/* Time to Meet - design system + grid.
 *
 * Hand-written CSS, no framework: the whole stylesheet is ~15 KB and *is* the design
 * system. Deliberate choices:
 *  - Dark-first, with a light theme that is authored rather than inverted.
 *  - Colour is never the only signal: every band also carries a glyph and a word.
 *  - The quality ramp is luminance-ordered, so it survives greyscale, deuteranopia and
 *    Windows forced-colors mode.
 *  - All clocks use tabular numerals. Digits that jitter while you drag destroy the
 *    entire feel of the tool.
 *  - Logical properties throughout, so RTL is free.
 */

:root {
  color-scheme: dark light;

  --bg: oklch(17% 0.02 265);
  --surface: oklch(21% 0.02 265);
  --surface-2: oklch(25% 0.02 265);
  --hair: rgba(255, 255, 255, 0.07);
  --hair-strong: rgba(255, 255, 255, 0.16);
  --text: oklch(93% 0.01 265);
  --muted: oklch(70% 0.02 265);
  --faint: oklch(55% 0.02 265);

  --working: oklch(72% 0.13 175);
  --shoulder: oklch(80% 0.14 85);
  --offhours: oklch(45% 0.06 265);
  --asleep: oklch(28% 0.07 275);
  --danger: oklch(65% 0.19 15);
  --select: oklch(88% 0.16 195);

  --label-w: 196px;
  --row-h: 52px;
  --radius: 10px;
  --radius-sm: 4px;

  --font-ui: ui-sans-serif, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-clock: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Mono", Menlo, Consolas, monospace;

  --dur: 180ms;
  --ease: cubic-bezier(0.2, 0.7, 0.3, 1);
}

:root[data-theme="light"] {
  --bg: oklch(98% 0.004 265);
  --surface: oklch(95.5% 0.006 265);
  --surface-2: oklch(92% 0.008 265);
  --hair: rgba(12, 16, 30, 0.09);
  --hair-strong: rgba(12, 16, 30, 0.2);
  --text: oklch(23% 0.02 265);
  --muted: oklch(45% 0.02 265);
  --faint: oklch(58% 0.02 265);

  --working: oklch(58% 0.13 175);
  --shoulder: oklch(62% 0.14 75);
  --offhours: oklch(74% 0.035 265);
  --asleep: oklch(86% 0.028 275);
  --select: oklch(52% 0.15 220);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: oklch(98% 0.004 265);
    --surface: oklch(95.5% 0.006 265);
    --surface-2: oklch(92% 0.008 265);
    --hair: rgba(12, 16, 30, 0.09);
    --hair-strong: rgba(12, 16, 30, 0.2);
    --text: oklch(23% 0.02 265);
    --muted: oklch(45% 0.02 265);
    --faint: oklch(58% 0.02 265);
    --working: oklch(58% 0.13 175);
    --shoulder: oklch(62% 0.14 75);
    --offhours: oklch(74% 0.035 265);
    --asleep: oklch(86% 0.028 275);
    --select: oklch(52% 0.15 220);
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 var(--font-ui);
  -webkit-text-size-adjust: 100%;
}

body {
  block-size: 100dvh;
  overflow: hidden;
  display: grid;
  grid-template-rows: auto auto minmax(0, 1fr) auto;
  /* A quiet radial so the surface never reads as flat black. */
  background-image: radial-gradient(120% 80% at 50% -20%, rgba(120, 160, 255, 0.07), transparent 60%);
  background-repeat: no-repeat;
}

.clock, .num { font-family: var(--font-clock); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

button, input, select { font: inherit; color: inherit; }

:where(a) { color: var(--select); text-underline-offset: 3px; }

:focus-visible {
  outline: 2px solid var(--select);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.skip {
  position: absolute; inset-inline-start: 8px; inset-block-start: -60px;
  background: var(--surface-2); padding: 8px 14px; border-radius: 8px; z-index: 100;
  transition: inset-block-start var(--dur);
}
.skip:focus { inset-block-start: 8px; }

/* ---------------------------------------------------------------- header */

header.bar {
  display: flex; align-items: center; gap: 14px;
  padding: 10px 16px;
  border-block-end: 1px solid var(--hair);
  background: color-mix(in oklab, var(--surface) 70%, transparent);
  backdrop-filter: blur(8px);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 9px; font-weight: 650; letter-spacing: -0.015em; }
.brand svg { display: block; }
.brand .mark { color: var(--working); }

.spacer { flex: 1 1 auto; }

.btn {
  appearance: none; border: 1px solid var(--hair-strong); background: var(--surface-2);
  color: var(--text); padding: 7px 12px; border-radius: 8px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 7px; white-space: nowrap;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { background: color-mix(in oklab, var(--surface-2) 60%, var(--select) 12%); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--select); color: oklch(18% 0.03 250); border-color: transparent; font-weight: 620; }
.btn.ghost { background: transparent; border-color: var(--hair); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.btn kbd { font: 11px var(--font-clock); opacity: 0.65; border: 1px solid var(--hair-strong); border-radius: 4px; padding: 0 4px; }

.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px;
  border: 1px solid var(--hair); border-radius: 999px; background: var(--surface);
  font-size: 12.5px;
}
.chip .x { cursor: pointer; opacity: 0.55; padding: 0 2px; border-radius: 4px; }
.chip .x:hover { opacity: 1; background: var(--danger); color: #fff; }

/* ---------------------------------------------------------------- toolbar */

.toolbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 10px 16px; border-block-end: 1px solid var(--hair);
}

.seg { display: inline-flex; border: 1px solid var(--hair-strong); border-radius: 8px; overflow: hidden; }
.seg button {
  appearance: none; background: transparent; border: 0; padding: 6px 11px; cursor: pointer;
  color: var(--muted); border-inline-end: 1px solid var(--hair);
}
.seg button:last-child { border-inline-end: 0; }
.seg button[aria-pressed="true"] { background: var(--select); color: oklch(18% 0.03 250); font-weight: 620; }

.field { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); font-size: 12.5px; }
input[type="date"], input[type="text"], select {
  background: var(--surface-2); border: 1px solid var(--hair-strong); border-radius: 8px;
  padding: 6px 9px; color: var(--text);
}
input[type="date"] { font-family: var(--font-clock); }

/* ---------------------------------------------------------------- layout */

main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 364px;
  gap: 0;
  min-block-size: 0;
  overflow: hidden;
}
@media (max-width: 1080px) {
  /* Single column: the page scrolls again rather than cramming two internal scrollers
     into a phone viewport. */
  body { overflow: auto; block-size: auto; min-block-size: 100dvh; }
  main { grid-template-columns: minmax(0, 1fr); overflow: visible; }
  .rail { border-inline-start: 0 !important; border-block-start: 1px solid var(--hair); overflow: visible; }
  .actionbar { position: sticky; inset-block-end: 0; }
}

.rail {
  min-inline-size: 0;
  border-inline-start: 1px solid var(--hair);
  padding: 14px;
  overflow: auto;
  display: grid; gap: 16px; align-content: start;
  background: color-mix(in oklab, var(--surface) 45%, transparent);
}

.panel { border: 1px solid var(--hair); border-radius: var(--radius); background: var(--surface); overflow: hidden; }
.panel > h2 {
  margin: 0; padding: 10px 12px; font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--muted); font-weight: 600; border-block-end: 1px solid var(--hair);
  display: flex; align-items: center; gap: 8px;
}
.panel > .body { padding: 12px; display: grid; gap: 10px; min-inline-size: 0; }
.panel > .body > * { min-inline-size: 0; max-inline-size: 100%; }
.panel select, .panel input[type="time"], .panel input[type="number"] { min-inline-size: 0; }
.person-row { display: grid; gap: 5px; padding: 7px; border: 1px solid var(--hair); border-radius: 8px; overflow: hidden; }
.person-row .top { display: flex; align-items: center; gap: 6px; min-inline-size: 0; }
.person-row .top .nm { flex: 1 1 auto; min-inline-size: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.person-row .top select { flex: 0 0 auto; inline-size: 104px; font-size: 12px; padding: 3px 4px; }
.person-row .top button { flex: 0 0 auto; }
.person-row .city { font-size: 11.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.person-row .hours { display: flex; gap: 5px; align-items: center; font-size: 11.5px; color: var(--muted); flex-wrap: wrap; }
.person-row .hours input[type="time"] { padding: 3px 4px; font-size: 11.5px; inline-size: 88px; }
.person-row .hours input[type="number"] { inline-size: 46px; padding: 3px 4px; font-size: 11.5px; }
.person-row .hours .arrow { opacity: 0.6; }

/* ---------------------------------------------------------------- the grid */

.gridwrap { overflow: auto; padding: 0 0 12px; position: relative; }

.axis {
  display: grid;
  grid-template-columns: var(--label-w) 1fr;
  position: sticky; inset-block-start: 0; z-index: 5;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: blur(6px);
  border-block-end: 1px solid var(--hair-strong);
}
.axis .ruler {
  position: relative; block-size: 30px;
}
.axis .ruler span {
  position: absolute; inset-block-start: 7px; translate: -50% 0;
  font: 11px var(--font-clock); color: var(--muted); font-variant-numeric: tabular-nums;
}
.axis .ruler span.major { color: var(--text); font-weight: 600; }
.axis .who { padding-inline: 12px; padding-block: 7px; font-size: 11px; color: var(--faint); letter-spacing: 0.04em; text-transform: uppercase; }

.rows { position: relative; }
/* Structural containers for a multi-day span. Declared explicitly rather than relying on
   defaults: the span control can render up to seven of these stacked. */
.daygroup { position: relative; }
.axis.dayhead { position: relative; background: color-mix(in oklab, var(--surface) 55%, transparent); }
.axis.dayhead .who { text-transform: uppercase; }

.row {
  display: grid;
  grid-template-columns: var(--label-w) 1fr;
  block-size: var(--row-h);
  border-block-end: 1px solid var(--hair);
  align-items: stretch;
}
.row:hover { background: color-mix(in oklab, var(--surface) 55%, transparent); }

.rowlabel {
  padding: 7px 12px; min-inline-size: 0;
  display: grid; gap: 1px; align-content: center;
  border-inline-end: 1px solid var(--hair);
  position: sticky; inset-inline-start: 0; z-index: 3;
  background: var(--bg);
}
.rowlabel .n { font-weight: 600; font-size: 13px; overflow: hidden; white-space: nowrap; display: flex; gap: 5px; align-items: center; min-inline-size: 0; }
.rowlabel .n .nm { overflow: hidden; text-overflow: ellipsis; }
.rowlabel .m { font-size: 11px; color: var(--muted); display: flex; gap: 5px; align-items: center; white-space: nowrap; overflow: hidden; }
.rowlabel .m .work { overflow: hidden; text-overflow: ellipsis; }
.rowlabel .m .tz { font-family: var(--font-clock); }
.rowlabel .role { font-size: 9px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--faint); border: 1px solid var(--hair); border-radius: 3px; padding: 0 3px; flex: none; }
.rowlabel .role.organizer { color: var(--working); border-color: color-mix(in oklab, var(--working) 45%, transparent); }

.band {
  position: relative;
  /* The whole availability band is ONE element painted by a CSS gradient built in JS.
     Dragging never touches this node - that is what keeps the pointer at 60fps. */
  background-image: var(--bands, none);
  background-repeat: no-repeat;
  margin-block: 10px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  outline: 1px solid var(--hair);
  outline-offset: -1px;
}
.band .weekend {
  /* One hatch layer for the whole band, masked to the weekend ranges - a per-band child
     element per weekend stretch would mean hundreds of nodes on a 20-person roster. */
  position: absolute; inset: 0;
  background-image: repeating-linear-gradient(135deg, color-mix(in oklab, var(--text) 30%, transparent) 0 3px, transparent 3px 7px);
  pointer-events: none;
  -webkit-mask-image: var(--weekmask, none);
  mask-image: var(--weekmask, none);
}
.band .local {
  position: absolute; inset-block-end: 1px; inline-size: 0;
  font: 9.5px/1 var(--font-clock); color: var(--faint); translate: -50% 0;
  pointer-events: none; user-select: none;
}
.band .mark { position: absolute; inset-block: 0; inline-size: 0; pointer-events: none; }
.band .mark.midnight { border-inline-start: 2px solid var(--hair-strong); }
.band .mark.sun {
  color: oklch(22% 0.04 85); font: 700 9px/1 var(--font-clock); translate: -50% 0; inset-block-start: 2px;
  background: color-mix(in oklab, var(--shoulder) 80%, transparent); border-radius: 3px; padding: 1px 2px;
}
.band .mark.now { border-inline-start: 2px solid var(--select); box-shadow: 0 0 8px var(--select); }
.band .mark.dst { border-inline-start: 2px dashed var(--danger); }

.overlay {
  /* inset-inline-end is load-bearing: without it this box shrinks to zero width and
     every percentage offset inside it resolves against nothing. */
  position: absolute; inset-inline: var(--label-w) 0; inset-block: 0;
  pointer-events: none; z-index: 4;
}
.sel {
  position: absolute; inset-block: 0; pointer-events: auto;
  border-inline: 2px solid var(--select);
  background: color-mix(in oklab, var(--select) 9%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--select) 30%, transparent);
  cursor: grab; touch-action: none;
}
.sel.dragging { cursor: grabbing; }
.sel .grip { position: absolute; inset-block: 0; inline-size: 10px; cursor: ew-resize; }
.sel .grip.start { inset-inline-start: -5px; }
.sel .grip.end { inset-inline-start: calc(100% - 5px); }
.sel .tag { display: none; }

/* The label lives in the sticky ruler: the column it describes is as tall as the roster
   and scrolls away, but the time you are aiming at must never scroll out of view. */
.selmark {
  position: absolute; inset-block-start: 3px; block-size: 22px;
  border: 1px solid var(--select); border-radius: 5px;
  background: color-mix(in oklab, var(--select) 22%, transparent);
  display: flex; align-items: center; justify-content: center;
  font: 600 11px var(--font-clock); color: var(--text);
  white-space: nowrap; overflow: hidden; pointer-events: none;
}
.selmark.tight { color: transparent; overflow: visible; }
/* A 30-minute window is ~16px wide - the label goes outside the bracket rather than being
   clipped to three characters of it. */
.selmark.tight::after {
  content: attr(data-t); position: absolute; inset-inline-start: calc(100% + 7px); inset-block-start: 4px;
  color: var(--select); font-weight: 700;
}
/* Late in the day the label would run past the edge of the grid and be clipped, so it
   flips to the leading side instead. */
.selmark.tight.left::after { inset-inline-start: auto; inset-inline-end: calc(100% + 7px); }
.crosshair { position: absolute; inset-block: 0; inline-size: 0; border-inline-start: 1px dashed var(--hair-strong); pointer-events: none; }

/* No global "night side" overlay: the solar terminator lands at a different x for every
   row, because every row is a different zone. A single gradient across all rows would be
   decoration that looks like data. Sunrise/sunset glyphs per row say it truthfully. */

.overlay {
  /* inset-inline-end is load-bearing: without it this box shrinks to zero width and
     every percentage offset inside it resolves against nothing. */
  position: absolute; inset-inline: var(--label-w) 0; inset-block: 0;
  pointer-events: none; z-index: 4;
}
.sel {
  position: absolute; inset-block: 0; pointer-events: auto;
  border-inline: 2px solid var(--select);
  background: color-mix(in oklab, var(--select) 9%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--select) 30%, transparent);
  cursor: grab; touch-action: none;
}
.sel.dragging { cursor: grabbing; }
.sel .grip { position: absolute; inset-block: 0; inline-size: 10px; cursor: ew-resize; }
.sel .grip.start { inset-inline-start: -5px; }
.sel .grip.end { inset-inline-start: calc(100% - 5px); }
.sel .tag { display: none; }

/* The label lives in the sticky ruler: the column it describes is as tall as the roster
   and scrolls away, but the time you are aiming at must never scroll out of view. */
.selmark {
  position: absolute; inset-block-start: 3px; block-size: 22px;
  border: 1px solid var(--select); border-radius: 5px;
  background: color-mix(in oklab, var(--select) 22%, transparent);
  display: flex; align-items: center; justify-content: center;
  font: 600 11px var(--font-clock); color: var(--text);
  white-space: nowrap; overflow: hidden; pointer-events: none;
}
.selmark.tight { color: transparent; overflow: visible; }
/* A 30-minute window is ~16px wide - the label goes outside the bracket rather than being
   clipped to three characters of it. */
.selmark.tight::after {
  content: attr(data-t); position: absolute; inset-inline-start: calc(100% + 7px); inset-block-start: 4px;
  color: var(--select); font-weight: 700;
}
/* Late in the day the label would run past the edge of the grid and be clipped, so it
   flips to the leading side instead. */
.selmark.tight.left::after { inset-inline-start: auto; inset-inline-end: calc(100% + 7px); }
.crosshair { position: absolute; inset-block: 0; inline-size: 0; border-inline-start: 1px dashed var(--hair-strong); pointer-events: none; }

.shadow {
  position: absolute; inset-inline: var(--label-w) 0; inset-block: 30px 0;
  pointer-events: none; z-index: 1;
  background-image: var(--shadow, none);
  opacity: 0.45;
  mix-blend-mode: multiply;
  border-radius: 4px;
}
/* Night must darken in both themes. `screen` with a near-black colour is a no-op, which is
   why the terminator never showed in dark mode. */
:root[data-theme="dark"] .shadow, :root:not([data-theme]) .shadow { opacity: 0.85; }

/* quality legend + glyph vocabulary: colour is never the only signal */
.legend { display: flex; gap: 14px; flex-wrap: wrap; padding: 8px 16px; color: var(--muted); font-size: 12px; border-block-start: 1px solid var(--hair); }
.legend i { display: inline-block; inline-size: 11px; block-size: 11px; border-radius: 3px; margin-inline-end: 5px; vertical-align: -1px; }
.legend .q-working { background: var(--working); }
.legend .q-shoulder { background: var(--shoulder); }
.legend .q-offhours { background: var(--offhours); }
.legend .q-asleep { background: var(--asleep); }

/* ---------------------------------------------------------------- slots */

.slot {
  display: grid; gap: 3px; padding: 9px 10px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--hair); background: var(--surface-2);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.slot:hover { border-color: var(--select); }
.slot[aria-current="true"] { border-color: var(--select); background: color-mix(in oklab, var(--surface-2) 65%, var(--select) 18%); }
.slot .top { display: flex; align-items: baseline; gap: 8px; }
.slot .t { font: 600 14px var(--font-clock); }
.slot .score { margin-inline-start: auto; font: 700 12px var(--font-clock); color: var(--muted); }
.slot .sub { font-size: 11.5px; color: var(--muted); }
.slot .why { font-size: 11.5px; color: var(--danger); }

.counts { display: inline-flex; gap: 7px; font: 11.5px var(--font-clock); }
.counts b { font-weight: 600; }
.c-ok { color: var(--working); }
.c-tight { color: var(--shoulder); }
.c-hard { color: var(--muted); }
.c-bad { color: var(--danger); }

.meter { block-size: 7px; border-radius: 99px; background: var(--surface-2); overflow: hidden; border: 1px solid var(--hair); }
.meter i { display: block; block-size: 100%; background: linear-gradient(90deg, var(--danger), var(--shoulder), var(--working)); }

/* ---------------------------------------------------------------- verdict bar */

.actionbar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 10px 16px; border-block-start: 1px solid var(--hair-strong);
  background: color-mix(in oklab, var(--surface) 78%, transparent);
  backdrop-filter: blur(8px);
}
.actionbar .big { font: 600 15px var(--font-clock); }
.actionbar .sub { font-size: 12px; color: var(--muted); }

/* ---------------------------------------------------------------- palette */

.palette {
  position: fixed; inset: 0; z-index: 60; display: none;
  background: rgba(6, 8, 14, 0.55); backdrop-filter: blur(3px);
  align-items: start; justify-content: center; padding-block-start: 12vh;
}
.palette[data-open] { display: flex; }
.palette .box {
  inline-size: min(680px, 92vw); background: var(--surface); border: 1px solid var(--hair-strong);
  border-radius: 14px; overflow: hidden; box-shadow: 0 30px 80px -20px rgba(0,0,0,0.6);
}
.palette input {
  inline-size: 100%; border: 0; border-block-end: 1px solid var(--hair);
  background: transparent; padding: 15px 16px; font-size: 16px; outline: none;
}
.palette ol { list-style: none; margin: 0; padding: 0; max-block-size: 52vh; overflow: auto; }
.palette li { padding: 9px 16px; display: grid; grid-template-columns: 1fr auto auto; gap: 10px; cursor: pointer; align-items: center; }
.palette li[aria-selected="true"] { background: color-mix(in oklab, var(--surface-2) 60%, var(--select) 20%); }
.palette li .nm { font-weight: 550; }
.palette li .nm small { color: var(--muted); font-weight: 400; margin-inline-start: 6px; }
.palette li .lt { font: 12.5px var(--font-clock); color: var(--text); }
.palette li .z { font: 11px var(--font-clock); color: var(--faint); }
.palette .hint { padding: 8px 16px; font-size: 11.5px; color: var(--faint); border-block-start: 1px solid var(--hair); display: flex; gap: 14px; }

/* ---------------------------------------------------------------- sheet */

.sheet { position: fixed; inset: 0; z-index: 70; display: none; align-items: end; justify-content: center; background: rgba(6,8,14,.55); }
.sheet[data-open] { display: flex; }
.sheet .box {
  inline-size: min(720px, 96vw); background: var(--surface); border: 1px solid var(--hair-strong);
  border-radius: 16px 16px 0 0; padding: 16px; display: grid; gap: 12px;
}
.times { display: grid; gap: 6px; }
.times .r { display: grid; grid-template-columns: 1.1fr auto auto; gap: 10px; align-items: baseline; padding: 6px 9px; border-radius: 7px; background: var(--surface-2); }
.times .r .who { font-weight: 600; }
.times .r .when { font: 13px var(--font-clock); }
.times .r .q { font-size: 11px; }
.times .r.bad { outline: 1px solid var(--danger); }
textarea { inline-size: 100%; min-block-size: 84px; background: var(--surface-2); border: 1px solid var(--hair); border-radius: 8px; padding: 9px; font: 12.5px var(--font-clock); resize: vertical; }

/* ---------------------------------------------------------------- misc */

.toast {
  position: fixed; inset-block-end: 78px; inset-inline-start: 50%; translate: -50% 0;
  background: var(--surface-2); border: 1px solid var(--hair-strong); border-radius: 10px;
  padding: 9px 15px; z-index: 80; box-shadow: 0 12px 40px -12px rgba(0,0,0,.6);
  animation: pop var(--dur) var(--ease);
}
@keyframes pop { from { opacity: 0; translate: -50% 8px; } }

.empty { padding: 28px 16px; color: var(--muted); text-align: center; }
.empty h3 { margin: 0 0 6px; color: var(--text); font-size: 16px; }

.visually-hidden {
  position: absolute !important; inline-size: 1px; block-size: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

[aria-live="polite"].visually-hidden { position: fixed; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* Forced-colors: fills carry no meaning there, so outline the bands and keep the glyphs. */
@media (forced-colors: active) {
  .band { forced-color-adjust: none; background-image: none !important; outline: 2px solid CanvasText; }
  .sel { border-color: Highlight; }
}

@media (max-width: 720px) {
  :root { --label-w: 128px; --row-h: 62px; }
  main { grid-template-columns: minmax(0, 1fr); }
  .rowlabel .m .work { display: none; }
}