/* 动画效果样式 */

/* 页面加载动画 */
@keyframes fadeInUp {
    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);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

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

/* 滚动动画类 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll.fade-in-left {
    transform: translateX(-30px);
}

.animate-on-scroll.fade-in-left.animated {
    transform: translateX(0);
}

.animate-on-scroll.fade-in-right {
    transform: translateX(30px);
}

.animate-on-scroll.fade-in-right.animated {
    transform: translateX(0);
}

.animate-on-scroll.scale-in {
    transform: scale(0.8);
}

.animate-on-scroll.scale-in.animated {
    transform: scale(1);
}

/* 导航栏滚动效果 */
.navbar.scrolled {
    background: rgba(10, 10, 10, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3), 0 0 20px rgba(0, 212, 255, 0.1);
}

/* 按钮悬停动画 */
.btn {
    position: relative;
    overflow: hidden;
}

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

.btn:hover::before {
    left: 100%;
}

/* 卡片悬停动画 */
.feature-card,
.download-card {
    position: relative;
    overflow: hidden;
}

.feature-card::before,
.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.feature-card:hover::before,
.download-card:hover::before {
    opacity: 1;
}

.feature-card > *,
.download-card > * {
    position: relative;
    z-index: 2;
}

/* 图标旋转动画 */
.feature-icon i,
.download-icon i {
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon i,
.download-card:hover .download-icon i {
    transform: rotate(360deg);
}

/* 轮播动画 */
.carousel-slide {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-slide.slide-in {
    animation: slideInFromRight 0.5s ease;
}

.carousel-slide.slide-out {
    animation: slideOutToLeft 0.5s ease;
}

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

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

/* 视频播放按钮动画 */
.play-button {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(255, 255, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* 打字机效果 */
.typewriter {
    overflow: hidden;
    border-right: 2px solid #667eea;
    white-space: nowrap;
    animation: typing 3.5s 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: #667eea;
    }
}

/* 粒子动画 */
.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float-particle 6s ease-in-out infinite;
}

@keyframes float-particle {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.1;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.3;
    }
}

/* 进度条动画 */
.progress-bar {
    width: 0%;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* 表单验证动画 */
.form-group input:invalid,
.form-group textarea:invalid {
    border-color: #e74c3c;
    animation: shake 0.5s ease-in-out;
}

.form-group input:valid,
.form-group textarea:valid {
    border-color: #27ae60;
}

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

/* 成功提示动画 */
.success-message {
    background: #27ae60;
    color: white;
    padding: 15px 20px;
    border-radius: 10px;
    margin-top: 20px;
    animation: slideInDown 0.5s ease;
}

/* 错误提示动画 */
.error-message {
    background: #e74c3c;
    color: white;
    padding: 15px 20px;
    border-radius: 10px;
    margin-top: 20px;
    animation: slideInDown 0.5s ease;
}

/* 响应式动画调整 */
@media (max-width: 768px) {
    .animate-on-scroll {
        transform: translateY(20px);
    }
    
    .animate-on-scroll.fade-in-left,
    .animate-on-scroll.fade-in-right {
        transform: translateY(20px);
    }
    
    .animate-on-scroll.fade-in-left.animated,
    .animate-on-scroll.fade-in-right.animated {
        transform: translateY(0);
    }
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}