.shell { display: grid; grid-template-columns: var(--nav-w) minmax(0, 1fr); gap: var(--grid-gap); padding: var(--grid-gap); min-height: 100%; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-widget); }

/* navigation */
.nav { display: flex; flex-direction: column; gap: var(--sp-1); padding: var(--sp-3); height: calc(100vh - 2 * var(--grid-gap)); position: sticky; top: var(--grid-gap); }
.brand { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-2) var(--sp-3) var(--sp-4); font-weight: 600; font-size: var(--fs-lg); }
.brand-mark { width: 28px; height: 28px; border-radius: 8px; background: var(--accent); color: var(--on-accent); display: grid; place-items: center; font-size: var(--fs-sm); font-weight: 600; }
.nav-item { display: flex; align-items: center; gap: var(--sp-3); height: var(--row-h); padding: 0 var(--sp-3); border: 0; border-radius: var(--radius-control);
  background: transparent; color: var(--muted); text-align: left; text-decoration: none; transition: background var(--motion), color var(--motion); }
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item[aria-current="page"] { background: var(--surface-2); color: var(--text); box-shadow: inset 2px 0 0 var(--accent); }
.nav-spacer { flex: 1; }

/* top bar and content */
.main { display: flex; flex-direction: column; gap: var(--grid-gap); min-width: 0; }
.topbar { display: flex; align-items: center; gap: var(--sp-3); height: var(--top-h); padding: 0 var(--sp-3) 0 var(--sp-4); }
.search { flex: 1; max-width: 520px; display: flex; align-items: center; gap: var(--sp-2); height: 36px; padding: 0 var(--sp-3);
  background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius-control); color: var(--muted); }
.search input { flex: 1; min-width: 0; background: transparent; border: 0; outline: 0; color: var(--text); }
.search kbd { font: 500 var(--fs-xs) var(--font); padding: 1px 6px; border: 1px solid var(--line); border-radius: 4px; }
.topbar-spacer { flex: 1; }
.icon-btn { position: relative; width: 36px; height: 36px; display: grid; place-items: center; border: 1px solid transparent; border-radius: var(--radius-control);
  background: transparent; color: var(--muted); }
.icon-btn:hover { background: var(--surface-2); color: var(--text); }
.icon-btn .dot { position: absolute; top: 2px; right: 0; min-width: 16px; height: 16px; padding: 0 4px; border-radius: 8px; background: var(--accent); color: var(--on-accent);
  font-size: 11px; font-weight: 600; line-height: 16px; text-align: center; }
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--line); display: grid; place-items: center; font-weight: 600; font-size: var(--fs-sm); }

.greeting { padding: var(--sp-4) var(--sp-5); display: flex; align-items: baseline; justify-content: space-between; gap: var(--sp-4); flex-wrap: wrap; }
.greeting h1 { font-size: var(--fs-xl); font-weight: 600; }
.greeting p { color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(12, minmax(0, 1fr)); gap: var(--grid-gap); align-items: start; }
.span-3 { grid-column: span 3; } .span-4 { grid-column: span 4; } .span-5 { grid-column: span 5; } .span-6 { grid-column: span 6; } .span-7 { grid-column: span 7; }
@media (max-width: 1180px) { .span-3, .span-4, .span-5 { grid-column: span 6; } .span-7 { grid-column: span 12; } }
}

.view { display: flex; flex-direction: column; gap: var(--grid-gap); min-width: 0; }
.span-8 { grid-column: span 8; } .span-12 { grid-column: span 12; }
.page-pad { padding: var(--sp-5); }
.plugin-page { min-height: 240px; padding: var(--sp-5); }
.notif { padding: var(--sp-4); max-width: 420px; align-self: flex-end; margin-top: calc(-1 * var(--grid-gap) + var(--sp-2)); position: relative; z-index: 5; }
.widget-body { min-width: 0; }
.nav-item[aria-current="page"] { background: var(--surface-2); color: var(--text); box-shadow: inset 2px 0 0 var(--accent); }

/* ---- the canvas of the main page ---- */
:root { --canvas-row: 36px; }
.canvas-bar { display: flex; align-items: center; gap: var(--sp-3); min-height: 36px; flex-wrap: wrap; }
.canvas-bar .grow { flex: 1; }
.canvas { position: relative; display: grid; grid-template-columns: repeat(24, minmax(0, 1fr)); grid-auto-rows: var(--canvas-row); gap: var(--grid-gap);
  min-height: calc(var(--rows, 8) * (var(--canvas-row) + var(--grid-gap))); align-content: start; }
.block { grid-column: calc(var(--x, 0) + 1) / span var(--w, 6); grid-row: calc(var(--y, 0) + 1) / span var(--h, 4); position: relative; display: flex; flex-direction: column;
  min-width: 0; min-height: 0; padding: 0; overflow: hidden; transition: none; }
.canvas.editing .block { transition: grid-row var(--motion), grid-column var(--motion); }
.block-head { display: flex; align-items: center; gap: var(--sp-2); padding: 0 var(--sp-4); min-height: 40px; color: var(--muted); font-size: var(--fs-sm); font-weight: 500; flex: none; }
.block.no-header:not(.dragging) .block-head { display: none; }
.canvas.editing .block.no-header .block-head { display: flex; }
.block-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.block-tools { display: none; gap: 2px; }
.canvas.editing .block-tools { display: inline-flex; }
.block-body { flex: 1; min-height: 0; overflow: auto; padding: 0 var(--sp-4) var(--sp-4); }
.block.no-header .block-body { padding-top: var(--sp-4); }
.canvas.editing .block { outline: 1px dashed var(--line); cursor: default; }
.canvas.editing .block-head { cursor: grab; background: var(--surface-2); }
.canvas.editing .block.dragging { z-index: 6; opacity: 0.92; cursor: grabbing; box-shadow: 0 8px 28px rgb(0 0 0 / 0.35); }
.canvas.editing .block.dragging .block-head { cursor: grabbing; }
.canvas.editing .block-body { pointer-events: none; user-select: none; }
.placeholder { grid-column: 1; grid-row: 1; background: var(--accent); opacity: 0.16; border: 1px dashed var(--accent); border-radius: var(--radius-widget); pointer-events: none; }
.rz { display: none; position: absolute; z-index: 3; touch-action: none; }
.canvas.editing .rz { display: block; }
.rz-e { top: 0; right: 0; bottom: 0; width: 8px; cursor: ew-resize; }
.rz-s { left: 0; right: 0; bottom: 0; height: 8px; cursor: ns-resize; }
.rz-se { right: 0; bottom: 0; width: 18px; height: 18px; cursor: nwse-resize; border-right: 3px solid var(--accent); border-bottom: 3px solid var(--accent); border-bottom-right-radius: 6px; }
/* a notebook sheet behind the blocks while editing: one cell is one column and one row */
.canvas.editing { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3E%3Cpath d='M0 0h10M0 0v10' stroke='%23ffffff' stroke-opacity='0.08' fill='none'/%3E%3C/svg%3E");
  background-size: calc((100% + var(--grid-gap)) / 24) calc(var(--canvas-row) + var(--grid-gap)); background-position: calc(var(--grid-gap) / -2) calc(var(--grid-gap) / -2); border-radius: var(--radius-widget); }
:root[data-theme="day"] .canvas.editing { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3E%3Cpath d='M0 0h10M0 0v10' stroke='%23000000' stroke-opacity='0.10' fill='none'/%3E%3C/svg%3E"); }
.empty-canvas::after { content: attr(data-empty); }
.catalog-item { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-3); border: 1px solid var(--line); border-radius: var(--radius-control); }
.catalog-item .grow { flex: 1; min-width: 0; }
.small-gap { gap: var(--sp-2); }
@media (max-width: 800px) {
  .canvas { grid-template-columns: 1fr; grid-auto-rows: auto; min-height: 0; }
  .block { grid-column: 1; grid-row: auto; min-height: calc(var(--h, 4) * var(--canvas-row)); }
  .canvas-bar { display: none; }
}

/* ---- the navigation panel in its short form ---- */
.nav-toggle { margin-left: auto; }
.nav.compact { width: 64px; padding: var(--sp-2); }
.nav.compact .label, .nav.compact .brand-mark + .label { display: none; }
.nav.compact .brand { padding: var(--sp-2) 0 var(--sp-3); flex-direction: column; gap: var(--sp-2); justify-content: center; }
.nav.compact .nav-toggle { margin: 0; }
.nav.compact .nav-item { justify-content: center; padding: 0; }
.shell:has(.nav.compact) { grid-template-columns: 64px minmax(0, 1fr); }

/* ---- top bar: title, search, page actions, account ---- */
.page-title { font-size: var(--fs-lg); font-weight: 600; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.page-actions { display: inline-flex; align-items: center; gap: var(--sp-2); }
.topsearch { display: flex; align-items: center; gap: var(--sp-2); height: 36px; padding: 0 var(--sp-3); min-width: 220px; max-width: 360px; flex: 0 1 320px;
  background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius-control); color: var(--muted); text-align: left; }
.topsearch:hover { color: var(--text); border-color: var(--muted); }
.topsearch-text { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.topsearch kbd { font: 500 var(--fs-xs) var(--font); padding: 1px 6px; border: 1px solid var(--line); border-radius: 4px; }
.avatar { cursor: pointer; color: var(--text); }
.avatar:hover { border-color: var(--accent); }
body.editing-main .topbar { border-color: var(--accent); box-shadow: inset 0 -2px 0 var(--accent); }
.edit-badge { display: inline-flex; align-items: center; gap: var(--sp-2); color: var(--accent); font-weight: 600; font-size: var(--fs-sm); }

/* popover menu */
.menu { position: fixed; z-index: 30; min-width: 220px; padding: var(--sp-2); display: flex; flex-direction: column; gap: 2px; box-shadow: 0 10px 30px rgb(0 0 0 / 0.35); }
.menu-item { display: flex; align-items: center; gap: var(--sp-3); height: 40px; padding: 0 var(--sp-3); border: 0; border-radius: var(--radius-control); background: transparent; color: var(--text); text-align: left; }
.menu-item:hover, .menu-item:focus-visible { background: var(--surface-2); outline: 0; }
.menu-header { display: flex; flex-direction: column; padding: var(--sp-2) var(--sp-3) var(--sp-3); }
.menu-divider { border: 0; border-top: 1px solid var(--line); margin: var(--sp-1) 0; }

/* command palette */
.palette-host { position: fixed; inset: 0; z-index: 40; display: flex; justify-content: center; align-items: flex-start; padding-top: 12vh; }
.scrim.shown { opacity: 1; pointer-events: auto; position: fixed; inset: 0; }
.palette { position: relative; width: min(620px, calc(100vw - 24px)); max-height: 70vh; display: flex; flex-direction: column; box-shadow: 0 20px 60px rgb(0 0 0 / 0.5); }
.palette-field { display: flex; align-items: center; gap: var(--sp-3); padding: 0 var(--sp-4); height: 52px; border-bottom: 1px solid var(--line); color: var(--muted); }
.palette-input { flex: 1; min-width: 0; background: transparent; border: 0; outline: 0; color: var(--text); font-size: var(--fs-md); }
.palette-list { list-style: none; margin: 0; padding: var(--sp-2); overflow: auto; }
.palette-group { padding: var(--sp-3) var(--sp-3) var(--sp-1); font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); }
.palette-item { display: flex; align-items: center; gap: var(--sp-3); height: 40px; padding: 0 var(--sp-3); border-radius: var(--radius-control); cursor: pointer; }
.palette-item.active { background: var(--surface-2); box-shadow: inset 2px 0 0 var(--accent); }
.palette-empty { padding: var(--sp-5); color: var(--muted); text-align: center; }

/* the canvas in edit mode */
.edit-bar-row { display: flex; }
.canvas-bar { position: sticky; top: var(--grid-gap); z-index: 4; padding: var(--sp-2) var(--sp-3); background: var(--surface); border: 1px solid var(--accent); border-radius: var(--radius-widget); }
.canvas-bar[hidden] { display: none; }
.block-grip { display: none; color: var(--muted); }
.canvas.editing .block-grip { display: inline-grid; cursor: grab; }
.canvas.editing .block-head:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.add-slot { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--sp-2); background: transparent; border: 2px dashed var(--line); border-radius: var(--radius-widget); color: var(--muted); }
.add-slot:hover { border-color: var(--accent); color: var(--text); }

/* phone: a tab bar at the bottom, blocks as tall as their content */
.tabbar { display: none; }
@media (max-width: 800px) {
  .shell { grid-template-columns: minmax(0, 1fr); padding: var(--sp-3); padding-bottom: calc(64px + var(--sp-3)); }
  .main { grid-column: 1; }
  .nav { display: none; }
  .tabbar { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 12; background: var(--surface); border-top: 1px solid var(--line); padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); }
  .tab { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px; min-height: 48px; padding: 4px 2px; border: 0; background: transparent; color: var(--muted); text-decoration: none; font-size: 11px; border-radius: var(--radius-control); }
  .tab span { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .tab[aria-current="page"] { color: var(--text); box-shadow: inset 0 2px 0 var(--accent); }
  .topsearch { min-width: 0; flex: 0 0 36px; width: 36px; padding: 0; justify-content: center; }
  .topsearch-text, .topsearch kbd { display: none; }
  .page-title { font-size: var(--fs-md); }
  .block { min-height: 0; }
  .block-body { min-height: 80px; max-height: 70vh; }
}

/* a block without a title bar keeps its content in edit mode: the bar floats over it */
.canvas.editing .block.no-header .block-head { position: absolute; top: 0; left: 0; right: 0; z-index: 2; min-height: 32px; opacity: 0.94; }

.view-root { display: flex; flex-direction: column; gap: var(--grid-gap); min-width: 0; }
.update-bar { position: fixed; left: 50%; top: var(--sp-3); transform: translateX(-50%); z-index: 25; display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3) var(--sp-2) var(--sp-4); background: var(--surface); border: 1px solid var(--accent); border-radius: var(--radius-widget); box-shadow: 0 8px 24px rgb(0 0 0 / 0.35); }
.skeleton { background: var(--surface); opacity: 0.6; animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 0.35; } 50% { opacity: 0.7; } }
@media (prefers-reduced-motion: reduce) { .skeleton { animation: none; } }