/* 动画样式文件 */

/* 文字渐入动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-text {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.animate-text:nth-child(1) {
    animation-delay: 0.2s;
}

.animate-text:nth-child(2) {
    animation-delay: 0.6s;
}

/* 页面过渡动画 */
@keyframes pageTransition {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-transition {
    animation: pageTransition 0.8s ease;
}

/* 菜单切换动画 */
.menu-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active .bar:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* 图片悬停动画 */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s infinite;
}

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

.btn-hover:after {
    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 0.7s;
}

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

/* 卡片翻转动画 */
.flip-card {
    perspective: 1000px;
}

.flip-card-inner {
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
    transform: rotateY(180deg);
}

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

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

/* 滚动显示动画 */
.fade-in-element {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-element.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 打字效果动画 */
.typing {
    overflow: hidden;
    border-right: 3px solid var(--accent-color);
    white-space: nowrap;
    margin: 0 auto;
    letter-spacing: 2px;
    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: var(--accent-color) }
}

/* 背景色渐变动画 */
.bg-gradient-animate {
    background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
}

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

/* 图标旋转动画 */
.rotate-icon {
    transition: transform 0.3s ease;
}

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

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

.hover-shadow:hover {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    transform: translateY(-5px);
}