/* Theme Variables */
:root {
  --primary: #3B82F6;
  --primary-dark: #2563EB;
  --secondary: #14B8A6;
  --accent: #F97316;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
}

/* Light Theme */
.light {
  --bg-primary: var(--gray-50);
  --bg-secondary: #ffffff;
  --bg-tertiary: var(--gray-100);
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-500);
  --border: var(--gray-200);
  --border-hover: var(--gray-300);
}

/* Dark Theme */
.dark {
  --bg-primary: var(--gray-900);
  --bg-secondary: var(--gray-800);
  --bg-tertiary: var(--gray-700);
  --text-primary: #ffffff;
  --text-secondary: var(--gray-300);
  --text-muted: var(--gray-400);
  --border: var(--gray-700);
  --border-hover: var(--gray-600);
}

/* eInk Theme */
.eink {
  --bg-primary: #ffffff;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f8f8f8;
  --text-primary: #000000;
  --text-secondary: #333333;
  --text-muted: #666666;
  --border: #cccccc;
  --border-hover: #999999;
}

/* SaTuS Theme */
.satus {
  --bg-primary: #f0f9ff;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e0f2fe;
  --text-primary: #0c4a6e;
  --text-secondary: #075985;
  --text-muted: #0369a1;
  --border: #bae6fd;
  --border-hover: #7dd3fc;
}

/* Apply theme variables to all elements */
body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

/* Update all background and text colors to use CSS variables */
.bg-white { background-color: var(--bg-secondary) !important; }
.bg-gray-50 { background-color: var(--bg-primary) !important; }
.bg-gray-100 { background-color: var(--bg-tertiary) !important; }
.bg-gray-800 { background-color: var(--bg-secondary) !important; }
.bg-gray-900 { background-color: var(--bg-primary) !important; }

.text-gray-900 { color: var(--text-primary) !important; }
.text-gray-600 { color: var(--text-secondary) !important; }
.text-gray-500 { color: var(--text-muted) !important; }
.text-gray-400 { color: var(--text-muted) !important; }
.text-white { color: var(--text-primary) !important; }

.border-gray-200 { border-color: var(--border) !important; }
.border-gray-300 { border-color: var(--border-hover) !important; }
.border-gray-700 { border-color: var(--border) !important; }

/* Dark theme specific overrides */
.dark .text-white { color: #ffffff !important; }
.dark .bg-gray-800 { background-color: var(--bg-secondary) !important; }
.dark .bg-gray-900 { background-color: var(--bg-primary) !important; }
/* Smooth Transitions */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* Animation Classes */
.animate-fade-in {
  animation: fadeIn 0.3s ease-in-out;
}

.animate-slide-up {
  animation: slideUp 0.3s ease-out;
}

.animate-scale-in {
  animation: scaleIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes scaleIn {
  from { 
    opacity: 0;
    transform: scale(0.95);
  }
  to { 
    opacity: 1;
    transform: scale(1);
  }
}

/* Hover Effects */
.hover-lift {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px -8px rgba(0, 0, 0, 0.1);
}

/* Focus States */
.focus-ring {
  outline: none;
  box-shadow: 0 0 0 2px #3B82F6;
}

/* Glass Effect */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.dark .glass {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Grid Pattern */
.bg-grid-pattern {
  background-image: radial-gradient(circle, #e5e7eb 1px, transparent 1px);
  background-size: 20px 20px;
}

/* Loading Animation */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
  .hover-lift:hover {
    transform: none;
    box-shadow: none;
  }
}

/* Print Styles */
@media print {
  .no-print {
    display: none !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  :root {
    --border: #000000;
    --text-primary: #000000;
    --bg-secondary: #ffffff;
  }
}

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

/* Custom Button Styles */
.btn-primary {
  background-color: var(--primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  transition: all 0.2s ease;
  border: 1px solid var(--border);
  cursor: pointer;
}

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

/* Form Styles */
.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Card Styles */
.card {
  background-color: var(--bg-secondary);
  border-radius: 0.75rem;
  padding: 1.5rem;
  box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  border: 1px solid var(--border);
}

.card:hover {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* Utility Classes */
.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
}

/* Mobile Menu */
.mobile-menu {
  display: none;
}

@media (max-width: 768px) {
  .mobile-menu {
    display: block;
  }
  
  .desktop-menu {
    display: none;
  }
}

/* Accessibility */
.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;
}

/* Focus visible for keyboard navigation */
.focus-visible:focus {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Toast Styles */
.toast {
  padding: 1rem 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  border: 1px solid;
  max-width: 24rem;
  animation: slideUp 0.3s ease-out;
}

.toast-success {
  background-color: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}

.toast-error {
  background-color: #fef2f2;
  border-color: #fecaca;
  color: #dc2626;
}

.toast-warning {
  background-color: #fffbeb;
  border-color: #fed7aa;
  color: #d97706;
}

.toast-info {
  background-color: #eff6ff;
  border-color: #bfdbfe;
  color: #2563eb;
}

.dark .toast-success {
  background-color: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.3);
  color: #4ade80;
}

.dark .toast-error {
  background-color: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.3);
  color: #f87171;
}

.dark .toast-warning {
  background-color: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.3);
  color: #fbbf24;
}

.dark .toast-info {
  background-color: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.3);
  color: #60a5fa;
}