/* CSS Variables for Theme Management */
:root {
  /* Light Theme Colors */
  --primary-color: #3C2415;
  --secondary-color: #6F4E37;
  --tertiary-color: #A67B5B;
  --accent-color: #C4915C;
  --background-color: #E6D5AA;
  --surface-color: #ffffff;
  --text-color: #3C2415;
  --text-secondary: #6F4E37;
  --border-color: #A67B5B;
  --shadow-color: rgba(60, 36, 21, 0.1);
  --success-color: #4CAF50;
  --warning-color: #FF9800;
  --error-color: #f44336;
  --info-color: #2196F3;
  
  /* 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, 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;
  
  /* Border Radius */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-xl: 1.5rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Dark Theme */
[data-theme="dark"] {
  --primary-color: #E6D5AA;
  --secondary-color: #C4915C;
  --tertiary-color: #A67B5B;
  --accent-color: #6F4E37;
  --background-color: #1a1a1a;
  --surface-color: #2d2d2d;
  --text-color: #E6D5AA;
  --text-secondary: #C4915C;
  --border-color: #6F4E37;
  --shadow-color: rgba(0, 0, 0, 0.3);
}

/* 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-color);
  background-color: var(--background-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Container */
.app-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* Header Styles */
.app-header {
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px var(--shadow-color);
}

.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;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.pill-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.pill-icon img {
  height: 32px;
  width: auto;
  display: block;
}

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

.theme-toggle,
.language-toggle {
  background: none;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-color);
  font-size: var(--font-size-sm);
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover,
.language-toggle:hover {
  background-color: var(--primary-color);
  color: var(--background-color);
  transform: translateY(-2px);
}

/* Navigation Styles */
.app-nav {
  background-color: var(--surface-color);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-sm) var(--spacing-md);
  position: sticky;
  top: 80px;
  z-index: 90;
}

.nav-container {
  display: flex;
  gap: var(--spacing-xs);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.nav-item:hover {
  background-color: var(--tertiary-color);
  color: var(--background-color);
  transform: translateY(-1px);
}

.nav-item.active {
  background-color: var(--primary-color);
  color: var(--background-color);
  box-shadow: 0 2px 8px var(--shadow-color);
}

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

.nav-text {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

/* Main Content */
.app-main {
  flex: 1;
  padding: var(--spacing-lg);
}

.content-section {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

.content-section.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.section-header h2 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--primary-color);
}

/* Button Styles */
.btn-primary,
.btn-secondary {
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  text-decoration: none;
  min-height: 40px;
}

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

.btn-primary:hover {
  background-color: var(--secondary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

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

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

.btn-icon {
  font-size: var(--font-size-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Material icons alignment */
.material-icons-outlined {
  font-family: 'Material Icons Outlined';
  font-weight: normal;
  font-style: normal;
  font-size: 1.25rem;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  -webkit-font-smoothing: antialiased;
}

/* Medications Grid */
.medications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.medication-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 2px 8px var(--shadow-color);
  transition: all var(--transition-fast);
}

.medication-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--shadow-color);
}

.medication-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.medication-info h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

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

.medication-actions {
  display: flex;
  gap: var(--spacing-xs);
}

.btn-icon-only {
  background: none;
  border: none;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: var(--font-size-lg);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-edit {
  color: var(--info-color);
}

.btn-delete {
  color: var(--error-color);
}

.btn-icon-only:hover {
  background-color: var(--border-color);
  transform: scale(1.1);
}

.medication-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.detail-item {
  display: flex;
  flex-direction: column;
}

.detail-label {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.detail-value {
  font-size: var(--font-size-sm);
  color: var(--text-color);
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  animation: fadeIn 0.3s ease-in-out;
}

.modal.active {
  display: flex;
 
  justify-content: center;

}

.modal-content {
  background-color: var(--surface-color);
  border-radius: var(--border-radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 8px 32px var(--shadow-color);
  animation: slideUp 0.3s ease-out;
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary-color);
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-xxl);
  cursor: pointer;
  color: var(--text-secondary);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--error-color);
  color: white;
}

/* Form Styles */
.medication-form {
  padding: var(--spacing-lg);
}

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

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-family: var(--font-family);
  background-color: var(--surface-color);
  color: var(--text-color);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(60, 36, 21, 0.1);
}

.form-group input:invalid {
  border-color: var(--error-color);
}

.form-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
  margin-top: var(--spacing-xl);
}

/* Schedule Styles */
.schedule-container {
  display: grid;
  gap: var(--spacing-lg);
}

.schedule-day {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 2px 8px var(--shadow-color);
}

.schedule-day h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: var(--spacing-md);
}

.schedule-items {
  display: grid;
  gap: var(--spacing-sm);
}

.schedule-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-md);
  background-color: var(--background-color);
  border-left: 4px solid var(--accent-color);
}

.schedule-time {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--primary-color);
  min-width: 80px;
}

.schedule-medication {
  flex: 1;
}

.schedule-medication h4 {
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
}

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

/* Reminders Styles */
.reminders-container {
  display: grid;
  gap: var(--spacing-lg);
}

.reminder-card {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 2px 8px var(--shadow-color);
  transition: all var(--transition-fast);
}

.reminder-card.urgent {
  border-color: var(--error-color);
  background-color: rgba(244, 67, 54, 0.05);
  animation: pulse-urgent 2s infinite;
}

@keyframes pulse-urgent {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

.reminder-card.due-soon {
  border-color: var(--warning-color);
  background-color: rgba(255, 152, 0, 0.05);
}

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

.reminder-status {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
}

.reminder-status.urgent {
  background-color: var(--error-color);
  color: white;
}

.reminder-status.due-soon {
  background-color: var(--warning-color);
  color: white;
}

.reminder-status.upcoming {
  background-color: var(--info-color);
  color: white;
}

.reminder-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.btn-administered {
  background-color: var(--success-color);
  color: white;
}

.btn-administered:hover {
  background-color: #45a049;
}

.btn-snooze {
  background-color: var(--warning-color);
  color: white;
}

.btn-snooze:hover {
  background-color: #f57c00;
}

/* History Styles */
.history-filters {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
}

.date-filter,
.pet-filter {
  padding: var(--spacing-sm);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  background-color: var(--surface-color);
  color: var(--text-color);
}

.history-container {
  display: grid;
  gap: var(--spacing-md);
}

.history-item {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-fast);
}

.history-item:hover {
  background-color: var(--background-color);
}

.history-info {
  flex: 1;
}

.history-info h4 {
  font-size: var(--font-size-md);
  font-weight: 500;
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
}

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

.history-timestamp {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-align: right;
}

/* Notification Styles */
.notification-container {
  position: fixed;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 1100;
  max-width: 400px;
}

.notification {
  background-color: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  box-shadow: 0 4px 16px var(--shadow-color);
  animation: slideInRight 0.3s ease-out;
  position: relative;
}

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

.notification.success {
  border-left: 4px solid var(--success-color);
}

.notification.error {
  border-left: 4px solid var(--error-color);
}

.notification.warning {
  border-left: 4px solid var(--warning-color);
}

.notification.info {
  border-left: 4px solid var(--info-color);
}

.notification-close {
  position: absolute;
  top: var(--spacing-xs);
  right: var(--spacing-xs);
  background: none;
  border: none;
  font-size: var(--font-size-lg);
  cursor: pointer;
  color: var(--text-secondary);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.notification-close:hover {
  background-color: var(--border-color);
}

/* Loading Overlay */
.loading-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1200;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.loading-overlay.active {
  display: flex;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border-color);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

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

.loading-overlay p {
  color: var(--background-color);
  font-size: var(--font-size-lg);
  font-weight: 500;
}

/* Footer Styles */
.app-footer {
  background-color: var(--surface-color);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg);
  text-align: center;
  margin-top: auto;
}

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

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

.app-footer a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
  .app-header {
    padding: var(--spacing-sm);
  }
  
  .header-content {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .app-title {
    font-size: var(--font-size-xl);
  }
  
  .app-nav {
    top: 100px;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .nav-item {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .nav-text {
    display: none;
  }
  
  .app-main {
    padding: var(--spacing-md);
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .medications-grid {
    grid-template-columns: 1fr;
  }
  
  .medication-details {
    grid-template-columns: 1fr;
  }
  
  .form-actions {
    flex-direction: column;
  }
  
  .history-filters {
    flex-direction: column;
    align-items: stretch;
  }
  
  .history-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }
  
  .notification-container {
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    left: var(--spacing-sm);
    max-width: none;
  }
}

@media (max-width: 480px) {
  .modal-content {
    margin: var(--spacing-sm);
    width: calc(100% - var(--spacing-lg));
  }
  
  .app-title {
    font-size: var(--font-size-lg);
  }
  
  .pill-icon {
    font-size: 1.2em;
  }
  
  .header-controls {
    flex-direction: row;
    gap: var(--spacing-xs);
  }
  
  .theme-toggle,
  .language-toggle {
    min-width: 36px;
    height: 36px;
    font-size: var(--font-size-xs);
  }
}

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

/* Focus Styles for Keyboard Navigation */
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --shadow-color: rgba(0, 0, 0, 0.5);
  }
  
  .medication-card,
  .reminder-card,
  .history-item {
    border-width: 2px;
  }
}

/* Print Styles */
@media print {
  .app-header,
  .app-nav,
  .app-footer,
  .modal,
  .notification-container,
  .loading-overlay {
    display: none !important;
  }
  
  .app-main {
    padding: 0;
  }
  
  .content-section {
    display: block !important;
  }
  
  .medication-card,
  .reminder-card,
  .history-item {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #000;
  }
}