/* CSS Variables for theming */
:root {
  /* Color Palette */
  --primary-color: #3C2415;
  --secondary-color: #6F4E37;
  --accent-color: #A67B5B;
  --light-accent: #C4915C;
  --background-color: #E6D5AA;
  
  /* Dark theme colors */
  --dark-primary: #2A1A0F;
  --dark-secondary: #4A3225;
  --dark-accent: #7A5A3F;
  --dark-light-accent: #9A6F42;
  --dark-background: #1A1A1A;
  --dark-surface: #2D2D2D;
  --dark-text: #E6D5AA;
  
  /* Text colors */
  --text-primary: #3C2415;
  --text-secondary: #6F4E37;
  --text-light: #A67B5B;
  --text-white: #FFFFFF;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-xxl: 1.5rem;
  --font-size-xxxl: 2rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(60, 36, 21, 0.1);
  --shadow-md: 0 4px 6px rgba(60, 36, 21, 0.1);
  --shadow-lg: 0 10px 15px rgba(60, 36, 21, 0.1);
  --shadow-xl: 0 20px 25px rgba(60, 36, 21, 0.1);
  
  /* Border radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-modal: 1050;
  --z-toast: 1100;
  --z-loading: 1200;
}

/* Dark theme variables */
[data-theme="dark"] {
  --primary-color: var(--dark-primary);
  --secondary-color: var(--dark-secondary);
  --accent-color: var(--dark-accent);
  --light-accent: var(--dark-light-accent);
  --background-color: var(--dark-background);
  --text-primary: var(--dark-text);
  --text-secondary: var(--dark-text);
  --text-light: var(--dark-text);
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* App container */
.app-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.app-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-white);
  padding: var(--spacing-md) var(--spacing-lg);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: var(--z-dropdown);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
}

.app-title {
  font-size: var(--font-size-xxl);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.app-title .icon,
.app-title i.icon {
  font-size: var(--font-size-xxxl);
}

.app-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
  display: block;
}

.icon,
i.icon {
  display: inline-block;
  font-style: normal;
}

.header-controls {
  display: flex;
  gap: var(--spacing-sm);
}

.control-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
}

.control-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.control-btn:active {
  transform: translateY(0);
}

/* Main content */
.main-content {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-lg);
  width: 100%;
}

/* Navigation */
.app-nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  background: var(--text-white);
  padding: var(--spacing-sm);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow-x: auto;
}

.nav-btn {
  background: transparent;
  border: none;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  white-space: nowrap;
  min-width: fit-content;
}

.nav-btn:hover {
  background: rgba(60, 36, 21, 0.05);
  transform: translateY(-1px);
}

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

.nav-btn .icon {
  font-size: var(--font-size-lg);
}

/* Sections */
.section {
  display: none;
  animation: fadeIn var(--transition-normal);
}

.section.active {
  display: block;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-header h2 {
  font-size: var(--font-size-xxxl);
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.section-header p {
  color: var(--text-light);
  font-size: var(--font-size-lg);
}

.emergency-header h2 {
  color: #dc3545;
}

/* Forms */
.pet-form {
  background: var(--text-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--spacing-xl);
}

.form-group h3 {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--light-accent);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.input-group {
  display: flex;
  flex-direction: column;
}

.input-group.full-width {
  grid-column: 1 / -1;
}

.input-group label {
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.input-group input,
.input-group select,
.input-group textarea {
  padding: var(--spacing-md);
  border: 2px solid #e1e5e9;
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  transition: all var(--transition-fast);
  background: var(--text-white);
  color: var(--text-primary);
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(166, 123, 91, 0.1);
}

.input-group input:invalid,
.input-group select:invalid,
.input-group textarea:invalid {
  border-color: #dc3545;
}

.input-group input:valid,
.input-group select:valid,
.input-group textarea:valid {
  border-color: #28a745;
}

.error-message {
  color: #dc3545;
  font-size: var(--font-size-xs);
  margin-top: var(--spacing-xs);
  min-height: 1rem;
}

/* Vaccine entries */
.vaccines-container {
  margin-bottom: var(--spacing-lg);
}

.vaccine-entry {
  background: #f8f9fa;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  border: 1px solid #e1e5e9;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-emergency {
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-size-md);
  font-weight: 600;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  justify-content: center;
  min-width: 120px;
}

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

.btn-primary:hover {
  background: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--text-white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-emergency {
  background: #dc3545;
  color: var(--text-white);
}

.btn-emergency:hover {
  background: #c82333;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-primary:disabled,
.btn-secondary:disabled,
.btn-emergency:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Form actions */
.form-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid #e1e5e9;
}

/* Pet Card */
.pet-card {
  background: var(--text-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin-bottom: var(--spacing-xl);
}

.card-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--text-white);
  padding: var(--spacing-xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.pet-avatar {
  width: 80px;
  height: 80px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xxxl);
  overflow: hidden;
  padding: 8px;
}

.pet-logo {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.pet-icon,
i.pet-icon {
  font-size: var(--font-size-xxxl);
  color: inherit;
}

.pet-name {
  font-size: var(--font-size-xxl);
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.pet-details {
  font-size: var(--font-size-lg);
  opacity: 0.9;
}

.card-content {
  padding: var(--spacing-xl);
}

.info-section {
  margin-bottom: var(--spacing-xl);
}

.info-section h4 {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--light-accent);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

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

.info-value {
  color: var(--text-primary);
  font-size: var(--font-size-md);
}

/* Health alerts */
.health-alerts {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.health-alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border-left: 4px solid;
  background: rgba(255, 193, 7, 0.1);
  border-left-color: #ffc107;
}

.health-alert.critical {
  background: rgba(220, 53, 69, 0.1);
  border-left-color: #dc3545;
}

.health-alert h5 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.health-alert p {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* Vaccines list */
.vaccines-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.vaccine-item {
  background: #f8f9fa;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 1px solid #e1e5e9;
}

.vaccine-item h5 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-sm);
}

.vaccine-dates {
  display: flex;
  gap: var(--spacing-lg);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.vaccine-date {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.vaccine-date span:first-child {
  font-weight: 600;
}

/* Card actions */
.card-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-xl);
}

/* QR Code */
.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.qr-code {
  background: var(--text-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  min-width: 300px;
  min-height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.qr-placeholder {
  text-align: center;
  color: var(--text-light);
}

.qr-placeholder .icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  display: block;
}

.qr-info {
  background: var(--text-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  max-width: 400px;
  text-align: center;
}

.qr-info h3 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
}

.qr-instructions {
  text-align: left;
  color: var(--text-secondary);
}

.qr-instructions li {
  margin-bottom: var(--spacing-sm);
}

.qr-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

/* Emergency */
.emergency-card {
  background: var(--text-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-xl);
  border: 2px solid #dc3545;
}

.emergency-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid #dc3545;
}

.emergency-item h3 {
  color: #dc3545;
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.emergency-value {
  color: var(--text-primary);
  font-size: var(--font-size-xl);
  font-weight: 600;
}

.emergency-alerts {
  margin-bottom: var(--spacing-xl);
}

.emergency-contacts {
  background: #f8f9fa;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-xl);
}

.emergency-contacts h3 {
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
}

.contact-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid #e1e5e9;
}

.contact-item:last-child {
  border-bottom: none;
}

.emergency-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
}

/* Loading overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(60, 36, 21, 0.8);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: var(--z-loading);
  color: var(--text-white);
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top: 4px solid var(--text-white);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-lg);
}

/* Toast notifications */
.toast-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.toast {
  background: var(--text-white);
  color: var(--text-primary);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--primary-color);
  animation: slideIn var(--transition-normal);
  max-width: 300px;
}

.toast.success {
  border-left-color: #28a745;
}

.toast.error {
  border-left-color: #dc3545;
}

.toast.warning {
  border-left-color: #ffc107;
}

/* Footer */
.app-footer {
  background: var(--primary-color);
  color: var(--text-white);
  text-align: center;
  padding: var(--spacing-lg);
  margin-top: auto;
}

.app-footer p {
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

.footer-logo {
  height: 32px;
  width: auto;
  object-fit: contain;
  display: block;
  opacity: 0.9;
}

.app-footer a {
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.app-footer a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* FAQ Styles */
.faq-container {
  background: var(--text-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid #e1e5e9;
}

.faq-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.faq-item h3 {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.faq-item p {
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-item a {
  color: var(--accent-color);
  text-decoration: none;
}

.faq-item a:hover {
  text-decoration: underline;
}

/* Privacy Styles */
.privacy-container {
  background: var(--text-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.privacy-section {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid #e1e5e9;
}

.privacy-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.privacy-section h3 {
  color: var(--primary-color);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.privacy-section p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.privacy-section ul {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  line-height: 1.8;
}

.privacy-section li {
  margin-bottom: var(--spacing-sm);
}

.privacy-section a {
  color: var(--accent-color);
  text-decoration: none;
}

.privacy-section a:hover {
  text-decoration: underline;
}

.privacy-section strong {
  color: var(--primary-color);
}

.back-link {
  margin-top: var(--spacing-xl);
  text-align: center;
}

/* Dark theme adjustments for FAQ and Privacy */
[data-theme="dark"] .faq-container,
[data-theme="dark"] .privacy-container {
  background: var(--dark-surface);
  color: var(--dark-text);
}

[data-theme="dark"] .faq-item,
[data-theme="dark"] .privacy-section {
  border-bottom-color: var(--dark-accent);
}

[data-theme="dark"] .faq-item h3,
[data-theme="dark"] .privacy-section h3 {
  color: var(--dark-text);
}

[data-theme="dark"] .faq-item p,
[data-theme="dark"] .privacy-section p,
[data-theme="dark"] .privacy-section ul,
[data-theme="dark"] .privacy-section li {
  color: var(--dark-text);
}

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

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive design */
@media (max-width: 768px) {
  .app-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .app-title {
    font-size: var(--font-size-xl);
  }
  
  .app-logo {
    height: 36px;
  }
  
  .footer-logo {
    height: 24px;
  }
  
  .main-content {
    padding: var(--spacing-md);
  }
  
  .app-nav {
    padding: var(--spacing-xs);
  }
  
  .nav-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-xs);
  }
  
  .pet-form {
    padding: var(--spacing-lg);
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .card-header {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  .pet-avatar {
    width: 60px;
    height: 60px;
  }
  
  .card-content {
    padding: var(--spacing-lg);
  }
  
  .info-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .card-actions {
    flex-direction: column;
  }
  
  .qr-container {
    gap: var(--spacing-lg);
  }
  
  .qr-code {
    min-width: 250px;
    min-height: 250px;
    padding: var(--spacing-lg);
  }
  
  .qr-actions {
    flex-direction: column;
  }
  
  .emergency-info {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .emergency-actions {
    flex-direction: column;
  }
  
  .toast-container {
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    left: var(--spacing-sm);
  }
  
  .toast {
    max-width: none;
  }
}

@media (max-width: 480px) {
  .header-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .app-title {
    font-size: var(--font-size-lg);
  }
  
  .app-logo {
    height: 32px;
  }
  
  .footer-logo {
    height: 20px;
  }
  
  .section-header h2 {
    font-size: var(--font-size-xxl);
  }
  
  .pet-form {
    padding: var(--spacing-md);
  }
  
  .vaccine-dates {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .contact-item {
    flex-direction: column;
    gap: var(--spacing-xs);
  }
}

/* Print styles */
@media print {
  .app-header,
  .app-nav,
  .form-actions,
  .card-actions,
  .qr-actions,
  .emergency-actions,
  .app-footer {
    display: none;
  }
  
  .main-content {
    padding: 0;
  }
  
  .pet-card {
    box-shadow: none;
    border: 1px solid #ccc;
  }
  
  .section {
    display: block !important;
  }
  
  .section:not(.active) {
    display: none !important;
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #000000;
    --secondary-color: #333333;
    --accent-color: #666666;
    --light-accent: #999999;
    --background-color: #ffffff;
    --text-primary: #000000;
    --text-secondary: #333333;
    --text-light: #666666;
  }
}

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

/* Focus styles for accessibility */
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* Screen reader only content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Dark theme specific styles */
[data-theme="dark"] .pet-form,
[data-theme="dark"] .pet-card,
[data-theme="dark"] .qr-code,
[data-theme="dark"] .qr-info,
[data-theme="dark"] .emergency-card,
[data-theme="dark"] .toast {
  background: var(--dark-surface);
  color: var(--dark-text);
}

[data-theme="dark"] .input-group input,
[data-theme="dark"] .input-group select,
[data-theme="dark"] .input-group textarea {
  background: var(--dark-surface);
  color: var(--dark-text);
  border-color: var(--dark-accent);
}

[data-theme="dark"] .vaccine-entry,
[data-theme="dark"] .vaccine-item,
[data-theme="dark"] .emergency-contacts {
  background: var(--dark-background);
  color: var(--dark-text);
}

[data-theme="dark"] .app-nav {
  background: var(--dark-surface);
}

[data-theme="dark"] .nav-btn {
  color: var(--dark-text);
}

[data-theme="dark"] .nav-btn:hover {
  background: rgba(230, 213, 170, 0.1);
}