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

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

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

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -10px, 0);
    }
    70% {
        transform: translate3d(0, -5px, 0);
    }
    90% {
        transform: translate3d(0, -2px, 0);
    }
}

@keyframes typewriter {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: #2563eb;
    }
}

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

@keyframes rotateIn {
    from {
        opacity: 0;
        transform: rotate(-200deg);
    }
    to {
        opacity: 1;
        transform: rotate(0deg);
    }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.3);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(100px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeInUp 1s ease-out;
}

.fade-in-left {
    animation: fadeInLeft 1s ease-out;
}

.fade-in-right {
    animation: fadeInRight 1s ease-out;
}

.slide-in-down {
    animation: slideInDown 0.8s ease-out;
}

.slide-in-up {
    animation: slideInUp 0.8s ease-out;
}

.zoom-in {
    animation: zoomIn 0.6s ease-out;
}

.rotate-in {
    animation: rotateIn 0.8s ease-out;
}

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

/* Intersection Observer Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll-left.animated {
    opacity: 1;
    transform: translateX(0);
}

.animate-on-scroll-right {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll-right.animated {
    opacity: 1;
    transform: translateX(0);
}

.animate-on-scroll-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.6s ease-out;
}

.animate-on-scroll-scale.animated {
    opacity: 1;
    transform: scale(1);
}

/* Staggered Animation Delays */
.animate-delay-1 {
    animation-delay: 0.1s;
}

.animate-delay-2 {
    animation-delay: 0.2s;
}

.animate-delay-3 {
    animation-delay: 0.3s;
}

.animate-delay-4 {
    animation-delay: 0.4s;
}

.animate-delay-5 {
    animation-delay: 0.5s;
}

.animate-delay-6 {
    animation-delay: 0.6s;
}

/* Hover Animations */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.hover-scale {
    transition: transform 0.3s ease;
}

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

.hover-rotate {
    transition: transform 0.3s ease;
}

.hover-rotate:hover {
    transform: rotate(5deg);
}

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

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
}

/* Loading Animations */
.loading-dots {
    display: inline-block;
}

.loading-dots::after {
    content: '';
    animation: dots 1.5s steps(5, end) infinite;
}

@keyframes dots {
    0%, 20% {
        color: rgba(0, 0, 0, 0);
        text-shadow: 0.25em 0 0 rgba(0, 0, 0, 0),
                     0.5em 0 0 rgba(0, 0, 0, 0);
    }
    40% {
        color: #2563eb;
        text-shadow: 0.25em 0 0 rgba(0, 0, 0, 0),
                     0.5em 0 0 rgba(0, 0, 0, 0);
    }
    60% {
        text-shadow: 0.25em 0 0 #2563eb,
                     0.5em 0 0 rgba(0, 0, 0, 0);
    }
    80%, 100% {
        text-shadow: 0.25em 0 0 #2563eb,
                     0.5em 0 0 #2563eb;
    }
}

/* Skill Bar Animation */
.skill-progress.animate {
    animation: skillBarFill 2s ease-in-out;
}

@keyframes skillBarFill {
    from {
        width: 0;
    }
}

/* Typing Animation for Hero */
.typing-animation {
    overflow: hidden;
    border-right: 3px solid #2563eb;
    white-space: nowrap;
    animation: typewriter 3s steps(40, end), blink 0.75s step-end infinite;
}

/* Gradient Background Animation */
.animated-gradient {
    background: linear-gradient(-45deg, #2563eb, #1d4ed8, #7c3aed, #059669);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

/* Particle Animation */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(37, 99, 235, 0.3);
    border-radius: 50%;
    animation: particleFloat 20s linear infinite;
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* Navbar Animation */
.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

/* Mobile Menu Animation */
.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Timeline Animation */
.timeline-item {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s ease-out;
}

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

.timeline-item:nth-child(even) {
    transform: translateX(50px);
}

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

/* Counter Animation */
.counter {
    transition: all 0.3s ease;
}

.counter.animate {
    animation: countUp 2s ease-out;
}

@keyframes countUp {
    from {
        transform: scale(0.5);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

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

.btn-ripple::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-ripple:active::before {
    width: 300px;
    height: 300px;
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, #2563eb, #7c3aed);
    z-index: 9999;
    transition: width 0.1s ease;
}

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

.text-reveal::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #2563eb;
    transform: translateX(-100%);
    animation: textReveal 1.5s ease-in-out;
}

@keyframes textReveal {
    0% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(0%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Smooth Transitions */
* {
    transition: color 0.3s ease, background-color 0.3s ease, border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

/* 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;
    }
    
    .geometric-shape {
        animation: none !important;
    }
    
    .typing-animation {
        animation: none !important;
        border-right: none !important;
    }
    
    .animated-gradient {
        animation: none !important;
    }
    
    .particle {
        animation: none !important;
    }
}

/* Performance Optimizations */
.will-change-transform {
    will-change: transform;
}

.will-change-opacity {
    will-change: opacity;
}

.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Focus Animations */
.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
    animation: focusPulse 0.6s ease-out;
}

@keyframes focusPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(37, 99, 235, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
    }
}

/* Loading State Animations */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

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

/* Entrance Animations for Different Elements */
.hero-title {
    animation: slideInDown 1s ease-out 0.2s both;
}

.hero-subtitle {
    animation: slideInDown 1s ease-out 0.4s both;
}

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

.hero-buttons {
    animation: fadeInUp 1s ease-out 0.8s both;
}

.geometric-shape {
    animation-fill-mode: both;
}

.shape-1 {
    animation-delay: 0.2s;
}

.shape-2 {
    animation-delay: 0.4s;
}

.shape-3 {
    animation-delay: 0.6s;
}