/* Preloader Styles */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s, visibility 0.5s;
}

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

.loader {
  width: 48px;
  height: 48px;
  border: 5px solid var(--text-on-dark);
  border-bottom-color: transparent;
  border-radius: 50%;
  display: inline-block;
  animation: rotation 1s linear infinite;
}

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

/* Particles Animation */
.particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.particle {
  position: absolute;
  border-radius: 50%;
  background: var(--accent-color);
  opacity: 0.3;
  animation: float 15s infinite linear;
}

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

/* Scroll Animation Classes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.appear {
  opacity: 1;
  transform: translateY(0);
}

.slide-in-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.appear {
  opacity: 1;
  transform: translateX(0);
}

.slide-in-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.appear {
  opacity: 1;
  transform: translateX(0);
}

.zoom-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.zoom-in.appear {
  opacity: 1;
  transform: scale(1);
}

/* Modal Animation */
.modal {
  animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-content {
  animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Hover Animations */
.service-card {
  transition: all 0.3s ease;
}

.service-card:hover {
  transform: translateY(-10px);
}

.btn {
  transition: all 0.3s ease;
}

.btn:hover {
  transform: translateY(-3px);
}

/* Loading Animation for Forms */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid #ffffff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: rotation 1s linear infinite;
}