/* ==========================================================================
   TakeHome PT – Clean, Modern Styles
   ========================================================================== */

/* Root Variables
   ========================================================================== */
:root {
  /* Cool Nature-Inspired Harmony Palette (WCAG AA Compliant) */
  --aqua: #157973;          /* Darkened for 4.5:1 contrast on #F8F9FA */
  --aura: #6B5785;          /* Darkened from #9B87B5 for 4.5:1 contrast */
  --green: #5D7A4D;         /* Darkened from #86A873 for 4.5:1 contrast */
  --dusk: #4A6B8A;
  --neutral-50: #F8F9FA;
  --neutral-100: #F1F3F5;
  --neutral-200: #E9ECEF;
  --neutral-300: #DEE2E6;
  --neutral-400: #CED4DA;
  --neutral-500: #ADB5BD;
  --neutral-600: #59636A;   /* Darkened for 4.5:1 contrast on #F8F9FA */
  --neutral-700: #495057;
  --neutral-800: #343A40;
  --neutral-900: #212529;
  --butter: #F4E4C1;
  --coral: #C54A35;         /* Darkened from #E8725D for 4.5:1 contrast */

  /* Semantic Colors */
  --color-primary: var(--aqua);
  --color-primary-dark: #239B95;
  --color-secondary: var(--aura);
  --color-success: var(--green);
  --color-warning: var(--butter);
  --color-error: var(--coral);
  --color-info: var(--dusk);

  /* Typography */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 2rem;        /* 32px */
  --text-4xl: 2.5rem;      /* 40px */

  --line-tight: 1.25;
  --line-snug: 1.375;
  --line-normal: 1.5;
  --line-relaxed: 1.625;
  --line-loose: 2;

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Light Mode Colors */
  --bg-body: var(--neutral-50);
  --bg-surface: #FFFFFF;
  --bg-elevated: #FFFFFF;
  --color-text: var(--neutral-900);
  --color-text-muted: var(--neutral-600);
  --color-border: var(--neutral-300);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-body: #0F1419;
    --bg-surface: #1A1F26;
    --bg-elevated: #242A33;
    --color-text: var(--neutral-100);
    --color-text-muted: var(--neutral-400);
    --color-border: var(--neutral-700);

    --aqua: #3DD9D1;
    --aura: #B19DD6;
    --green: #A3C68A;
    --dusk: #6B8FAD;
    --coral: #FF9580;
    --butter: #F7EDCC;
  }
}

/* Base Styles
   ========================================================================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: system-ui, -apple-system, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  font-size: var(--text-base);
  line-height: var(--line-normal);
  color: var(--color-text);
  background: var(--bg-body);
}

/* Layout
   ========================================================================== */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
  width: 100%;
}

.main {
  flex: 1;
  padding: var(--space-8) 0;
}

/* Header
   ========================================================================== */
.header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: white;
  padding: var(--space-8) 0;
}

.header__title {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.header__subtitle {
  font-size: var(--text-lg);
  opacity: 0.95;
  margin-bottom: var(--space-2);
}

.header__tagline {
  font-size: var(--text-sm);
  opacity: 0.85;
  font-weight: 400;
}

/* Tabs Navigation
   ========================================================================== */
.tabs {
  background: var(--bg-surface);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.tabs .container {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab {
  background: transparent;
  border: none;
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
}

.tab::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-primary);
  opacity: 0;
  transition: opacity var(--transition);
}

.tab:hover {
  color: var(--color-text);
}

.tab:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  background: rgba(21, 121, 115, 0.05);
}

.tab.active {
  color: var(--color-primary);
}

.tab.active::after {
  opacity: 1;
}

/* Tab Content
   ========================================================================== */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.3s ease-in;
}

/* Visual cue that Results are ready to view */
#results-ready-indicator {
  margin-left: 0.25rem;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Results notice banner - WCAG AA compliant contrast */
.results-notice {
  background: var(--color-primary);
  border-left: 4px solid var(--color-primary-dark);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.results-notice p {
  margin: 0;
  font-weight: 600;
  color: white;
  font-size: var(--text-base);
  line-height: 1.6;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.tab-content > h2 {
  font-size: var(--text-2xl);
  font-weight: 600;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

/* Forms
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-6);
}

label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--color-text);
  font-size: var(--text-sm);
}

.required {
  color: var(--color-error);
  font-weight: 700;
  margin-left: var(--space-1);
}

.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  background: var(--bg-surface);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.input:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(21, 121, 115, 0.15);
}

.input:hover:not(:focus) {
  border-color: var(--neutral-400);
}

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

.input-group__prefix {
  position: absolute;
  left: var(--space-4);
  color: var(--color-text-muted);
  font-weight: 500;
  pointer-events: none;
}

.input-group .input {
  padding-left: var(--space-8);
}

.help-text {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--line-snug);
}

.intro-text {
  margin-bottom: var(--space-6);
  color: var(--color-text-muted);
  line-height: var(--line-relaxed);
}

/* Radio Cards
   ========================================================================== */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.radio-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-surface);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.radio-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-1px);
}

.radio-card input[type="radio"] {
  margin-top: 0.2em;
  flex-shrink: 0;
  accent-color: var(--color-primary);
}

.radio-card input[type="radio"]:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.radio-card__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.radio-card__content strong {
  display: block;
  font-weight: 600;
  color: var(--color-text);
}

.radio-card__content span {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.radio-card.selected {
  background: rgba(45, 191, 184, 0.05);
  box-shadow: var(--shadow-md);
}

/* Checkboxes
   ========================================================================== */
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  font-weight: 400;
}

.checkbox input[type="checkbox"] {
  flex-shrink: 0;
  width: 1.125rem;
  height: 1.125rem;
  accent-color: var(--color-primary);
}

.checkbox input[type="checkbox"]:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.checkbox input[type="checkbox"]:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.checkbox:has(input[type="checkbox"]:disabled) {
  opacity: 0.5;
  cursor: not-allowed;
}

.checkbox:has(input[type="checkbox"]:disabled) span {
  color: var(--color-text-muted);
  text-decoration: line-through;
}

/* Details / Collapsible
   ========================================================================== */
.details {
  margin-top: var(--space-4);
  margin-bottom: var(--space-6);
}

.details summary {
  cursor: pointer;
  font-weight: 500;
  color: var(--color-primary);
  padding: var(--space-3) 0;
  user-select: none;
  list-style: none;
}

.details summary::-webkit-details-marker {
  display: none;
}

.details summary::before {
  content: '▸';
  display: inline-block;
  margin-right: var(--space-2);
  transition: transform var(--transition);
}

.details[open] summary::before {
  transform: rotate(90deg);
}

.details[open] > *:not(summary) {
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.details > *:not(summary) {
  margin-top: var(--space-4);
}

/* Expense Split Layout
   ========================================================================== */
.expense-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

@media (min-width: 768px) {
  .expense-split {
    grid-template-columns: 1fr 1fr;
  }
}

.expense-summary,
.deduction-summary {
  background: var(--bg-surface);
  padding: var(--space-4);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-top: var(--space-4);
}

.expense-summary__item,
.deduction-summary__item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
}

.expense-summary__item:not(:last-child),
.deduction-summary__item:not(:last-child) {
  border-bottom: 1px solid var(--color-border);
}

.expense-summary__item strong,
.deduction-summary__item strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* Alerts
   ========================================================================== */
.alert {
  padding: var(--space-4);
  border-radius: var(--radius);
  margin-top: var(--space-4);
  line-height: var(--line-relaxed);
}

.alert--warning {
  background: rgba(244, 228, 193, 0.2);
  color: var(--neutral-800);
}

.alert--error {
  background: rgba(232, 114, 93, 0.2);
  color: var(--neutral-800);
}

@media (prefers-color-scheme: dark) {
  .alert--warning {
    background: rgba(244, 228, 193, 0.1);
    color: var(--butter);
  }

  .alert--error {
    background: rgba(232, 114, 93, 0.1);
    color: var(--coral);
  }
}

/* Results Section
   ========================================================================== */
.zero-state {
  text-align: center;
  padding: var(--space-12) var(--space-4);
}

.zero-state p {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.zero-state.is-active {
  display: block;
}

#results-detail.is-dimmed {
  opacity: 0.3;
  pointer-events: none;
}

/* Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 500;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn--primary {
  background: var(--color-primary);
  color: white;
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn--primary:focus {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(21, 121, 115, 0.2);
}

.btn--secondary {
  background: var(--bg-elevated);
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn--secondary:hover {
  background: var(--bg-surface);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn svg {
  display: inline-block;
  vertical-align: middle;
}

/* Summary Cards
   ========================================================================== */
.summary-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .summary-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.summary-card {
  background: var(--bg-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.summary-card--highlight {
  background: linear-gradient(135deg, rgba(45, 191, 184, 0.1) 0%, rgba(155, 135, 181, 0.1) 100%);
  box-shadow: var(--shadow-md);
}

.summary-card--diff {
  background: var(--bg-elevated);
}

.summary-card__label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.summary-card__value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.summary-card__meta {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.summary-card__meta span {
  font-weight: 600;
  color: var(--color-primary);
}

/* Radio Toggle (inline) */
.radio-toggle {
  display: inline-flex;
  gap: var(--space-2);
  background: var(--bg-body);
  padding: var(--space-1);
  border-radius: var(--radius);
}

.radio-toggle label {
  margin: 0;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  display: flex;
  align-items: center;
}

.radio-toggle input[type="radio"] {
  display: none;
}

.radio-toggle input[type="radio"]:checked + span {
  background: var(--color-primary);
  color: white;
}

.radio-toggle span {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

/* Recommendation
   ========================================================================== */
.recommendation {
  background: var(--bg-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: var(--space-8);
}

.recommendation h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.recommendation p {
  line-height: var(--line-relaxed);
  margin-bottom: var(--space-3);
}

.recommendation__meta {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.recommendation__meta strong {
  color: var(--color-primary);
  font-weight: 600;
}

/* Breakdown
   ========================================================================== */
.breakdown {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .breakdown {
    grid-template-columns: 1fr 1fr;
  }
}

.breakdown__col {
  background: var(--bg-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.breakdown__col h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

/* Data List
   ========================================================================== */
.data-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
}

.data-list dt {
  font-weight: 500;
  color: var(--color-text-muted);
}

.data-list dd {
  font-weight: 600;
  color: var(--color-text);
  text-align: right;
}

.data-list__total {
  padding-top: var(--space-3);
  border-top: 2px solid var(--color-border);
  font-size: var(--text-base);
  font-weight: 700 !important;
  color: var(--color-primary) !important;
}

/* Comparison Table
   ========================================================================== */
.comparison-table {
  overflow-x: auto;
  margin-top: var(--space-4);
}

.comparison-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.comparison-table thead {
  background: var(--bg-elevated);
}

.comparison-table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  color: var(--color-text);
}

.comparison-table td {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text);
}

.comparison-table tbody tr {
  border-bottom: 1px solid var(--color-border);
}

.comparison-table tbody tr:last-child {
  border-bottom: none;
}

.comparison-table tbody tr:hover {
  background: var(--bg-elevated);
}

/* Calculation Breakdown
   ========================================================================== */
.calculation-breakdown {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-4);
}

@media (min-width: 768px) {
  .calculation-breakdown {
    grid-template-columns: 1fr 1fr;
  }
}

.calculation-breakdown h4 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-3);
}

.calculation-breakdown h5 {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}

.calc-steps,
.calc-breakdown {
  font-size: var(--text-sm);
  line-height: var(--line-relaxed);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
}

.calc-steps li,
.calc-breakdown li {
  margin-bottom: var(--space-2);
}

.validation-list {
  font-size: var(--text-sm);
  line-height: var(--line-relaxed);
  padding-left: var(--space-5);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}

.validation-list li {
  margin-bottom: var(--space-2);
}

/* Glance
   ========================================================================== */
.glance {
  background: var(--bg-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin-bottom: var(--space-8);
}

.glance h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.glance__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .glance__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.glance__item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.glance__label {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.glance__value {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
}

.chip {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius);
  font-size: var(--text-xs);
  font-weight: 500;
  margin-right: var(--space-2);
}

.chip--muted {
  background: var(--neutral-300);
  color: var(--neutral-700);
}

@media (prefers-color-scheme: dark) {
  .chip--muted {
    background: var(--neutral-700);
    color: var(--neutral-300);
  }
}

/* Results Header
   ========================================================================== */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.results-header h2 {
  margin-bottom: 0;
}

.results-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .results-header {
    flex-direction: column;
    align-items: stretch;
  }

  .results-actions {
    width: 100%;
  }

  .results-actions .btn {
    flex: 1;
    font-size: var(--text-sm);
    padding: var(--space-3) var(--space-4);
  }
}

/* Winner Banner
   ========================================================================== */
.winner-banner {
  background: linear-gradient(135deg, rgba(45, 191, 184, 0.15) 0%, rgba(155, 135, 181, 0.15) 100%);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-5);
  box-shadow: var(--shadow-lg);
}

.winner-banner__icon {
  font-size: 3rem;
  flex-shrink: 0;
}

.winner-banner__content {
  flex: 1;
}

.winner-banner__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.winner-banner__subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.winner-banner__stats {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.winner-stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.winner-stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.winner-stat__value {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
}

@media (max-width: 768px) {
  .winner-banner {
    flex-direction: column;
    text-align: center;
    padding: var(--space-5);
  }

  .winner-banner__icon {
    font-size: 2.5rem;
  }

  .winner-banner__title {
    font-size: var(--text-xl);
  }

  .winner-banner__stats {
    justify-content: center;
  }
}

/* Methodology Sections
   ========================================================================== */
.methodology-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

@media (min-width: 768px) {
  .methodology-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.methodology-section {
  background: var(--bg-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.methodology-section--full {
  grid-column: 1 / -1;
}

.methodology-section h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.methodology-section h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-primary);
}

/* Tax Tables
   ========================================================================== */
.tax-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0;
  font-size: var(--text-sm);
}

.tax-table thead {
  background: var(--bg-elevated);
}

.tax-table th {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  color: var(--color-text);
  border-bottom: 2px solid var(--color-border);
}

.tax-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

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

.tax-table tbody tr:hover {
  background: var(--bg-elevated);
}

@media (max-width: 768px) {
  .tax-table {
    font-size: var(--text-xs);
  }

  .tax-table th,
  .tax-table td {
    padding: var(--space-2) var(--space-3);
  }
}

/* Coefficient Cards
   ========================================================================== */
.coefficient-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

@media (min-width: 640px) {
  .coefficient-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

.coefficient-card {
  background: linear-gradient(135deg, rgba(45, 191, 184, 0.05) 0%, rgba(155, 135, 181, 0.05) 100%);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  text-align: center;
}

.coefficient-card__value {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.coefficient-card__label {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

/* Info List
   ========================================================================== */
.info-list {
  list-style: none;
  padding: 0;
  margin: var(--space-3) 0;
}

.info-list li {
  padding: var(--space-2) 0;
  padding-left: var(--space-6);
  position: relative;
  line-height: var(--line-relaxed);
}

.info-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* Calculation Flow
   ========================================================================== */
.calculation-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-4);
}

@media (min-width: 768px) {
  .calculation-flow {
    grid-template-columns: repeat(2, 1fr);
  }
}

.flow-step {
  background: var(--bg-elevated);
  padding: var(--space-5);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-primary);
}

.flow-step h4 {
  margin-bottom: var(--space-3);
}

/* Disclaimer Box
   ========================================================================== */
.disclaimer-box {
  background: rgba(232, 114, 93, 0.1);
  border: 2px solid var(--color-error);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
}

.disclaimer-box h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

@media (prefers-color-scheme: dark) {
  .disclaimer-box {
    background: rgba(232, 114, 93, 0.15);
  }
}

/* Sources Section
   ========================================================================== */
.sources-section {
  background: var(--bg-surface);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.sources-section h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.sources-section a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

.sources-section a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* Mobile Optimization
   ========================================================================== */
@media (max-width: 768px) {
  /* Ensure minimum font size for readability */
  html {
    font-size: 16px;
  }

  .help-text {
    font-size: 14px;
    line-height: var(--line-relaxed);
  }

  /* Larger touch targets */
  .checkbox input[type="checkbox"],
  .radio-card input[type="radio"] {
    width: 20px;
    height: 20px;
  }

  .tab {
    min-height: 44px;
    padding: var(--space-3) var(--space-4);
  }

  .btn {
    min-height: 44px;
    padding: var(--space-3) var(--space-5);
  }

  /* Stack methodology grid */
  .methodology-grid {
    grid-template-columns: 1fr;
  }

  .methodology-section--full {
    grid-column: 1;
  }

  /* Improve spacing on mobile */
  .container {
    padding: 0 var(--space-3);
  }

  .main {
    padding: var(--space-6) 0;
  }

  /* Responsive tables */
  .comparison-table {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .comparison-table table {
    min-width: 600px;
  }

  /* Stack cards vertically */
  .coefficient-cards {
    grid-template-columns: 1fr;
  }
}

/* Footer
   ========================================================================== */
.footer {
  background: var(--bg-surface);
  padding: var(--space-8) 0;
  margin-top: var(--space-12);
  box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.05);
}

.footer__version {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.footer__disclaimer {
  font-size: var(--text-sm);
  line-height: var(--line-relaxed);
  color: var(--color-text-muted);
}

.footer__disclaimer strong {
  color: var(--color-text);
}

/* Status Classes
   ========================================================================== */
.status--success {
  color: var(--color-success) !important;
}

.status--error {
  color: var(--color-error) !important;
}

/* Utilities
   ========================================================================== */
[hidden] {
  display: none !important;
}

.is-active {
  display: block;
}

/* Utility Classes - Clean Separation of Concerns
   ========================================================================== */

/* Header Notice Banner */
.header-notice {
  background: linear-gradient(135deg, rgba(21, 121, 115, 0.95) 0%, rgba(107, 87, 133, 0.95) 100%);
  color: white;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius);
  margin-bottom: var(--space-4);
  text-align: center;
  box-shadow: var(--shadow-md);
}

.header-notice__text {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.5;
}

/* Links */
.link--primary {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Text Utilities */
.text--success {
  color: var(--color-success);
}

.text--muted {
  color: var(--color-text-muted);
}

.text--primary {
  color: var(--color-primary);
}

.text--bold {
  font-weight: bold;
}

.text--semibold {
  font-weight: 600;
}

.text--heavy {
  font-weight: 700;
}

.text--small {
  font-size: var(--text-sm);
}

.text--875 {
  font-size: 0.875rem;
}

.text--xs {
  font-size: var(--text-xs);
}

.text--base {
  font-size: var(--text-base);
}

.text--normal-weight {
  font-weight: normal;
}

.text--opacity-70 {
  opacity: 0.7;
}

.text--opacity-80 {
  opacity: 0.8;
}

/* Line height */
.lh-15 {
  line-height: 1.5;
}

/* Display Utilities */
.hidden {
  display: none !important;
}

.block {
  display: block;
}

.inline-flex {
  display: inline-flex;
}

/* Activity Code Container */
.cae-container {
  margin-bottom: var(--space-5);
  padding: var(--space-4);
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-primary);
}

.cae-label {
  font-size: var(--text-base);
  margin-bottom: var(--space-2);
}

.cae-input-wrapper {
  position: relative;
}

.cae-input {
  margin-bottom: var(--space-2);
  padding-right: 2.5rem;
}

.cae-clear-btn {
  position: absolute;
  right: 0.5rem;
  top: 0.5rem;
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 1.2rem;
  padding: 0.25rem 0.5rem;
  display: none;
}

.cae-status {
  margin-bottom: var(--space-2);
  display: none;
  color: var(--color-success);
  font-weight: 600;
}

.cae-unlock-hint {
  display: none;
}

/* Winner/Success table styles */
.table-section-header--winner {
  font-weight: 700;
  color: var(--color-success);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 2px solid var(--color-border);
}

.table-indent-with-bg--winner {
  padding-left: var(--space-3);
  font-weight: 600;
  color: var(--color-success);
  background: var(--bg-elevated);
  padding-right: 0.5rem;
  margin-top: var(--space-2);
}

.table-subsection-header--winner {
  font-weight: 600;
  color: var(--color-success);
  background: var(--bg-elevated);
  padding-left: 0.5rem;
}

/* Warning/Alert styles */
.warning-box {
  margin-top: var(--space-3);
  background: #fff3cd;
  border-left: 4px solid #ff9800;
}

.warning-text {
  color: #856404;
}

.error-text {
  margin-top: var(--space-2);
  font-weight: 600;
  color: #d32f2f;
}

/* Code block */
.code-block {
  background: #f5f5f5;
  padding: var(--space-3);
  border-radius: var(--radius);
  font-family: monospace;
  font-size: 0.9rem;
}

/* Activity Manual Label */
.activity-manual-label {
  margin-bottom: var(--space-3);
  display: block;
}

/* Highlight Boxes */
.highlight-box {
  padding: var(--space-4);
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-primary);
}

.highlight-box--info {
  border-left-color: var(--color-info);
}

/* Disclaimer Box */
.disclaimer-box {
  margin-top: var(--space-3);
}

/* Checkbox with Inline Help */
.checkbox__help {
  margin-left: 2rem;
  margin-top: -0.5rem;
}

/* Navigation Footer */
.nav-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
}

.btn-with-icon {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.btn-icon {
  flex-shrink: 0;
}

/* Insurance Estimate Card */
.insurance-card {
  padding: var(--space-4);
  background: var(--bg-elevated);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-primary);
}

.insurance-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-3);
}

.insurance-amount {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
}

.insurance-percentage {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.insurance-risk {
  text-align: right;
}

.insurance-risk-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.insurance-based-on {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.insurance-details-section {
  margin-top: var(--space-3);
}

.insurance-override-section {
  display: none;
  margin-top: var(--space-3);
}

.insurance-form-group {
  margin-bottom: var(--space-3);
}

.insurance-label {
  font-size: var(--text-sm);
  display: block;
  margin-bottom: var(--space-2);
}

.insurance-input {
  font-size: var(--text-sm);
}

.insurance-checkbox-label {
  margin-bottom: var(--space-3);
}

.insurance-checkbox-text {
  font-size: var(--text-sm);
}

.insurance-warning {
  margin-top: var(--space-3);
}

/* Expense Breakdown */
.expense-breakdown {
  display: block;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  font-weight: normal;
}

.expense-warning {
  display: none;
}

.expense-error {
  display: none;
}

/* Spacing Utilities */
.mt-05 {
  margin-top: 0.5rem;
}

.mt-1 {
  margin-top: 1rem;
}

.mt-2 {
  margin-top: var(--space-2);
}

.mt-3 {
  margin-top: var(--space-3);
}

.mt-4 {
  margin-top: var(--space-4);
}

.mt-5 {
  margin-top: var(--space-5);
}

.mt-6 {
  margin-top: var(--space-6);
}

.mb-2 {
  margin-bottom: var(--space-2);
}

.mb-3 {
  margin-bottom: var(--space-3);
}

.mb-5 {
  margin-bottom: var(--space-5);
}

.ml-15 {
  margin-left: 1.5rem;
}

.mr-05 {
  margin-right: 0.5rem;
}

.pl-3 {
  padding-left: var(--space-3);
}

.pr-05 {
  padding-right: 0.5rem;
}

.pt-3 {
  padding-top: var(--space-3);
}

.pt-4 {
  padding-top: var(--space-4);
}

.pr-25 {
  padding-right: 2.5rem;
}

/* Details Summary */
.details-summary {
  font-size: var(--text-sm);
  cursor: pointer;
}

/* Table Cell Utilities */
.td-right-align {
  text-align: right;
}

.td-small-text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Results Ready Indicator */
#results-ready-indicator {
  display: none;
  color: var(--color-success);
  font-weight: bold;
}

/* Table Styling Classes */
.table-section-header {
  font-weight: 700;
  color: var(--color-primary);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 2px solid var(--color-border);
}

.table-subsection-header {
  font-weight: 600;
  background: var(--bg-elevated);
  padding-left: 0.5rem;
}

.table-indent {
  padding-left: var(--space-3);
}

.table-indent-with-bg {
  padding-left: var(--space-3);
  font-weight: 600;
  background: var(--bg-elevated);
  padding-right: 0.5rem;
}

/* Flex Utilities */
.flex {
  display: flex;
}

.flex-end {
  justify-content: flex-end;
}

.flex-between {
  justify-content: space-between;
}

.flex-center {
  align-items: center;
}

.gap-2 {
  gap: var(--space-2);
}

.gap-3 {
  gap: var(--space-3);
}

/* Border Utilities */
.border-top {
  border-top: 1px solid var(--color-border);
}

.border-top-2 {
  border-top: 2px solid var(--color-border);
}

/* Print Styles for PDF Export
   ========================================================================== */
@media print {
  /* Hide navigation and interactive elements */
  .tabs,
  .results-actions,
  .footer,
  .zero-state,
  .btn,
  details summary::before {
    display: none !important;
  }

  /* Show all tab content */
  .tab-content {
    display: block !important;
    page-break-inside: avoid;
  }

  .tab-content:not(:first-of-type) {
    page-break-before: always;
  }

  /* Ensure proper formatting */
  body {
    background: white;
    color: black;
  }

  .header {
    background: linear-gradient(135deg, #2DBFB8 0%, #9B87B5 100%);
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    color: white;
    page-break-after: avoid;
  }

  .summary-cards,
  .breakdown,
  .methodology-grid {
    page-break-inside: avoid;
  }

  .summary-card,
  .breakdown__col,
  .methodology-section {
    box-shadow: none;
    border: 1px solid #dee2e6;
  }

  .winner-banner {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    page-break-inside: avoid;
  }

  /* Expand all details elements */
  details {
    display: block;
  }

  details summary {
    display: none;
  }

  details > *:not(summary) {
    display: block !important;
  }

  /* Better table printing */
  table {
    page-break-inside: avoid;
  }

  /* Links */
  a[href]:after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }

  /* Adjust margins */
  @page {
    margin: 2cm;
  }

  .container {
    max-width: 100%;
  }
}