/**
 * Theme Styles - Dark/Light Mode CSS Variables and Styles
 */

/* CSS Custom Properties for Light Theme (Default) */
:root {
  /* Light Theme Colors */
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-primary-light: #60a5fa;
  --color-secondary: #6b7280;
  --color-accent: #f59e0b;
  
  /* Background Colors */
  --color-background: #ffffff;
  --color-background-secondary: #f9fafb;
  --color-background-tertiary: #f3f4f6;
  --color-surface: #ffffff;
  --color-surface-secondary: #f9fafb;
  
  /* Text Colors */
  --color-text: #111827;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;
  --color-text-inverse: #ffffff;
  
  /* Border Colors */
  --color-border: #e5e7eb;
  --color-border-secondary: #d1d5db;
  --color-border-focus: #3b82f6;
  
  /* Status Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  /* Shadow Colors */
  --color-shadow: rgba(0, 0, 0, 0.1);
  --color-shadow-lg: rgba(0, 0, 0, 0.15);
  --color-shadow-xl: rgba(0, 0, 0, 0.2);
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  --gradient-secondary: linear-gradient(135deg, #6b7280 0%, #4b5563 100%);
  --gradient-surface: linear-gradient(135deg, #ffffff 0%, #f9fafb 100%);
  
  /* Transitions */
  --transition-theme: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease-in-out;
  --transition-slow: all 0.5s ease-in-out;
}

/* Dark Theme Colors */
.theme-dark {
  /* Primary Colors */
  --color-primary: #60a5fa;
  --color-primary-dark: #3b82f6;
  --color-primary-light: #93c5fd;
  --color-secondary: #9ca3af;
  --color-accent: #fbbf24;
  
  /* Background Colors */
  --color-background: #111827;
  --color-background-secondary: #1f2937;
  --color-background-tertiary: #374151;
  --color-surface: #1f2937;
  --color-surface-secondary: #374151;
  
  /* Text Colors */
  --color-text: #f9fafb;
  --color-text-secondary: #d1d5db;
  --color-text-tertiary: #9ca3af;
  --color-text-inverse: #111827;
  
  /* Border Colors */
  --color-border: #374151;
  --color-border-secondary: #4b5563;
  --color-border-focus: #60a5fa;
  
  /* Status Colors */
  --color-success: #34d399;
  --color-warning: #fbbf24;
  --color-error: #f87171;
  --color-info: #60a5fa;
  
  /* Shadow Colors */
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-shadow-lg: rgba(0, 0, 0, 0.4);
  --color-shadow-xl: rgba(0, 0, 0, 0.5);
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
  --gradient-secondary: linear-gradient(135deg, #9ca3af 0%, #6b7280 100%);
  --gradient-surface: linear-gradient(135deg, #1f2937 0%, #374151 100%);
}

/* Theme Transition */
* {
  transition: background-color var(--transition-theme),
              border-color var(--transition-theme),
              color var(--transition-theme),
              box-shadow var(--transition-theme);
}

/* Theme Toggle Button Styles */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  color: var(--color-text);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-fast);
  user-select: none;
}

.theme-toggle:hover {
  background: var(--color-surface-secondary);
  border-color: var(--color-border-secondary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--color-shadow);
}

.theme-toggle:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px var(--color-shadow);
}

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

.theme-toggle i {
  font-size: 1rem;
  transition: var(--transition-fast);
}

.theme-toggle:hover i {
  transform: scale(1.1);
}

/* Theme Toggle Sizes */
.theme-toggle-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
  gap: 0.375rem;
}

.theme-toggle-sm i {
  font-size: 0.875rem;
}

.theme-toggle-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  gap: 0.75rem;
}

.theme-toggle-lg i {
  font-size: 1.25rem;
}

/* Icon Only Theme Toggle */
.theme-toggle-icon-only {
  padding: 0.5rem;
  border-radius: 50%;
  aspect-ratio: 1;
  justify-content: center;
}

.theme-toggle-icon-only .theme-toggle-label {
  display: none;
}

/* Theme Toggle in Header */
.header .theme-toggle {
  background: transparent;
  border: none;
  padding: 0.5rem;
  border-radius: 50%;
  color: var(--color-text-secondary);
}

.header .theme-toggle:hover {
  background: var(--color-surface-secondary);
  color: var(--color-text);
  transform: none;
  box-shadow: none;
}

/* Theme Toggle in Profile */
.profile-theme-toggle {
  width: 100%;
  justify-content: space-between;
  padding: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  margin-bottom: 1rem;
}

.profile-theme-toggle:hover {
  background: var(--color-surface-secondary);
  border-color: var(--color-border-secondary);
}

/* Common Theme-Aware Elements */
.theme-bg {
  background-color: var(--color-background);
}

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

.theme-bg-surface {
  background-color: var(--color-surface);
}

.theme-text {
  color: var(--color-text);
}

.theme-text-secondary {
  color: var(--color-text-secondary);
}

.theme-border {
  border-color: var(--color-border);
}

.theme-shadow {
  box-shadow: 0 1px 3px var(--color-shadow);
}

.theme-shadow-lg {
  box-shadow: 0 10px 15px var(--color-shadow-lg);
}

/* Header Theme Styles */
header {
  background: var(--color-surface) !important;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 3px var(--color-shadow);
}

header .logo-text {
  color: var(--color-text) !important;
}

header nav a,
header nav button {
  color: var(--color-text-secondary) !important;
}

header nav a:hover,
header nav button:hover {
  color: var(--color-text) !important;
}

/* Card Theme Styles */
.card,
.bg-white {
  background-color: var(--color-surface) !important;
  border-color: var(--color-border) !important;
  color: var(--color-text) !important;
}

.bg-gray-50,
.bg-gray-100 {
  background-color: var(--color-background-secondary) !important;
}

.bg-gray-200 {
  background-color: var(--color-background-tertiary) !important;
}

/* Text Theme Styles */
.text-gray-800,
.text-gray-900 {
  color: var(--color-text) !important;
}

.text-gray-600,
.text-gray-700 {
  color: var(--color-text-secondary) !important;
}

.text-gray-500 {
  color: var(--color-text-tertiary) !important;
}

/* Border Theme Styles */
.border-gray-200,
.border-gray-300 {
  border-color: var(--color-border) !important;
}

.border-gray-400 {
  border-color: var(--color-border-secondary) !important;
}

/* Input Theme Styles */
input,
textarea,
select {
  background-color: var(--color-surface) !important;
  border-color: var(--color-border) !important;
  color: var(--color-text) !important;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-border-focus) !important;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1) !important;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-tertiary) !important;
}

/* Button Theme Styles */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  border: none;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--color-shadow);
}

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

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

/* Modal Theme Styles */
.modal {
  background: var(--color-surface) !important;
  border: 1px solid var(--color-border) !important;
  box-shadow: 0 25px 50px var(--color-shadow-xl) !important;
}

.modal-backdrop {
  background: var(--color-shadow-xl) !important;
}

/* Navigation Theme Styles */
.nav-item {
  color: var(--color-text-secondary) !important;
}

.nav-item:hover,
.nav-item.active {
  color: var(--color-text) !important;
  background: var(--color-surface-secondary) !important;
}

/* Footer Theme Styles */
footer {
  background: var(--color-background-secondary) !important;
  border-top: 1px solid var(--color-border) !important;
  color: var(--color-text-secondary) !important;
}

/* Loading Spinner Theme */
.spinner {
  border-color: var(--color-border);
  border-top-color: var(--color-primary);
}

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

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

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

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

/* Selection Theme */
::selection {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

/* Focus Ring Theme */
.focus-ring:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Theme Transition Override for Specific Elements */
.theme-toggle,
.theme-toggle * {
  transition: var(--transition-fast);
}

/* Dark Mode Specific Adjustments */
.theme-dark img {
  opacity: 0.9;
}

.theme-dark img:hover {
  opacity: 1;
}

/* Light Mode Specific Adjustments */
.theme-light .shadow-lg {
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1) !important;
}

.theme-light .shadow-xl {
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15) !important;
}

/* Dark Mode Specific Adjustments */
.theme-dark .shadow-lg {
  box-shadow: 0 10px 15px rgba(0, 0, 0, 0.4) !important;
}

.theme-dark .shadow-xl {
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5) !important;
}

/* Animation for theme switching */
@keyframes themeSwitch {
  0% { opacity: 0.8; }
  50% { opacity: 0.6; }
  100% { opacity: 1; }
}

.theme-switching {
  animation: themeSwitch 0.3s ease-in-out;
}

/* Responsive Theme Toggle */
@media (max-width: 640px) {
  .theme-toggle-label {
    display: none;
  }
  
  .theme-toggle {
    padding: 0.5rem;
    border-radius: 50%;
    justify-content: center;
  }
}