:root {
  --green: #00a651;
  --green-dark: #007a3c;
  --cream: #ededa5;
  --cream-soft: #f7f7dc;
  --ink: #1d2a22;
  --muted: #5b6b61;
  --line: #d9dcc4;
  --surface: #ffffff;
  --page: #fbfbf2;
  --fail: #b3261e;
  --fail-soft: #fdecea;
  --radius: 10px;
  color-scheme: light;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--page);
  line-height: 1.45;
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  background: #fff;
  border-bottom: 6px solid var(--green);
  box-shadow: 0 1px 0 var(--line);
  padding: 12px 0;
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
}
.site-logo { display: block; line-height: 0; }
.site-logo img { width: 260px; max-width: 100%; height: auto; }
.header-end {
  display: flex;
  align-items: center;
  gap: 18px;
}
.site-strapline {
  display: grid;
  text-align: right;
  gap: 2px;
}
.cart-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line);
  background: var(--cream-soft);
  color: var(--green-dark);
  border-radius: 999px;
  padding: 7px 12px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.cart-pill:hover { border-color: var(--green); }
.cart-pill.has-items { background: var(--green); border-color: var(--green); color: #fff; }
.cart-pill.bump { animation: bump .35s ease; }
@keyframes bump { 50% { transform: scale(1.15); } }
@media (prefers-reduced-motion: reduce) { .cart-pill.bump { animation: none; } }

.toast {
  position: fixed;
  z-index: 10;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  max-width: calc(100vw - 32px);
  background: var(--ink);
  color: #fff;
  padding: 12px 18px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, .25);
  font-weight: 600;
}
.toast[hidden] { display: none; }
.site-strapline strong { color: var(--green-dark); font-size: 1.1rem; }
.site-strapline span { color: var(--muted); font-size: .875rem; }
@media (max-width: 640px) {
  .site-logo img { width: 170px; }
  .header-row { flex-wrap: nowrap; }
  .site-strapline { display: none; }
  .site-strapline { text-align: left; }
  .site-strapline span { display: none; }
}

.configurator {
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: 28px;
  padding-top: 28px;
  padding-bottom: 48px;
  align-items: start;
}

@media (max-width: 760px) {
  .configurator { grid-template-columns: 1fr; }
  /* One sign: show it first. Whole building: keep the floor range above the long list. */
  .configurator:not([data-mode="range"]) .preview-column { order: -1; }
  .configurator { gap: 20px; }
}

/* Options ---------------------------------------------------------------- */
.options {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 20px 20px;
}
.reset-link {
  position: absolute;
  top: 18px;
  right: 20px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--green-dark);
}
.reset-link::before { content: "↺ "; }

fieldset {
  border: 0;
  margin: 20px 0 0;
  padding: 0;
  min-width: 0;
}
fieldset[hidden] { display: none; }

legend {
  font-weight: 600;
  margin-bottom: 8px;
  padding: 0;
}

.segmented {
  display: flex;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.segmented label {
  flex: 1;
  text-align: center;
  cursor: pointer;
  position: relative;
}
.segmented input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
}
.segmented label:has(input) {
  padding: 9px 8px;
}
.segmented label + label { border-left: 1px solid var(--line); }
.segmented label:has(input:checked) {
  background: var(--green);
  color: #fff;
  font-weight: 600;
}
.segmented label:has(input:focus-visible) {
  outline: 3px solid var(--green-dark);
  outline-offset: -3px;
}

.stepper {
  display: flex;
  align-items: stretch;
  gap: 0;
  width: fit-content;
}
.stepper button {
  width: 48px;
  font-size: 1.4rem;
  border: 1px solid var(--line);
  background: var(--cream-soft);
  color: var(--ink);
  cursor: pointer;
}
.stepper button:first-child { border-radius: 8px 0 0 8px; }
.stepper button:last-child { border-radius: 0 8px 8px 0; }
.stepper button:hover { background: var(--cream); }
.stepper input {
  width: 90px;
  text-align: center;
  font-size: 1.4rem;
  font-weight: 600;
  border: 1px solid var(--line);
  border-left: 0;
  border-right: 0;
  padding: 8px 4px;
  -moz-appearance: textfield;
}
.stepper input::-webkit-inner-spin-button,
.stepper input::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }

input[type="text"].short {
  width: 90px;
  font-size: 1.2rem;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  text-transform: uppercase;
}

input:focus-visible, button:focus-visible {
  outline: 3px solid var(--green-dark);
  outline-offset: 1px;
}

.check {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 10px;
  cursor: pointer;
}
.check input { accent-color: var(--green); width: 18px; height: 18px; }

.hint {
  color: var(--muted);
  font-size: .875rem;
  margin: 6px 0 0;
}

.primary {
  margin-top: 16px;
  background: var(--green);
  color: #fff;
  border: 0;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 600;
}

/* Preview ---------------------------------------------------------------- */
.preview-stage {
  background:
    linear-gradient(135deg, #e9eadf 25%, transparent 25%) 0 0 / 24px 24px,
    linear-gradient(225deg, #e9eadf 25%, transparent 25%) 0 0 / 24px 24px,
    #f1f2e8;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(16px, 5vw, 48px);
  display: grid;
  place-items: center;
  min-height: 220px;
}
.preview-stage svg {
  width: calc(var(--sign-scale, 1) * 100%);
  height: auto;
  transition: width .15s ease;
  filter: drop-shadow(0 6px 14px rgba(0, 0, 0, .18));
}

.preview-meta {
  margin: 10px 2px 0;
  color: var(--muted);
  min-height: 1.45em;
}
.preview-meta strong { color: var(--ink); }

.compliance {
  margin-top: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 4px 20px;
}
.compliance[open] { padding-bottom: 12px; }
.compliance:empty { display: none; }
.compliance > summary {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 10px 0;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.compliance > summary { list-style: none; }
.compliance > summary::-webkit-details-marker { display: none; }
.compliance > summary::before {
  content: "▸";
  color: var(--muted);
  transition: transform .15s;
}
.compliance[open] > summary::before { transform: rotate(90deg); }
.compliance > summary.pass { color: var(--green-dark); }
.compliance > summary.fail { color: var(--fail); }
.summary-hint {
  margin-left: auto;
  font-size: .8125rem;
  font-weight: 400;
  color: var(--muted);
}
.compliance[open] > summary { margin-bottom: 8px; }
.checks {
  list-style: none;
  margin: 0;
  padding: 0;
}
.checks li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  align-items: baseline;
  padding: 7px 0 7px 26px;
  border-top: 1px solid #eef0e2;
  position: relative;
}
.checks li::before {
  position: absolute;
  left: 0;
  font-weight: 700;
}
.checks li.pass::before { content: "✓"; color: var(--green); }
.checks li.fail::before { content: "✕"; color: var(--fail); }
.checks li.fail { background: var(--fail-soft); }
.clause {
  font-size: .75rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--cream-soft);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 0 5px;
}
.detail {
  margin-left: auto;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.install-note {
  color: var(--muted);
  font-size: .875rem;
  margin: 14px 2px 0;
}

.preview[aria-busy="true"] { opacity: .6; transition: opacity .2s .2s; }

label[for] { cursor: pointer; }

.range-fields {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
}
.range-fields label {
  display: block;
  font-size: .875rem;
  color: var(--muted);
  margin-bottom: 4px;
}

/* Building set ----------------------------------------------------------- */
.set-summary {
  border-radius: var(--radius);
  padding: 14px 20px;
  border: 1px solid var(--line);
  border-left: 6px solid var(--green);
  background: var(--surface);
}
.set-summary.fail { border-left-color: var(--fail); }
.set-summary h2 { font-size: 1.05rem; margin: 0 0 4px; }
.set-summary.pass h2 { color: var(--green-dark); }
.set-summary.fail h2 { color: var(--fail); }
.set-summary p { margin: 0; color: var(--muted); }
.set-summary p strong { color: var(--ink); }
.set-summary .note { margin-top: 6px; }

.sign-set {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 14px;
}

.sign-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.sign-card.has-problem { border-color: var(--fail); box-shadow: 0 0 0 1px var(--fail); }
.sign-card.is-skipped .sign-card-art { opacity: .35; }

.sign-card-art {
  background: #f1f2e8;
  padding: 16px;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 7;
}
.sign-card-art svg {
  width: calc(var(--sign-scale, 1) * 100%);
  height: auto;
  filter: drop-shadow(0 3px 6px rgba(0, 0, 0, .16));
}

.sign-card-body {
  padding: 10px 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.sign-card-title {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}
.size {
  color: var(--muted);
  font-size: .8125rem;
  white-space: nowrap;
}
.size.widened {
  color: var(--ink);
  background: var(--cream);
  border-radius: 4px;
  padding: 0 5px;
}
.problem {
  margin: 0;
  color: var(--fail);
  font-size: .875rem;
  font-weight: 600;
}

.qty {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: .875rem;
  color: var(--muted);
  margin-top: auto;
}
.qty input {
  width: 72px;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.sign-card details {
  font-size: .8125rem;
  border-top: 1px solid #eef0e2;
  padding-top: 6px;
}
.sign-card summary {
  cursor: pointer;
  color: var(--muted);
}
.sign-card .checks { margin-top: 6px; }
.sign-card .checks li { padding: 5px 0 5px 20px; }
.sign-card .detail { margin-left: 0; }

.error {
  color: var(--fail);
  font-weight: 600;
  margin: 0;
}

/* Flat rows ------------------------------------------------------------- */
.flat-rows {
  display: grid;
  gap: 10px;
}
.flat-row {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px 12px;
  background: var(--cream-soft);
  display: grid;
  gap: 8px;
}
.flat-row-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.flat-row-label {
  font-size: .8125rem;
  font-weight: 600;
  color: var(--muted);
}
.flat-numbers {
  display: flex;
  gap: 10px;
  align-items: center;
}
.flat-numbers label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .875rem;
}
.flat-numbers input {
  width: 76px;
  font-size: 1.05rem;
  font-weight: 600;
  text-align: center;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}
.segmented.arrows { background: #fff; }
.segmented.arrows label:has(input) {
  padding: 5px 4px;
  font-size: 1.15rem;
  line-height: 1.4;
}
.segmented.arrows label:last-child { font-size: .8125rem; align-content: center; }

.secondary {
  margin-top: 10px;
  background: #fff;
  color: var(--green-dark);
  border: 1px dashed var(--green);
  border-radius: 8px;
  padding: 8px 12px;
  font-weight: 600;
  width: 100%;
  cursor: pointer;
}
.secondary:hover { background: var(--cream-soft); }
.secondary[hidden], .link-button[hidden], .install-note[hidden] { display: none; }

.link-button {
  background: none;
  border: 0;
  padding: 2px 4px;
  color: var(--fail);
  font-size: .8125rem;
  text-decoration: underline;
  cursor: pointer;
}

/* Mode tiles ------------------------------------------------------------ */
.mode-tiles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.mode-tiles label {
  position: relative;
  display: grid;
  gap: 2px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  background: #fff;
}
.mode-tiles input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
}
.mode-tiles strong { font-size: .95rem; }
.mode-tiles span { font-size: .75rem; color: var(--muted); line-height: 1.3; }
.mode-tiles label:hover { border-color: var(--green); }
.mode-tiles label:has(input:checked) {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}
.mode-tiles label:has(input:checked) span { color: #e3f5ea; }
.mode-tiles label:has(input:focus-visible) {
  outline: 3px solid var(--green-dark);
  outline-offset: 2px;
}

/* Building flat numbering ------------------------------------------------ */
.building-flats { margin-top: 12px; }
.building-flats[hidden] { display: none; }
.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 12px;
  align-items: end; /* keep boxes level when a label wraps */
}
.field-grid label,
.select-label {
  display: grid;
  gap: 4px;
  font-size: .8125rem;
  color: var(--muted);
}
.field-grid small { font-size: inherit; opacity: .8; }
.field-grid input,
.select-label select {
  font: inherit;
  font-size: 1rem;
  color: var(--ink);
  padding: 7px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  width: 100%;
}
.field-grid input { font-weight: 600; }
.select-label { margin-top: 12px; }

/* Per-floor flat editor in building cards -------------------------------- */
.flat-editor {
  font-size: .875rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
}
.flat-editor > summary {
  cursor: pointer;
  color: var(--green-dark);
  font-weight: 600;
}
.flat-editor.is-custom { border-color: var(--green); background: #f3fbf6; }
.flat-editor[open] { padding-bottom: 10px; }
.flat-editor[open] > summary { margin-bottom: 8px; }
.flat-editor .flat-row { padding: 8px; background: #fff; min-width: 0; }
/* Narrow cards: the two number boxes share the row equally instead of overflowing it. */
.flat-editor .flat-numbers {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 6px;
}
.flat-editor .flat-numbers label { display: contents; }
.flat-editor .flat-numbers-word { display: none; } /* the row is already labelled */
.flat-editor .flat-numbers input { width: 100%; min-width: 0; padding: 6px 4px; }
.flat-editor .secondary { margin-top: 8px; }
.flat-editor:has([data-no-flats]:checked) :is([data-flat-rows], [data-add-row]) { display: none; }
.flat-editor .check { margin: 0 0 8px; }
.link-button.reset { color: var(--green-dark); margin-top: 6px; }
.set-summary .problem { margin-top: 6px; }

/* Add to cart ------------------------------------------------------------ */
.cart-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 14px;
}
.cart-bar .hint { flex-basis: 100%; margin: 0; }
.cart-qty {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}
.cart-qty input {
  width: 72px;
  font: inherit;
  font-weight: 700;
  text-align: center;
  padding: 9px 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
}
.primary.cart-button {
  margin-top: 0;
  padding: 11px 22px;
  font-size: 1rem;
  cursor: pointer;
}
.primary.cart-button:hover:not(:disabled) { background: var(--green-dark); }
.primary.cart-button:disabled { background: #a9b8ae; cursor: not-allowed; }
.cart-bar.building {
  justify-content: space-between;
  border-top: 1px solid #eef0e2;
  padding-top: 12px;
}
.cart-bar.building .check { margin: 0; font-weight: 600; }

.select-sign { display: inline-flex; align-self: center; cursor: pointer; }
.select-sign input { width: 18px; height: 18px; accent-color: var(--green); margin: 0; cursor: pointer; }
.select-sign input:disabled { cursor: not-allowed; }
.sign-card-title { justify-content: flex-start; }
.sign-card-title .size { margin-left: auto; }
.sign-card.is-selected { border-color: var(--green); box-shadow: 0 0 0 1px var(--green); }
.sign-card.has-problem.is-selected { border-color: var(--fail); }

/* Text for screen readers only */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}