/* ==========================================
   VARIABLES ET RESET
   ========================================== */
:root {
  --primary: #10b981;
  --secondary: #059669;
  --accent: #34d399;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

* {
  scroll-behavior: smooth;
}

/* ==========================================
   LOADER ANIMATION
   ========================================== */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-content {
  text-align: center;
}

.spinner {
  width: 60px;
  height: 60px;
  border: 4px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

.loader-text {
  color: white;
  font-size: 18px;
  font-weight: 500;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ==========================================
   NAVIGATION ANIMATIONS
   ========================================== */
.nav-slide-down {
  animation: slideDown 0.5s ease forwards;
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.logo-scale {
  animation: scaleIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
  animation-delay: 0.3s;
  opacity: 0;
}

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

.rotate-animation {
  animation: rotateIcon 3s ease-in-out infinite;
}

@keyframes rotateIcon {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(180deg); }
}

.nav-link {
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-normal);
}

.nav-link:hover::after {
  width: 100%;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 8px;
  font-weight: 600;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 6px rgba(16, 185, 129, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 12px rgba(16, 185, 129, 0.3);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
  border-radius: 8px;
  font-weight: 600;
  transition: all var(--transition-normal);
}

.btn-secondary:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(16, 185, 129, 0.2);
}

.btn-large {
  padding: 16px 32px;
  font-size: 18px;
}

.btn-white {
  background: white;
  color: var(--primary);
}

.btn-white:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
}

.btn-outline-white {
  background: transparent;
  color: white;
  border: 2px solid white;
}

.btn-outline-white:hover {
  background: white;
  color: var(--primary);
  transform: translateY(-2px);
}

/* ==========================================
   PULSE ANIMATION
   ========================================== */
.pulse-animation {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

/* ==========================================
   FADE IN ANIMATIONS
   ========================================== */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

.fade-in-up.delay-200 {
  animation-delay: 0.2s;
}

.fade-in-up.delay-400 {
  animation-delay: 0.4s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* ==========================================
   FLOATING CARD
   ========================================== */
.floating-card {
  animation: float 3s ease-in-out infinite;
}

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

.floating-card .progress-bar {
  animation: progressFill 2s ease-out forwards;
}

@keyframes progressFill {
  from {
    width: 0;
  }
}

/* ==========================================
   STATS COUNTER
   ========================================== */
.stat-card {
  padding: 20px;
  transition: transform var(--transition-normal);
}

.stat-card:hover {
  transform: translateY(-5px);
}

.counter {
  transition: color var(--transition-fast);
}

/* ==========================================
   FEATURE CARDS
   ========================================== */
.feature-card {
  background: white;
  padding: 32px;
  border-radius: 16px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.6s ease forwards;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(16, 185, 129, 0.15);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: transform var(--transition-normal);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotate(5deg);
}

/* ==========================================
   PRICING CARDS
   ========================================== */
.pricing-card {
  background: white;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: all var(--transition-normal);
  position: relative;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s ease forwards;
}

.pricing-card:nth-child(1) { animation-delay: 0.1s; }
.pricing-card:nth-child(2) { animation-delay: 0.2s; }
.pricing-card:nth-child(3) { animation-delay: 0.3s; }

.pricing-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.pricing-card-popular {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 20px 40px rgba(16, 185, 129, 0.3);
  position: relative;
  transform: scale(1.05);
  opacity: 0;
  animation: scaleInCard 0.6s ease forwards;
  animation-delay: 0.2s;
}

@keyframes scaleInCard {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1.05);
  }
}

.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: white;
  color: var(--primary);
  padding: 8px 24px;
  border-radius: 20px;
  font-weight: 700;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  animation: bounce 2s ease infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(-5px);
  }
}

/* ==========================================
   HOW IT WORKS SECTION
   ========================================== */
.how-it-works-card {
  background: white;
  padding: 32px;
  border-radius: 16px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  position: relative;
  text-align: center;
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s ease forwards;
}

.how-it-works-card:nth-child(1) { animation-delay: 0.1s; }
.how-it-works-card:nth-child(2) { animation-delay: 0.2s; }
.how-it-works-card:nth-child(3) { animation-delay: 0.3s; }
.how-it-works-card:nth-child(4) { animation-delay: 0.4s; }

.how-it-works-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px rgba(16, 185, 129, 0.15);
}

.step-number {
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 4px 8px rgba(16, 185, 129, 0.3);
}

.step-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(5, 150, 105, 0.1));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 20px auto;
  transition: transform var(--transition-normal);
}

.how-it-works-card:hover .step-icon {
  transform: scale(1.1) rotate(360deg);
}

/* ==========================================
   RESPONSIVE ANIMATIONS
   ========================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==========================================
   INTERSECTION OBSERVER READY
   ========================================== */
.reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================
   SCROLL PROGRESS BAR
   ========================================== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  z-index: 9999;
  transition: width 0.1s ease;
}

/* ==========================================
   CUSTOM SCROLLBAR
   ========================================== */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 5px;
}

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

/* ==========================================
   UTILITIES
   ========================================== */
.shadow-glow {
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.5);
}

.hover-lift {
  transition: transform var(--transition-normal);
}

.hover-lift:hover {
  transform: translateY(-5px);
}