/* Theme System CSS */
/* Professional theme switching with CSS custom properties */

:root {
  /* Light Theme (Default) */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;
  
  --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;
  
  --success-500: #10b981;
  --success-600: #059669;
  --warning-500: #f59e0b;
  --warning-600: #d97706;
  --error-500: #ef4444;
  --error-600: #dc2626;
  
  --bg-primary: var(--gray-50);
  --bg-secondary: #ffffff;
  --bg-tertiary: var(--gray-100);
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-tertiary: var(--gray-500);
  --border-primary: var(--gray-200);
  --border-secondary: var(--gray-300);
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* Dark Theme */
[data-theme="dark"] {
  --primary-50: #1e3a8a;
  --primary-100: #1e40af;
  --primary-200: #1d4ed8;
  --primary-300: #2563eb;
  --primary-400: #3b82f6;
  --primary-500: #60a5fa;
  --primary-600: #93c5fd;
  --primary-700: #bfdbfe;
  --primary-800: #dbeafe;
  --primary-900: #eff6ff;
  
  --gray-50: #111827;
  --gray-100: #1f2937;
  --gray-200: #374151;
  --gray-300: #4b5563;
  --gray-400: #6b7280;
  --gray-500: #9ca3af;
  --gray-600: #d1d5db;
  --gray-700: #e5e7eb;
  --gray-800: #f3f4f6;
  --gray-900: #f9fafb;
  
  --bg-primary: var(--gray-100);
  --bg-secondary: var(--gray-50);
  --bg-tertiary: var(--gray-200);
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-700);
  --text-tertiary: var(--gray-600);
  --border-primary: var(--gray-300);
  --border-secondary: var(--gray-400);
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.3), 0 8px 10px -6px rgb(0 0 0 / 0.3);
}

/* Blue Theme */
[data-theme="blue"] {
  --primary-500: #0ea5e9;
  --primary-600: #0284c7;
  --primary-700: #0369a1;
  
  --bg-primary: #f0f9ff;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e0f2fe;
}

/* Green Theme */
[data-theme="green"] {
  --primary-500: #10b981;
  --primary-600: #059669;
  --primary-700: #047857;
  
  --bg-primary: #f0fdf4;
  --bg-secondary: #ffffff;
  --bg-tertiary: #dcfce7;
}

/* Auto Theme (System Preference) */
@media (prefers-color-scheme: dark) {
  [data-theme="auto"] {
    --primary-50: #1e3a8a;
    --primary-100: #1e40af;
    --primary-200: #1d4ed8;
    --primary-300: #2563eb;
    --primary-400: #3b82f6;
    --primary-500: #60a5fa;
    --primary-600: #93c5fd;
    --primary-700: #bfdbfe;
    --primary-800: #dbeafe;
    --primary-900: #eff6ff;
    
    --gray-50: #111827;
    --gray-100: #1f2937;
    --gray-200: #374151;
    --gray-300: #4b5563;
    --gray-400: #6b7280;
    --gray-500: #9ca3af;
    --gray-600: #d1d5db;
    --gray-700: #e5e7eb;
    --gray-800: #f3f4f6;
    --gray-900: #f9fafb;
    
    --bg-primary: var(--gray-100);
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-200);
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-700);
    --text-tertiary: var(--gray-600);
    --border-primary: var(--gray-300);
    --border-secondary: var(--gray-400);
  }
}

/* Theme Application Classes */
.theme-bg-primary { background-color: var(--bg-primary); }
.theme-bg-secondary { background-color: var(--bg-secondary); }
.theme-bg-tertiary { background-color: var(--bg-tertiary); }
.theme-text-primary { color: var(--text-primary); }
.theme-text-secondary { color: var(--text-secondary); }
.theme-text-tertiary { color: var(--text-tertiary); }
.theme-border-primary { border-color: var(--border-primary); }
.theme-border-secondary { border-color: var(--border-secondary); }

.theme-primary-500 { color: var(--primary-500); }
.theme-primary-600 { color: var(--primary-600); }
.theme-bg-primary-500 { background-color: var(--primary-500); }
.theme-bg-primary-600 { background-color: var(--primary-600); }

/* Theme Transition */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Theme Toggle Button Styles */
.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.5rem;
  border-radius: 0.5rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.theme-toggle.active {
  background-color: var(--primary-500);
  color: white;
  border-color: var(--primary-600);
}

/* Animated Background Gradients */
.animated-bg {
  background: linear-gradient(-45deg, var(--primary-100), var(--primary-200), var(--primary-300), var(--primary-100));
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Dark theme specific animations */
[data-theme="dark"] .animated-bg {
  background: linear-gradient(-45deg, var(--gray-800), var(--gray-700), var(--gray-600), var(--gray-800));
  background-size: 400% 400%;
}

/* Floating Elements Animation */
.floating {
  animation: floating 6s ease-in-out infinite;
}

@keyframes floating {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

/* Pulse Animation for Interactive Elements */
.pulse-on-hover:hover {
  animation: pulse 1s infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Theme-aware Form Styles */
.theme-input {
  background-color: var(--bg-secondary);
  border-color: var(--border-primary);
  color: var(--text-primary);
}

.theme-input:focus {
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.theme-button-primary {
  background-color: var(--primary-600);
  color: white;
}

.theme-button-primary:hover {
  background-color: var(--primary-700);
}

.theme-button-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
}

.theme-button-secondary:hover {
  background-color: var(--bg-tertiary);
}

/* Theme-aware Card Styles */
.theme-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-md);
}

.theme-card:hover {
  box-shadow: var(--shadow-lg);
}

/* Responsive Theme Adjustments */
@media (max-width: 768px) {
  .theme-toggle {
    padding: 0.375rem;
    font-size: 0.875rem;
  }
}

/* Print Styles */
@media print {
  [data-theme] {
    --bg-primary: white;
    --bg-secondary: white;
    --text-primary: black;
    --text-secondary: #333;
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --border-primary: #000000;
    --border-secondary: #000000;
  }
  
  [data-theme="dark"] {
    --border-primary: #ffffff;
    --border-secondary: #ffffff;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .animated-bg {
    animation: none;
    background: var(--primary-100);
  }
  
  .floating {
    animation: none;
  }
}