/* ============================================
   TAX CHECK MALAYSIA - STYLES
   Mobile-first, modern, clean design
   ============================================ */

/* CSS Variables for theming */
:root {
  /* Colors - Light Mode */
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-primary: #0f766e;
  --color-primary-dark: #115e59;
  --color-primary-light: #14b8a6;
  --color-secondary: #64748b;
  --color-accent: #0891b2;
  --color-text: #1e293b;
  --color-text-secondary: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  
  /* Semantic Colors */
  --color-success: #10b981;
  --color-success-bg: #d1fae5;
  --color-warning: #f59e0b;
  --color-warning-bg: #fef3c7;
  --color-info: #3b82f6;
  --color-info-bg: #dbeafe;
  --color-error: #ef4444;
  --color-error-bg: #fee2e2;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  /* Spacing */
  --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;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* Header height */
  --header-height: 4rem;
  --header-height-mobile: 3.5rem;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f172a;
    --color-surface: #1e293b;
    --color-surface-elevated: #334155;
    --color-primary: #14b8a6;
    --color-primary-dark: #5eead4;
    --color-primary-light: #0f766e;
    --color-secondary: #94a3b8;
    --color-accent: #22d3ee;
    --color-text: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-border: #334155;
    --color-border-light: #1e293b;
    
    --color-success-bg: rgba(16, 185, 129, 0.2);
    --color-warning-bg: rgba(245, 158, 11, 0.2);
    --color-info-bg: rgba(59, 130, 246, 0.2);
    --color-error-bg: rgba(239, 68, 68, 0.2);
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.4);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.5);
  }
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 500;
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Container */
.container {
  width: 100%;
  max-width: 640px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding: 0 var(--space-6);
  }
}

/* ============================================
   PROGRESS HEADER
   ============================================ */
.progress-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  backdrop-filter: blur(8px);
  background-color: rgba(var(--color-surface), 0.95);
}

.progress-header .container {
  display: flex;
  flex-direction: column;
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.logo-icon {
  font-size: var(--font-size-xl);
}

.logo-text {
  font-weight: 700;
  font-size: var(--font-size-base);
  color: var(--color-primary);
}

/* Progress Steps */
.progress-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
}

.step-indicator {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  opacity: 0.5;
  transition: opacity var(--transition);
}

.step-indicator.active {
  opacity: 1;
}

.step-indicator.completed {
  opacity: 0.8;
}

.step-indicator.completed .step-number {
  background: var(--color-success);
  color: white;
}

.step-number {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--color-border);
  color: var(--color-text-secondary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-indicator.active .step-number {
  background: var(--color-primary);
  color: white;
}

.step-label {
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-text-secondary);
  display: none;
}

.step-indicator.active .step-label {
  color: var(--color-primary);
}

.step-connector {
  width: 1rem;
  height: 2px;
  background: var(--color-border);
  flex-shrink: 0;
}

@media (min-width: 480px) {
  .progress-header .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
    padding-top: 0;
    padding-bottom: 0;
  }
  
  .logo {
    margin-bottom: 0;
  }
  
  .step-label {
    display: inline;
  }
  
  .step-connector {
    width: 1.5rem;
  }
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
  padding-top: calc(var(--header-height-mobile) + var(--space-6));
  padding-bottom: var(--space-12);
}

@media (min-width: 480px) {
  .main-content {
    padding-top: calc(var(--header-height) + var(--space-8));
  }
}

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: none;
  animation: fadeIn 0.3s ease;
}

.card.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.card-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border-light);
  text-align: center;
}

.welcome-emoji {
  font-size: 3rem;
  margin-bottom: var(--space-4);
}

.card-header h1,
.card-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: 1.3;
}

.card-header .subtitle {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
}

.section-badge {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-badge--success {
  background: var(--color-success);
}

.card-body {
  padding: var(--space-6);
}

.card-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--color-border-light);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card-footer--split {
  flex-direction: row;
  justify-content: space-between;
}

.card-footer--stacked {
  flex-direction: column-reverse;
}

@media (min-width: 480px) {
  .card-footer--stacked {
    flex-direction: row;
    justify-content: center;
    gap: var(--space-4);
  }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: inherit;
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 3rem;
  touch-action: manipulation;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--color-surface-elevated);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--color-border-light);
  color: var(--color-text);
}

.btn-large {
  width: 100%;
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-arrow {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

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

.form-group--optional {
  opacity: 0.9;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.label-optional {
  font-weight: 400;
  color: var(--color-text-muted);
  margin-left: var(--space-2);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 3rem;
}

.form-input:hover,
.form-select:hover {
  border-color: var(--color-primary-light);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.1);
}

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

/* Input with prefix */
.input-prefix {
  position: relative;
  display: flex;
  align-items: center;
}

.input-prefix .prefix {
  position: absolute;
  left: var(--space-4);
  font-weight: 600;
  color: var(--color-text-secondary);
  pointer-events: none;
}

.input-prefix .form-input {
  padding-left: 3rem;
}

.form-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

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

.radio-card {
  display: flex;
  align-items: center;
  padding: var(--space-4);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.radio-card:hover {
  border-color: var(--color-primary-light);
}

.radio-card input[type="radio"] {
  width: 1.25rem;
  height: 1.25rem;
  margin-right: var(--space-3);
  accent-color: var(--color-primary);
  flex-shrink: 0;
}

.radio-card:has(input[type="radio"]:checked) {
  border-color: var(--color-primary);
  background: rgba(15, 118, 110, 0.05);
}

.radio-content {
  display: flex;
  flex-direction: column;
}

.radio-title {
  font-weight: 600;
  color: var(--color-text);
}

.radio-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ============================================
   INTRO SECTION
   ============================================ */
.intro-points {
  margin-bottom: var(--space-6);
}

.intro-point {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.intro-point:last-child {
  border-bottom: none;
}

.point-icon {
  width: 1.5rem;
  height: 1.5rem;
  background: var(--color-success-bg);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 700;
  flex-shrink: 0;
}

.intro-point p {
  color: var(--color-text);
  font-size: var(--font-size-base);
}

.who-for {
  background: var(--color-border-light);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-top: var(--space-6);
}

.who-for h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.who-for ul {
  list-style: none;
  padding: 0;
}

.who-for li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.who-for li::before {
  content: "•";
  position: absolute;
  left: var(--space-2);
  color: var(--color-primary);
  font-weight: bold;
}

/* ============================================
   INFO & WARNING BOXES
   ============================================ */
.info-box,
.warning-box {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
}

.info-box {
  background: var(--color-info-bg);
  border: 1px solid var(--color-info);
}

.info-box--calm {
  background: var(--color-border-light);
  border: 1px solid var(--color-border);
}

.warning-box {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning);
  margin-top: var(--space-3);
}

.info-box strong,
.warning-box strong {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.info-box p,
.warning-box p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

.info-box a {
  color: var(--color-primary);
  text-decoration: underline;
}

.hidden {
  display: none !important;
}

/* ============================================
   INCOME SECTION
   ============================================ */
.income-summary {
  background: var(--color-border-light);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-top: var(--space-6);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-base);
}

.summary-amount {
  font-weight: 700;
  color: var(--color-primary);
  font-size: var(--font-size-lg);
}

/* ============================================
   RELIEFS SECTION
   ============================================ */
.relief-item {
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border-light);
}

.relief-item:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
}

.relief-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--space-2);
  flex-wrap: wrap;
  gap: var(--space-2);
}

.relief-label {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.relief-cap {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  background: var(--color-border-light);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.relief-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}

.relief-total-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--color-primary);
  color: white;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-top: var(--space-6);
}

.relief-total-label {
  font-weight: 500;
  font-size: var(--font-size-base);
}

.relief-total-amount {
  font-weight: 700;
  font-size: var(--font-size-xl);
}

/* ============================================
   RESULTS SECTION
   ============================================ */
.results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.result-card {
  background: var(--color-border-light);
  padding: var(--space-4) var(--space-3);
  border-radius: var(--radius-lg);
  text-align: center;
}

.result-card--income {
  background: var(--color-info-bg);
}

.result-card--relief {
  background: var(--color-success-bg);
}

.result-card--chargeable {
  background: var(--color-warning-bg);
}

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

.result-value {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
}

@media (min-width: 480px) {
  .result-value {
    font-size: var(--font-size-lg);
  }
}

/* Tax Bracket Box */
.tax-bracket-box {
  background: var(--color-surface-elevated);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
}

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

.bracket-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.bracket-value {
  font-weight: 700;
  color: var(--color-primary);
  font-size: var(--font-size-lg);
}

.bracket-bar-container {
  height: 0.5rem;
  background: var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: var(--space-3);
}

.bracket-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary));
  border-radius: var(--radius);
  transition: width 0.5s ease;
}

.bracket-description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-align: center;
}

/* Tax Calculation */
.tax-calculation {
  background: var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}

.tax-calculation h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text);
}

.calc-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.calc-row span:first-child {
  display: flex;
  flex-direction: column;
}

.calc-row small {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.calc-row--highlight {
  color: var(--color-success);
  font-weight: 500;
}

.calc-row--total {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  padding: var(--space-3) 0;
  margin-top: var(--space-2);
  border-top: 1px dashed var(--color-border);
}

.calc-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-3) 0;
}

.calc-row--balance {
  font-size: var(--font-size-base);
  font-weight: 600;
  padding: var(--space-3) 0;
  border-top: 2px solid var(--color-border);
}

.calc-row--balance.positive {
  color: var(--color-error);
}

.calc-row--balance.negative {
  color: var(--color-success);
}

/* Smart Suggestions */
.smart-suggestions {
  margin-bottom: var(--space-6);
}

.suggestion-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-info-bg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
}

.suggestion-item.suggestion--warning {
  background: var(--color-warning-bg);
}

.suggestion-item.suggestion--success {
  background: var(--color-success-bg);
}

.suggestion-icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.suggestion-content h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}

.suggestion-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* Recommendation Box */
.recommendation-box {
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
  text-align: center;
}

.recommendation-box.rec--no-file {
  background: var(--color-success-bg);
  border: 1px solid var(--color-success);
}

.recommendation-box.rec--file-low {
  background: var(--color-info-bg);
  border: 1px solid var(--color-info);
}

.recommendation-box.rec--file-mid {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning);
}

.recommendation-box.rec--file-high {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error);
}

.recommendation-status {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--space-2);
}

.recommendation-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.recommendation-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
}

/* Reminders */
.reminders-box {
  background: var(--color-border-light);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
}

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

.reminders-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.reminders-box li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.reminders-box li::before {
  content: "✓";
  position: absolute;
  left: var(--space-1);
  color: var(--color-success);
  font-weight: bold;
}

/* Next Steps */
.next-steps {
  margin-bottom: var(--space-4);
}

.next-steps h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--color-text);
  text-align: center;
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.action-btn {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
}

.action-btn:hover {
  border-color: var(--color-primary);
  background: rgba(15, 118, 110, 0.05);
}

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

.action-btn--primary:hover {
  background: var(--color-primary-dark);
}

.action-icon {
  font-size: var(--font-size-2xl);
}

.action-text {
  display: flex;
  flex-direction: column;
}

.action-text strong {
  font-weight: 600;
  font-size: var(--font-size-base);
}

.action-text small {
  font-size: var(--font-size-xs);
  opacity: 0.8;
}

@media (min-width: 480px) {
  .action-buttons {
    flex-direction: row;
    flex-wrap: wrap;
  }
  
  .action-btn {
    flex: 1;
    min-width: 200px;
  }
}

/* ============================================
   DISCLAIMER
   ============================================ */
.disclaimer {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-border-light);
  border-radius: var(--radius-lg);
  margin-top: var(--space-8);
}

.disclaimer-icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.disclaimer p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
  text-align: center;
}

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

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

.mb-4 {
  margin-bottom: var(--space-4);
}


/* ============================================
   NEW TRUST & CLARITY IMPROVEMENTS
   ============================================ */

/* SECTION 1: Top Banner */
.top-banner {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.banner-content {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  flex: 1;
}

.banner-icon {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

.banner-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin: 0;
  line-height: 1.5;
}

.banner-dismiss {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 0;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color var(--transition-fast);
}

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

.top-banner.hidden {
  display: none;
}

/* SECTION 2 & 3: Collapsible Cards */
.collapsible-card {
  display: none;
  margin-bottom: var(--space-4);
  overflow: hidden;
}

/* Only show collapsible cards when intro section is active */
#intro-section.active ~ .collapsible-card,
#intro-section.active + .collapsible-card {
  display: block;
}

/* Alternative: show collapsible cards by default, hide when other sections active */
.section-card.active ~ .collapsible-card {
  display: none;
}

#intro-section.active ~ .collapsible-card {
  display: block;
}

/* Add spacing after intro section when it's active */
#intro-section.active {
  margin-bottom: var(--space-4);
}

.collapsible-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-size: var(--font-size-base);
  text-align: left;
  transition: background var(--transition-fast);
}

.collapsible-header:hover {
  background: var(--color-border-light);
}

.collapsible-icon {
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.collapsible-title {
  flex: 1;
  font-weight: 600;
  color: var(--color-text);
}

.collapsible-arrow {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: transform var(--transition-fast);
}

.collapsible-card.open .collapsible-arrow {
  transform: rotate(180deg);
}

.collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.collapsible-card.open .collapsible-content {
  max-height: 1000px;
}

/* How It Works Section */
.how-it-works {
  padding: 0 var(--space-5) var(--space-5);
}

.how-intro {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.step-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.step-num {
  width: 1.75rem;
  height: 1.75rem;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 600;
  flex-shrink: 0;
}

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

.step-text strong {
  font-weight: 600;
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

.step-text span {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Based On Section */
.based-on {
  padding: 0 var(--space-5) var(--space-5);
}

.based-on-section {
  margin-bottom: var(--space-4);
}

.based-on-section h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.based-on-section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.based-on-section li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.based-on-section li::before {
  content: "•";
  position: absolute;
  left: var(--space-2);
  color: var(--color-primary);
  font-weight: bold;
}

.based-on--not li::before {
  content: "✕";
  color: var(--color-error);
  font-size: var(--font-size-xs);
}

.tax-year-display {
  margin-top: var(--space-4);
  text-align: center;
}

.year-badge {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius);
}

/* Simple Formula */
.simple-formula {
  padding: 0 var(--space-5) var(--space-5);
}

.formula-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px dashed var(--color-border);
}

.formula-row:last-child {
  border-bottom: none;
}

.formula-label {
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  min-width: 8rem;
}

.formula-equals {
  color: var(--color-text-muted);
  font-weight: 500;
}

.formula-value {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  flex: 1;
}

/* SECTION 10: Supported Scope Box */
.scope-card {
  display: none;
  margin-bottom: var(--space-4);
  padding: var(--space-5);
}

/* Show scope card only when intro is active */
#intro-section.active ~ .scope-card {
  display: block;
}

.scope-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.scope-header h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.scope-icon {
  width: 1.5rem;
  height: 1.5rem;
  background: var(--color-success);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  font-weight: 700;
}

.scope-icon--not {
  background: var(--color-error);
}

.scope-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-4) 0;
}

.scope-list li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.scope-list li::before {
  content: "✓";
  position: absolute;
  left: var(--space-1);
  color: var(--color-success);
  font-weight: bold;
}

.scope-list--not-supported li::before {
  content: "✕";
  color: var(--color-error);
}

.scope-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-4) 0;
}

/* SECTION 5: Enhanced Result Breakdown */
.result-breakdown-card {
  background: var(--color-surface-elevated);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-6);
}

.breakdown-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.breakdown-rows {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.breakdown-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-base);
}

.breakdown-label {
  color: var(--color-text-secondary);
}

.breakdown-value {
  font-weight: 600;
  color: var(--color-text);
}

.breakdown-row--highlight {
  padding-top: var(--space-3);
  border-top: 2px solid var(--color-border);
  margin-top: var(--space-1);
}

.breakdown-row--highlight .breakdown-label {
  font-weight: 600;
  color: var(--color-text);
}

.breakdown-row--highlight .breakdown-value {
  color: var(--color-primary);
  font-size: var(--font-size-lg);
}

/* SECTION 6: Explain My Result */
.explain-result-card {
  margin-bottom: var(--space-6);
}

.btn-full {
  width: 100%;
}

.explain-content {
  background: var(--color-info-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-top: var(--space-4);
  animation: fadeIn 0.3s ease;
}

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

.explain-content ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.explain-content li {
  position: relative;
  padding-left: var(--space-5);
  margin-bottom: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.explain-content li::before {
  content: "💡";
  position: absolute;
  left: 0;
}

/* SECTION 8: Result Disclaimer */
.result-disclaimer {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
}

.result-disclaimer p {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  margin: 0;
  line-height: 1.6;
}

/* SECTION 9: Enhanced Footer Disclaimer */
.disclaimer-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.disclaimer-affiliation {
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  font-weight: 500;
}