/* ===============================================
   Apple-Style Micro Animations
   =============================================== */

/* Fade In Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

    to {
        transform: scale(1.05);
    }
}

/* Pulse Animation */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.7;
        transform: scale(1.1);
    }
}

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

    100% {
        background-position: 1000px 0;
    }
}

.shimmer {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}

/* Number Count Up */
@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

.gradient-animated {
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
}

/* Floating Animation */
@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.float {
    animation: float 3s ease-in-out infinite;
}

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

    to {
        transform: rotate(360deg);
    }
}

/* Bounce Animation */
@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

/* Wiggle Animation */
@keyframes wiggle {

    0%,
    100% {
        transform: rotate(0deg);
    }

    25% {
        transform: rotate(-5deg);
    }

    75% {
        transform: rotate(5deg);
    }
}

/* Glow Effect */
@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);
    }
}

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

/* Reveal Animation (for scroll) */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.6s 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 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Stagger Animation Delays */
.stagger-1 {
    animation-delay: 0.1s;
    transition-delay: 0.1s;
}

.stagger-2 {
    animation-delay: 0.2s;
    transition-delay: 0.2s;
}

.stagger-3 {
    animation-delay: 0.3s;
    transition-delay: 0.3s;
}

.stagger-4 {
    animation-delay: 0.4s;
    transition-delay: 0.4s;
}

.stagger-5 {
    animation-delay: 0.5s;
    transition-delay: 0.5s;
}

/* Hover Effects */
.hover-lift {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-8px);
}

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

.hover-glow:hover {
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.3);
}

.hover-scale {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Button Loading State */
@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

.btn-loading::after {
    content: '';
    width: 16px;
    height: 16px;
    margin-left: 8px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    display: inline-block;
    animation: spinner 0.6s linear infinite;
}

/* Progress Bar */
@keyframes progress {
    from {
        width: 0%;
    }
}

.progress-bar {
    height: 4px;
    background: var(--primary);
    animation: progress 2s ease-out;
}

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

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

.ripple-effect::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: scale(0);
    opacity: 0;
    pointer-events: none;
}

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

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

.text-reveal::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    transform: translateX(-100%);
}

.text-reveal.active::after {
    animation: textReveal 1s cubic-bezier(0.77, 0, 0.175, 1);
}

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

    50% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(100%);
    }
}

/* Particle Effect (背景装饰) */
@keyframes particleFloat {

    0%,
    100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(99, 102, 241, 0.5);
    border-radius: 50%;
    animation: particleFloat 15s linear infinite;
}

/* Flash Message Animation */
@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.flash-message {
    position: fixed;
    top: 90px;
    left: 50%;
    transform: translateX(-50%);
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 500;
    z-index: 9999;
    animation: slideDown 0.3s ease-out;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.flash-success {
    background: var(--apple-green);
    color: white;
}

.flash-error {
    background: var(--apple-red);
    color: white;
}

.flash-warning {
    background: var(--apple-orange);
    color: white;
}

.flash-info {
    background: var(--apple-blue);
    color: white;
}

/* Loading Skeleton */
@keyframes skeleton {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.skeleton {
    background: linear-gradient(90deg,
            var(--gray-200) 25%,
            var(--gray-100) 50%,
            var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: skeleton 1.5s ease-in-out infinite;
    border-radius: 8px;
}