.text-gradient {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 50%, #e2e8f0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: gradientShift 4s ease-in-out infinite;
}

html,
body {
  overflow-x: hidden;
}

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

.shadow-glow {
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.3), 0 4px 15px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

.shadow-glow:hover {
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.5), 0 8px 25px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px);
}

.fade-in-up {
  animation: fadeInUp 1s ease-out forwards;
  opacity: 0;
}

.fade-in-up.delay-1 {
  animation-delay: 0.2s;
}
.fade-in-up.delay-2 {
  animation-delay: 0.4s;
}
.fade-in-up.delay-3 {
  animation-delay: 0.6s;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-video {
  filter: brightness(0.7) contrast(1.1);
}

.hero-overlay {
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0.3) 0%,
    rgba(0, 0, 0, 0.5) 50%,
    rgba(0, 0, 0, 0.7) 100%
  );
}

/* Amélioration de l'accessibilité */
@media (prefers-reduced-motion: reduce) {
  .text-gradient,
  .fade-in-up,
  .shadow-glow,
  .btn-secondary {
    animation: none !important;
    transition: none !important;
  }
}

/* Optimisation mobile */
@media (max-width: 640px) {
  .hero-title {
    font-size: 2.25rem;
    line-height: 1.2;
  }
}

/* Indicateur de scroll */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}