/**
 * Japan Tax Calculator - Styles
 * Mobile-first, accessible, thumb-friendly design
 */

/* CSS Variables for theming */
:root {
  --jtc-primary: #2563eb;
  --jtc-primary-hover: #1d4ed8;
  --jtc-primary-light: #dbeafe;
  --jtc-text: #1f2937;
  --jtc-text-light: #6b7280;
  --jtc-border: #e5e7eb;
  --jtc-bg: #ffffff;
  --jtc-bg-alt: #f9fafb;
  --jtc-success: #10b981;
  --jtc-warning: #f59e0b;
  --jtc-error: #ef4444;
  --jtc-info: #3b82f6;
  --jtc-radius: 8px;
  --jtc-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --jtc-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Dark theme variables */
.jtc-theme-dark {
  --jtc-primary: #3b82f6;
  --jtc-primary-hover: #2563eb;
  --jtc-primary-light: #1e3a8a;
  --jtc-text: #f3f4f6;
  --jtc-text-light: #9ca3af;
  --jtc-border: #374151;
  --jtc-bg: #1f2937;
  --jtc-bg-alt: #111827;
}

/* Base container */
.japan-tax-calculator {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--jtc-text);
  background-color: var(--jtc-bg);
  border-radius: var(--jtc-radius);
  box-shadow: var(--jtc-shadow-lg);
  max-width: 800px;
  margin: 0 auto;
  padding: 0;
  box-sizing: border-box;
}

.japan-tax-calculator *,
.japan-tax-calculator *::before,
.japan-tax-calculator *::after {
  box-sizing: border-box;
}

/* Compact mode */
.japan-tax-calculator.jtc-compact {
  max-width: 600px;
  font-size: 14px;
}

/* Loading state */
.jtc-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  text-align: center;
}

.jtc-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--jtc-border);
  border-top-color: var(--jtc-primary);
  border-radius: 50%;
  animation: jtc-spin 1s linear infinite;
}

@keyframes jtc-spin {
  to { transform: rotate(360deg); }
}

/* Wizard container */
.jtc-wizard {
  padding: 24px;
}

@media (min-width: 640px) {
  .jtc-wizard {
    padding: 32px;
  }
}

/* Progress bar */
.jtc-progress {
  margin-bottom: 32px;
}

.jtc-progress-bar {
  width: 100%;
  height: 8px;
  background-color: var(--jtc-border);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 16px;
}

.jtc-progress-fill {
  height: 100%;
  background-color: var(--jtc-primary);
  transition: width 0.3s ease;
}

.jtc-progress-steps {
  display: none; /* Hidden on mobile */
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

@media (min-width: 768px) {
  .jtc-progress-steps {
    display: grid;
  }
}

.jtc-progress-step {
  text-align: center;
}

.jtc-progress-step-number {
  width: 32px;
  height: 32px;
  margin: 0 auto 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: var(--jtc-border);
  color: var(--jtc-text-light);
  font-size: 14px;
  font-weight: 600;
}

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

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

.jtc-progress-step-label {
  font-size: 12px;
  color: var(--jtc-text-light);
}

.jtc-progress-step.active .jtc-progress-step-label {
  color: var(--jtc-text);
  font-weight: 500;
}

/* Step container */
.jtc-step {
  margin-bottom: 32px;
}

.jtc-step-title {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 8px 0;
  color: var(--jtc-text);
}

.jtc-step-description {
  font-size: 16px;
  color: var(--jtc-text-light);
  margin: 0 0 24px 0;
}

/* Form elements */
.jtc-form-group {
  margin-bottom: 24px;
}

.jtc-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--jtc-text);
  margin-bottom: 8px;
}

.jtc-input,
.jtc-select {
  width: 100%;
  padding: 12px 16px;
  font-size: 16px; /* Prevents zoom on iOS */
  border: 2px solid var(--jtc-border);
  border-radius: var(--jtc-radius);
  background-color: var(--jtc-bg);
  color: var(--jtc-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  appearance: none;
}

.jtc-input:focus,
.jtc-select:focus {
  outline: none;
  border-color: var(--jtc-primary);
  box-shadow: 0 0 0 3px var(--jtc-primary-light);
}

.jtc-input[readonly] {
  background-color: var(--jtc-bg-alt);
  cursor: not-allowed;
}

/* Input groups (prefix/suffix) */
.jtc-input-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.jtc-input-prefix,
.jtc-input-suffix {
  font-size: 14px;
  color: var(--jtc-text-light);
  white-space: nowrap;
}

.jtc-input-group .jtc-input {
  flex: 1;
}

/* Help text */
.jtc-help-text {
  display: block;
  font-size: 13px;
  color: var(--jtc-text-light);
  margin-top: 6px;
}

.jtc-note {
  font-size: 12px;
  color: var(--jtc-text-light);
  font-style: italic;
}

/* Radio buttons */
.jtc-radio-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.jtc-radio {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 14px;
  padding: 12px;
  border: 2px solid var(--jtc-border);
  border-radius: var(--jtc-radius);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.jtc-radio:hover {
  background-color: var(--jtc-bg-alt);
}

.jtc-radio input[type="radio"] {
  margin: 0;
  width: 20px;
  height: 20px;
  cursor: pointer;
}

.jtc-radio input[type="radio"]:checked {
  accent-color: var(--jtc-primary);
}

/* Toggle switches */
.jtc-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  user-select: none;
}

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

.jtc-toggle-slider {
  position: relative;
  width: 48px;
  height: 28px;
  background-color: var(--jtc-border);
  border-radius: 999px;
  transition: background-color 0.3s ease;
  flex-shrink: 0;
}

.jtc-toggle-slider::before {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  left: 3px;
  top: 3px;
  background-color: white;
  border-radius: 50%;
  transition: transform 0.3s ease;
}

.jtc-toggle input[type="checkbox"]:checked + .jtc-toggle-slider {
  background-color: var(--jtc-primary);
}

.jtc-toggle input[type="checkbox"]:checked + .jtc-toggle-slider::before {
  transform: translateX(20px);
}

.jtc-toggle-label {
  font-size: 14px;
  font-weight: 500;
}

/* Tooltip */
.jtc-tooltip {
  display: inline-block;
  width: 18px;
  height: 18px;
  line-height: 18px;
  text-align: center;
  background-color: var(--jtc-primary);
  color: white;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  cursor: help;
  margin-left: 4px;
}

.jtc-tooltip:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  background-color: var(--jtc-text);
  color: white;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 12px;
  white-space: normal;
  max-width: 200px;
  z-index: 1000;
  margin-top: 4px;
}

/* Buttons */
.jtc-btn {
  display: inline-block;
  padding: 14px 24px;
  font-size: 16px;
  font-weight: 600;
  text-align: center;
  border: none;
  border-radius: var(--jtc-radius);
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
  min-height: 48px; /* Thumb-friendly */
  touch-action: manipulation;
  user-select: none;
}

.jtc-btn:active {
  transform: scale(0.98);
}

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

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

.jtc-btn-primary:hover:not(:disabled) {
  background-color: var(--jtc-primary-hover);
}

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

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

.jtc-btn-remove {
  width: 32px;
  height: 32px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--jtc-error);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 20px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.jtc-btn-remove:hover {
  background-color: #dc2626;
}

/* Navigation */
.jtc-navigation {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--jtc-border);
}

.jtc-navigation .jtc-btn {
  flex: 1;
  max-width: 200px;
}

/* Dependent rows */
.jtc-dependent-row {
  padding: 20px;
  background-color: var(--jtc-bg-alt);
  border: 2px solid var(--jtc-border);
  border-radius: var(--jtc-radius);
  margin-bottom: 16px;
}

.jtc-dependent-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.jtc-dependent-header h4 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--jtc-text);
}

/* Alerts */
.jtc-alert {
  padding: 12px 16px;
  border-radius: var(--jtc-radius);
  margin-bottom: 16px;
  border-left: 4px solid;
}

.jtc-alert-info {
  background-color: #eff6ff;
  border-color: var(--jtc-info);
  color: #1e40af;
}

.jtc-alert-warning {
  background-color: #fffbeb;
  border-color: var(--jtc-warning);
  color: #92400e;
}

.jtc-alert-error {
  background-color: #fef2f2;
  border-color: var(--jtc-error);
  color: #991b1b;
}

.jtc-alert ul {
  margin: 8px 0 0 0;
  padding-left: 20px;
}

/* Results */
.jtc-results {
  /* Results-specific styles */
}

.jtc-disclaimer {
  padding: 16px;
  background-color: #fffbeb;
  border: 2px solid var(--jtc-warning);
  border-radius: var(--jtc-radius);
  margin-bottom: 24px;
  font-size: 14px;
  line-height: 1.6;
}

.jtc-warnings {
  margin-bottom: 24px;
}

.jtc-summary {
  margin-bottom: 32px;
}

.jtc-summary-card {
  text-align: center;
  padding: 32px;
  background: linear-gradient(135deg, var(--jtc-primary), var(--jtc-primary-hover));
  color: white;
  border-radius: var(--jtc-radius);
  margin-bottom: 20px;
}

.jtc-summary-label {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  opacity: 0.9;
  margin-bottom: 8px;
}

.jtc-summary-amount {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 4px;
}

@media (min-width: 640px) {
  .jtc-summary-amount {
    font-size: 56px;
  }
}

.jtc-summary-period {
  font-size: 16px;
  opacity: 0.9;
}

.jtc-summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

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

.jtc-summary-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px;
  background-color: var(--jtc-bg-alt);
  border-radius: var(--jtc-radius);
  border: 1px solid var(--jtc-border);
}

.jtc-summary-item-label {
  font-size: 14px;
  color: var(--jtc-text-light);
}

.jtc-summary-item-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--jtc-text);
}

/* Refund/Amount due */
.jtc-refund-status {
  text-align: center;
  padding: 24px;
  border-radius: var(--jtc-radius);
  margin-top: 20px;
}

.jtc-refund {
  background-color: #d1fae5;
  border: 2px solid var(--jtc-success);
}

.jtc-amount-due {
  background-color: #fee2e2;
  border: 2px solid var(--jtc-error);
}

.jtc-refund-label {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.jtc-refund-amount {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 4px;
}

.jtc-refund .jtc-refund-amount {
  color: var(--jtc-success);
}

.jtc-amount-due .jtc-refund-amount {
  color: var(--jtc-error);
}

.jtc-refund-note {
  font-size: 13px;
  color: var(--jtc-text-light);
}

/* Breakdown */
.jtc-breakdown {
  margin-bottom: 32px;
}

.jtc-breakdown h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 20px 0;
  color: var(--jtc-text);
}

.jtc-details {
  border: 1px solid var(--jtc-border);
  border-radius: var(--jtc-radius);
  margin-bottom: 16px;
  overflow: hidden;
}

.jtc-details summary {
  padding: 16px;
  background-color: var(--jtc-bg-alt);
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  list-style: none;
  user-select: none;
}

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

.jtc-details summary::before {
  content: '▶';
  display: inline-block;
  margin-right: 8px;
  transition: transform 0.2s ease;
}

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

.jtc-table {
  width: 100%;
  border-collapse: collapse;
}

.jtc-table tbody tr {
  border-top: 1px solid var(--jtc-border);
}

.jtc-table td {
  padding: 12px 16px;
  font-size: 14px;
}

.jtc-table td:first-child {
  color: var(--jtc-text);
}

.jtc-table td.jtc-amount {
  text-align: right;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.jtc-table td.jtc-negative {
  color: var(--jtc-error);
}

.jtc-table tr.jtc-total-row {
  background-color: var(--jtc-bg-alt);
  font-weight: 700;
}

.jtc-table tr.jtc-taxable-row {
  background-color: var(--jtc-primary-light);
  font-weight: 700;
}

/* Budget chart */
.jtc-budget-chart {
  margin-bottom: 32px;
}

.jtc-budget-chart h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 12px 0;
  color: var(--jtc-text);
}

.jtc-budget-visualization {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}

.jtc-budget-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background-color: var(--jtc-bg-alt);
  border-left: 4px solid var(--jtc-primary);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
}

.jtc-budget-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--percentage, 0%);
  background-color: var(--jtc-primary-light);
  opacity: 0.3;
  z-index: 0;
}

.jtc-budget-category,
.jtc-budget-percentage {
  position: relative;
  z-index: 1;
}

.jtc-budget-category {
  font-size: 14px;
  font-weight: 500;
}

.jtc-budget-percentage {
  font-size: 16px;
  font-weight: 700;
  color: var(--jtc-primary);
}

/* Actions */
.jtc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--jtc-border);
}

.jtc-actions .jtc-btn {
  flex: 1;
  min-width: 140px;
}

/* Utility classes */
.hidden {
  display: none !important;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print styles */
@media print {
  .jtc-navigation,
  .jtc-actions,
  .jtc-btn {
    display: none;
  }

  .japan-tax-calculator {
    box-shadow: none;
  }

  .jtc-details {
    border: 1px solid #000;
  }

  .jtc-details summary::before {
    display: none;
  }
}

/* Focus visible for keyboard navigation */
.jtc-btn:focus-visible,
.jtc-input:focus-visible,
.jtc-select:focus-visible {
  outline: 3px solid var(--jtc-primary);
  outline-offset: 2px;
}