/* Animation Keyframes */
@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    33% {
        transform: translateY(-20px) rotate(1deg);
    }
    66% {
        transform: translateY(-10px) rotate(-1deg);
    }
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(99, 102, 241, 0.6);
    }
}

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

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

@keyframes ripple {
    0% {
        transform: scale(0);
        opacity: 0.6;
    }
    100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* Animation Classes */
.animate-fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out forwards;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.8s ease-out forwards;
}

.animate-fade-in-right {
    animation: fadeInRight 0.8s ease-out forwards;
}

.animate-slide-in-top {
    animation: slideInFromTop 0.8s ease-out forwards;
}

.animate-slide-in-bottom {
    animation: slideInFromBottom 0.8s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.6s ease-out forwards;
}

.animate-bounce-in {
    animation: bounceIn 0.8s ease-out forwards;
}

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

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

.animate-gradient {
    background-size: 400% 400%;
    animation: gradientShift 3s ease infinite;
}

.animate-shake {
    animation: shake 0.8s cubic-bezier(0.36, 0.07, 0.19, 0.97);
}

/* Staggered Animation Classes */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; }

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

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.3);
}

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

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

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

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.4);
}

.hover-gradient {
    position: relative;
    overflow: hidden;
}

.hover-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.hover-gradient:hover::before {
    left: 100%;
}

/* Intersection Observer Animation States */
.hidden {
    opacity: 0;
    transform: translateY(50px);
}

.visible {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Loading States */
.loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-color);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* Text Animation */
.typewriter {
    overflow: hidden;
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    animation: typing 3s steps(40, end), blink-caret 0.75s step-end infinite;
}

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

@keyframes blink-caret {
    from, to {
        border-color: transparent;
    }
    50% {
        border-color: var(--primary-color);
    }
}

/* Particle Animation */
.particle {
    position: absolute;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.7;
    animation: particle-float 4s linear infinite;
}

@keyframes particle-float {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 0.7;
    }
    90% {
        opacity: 0.7;
    }
    100% {
        transform: translateY(-100px) scale(1);
        opacity: 0;
    }
}

/* Mobile-specific animations */
@media (max-width: 768px) {
    .animate-fade-in,
    .animate-fade-in-up,
    .animate-fade-in-left,
    .animate-fade-in-right {
        animation-duration: 0.6s;
    }
    
    .floating-element {
        animation-duration: 4s;
    }
    
    .hover-lift:hover {
        transform: translateY(-4px);
    }
}

/* Reduced motion preferences */
@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;
    }
    
    .floating-element {
        animation: none;
    }
    
    .animate-gradient {
        animation: none;
    }
    
    .animate-pulse {
        animation: none;
    }
}

/* Smooth scrolling for better UX */
html {
    scroll-behavior: smooth;
}

/* Focus animations for accessibility */
.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    animation: pulse 1s ease-in-out;
}

/* Success/Error state animations */
.success-state {
    animation: bounceIn 0.6s ease-out;
}

.error-state {
    animation: shake 0.6s ease-out;
}

/* Loading skeleton animation */
.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-glass) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: loading-skeleton 1.5s infinite;
}

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

/* Progress bar animation */
.progress-bar {
    position: relative;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    transition: width 0.8s ease;
    position: relative;
}

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

@keyframes progress-shimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}