/* ==========================================================================
   Beijing Yushu Technology Co., Ltd. - Animations
   ========================================================================== */

/* ==========================================================================
   Keyframe Animations
   ========================================================================== */

/* Float Animation */
@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-30px) rotate(5deg);
    }
}

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

/* Phone Float */
@keyframes phoneFloat {
    0%, 100% {
        transform: translateY(0) rotateY(0deg);
    }
    25% {
        transform: translateY(-15px) rotateY(2deg);
    }
    75% {
        transform: translateY(-10px) rotateY(-2deg);
    }
}

/* App Float */
@keyframes appFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-25px);
    }
}

/* Card Float */
@keyframes cardFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    33% {
        transform: translateY(-10px) rotate(2deg);
    }
    66% {
        transform: translateY(-5px) rotate(-1deg);
    }
}

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

/* Glow Pulse */
@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 105, 0, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(255, 105, 0, 0.6);
    }
}

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

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

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

/* Fade In Up */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In Down */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade In Left */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Fade In Right */
@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

/* Wave */
@keyframes wave {
    0%, 100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(20deg);
    }
    75% {
        transform: rotate(-20deg);
    }
}

/* Ripple */
@keyframes ripple {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

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

/* Slide Indicator */
@keyframes slideIndicator {
    0% {
        width: 0;
    }
    100% {
        width: 100%;
    }
}

/* Progress Bar */
@keyframes progressBar {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

/* Counter */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Blink */
@keyframes blink {
    0%, 50%, 100% {
        opacity: 1;
    }
    25%, 75% {
        opacity: 0;
    }
}

/* Shimmer */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* Breathe */
@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        transform: scale(1.1);
        opacity: 1;
    }
}

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

/* Flip */
@keyframes flip {
    0% {
        transform: perspective(400px) rotateY(0);
    }
    100% {
        transform: perspective(400px) rotateY(360deg);
    }
}

/* ==========================================================================
   Animation Classes
   ========================================================================== */

/* Default Animations */
.animate-float {
    animation: float 6s ease-in-out infinite;
}

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

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

.animate-spin {
    animation: spin 2s linear infinite;
}

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

.animate-wave {
    animation: wave 1s ease-in-out infinite;
}

.animate-shimmer {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Fade Animations */
.animate-fadeIn {
    animation: fadeIn 0.6s ease-out forwards;
}

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

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

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

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

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

/* Delay Classes */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }
.delay-900 { animation-delay: 900ms; }
.delay-1000 { animation-delay: 1000ms; }

/* ==========================================================================
   Scroll Reveal Animations
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

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

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

.reveal-rotate {
    opacity: 0;
    transform: rotate(-10deg);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

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

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

.hover-grow:hover {
    transform: scale(1.1);
}

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

.hover-shake:hover {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

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

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

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

.hover-flip:hover {
    transform: perspective(500px) rotateY(15deg);
}

/* ==========================================================================
   Button Animations
   ========================================================================== */
.btn-hover-fill {
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-hover-fill::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-hover-fill:hover::before {
    left: 0;
}

.btn-hover-expand {
    position: relative;
    overflow: hidden;
}

.btn-hover-expand::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn-hover-expand:hover::after {
    width: 300px;
    height: 300px;
}

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

.btn-ripple .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: scale(0);
    animation: ripple 0.6s linear;
    pointer-events: none;
}

/* ==========================================================================
   Navigation Animations
   ========================================================================== */
.nav-link-animated {
    position: relative;
}

.nav-link-animated::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease, left 0.3s ease;
}

.nav-link-animated:hover::after,
.nav-link-animated.active::after {
    width: 100%;
    left: 0;
}

.nav-item-stagger {
    opacity: 0;
    transform: translateY(-20px);
    animation: fadeInDown 0.5s ease forwards;
}

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

/* ==========================================================================
   Card Animations
   ========================================================================== */
.card-hover-effect {
    position: relative;
    overflow: hidden;
}

.card-hover-effect::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.card-hover-effect:hover::before {
    left: 150%;
}

.card-icon-rotate {
    transition: transform 0.5s ease;
}

.card-hover-effect:hover .card-icon-rotate {
    transform: rotate(360deg);
}

.card-3d {
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.card-3d:hover {
    transform: perspective(1000px) rotateY(5deg) rotateX(5deg);
}

/* ==========================================================================
   Image Animations
   ========================================================================== */
.img-zoom {
    overflow: hidden;
}

.img-zoom img {
    transition: transform 0.5s ease;
}

.img-zoom:hover img {
    transform: scale(1.1);
}

.img-parallax {
    transition: transform 0.1s linear;
}

/* ==========================================================================
   Text Animations
   ========================================================================== */
.text-reveal {
    overflow: hidden;
}

.text-reveal span {
    display: inline-block;
    transform: translateY(100%);
    animation: slideUp 0.5s ease forwards;
}

.text-typing {
    overflow: hidden;
    border-right: 2px solid var(--primary-color);
    white-space: nowrap;
    animation: typing 3s steps(40) 1s forwards, blink 0.75s step-end infinite;
}

.text-gradient-animate {
    background: linear-gradient(90deg, var(--primary-color), var(--accent-blue), var(--primary-color));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s linear infinite;
}

/* ==========================================================================
   Loading Animations
   ========================================================================== */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-dots {
    display: flex;
    gap: 8px;
}

.loading-dots span {
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
.loading-dots span:nth-child(3) { animation-delay: 0; }

.loading-pulse {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    position: relative;
    overflow: hidden;
}

.loading-pulse::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 30%;
    height: 100%;
    background: var(--primary-color);
    animation: progressBar 1.5s ease-in-out infinite;
}

/* ==========================================================================
   Scroll Progress Indicator
   ========================================================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: var(--primary-gradient);
    z-index: 9999;
    transition: width 0.1s linear;
}

/* ==========================================================================
   Parallax Effects
   ========================================================================== */
.parallax-slow {
    transform: translateY(calc(var(--scroll-y, 0) * 0.3px));
}

.parallax-medium {
    transform: translateY(calc(var(--scroll-y, 0) * 0.5px));
}

.parallax-fast {
    transform: translateY(calc(var(--scroll-y, 0) * 0.8px));
}

/* ==========================================================================
   Stagger Animation
   ========================================================================== */
.stagger-item {
    opacity: 0;
    transform: translateY(30px);
}

.stagger-item.active {
    animation: fadeInUp 0.6s ease forwards;
}

.stagger-container .stagger-item:nth-child(1) { animation-delay: 0.1s; }
.stagger-container .stagger-item:nth-child(2) { animation-delay: 0.2s; }
.stagger-container .stagger-item:nth-child(3) { animation-delay: 0.3s; }
.stagger-container .stagger-item:nth-child(4) { animation-delay: 0.4s; }
.stagger-container .stagger-item:nth-child(5) { animation-delay: 0.5s; }
.stagger-container .stagger-item:nth-child(6) { animation-delay: 0.6s; }
.stagger-container .stagger-item:nth-child(7) { animation-delay: 0.7s; }
.stagger-container .stagger-item:nth-child(8) { animation-delay: 0.8s; }

/* ==========================================================================
   Mobile Menu Animations
   ========================================================================== */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: var(--z-index-fixed);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100%;
    background: white;
    transition: right 0.3s ease;
    z-index: calc(var(--z-index-fixed) + 1);
    padding: var(--spacing-2xl);
    overflow-y: auto;
}

.mobile-menu.active {
    right: 0;
}

/* ==========================================================================
   Page Transition
   ========================================================================== */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    transform: translateX(-100%);
    z-index: 9999;
}

.page-transition.active {
    animation: slideIn 0.5s ease forwards;
}

@keyframes slideIn {
    to {
        transform: translateX(0);
    }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-scale,
    .reveal-rotate {
        opacity: 1;
        transform: none;
    }
}