/* 
 * 动画效果样式表
 * 参考Poppr网站风格 (https://www.poppr.be/en)
 */

/* 淡入效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 1s ease forwards;
}

/* 从下方滑入 */
@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.slide-up {
    animation: slideUp 0.8s ease forwards;
}

/* 从左侧滑入 */
@keyframes slideRight {
    from {
        transform: translateX(-50px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.slide-right {
    animation: slideRight 0.8s ease forwards;
}

/* 从右侧滑入 */
@keyframes slideLeft {
    from {
        transform: translateX(50px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.slide-left {
    animation: slideLeft 0.8s ease forwards;
}

/* 放大效果 */
@keyframes scaleUp {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.scale-up {
    animation: scaleUp 0.8s ease forwards;
}

/* 旋转效果 */
@keyframes rotate {
    from {
        transform: rotate(-10deg) scale(0.9);
        opacity: 0;
    }
    to {
        transform: rotate(0) scale(1);
        opacity: 1;
    }
}

.rotate {
    animation: rotate 0.8s ease forwards;
}

/* 滚动触发的动画类 */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-up {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* 页面加载动画 */
.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-bg);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-medium-gray);
    border-top: 3px solid var(--color-text);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 鼠标悬停效果 */
.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-10px);
}

/* 闪烁效果 */
@keyframes blink {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.blink {
    animation: blink 2s ease infinite;
}

/* 脉冲效果 */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s ease infinite;
}

/* 视差滚动效果 */
.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

/* 导航菜单动画 */
.hamburger span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-text);
    margin: 5px 0;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
    z-index: 1000;
}

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

.mobile-menu ul {
    text-align: center;
}

.mobile-menu li {
    margin: 20px 0;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.5s ease;
    transition-delay: calc(0.1s * var(--i));
}

.mobile-menu.active li {
    transform: translateY(0);
    opacity: 1;
}

/* 图片悬停效果 */
.hover-zoom {
    overflow: hidden;
}

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

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

/* 文字渐变动画 */
@keyframes textGradient {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.text-gradient {
    background: linear-gradient(45deg, #000, #333, #666, #333, #000);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: textGradient 5s ease infinite;
}

/* 打字机效果 */
@keyframes typing {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

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

.typewriter {
    overflow: hidden;
    white-space: nowrap;
    border-right: 2px solid var(--color-text);
    animation: 
        typing 3.5s steps(40, end),
        blink-caret 0.75s step-end infinite;
}