/* ===================================
   ANIMATIONS & KEYFRAMES
   Smooth Animations for Modern UI
   =================================== */

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

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

@keyframes fadeInDown {
    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);
    }
}

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

@keyframes scaleUp {
    from {
        transform: scale(1);
    }
    to {
        transform: scale(1.05);
    }
}

/* === Slide Animations === */
@keyframes slideInUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* === Bounce Animation === */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

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

/* === Pulse Animation === */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

/* === Shake Animation === */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-10px);
    }
    75% {
        transform: translateX(10px);
    }
}

/* === Rotate Animation === */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* === Gradient Animation === */
@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* === Shine Effect === */
@keyframes shine {
    0% {
        transform: translateX(-100%) translateY(-100%) rotate(45deg);
    }
    100% {
        transform: translateX(100%) translateY(100%) rotate(45deg);
    }
}

/* === Typing Animation === */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    50% {
        border-color: transparent;
    }
}

/* === Wave Animation === */
@keyframes wave {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* === Glow Animation === */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(37, 99, 235, 0.3),
                    0 0 10px rgba(37, 99, 235, 0.2);
    }
    50% {
        box-shadow: 0 0 20px rgba(37, 99, 235, 0.6),
                    0 0 30px rgba(37, 99, 235, 0.4);
    }
}

/* === Utility Classes === */
.animate-fadeIn {
    animation: fadeIn 1s ease;
}

.animate-fadeInUp {
    animation: fadeInUp 0.8s ease;
}

.animate-fadeInDown {
    animation: fadeInDown 0.8s ease;
}

.animate-fadeInLeft {
    animation: fadeInLeft 0.8s ease;
}

.animate-fadeInRight {
    animation: fadeInRight 0.8s ease;
}

.animate-scaleIn {
    animation: scaleIn 0.5s ease;
}

.animate-bounce {
    animation: bounce 2s infinite;
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

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

.animate-rotate {
    animation: rotate 20s linear infinite;
}

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

.hover-lift:hover {
    transform: translateY(-5px);
}

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

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

.hover-brightness {
    transition: filter 0.3s ease;
}

.hover-brightness:hover {
    filter: brightness(1.1);
}

/* === Stagger Animation Delays === */
.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

.delay-400 {
    animation-delay: 0.4s;
}

.delay-500 {
    animation-delay: 0.5s;
}

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

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

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

.spinner {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
}

/* === Progress Bar Animation === */
@keyframes progressBar {
    from {
        transform: scaleX(0);
        transform-origin: left;
    }
    to {
        transform: scaleX(1);
        transform-origin: left;
    }
}

.progress-animated {
    animation: progressBar 1.5s ease-out;
}

/* === Text Animation === */
@keyframes textShine {
    0% {
        background-position: -500%;
    }
    100% {
        background-position: 500%;
    }
}

.text-shine {
    background: linear-gradient(90deg, 
        var(--primary-color) 0%, 
        var(--secondary-color) 50%, 
        var(--primary-color) 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: textShine 3s linear infinite;
}

/* === Ripple Effect === */
@keyframes ripple {
    from {
        transform: scale(0);
        opacity: 1;
    }
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.ripple-effect {
    position: relative;
    overflow: hidden;
}

.ripple-effect::after {
    content: '';
    position: absolute;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: scale(0);
    opacity: 0;
}

.ripple-effect:active::after {
    animation: ripple 0.6s ease-out;
}

/* === Typewriter Effect === */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

@keyframes blink {
    50% {
        border-color: transparent;
    }
}

.typewriter {
    overflow: hidden;
    border-right: 3px solid;
    white-space: nowrap;
    animation: typing 3.5s steps(40, end), blink 0.75s step-end infinite;
}

/* === Parallax Effect === */
.parallax {
    transition: transform 0.1s ease-out;
}

/* === Reveal on Scroll (Fallback if AOS not loaded) === */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* === Particle Effect === */
@keyframes particle {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(calc(100vw - 100%));
        opacity: 0;
    }
}

.particle {
    animation: particle 10s linear infinite;
}

/* === Glow Effect === */
@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px var(--primary-color), 0 0 10px var(--primary-color);
    }
    50% {
        box-shadow: 0 0 10px var(--primary-color), 0 0 20px var(--primary-color), 0 0 30px var(--primary-color);
    }
}

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

/* === Accessibility: Respect Reduced Motion Preference === */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}