/* Modern Theme System with Dark/Light Mode */

:root {
  /* Light Theme Colors */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary-color: #f1f5f9;
  --accent-color: #06b6d4;
  
  /* Background Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-sidebar: #1e293b;
  
  /* Text Colors */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #ffffff;
  
  /* Border & Divider Colors */
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --divider-color: #e2e8f0;
  
  /* Status Colors */
  --success-color: #10b981;
  --success-bg: #ecfdf5;
  --warning-color: #f59e0b;
  --warning-bg: #fffbeb;
  --danger-color: #ef4444;
  --danger-bg: #fef2f2;
  --info-color: #3b82f6;
  --info-bg: #eff6ff;
  
  /* Shadows */
  --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);
  
  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

/* Dark Theme */
[data-theme="dark"] {
  /* Background Colors */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: rgba(30, 41, 59, 0.8);
  --bg-sidebar: #0f172a;
  
  /* Text Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-inverse: #0f172a;
  
  /* Border & Divider Colors */
  --border-color: rgba(51, 65, 85, 0.4);
  --border-light: rgba(71, 85, 105, 0.3);
  --divider-color: rgba(51, 65, 85, 0.3);
  
  /* Status Colors Dark Mode */
  --success-bg: rgba(34, 197, 94, 0.15);
  --success-color: #4ade80;
  --warning-bg: rgba(245, 158, 11, 0.15);
  --warning-color: #fbbf24;
  --danger-bg: rgba(239, 68, 68, 0.15);
  --danger-color: #f87171;
  --info-bg: rgba(59, 130, 246, 0.15);
  --info-color: #60a5fa;
  
  /* Enhanced Primary Colors for Dark Mode */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --accent-color: #06b6d4;
  
  /* Enhanced Shadows for Dark Mode */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.4);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.5);
}

/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  font-feature-settings: 'cv11', 'ss01';
  font-variation-settings: 'opsz' 32;
}

/* Modern Theme Toggle Button */
.theme-toggle {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 99999;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 0;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
  overflow: hidden;
  font-family: 'Inter', sans-serif;
}

.theme-toggle::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

.theme-toggle:hover {
  background: var(--bg-secondary);
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.theme-toggle:hover::before {
  opacity: 0.1;
}

.theme-toggle:active {
  transform: translateY(-1px) scale(1.02);
}

.theme-toggle i {
  font-size: 1.3rem;
  transition: all var(--transition-normal);
  position: relative;
  z-index: 1;
}

.theme-toggle:hover i {
  transform: rotate(360deg) scale(1.1);
  color: var(--primary-color);
}

/* Enhanced styles for different themes */
[data-theme="dark"] .theme-toggle {
  background: rgba(30, 41, 59, 0.9);
  border: 1px solid rgba(99, 102, 241, 0.3);
  box-shadow: 
    0 10px 25px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(99, 102, 241, 0.1);
}

[data-theme="dark"] .theme-toggle:hover {
  background: rgba(30, 41, 59, 0.95);
  box-shadow: 
    0 15px 35px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(99, 102, 241, 0.3);
}

/* Pulse animation for first-time users */
@keyframes themePulse {
  0%, 100% { 
    box-shadow: var(--shadow-lg), 0 0 0 0 rgba(99, 102, 241, 0.4);
  }
  50% { 
    box-shadow: var(--shadow-xl), 0 0 0 8px rgba(99, 102, 241, 0);
  }
}

.theme-toggle.first-visit {
  animation: themePulse 2s infinite;
}

/* Tooltip for theme toggle */
.theme-toggle::after {
  content: attr(title);
  position: absolute;
  bottom: -45px;
  right: 0;
  background: var(--bg-card);
  color: var(--text-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 500;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-5px);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
  z-index: 10000;
}

.theme-toggle:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .theme-toggle {
    top: 16px;
    right: 16px;
    width: 48px;
    height: 48px;
  }
  
  .theme-toggle i {
    font-size: 1.2rem;
  }
  
  .theme-toggle::after {
    display: none; /* Hide tooltip on mobile */
  }
}

/* Force override any conflicting styles */
button.theme-toggle {
  position: fixed !important;
  top: 24px !important;
  right: 24px !important;
  z-index: 99999 !important;
  width: 52px !important;
  height: 52px !important;
  border-radius: var(--radius-xl) !important;
  background: var(--bg-card) !important;
  border: 1px solid var(--border-color) !important;
  color: var(--text-primary) !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-family: 'Inter', sans-serif !important;
}

@media (max-width: 768px) {
  button.theme-toggle {
    top: 16px !important;
    right: 16px !important;
    width: 48px !important;
    height: 48px !important;
  }
}

/* Modern Card Design */
.modern-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  transition: all var(--transition-normal);
  overflow: hidden;
}

.modern-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* Modern Form Controls */
.modern-input {
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 1rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  width: 100%;
  font-family: inherit;
}

.modern-input:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
  background: var(--bg-primary);
}

.modern-input::placeholder {
  color: var(--text-muted);
}

/* Modern Buttons */
.modern-btn {
  background: var(--primary-color);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-family: inherit;
  text-decoration: none;
}

.modern-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

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

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

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

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

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

/* Modern Alerts */
.modern-alert {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  border: 1px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.modern-alert.alert-success {
  background: var(--success-bg);
  border-color: var(--success-color);
  color: var(--success-color);
}

.modern-alert.alert-danger {
  background: var(--danger-bg);
  border-color: var(--danger-color);
  color: var(--danger-color);
}

.modern-alert.alert-warning {
  background: var(--warning-bg);
  border-color: var(--warning-color);
  color: var(--warning-color);
}

.modern-alert.alert-info {
  background: var(--info-bg);
  border-color: var(--info-color);
  color: var(--info-color);
}

/* Modern Sidebar */
.modern-sidebar {
  background: var(--bg-sidebar);
  color: var(--text-inverse);
  width: 280px;
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 1000;
  transition: transform var(--transition-normal);
  border-right: 1px solid var(--border-color);
}

.modern-sidebar .sidebar-header {
  padding: var(--spacing-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modern-sidebar .sidebar-menu {
  padding: var(--spacing-lg);
}

.modern-sidebar .menu-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  margin-bottom: var(--spacing-xs);
}

.modern-sidebar .menu-item:hover,
.modern-sidebar .menu-item.active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-inverse);
  transform: translateX(4px);
}

.modern-sidebar .menu-item.active {
  background: var(--primary-color);
}

/* Modern Table */
.modern-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.modern-table th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  padding: var(--spacing-lg);
  text-align: left;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.modern-table td {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  color: var(--text-primary);
}

.modern-table tr:hover {
  background: var(--bg-secondary);
}

/* Modern Badge */
.modern-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.modern-badge.badge-success {
  background: var(--success-bg);
  color: var(--success-color);
}

.modern-badge.badge-warning {
  background: var(--warning-bg);
  color: var(--warning-color);
}

.modern-badge.badge-danger {
  background: var(--danger-bg);
  color: var(--danger-color);
}

/* Loading Animation */
.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-color);
  border-top: 2px solid var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

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

[data-theme="dark"] .glass-effect {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
  .theme-toggle {
    top: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
  }
  
  .modern-sidebar {
    transform: translateX(-100%);
  }
  
  .modern-sidebar.active {
    transform: translateX(0);
  }
  
  .modern-card {
    margin: var(--spacing-md);
  }
  
  .modern-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9rem;
  }
}

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

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--radius-md);
}

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

/* Focus Visible for Accessibility */
.modern-btn:focus-visible,
.modern-input:focus-visible,
.theme-toggle:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}