav-stages__inner,.is-open>.nav-children__inner{visibility:visible;transition-delay:0s}
.nav-stages__list{position:relative;padding:2px 0 4px}
.nav-stages__list::before{content:"";position:absolute;left:19.5px;top:2px;bottom:10px;width:1px;background:var(--border)}
.nav-stage{position:relative;display:flex;align-items:center;gap:9px;height:28px;margin:0;padding:0 8px 0 30px;border-radius:var(--r-sm);color:var(--text-2);font:500 13px/18px var(--font-sans);text-decoration:none;transition:background-color var(--dur-2) var(--ease-out),color var(--dur-2) var(--ease-out)}
.nav-stage:hover{background:var(--hover);color:var(--text-1)}
.nav-stage .uk-stage-art{box-shadow:0 0 0 1px var(--plate-ring)}
.nav-stage__label{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav-stage .uk-ring{flex:none}
.nav-stage.is-in{color:var(--text-1)}
.nav-stage[aria-current=page]{background:var(--selected-bg);color:var(--green-900)}
.nav-stage--skeleton{pointer-events:none}
.nav-stage--skeleton .uk-skel:first-child{width:18px;height:18px;border-radius:5px}
.nav-stage--skeleton .uk-skel:last-child{width:90px;height:10px}

.sidebar__foot{padding:6px 8px 10px;border-top:1px solid var(--border)}
.sidebar__note{display:flex;flex-wrap:nowrap;align-items:center;gap:6px;margin:4px 10px 0;white-space:nowrap;overflow:hidden;font:500 12px/16px var(--font-sans);color:var(--text-3)}
.sidebar__dot{flex:none;width:2px;height:2px;border-radius:var(--r-full);background:currentColor}
.notion-home{display:inline-flex;align-items:center;gap:2px;color:var(--text-3);text-decoration:none;border-radius:var(--r-2xs)}
.notion-home:hover{color:var(--text-1)}

/* ---------------------------------------------------------------- rail */
body.is-rail .shell{grid-template-columns:64px minmax(0,1fr)}
body.is-rail .sidebar__head,body.is-rail .sidebar__nav,body.is-rail .sidebar__foot{padding-left:10px;padding-right:10px}
body.is-rail .workspace-row,body.is-rail #workspace-slot .wa-wsm__row{justify-content:center;padding:0}
body.is-rail #workspace-slot .wa-wsm__text,body.is-rail #workspace-slot .wa-wsm__chev,body.is-rail #workspace-slot .wa-wsm__row .uk-count{display:none}
body.is-rail .workspace-row__text,body.is-rail .workspace-row__chev,body.is-rail .sidebar-search__text,body.is-rail .sidebar-search__kbd,
body.is-rail .nav-item__label,body.is-rail .nav-item__meta,body.is-rail .nav-group__label,body.is-rail .nav-stages,body.is-rail .nav-children,body.is-rail .sidebar__note{display:none}
body.is-rail .sidebar-search{justify-content:center;padding:0;border-color:transparent;background:transparent;box-shadow:none}
body.is-rail .sidebar-search:hover{background:var(--hover)}
body.is-rail .nav-item{justify-content:center;padding:0;height:40px}
body.is-rail .nav-group+.nav-group{margin-top:8px;padding-top:8px;border-top:1px solid var(--border)}
body.is-rail .nav-item.is-parent{background:var(--selected-bg)}

/* ------------------------------------------------------------ page bar */
.pagebar{position:sticky;top:0;z-index:var(--z-sticky);display:flex;align-items:center;gap:8px;height:52px;padding:0 24px 0 12px;box-sizing:border-box;background:var(--frost-bg);-webkit-backdrop-filter:var(--frost-filter);backdrop-filter:var(--frost-filter);box-shadow:inset 0 -1px 0 transparent;transition:box-shadow var(--dur-3) var(--ease-out)}
body[data-scrolled] .pagebar{box-shadow:inset 0 -1px 0 var(--frost-border)}
.pagebar__rail{color:var(--text-3)}
.pagebar__crumbs{flex:1;min-width:0}
.pagebar__crumbs .uk-crumbs ol{flex-wrap:nowrap;overflow:hidden}
.pagebar__crumbs .uk-crumbs li{white-space:nowrap}
.pagebar__crumbs .uk-crumbs li:last-child span{overflow:hidden;text-overflow:ellipsis}
.pagebar__actions{display:flex;align-items:center;gap:8px;flex:none}

/* ------------------------------------------------- phone top and tab bar */
.topbar,.tabbar{display:none}
.phone-actions{display:none}

@media (max-width:767px){
  .shell{display:block}
  .sidebar,.pagebar{display:none}
  main{padding:12px 16px calc(88px + env(safe-area-inset-bottom))}
  .shell-banner{margin-top:12px;padding:0 16px}
  :root{--toast-offset:68px}
  .topbar{position:sticky;top:0;z-index:var(--z-nav);display:grid;grid-template-columns:88px minmax(0,1fr) 88px;align-items:center;height:52px;padding:0 8px;box-sizing:border-box;background:var(--frost-bg);-webkit-backdrop-filter:var(--frost-filter);backdrop-filter:var(--frost-filter);box-shadow:inset 0 -1px 0 transparent;transition:box-shadow var(--dur-3) var(--ease-out)}
  body[data-scrolled] .topbar{box-shadow:inset 0 -1px 0 var(--frost-border)}
  .topbar__lead{display:flex;align-items:center}
  .topbar__home{display:grid;place-items:center;width:44px;height:44px;border-radius:var(--r-md)}
  .topbar__home img{border-radius:7px;box-shadow:0 0 0 1px var(--plate-ring)}
  .topbar__home[hidden],.topbar__back[hidden]{display:none}
  .topbar__back,.topbar__button{appearance:none;display:grid;place-items:center;width:44px;height:44px;margin:0;padding:0;border:0;border-radius:var(--r-md);background:transparent;color:var(--text-1);cursor:pointer}
  .topbar__back{margin-left:-6px;color:var(--link)}
  .topbar__button:active,.topbar__back:active{background:var(--pressed)}
  .topbar__title{margin:0;text-align:center;font:var(--t-topbar);letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;opacity:0;transform:translateY(4px);transition:opacity var(--dur-3) var(--ease-out),transform var(--dur-3) var(--ease-out)}
  .topbar.has-title .topbar__title{opacity:1;transform:none}
  .topbar__actions{display:flex;justify-content:flex-end}
  .tabbar{position:fixed;left:0;right:0;bottom:0;z-index:var(--z-nav);display:grid;grid-template-columns:repeat(5,minmax(0,1fr));height:calc(56px + env(safe-area-inset-bottom));padding:0 4px env(safe-area-inset-bottom);box-sizing:border-box;background:var(--frost-bg);-webkit-backdrop-filter:var(--frost-filter);backdrop-filter:var(--frost-filter);box-shadow:inset 0 1px 0 var(--frost-border)}
  .tab{appearance:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-width:0;height:56px;margin:0;padding:0;border:0;background:transparent;color:var(--text-3);font:600 11px/14px var(--font-sans);letter-spacing:.01em;text-decoration:none;cursor:pointer;-webkit-tap-highlight-color:transparent}
  .tab__icon{transition:transform var(--dur-1) var(--ease-out)}
  .tab:active .tab__icon{transform:scale(.92)}
  .tab.is-active{color:var(--green-700)}
  .tab.is-active .tab__icon{stroke-width:1.9}
  .phone-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
  .phone-actions[hidden]{display:none}
  /* A control scrolled into view (focus, validation, Tab, an anchor) stops clear of the sticky top bar and the fixed tab bar.
     New flow only (backend/flow.mjs; app.js sets the class): a main-era workspace scrolls exactly as on origin/main. */
  html.is-new-flow{scroll-padding-block:calc(52px + 12px) calc(56px + env(safe-area-inset-bottom) + 16px)}
}

/* ------------------------------------------------------------ shell modes */
body.is-onboarding .sidebar,body.is-onboarding .pagebar,body.is-onboarding .topbar,body.is-onboarding .tabbar{display:none}
body.is-onboarding .shell{grid-template-columns:minmax(0,1fr)}
body.is-onboarding main{max-width:none}
/* An editor in focus mode owns its own bar, the way the focused setup shell does: one top bar, one Back control. */
body.is-focus-mode .topbar,body.is-focus-mode .tabbar{display:none}
body.is-focus-mode main{max-width:none}
/* With the shell's own bars gone on a phone, nothing is stuck at the top of the viewport: an editor's sticky bar
   starts at 0, instead of leaving a 52px band where the hidden bar used to be. */
@media (max-width:767px){
  body.is-focus-mode{--sticky-top:0px}
  body.is-focus-mode main{padding-bottom:32px}
}

/* ------------------------------------------------------------ More sheet */
.more-account{display:flex;align-items:center;gap:12px;padding:4px 0 16px;border-bottom:1px solid var(--border)}
.more-account__text{flex:1;min-width:0}
.more-account__name{margin:0;font:600 15px/20px var(--font-sans);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.more-account__sub{margin:0;font:500 13px/18px var(--font-sans);color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.more-list{display:flex;flex-direction:column;padding-top:8px}
.more-row{appearance:none;display:flex;align-items:center;gap:14px;width:100%;min-height:48px;margin:0;padding:0 4px;border:0;border-radius:var(--r-md);background:transparent;color:var(--text-1);font:500 15px/20px var(--font-sans);text-align:left;text-decoration:none;cursor:pointer}
.more-row>.uk-icon:first-child{color:var(--text-2)}
.more-row:active{background:var(--pressed)}
.more-row__label{flex:1}
.more-row__meta{display:inline-flex}
.more-row__chev{color:var(--gray-400)}
.more-row--danger,.more-row--danger>.uk-icon:first-child{color:var(--danger-text)}

/* ------------------------------------------------------------ boot and loading */
.boot-skeleton{display:flex;flex-direction:column;gap:24px}
.boot-skeleton__head{display:flex;flex-direction:column;gap:12px;padding-top:12px}
.boot-skeleton__cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.boot-skeleton__cards .uk-skel{height:184px;border-radius:var(--r-lg)}
.boot-skeleton__rail{height:168px;border-radius:var(--r-lg)}
.boot-skeleton__rows{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.boot-skeleton__rows .uk-skel{height:64px;border-radius:var(--r-lg)}
.boot-skeleton .uk-skel,.nav-stage--skeleton .uk-skel,.workspace-row__skel{display:block}
@media (max-width:767px){.boot-skeleton__cards,.boot-skeleton__rows{grid-template-columns:1fr}.boot-skeleton__cards .uk-skel:nth-child(n+2){display:none}}

/* The shared "fictional example" banner. Program surfaces render it above their page head, so it carries its own
   bottom margin; its colour and shape come from the kit's neutral banner, the same one the tools render. */
.uk-banner.demo-example{margin:0 0 16px}