:root {
  --ukcalc-navy: #0F172A;
  --ukcalc-navy-light: #1E293B;
  --ukcalc-blue: #2563EB;
  --ukcalc-blue-hover: #1D4ED8;
  --ukcalc-emerald: #059669;
  --ukcalc-emerald-light: #ECFDF5;
  --ukcalc-red: #DC2626;
  --ukcalc-red-light: #FEF2F2;
  --ukcalc-amber: #D97706;
  --ukcalc-amber-light: #FFFBEB;
  --ukcalc-purple: #7C3AED;
  --ukcalc-purple-light: #F5F3FF;
  --ukcalc-slate-50: #F8FAFC;
  --ukcalc-slate-100: #F1F5F9;
  --ukcalc-slate-200: #E2E8F0;
  --ukcalc-slate-300: #CBD5E1;
  --ukcalc-slate-400: #94A3B8;
  --ukcalc-slate-500: #64748B;
  --ukcalc-slate-700: #334155;
  --ukcalc-slate-900: #0F172A;
  --ukcalc-radius-card: 14px;
  --ukcalc-radius-input: 10px;
  --ukcalc-radius-sm: 6px;
  --ukcalc-shadow-card: 0 1px 3px rgba(15, 23, 42, 0.08), 0 8px 24px rgba(15, 23, 42, 0.05);
  --ukcalc-shadow-hover: 0 4px 6px -1px rgba(15, 23, 42, 0.1), 0 2px 4px -2px rgba(15, 23, 42, 0.1);
  --ukcalc-font: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Base Wrapper & Scope */
.ukcalc-app {
  font-family: var(--ukcalc-font);
  color: var(--ukcalc-slate-700);
  line-height: 1.5;
  box-sizing: border-box;
  margin: 1.5rem 0 2.5rem 0;
  width: 100%;
}

.ukcalc-app *,
.ukcalc-app *::before,
.ukcalc-app *::after {
  box-sizing: inherit;
}

/* Card Container */
.ukcalc-card {
  background: #FFFFFF;
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-card);
  box-shadow: var(--ukcalc-shadow-card);
  overflow: hidden;
}

/* Card Header */
.ukcalc-header {
  padding: 1.25rem 1.5rem;
  background: var(--ukcalc-slate-50);
  border-bottom: 1px solid var(--ukcalc-slate-200);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.ukcalc-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ukcalc-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ukcalc-navy);
  letter-spacing: -0.015em;
}

.ukcalc-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  border-radius: 9999px;
  background: var(--ukcalc-emerald-light);
  color: var(--ukcalc-emerald);
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.ukcalc-badge.badge-neutral {
  background: var(--ukcalc-slate-100);
  color: var(--ukcalc-slate-700);
  border-color: var(--ukcalc-slate-200);
}

/* 2-Column Responsive Layout */
.ukcalc-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

@media (min-width: 900px) {
  .ukcalc-grid {
    grid-template-columns: 4.5fr 5.5fr;
  }
}

/* Form Controls Column */
.ukcalc-controls {
  padding: 1.5rem;
  background: #FFFFFF;
  border-bottom: 1px solid var(--ukcalc-slate-200);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 900px) {
  .ukcalc-controls {
    border-bottom: none;
    border-right: 1px solid var(--ukcalc-slate-200);
  }
}

/* Results Column */
.ukcalc-results {
  padding: 1.5rem;
  background: var(--ukcalc-slate-50);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Input Form Groups */
.ukcalc-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.ukcalc-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ukcalc-slate-900);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ukcalc-label-hint {
  font-size: 0.75rem;
  font-weight: normal;
  color: var(--ukcalc-slate-500);
}

.ukcalc-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.ukcalc-prefix {
  position: absolute;
  left: 1rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--ukcalc-slate-500);
  pointer-events: none;
  font-variant-numeric: tabular-nums;
}

.ukcalc-suffix {
  position: absolute;
  right: 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ukcalc-slate-500);
  pointer-events: none;
}

.ukcalc-input {
  width: 100%;
  min-height: 48px;
  padding: 0.625rem 1rem;
  font-size: 1.125rem;
  font-weight: 600;
  font-family: var(--ukcalc-font);
  font-variant-numeric: tabular-nums;
  color: var(--ukcalc-navy);
  background: #FFFFFF;
  border: 1.5px solid var(--ukcalc-slate-300);
  border-radius: var(--ukcalc-radius-input);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  outline: none;
}

.ukcalc-input.has-prefix {
  padding-left: 2.25rem;
}

.ukcalc-input.has-suffix {
  padding-right: 2.5rem;
}

.ukcalc-input:hover {
  border-color: var(--ukcalc-slate-400);
}

.ukcalc-input:focus-visible,
.ukcalc-input:focus {
  border-color: var(--ukcalc-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.ukcalc-select {
  width: 100%;
  min-height: 48px;
  padding: 0.625rem 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  font-family: var(--ukcalc-font);
  color: var(--ukcalc-navy);
  background-color: #FFFFFF;
  border: 1.5px solid var(--ukcalc-slate-300);
  border-radius: var(--ukcalc-radius-input);
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%2364748B' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.25rem 1.25rem;
  padding-right: 2.5rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.ukcalc-select:hover {
  border-color: var(--ukcalc-slate-400);
}

.ukcalc-select:focus-visible,
.ukcalc-select:focus {
  border-color: var(--ukcalc-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

/* Segmented Buttons (Toggles) */
.ukcalc-segmented {
  display: flex;
  background: var(--ukcalc-slate-100);
  border-radius: var(--ukcalc-radius-input);
  padding: 0.25rem;
  gap: 0.25rem;
  border: 1px solid var(--ukcalc-slate-200);
  overflow-x: auto;
}

.ukcalc-segmented-btn {
  flex: 1;
  min-height: 48px;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--ukcalc-font);
  text-align: center;
  background: transparent;
  color: var(--ukcalc-slate-700);
  border: none;
  border-radius: calc(var(--ukcalc-radius-input) - 2px);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
  outline: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ukcalc-segmented-btn:hover:not(.active) {
  color: var(--ukcalc-navy);
  background: rgba(255, 255, 255, 0.5);
}

.ukcalc-segmented-btn.active {
  background: #FFFFFF;
  color: var(--ukcalc-blue);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.ukcalc-segmented-btn:focus-visible {
  box-shadow: 0 0 0 2px var(--ukcalc-blue);
}

/* Advanced / Collapsible Section */
.ukcalc-accordion {
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-input);
  background: var(--ukcalc-slate-50);
  overflow: hidden;
}

.ukcalc-accordion-header {
  width: 100%;
  min-height: 48px;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--ukcalc-navy);
  cursor: pointer;
  text-align: left;
}

.ukcalc-accordion-header svg {
  transition: transform 0.2s ease;
}

.ukcalc-accordion.open .ukcalc-accordion-header svg {
  transform: rotate(180deg);
}

.ukcalc-accordion-body {
  display: none;
  padding: 1rem;
  background: #FFFFFF;
  border-top: 1px solid var(--ukcalc-slate-200);
  flex-direction: column;
  gap: 1rem;
}

.ukcalc-accordion.open .ukcalc-accordion-body {
  display: flex;
}

/* Checkbox and Radios */
.ukcalc-checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ukcalc-slate-700);
  cursor: pointer;
  user-select: none;
  min-height: 36px;
}

.ukcalc-checkbox {
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 4px;
  border: 1.5px solid var(--ukcalc-slate-300);
  accent-color: var(--ukcalc-blue);
  cursor: pointer;
}

/* Hero Net Pay Result Banner */
.ukcalc-hero-stat {
  background: #FFFFFF;
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-input);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.ukcalc-hero-stat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--ukcalc-emerald);
}

.ukcalc-hero-stat.stat-danger::before {
  background: var(--ukcalc-red);
}

.ukcalc-hero-stat.stat-blue::before {
  background: var(--ukcalc-blue);
}

.ukcalc-hero-title {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ukcalc-slate-500);
  margin: 0;
}

.ukcalc-hero-value {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--ukcalc-emerald);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.ukcalc-hero-stat.stat-danger .ukcalc-hero-value {
  color: var(--ukcalc-red);
}

.ukcalc-hero-stat.stat-blue .ukcalc-hero-value {
  color: var(--ukcalc-navy);
}

.ukcalc-hero-subtitle {
  font-size: 0.8125rem;
  color: var(--ukcalc-slate-500);
}

/* Period Switcher Tabs */
.ukcalc-periods {
  display: flex;
  background: var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-input);
  padding: 0.25rem;
  gap: 0.25rem;
  overflow-x: auto;
}

.ukcalc-period-tab {
  flex: 1;
  min-height: 48px;
  padding: 0.5rem 0.5rem;
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: var(--ukcalc-font);
  text-align: center;
  background: transparent;
  color: var(--ukcalc-slate-700);
  border: none;
  border-radius: calc(var(--ukcalc-radius-input) - 2px);
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.ukcalc-period-tab:hover:not(.active) {
  background: rgba(255, 255, 255, 0.6);
  color: var(--ukcalc-navy);
}

.ukcalc-period-tab.active {
  background: #FFFFFF;
  color: var(--ukcalc-blue);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

/* Secondary Stat Row */
.ukcalc-stat-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

@media (min-width: 480px) {
  .ukcalc-stat-row {
    grid-template-columns: repeat(3, 1fr);
  }
}

.ukcalc-stat-box {
  background: #FFFFFF;
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-input);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.ukcalc-stat-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ukcalc-slate-500);
}

.ukcalc-stat-value {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ukcalc-navy);
  font-variant-numeric: tabular-nums;
}

/* Deductions Breakdown Table */
.ukcalc-breakdown-card {
  background: #FFFFFF;
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-input);
  overflow: hidden;
}

.ukcalc-table-wrap {
  width: 100%;
  overflow-x: auto;
}

.ukcalc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  text-align: left;
}

.ukcalc-table th {
  background: var(--ukcalc-slate-100);
  padding: 0.625rem 0.875rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ukcalc-slate-700);
  border-bottom: 1px solid var(--ukcalc-slate-200);
}

.ukcalc-table td {
  padding: 0.625rem 0.875rem;
  border-bottom: 1px solid var(--ukcalc-slate-100);
  color: var(--ukcalc-slate-700);
  font-variant-numeric: tabular-nums;
}

.ukcalc-table tr:last-child td {
  border-bottom: none;
}

.ukcalc-table td.num {
  text-align: right;
  font-weight: 600;
}

.ukcalc-table tr.total-row td {
  background: var(--ukcalc-slate-50);
  font-weight: 700;
  color: var(--ukcalc-navy);
  border-top: 1.5px solid var(--ukcalc-slate-200);
}

.ukcalc-table .rate-tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  background: var(--ukcalc-slate-100);
  color: var(--ukcalc-slate-700);
  font-weight: 600;
  margin-left: 0.25rem;
}

/* Charts (Hand-rolled SVG) */
.ukcalc-chart-card {
  background: #FFFFFF;
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-input);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.ukcalc-chart-title {
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ukcalc-slate-500);
  margin: 0;
}

.ukcalc-donut-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 480px) {
  .ukcalc-donut-wrap {
    flex-direction: row;
    justify-content: space-around;
  }
}

.ukcalc-svg-donut {
  width: 140px;
  height: 140px;
  transform: rotate(-90deg);
}

.ukcalc-donut-circle-bg {
  fill: none;
  stroke: var(--ukcalc-slate-100);
  stroke-width: 24;
}

.ukcalc-donut-segment {
  fill: none;
  stroke-width: 24;
  transition: stroke-dasharray 0.3s ease, stroke-dashoffset 0.3s ease;
}

.ukcalc-legend {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.ukcalc-legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--ukcalc-slate-700);
}

.ukcalc-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.ukcalc-legend-val {
  margin-left: auto;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* Horizontal Stacked Bar */
.ukcalc-bar-track {
  width: 100%;
  height: 20px;
  background: var(--ukcalc-slate-200);
  border-radius: 9999px;
  overflow: hidden;
  display: flex;
}

.ukcalc-bar-fill {
  height: 100%;
  transition: width 0.3s ease;
}

/* Alerts and Callouts */
.ukcalc-alert {
  padding: 0.875rem 1rem;
  border-radius: var(--ukcalc-radius-input);
  font-size: 0.875rem;
  line-height: 1.4;
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
}

.ukcalc-alert-info {
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  color: #1E40AF;
}

.ukcalc-alert-warning {
  background: var(--ukcalc-amber-light);
  border: 1px solid #FDE68A;
  color: #92400E;
}

.ukcalc-alert-danger {
  background: var(--ukcalc-red-light);
  border: 1px solid #FECACA;
  color: #991B1B;
}

/* Share & Action Bar */
.ukcalc-action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.5rem;
  border-top: 1px solid var(--ukcalc-slate-200);
  font-size: 0.8125rem;
  color: var(--ukcalc-slate-500);
}

.ukcalc-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: none;
  border: 1px solid var(--ukcalc-slate-300);
  border-radius: 6px;
  min-height: 48px;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ukcalc-slate-700);
  cursor: pointer;
  transition: all 0.15s ease;
}

.ukcalc-share-btn:hover {
  background: var(--ukcalc-slate-100);
  color: var(--ukcalc-navy);
}

.ukcalc-share-btn:focus-visible {
  outline: 2px solid var(--ukcalc-blue);
}

/* Key Facts Box (Callout) */
.ukcalc-key-facts {
  margin: 1.5rem 0;
  padding: 1.25rem;
  border-radius: var(--ukcalc-radius-card);
  background: #FFFFFF;
  border: 1px solid var(--ukcalc-slate-200);
  border-left: 4px solid var(--ukcalc-blue);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.05);
}

.ukcalc-key-facts-title {
  margin: 0 0 0.75rem 0;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ukcalc-navy);
}

.ukcalc-key-facts-list {
  margin: 0;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--ukcalc-slate-700);
}

.ukcalc-key-facts-list a {
  color: var(--ukcalc-blue);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.ukcalc-key-facts-list a:hover {
  color: var(--ukcalc-blue-hover);
}

/* No-JS fallback visibility & screen reader utilities */
.ukcalc-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.ukcalc-nojs-fallback {
  background: #FFFFFF;
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-card);
  padding: 1.5rem;
}

.ukcalc-nojs-notice {
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  color: #1E40AF;
  padding: 0.75rem 1rem;
  border-radius: var(--ukcalc-radius-input);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

/* Quick-select pills */
.ukcalc-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: 0.5rem;
}
.ukcalc-pill {
  background: var(--ukcalc-slate-100);
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: 9999px;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ukcalc-slate-700);
  cursor: pointer;
  transition: all 0.15s ease;
}
.ukcalc-pill:hover {
  background: var(--ukcalc-slate-200);
  color: var(--ukcalc-navy);
}
.ukcalc-pill.active {
  background: var(--ukcalc-blue);
  color: #FFFFFF;
  border-color: var(--ukcalc-blue);
}

/* Tooltips */
.ukcalc-tooltip-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ukcalc-slate-200);
  color: var(--ukcalc-slate-700);
  font-size: 0.7rem;
  font-weight: 700;
  cursor: help;
  position: relative;
  margin-left: 0.375rem;
}
.ukcalc-tooltip-icon:hover .ukcalc-tooltip-text {
  visibility: visible;
  opacity: 1;
}
.ukcalc-tooltip-text {
  visibility: hidden;
  opacity: 0;
  width: 220px;
  background-color: var(--ukcalc-navy);
  color: #fff;
  text-align: left;
  border-radius: 6px;
  padding: 0.5rem 0.625rem;
  position: absolute;
  z-index: 100;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  line-height: 1.35;
  font-weight: normal;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transition: opacity 0.2s ease;
  pointer-events: none;
}

/* Disclosures (<details>) */
.ukcalc-disclosure {
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-sm);
  background: #FFFFFF;
  margin: 1rem 0;
  overflow: hidden;
}
.ukcalc-disclosure summary {
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: var(--ukcalc-navy);
  cursor: pointer;
  background: var(--ukcalc-slate-50);
  user-select: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ukcalc-disclosure summary::-webkit-details-marker {
  display: none;
}
.ukcalc-disclosure summary::after {
  content: '▼';
  font-size: 0.65rem;
  color: var(--ukcalc-slate-500);
  transition: transform 0.2s ease;
}
.ukcalc-disclosure[open] summary::after {
  transform: rotate(180deg);
}
.ukcalc-disclosure-content {
  padding: 1rem;
  border-top: 1px solid var(--ukcalc-slate-200);
}

/* Click-to-copy */
.ukcalc-clickable-val {
  cursor: copy;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  border-bottom: 1px dashed var(--ukcalc-slate-300);
  transition: color 0.15s ease;
}
.ukcalc-clickable-val:hover {
  color: var(--ukcalc-blue);
}

/* Toast Notification */
.ukcalc-toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--ukcalc-navy);
  color: #FFFFFF;
  padding: 0.625rem 1.25rem;
  border-radius: var(--ukcalc-radius-sm);
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 9999;
  opacity: 0;
  transform: translateY(10px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
.ukcalc-toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Share button */
.ukcalc-share-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--ukcalc-slate-100);
  border: 1px solid var(--ukcalc-slate-200);
  border-radius: var(--ukcalc-radius-sm);
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ukcalc-slate-700);
  cursor: pointer;
  transition: all 0.15s ease;
}
.ukcalc-share-btn:hover {
  background: var(--ukcalc-slate-200);
  color: var(--ukcalc-navy);
}

/* Compare / Side-by-side */
.ukcalc-compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}
@media (max-width: 640px) {
  .ukcalc-compare-grid {
    grid-template-columns: 1fr;
  }
}
.delta-positive {
  color: var(--ukcalc-emerald);
  font-weight: 600;
}
.delta-negative {
  color: var(--ukcalc-red);
  font-weight: 600;
}


/* ── Accessibility: Reduced Motion (ui-ux-pro-max requirement) ─────────── */
@media (prefers-reduced-motion: reduce) {
  .faq-accordion,
  .faq-answer,
  .freshness-banner,
  .data-table tr,
  .ukcalc-result-row,
  .ukcalc-input,
  .ukcalc-select,
  .ukcalc-btn,
  .ukcalc-share-btn,
  .ukcalc-segmented-btn,
  .key-facts-box,
  .methodology-box,
  .regional-property-notice {
    transition: none !important;
    animation: none !important;
  }
}

/* ── Accessibility: Global focus-visible ring (ui-ux-pro-max requirement) ─ */
:focus-visible {
  outline: 2px solid var(--ukc-blue-600, #2563eb);
  outline-offset: 2px;
}