/* GetExactAmount — shared styles.
   Tokens come from design/aeo-report-ui/tokens.json. Site additions are marked
   "site:" and explained in docs/design-system.md. No external requests. */

/* ==========================================================================
   1. Tokens
   ========================================================================== */

:root {
  /* Surfaces */
  --canvas: #f3f4f6;
  --surface: #ffffff;
  --surface-subtle: #fafafb;
  --surface-chip: #f3f3f3;

  /* Lines */
  --line-card: #f0f0f0;
  --line-grid: #f6f7f8;
  --line-chip: #e9e9e9;
  --line-strong: #e4e7ec;
  --line-field: #84878c;   /* site: form control border, 3.6:1 on surface (WCAG 1.4.11) */

  /* Text */
  --ink-strong: #101112;
  --ink: #242629;
  --ink-secondary: #424447;
  --ink-tertiary: #5e5e5e;
  --ink-muted: #7f7f7f;    /* 4.0:1: decorative only, never for text people must read */
  --icon: #7c7c80;
  --chip-ink: #595959;
  --underline: #919294;
  --underline-soft: #b6b8ba;

  /* Accent and status */
  --accent: #266df0;
  --accent-hover: #1d5ad0; /* site: hover/pressed state of accent */
  --accent-tint: #edf3fe;  /* site: selected row / chip hover tint */
  --on-accent: #ffffff;
  --success-bg: #e0fced;
  --success-ink: #007d53;
  --line-success: #d5f9e7;
  --warning-bg: #fff4e8;
  --warning-ink: #b45309;
  --danger-bg: #fef0ef;
  --danger-ink: #b42318;

  /* Type */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --text-xs: 0.75rem;      /* 12/16 badge, meta */
  --text-sm: 0.875rem;     /* 14/20 tables, hints, result details */
  --text-md: 1rem;         /* 16/24 body, labels, inputs */
  --text-lg: 1.125rem;     /* 18/28 lead, h3 */
  --text-xl: clamp(1.25rem, 1.1rem + 0.5vw, 1.375rem);   /* h2 */
  --text-2xl: clamp(1.75rem, 1.4rem + 1.4vw, 2.25rem);   /* h1 */
  --text-score: 2.5rem;    /* 40/44 the result number */

  /* Spacing (tokens.json space-1…8, site: 9–11 for page rhythm) */
  --space-1: 2px;
  --space-2: 4px;
  --space-3: 6px;
  --space-4: 8px;
  --space-5: 10px;
  --space-6: 12px;
  --space-7: 16px;
  --space-8: 24px;
  --space-9: 32px;
  --space-10: 48px;
  --space-11: 64px;

  /* Sizes */
  --control: 44px;         /* site: min touch target for every control */
  --row-height: 36px;
  --gutter: max(16px, env(safe-area-inset-left), env(safe-area-inset-right));
  --container: 75rem;      /* ~1200px */
  --measure: 70ch;

  /* Radius */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-full: 999px;

  --hairline: 1px;
  --focus: 2px solid var(--accent);

  color-scheme: light;
}

/* Dark theme. Only tokens change here, never components. The same block is used
   twice: by the system setting (unless the visitor picked Light) and by an
   explicit Dark choice. tests/contrast.test.js checks both blocks are identical
   and every text/background pair passes WCAG AA. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --canvas: #0f1114;
    --surface: #17191d;
    --surface-subtle: #1c1f24;
    --surface-chip: #262a30;
    --line-card: #262a30;
    --line-grid: #1f2227;
    --line-chip: #30343b;
    --line-strong: #353a42;
    --line-field: #7f8590;
    --ink-strong: #f3f4f6;
    --ink: #e3e5e9;
    --ink-secondary: #c4c8ce;
    --ink-tertiary: #a9aeb6;
    --ink-muted: #858b94;
    --icon: #9aa0a9;
    --chip-ink: #bcc1c8;
    --underline: #80868f;
    --underline-soft: #5b616a;
    --accent: #78a6ff;
    --accent-hover: #a0c0ff;
    --accent-tint: #1a2640;
    --on-accent: #0b1220;
    --success-bg: #0f2a1f;
    --success-ink: #5fd3a1;
    --line-success: #1c4434;
    --warning-bg: #2d2113;
    --warning-ink: #f2a65e;
    --danger-bg: #331817;
    --danger-ink: #ff8f85;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --canvas: #0f1114;
  --surface: #17191d;
  --surface-subtle: #1c1f24;
  --surface-chip: #262a30;
  --line-card: #262a30;
  --line-grid: #1f2227;
  --line-chip: #30343b;
  --line-strong: #353a42;
  --line-field: #7f8590;
  --ink-strong: #f3f4f6;
  --ink: #e3e5e9;
  --ink-secondary: #c4c8ce;
  --ink-tertiary: #a9aeb6;
  --ink-muted: #858b94;
  --icon: #9aa0a9;
  --chip-ink: #bcc1c8;
  --underline: #80868f;
  --underline-soft: #5b616a;
  --accent: #78a6ff;
  --accent-hover: #a0c0ff;
  --accent-tint: #1a2640;
  --on-accent: #0b1220;
  --success-bg: #0f2a1f;
  --success-ink: #5fd3a1;
  --line-success: #1c4434;
  --warning-bg: #2d2113;
  --warning-ink: #f2a65e;
  --danger-bg: #331817;
  --danger-ink: #ff8f85;
  color-scheme: dark;
}

/* ==========================================================================
   2. Base
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-bottom: 80px; /* keep focused fields clear of the mobile summary bar */
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: 1.5;
  color: var(--ink);
  background: var(--surface);
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

h1, h2, h3, h4 { color: var(--ink-strong); font-weight: 600; margin: 0; }
h1 { font-size: var(--text-2xl); line-height: 1.2; letter-spacing: -0.02em; }
h2 { font-size: var(--text-xl); line-height: 1.3; letter-spacing: -0.01em; }
h3 { font-size: var(--text-lg); line-height: 1.4; }
p, ul, ol, dl, figure, table { margin: 0; }
img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; text-decoration-color: var(--underline); }
a:hover { text-decoration-color: currentColor; }

:focus-visible { outline: var(--focus); outline-offset: 2px; }

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

.icon { width: 16px; height: 16px; flex: none; color: var(--icon); }

.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: var(--gutter); top: -100px; z-index: 100;
  padding: var(--space-5) var(--space-7); background: var(--accent); color: var(--on-accent);
  border-radius: var(--radius-sm); font-weight: 500; text-decoration: none;
}
.skip-link:focus { top: var(--space-4); }

.container { width: 100%; max-width: calc(var(--container) + 2 * var(--gutter)); margin-inline: auto; padding-inline: var(--gutter); }

/* ==========================================================================
   3. Header, navigation, footer
   ========================================================================== */

.site-header { background: var(--surface); border-bottom: var(--hairline) solid var(--line-strong); }
.site-header__row { display: flex; align-items: center; gap: var(--space-7); min-height: 60px; }

.logo { display: inline-flex; align-items: center; gap: var(--space-4); min-height: var(--control); font-weight: 600; letter-spacing: -0.01em; color: var(--ink-strong); text-decoration: none; }
.logo__mark { width: 24px; height: 24px; border-radius: var(--radius-xs); background: var(--accent); color: var(--on-accent); display: grid; place-content: center; }
.logo__mark svg { width: 16px; height: 16px; }

.settings { display: flex; gap: var(--space-4); margin-left: auto; }
.settings label { display: inline-flex; align-items: center; gap: var(--space-3); font-size: var(--text-sm); color: var(--ink-tertiary); }

/* Mobile menu: <details> works without JS; JS adds Esc + focus return. */
.menu { position: relative; }
.menu > summary { list-style: none; }
.menu > summary::-webkit-details-marker { display: none; }
.menu__panel { position: absolute; right: 0; top: calc(100% + var(--space-4)); z-index: 20; width: min(20rem, calc(100vw - 2 * var(--gutter))); padding: var(--space-4); background: var(--surface); border: var(--hairline) solid var(--line-strong); border-radius: var(--radius-md); }
.menu__panel a { display: flex; align-items: center; justify-content: space-between; min-height: var(--control); padding-inline: var(--space-4); border-radius: var(--radius-sm); text-decoration: none; }
.menu__panel a:hover { background: var(--surface-subtle); }

.nav-inline { display: none; }

@media (max-width: 767px) {
  .site-header__row { flex-wrap: wrap; row-gap: 0; }
  .settings { order: 3; width: 100%; margin-left: 0; padding-bottom: var(--space-4); }
  .settings label { flex: 1; }
  .settings select { flex: 1; min-width: 0; }
  .menu { margin-left: auto; }
  .theme-toggle { margin-left: auto; }
  .theme-toggle:not([hidden]) ~ .menu { margin-left: 0; }
}

@media (min-width: 1024px) {
  .menu { display: none; }
  .nav-inline { display: flex; gap: var(--space-2); }
  .nav-inline a { display: inline-flex; align-items: center; min-height: var(--control); padding-inline: var(--space-4); border-radius: var(--radius-sm); font-size: var(--text-sm); font-weight: 500; text-decoration: none; color: var(--ink-secondary); }
  .nav-inline a:hover { background: var(--surface-subtle); color: var(--ink-strong); }
  .nav-inline a[aria-current] { color: var(--ink-strong); box-shadow: inset 0 -2px 0 var(--accent); border-radius: 0; }
}

.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); padding: 0; list-style: none; font-size: var(--text-sm); color: var(--ink-tertiary); }
.breadcrumb li { display: inline-flex; align-items: center; gap: var(--space-2); }
.breadcrumb li + li::before { content: "›"; color: var(--icon); padding-right: var(--space-2); }
.breadcrumb a { display: inline-flex; align-items: center; min-height: 24px; color: var(--ink-tertiary); }
.breadcrumb [aria-current] { color: var(--ink-secondary); }

.site-footer { margin-top: var(--space-11); padding-block: var(--space-10) var(--space-9); background: var(--surface-subtle); border-top: var(--hairline) solid var(--line-strong); font-size: var(--text-sm); color: var(--ink-secondary); }
.site-footer__grid { display: grid; gap: var(--space-9); grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); }
.site-footer h2 { font-size: var(--text-sm); margin-bottom: var(--space-4); }
.site-footer ul { list-style: none; padding: 0; display: grid; gap: var(--space-1); }
.site-footer li a { display: inline-flex; align-items: center; min-height: 32px; }
.site-footer__legal { margin-top: var(--space-9); padding-top: var(--space-7); border-top: var(--hairline) solid var(--line-strong); color: var(--ink-tertiary); }

/* ==========================================================================
   4. Page layout
   ========================================================================== */

.page-head { padding-block: var(--space-7) var(--space-8); display: grid; gap: var(--space-6); }
.lead { font-size: var(--text-lg); line-height: 1.55; color: var(--ink-secondary); max-width: var(--measure); }
.meta { font-size: var(--text-sm); color: var(--ink-tertiary); }

/* Workbench: grey band that holds the form and result cards. */
.workbench { background: var(--canvas); padding-block: var(--space-7) var(--space-9); }
.calc { display: grid; gap: var(--space-7); align-items: start; }
.calc > * { min-width: 0; }

@media (min-width: 1024px) {
  .calc { grid-template-columns: minmax(0, 1fr) minmax(22rem, 26rem); gap: var(--space-8); }
  .calc > .result { position: sticky; top: var(--space-7); }
}

.section { padding-block: var(--space-10) 0; }
.section > * + * { margin-top: var(--space-7); }
.section h2 + p { margin-top: var(--space-4); }
.band { background: var(--canvas); padding-block: var(--space-10); margin-top: var(--space-10); }
.band--flush { margin-top: 0; }
.stack > * + * { margin-top: var(--space-7); }

.prose { max-width: var(--measure); }
.prose > * + * { margin-top: var(--space-7); }
.prose ul, .prose ol { padding-left: 1.25rem; display: grid; gap: var(--space-4); }
.prose strong { color: var(--ink-strong); font-weight: 600; }
.prose > h2 { margin-top: var(--space-9); }
.prose > h2:first-child { margin-top: 0; }

/* ==========================================================================
   5. Card
   ========================================================================== */

.card { background: var(--surface); border: var(--hairline) solid var(--line-card); border-radius: var(--radius-md); padding: var(--space-8) var(--space-7); }
@media (min-width: 480px) { .card { padding: var(--space-8); } }
.card__title { font-size: var(--text-lg); margin-bottom: var(--space-7); }

/* ==========================================================================
   6. Form
   ========================================================================== */

.form { display: grid; gap: var(--space-8); }
.form fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.form legend { padding: 0; }

.field { display: grid; gap: var(--space-3); min-width: 0; align-content: start; }
.field__label, .form legend.field__label { font-weight: 500; color: var(--ink-strong); }
.field__hint { font-size: var(--text-sm); color: var(--ink-tertiary); }

/* Input with unit suffix: the unit is part of the accessible name via the label. */
.input { display: flex; align-items: stretch; min-height: var(--control); background: var(--surface); border: var(--hairline) solid var(--line-field); border-radius: var(--radius-sm); }
.input:focus-within { outline: var(--focus); outline-offset: 1px; border-color: var(--accent); }
.input input, .input select { flex: 1; min-width: 0; width: 100%; min-height: var(--control); padding: 0 var(--space-6); border: 0; background: transparent; font-size: var(--text-md); appearance: none; -webkit-appearance: none; }
.input input:focus, .input select:focus { outline: none; }
.input input::placeholder { color: var(--ink-tertiary); opacity: 1; }
.input__unit { display: flex; align-items: center; padding: 0 var(--space-6) 0 var(--space-2); color: var(--ink-tertiary); font-size: var(--text-sm); white-space: nowrap; }
.input__unit--prefix { padding: 0 0 0 var(--space-6); }
.input__icon { align-self: center; margin-left: var(--space-6); }
.input .input__select { flex: none; width: auto; padding: 0 var(--space-6); border-left: var(--hairline) solid var(--line-strong); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--ink-secondary); cursor: pointer; }
.input .input__select:focus-visible { outline: var(--focus); outline-offset: -2px; }
.input__unit--prefix + input { padding-left: var(--space-2); }

.select { position: relative; display: inline-flex; }
.select select { min-height: var(--control); width: 100%; padding: 0 2.25rem 0 var(--space-6); background: var(--surface); border: var(--hairline) solid var(--line-field); border-radius: var(--radius-sm); font-size: var(--text-md); color: var(--ink); appearance: none; -webkit-appearance: none; cursor: pointer; }
.select::after { content: ""; position: absolute; right: 0.85rem; top: 50%; width: 7px; height: 7px; margin-top: -5px; border-right: 1.5px solid var(--icon); border-bottom: 1.5px solid var(--icon); transform: rotate(45deg); pointer-events: none; }
.select select:focus-visible { outline: var(--focus); outline-offset: 1px; }

/* Rows of inputs: length × width, ft + in. */
.row { display: grid; gap: var(--space-6); }
@media (min-width: 480px) { .row--2 { grid-template-columns: 1fr 1fr; } }
/* Width, height, number: count drops under the sizes on narrow screens. */
@media (min-width: 480px) { .row--3 { grid-template-columns: 1fr 1fr; } }
@media (min-width: 768px) { .row--3 { grid-template-columns: 1fr 1fr minmax(6rem, 0.6fr); } }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.pair--single { grid-template-columns: 1fr; }
.row > *, .pair > * { min-width: 0; }

/* Validation: never color alone, always icon + text. */
.field__msg { display: flex; gap: var(--space-3); align-items: flex-start; font-size: var(--text-sm); }
.field__msg .icon { margin-top: 2px; }
.field__msg--error { color: var(--danger-ink); }
.field__msg--error .icon { color: var(--danger-ink); }
.field__msg--warning { color: var(--warning-ink); }
.field__msg--warning .icon { color: var(--warning-ink); }
.input--invalid, .input:has([aria-invalid="true"]) { border-color: var(--danger-ink); box-shadow: inset 3px 0 0 var(--danger-ink); }

/* Chips: native radios, styled label. */
.chips { display: flex; flex-wrap: wrap; gap: var(--space-4); }
.chip { position: relative; display: inline-flex; }
.chip input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.chip span { display: inline-flex; align-items: center; min-height: var(--control); padding: 0 var(--space-7); border: var(--hairline) solid var(--line-field); border-radius: var(--radius-full); background: var(--surface); font-size: var(--text-sm); font-weight: 500; white-space: nowrap; }
.chip input:hover + span { background: var(--accent-tint); }
.chip input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.chip input:focus-visible + span { outline: var(--focus); outline-offset: 2px; }

/* Zones: repeatable rows (rooms, walls). */
.zones { display: grid; gap: var(--space-6); }
.zone { display: grid; grid-template-columns: 1fr auto; gap: var(--space-4); align-items: end; padding-bottom: var(--space-6); border-bottom: var(--hairline) solid var(--line-strong); }
.zone__title { grid-column: 1 / -1; font-size: var(--text-sm); font-weight: 500; color: var(--ink-tertiary); }

/* Advanced options and FAQ share the disclosure look. */
.disclosure { border-top: var(--hairline) solid var(--line-strong); }
.disclosure > summary { display: flex; align-items: center; gap: var(--space-4); min-height: var(--control); padding-block: var(--space-4); font-weight: 500; color: var(--ink-strong); cursor: pointer; list-style: none; }
.disclosure > summary::-webkit-details-marker { display: none; }
.disclosure > summary::after { content: ""; margin-left: auto; width: 8px; height: 8px; border-right: 1.5px solid var(--icon); border-bottom: 1.5px solid var(--icon); transform: rotate(45deg); transition: transform 0.15s; flex: none; }
.disclosure[open] > summary::after { transform: rotate(-135deg); }
.disclosure__body { padding-block: var(--space-4) var(--space-8); display: grid; gap: var(--space-8); }
.form .disclosure:last-child { border-bottom: var(--hairline) solid var(--line-strong); }

/* ==========================================================================
   7. Buttons
   ========================================================================== */

.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-4); min-height: var(--control); padding: 0 var(--space-7); border: var(--hairline) solid var(--line-field); border-radius: var(--radius-sm); background: var(--surface); color: var(--ink-strong); font-size: var(--text-sm); font-weight: 500; text-decoration: none; cursor: pointer; white-space: nowrap; }
.btn:hover { background: var(--surface-subtle); }
.btn .icon { color: currentColor; }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn--ghost { border-color: transparent; background: transparent; color: var(--ink-secondary); }
.btn--ghost:hover { background: var(--surface-chip); }
.btn--icon { width: var(--control); padding: 0; }
/* Theme button: one icon per state (system, light, dark); hidden without JS. */
.theme-toggle .icon { display: none; }
.theme-toggle[data-state="system"] .theme-toggle__system,
.theme-toggle[data-state="light"] .theme-toggle__light,
.theme-toggle[data-state="dark"] .theme-toggle__dark { display: block; }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-4); }

/* ==========================================================================
   8. Result
   ========================================================================== */

.result { background: var(--surface); border: var(--hairline) solid var(--line-card); border-radius: var(--radius-md); padding: var(--space-8) var(--space-7); display: grid; gap: var(--space-7); font-size: var(--text-sm); line-height: 20px; }
@media (min-width: 480px) { .result { padding: var(--space-8); } }

.result__eyebrow { font-size: var(--text-sm); font-weight: 500; color: var(--ink-tertiary); letter-spacing: 0; }
.result__headline { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-4); color: var(--ink-strong); }
.result__verb { font-size: var(--text-lg); font-weight: 500; }
.result__number { font-size: var(--text-score); line-height: 44px; font-weight: 600; letter-spacing: -0.02em; }
.result__unit { font-size: var(--text-lg); font-weight: 600; }
.result__sub { margin-top: calc(-1 * var(--space-4)); color: var(--ink-secondary); font-size: var(--text-md); line-height: 1.5; }

/* Key–value rows, from ActionCard rows (32px). */
.kv { display: grid; border-top: var(--hairline) solid var(--line-strong); }
.kv > div { display: flex; align-items: center; gap: var(--space-5); min-height: 40px; padding-block: var(--space-3); border-bottom: var(--hairline) solid var(--line-card); }
.kv dt { display: inline-flex; align-items: center; gap: var(--space-5); color: var(--ink-tertiary); }
.kv dd { margin: 0 0 0 auto; text-align: right; font-weight: 500; color: var(--ink-strong); }
.kv dd .badge { margin-left: var(--space-3); }

.cost { display: grid; gap: var(--space-4); }
.cost__total { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-4); }
.cost__total strong { font-size: var(--text-xl); font-weight: 600; color: var(--ink-strong); }
.cost__range { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: var(--hairline) solid var(--line-strong); border-radius: var(--radius-sm); }
.cost__range > div { padding: var(--space-4) var(--space-5); display: grid; gap: var(--space-1); }
.cost__range > div + div { border-left: var(--hairline) solid var(--line-strong); }
.cost__range dt { font-size: var(--text-xs); line-height: 16px; color: var(--ink-tertiary); }
.cost__range dd { margin: 0; font-weight: 500; color: var(--ink-strong); }
.cost--empty { padding: var(--space-6); background: var(--surface-subtle); border-radius: var(--radius-sm); color: var(--ink-secondary); }

.formula { padding: var(--space-6); background: var(--surface-subtle); border-radius: var(--radius-sm); color: var(--ink-secondary); }
.formula strong { color: var(--ink-strong); font-weight: 500; }

/* ==========================================================================
   9. Badges, callouts
   ========================================================================== */

.badge { display: inline-flex; align-items: center; height: 20px; padding: 0 var(--space-3); border-radius: var(--radius-xs); border: var(--hairline) solid transparent; font-size: var(--text-xs); line-height: 16px; font-weight: 500; white-space: nowrap; background: var(--surface-chip); color: var(--chip-ink); }
.badge--success { background: var(--success-bg); color: var(--success-ink); border-color: var(--line-success); }
.badge--warning { background: var(--warning-bg); color: var(--warning-ink); }
.badge--danger { background: var(--danger-bg); color: var(--danger-ink); }

.count { display: inline-flex; align-items: center; justify-content: center; min-width: 20px; height: 20px; padding: 0 var(--space-2); border: var(--hairline) solid var(--line-chip); border-radius: var(--radius-xs); background: var(--surface-chip); color: var(--chip-ink); font-size: 11px; line-height: 16px; font-weight: 500; }

.callout { display: flex; gap: var(--space-5); padding: var(--space-6); border-radius: var(--radius-sm); font-size: var(--text-sm); line-height: 20px; }
.callout .icon { margin-top: 2px; color: currentColor; }
.callout strong { font-weight: 600; }
.callout--warning { background: var(--warning-bg); color: var(--warning-ink); }
.callout--tip { background: var(--success-bg); color: var(--success-ink); }
.callout--info { background: var(--surface-subtle); color: var(--ink-secondary); border: var(--hairline) solid var(--line-strong); }
.callout--error { background: var(--danger-bg); color: var(--danger-ink); }

/* ==========================================================================
   10. Mobile summary bar (< 1024px, shown by JS when the result is off-screen)
   ========================================================================== */

.mini-summary { position: fixed; inset: auto 0 0 0; z-index: 30; display: flex; align-items: center; gap: var(--space-6); padding: var(--space-4) var(--gutter) max(var(--space-4), env(safe-area-inset-bottom)); background: var(--surface); border-top: var(--hairline) solid var(--line-strong); }
.mini-summary[hidden] { display: none; }
.mini-summary__text { flex: 1; min-width: 0; font-weight: 600; color: var(--ink-strong); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (min-width: 1024px) { .mini-summary { display: none; } }

/* ==========================================================================
   11. Content blocks: table, FAQ, lists, cards
   ========================================================================== */

/* DataTable: scrolls inside its own wrapper, never the page. */
.table-wrap { overflow-x: auto; border: var(--hairline) solid var(--line-strong); border-radius: var(--radius-md); background: var(--surface); }
.table-wrap:focus-visible { outline: var(--focus); outline-offset: 2px; }
.table { width: 100%; min-width: 30rem; border-collapse: collapse; font-size: var(--text-sm); line-height: 20px; }
.table caption { padding: var(--space-6) var(--space-7); text-align: left; font-weight: 500; color: var(--ink-strong); border-bottom: var(--hairline) solid var(--line-strong); }
.table th, .table td { padding: var(--space-4) var(--space-7); min-height: var(--row-height); text-align: left; vertical-align: top; border-bottom: var(--hairline) solid var(--line-strong); }
.table thead th { font-weight: 500; color: var(--ink); background: var(--surface-subtle); }
.table tbody th { font-weight: 500; color: var(--ink-strong); }
.table td { color: var(--ink-secondary); }
.table tr:last-child > * { border-bottom: 0; }
.table .num { text-align: right; }

.faq { border-bottom: var(--hairline) solid var(--line-strong); max-width: var(--measure); }
.faq .disclosure__body { display: block; padding-top: 0; color: var(--ink-secondary); }

.checklist { list-style: none; padding: 0; display: grid; gap: var(--space-4); max-width: var(--measure); }
.checklist li { display: flex; gap: var(--space-5); }
.checklist .icon { margin-top: 4px; }

/* Calculator cards (from ActionCard). Whole card is clickable via the title link. */
.cards { display: grid; gap: var(--space-6); grid-template-columns: repeat(auto-fill, minmax(min(100%, 16rem), 1fr)); }
.calc-card { position: relative; display: grid; gap: var(--space-4); align-content: start; padding: var(--space-7); background: var(--surface); border: var(--hairline) solid var(--line-card); border-radius: var(--radius-md); }
.calc-card:hover { border-color: var(--line-strong); background: var(--surface-subtle); }
.calc-card:focus-within { outline: var(--focus); outline-offset: 2px; }
.calc-card__title { font-size: var(--text-md); font-weight: 600; }
.calc-card__title a { text-decoration-color: var(--underline-soft); }
.calc-card__title a::after { content: ""; position: absolute; inset: 0; border-radius: inherit; }
.calc-card__title a:focus-visible { outline: none; }
.calc-card__text { font-size: var(--text-sm); color: var(--ink-tertiary); }
.calc-card__meta { display: flex; align-items: center; gap: var(--space-4); font-size: var(--text-sm); color: var(--ink-secondary); }
.calc-card--soon { background: var(--surface-subtle); }
.calc-card--soon .calc-card__title { color: var(--ink-secondary); }

.related { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fill, minmax(min(100%, 14rem), 1fr)); list-style: none; padding: 0; }
.related a { display: flex; align-items: center; gap: var(--space-5); min-height: var(--control); padding: var(--space-4) var(--space-6); border: var(--hairline) solid var(--line-strong); border-radius: var(--radius-sm); font-weight: 500; text-decoration: none; color: var(--ink-strong); }
.related a:hover { background: var(--surface-subtle); }
.related .icon { margin-left: auto; }

.steps { list-style: none; padding: 0; counter-reset: step; display: grid; gap: var(--space-7); grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); }
.steps li { counter-increment: step; display: grid; gap: var(--space-4); }
.steps li::before { content: counter(step); width: 28px; height: 28px; display: grid; place-content: center; border-radius: var(--radius-full); background: var(--accent-tint); color: var(--accent-hover); font-size: var(--text-sm); font-weight: 600; }

.category-list h3 { display: flex; align-items: center; gap: var(--space-4); font-size: var(--text-md); margin-bottom: var(--space-4); }
.category-list ul { list-style: none; padding: 0; display: grid; gap: var(--space-1); font-size: var(--text-sm); }
.category-list li a { display: inline-flex; align-items: center; min-height: 32px; }

.search { max-width: 36rem; }

/* Home hero: text + interactive floor-plan illustration (scripts/lib/hero-art.mjs, home.js).
   Only opacity, fill and transform change, so the browser can composite them cheaply. */
.hero { padding-block: var(--space-7) var(--space-10); }
.hero__grid { display: grid; gap: var(--space-8); align-items: center; }
.hero__text { display: grid; gap: var(--space-6); min-width: 0; }
@media (min-width: 900px) { .hero__grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: var(--space-10); } }
.hero__art { margin: 0; display: grid; gap: var(--space-3); max-width: 30rem; width: 100%; justify-self: center; }
.hero__art svg { display: block; width: 100%; height: auto; overflow: visible; }
.hero__hint { font-size: var(--text-xs); line-height: 16px; color: var(--ink-tertiary); text-align: center; }
.hero__hint--touch { display: none; }
@media (hover: none) {
  .hero__hint--hover { display: none; }
  .hero__hint--touch { display: inline; }
  .hero__art { cursor: pointer; }
}
.ha-bg { fill: var(--surface); stroke: var(--line-strong); }
.ha-t { fill: var(--surface-chip); stroke: transparent; transition: fill 0.25s ease, stroke 0.25s ease; }
.ha-t.on { fill: var(--accent-tint); stroke: var(--accent); }
.ha-dim path { fill: none; stroke: var(--icon); stroke-width: 1; }
.ha-dim text, .ha-caption { font-size: 11px; fill: var(--ink-tertiary); }
.ha-caption { fill: var(--ink-secondary); }
.ha-arrow { fill: none; stroke: var(--icon); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.ha-buy { font-size: 14px; font-weight: 500; fill: var(--ink-strong); }
.ha-num { font-size: 26px; font-weight: 600; fill: var(--accent-hover); }
.ha-unit { font-size: 12px; fill: var(--ink-tertiary); }
.ha-b rect { fill: var(--warning-bg); stroke: var(--warning-ink); stroke-width: 1; }
.ha-b path { fill: none; stroke: var(--warning-ink); stroke-width: 1; }
.ha-b { opacity: 0; transform: translateY(-8px); transition: opacity 0.25s ease, transform 0.25s ease; transition-delay: calc(var(--i, 0) * 25ms); }
.ha-b.on { opacity: 1; transform: none; }
@media (forced-colors: active) {
  .ha-bg, .ha-t, .ha-b rect { fill: Canvas; stroke: CanvasText; }
  .ha-t.on { fill: Highlight; stroke: Highlight; }
  .ha-buy, .ha-num, .ha-unit, .ha-dim text, .ha-caption { fill: CanvasText; }
  .ha-dim path, .ha-arrow, .ha-b path { stroke: CanvasText; }
}
.search .input { min-height: 52px; }

.disclaimer { padding: var(--space-7); border: var(--hairline) solid var(--line-strong); border-radius: var(--radius-md); font-size: var(--text-sm); color: var(--ink-secondary); max-width: var(--measure); display: grid; gap: var(--space-4); }

/* ==========================================================================
   12. Media: reduced motion, forced colors, print
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

@media (forced-colors: active) {
  .input, .select select, .btn, .chip span, .card, .result, .calc-card, .table-wrap { border-color: CanvasText; }
  .chip input:checked + span { background: Highlight; color: HighlightText; forced-color-adjust: none; }
  .badge, .callout { border: 1px solid CanvasText; }
  :focus-visible, .input:focus-within { outline-color: Highlight; }
}

@media print {
  .site-header, .site-footer, .skip-link, .mini-summary, .btn-row, .no-print, .breadcrumb { display: none !important; }
  body { font-size: 11pt; color: #000; background: #fff; }
  .workbench, .band { background: none; padding: 0; }
  .calc { grid-template-columns: 1fr 1fr; gap: 12pt; }
  .card, .result { border: 1px solid #999; break-inside: avoid; }
  a { text-decoration: none; }
}

/* ---- Shareable guides under the calculator ------------------------------ */
.guides {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8) var(--space-7);
  margin-block: var(--space-7) var(--space-8);
}
@media (min-width: 600px) { .guides { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.guide { margin: 0; display: grid; gap: var(--space-4); align-content: start; }
.guide__img { display: block; aspect-ratio: 2 / 3; border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--line-strong); background: var(--surface-subtle); }
.guide__img img { display: block; width: 100%; height: 100%; }
.guide__title { display: block; font-weight: 600; font-size: var(--text-sm); line-height: 1.4; color: var(--ink); }
.guide__actions { display: flex; flex-wrap: wrap; gap: 0 var(--space-7); font-size: var(--text-sm); }
.guide__actions a { display: inline-flex; align-items: center; min-height: 44px; }
.guides + .disclosure { margin-top: 0; }