/* ===== Design Tokens ===== */
:root {
  /* Colors - from spec */
  --color-primary: #1E3A5F;
  --color-primary-dark: #162d4a;
  --color-accent: #FFC107;
  --color-accent-dark: #e6ac00;
  --color-background: #F8F9FA;
  --color-surface: #FFFFFF;
  --color-text: #212529;
  --color-text-muted: #6C757D;
  --color-border: #DEE2E6;
  --color-error: #DC3545;
  --color-success: #198754;
  --color-info: #005EB8;

  /* Typography */
  --font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --line-height-base: 1.5;
  --line-height-tight: 1.25;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Layout */
  --max-width: 680px;
  --border-radius: 8px;
  --border-radius-lg: 12px;

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

  /* Focus */
  --focus-ring: 0 0 0 3px rgba(30, 58, 95, 0.4);
  --focus-ring-error: 0 0 0 3px rgba(220, 53, 69, 0.4);
}

/* ===== CSS Reset ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

/* ===== Accessibility ===== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--space-sm) var(--space-md);
  z-index: 100;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* Focus styles */
:focus {
  outline: none;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

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

/* ===== Layout ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

/* ===== Header ===== */
.site-header {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) 0;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-primary);
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ===== Footer ===== */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0;
  margin-top: auto;
}

.footer-content {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.footer-content p {
  margin-bottom: var(--space-sm);
}

.footer-content a {
  color: var(--color-primary);
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* ===== Typography ===== */
h1 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover {
  color: var(--color-primary-dark);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 44px;
}

.btn:focus-visible {
  box-shadow: var(--focus-ring);
}

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

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
  min-height: 52px;
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ===== Cards ===== */
.card {
  background-color: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.card-accent {
  border-left: 4px solid var(--color-accent);
}

/* ===== Hero Section ===== */
.hero {
  text-align: center;
  padding: var(--space-3xl) 0;
}

.hero h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto var(--space-xl);
}

.hero .btn {
  margin-top: var(--space-md);
}

/* ===== Feature List ===== */
.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  position: relative;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 8px;
  height: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

/* ===== Info Box ===== */
.info-box {
  background-color: #e7f3ff;
  border: 1px solid var(--color-info);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  margin: var(--space-lg) 0;
}

.info-box-title {
  font-weight: 600;
  color: var(--color-info);
  margin-bottom: var(--space-xs);
}

.privacy-notice {
  background-color: #e8f5e9;
  border: 1px solid var(--color-success);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  margin: var(--space-lg) 0;
}

/* ===== Progress Steps ===== */
.progress-container {
  margin-bottom: var(--space-xl);
}

.progress-steps {
  display: flex;
  list-style: none;
  padding: 0;
  gap: var(--space-xs);
  counter-reset: step;
}

.progress-steps li {
  flex: 1;
  position: relative;
  text-align: center;
  padding: var(--space-sm) var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  border-bottom: 3px solid var(--color-border);
}

.progress-steps li::before {
  counter-increment: step;
  content: counter(step);
  display: block;
  width: 28px;
  height: 28px;
  margin: 0 auto var(--space-xs);
  line-height: 28px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  background-color: var(--color-border);
  color: var(--color-text-muted);
  border-radius: 50%;
}

.progress-steps .step-complete {
  color: var(--color-text);
  border-bottom-color: var(--color-success);
}

.progress-steps .step-complete::before {
  background-color: var(--color-success);
  color: white;
  content: "\2713";
}

.progress-steps .step-current {
  color: var(--color-primary);
  font-weight: 600;
  border-bottom-color: var(--color-primary);
}

.progress-steps .step-current::before {
  background-color: var(--color-primary);
  color: white;
}

.progress-steps .step-label {
  display: none;
}

@media (min-width: 600px) {
  .progress-steps .step-label {
    display: block;
  }
}

/* ===== Form Styles ===== */
.form-step {
  display: none;
}

.form-step.active,
.form-step[aria-hidden="false"] {
  display: block;
}

.form-step-header {
  margin-bottom: var(--space-xl);
}

.form-step-header p {
  color: var(--color-text-muted);
}

fieldset {
  border: none;
  padding: 0;
  margin: 0 0 var(--space-xl) 0;
}

legend {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  width: 100%;
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

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

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

.label-required::after {
  content: " *";
  color: var(--color-error);
}

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

input[type="text"],
input[type="email"],
input[type="date"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color 0.2s, box-shadow 0.2s;
  min-height: 44px;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

input[aria-invalid="true"],
select[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: var(--color-error);
}

input[aria-invalid="true"]:focus,
select[aria-invalid="true"]:focus,
textarea[aria-invalid="true"]:focus {
  box-shadow: var(--focus-ring-error);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236C757D' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: var(--space-2xl);
}

.error-message {
  display: block;
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
  min-height: 1.25rem;
}

.error-message:empty {
  display: none;
}

/* Radio and Checkbox groups */
.radio-group,
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.radio-option,
.checkbox-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm);
  border-radius: var(--border-radius);
  cursor: pointer;
}

.radio-option:hover,
.checkbox-option:hover {
  background-color: var(--color-background);
}

.radio-option input,
.checkbox-option input {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  flex-shrink: 0;
}

.radio-option label,
.checkbox-option label {
  margin-bottom: 0;
  cursor: pointer;
}

/* Multi-select checkboxes */
.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-sm);
}

/* Conditional fields */
.conditional-field {
  display: none;
  margin-top: var(--space-md);
  padding-left: var(--space-lg);
  border-left: 3px solid var(--color-border);
}

.conditional-field.visible {
  display: block;
}

/* ===== Form Navigation ===== */
.form-navigation {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.form-navigation .btn-prev {
  margin-right: auto;
}

.form-navigation .btn-next,
.form-navigation .btn-submit {
  margin-left: auto;
}

/* ===== Autosave Indicator ===== */
.autosave-status {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-md);
}

.autosave-status.saving {
  color: var(--color-info);
}

.autosave-status.saved {
  color: var(--color-success);
}

/* ===== Review Section ===== */
.review-section {
  margin-bottom: var(--space-xl);
}

.review-section h3 {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-md);
}

.review-section .edit-link {
  font-size: var(--font-size-sm);
  font-weight: normal;
}

.review-item {
  display: flex;
  flex-direction: column;
  margin-bottom: var(--space-sm);
}

.review-item dt {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.review-item dd {
  font-weight: 500;
}

/* ===== Output Section ===== */
.output-section {
  background-color: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  margin-top: var(--space-xl);
}

.output-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

@media (min-width: 480px) {
  .output-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .output-actions .btn {
    flex: 1;
    min-width: 200px;
  }
}

.output-preview {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  font-family: monospace;
  font-size: var(--font-size-sm);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 400px;
  overflow-y: auto;
}

.output-instructions {
  background-color: #fff9e6;
  border: 1px solid var(--color-accent);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  margin-top: var(--space-lg);
}

.output-instructions h4 {
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.output-instructions ol {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-sm);
}

/* ===== Dialog ===== */
.dialog-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-md);
}

.dialog {
  background-color: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-lg);
}

.dialog h2 {
  margin-bottom: var(--space-md);
}

.dialog-buttons {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.dialog-buttons .btn {
  flex: 1;
}

/* ===== Toast Notifications ===== */
.toast {
  position: fixed;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-text);
  color: white;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  z-index: 1001;
  animation: slideUp 0.3s ease;
}

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

.toast.error {
  background-color: var(--color-error);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
  :root {
    --font-size-2xl: 1.75rem;
    --font-size-3xl: 2rem;
  }

  .hero {
    padding: var(--space-xl) 0;
  }

  .form-navigation {
    flex-direction: column;
  }

  .form-navigation .btn {
    width: 100%;
  }

  .form-navigation .btn-prev {
    order: 2;
  }

  .form-navigation .btn-next,
  .form-navigation .btn-submit {
    order: 1;
  }
}

/* ===== Print Styles ===== */
@media print {
  .site-header,
  .site-footer,
  .form-navigation,
  .output-actions,
  .btn {
    display: none !important;
  }

  body {
    background: white;
  }

  .output-preview {
    max-height: none;
    border: none;
    padding: 0;
  }
}