/* ============= KEYFRAME ANIMATIONS ============= */

/* Glow pulse effect */
@keyframes glow-pulse {
  0%, 100% {
    text-shadow: 0 0 10px var(--neon-cyan),
                 0 0 20px var(--neon-cyan),
                 0 0 30px var(--neon-blue);
  }
  50% {
    text-shadow: 0 0 20px var(--neon-cyan),
                 0 0 40px var(--neon-cyan),
                 0 0 60px var(--neon-blue),
                 0 0 80px var(--neon-purple);
  }
}

/* Typewriter cursor blink */
@keyframes blink {
  0%, 50% {
    opacity: 1;
  }
  51%, 100% {
    opacity: 0;
  }
}

/* Rotating ring around profile */
@keyframes rotate-ring {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Pulsing dot animation */
@keyframes pulse-dot {
  0%, 100% {
    transform: translateX(-50%) scale(1);
    box-shadow: 0 0 10px var(--neon-cyan),
                0 0 20px var(--neon-cyan);
  }
  50% {
    transform: translateX(-50%) scale(1.2);
    box-shadow: 0 0 20px var(--neon-cyan),
                0 0 40px var(--neon-cyan),
                0 0 60px var(--neon-blue);
  }
}

/* Glitch effect for hero title */
@keyframes glitch {
  0% {
    text-shadow: 0.05em 0 0 rgba(255, 0, 0, 0.75),
                -0.05em -0.025em 0 rgba(0, 255, 0, 0.75),
                -0.025em 0.05em 0 rgba(0, 0, 255, 0.75);
  }
  14% {
    text-shadow: 0.05em 0 0 rgba(255, 0, 0, 0.75),
                -0.05em -0.025em 0 rgba(0, 255, 0, 0.75),
                -0.025em 0.05em 0 rgba(0, 0, 255, 0.75);
  }
  15% {
    text-shadow: -0.05em -0.025em 0 rgba(255, 0, 0, 0.75),
                0.025em 0.025em 0 rgba(0, 255, 0, 0.75),
                -0.05em -0.05em 0 rgba(0, 0, 255, 0.75);
  }
  49% {
    text-shadow: -0.05em -0.025em 0 rgba(255, 0, 0, 0.75),
                0.025em 0.025em 0 rgba(0, 255, 0, 0.75),
                -0.05em -0.05em 0 rgba(0, 0, 255, 0.75);
  }
  50% {
    text-shadow: 0.025em 0.05em 0 rgba(255, 0, 0, 0.75),
                0.05em 0 0 rgba(0, 255, 0, 0.75),
                0 -0.05em 0 rgba(0, 0, 255, 0.75);
  }
  99% {
    text-shadow: 0.025em 0.05em 0 rgba(255, 0, 0, 0.75),
                0.05em 0 0 rgba(0, 255, 0, 0.75),
                0 -0.05em 0 rgba(0, 0, 255, 0.75);
  }
  100% {
    text-shadow: -0.025em 0 0 rgba(255, 0, 0, 0.75),
                -0.025em -0.025em 0 rgba(0, 255, 0, 0.75),
                -0.025em -0.05em 0 rgba(0, 0, 255, 0.75);
  }
}

/* Floating animation */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Fade in up */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Fade in down */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Zoom in */
@keyframes zoomIn {
  from {
    opacity: 0;
    transform: scale(0.5);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Slide in from left */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Slide in from right */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(100px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Border glow animation */
@keyframes border-glow {
  0%, 100% {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px var(--neon-cyan);
  }
  50% {
    border-color: var(--neon-blue);
    box-shadow: 0 0 20px var(--neon-blue),
                0 0 40px var(--neon-cyan);
  }
}

/* Shimmer effect */
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

/* Heartbeat */
@keyframes heartbeat {
  0%, 100% {
    transform: scale(1);
  }
  25% {
    transform: scale(1.2);
  }
  50% {
    transform: scale(1);
  }
}

/* Spin */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Neon flicker */
@keyframes flicker {
  0%, 18%, 22%, 25%, 53%, 57%, 100% {
    text-shadow: 0 0 10px var(--neon-cyan),
                 0 0 20px var(--neon-cyan),
                 0 0 30px var(--neon-blue);
  }
  20%, 24%, 55% {
    text-shadow: none;
  }
}

/* Wave animation */
@keyframes wave {
  0%, 100% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(10deg);
  }
  75% {
    transform: rotate(-10deg);
  }
}

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

/* Bounce */
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-20px);
  }
  60% {
    transform: translateY(-10px);
  }
}

/* ============= APPLIED ANIMATIONS ============= */

/* Glitch effect on hero title */
.glitch {
  animation: glitch 5s infinite;
  position: relative;
}

.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.8;
}

.glitch::before {
  animation: glitch 2.5s infinite;
  clip-path: polygon(0 0, 100% 0, 100% 45%, 0 45%);
  transform: translate(-0.025em, -0.0125em);
}

.glitch::after {
  animation: glitch 3s infinite reverse;
  clip-path: polygon(0 80%, 100% 20%, 100% 100%, 0 100%);
  transform: translate(0.0125em, 0.025em);
}

/* Navbar scroll effect */
.navbar {
  animation: fadeInDown 1s ease;
}

/* Hero elements animation */
.hero-content h1 {
  animation: fadeInDown 1s ease 0.2s both;
}

.typewriter-container {
  animation: fadeInUp 1s ease 0.4s both;
}

.hero-btns {
  animation: fadeInUp 1s ease 0.6s both;
}

/* Profile image animations */
.profile-img img {
  animation: zoomIn 1s ease, float 4s ease-in-out infinite 1s;
}

/* Skill items stagger */
.skill-item:nth-child(1) { animation-delay: 0.1s; }
.skill-item:nth-child(2) { animation-delay: 0.2s; }
.skill-item:nth-child(3) { animation-delay: 0.3s; }
.skill-item:nth-child(4) { animation-delay: 0.4s; }
.skill-item:nth-child(5) { animation-delay: 0.5s; }
.skill-item:nth-child(6) { animation-delay: 0.6s; }

/* Button hover animations */
.neon-btn {
  animation: scale-pulse 2s infinite;
}

.neon-btn:hover {
  animation: none;
}

/* Section title animation */
.section-title {
  animation: fadeInDown 1s ease;
}

.section-title::after {
  animation: shimmer 3s infinite;
}

/* Timeline animations handled by AOS */
.timeline-item {
  transition: all 0.4s ease;
}

/* Project card hover effects */
.project-card {
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Social icon animations */
.social-icon {
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Fact items entrance */
.fact-item {
  animation: slideInLeft 0.6s ease;
}

.fact-item:nth-child(1) { animation-delay: 0.1s; }
.fact-item:nth-child(2) { animation-delay: 0.2s; }
.fact-item:nth-child(3) { animation-delay: 0.3s; }

/* Form input focus animation */
.contact-form input:focus,
.contact-form textarea:focus {
  animation: border-glow 2s infinite;
}

/* Scroll to top button */
.scroll-top {
  animation: bounce 2s infinite;
}

.scroll-top:hover {
  animation: none;
}

/* Loading animation */
@keyframes loading {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Star twinkle (for particles) */
@keyframes twinkle {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

/* Glow ring around elements */
.glow-ring {
  animation: rotate-ring 10s linear infinite, scale-pulse 3s infinite;
}

/* Timeline dot pulse */
.timeline-dot {
  animation: pulse-dot 2s infinite;
}

/* Nav link active state */
.nav-link.active {
  color: var(--neon-cyan);
  text-shadow: var(--glow-sm);
}

/* Hover glow effect for cards */
.glass-card {
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.glass-card:hover {
  animation: border-glow 2s infinite;
}

/* ============= RESPONSIVE ANIMATIONS ============= */
@media (max-width: 768px) {
  /* Reduce animation complexity on mobile */
  .glitch::before,
  .glitch::after {
    display: none;
  }
  
  .profile-img img {
    animation: zoomIn 1s ease;
  }
  
  .neon-btn {
    animation: none;
  }
  
  .scroll-top {
    animation: none;
  }
}

/* ============= ACCESSIBILITY - PREFERS REDUCED MOTION ============= */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============= TRANSITION UTILITIES ============= */
.transition-fast {
  transition: all 0.2s ease;
}

.transition-normal {
  transition: all 0.4s ease;
}

.transition-slow {
  transition: all 0.8s ease;
}

.transition-bounce {
  transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ============= ENTRANCE ANIMATIONS FOR AOS ============= */
[data-aos="fade-up"] {
  transform: translateY(50px);
  opacity: 0;
}

[data-aos="fade-up"].aos-animate {
  transform: translateY(0);
  opacity: 1;
}

[data-aos="fade-down"] {
  transform: translateY(-50px);
  opacity: 0;
}

[data-aos="fade-down"].aos-animate {
  transform: translateY(0);
  opacity: 1;
}

[data-aos="zoom-in"] {
  transform: scale(0.8);
  opacity: 0;
}

[data-aos="zoom-in"].aos-animate {
  transform: scale(1);
  opacity: 1;
}

[data-aos="fade-left"] {
  transform: translateX(50px);
  opacity: 0;
}

[data-aos="fade-left"].aos-animate {
  transform: translateX(0);
  opacity: 1;
}

[data-aos="fade-right"] {
  transform: translateX(-50px);
  opacity: 0;
}

[data-aos="fade-right"].aos-animate {
  transform: translateX(0);
  opacity: 1;
}

/* ============= SPECIAL EFFECTS ============= */

/* Neon text glow */
.neon-text {
  animation: glow-pulse 3s infinite;
}

/* Flicker effect */
.flicker-text {
  animation: flicker 5s infinite;
}

/* Floating elements */
.float-element {
  animation: float 3s ease-in-out infinite;
}

/* Rotating elements */
.rotate-element {
  animation: spin 20s linear infinite;
}

/* Pulsing elements */
.pulse-element {
  animation: scale-pulse 2s infinite;
}