/* Thèmes Dark/Light pour CFA */

:root {
  /* Light Theme (Default) */
  --primary-color: #2D5A27;
  --secondary-color: #FF6B47;
  --accent-color: #1E3A8A;
  --success-color: #10B981;
  --warning-color: #F59E0B;
  --error-color: #EF4444;
  
  /* Background Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8FAFC;
  --bg-tertiary: #F1F5F9;
  --bg-overlay: rgba(255, 255, 255, 0.95);
  
  /* Text Colors */
  --text-primary: #1F2937;
  --text-secondary: #6B7280;
  --text-tertiary: #9CA3AF;
  --text-inverse: #FFFFFF;
  
  /* Border Colors */
  --border-primary: #E5E7EB;
  --border-secondary: #D1D5DB;
  --border-focus: var(--primary-color);
  
  /* Shadow */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  --gradient-hero: linear-gradient(135deg, #2D5A27 0%, #FF6B47 50%, #1E3A8A 100%);
  --gradient-card: linear-gradient(145deg, #FFFFFF, #F8FAFC);
}

[data-theme="dark"] {
  /* Dark Theme */
  --primary-color: #34D399;
  --secondary-color: #F97316;
  --accent-color: #3B82F6;
  --success-color: #10B981;
  --warning-color: #F59E0B;
  --error-color: #EF4444;
  
  /* Background Colors */
  --bg-primary: #111827;
  --bg-secondary: #1F2937;
  --bg-tertiary: #374151;
  --bg-overlay: rgba(17, 24, 39, 0.95);
  
  /* Text Colors */
  --text-primary: #F9FAFB;
  --text-secondary: #D1D5DB;
  --text-tertiary: #9CA3AF;
  --text-inverse: #111827;
  
  /* Border Colors */
  --border-primary: #374151;
  --border-secondary: #4B5563;
  --border-focus: var(--primary-color);
  
  /* Shadow */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  --gradient-hero: linear-gradient(135deg, #34D399 0%, #F97316 50%, #3B82F6 100%);
  --gradient-card: linear-gradient(145deg, #1F2937, #374151);
}

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

/* Base Styles */
body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
}

/* Theme Toggle Button */
.theme-toggle {
  position: relative;
  width: 50px;
  height: 50px;
  border: none;
  border-radius: 50%;
  background: var(--gradient-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.theme-toggle:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.theme-toggle .light-icon,
.theme-toggle .dark-icon {
  position: absolute;
  font-size: 1.2rem;
  color: var(--text-inverse);
  transition: all 0.3s ease;
}

[data-theme="light"] .theme-toggle .light-icon {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="light"] .theme-toggle .dark-icon {
  opacity: 0;
  transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle .light-icon {
  opacity: 0;
  transform: rotate(-180deg);
}

[data-theme="dark"] .theme-toggle .dark-icon {
  opacity: 1;
  transform: rotate(0deg);
}

/* Navigation Theme */
.navbar {
  background: var(--bg-overlay);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-primary);
}

.nav-link {
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

/* Cards Theme */
.card,
.feature-card,
.contact-card,
.product-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.card:hover,
.feature-card:hover,
.contact-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Buttons Theme */
.btn {
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--text-inverse);
  box-shadow: var(--shadow-md);
}

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

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

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--text-inverse);
}

/* Forms Theme */
.form-input,
.search-input {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.form-input:focus,
.search-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(45, 90, 39, 0.1);
  outline: none;
}

[data-theme="dark"] .form-input:focus,
[data-theme="dark"] .search-input:focus {
  box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.1);
}

/* Modal Theme */
.modal-content {
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-xl);
}

/* Easy Signup Modal (Dark Pattern Optimized) */
.signup-modal {
  background: var(--gradient-card);
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

.signup-modal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.signup-benefits {
  background: var(--bg-secondary);
  padding: 1rem;
  margin: -1rem -1rem 1rem -1rem;
  border-bottom: 1px solid var(--border-primary);
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-color);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.benefit-item:last-child {
  margin-bottom: 0;
}

.benefit-item i {
  color: var(--secondary-color);
}

/* Social Buttons */
.social-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.3s ease;
  text-decoration: none;
  font-weight: 500;
}

.social-btn:hover {
  background: var(--bg-tertiary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.social-btn.google:hover {
  background: #4285F4;
  color: white;
}

.social-btn.facebook:hover {
  background: #1877F2;
  color: white;
}

/* Support Links Theme */
.support-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  padding: 1rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.support-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s ease;
}

.support-btn:hover::before {
  left: 100%;
}

.support-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.support-btn.coffee:hover {
  background: #FFDD00;
  color: #000;
}

.support-btn.kofi:hover {
  background: #FF5E5B;
  color: white;
}

.support-btn.patreon:hover {
  background: #FF424D;
  color: white;
}

.support-btn.github:hover {
  background: #24292e;
  color: white;
}

/* Payment Buttons */
.payment-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  color: var(--text-primary);
  padding: 1rem;
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
}

.payment-btn:hover {
  background: var(--primary-color);
  color: var(--text-inverse);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.payment-btn.donation:hover {
  background: var(--success-color);
}

.payment-btn.subscription:hover {
  background: var(--accent-color);
}

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

/* Loading Screen Theme */
.loading-screen {
  background: var(--bg-primary);
  color: var(--text-primary);
}

.logo-spin {
  filter: drop-shadow(0 0 20px var(--primary-color));
}

/* Hero Section Theme */
.hero {
  background: var(--gradient-hero);
  color: var(--text-inverse);
  position: relative;
  overflow: hidden;
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.1;
}

/* Trust Indicators */
.trust-indicators {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-inverse);
  font-size: 0.9rem;
  opacity: 0.9;
}

.trust-item i {
  color: var(--secondary-color);
}

/* Footer Theme */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-primary);
  color: var(--text-secondary);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.footer-logo img {
  width: 32px;
  height: 32px;
}

.footer-logo span {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.footer-social a {
  color: var(--text-tertiary);
  font-size: 1.2rem;
  margin-right: 1rem;
  transition: color 0.3s ease;
}

.footer-social a:hover {
  color: var(--primary-color);
}

/* Responsive Theme Adjustments */
@media (max-width: 768px) {
  .theme-toggle {
    width: 40px;
    height: 40px;
  }
  
  .trust-indicators {
    gap: 1rem;
  }
  
  .trust-item {
    font-size: 0.8rem;
  }
}

/* Dark Theme Specific Adjustments */
[data-theme="dark"] .hero {
  background: linear-gradient(135deg, #065F46 0%, #DC2626 50%, #1E40AF 100%);
}

[data-theme="dark"] .logo-spin {
  filter: drop-shadow(0 0 20px var(--primary-color)) brightness(1.2);
}

[data-theme="dark"] .navbar {
  background: rgba(17, 24, 39, 0.95);
}

[data-theme="dark"] .modal-content {
  background: var(--bg-secondary);
}

/* Theme Animation */
@keyframes themeTransition {
  0% { opacity: 0.8; }
  50% { opacity: 0.9; }
  100% { opacity: 1; }
}

[data-theme] {
  animation: themeTransition 0.3s ease;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

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