/* ============================================
   Personal Portfolio Website - Animations
   Smooth transitions, scroll reveals, and micro-interactions
   ============================================ */

/* ============================================
   Keyframe Animations
   ============================================ */

/* Fade in from bottom */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade in */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Slide in from left */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Slide in from right */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scale in */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* ============================================
   Animation Classes
   ============================================ */

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.fade-in {
  animation: fadeIn 0.6s ease-out forwards;
}

.slide-in-left {
  animation: slideInLeft 0.6s ease-out forwards;
}

.slide-in-right {
  animation: slideInRight 0.6s ease-out forwards;
}

.scale-in {
  animation: scaleIn 0.6s ease-out forwards;
}

/* ============================================
   Scroll Reveal Animation
   ============================================ */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Reveal variations */
.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

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

.reveal-scale.active {
  opacity: 1;
  transform: scale(1);
}

/* ============================================
   Stagger Animation Delays
   ============================================ */

.stagger-1 { animation-delay: 0.1s; transition-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; transition-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; transition-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; transition-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; transition-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; transition-delay: 0.6s; }

/* Stagger group - automatically applies delays to children */
.stagger-group > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-group.active > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-group.active > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-group.active > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-group.active > *:nth-child(4) { transition-delay: 0.4s; }
.stagger-group.active > *:nth-child(5) { transition-delay: 0.5s; }
.stagger-group.active > *:nth-child(6) { transition-delay: 0.6s; }
.stagger-group.active > *:nth-child(7) { transition-delay: 0.7s; }
.stagger-group.active > *:nth-child(8) { transition-delay: 0.8s; }

.stagger-group.active > * {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Hover Micro-interactions
   ============================================ */

.interactive {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.interactive:hover {
  transform: translateY(-2px);
}

.interactive-scale {
  transition: transform 0.2s ease;
}

.interactive-scale:hover {
  transform: scale(1.05);
}

.interactive-glow {
  transition: box-shadow 0.3s ease;
}

.interactive-glow:hover {
  box-shadow: 0 0 20px var(--accent-glow);
}

/* Button hover effects */
.btn {
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

/* ============================================
   Loading Animations
   ============================================ */

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.bounce {
  animation: bounce 1s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ============================================
   Page Transitions
   ============================================ */

.page-transition {
  animation: pageTransition 0.5s ease-out;
}

@keyframes pageTransition {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Reduced Motion Support
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }
  
  .stagger-group > * {
    opacity: 1;
    transform: none;
  }
}