/*
  The "app" look. Load after kit.css. It does nothing until <html data-look="app"> is set, so pages that do not set it
  (tenants, the trials) are unchanged. Colours, radii and shadows come from the pick beside it: shapes/app.json and
  palettes/app-teal.json or app-indigo.json. This file holds what belongs to no shape or palette: the type scale, the
  size of touch controls, and the rules that redraw components (below the tokens).
  Only var(--*) here: no colour literals (grep -cE '#[0-9a-fA-F]{3,8}\b' look-app.css must print 0).
*/

:root[data-look="app"] {
  /* Type: 12 / 14 / 16 / 18 / 20 / 24 / 32, plus two sizes for figures. 13 and 15 are gone, so a screen has two body sizes, not four. */
  --fs-xs: 12px;
  --fs-sm: 14px;
  --fs-md: 16px;
  --fs-base: 16px;
  --fs-lg: 18px;
  --fs-xl: 20px;
  --fs-2xl: 24px;
  --fs-3xl: 32px;
  --fs-display: 44px;
  --fs-figure: 56px;

  /* Lines are 1.5px, and edges do the work shadows did. */
  --border-w: 1.5px;

  /* Phone gutter, the disc behind an icon, a control under a thumb, one more step of space. */
  --page-x: var(--sp-5);
  --icon-chip: 40px;
  --control-h-touch: 52px;
  --sp-10: 56px;
}

/* ---------------------------------------------------------------------------
   Step 2: controls. A rule falls back to a neutral token where a palette does not set the tint tokens
   (primary-tint, primary-tint-line, on-primary-tint), so the look still reads under another palette.
   --------------------------------------------------------------------------- */

/* Buttons: pill, 1.5px edge. Heights 40 / 48 / 56; 52 under a thumb. */
:root[data-look="app"] .btn:not(.btn-link) {
  min-height: calc(var(--tap) + var(--sp-1));
  padding-inline: var(--sp-5);
  border-width: var(--border-w);
  border-radius: var(--radius-pill);
}
:root[data-look="app"] .btn-sm:not(.btn-link) { min-height: calc(var(--tap) - var(--sp-1)); padding-inline: var(--sp-4); }
:root[data-look="app"] .btn-lg:not(.btn-link) { min-height: calc(var(--tap) + var(--sp-3)); padding-inline: var(--sp-6); }
:root[data-look="app"] .btn-icon:not(.btn-link) { width: calc(var(--tap) + var(--sp-1)); padding: 0; }
:root[data-look="app"] .btn-icon.btn-sm:not(.btn-link) { width: calc(var(--tap) - var(--sp-1)); }
:root[data-look="app"] .btn-icon.btn-lg:not(.btn-link) { width: calc(var(--tap) + var(--sp-3)); }

/* A group of buttons stays one pill: only the outer ends are round. */
:root[data-look="app"] .btn-group .btn:not(:first-child):not(.btn-link) { border-top-left-radius: 0; border-bottom-left-radius: 0; }
:root[data-look="app"] .btn-group .btn:not(:last-child):not(.btn-link) { border-top-right-radius: 0; border-bottom-right-radius: 0; }

/* The main button carries the brand colour's glow; a small one and a disabled one do not. */
:root[data-look="app"] .btn-primary:not(.btn-sm):not(:disabled):not([aria-disabled="true"]) { box-shadow: var(--sh-brand, none); }
:root[data-look="app"] .btn-primary:not(.btn-sm):not(:disabled):not([aria-disabled="true"]):active { box-shadow: none; }

/* Tonal: the second kind of button, a tint of the brand colour with no edge. New class, only in this look. */
:root[data-look="app"] .btn-tonal:not(:disabled):not([aria-disabled="true"]) {
  color: var(--on-primary-tint, var(--primary));
  background: var(--primary-tint, var(--notice-bg));
  border-color: transparent;
}
:root[data-look="app"] .btn-tonal:not(:disabled):not([aria-disabled="true"]):hover,
:root[data-look="app"] .btn-tonal:not(:disabled):not([aria-disabled="true"]):active {
  background: var(--primary-tint-line, var(--sunk));
  border-color: transparent;
}

/* Fields: a light fill at rest, white while typing, 1.5px edge. */
:root[data-look="app"] .input,
:root[data-look="app"] .select,
:root[data-look="app"] .textarea {
  min-height: calc(var(--tap) + var(--sp-1));
  border-width: var(--border-w);
}
:root[data-look="app"] .textarea { min-height: calc(var(--tap) * 2); }
:root[data-look="app"] .input:not(:disabled):not([readonly]):not(:focus-visible),
:root[data-look="app"] .select:not(:disabled):not(:focus-visible),
:root[data-look="app"] .textarea:not(:disabled):not([readonly]):not(:focus-visible) { background-color: var(--surface-2); }

/* Tags: a status tag loses its edge and gains a dot (unless it has an icon), so the word is not alone in a colour. */
:root[data-look="app"] .tag { padding-inline: calc(var(--sp-2) + 2px); }
:root[data-look="app"] :is(.tag-ok, .tag-warn, .tag-bad, .tag-info):not(.tag-solid):not(.tag-bare) { border-color: transparent; }
:root[data-look="app"] :is(.tag-ok, .tag-warn, .tag-bad, .tag-info):not(.tag-solid):not(.tag-bare):not(:has(.icon))::before {
  content: "";
  flex: none;
  width: 0.5em;
  height: 0.5em;
  background: currentColor;
  border-radius: 50%;
}

/* Chips and the segmented control: the chosen one is filled with the brand colour. */
:root[data-look="app"] .chip { border-width: var(--border-w); padding-inline: var(--sp-4); }
:root[data-look="app"] .seg { background: var(--surface-2); border: var(--border-w) solid var(--panel-border); }
:root[data-look="app"] .seg-item[aria-checked="true"] { color: var(--on-primary); background: var(--primary); box-shadow: none; }
:root[data-look="app"] .tabs-pill .tab[aria-selected="true"],
:root[data-look="app"] .tabs-pill .tab[aria-current="page"] {
  color: var(--on-primary-tint, var(--text));
  background: var(--primary-tint, var(--surface));
  box-shadow: none;
}

/* The bar at a card's left edge is gone (it bent on round corners and said the state in colour). A notice keeps its tint and edge;
   a KPI tones its icon disc; a work row that needs attention takes a tinted ground, and its tag still says why. */
:root[data-look="app"] .notice { box-shadow: none; border-width: var(--border-w); border-radius: var(--radius-lg); }
:root[data-look="app"] .kpi[data-tone] { box-shadow: var(--sh-1); }
:root[data-look="app"] .kpi-icon {
  width: var(--icon-chip);
  height: var(--icon-chip);
  color: var(--on-primary-tint, var(--muted));
  background: var(--primary-tint, var(--surface-2));
  border-radius: 50%;
}
:root[data-look="app"] .kpi[data-tone="ok"] .kpi-icon { color: var(--ok); background: var(--ok-bg); }
:root[data-look="app"] .kpi[data-tone="warn"] .kpi-icon { color: var(--warn); background: var(--warn-bg); }
:root[data-look="app"] .kpi[data-tone="danger"] .kpi-icon { color: var(--danger); background: var(--danger-bg); }
:root[data-look="app"] .work-row { box-shadow: none; }
:root[data-look="app"] .work-row[data-tone="warn"] { background: var(--warn-bg); }
:root[data-look="app"] .work-row[data-tone="bad"] { background: var(--danger-bg); }

/* Under a thumb: 52px controls; a small button stays 44. */
@media (pointer: coarse) {
  :root[data-look="app"] .btn:not(.btn-link):not(.btn-sm),
  :root[data-look="app"] .input,
  :root[data-look="app"] .select { min-height: var(--control-h-touch); }
  :root[data-look="app"] .btn-sm:not(.btn-link) { min-height: var(--tap); }
  :root[data-look="app"] .btn-icon:not(.btn-link):not(.btn-sm) { width: var(--control-h-touch); }
  :root[data-look="app"] .btn-icon.btn-sm:not(.btn-link) { width: var(--tap); }
}

/* ---------------------------------------------------------------------------
   Step 3: surfaces, figures and charts.
   --------------------------------------------------------------------------- */

/* Cards: 1.5px edge instead of a shadow, a stronger heading, a roomier KPI with a bigger figure. */
:root[data-look="app"] .panel,
:root[data-look="app"] .kpi { border-width: var(--border-w); }
:root[data-look="app"] .panel-head h2,
:root[data-look="app"] .panel-head h3 { font-size: var(--fs-xl); font-weight: 700; }
:root[data-look="app"] .kpi { gap: var(--sp-3); padding: var(--sp-5); }
:root[data-look="app"] .kpi-label { font-weight: 500; }
:root[data-look="app"] .kpi-value { font-size: calc(var(--fs-3xl) + var(--sp-1)); font-weight: 700; letter-spacing: -0.01em; }
:root[data-look="app"] .kpi-lg .kpi-value { font-size: var(--fs-figure); }
:root[data-look="app"] .kpi-unit { font-size: var(--fs-md); font-weight: 500; }

/* Work rows: the title is the largest thing in the row; the main tick glows like the main button. */
:root[data-look="app"] .work-code,
:root[data-look="app"] .work-name { font-size: var(--fs-md); }
:root[data-look="app"] .work-name { font-weight: 700; }
:root[data-look="app"] .work-meta { font-weight: 500; }
:root[data-look="app"] .tick-primary:not(:disabled):not([aria-disabled="true"]) { box-shadow: var(--sh-brand, none); }

/* Progress bar: thicker, and a large one. */
:root[data-look="app"] .bar { height: var(--bar-h, 0.5rem); }
:root[data-look="app"] .bar-lg { --bar-h: 0.75rem; }
/* In a KPI foot the bar takes the full width of the card; the kit lets it shrink to the width of the line of text under it. */
:root[data-look="app"] .kpi-foot:has(> .bar) { flex-wrap: nowrap; }

/* Empty state: a drawing from spots.svg above the title, a quiet fill, a light dashed edge. */
:root[data-look="app"] .empty { padding-block: var(--sp-8); background: var(--surface-2); border: var(--border-w) dashed var(--primary-tint-line, var(--panel-border)); }
:root[data-look="app"] .tbl-empty .empty { background: transparent; border: 0; }
:root[data-look="app"] .empty-spot { width: 10rem; height: 7.5rem; margin-bottom: var(--sp-1); }
:root[data-look="app"] .empty-title { font-size: var(--fs-xl); font-weight: 700; }

/* Stat tile: an icon disc, a label, one big number. Two of them side by side make an overview. */
:root[data-look="app"] .stat-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); gap: var(--sp-3); }
:root[data-look="app"] .stat { display: grid; align-content: start; gap: var(--sp-3); padding: var(--sp-4); background: var(--surface-2); border-radius: var(--radius-lg); }
:root[data-look="app"] .stat-head { display: flex; align-items: center; gap: var(--sp-3); min-width: 0; }
:root[data-look="app"] .stat-ic {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: var(--icon-chip);
  height: var(--icon-chip);
  color: var(--on-primary-tint, var(--muted));
  background: var(--primary-tint, var(--sunk));
  border-radius: 50%;
}
:root[data-look="app"] .stat-ic .icon { width: var(--icon); height: var(--icon); }
:root[data-look="app"] .stat[data-tone="ok"] .stat-ic { color: var(--ok); background: var(--ok-bg); }
:root[data-look="app"] .stat[data-tone="warn"] .stat-ic { color: var(--warn); background: var(--warn-bg); }
:root[data-look="app"] .stat[data-tone="bad"] .stat-ic { color: var(--danger); background: var(--danger-bg); }
:root[data-look="app"] .stat-label { font-size: var(--fs-md); font-weight: 600; }
:root[data-look="app"] .stat-value { font-size: var(--fs-3xl); font-weight: 700; line-height: var(--lh-tight); font-variant-numeric: tabular-nums; }
:root[data-look="app"] .stat-unit { margin-inline-start: var(--sp-1); font-size: var(--fs-sm); font-weight: 500; color: var(--muted); }
/* Phone: three tiles in a row, each with its icon over its label. */
@media (max-width: 30rem) {
  :root[data-look="app"] .stat-row { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-2); }
  :root[data-look="app"] .stat { padding: var(--sp-3); }
  :root[data-look="app"] .stat-head { flex-direction: column; align-items: flex-start; gap: var(--sp-2); }
}

/* Progress ring: <div class="ring" style="--p:64" role="progressbar" aria-valuenow="64" aria-valuemin="0" aria-valuemax="100"> with .ring-v inside.
   --p is the percent; the ring is drawn with a conic-gradient from the palette, so it follows it. */
:root[data-look="app"] .ring {
  --ring-size: 6rem;
  --ring-w: 0.625rem;
  --ring-fill: var(--primary);
  position: relative;
  display: inline-grid;
  flex: none;
  place-items: center;
  width: var(--ring-size);
  height: var(--ring-size);
  background: conic-gradient(var(--ring-fill) calc(var(--p, 0) * 1%), var(--sunk) 0);
  border-radius: 50%;
}
:root[data-look="app"] .ring::before { content: ""; position: absolute; inset: var(--ring-w); background: var(--surface); border-radius: 50%; }
:root[data-look="app"] .ring-v { position: relative; font-size: var(--fs-xl); font-weight: 700; font-variant-numeric: tabular-nums; }
:root[data-look="app"] .ring-sm { --ring-size: 3.75rem; --ring-w: 0.4375rem; }
:root[data-look="app"] .ring-sm .ring-v { font-size: var(--fs-sm); }
:root[data-look="app"] .ring-lg { --ring-size: 8.5rem; --ring-w: 0.875rem; }
:root[data-look="app"] .ring-lg .ring-v { font-size: var(--fs-2xl); }
:root[data-look="app"] .ring-ok { --ring-fill: var(--ok); }
:root[data-look="app"] .ring-warn { --ring-fill: var(--warn); }
:root[data-look="app"] .ring-bad { --ring-fill: var(--danger); }

/* Column chart: <figure class="chart" role="img" aria-label="...the numbers in words..."> .chart-plot (aria-hidden) > .chart-col (.chart-track > .chart-bar style="--h:60%" > .chart-val, then .chart-lab).
   The value is printed on top of each column, so the heights are not the only carrier; the label on the figure says the same in a sentence.
   aria-current="true" on a column marks the one that matters (today). Keep --h at or under 100%; --chart-h sets the height. */
:root[data-look="app"] .chart { margin: 0; }
:root[data-look="app"] .chart-plot { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: var(--sp-2); height: var(--chart-h, 11rem); }
:root[data-look="app"] .chart-col { display: grid; grid-template-rows: minmax(0, 1fr) auto; justify-items: center; gap: var(--sp-2); min-width: 0; }
:root[data-look="app"] .chart-track { box-sizing: border-box; display: flex; align-items: flex-end; justify-content: center; width: 100%; min-height: 0; padding-top: calc(var(--fs-sm) + var(--sp-2)); }
:root[data-look="app"] .chart-bar {
  position: relative;
  width: min(100%, 2.25rem);
  height: var(--h, 0%);
  min-height: var(--sp-1);
  background: var(--primary-tint-line, var(--sunk));
  border-radius: var(--radius-sm) var(--radius-sm) var(--sp-1) var(--sp-1);
}
:root[data-look="app"] .chart-val { position: absolute; bottom: 100%; left: 50%; padding-bottom: var(--sp-1); font-size: var(--fs-sm); font-weight: 600; line-height: 1; font-variant-numeric: tabular-nums; color: var(--muted); transform: translateX(-50%); }
:root[data-look="app"] .chart-lab { font-size: var(--fs-xs); color: var(--muted); }
:root[data-look="app"] .chart-col[aria-current="true"] .chart-bar { background: var(--primary); }
:root[data-look="app"] .chart-col[aria-current="true"] .chart-val,
:root[data-look="app"] .chart-col[aria-current="true"] .chart-lab { font-weight: 700; color: var(--text); }

/* ---------------------------------------------------------------------------
   Step 4: the phone shell. Tab bar, sub-page header, action bar, toast, bottom sheet, floating action button.
   Bars and sheets get a round top edge; only things that float (toast, sheet, the main button) cast a shadow.
   --------------------------------------------------------------------------- */

:root[data-look="app"] {
  --tabbar-h: calc(var(--tap) + var(--sp-5));
  /* Room for the note, one row of .btn-lg and the bar's padding. */
  --action-bar-h: calc(var(--tap) + var(--sp-10) + var(--sp-5));
}

/* Tab bar: the current tab is its icon on a tint pill with a bold label; no bar over it. */
:root[data-look="app"] .tabbar {
  padding-top: var(--sp-1);
  border: var(--border-w) solid var(--panel-border);
  border-bottom: 0;
  border-radius: var(--radius-xl, var(--radius-lg)) var(--radius-xl, var(--radius-lg)) 0 0;
}
:root[data-look="app"] .tabbar-item { gap: var(--sp-1); font-size: var(--fs-xs); border-radius: var(--radius-lg); }
:root[data-look="app"] .tabbar-item:hover,
:root[data-look="app"] .tabbar-item:active { background: none; }
:root[data-look="app"] .tabbar-item[aria-current="page"] { font-weight: 700; color: var(--on-primary-tint, var(--text)); }
:root[data-look="app"] .tabbar-item[aria-current="page"]::before { content: none; }
:root[data-look="app"] .tabbar-ic {
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 2rem;
  border-radius: var(--radius-pill);
  transition: background-color var(--dur-1) var(--ease);
}
:root[data-look="app"] .tabbar-item:hover .tabbar-ic { background: var(--surface-hover); }
:root[data-look="app"] .tabbar-item:active .tabbar-ic { background: var(--sunk); }
:root[data-look="app"] .tabbar-item[aria-current="page"] .tabbar-ic { background: var(--primary-tint, var(--sunk)); }
:root[data-look="app"] .tabbar-ic > .side-badge { inset-inline-start: 50%; }

/* Sub-page header: a bigger title, and round outlined buttons at both ends. */
:root[data-look="app"] .topbar-title-text { font-size: var(--fs-xl); font-weight: 700; }
:root[data-look="app"] .topbar:has(> .topbar-back) { padding-inline: var(--sp-3); }
:root[data-look="app"] .topbar:has(> .topbar-back) .topbar-back,
:root[data-look="app"] .topbar:has(> .topbar-back) .topbar-actions .btn-icon { border-color: var(--panel-border); }

/* Action bar: the same round top as the tab bar, a little more air around the buttons. */
:root[data-look="app"] .action-bar {
  padding: var(--sp-4) var(--page-x) calc(var(--sp-4) + env(safe-area-inset-bottom, 0px));
  border: var(--border-w) solid var(--panel-border);
  border-bottom: 0;
  border-radius: var(--radius-xl, var(--radius-lg)) var(--radius-xl, var(--radius-lg)) 0 0;
}

/* Toast: an edge in the colour of its level, a bigger icon disc, a bold title, a soft shadow. */
:root[data-look="app"] .toast {
  --toast-line: var(--info-line);
  border: var(--border-w) solid var(--toast-line);
  box-shadow: var(--sh-2);
}
:root[data-look="app"] .toast-ok { --toast-line: var(--ok-line); }
:root[data-look="app"] .toast-warn { --toast-line: var(--warn-line); }
:root[data-look="app"] .toast-bad { --toast-line: var(--danger-line); }
:root[data-look="app"] .toast-icon { width: var(--icon-chip); height: var(--icon-chip); }
:root[data-look="app"] .toast-title { font-weight: 700; }

/* Bottom sheet: <dialog class="modal modal-sheet"> opened with showModal(). It rises from the bottom edge at every width (centred, up to 32rem); a phone modal gets the same
   round top and shadow. The handle is only a mark: closing is by the close button, the scrim or Escape, not by dragging. */
@keyframes sheet-in { from { transform: translateY(100%); } }
:root[data-look="app"] .modal-sheet {
  width: min(100%, 32rem);
  max-width: 100%;
  margin: auto auto 0;
  border-bottom: 0;
  border-radius: var(--radius-xl, var(--radius-lg)) var(--radius-xl, var(--radius-lg)) 0 0;
  box-shadow: var(--sh-sheet, var(--sh-3));
}
:root[data-look="app"] .modal-sheet[open] { animation: sheet-in var(--dur-2) var(--ease-enter, var(--ease)); }
:root[data-look="app"] .modal-sheet::before {
  content: "";
  flex: none;
  width: var(--sp-8);
  height: var(--sp-1);
  margin: var(--sp-3) auto 0;
  background: var(--sunk);
  border-radius: var(--radius-pill);
}
:root[data-look="app"] .modal-sheet .modal-head { padding-top: var(--sp-3); }
:root[data-look="app"] .modal-sheet .modal-foot { padding-bottom: calc(var(--sp-4) + env(safe-area-inset-bottom, 0px)); border-radius: 0; }
@media (max-width: 40rem) {
  :root[data-look="app"] .modal,
  :root[data-look="app"] .modal-sm,
  :root[data-look="app"] .modal-lg {
    border-width: var(--border-w);
    border-bottom: 0;
    border-radius: var(--radius-xl, var(--radius-lg)) var(--radius-xl, var(--radius-lg)) 0 0;
    box-shadow: var(--sh-sheet, var(--sh-3));
  }
  :root[data-look="app"] .modal-sheet { width: 100%; margin: auto 0 0; }
}

/* A list of choices in a sheet: <ul class="sheet-list"><li><button class="sheet-item"><span class="sheet-ic"><svg class="icon"/></span>Label</button></li>.
   .sheet-item-danger for the one that deletes. */
:root[data-look="app"] .sheet-list { display: grid; gap: var(--sp-1); margin: 0; padding: 0; list-style: none; }
:root[data-look="app"] .sheet-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  min-height: var(--control-h-touch);
  padding: var(--sp-2) var(--sp-3);
  font: inherit;
  font-weight: 600;
  color: var(--text);
  text-align: start;
  text-decoration: none;
  background: none;
  border: 0;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: background-color var(--dur-1) var(--ease);
}
:root[data-look="app"] .sheet-item:hover { background: var(--surface-hover); }
:root[data-look="app"] .sheet-item:active { background: var(--sunk); }
:root[data-look="app"] .sheet-ic {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: var(--icon-chip);
  height: var(--icon-chip);
  color: var(--on-primary-tint, var(--muted));
  background: var(--primary-tint, var(--sunk));
  border-radius: 50%;
}
:root[data-look="app"] .sheet-ic .icon { width: var(--icon); height: var(--icon); }
:root[data-look="app"] .sheet-item-danger { color: var(--danger); }
:root[data-look="app"] .sheet-item-danger .sheet-ic { color: var(--danger); background: var(--danger-bg); }

/* Floating action button: the one main action of a top-level screen, above the tab bar at the end edge. <button class="fab" aria-label="Thêm việc"><svg class="icon"/></button>;
   .fab-ext adds a word beside the icon. Not for a screen that has an .action-bar. --fab-bottom moves it where there is no tab bar. */
:root[data-look="app"] .fab {
  position: fixed;
  inset-inline-end: var(--sp-4);
  bottom: var(--fab-bottom, calc(var(--tabbar-h) + env(safe-area-inset-bottom, 0px) + var(--sp-4)));
  z-index: var(--z-topbar);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-width: var(--sp-10);
  height: var(--sp-10);
  padding: 0;
  font: inherit;
  font-weight: 600;
  color: var(--on-primary);
  background: var(--primary);
  border: 0;
  border-radius: 50%;
  box-shadow: var(--sh-brand, var(--sh-2));
  cursor: pointer;
  transition: background-color var(--dur-1) var(--ease), transform var(--dur-1) var(--ease);
}
:root[data-look="app"] .fab { text-decoration: none; }  /* a.fab, for a button that navigates */
:root[data-look="app"] .fab:hover { background: var(--primary-hover); }
:root[data-look="app"] .fab:active { transform: scale(0.96); }
:root[data-look="app"] .fab .icon { width: var(--icon-lg); height: var(--icon-lg); }
:root[data-look="app"] .fab-ext { padding-inline: var(--sp-5); border-radius: var(--radius-pill); }
/* On the page next to .has-tabbar: the last line stays clear of the button as well as the bar. */
:root[data-look="app"] .has-tabbar.has-fab { padding-bottom: calc(var(--tabbar-h) + var(--sp-10) + var(--sp-8) + env(safe-area-inset-bottom, 0px)); }
@media print {
  :root[data-look="app"] .fab { display: none; }
}

/* ---------------------------------------------------------------------------
   Step 5: patterns for an app screen. Week strip, project card, switch and the menu that carries it, settings list,
   notification row, onboarding page and one-time code. The kit's .avatar-group is the avatar stack (set --avatar-ring
   to the colour behind it).
   --------------------------------------------------------------------------- */

/* Week strip: <div class="week" role="group" aria-label="Tuần ..."> of seven <button class="week-day" aria-pressed> with .week-name, .week-num and
   .week-dot (add data-busy to the button when the day has tasks). aria-current="date" marks today. Put the full day, "hôm nay" and the task count in the
   button's aria-label, because the tile alone says only "T6 31". */
:root[data-look="app"] .week { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: calc(var(--sp-1) / 2); } /* a tile stays 44px wide down to a 360px phone */
:root[data-look="app"] .week-day {
  display: grid;
  justify-items: center;
  align-content: center;
  gap: var(--sp-1);
  min-height: calc(var(--tap) + var(--sp-5));
  padding: var(--sp-2) 0;
  font: inherit;
  color: var(--text);
  background: var(--surface);
  border: var(--border-w) solid var(--panel-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: background-color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}
:root[data-look="app"] .week-day:hover { background: var(--surface-hover); }
:root[data-look="app"] .week-name { font-size: var(--fs-xs); font-weight: 500; color: var(--muted); }
:root[data-look="app"] .week-num { font-size: var(--fs-lg); font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums; }
:root[data-look="app"] .week-dot { width: 0.375rem; height: 0.375rem; background: var(--primary); border-radius: 50%; visibility: hidden; }
:root[data-look="app"] .week-day[data-busy] .week-dot { visibility: visible; }
:root[data-look="app"] .week-day[aria-current="date"] { background: var(--primary-tint, var(--surface-2)); border-color: var(--primary); }
:root[data-look="app"] .week-day[aria-pressed="true"] { color: var(--on-primary); background: var(--primary); border-color: var(--primary); }
:root[data-look="app"] .week-day[aria-pressed="true"] .week-name { color: var(--on-primary); }
:root[data-look="app"] .week-day[aria-pressed="true"] .week-dot { background: var(--on-primary); }

/* Project card: the brand colour as a surface, with ripples from the top corner drawn by the card itself. Text and the inverted tag are the on-primary colour,
   so the contrast is the one the palette check already proves for a primary button. <article class="project"> (or <a class="project"> when it opens the project) >
   .project-head (.project-title, .project-tag), .project-meta, .project-progress (.bar.bar-lg aria-hidden, .project-pct), .project-foot (.avatar-group, .project-due). */
:root[data-look="app"] .project {
  --avatar-ring: var(--primary);
  position: relative;
  display: grid;
  gap: var(--sp-3);
  padding: var(--sp-5);
  overflow: hidden;
  color: var(--on-primary);
  text-decoration: none;
  background: var(--primary);
  border-radius: var(--radius-xl, var(--radius-lg));
  isolation: isolate;
  transition: background-color var(--dur-1) var(--ease);
}
:root[data-look="app"] .project::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: repeating-radial-gradient(circle at 100% 0, transparent 0 1.5rem, color-mix(in srgb, var(--on-primary) 7%, transparent) 1.5rem 3rem);
  mask-image: radial-gradient(circle at 100% 0, black 0, transparent 75%);
  pointer-events: none;
}
:root[data-look="app"] a.project:hover { background: var(--primary-hover); }
:root[data-look="app"] a.project:focus-visible { outline-color: var(--on-primary); outline-offset: calc(-1 * var(--sp-2)); }
:root[data-look="app"] .project-head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--sp-3); }
:root[data-look="app"] .project-title { margin: 0; font-size: var(--fs-xl); font-weight: 700; line-height: var(--lh-tight); color: inherit; text-wrap: balance; }
:root[data-look="app"] .project-tag { flex: none; padding: var(--sp-1) var(--sp-3); font-size: var(--fs-xs); font-weight: 700; line-height: var(--lh-tight); color: var(--primary); background: var(--on-primary); border-radius: var(--radius-pill); }
:root[data-look="app"] .project-meta { margin: 0; font-size: var(--fs-sm); font-weight: 500; }
:root[data-look="app"] .project-progress { display: flex; align-items: center; gap: var(--sp-3); }
:root[data-look="app"] .project-progress .bar { --bar-w: auto; --bar-fill: var(--on-primary); flex: 1 1 auto; background: color-mix(in srgb, var(--on-primary) 28%, var(--primary)); }
:root[data-look="app"] .project-pct { font-size: var(--fs-md); font-weight: 700; font-variant-numeric: tabular-nums; }
:root[data-look="app"] .project-foot { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); }
:root[data-look="app"] .project-due { font-size: var(--fs-sm); font-weight: 600; }

/* Switch: bigger, and a .switch-ui span for a parent that carries the state in ARIA (a menu item with aria-checked, a button with aria-pressed). */
:root[data-look="app"] .switch input { width: 3.25rem; height: 2rem; }
:root[data-look="app"] .switch input::after { top: 0.25rem; left: 0.25rem; width: 1.5rem; height: 1.5rem; }
:root[data-look="app"] .switch input:checked::after { transform: translateX(1.25rem); }
:root[data-look="app"] .switch-ui {
  position: relative;
  display: inline-block;
  flex: none;
  width: 3.25rem;
  height: 2rem;
  background: var(--field-border);
  border-radius: var(--radius-pill);
  transition: background-color var(--dur-1) var(--ease);
}
:root[data-look="app"] .switch-ui::after {
  content: "";
  position: absolute;
  top: 0.25rem;
  left: 0.25rem;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--surface);
  border-radius: 50%;
  transition: transform var(--dur-1) var(--ease);
}
:root[data-look="app"] [aria-checked="true"] > .switch-ui,
:root[data-look="app"] [aria-pressed="true"] > .switch-ui { background: var(--primary); }
:root[data-look="app"] [aria-checked="true"] > .switch-ui::after,
:root[data-look="app"] [aria-pressed="true"] > .switch-ui::after { transform: translateX(1.25rem); }

/* Menu: the same round edge as a card, taller items, and a switch at the end of an item that toggles something (role="menuitemcheckbox" with a .switch-ui inside). */
:root[data-look="app"] .menu { min-width: 14rem; padding: var(--sp-2); border-width: var(--border-w); border-radius: var(--radius-lg); }
:root[data-look="app"] .menu-item { min-height: var(--tap); border-radius: var(--radius); }
:root[data-look="app"] .menu-item .switch-ui { margin-inline-start: auto; }
:root[data-look="app"] .menu-sep { margin-inline: calc(-1 * var(--sp-2)); }

/* Settings list: one bordered group of rows. A row is <a class="setting"> (opens a page: .setting-value and a caret at the end), <label class="setting"> (holds a
   <span class="switch"><input type="checkbox" role="switch"></span>) or <button class="setting setting-danger">. Each has .setting-ic, then .setting-text (.setting-name, .setting-sub). */
:root[data-look="app"] .setting-title { margin: 0 0 var(--sp-2); font-size: var(--fs-md); font-weight: 700; }
:root[data-look="app"] .setting-list { margin: 0; padding: 0; overflow: hidden; list-style: none; background: var(--surface); border: var(--border-w) solid var(--panel-border); border-radius: var(--radius-lg); }
:root[data-look="app"] .setting-list > li + li { border-top: 1px solid var(--panel-border); }
:root[data-look="app"] .setting {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  min-height: var(--control-h-touch);
  padding: var(--sp-3) var(--sp-4);
  font: inherit;
  color: var(--text);
  text-align: start;
  text-decoration: none;
  background: none;
  border: 0;
  cursor: pointer;
}
:root[data-look="app"] .setting:hover { background: var(--surface-hover); }
:root[data-look="app"] .setting-ic {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: var(--icon-chip);
  height: var(--icon-chip);
  color: var(--on-primary-tint, var(--muted));
  background: var(--primary-tint, var(--sunk));
  border-radius: 50%;
}
:root[data-look="app"] .setting-ic .icon { width: var(--icon); height: var(--icon); }
:root[data-look="app"] .setting-text { display: grid; flex: 1 1 auto; min-width: 0; overflow-wrap: anywhere; }
:root[data-look="app"] .setting > .switch { flex: none; }
:root[data-look="app"] .setting-name { font-weight: 600; }
:root[data-look="app"] .setting-sub { font-size: var(--fs-sm); color: var(--muted); }
:root[data-look="app"] .setting-value { flex: none; font-size: var(--fs-sm); color: var(--muted); }
:root[data-look="app"] .setting-caret { flex: none; color: var(--muted); }
:root[data-look="app"] .setting-danger { color: var(--danger); }
:root[data-look="app"] .setting-danger .setting-ic { color: var(--danger); background: var(--danger-bg); }

/* Notification row: <ul class="notif-list"> of <li><a class="notif" data-unread> with .notif-ic (data-tone="ok|warn|bad"), .notif-body (.notif-title, .notif-text, .notif-time) and,
   when unread, .notif-dot aria-hidden. Say "Chưa đọc" in a .visually-hidden span in the title, since the tint and the dot are only colour. */
:root[data-look="app"] .notif-day { margin: var(--sp-4) 0 var(--sp-2); font-size: var(--fs-md); font-weight: 700; }
:root[data-look="app"] .notif-list { display: grid; gap: var(--sp-1); margin: 0; padding: 0; list-style: none; }
:root[data-look="app"] .notif {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-3);
  color: var(--text);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: background-color var(--dur-1) var(--ease);
}
:root[data-look="app"] .notif:hover { background: var(--surface-hover); }
:root[data-look="app"] .notif[data-unread] { background: var(--notice-bg, var(--surface-2)); }
:root[data-look="app"] .notif[data-unread]:hover { background: var(--primary-tint, var(--surface-hover)); }
:root[data-look="app"] .notif-ic {
  display: inline-flex;
  flex: none;
  align-items: center;
  justify-content: center;
  width: var(--icon-chip);
  height: var(--icon-chip);
  color: var(--on-primary-tint, var(--muted));
  background: var(--primary-tint, var(--sunk));
  border-radius: 50%;
}
:root[data-look="app"] .notif-ic .icon { width: var(--icon); height: var(--icon); }
:root[data-look="app"] .notif-ic[data-tone="ok"] { color: var(--ok); background: var(--ok-bg); }
:root[data-look="app"] .notif-ic[data-tone="warn"] { color: var(--warn); background: var(--warn-bg); }
:root[data-look="app"] .notif-ic[data-tone="bad"] { color: var(--danger); background: var(--danger-bg); }
:root[data-look="app"] .notif-body { display: grid; flex: 1 1 auto; gap: var(--sp-1); min-width: 0; }
:root[data-look="app"] .notif-title { font-weight: 600; }
:root[data-look="app"] .notif[data-unread] .notif-title { font-weight: 700; }
:root[data-look="app"] .notif-text { font-size: var(--fs-sm); }
:root[data-look="app"] .notif-time { font-size: var(--fs-xs); color: var(--muted); }
:root[data-look="app"] .notif-dot { flex: none; width: 0.625rem; height: 0.625rem; margin-top: var(--sp-2); background: var(--primary); border-radius: 50%; }

/* Onboarding page: a drawing from spots.svg, a big title, one short paragraph, page dots and the buttons. <ol class="dots" aria-label="Trang 1 trên 3"> of <li class="dot">,
   the current one with aria-current="step". */
:root[data-look="app"] .onboard { display: grid; justify-items: center; align-content: center; gap: var(--sp-3); min-height: 100%; padding: var(--page-x); text-align: center; }
:root[data-look="app"] .onboard-art { width: min(100%, 17.5rem); height: auto; aspect-ratio: 4 / 3; margin-bottom: var(--sp-4); }
:root[data-look="app"] .onboard-title { margin: 0; max-width: 18ch; font-size: var(--fs-3xl); font-weight: 700; line-height: var(--lh-tight); text-wrap: balance; }
:root[data-look="app"] .onboard-text { margin: 0; max-width: 32ch; color: var(--muted); text-wrap: pretty; }
:root[data-look="app"] .onboard-actions { display: grid; gap: var(--sp-2); width: 100%; margin-top: var(--sp-4); }
:root[data-look="app"] .dots { display: flex; gap: var(--sp-2); margin: var(--sp-3) 0 0; padding: 0; list-style: none; }
:root[data-look="app"] .dot { width: 0.5rem; height: 0.5rem; background: var(--primary-tint-line, var(--sunk)); border-radius: var(--radius-pill); transition: width var(--dur-2) var(--ease), background-color var(--dur-2) var(--ease); }
:root[data-look="app"] .dot[aria-current="step"] { width: 1.5rem; background: var(--primary); }

/* One-time code: <div class="otp" role="group" aria-labelledby="..."> of <input class="input otp-cell" inputmode="numeric" autocomplete="one-time-code" maxlength="1" placeholder=" "
   aria-label="Số thứ 1 trên 6">. --otp-n sets the cell count (default 6). A filled cell takes the tint; the tenant moves focus on typing, on Backspace and on paste. */
:root[data-look="app"] .otp { display: grid; grid-template-columns: repeat(var(--otp-n, 6), minmax(0, 3.5rem)); gap: var(--sp-2); justify-content: center; }
:root[data-look="app"] .otp-cell { height: var(--sp-10); padding: 0; font-size: var(--fs-2xl); font-weight: 700; line-height: 1; text-align: center; font-variant-numeric: tabular-nums; }
:root[data-look="app"] .input.otp-cell:not(:placeholder-shown):not([aria-invalid="true"]):not(:focus-visible) { background-color: var(--primary-tint, var(--surface-2)); }