/* 动画效果 */
@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(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

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

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

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(45deg);
    }
    40% {
        transform: translateY(-10px) rotate(45deg);
    }
    60% {
        transform: translateY(-5px) rotate(45deg);
    }
}

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

@keyframes pulse-light {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes slide {
    0%, 100% {
        transform: translateX(0);
    }
    50% {
        transform: translateX(10px);
    }
}

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

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

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

/* 应用动画的类 */
.fade-in {
    animation: fadeIn 1s ease-out;
}

.fade-in-up {
    animation: fadeInUp 1s ease-out;
}

.fade-in-down {
    animation: fadeInDown 1s ease-out;
}

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

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

.slide-in-left {
    animation: slideInLeft 1s ease-out;
}

.slide-in-right {
    animation: slideInRight 1s ease-out;
}

.slide-in-up {
    animation: slideInUp 1s ease-out;
}

.slide-in-down {
    animation: slideInDown 1s ease-out;
}

.pulse {
    animation: pulse 2s infinite;
}

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

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

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

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

/* 滚动触发动画 */
.reveal {
    position: relative;
    opacity: 0;
    transition: all 1s ease;
}

.reveal.active {
    opacity: 1;
}

.reveal-left {
    transform: translateX(-50px);
}

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

.reveal-right {
    transform: translateX(50px);
}

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

.reveal-up {
    transform: translateY(50px);
}

.reveal-up.active {
    transform: translateY(0);
}

.reveal-down {
    transform: translateY(-50px);
}

.reveal-down.active {
    transform: translateY(0);
}

.reveal-scale {
    transform: scale(0.9);
}

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

/* 悬停效果 */
.hover-lift {
    transition: transform 0.3s, box-shadow 0.3s;
}

.hover-lift:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

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

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

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

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

.hover-color-change {
    transition: color 0.3s, background-color 0.3s;
}

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

.hover-shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.hover-shimmer:hover::after {
    left: 100%;
}

/* 加载动画 */
.loading-spinner {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #4285f4;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

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

/* 进度条动画 */
.progress-animate {
    animation: progress 2s ease-in-out;
}

@keyframes progress {
    from { width: 0%; }
}

/* 打字机效果 */
.typewriter {
    overflow: hidden;
    border-right: .15em solid #4285f4;
    white-space: nowrap;
    margin: 0 auto;
    animation: typing 3.5s steps(40, end), blink-caret .75s step-end infinite;
}

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

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: #4285f4 }
}

/* 波浪效果 */
.wave {
    animation: wave-animation 2s infinite;
}

@keyframes wave-animation {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-10deg); }
    75% { transform: rotate(10deg); }
}

/* 页面过渡效果 */
.page-transition {
    animation: pageIn 0.5s ease;
}

@keyframes pageIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 弹跳进入效果 */
.bounce-in {
    animation: bounceIn 0.8s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

/* 闪烁效果 */
.blink {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* 摇晃效果 */
.shake {
    animation: shake 0.5s;
}

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

/* 心跳效果 */
.heartbeat {
    animation: heartbeat 1.5s infinite;
}

@keyframes heartbeat {
    0% { transform: scale(1); }
    5% { transform: scale(1.1); }
    10% { transform: scale(1); }
    15% { transform: scale(1.1); }
    20% { transform: scale(1); }
    100% { transform: scale(1); }
}

/* 3D翻转效果 */
.flip-container {
    perspective: 1000px;
}

.flipper {
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.flip-container:hover .flipper {
    transform: rotateY(180deg);
}

.front, .back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.back {
    transform: rotateY(180deg);
}