/* 主样式文件 - 优化性能和兼容性 */
:root {
    --day-bg: linear-gradient(120deg, #89f7fe 0%, #66a6ff 100%);
    --night-bg: linear-gradient(120deg, #434343 0%, #000000 100%);
    --day-text: #333;
    --night-text: #fff;
    --transition: all 0.5s ease;
    --highlight-color: #66a6ff;
    --highlight-color-night: #89f7fe;
}

body {
    margin: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Roboto', sans-serif;
    min-height: 100vh;
    background-size: 200% 200%; /* 减少背景尺寸，提高性能 */
    animation: gradientBG 20s ease infinite; /* 延长动画时间，减少CPU使用 */
    color: var(--day-text);
    transition: var(--transition);
    background: var(--day-bg);
    /* 优化字体渲染 */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* 优化渲染性能 */
    will-change: background, color;
}

/* 页面头部样式 */
.page-header {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    will-change: transform, backdrop-filter;
    opacity: 0;
    transform: translateY(-20px);
    animation: slideDown 0.8s ease-out 0.5s forwards;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(102, 166, 255, 0.1), transparent);
    transition: left 0.8s ease;
}

.page-header:hover::before {
    left: 100%;
}

.header-icon {
    font-size: 4rem;
    color: var(--highlight-color);
    animation: float 3s ease-in-out infinite;
    will-change: transform;
}

.header-content {
    flex: 1;
}

.page-title {
    font-size: 3rem;
    margin: 0 0 0.5rem 0;
    background: linear-gradient(135deg, var(--highlight-color), #66a6ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.page-subtitle {
    font-size: 1.2rem;
    margin: 0 0 1rem 0;
    color: var(--day-text);
    opacity: 0.8;
}

.version-badge {
    display: flex;
    gap: 0.5rem;
}

.badge {
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge.project {
    background: linear-gradient(135deg, var(--highlight-color), #66a6ff);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.badge.version {
    background: rgba(102, 166, 255, 0.1);
    color: var(--highlight-color);
    border: 2px solid rgba(102, 166, 255, 0.3);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
        padding: 1.5rem;
    }
    
    .header-icon {
        font-size: 3rem;
    }
    
    .page-title {
        font-size: 2rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .version-badge {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .page-header {
        padding: 1rem;
    }
    
    .header-icon {
        font-size: 2.5rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .badge {
        font-size: 0.8rem;
        padding: 0.2rem 0.6rem;
    }
}

body.night {
    background: var(--night-bg);
    color: var(--night-text);
}

.header {
    text-align: center;
    padding: 2rem;
    background-color: rgba(102, 166, 255, 0.3); /* 修改为浅蓝色半透明背景 */
    color: #ffffff;
    opacity: 0;
    transform: translateY(-20px);
    animation: slideDown 0.8s ease-out 0.5s forwards;
    border-radius: 15px; /* 添加圆角 */
    max-width: 80%; /* 添加此行，将标题宽度调整为80% */
    margin: 0 auto; /* 添加此行，使标题居中 */
    /* 优化渲染性能 */
    will-change: transform, opacity;
    transform: translateZ(0);
}

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

.logo {
    width: 100px;
    height: 100px;
    margin: 1rem 0;
    animation: rotateLogo 2s ease-in-out 1, breathingLogo 4s ease-in-out infinite; /* 延长呼吸动画时间 */
    /* 优化渲染性能 */
    will-change: transform;
    transform: translateZ(0);
}

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

@keyframes breathingLogo {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05); /* 减少缩放幅度，提高性能 */
    }
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s forwards;
    /* 优化渲染性能 */
    will-change: transform, opacity;
}

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

.section {
    background: rgba(137, 247, 254, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: breathingSection 4s ease-in-out infinite; /* 延长动画时间 */
    /* 优化渲染性能 */
    will-change: transform, box-shadow;
    transform: translateZ(0);
}

.section:hover {
    transform: translateY(-3px); /* 减少移动距离，提高性能 */
    box-shadow: 0 10px 20px rgba(0,0,0,0.15); /* 简化阴影效果 */
}

.feature {
    flex: 1 1 30%;
    margin: 1rem;
    padding: 1rem;
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: breathingFeature 4s ease-in-out infinite; /* 延长动画时间 */
    /* 优化渲染性能 */
    will-change: transform, box-shadow;
    transform: translateZ(0);
}

.feature:hover {
    transform: translateY(-3px); /* 减少移动距离，提高性能 */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15); /* 简化阴影效果 */
}

.features {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.footer {
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 4rem;
    background-color: rgba(102, 166, 255, 0.3);
    color: #ffffff;
    opacity: 0;
    animation: fadeIn 1s ease-out 1.5s forwards;
    border-radius: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
    /* 优化渲染性能 */
    will-change: transform, box-shadow, background-color;
    transform: translateZ(0);
}

.footer:hover {
    transform: translateY(-3px); /* 减少移动距离，提高性能 */
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15); /* 简化阴影效果 */
    background-color: rgba(102, 166, 255, 0.35);
}

.footer::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 0.8s ease; /* 延长过渡时间，减少CPU使用 */
}

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

.footer a {
    opacity: 0;
    transform: translateY(20px);
    animation: float 4s ease-in-out infinite; /* 延长动画时间 */
    transition: opacity 1s ease, transform 1s ease, color 0.3s ease;
    color: #ffffff;
    text-decoration: none;
    font-weight: bold;
    position: relative;
    /* 优化渲染性能 */
    will-change: transform, opacity;
}

.footer a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--highlight-color);
    transition: width 0.3s ease;
}

.footer a:hover {
    color: var(--highlight-color);
}

.footer a:hover::after {
    width: 100%;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px); /* 减少浮动幅度，提高性能 */
    }
}

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

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

/* 媒体查询优化 - 响应式设计 */
@media (max-width: 768px) {
    .header {
        padding: 1.5rem;
        max-width: 90%;
    }
    
    .logo {
        width: 80px;
        height: 80px;
    }
    
    .container {
        padding: 30px 15px;
    }
    
    .section {
        padding: 1.5rem;
        margin: 1.5rem 0;
    }
    
    .feature {
        flex: 1 1 45%;
        margin: 0.5rem;
    }
    
    .footer {
        padding: 1.5rem 1rem;
        margin-top: 3rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1rem;
        max-width: 95%;
    }
    
    .logo {
        width: 60px;
        height: 60px;
    }
    
    .container {
        padding: 20px 10px;
    }
    
    .section {
        padding: 1rem;
        margin: 1rem 0;
    }
    
    .feature {
        flex: 1 1 100%;
        margin: 0.5rem 0;
    }
    
    .footer {
        padding: 1rem 0.5rem;
        margin-top: 2rem;
    }
}