/* Button transitions */
.btn {
  transition: all 0.15s ease;
}

/* Navigation link transitions */
.nav-link {
  transition: color 0.15s ease;
}

/* Navigation toggle transitions */
.nav-toggle {
  transition: background-color 0.15s ease;
}

/* Navigation bar transitions */
.bar {
  transition: 0.15s;
}

/* Project card transitions */
.project-card {
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

/* Social link transitions */
.social-link {
  transition: color 0.15s ease;
}

/* Form input/textarea transitions */
.form-group input,
.form-group textarea {
  transition: border-color 0.15s ease;
}

/* Mobile navigation menu transition */
.nav-menu {
  transition: 0.15s;
}

/* Hero load animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Hero title */
.hero-title {
  animation: fadeInUp 0.3s ease-out;
}

/* Hero subtitle */
.hero-subtitle {
  animation: fadeInUp 0.3s ease-out 0.1s both;
}

/* Hero description */
.hero-description {
  animation: fadeInUp 0.3s ease-out 0.2s both;
}

/* Hero buttons */
.hero-buttons {
  animation: fadeInUp 0.3s ease-out 0.3s both;
}

/* Hero viewport override */
.hero .viewport-animate {
  animation: fadeInUp 0.3s ease-out var(--animation-delay, 0.1s) both;
}

.hero .viewport-animate.animate-in,
.hero .viewport-animate.animate-out {
  animation-delay: var(--animation-delay, 0.1s);
}

/* Base viewport animation */
.viewport-animate {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
  transition-delay: var(--animation-delay, 0.1s);
}

.viewport-animate.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.viewport-animate.animate-out {
  opacity: 0;
  transform: translateY(40px);
}

/* Fast animations for re-entry */
.viewport-animate.fast-animate {
  transition: all 0.1s cubic-bezier(0.165, 0.84, 0.44, 1);
  transition-delay: calc(var(--animation-delay, 0s) * 0.3);
}

/* Hero title animations */
.viewport-animate.hero-title {
  transform: translateY(60px) scale(0.95);
}

.viewport-animate.hero-title.animate-in {
  transform: translateY(0) scale(1);
}

.viewport-animate.hero-title.always-visible {
  opacity: 1 !important;
  transform: translateY(0) scale(1) !important;
}

/* Section title animations */
.viewport-animate.section-title {
  transform: translateY(50px);
}

.viewport-animate.section-title.animate-in {
  transform: translateY(0);
}

.viewport-animate.section-title.always-visible {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* Timeline item animations */
.viewport-animate.timeline-item {
  transform: translateX(-40px);
  opacity: 0;
}

.viewport-animate.timeline-item.animate-in {
  transform: translateX(0);
  opacity: 1;
}

.viewport-animate.timeline-item:nth-child(even) {
  transform: translateX(40px);
}

.viewport-animate.timeline-item:nth-child(even).animate-in {
  transform: translateX(0);
}

/* Project card animations */
.viewport-animate.project-card {
  transform: translateY(40px) scale(0.95);
}

.viewport-animate.project-card.animate-in {
  transform: translateY(0) scale(1);
}

/* Profile image animations */
.viewport-animate.profile-img {
  transform: scale(0.8) rotate(-2deg);
  opacity: 0;
}

.viewport-animate.profile-img.animate-in {
  transform: scale(1) rotate(0deg);
  opacity: 1;
}

/* Headers stay visible for navigation */
.viewport-animate.always-visible {
  opacity: 1 !important;
}

.viewport-animate.always-visible.animate-out {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* Button hover */
.btn-primary:hover {
  transform: translateY(-2px);
}

/* Project card hover */
.project-card:hover {
  transform: translateY(-5px);
}

/* Hero gradient animation */
@keyframes gradientMove {
  0% {
    background-position: 0% 100%;
  }
  25% {
    background-position: 100% 100%;
  }
  50% {
    background-position: 100% 0%;
  }
  75% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 0% 100%;
  }
}