/* ============================================
   Advanced Animations & Interactive Effects
   ============================================ */

/* Loading Skeleton */
.skeleton {
  background: linear-gradient(90deg, 
    var(--color-bg-secondary) 25%, 
    var(--color-bg-tertiary) 50%, 
    var(--color-bg-secondary) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--border-radius);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5rem;
}

.skeleton-image {
  width: 100%;
  height: 200px;
}

/* Scroll Progress Bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  z-index: var(--z-modal);
  transition: width var(--transition-base);
  box-shadow: 0 0 10px var(--color-accent);
}

/* Removed floating particles and cursor trail - too distracting */

/* 3D Card Tilt Effect */
.card-3d {
  transform-style: preserve-3d;
  transition: transform var(--transition-base);
}

.card-3d:hover {
  transform: perspective(1000px) rotateX(5deg) rotateY(5deg) scale(1.02);
}

/* Animated Gradient Background */
.animated-gradient {
  background: linear-gradient(-45deg, 
    var(--color-bg-secondary), 
    var(--color-bg-primary), 
    var(--color-bg-tertiary), 
    var(--color-bg-secondary)
  );
  background-size: 400% 400%;
  animation: gradient-shift 15s ease infinite;
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Glow Effect */
.glow-on-hover {
  position: relative;
  transition: all var(--transition-base);
}

.glow-on-hover::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  padding: 2px;
  background: linear-gradient(45deg, var(--color-accent), var(--color-accent-hover));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.glow-on-hover:hover::before {
  opacity: 1;
  animation: glow-pulse 2s infinite;
}

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

/* Magnetic Button Effect */
.magnetic-btn {
  position: relative;
  transition: transform var(--transition-slow);
}

.magnetic-btn:hover {
  transform: translateY(-4px);
}

/* Ripple Effect */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  transition: width var(--transition-slow), height var(--transition-slow);
}

.ripple:active::after {
  width: 300px;
  height: 300px;
}

/* Shimmer Effect */
.shimmer {
  position: relative;
  overflow: hidden;
}

.shimmer::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.2), 
    transparent
  );
  animation: shimmer-slide 2s infinite;
}

@keyframes shimmer-slide {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* Floating Animation */
.float {
  animation: float-up-down 3s ease-in-out infinite;
}

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

/* Pulse Animation */
.pulse {
  animation: pulse-scale 2s ease-in-out infinite;
}

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

/* Text Reveal Animation */
.text-reveal {
  overflow: hidden;
}

.text-reveal span {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  animation: text-reveal-up 0.6s ease forwards;
}

@keyframes text-reveal-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Counter Animation */
.counter {
  font-variant-numeric: tabular-nums;
}

/* Skill Bar Animation */
.skill-bar {
  width: 100%;
  height: 8px;
  background: var(--color-bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.skill-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  border-radius: 4px;
  width: 0;
  transition: width var(--transition-slow);
  position: relative;
  overflow: hidden;
}

.skill-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.3), 
    transparent
  );
  animation: shimmer-slide 2s infinite;
}

/* Page Transition */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg-primary);
  z-index: 9999;
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  pointer-events: none;
}

.page-transition.active {
  transform: translateX(0);
  pointer-events: all;
}

/* Glassmorphism Effect */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Removed morphing blob - too distracting */

/* Stagger Animation */
.stagger-item {
  opacity: 0;
  transform: translateY(30px);
  animation: stagger-fade-in 0.6s ease forwards;
}

@keyframes stagger-fade-in {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hover Lift Effect */
.hover-lift {
  transition: transform var(--transition-slow);
}

.hover-lift:hover {
  transform: translateY(-10px) scale(1.02);
}

/* Gradient Text Animation */
.gradient-text-animated {
  background: linear-gradient(90deg, 
    var(--color-accent), 
    var(--color-accent-hover), 
    var(--color-accent)
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-text-shift 3s linear infinite;
}

@keyframes gradient-text-shift {
  to { background-position: 200% center; }
}

/* Loading Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-bg-tertiary);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Fade In Scale */
.fade-in-scale {
  animation: fade-in-scale 0.6s ease-out;
}

@keyframes fade-in-scale {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}