/* LetterCraft - Handwritten Letter Format Guide */
:root {
  --color-cream: #faf8f5;
  --color-parchment: #f5f0e8;
  --color-ink: #2c3e50;
  --color-ink-light: #4a6274;
  --color-burgundy: #8b3a3a;
  --color-burgundy-light: #a05252;
  --color-gold: #c4a265;
  --color-gold-light: #d4b87a;
  --color-sage: #6b8f71;
  --color-sage-light: #8fb394;
  --color-error: #c0392b;
  --color-success: #27ae60;
  --color-border: #d4c5b0;
  --color-border-light: #e8dfd3;
  --color-shadow: rgba(44, 62, 80, 0.08);
  --color-shadow-hover: rgba(44, 62, 80, 0.15);
  --font-body: Georgia, 'Times New Roman', serif;
  --font-heading: 'Palatino Linotype', Palatino, serif;
  --font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-ink);
  background-color: var(--color-cream);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--color-burgundy);
  color: white;
  padding: 8px 16px;
  border-radius: 0 0 var(--radius) var(--radius);
  z-index: 1000;
  font-family: var(--font-ui);
  font-size: 0.875rem;
  text-decoration: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  background: white;
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 3px var(--color-shadow);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-ink);
}

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

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 8px;
}

.main-nav a {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--color-ink-light);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.main-nav a:hover,
.main-nav a:focus {
  color: var(--color-burgundy);
  background: var(--color-parchment);
}

.main-nav a[aria-current="page"] {
  color: var(--color-burgundy);
  background: var(--color-parchment);
  font-weight: 600;
}

/* Hero */
.hero-section {
  background: linear-gradient(135deg, var(--color-parchment) 0%, var(--color-cream) 100%);
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--color-border-light);
}

.hero-content {
  max-width: 640px;
}

.hero-content h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.2;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-ink-light);
  line-height: 1.7;
}

/* Section styles */
.section-note {
  color: var(--color-ink-light);
  font-size: 0.9375rem;
  margin-bottom: 24px;
}

section h2 {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  color: var(--color-ink);
  margin-bottom: 8px;
}

/* Builder Section */
.builder-section {
  padding: 56px 0;
}

.builder-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.builder-controls h2 {
  margin-bottom: 4px;
}

/* Letter Type Cards */
.letter-type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 28px;
}

.type-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 12px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: white;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-ui);
  text-align: center;
}

.type-card:hover {
  border-color: var(--color-gold);
  box-shadow: 0 2px 8px var(--color-shadow);
}

.type-card:focus {
  outline: 2px solid var(--color-burgundy);
  outline-offset: 2px;
}

.type-card.active {
  border-color: var(--color-burgundy);
  background: #fdf5f5;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.type-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.type-name {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-ink);
}

.type-desc {
  font-size: 0.75rem;
  color: var(--color-ink-light);
}

/* Form */
.letter-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-ink);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.form-group input,
.form-group select {
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-ink);
  background: white;
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-burgundy);
  box-shadow: 0 0 0 3px rgba(139, 58, 58, 0.1);
}

.form-group input::placeholder {
  color: #a0a0a0;
  font-style: italic;
}

.tone-options {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.tone-option {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-ui);
  font-size: 0.875rem;
  cursor: pointer;
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  background: white;
  transition: all var(--transition);
}

.tone-option:hover {
  border-color: var(--color-gold);
}

.tone-option input[type="radio"] {
  accent-color: var(--color-burgundy);
}

.tone-option:has(input:checked) {
  border-color: var(--color-burgundy);
  background: #fdf5f5;
}

.form-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-burgundy-light);
  box-shadow: 0 2px 8px var(--color-shadow-hover);
}

.btn-secondary {
  background: white;
  color: var(--color-ink);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-parchment);
  border-color: var(--color-gold);
}

.btn-small {
  padding: 6px 14px;
  font-size: 0.8125rem;
  background: var(--color-parchment);
  color: var(--color-ink);
  border: 1px solid var(--color-border);
}

.btn-small:hover {
  background: var(--color-border-light);
}

/* Preview */
.builder-preview {
  position: sticky;
  top: 88px;
}

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

.preview-header h2 {
  font-size: 1.25rem;
  margin-bottom: 0;
}

.preview-actions {
  display: flex;
  gap: 8px;
}

.letter-preview {
  margin-bottom: 24px;
}

.letter-paper {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  min-height: 320px;
  box-shadow: 0 2px 12px var(--color-shadow);
  position: relative;
}

.letter-paper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 60px;
  width: 1px;
  height: 100%;
  background: #f0e0e0;
  opacity: 0.5;
}

.letter-placeholder {
  color: #a0a0a0;
  font-style: italic;
  text-align: center;
  padding: 64px 0;
}

.letter-output {
  font-family: var(--font-body);
  line-height: 1.8;
  white-space: pre-wrap;
  color: var(--color-ink);
}

.letter-output .date {
  text-align: right;
  margin-bottom: 24px;
  color: var(--color-ink-light);
}

.letter-output .salutation {
  margin-bottom: 16px;
}

.letter-output .body-text {
  margin-bottom: 16px;
  text-indent: 2em;
}

.letter-output .body-text:first-of-type {
  text-indent: 0;
}

.letter-output .closing {
  margin-top: 24px;
  margin-bottom: 40px;
}

.letter-output .signature {
  font-style: italic;
  color: var(--color-ink-light);
}

/* Envelope Preview */
.envelope-preview {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 1px 6px var(--color-shadow);
}

.envelope-preview h3 {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-ink-light);
  margin-bottom: 16px;
}

.envelope-visual {
  background: var(--color-parchment);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  aspect-ratio: 2.2;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.envelope-stamp-area {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 48px;
  height: 56px;
  border: 1px dashed var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stamp-label {
  font-family: var(--font-ui);
  font-size: 0.625rem;
  color: var(--color-ink-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.envelope-address-area {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px 16px 16px;
}

.envelope-address {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  line-height: 1.6;
  text-align: center;
  color: var(--color-ink);
}

.envelope-return-area {
  padding-left: 12px;
}

.return-address {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--color-ink-light);
  line-height: 1.5;
}

/* Reference Section */
.reference-section {
  padding: 56px 0;
  background: var(--color-parchment);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.reference-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 32px;
}

.reference-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 1px 6px var(--color-shadow);
}

.reference-card h3 {
  font-family: var(--font-ui);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-gold);
}

.reference-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-ui);
  font-size: 0.875rem;
}

.reference-table th {
  text-align: left;
  padding: 8px 12px;
  background: var(--color-parchment);
  font-weight: 600;
  color: var(--color-ink);
  border-bottom: 1px solid var(--color-border);
}

.reference-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-ink-light);
}

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

.reference-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.reference-list li {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--color-ink-light);
  padding-left: 20px;
  position: relative;
  line-height: 1.6;
}

.reference-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--color-gold);
  border-radius: 50%;
}

/* Examples Section */
.examples-section {
  padding: 56px 0;
}

.mistakes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 32px 0 40px;
}

.mistake-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 1px 6px var(--color-shadow);
  transition: box-shadow var(--transition);
}

.mistake-card:hover {
  box-shadow: 0 4px 16px var(--color-shadow-hover);
}

.mistake-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.mistake-card h3 {
  font-family: var(--font-ui);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 8px;
}

.mistake-card p {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: var(--color-ink-light);
  line-height: 1.6;
}

.scenario-walkthrough {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: 0 1px 6px var(--color-shadow);
}

.scenario-walkthrough h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.scenario-walkthrough p {
  color: var(--color-ink-light);
  margin-bottom: 16px;
  line-height: 1.7;
}

.scenario-walkthrough ol {
  padding-left: 24px;
  margin-bottom: 16px;
}

.scenario-walkthrough li {
  color: var(--color-ink-light);
  margin-bottom: 8px;
  line-height: 1.7;
}

/* Why Section */
.why-section {
  padding: 56px 0;
  background: linear-gradient(135deg, var(--color-ink) 0%, #1a2a3a 100%);
  color: white;
}

.why-content h2 {
  color: white;
  margin-bottom: 20px;
}

.why-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: 16px;
  max-width: 680px;
}

.why-stats {
  display: flex;
  gap: 40px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-gold-light);
  line-height: 1;
}

.stat-label {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Footer */
.site-footer {
  background: var(--color-ink);
  color: rgba(255, 255, 255, 0.7);
  padding: 40px 0 24px;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  margin-bottom: 24px;
}

.footer-logo {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: white;
}

.footer-tagline {
  font-family: var(--font-ui);
  font-size: 0.8125rem;
  margin-top: 4px;
}

.footer-tagline a {
  color: var(--color-gold-light);
  text-decoration: none;
}

.footer-tagline a:hover {
  text-decoration: underline;
}

.footer-nav ul {
  display: flex;
  list-style: none;
  gap: 20px;
}

.footer-nav a {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: white;
}

.footer-note {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Print styles */
@media print {
  .site-header,
  .site-footer,
  .builder-controls,
  .preview-actions,
  .hero-section,
  .why-section,
  .reference-section,
  .examples-section {
    display: none !important;
  }

  .builder-section {
    padding: 0;
  }

  .builder-layout {
    display: block;
  }

  .letter-paper {
    box-shadow: none;
    border: none;
    padding: 40px;
  }

  .letter-paper::before {
    display: none;
  }

  .envelope-preview {
    page-break-before: always;
  }
}

/* Responsive */
@media (max-width: 1024px) {
  .builder-layout {
    grid-template-columns: 1fr;
  }

  .builder-preview {
    position: static;
  }

  .reference-grid {
    grid-template-columns: 1fr;
  }

  .mistakes-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    flex-direction: column;
    height: auto;
    padding: 12px 0;
    gap: 8px;
  }

  .main-nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-section {
    padding: 40px 0 32px;
  }

  .letter-type-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .mistakes-grid {
    grid-template-columns: 1fr;
  }

  .why-stats {
    gap: 24px;
  }

  .stat-number {
    font-size: 2rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer-nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .letter-type-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .type-card {
    padding: 12px 8px;
  }

  .tone-options {
    flex-direction: column;
    gap: 8px;
  }

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

  .preview-header {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .letter-paper {
    padding: 20px;
  }
}

/* Focus visible for accessibility */
*:focus-visible {
  outline: 2px solid var(--color-burgundy);
  outline-offset: 2px;
}

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

  html {
    scroll-behavior: auto;
  }
}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}