/* PawStages — Dog Age Milestone Calendar */
:root {
  --color-bg: #FDF8F3;
  --color-surface: #FFFFFF;
  --color-surface-alt: #F5EDE4;
  --color-primary: #8B5E3C;
  --color-primary-dark: #6B4226;
  --color-primary-light: #D4A574;
  --color-accent: #E8845C;
  --color-accent-light: #F5C4A1;
  --color-text: #2C1810;
  --color-text-muted: #6B5A4E;
  --color-text-light: #9B8A7E;
  --color-border: #E0D4C8;
  --color-success: #4A8C6F;
  --color-error: #C0392B;
  --color-info: #5B8DB8;
  --shadow-sm: 0 1px 3px rgba(44, 24, 16, 0.08);
  --shadow-md: 0 4px 12px rgba(44, 24, 16, 0.1);
  --shadow-lg: 0 8px 30px rgba(44, 24, 16, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2rem;
  --font-size-2xl: 2.75rem;
  --font-size-3xl: 3.5rem;
  --transition: 0.2s ease;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover, a:focus {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

img, svg {
  max-width: 100%;
  height: auto;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
}
.skip-link:focus {
  top: 1rem;
}

/* Header */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
}
.logo:hover, .logo:focus {
  text-decoration: none;
  color: var(--color-primary);
}
.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}
.main-nav a {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.main-nav a:hover, .main-nav a:focus {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary-light);
  text-decoration: none;
}

/* Hero */
.hero {
  padding: 5rem 0 4rem;
  text-align: center;
  background: linear-gradient(180deg, var(--color-surface-alt) 0%, var(--color-bg) 100%);
}
.hero h1 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--color-text);
}
.hero-sub {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
  font-family: inherit;
}
.btn:hover, .btn:focus {
  text-decoration: none;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}
.btn-secondary {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover, .btn-secondary:focus {
  background: var(--color-primary);
  color: #fff;
}
.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-ghost:hover, .btn-ghost:focus {
  background: var(--color-surface-alt);
  color: var(--color-text);
  border-color: var(--color-text-light);
}
.btn-lg {
  padding: 0.875rem 2rem;
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
}
.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-xs);
}

/* Section headers */
.section-header {
  text-align: center;
  margin-bottom: 2.5rem;
}
.section-header h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.section-header p {
  color: var(--color-text-muted);
  font-size: var(--font-size-md);
}
.section-sub {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* Planner */
.planner-section {
  padding: 4rem 0;
}
.planner-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2.5rem;
  align-items: start;
}

.dog-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 1.5rem;
}
.form-group label,
.form-group legend {
  display: block;
  font-weight: 600;
  font-size: var(--font-size-sm);
  margin-bottom: 0.375rem;
  color: var(--color-text);
}
.form-group input[type="text"],
.form-group input[type="date"],
.form-group select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-base);
  font-family: inherit;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(139, 94, 60, 0.15);
}
.field-hint {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

.radio-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.radio-card {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  background: var(--color-bg);
}
.radio-card:hover {
  border-color: var(--color-primary-light);
}
.radio-card input[type="radio"] {
  margin-top: 0.2rem;
  accent-color: var(--color-primary);
}
.radio-card:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-surface-alt);
}
.radio-label {
  display: flex;
  flex-direction: column;
}
.radio-label strong {
  font-size: var(--font-size-sm);
}
.radio-label small {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Sidebar tips */
.planner-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.tip-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.tip-card h3 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-primary-dark);
}
.tip-card p, .tip-card li {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.tip-card ul {
  padding-left: 1.25rem;
  margin-top: 0.5rem;
}
.tip-card li {
  margin-bottom: 0.25rem;
}

/* Timeline */
.timeline-section {
  padding: 4rem 0;
  background: var(--color-surface-alt);
}
.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}
.timeline-header h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.timeline-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}
.timeline-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.milestone-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.milestone-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition), transform var(--transition);
}
.milestone-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.milestone-card.past {
  border-left: 4px solid var(--color-success);
}
.milestone-card.current {
  border-left: 4px solid var(--color-accent);
  background: linear-gradient(135deg, var(--color-surface) 0%, #FFF5EE 100%);
}
.milestone-card.upcoming {
  border-left: 4px solid var(--color-info);
}
.milestone-card.vet {
  border-left: 4px solid var(--color-primary-light);
}

.milestone-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}
.milestone-card h3 {
  font-size: var(--font-size-md);
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.milestone-date {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}
.milestone-age {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}
.milestone-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 1rem;
}
.milestone-status {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
  align-self: flex-start;
}
.milestone-status.past {
  background: #E8F5E9;
  color: var(--color-success);
}
.milestone-status.current {
  background: #FFF3E0;
  color: var(--color-accent);
}
.milestone-status.upcoming {
  background: #E3F2FD;
  color: var(--color-info);
}
.milestone-card .btn {
  align-self: flex-start;
}

/* Saved section */
.saved-section {
  padding: 4rem 0;
}
.saved-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}
.saved-dog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
}
.saved-dog-info h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
}
.saved-dog-info p {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}
.saved-dog-actions {
  display: flex;
  gap: 0.375rem;
  flex-shrink: 0;
}
.empty-text {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  grid-column: 1 / -1;
}

/* Guide section */
.guide-section {
  padding: 4rem 0;
  background: var(--color-surface-alt);
}
.guide-section h2 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: 2.5rem;
  letter-spacing: -0.02em;
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}
.guide-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}
.guide-block h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-primary-dark);
}
.guide-block p, .guide-block li {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}
.guide-block ul {
  padding-left: 1.25rem;
  margin-top: 0.5rem;
}
.guide-block li {
  margin-bottom: 0.375rem;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--color-text);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.toast[hidden] {
  display: block;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
}

/* Footer */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0 1.5rem;
  margin-top: auto;
}
.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
.footer-grid p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}
.footer-links {
  display: flex;
  list-style: none;
  gap: 1.25rem;
}
.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.footer-links a:hover {
  color: var(--color-primary);
}
.footer-note {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  text-align: center;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

/* Print styles */
@media print {
  .site-header, .site-footer, .planner-section, .saved-section, .guide-section, .hero, .timeline-actions, .milestone-card .btn {
    display: none !important;
  }
  .timeline-section {
    display: block !important;
    padding: 0;
    background: #fff;
  }
  .milestone-grid {
    grid-template-columns: 1fr;
  }
  .milestone-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
    margin-bottom: 1rem;
  }
  body {
    background: #fff;
    color: #000;
  }
}

@media print {
  .print-card {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #fff;
    z-index: 9999;
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
  }
  .print-card-content {
    text-align: center;
    max-width: 500px;
  }
  .print-card-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
  }
  .print-card-content .date {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 1rem;
  }
  .print-card-content .desc {
    font-size: 1rem;
    color: #444;
    line-height: 1.6;
  }
  .print-card-content .paw {
    font-size: 3rem;
    margin-bottom: 1rem;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .hero {
    padding: 3rem 0 2.5rem;
  }
  .hero h1 {
    font-size: var(--font-size-2xl);
  }
  .hero-sub {
    font-size: var(--font-size-base);
  }
  .planner-grid {
    grid-template-columns: 1fr;
  }
  .planner-sidebar {
    order: -1;
  }
  .radio-group {
    grid-template-columns: 1fr;
  }
  .timeline-header {
    flex-direction: column;
  }
  .timeline-actions {
    width: 100%;
  }
  .timeline-actions .btn {
    flex: 1;
  }
  .guide-grid {
    grid-template-columns: 1fr;
  }
  .main-nav ul {
    gap: 1rem;
  }
  .footer-grid {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  .dog-form {
    padding: 1.25rem;
  }
  .form-actions {
    flex-direction: column;
  }
  .form-actions .btn {
    width: 100%;
  }
  .milestone-grid {
    grid-template-columns: 1fr;
  }
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    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;
}