/* ============================================
   DESIGN ENHANCEMENTS
   Interactive Particles, 3D Tilt, Smooth Animations
   ============================================ */

/* ============================================
   1. PARTICLE CANVAS
   ============================================ */

#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  opacity: 0.9;
}

body.dark-mode #particles-canvas {
  opacity: 1;
}

/* ============================================
   2. 3D TILT ENHANCEMENTS
   ============================================ */

/* Ensure cards are ready for 3D transforms */
.project-card,
.bento-item,
.glass-card {
  transform-style: preserve-3d;
  will-change: transform;
  overflow: hidden;
  isolation: isolate;
}

/* Tilt glare effect */
.tilt-glare {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  pointer-events: none;
  z-index: 1;
  mix-blend-mode: overlay;
  overflow: hidden;
}

/* Inner content should be slightly elevated in 3D space */
.project-card .project-content,
.bento-item > *:not(.tilt-glare),
.glass-card > *:not(.tilt-glare) {
  transform: translateZ(20px);
  position: relative;
  z-index: 2;
}

.project-card .project-image-container {
  transform: translateZ(10px);
}

/* Enhanced shadows for 3D depth */
.project-card:hover,
.bento-item:hover,
.glass-card:hover {
  box-shadow: 
    0 30px 60px -12px rgba(0, 0, 0, 0.25),
    0 18px 36px -18px rgba(0, 0, 0, 0.3),
    0 0 40px rgba(99, 102, 241, 0.4);
}

/* ============================================
   3. SCROLL ANIMATIONS
   ============================================ */

/* Reveal animation base */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Reveal variants */
.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Scroll progress bar */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, #6366f1 0%, #06b6d4 100%);
  z-index: 9999;
  transition: width 0.1s ease;
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

/* ============================================
   4. ENHANCED HOVER EFFECTS
   ============================================ */

/* Magnetic button effect */
.btn-magnetic {
  position: relative;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

/* Ripple effect on click */
.btn {
  position: relative;
  overflow: hidden;
}

.btn::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 0.6s, height 0.6s;
}

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

/* ============================================
   5. PARALLAX ELEMENTS
   ============================================ */

[data-parallax] {
  will-change: transform;
  transition: transform 0.1s ease-out;
}

/* Parallax background layers */
.parallax-layer {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.parallax-layer-1 {
  transform: translateZ(-100px) scale(2);
}

.parallax-layer-2 {
  transform: translateZ(-50px) scale(1.5);
}

/* ============================================
   6. ENHANCED CARD INTERACTIONS
   ============================================ */

/* Card shine effect on hover */
.project-card::after,
.bento-item::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 70%
  );
  transform: translateX(-100%) translateY(-100%) rotate(45deg);
  transition: transform 0.6s;
  pointer-events: none;
  border-radius: inherit;
  overflow: hidden;
}

.project-card:hover::after,
.bento-item:hover::after {
  transform: translateX(100%) translateY(100%) rotate(45deg);
}

/* ============================================
   7. SMOOTH TRANSITIONS
   ============================================ */

/* Page transition overlay */
.page-transition {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, visibility 0.5s ease;
  pointer-events: none;
}

.page-transition.active {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   8. LOADING STATES
   ============================================ */

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

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

.skeleton-text {
  height: 1em;
  margin-bottom: 0.5em;
  border-radius: var(--radius-sm);
}

.skeleton-title {
  height: 2em;
  width: 70%;
  margin-bottom: 1em;
}

.skeleton-image {
  height: 200px;
  width: 100%;
  margin-bottom: 1em;
}

/* ============================================
   9. ENHANCED FOCUS STATES
   ============================================ */

/* Better focus indicators for accessibility */
*:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.btn:focus-visible,
.project-card:focus-visible,
.nav-link:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
}

/* ============================================
   10. MICRO-INTERACTIONS
   ============================================ */

/* Icon bounce on hover */
.icon-bounce:hover {
  animation: icon-bounce 0.6s ease;
}

@keyframes icon-bounce {
  0%, 100% {
    transform: translateY(0);
  }
  25% {
    transform: translateY(-10px);
  }
  50% {
    transform: translateY(-5px);
  }
  75% {
    transform: translateY(-7px);
  }
}

/* Pulse animation for important elements */
.pulse {
  animation: pulse-animation 2s ease-in-out infinite;
}

@keyframes pulse-animation {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

/* Shake animation for errors */
.shake {
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-10px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(10px);
  }
}

/* ============================================
   11. ENHANCED TYPOGRAPHY ANIMATIONS
   ============================================ */

/* Gradient text animation */
.gradient-text-animated {
  background: linear-gradient(
    90deg,
    #6366f1 0%,
    #06b6d4 25%,
    #10b981 50%,
    #ec4899 75%,
    #6366f1 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradient-flow 3s linear infinite;
}

@keyframes gradient-flow {
  0% {
    background-position: 0% center;
  }
  100% {
    background-position: 200% center;
  }
}

/* Text reveal animation */
.text-reveal {
  overflow: hidden;
  display: inline-block;
}

.text-reveal span {
  display: inline-block;
  opacity: 0;
  transform: translateY(100%);
  animation: text-reveal-animation 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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

/* ============================================
   12. PERFORMANCE OPTIMIZATIONS
   ============================================ */

/* GPU acceleration for animated elements */
.project-card,
.bento-item,
.glass-card,
.btn,
[data-parallax] {
  will-change: transform;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* Reduce motion for accessibility */
@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 !important;
    transform: none !important;
  }
  
  #particles-canvas {
    display: none;
  }
}

/* ============================================
   13. RESPONSIVE ENHANCEMENTS
   ============================================ */

@media (max-width: 768px) {
  /* Reduce 3D effects on mobile for performance */
  .project-card,
  .bento-item,
  .glass-card {
    transform-style: flat;
  }
  
  /* Simplify animations on mobile */
  .reveal,
  .reveal-left,
  .reveal-right {
    transform: translateY(20px);
  }
  
  /* Reduce particle count on mobile (handled in JS) */
  #particles-canvas {
    opacity: 0.4;
  }
}

@media (max-width: 480px) {
  .scroll-progress {
    height: 2px;
  }
}

/* ============================================
   14. DARK MODE ENHANCEMENTS
   ============================================ */

body.dark-mode .tilt-glare {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.1) 100%
  );
}

body.dark-mode .skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-tertiary) 25%,
    rgba(51, 65, 85, 0.5) 50%,
    var(--color-bg-tertiary) 75%
  );
  background-size: 200% 100%;
}

/* ============================================
   15. PRINT STYLES
   ============================================ */

@media print {
  #particles-canvas,
  .scroll-progress,
  .tilt-glare,
  .page-transition {
    display: none !important;
  }
  
  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1 !important;
    transform: none !important;
  }
}