:root {
    --bg-dark: #121212;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #1e90ff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(-45deg, 
        #121212, 
        #202020,
        #1a2942,
        #252525);
    background-size: 300% 300%;
    animation: gradientBG 15s ease infinite;
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    position: relative;
    overflow-x: hidden;
    min-height: 100vh;
}

/* 恢复原来的背景动画 */
@keyframes gradientBG {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 100%;  /* 减小移动范围 */
    }
    100% {
        background-position: 0% 50%;
    }
}

/* 恢复原来的粒子效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 30px 30px;
    animation: particleFloat 20s linear infinite;
    pointer-events: none;
    z-index: -1;
}

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

/* 恢复原来的光晕效果 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, 
        rgba(30, 144, 255, 0.08) 0%,
        transparent 70%);
    animation: glowPulse 8s ease-in-out infinite;
    pointer-events: none;
    z-index: -1;
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.5;
    }
}

.navbar-container {
    width: 100%;
    background-color: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 9998;
    display: flex;
    justify-content: center;  /* 居中对齐 */
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 4rem;  /* 增加水平内边距 */
    max-width: 1600px;
    margin: 0 auto;
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 9998;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 3rem;  /* 增加链接之间的间距 */
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent);
}

/* 当前页面的链接也使用蓝色 */
.nav-links a.active {
    color: var(--accent);
}

.nav-brand {
    color: var(--text-primary);
    animation: breathe 3s ease-in-out infinite;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    font-weight: 500;
    letter-spacing: 1px;
    text-decoration: none;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.nav-brand:hover {
    opacity: 0.8;
}

/* 添加呼吸动画 */
@keyframes breathe {
    0%, 100% {
        opacity: 0.8;
        text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
    }
    50% {
        opacity: 1;
        text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
    }
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: 2rem 0;
    text-align: center;
    max-width: 1600px;
    margin: 0 auto;
}

.hero-content {
    margin-top: 20px;
    position: relative;
    animation: float 8s ease-in-out infinite;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content h2 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    text-shadow: 
        2px 2px 4px rgba(0, 0, 0, 0.5),
        0 0 15px rgba(30, 144, 255, 0.3);
    letter-spacing: 2px;
    position: relative;
    z-index: 2;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 2;
}

/* 添加悬浮动画 */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

/* 添加光晕效果 */
.hero-content::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 150%;
    height: 150%;
    background: radial-gradient(circle, 
        rgba(30, 144, 255, 0.1) 0%,
        transparent 70%);
    z-index: 1;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.5;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1.05);
    }
}

.section-title {
    width: 100%;
    max-width: 1600px;
    padding: 0;
    margin-top: 4rem;  /* 增加顶部间距 */
    text-align: center;
    position: relative;
    z-index: 1;
}

.section-title h2 {
    color: var(--text-primary);
    font-size: 1.4rem;
    font-weight: 500;
    margin-bottom: 1rem;
    opacity: 0.9;
    display: inline-block;
    position: relative;
    padding-bottom: 0.5rem;
    text-shadow: 
        2px 2px 4px rgba(0, 0, 0, 0.5),  /* 主阴影 */
        0 0 10px rgba(0, 0, 0, 0.3);  /* 柔和的发光效果 */
    letter-spacing: 1px;  /* 增加字间距 */
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: var(--accent);
    opacity: 0.8;
    box-shadow: 0 0 10px rgba(30, 144, 255, 0.5);  /* 为下划线添加发光效果 */
}

.section-title .subtitle {
    color: #808080; /* 使用更柔和的灰色 */
    font-size: 1rem;
    margin-top: 0.5rem;
    opacity: 0.7; /* 降低不透明度 */
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 3rem 0;  /* 增加上下内边距 */
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
}

.video-item {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: all 0.3s ease;
    transform-origin: center;
    margin-bottom: 1rem;  /* 添加底部间距 */
}

.video-item:hover {
    transform: scale(1.05);  /* 悬停时放大 */
    z-index: 1;  /* 确保放大的视频在上层 */
}

.video-item video {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 8px 8px 0 0;  /* 修改为只有上方圆角 */
    overflow: hidden;
    background: #1a1a1a;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: box-shadow 0.3s ease;
    margin-bottom: -8px;  /* 消除与标题之间的间隙 */
}

.video-item:hover video {
    box-shadow: 0 8px 30px rgba(30, 144, 255, 0.2);
}

.video-item img {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: 8px;
    object-fit: cover;
    background: #1a1a1a;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: box-shadow 0.3s ease;
}

.video-item:hover img {
    box-shadow: 0 8px 30px rgba(30, 144, 255, 0.2);
}

.video-item h3 {
    color: var(--text-primary);
    margin: 0;
    font-size: 0.9rem;
    text-align: center;
    padding: 0.8rem 0;
    font-weight: normal;
    opacity: 0.9;
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    border-radius: 0 0 8px 8px;
    position: relative;
    z-index: 1;
    backdrop-filter: blur(5px);
    box-shadow: 
        0 4px 12px rgba(0, 0, 0, 0.2),  /* 外部阴影 */
        0 -2px 8px rgba(0, 0, 0, 0.1);  /* 上方阴影 */
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);  /* 文字阴影 */
    transition: all 0.3s ease;  /* 添加过渡效果 */
}

.video-item:hover h3 {
    box-shadow: 
        0 6px 16px rgba(0, 0, 0, 0.25),  /* 悬停时增强外部阴影 */
        0 -2px 10px rgba(0, 0, 0, 0.15);  /* 悬停时增强上方阴影 */
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);  /* 悬停时增强文字阴影 */
}

.video-item iframe {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar {
        padding: 1rem 2rem;  /* 调整移动端的内边距 */
    }
    
    .nav-links {
        gap: 1.5rem;  /* 调整移动端链接间距 */
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* 添加弹出窗口样式 */
.contact-modal {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.95);
    padding: 2rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    text-align: center;
    min-width: 300px;
}

.contact-modal.show {
    display: block;
}

.contact-modal h2 {
    color: #000000;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    text-align: center;
}

.contact-modal p {
    color: #333333;
    margin: 0.8rem 0;
    font-size: 1rem;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 1rem;
    padding: 0 2rem;
}

.contact-modal span {
    color: #000000;
    font-weight: 500;
    min-width: 3em;
    text-align: right;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    color: #000000;
    cursor: pointer;
    font-size: 1.5rem;
    opacity: 0.7;
    line-height: 1;
}

.modal-close:hover {
    opacity: 1;
}

.contact-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0.8rem 0;
}

.contact-item p {
    margin: 0;
}

.copy-btn {
    background: #1e90ff;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    margin-left: 10px; /* 添加左边距 */
    transition: background 0.3s;
}

.copy-btn:hover {
    background: #1c86ee; /* 悬停时改变背景颜色 */
}

.copy-btn:active {
    transform: scale(0.95);
}

/* 为图片展示区域添加特殊的网格布局 */
.section-title + .portfolio-grid {
    grid-template-columns: repeat(4, 1fr);  /* 4列 */
}

/* 响应式调整 */
@media (max-width: 768px) {
    .section-title + .portfolio-grid {
        grid-template-columns: 1fr;  /* 在移动设备上改为单列 */
    }
}

/* 滑动展示样式 */
.slider-container {
    position: relative;
    width: 100%;
    max-width: 1600px;
    padding: 3rem 0;  /* 增加上下内边距 */
    margin: 0 auto;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.slider {
    display: flex;
    transition: transform 0.5s ease-in-out;
    height: 700px;
    width: 100%;
    cursor: grab;
    user-select: none;
}

.slider img {
    min-width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
    pointer-events: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    border-radius: 50%;
    transition: background 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    line-height: 0;
    padding: 0;
}

.slider-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.prev {
    left: 0;
    padding-right: 2px;
}

.next {
    right: 0;
    padding-left: 2px;
}

.slider-dots {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 0.5rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background 0.3s ease;
}

.dot.active {
    background: white;
}

.resume-content {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 60px); /* 减去导航栏的高度 */
    padding: 20px;
}

.resume-container {
    width: 100%;
    max-width: 794px; /* A4 纸的宽度 */
    margin: 0 auto;
    text-align: center;
}

.resume-image {
    width: 100%;
    height: auto;
    max-width: 794px;        /* A4 宽度 */
    max-height: 1123px;      /* A4 高度 */
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: block;
    margin: 0 auto;
}

.download-btn-container {
    position: absolute;
    right: 30px;  /* 调整按钮位置 */
    top: 20px;
    z-index: 9999;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(30, 144, 255, 0.9);
    color: white;
    padding: 1rem 1.2rem;  /* 增加按钮大小 */
    border-radius: 50px;
    text-decoration: none;
    font-size: 1rem;  /* 增加字体大小 */
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(5px);
    white-space: nowrap;
}

.download-btn:hover {
    background: rgba(30, 144, 255, 1);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.download-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.download-btn:hover .download-icon {
    transform: translateY(2px);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .resume-content {
        padding: 10px;
    }
    
    .resume-container {
        width: 90%;
    }
    
    .resume-image {
        width: 100%;
        height: auto;
    }
    
    .download-btn-container {
        right: 15px;  /* 移动端调整右侧间距 */
        top: 10px;
    }
    
    .download-btn {
        padding: 0.6rem 1rem;  /* 在移动端进一步减小内边距 */
        font-size: 0.85rem;
    }
}

/* 响应式调整 */
@media (max-width: 1440px) {
    .hero,
    .portfolio-grid,
    .section-title,
    .slider-container,
    .navbar {
        padding: 1rem 3rem;  /* 调整中等屏幕的内边距 */
    }
    
    .prev {
        left: 1rem;
    }
    
    .next {
        right: 1rem;
    }
}

@media (min-width: 1441px) {
    .navbar {
        padding: 1rem 0;  /* 在大屏幕上移除水平内边距 */
    }
}

.qr-code {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    text-align: center;
}

.qr-code img {
    width: 150px;
    height: 150px;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.qr-code p {
    margin-top: 0.8rem;
    color: #666666;
    font-size: 0.9rem;
    text-align: center;
    padding: 0;
    margin: 0.8rem auto;  /* 使用 margin: auto 来居中 */
    width: fit-content;  /* 让宽度适应内容 */
}

/* 确保内容在缩放时不会被裁剪 */
html {
    overflow-x: hidden;
    min-height: 100vh;
}

/* 调整第一个展示区域的间距 */
.hero-content + .section-title {
    margin-top: 6rem;  /* 为第一个展示区域添加更大的顶部间距 */
}

.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    border-radius: 50%;
    transition: background 0.3s ease;
    z-index: 3;
}

.image-compare {
    position: relative;
    width: 100%;
    height: 700px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    cursor: col-resize;
    user-select: none;
}

.image-before {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-after {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);  /* 初始裁切左半部分 */
}

.image-after img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

.drag-ball {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;  /* 球体的宽度 */
    height: 30px;  /* 球体的高度 */
    background: rgba(255, 255, 255, 0.8);  /* 球体的颜色 */
    border-radius: 50%;  /* 圆形 */
    transform: translate(-50%, -50%);  /* 居中对齐 */
    cursor: grab;  /* 鼠标样式 */
    z-index: 2;  /* 确保球体在图片上方 */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);  /* 添加阴影 */
    transition: transform 0.2s ease;  /* 添加过渡效果 */
}

.drag-ball:hover {
    transform: translate(-50%, -50%) scale(1.1);  /* 悬停时放大 */
}

.drag-ball:active {
    cursor: grabbing;  /* 拖动时改变光标样式 */
}

.drag-tip {
    position: absolute;
    top: 60%;  /* 根据需要调整位置 */
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.9);
    font-size: 12px;
    background: rgba(0, 0, 0, 0.5);
    padding: 4px 8px;
    border-radius: 4px;
    z-index: 3;  /* 确保提示文本在球体上方 */
    white-space: nowrap;  /* 防止文本换行 */
}

.ai-showcase {
    width: 100%;
    max-width: 1600px;
    padding: 3rem 0;
    margin: 0 auto;
}

.ai-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 2rem;
}

.ai-item {
    position: relative;
    height: 300px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    cursor: col-resize;
    user-select: none;
}

.ai-item img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ai-item img:last-child {
    clip-path: polygon(0 0, 50% 0, 50% 100%, 0 100%);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .ai-grid {
        grid-template-columns: 1fr; /* 在手机端设置为单列 */
        padding: 1rem;
    }
}

/* 禁用图片拖动效果 */
.ai-item img {
    pointer-events: none;  /* 禁用鼠标事件 */
    user-drag: none;  /* 禁用拖动 */
    -webkit-user-drag: none;  /* Safari 支持 */
}

/* 禁用对比线的样式 */
.comparison-line {
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;  /* 线的宽度 */
    height: 100%;
    background: rgba(255, 255, 255, 0.8);  /* 线的颜色 */
    transform: translateX(-50%);  /* 居中对齐 */
    pointer-events: none;  /* 禁用鼠标事件 */
    z-index: 1;  /* 确保线在图片上方 */
}

.drag-ball {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    cursor: grab;
    z-index: 2;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.drag-ball:hover {
    transform: translate(-50%, -50%) scale(1.1);  /* 悬停时放大 */
}

.drag-ball:active {
    cursor: grabbing;  /* 拖动时改变光标样式 */
}

.drag-tip {
    position: absolute;
    top: 60%;  /* 根据需要调整位置 */
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(255, 255, 255, 0.9);
    font-size: 12px;
    background: rgba(0, 0, 0, 0.5);
    padding: 4px 8px;
    border-radius: 4px;
    z-index: 3;  /* 确保提示文本在球体上方 */
    white-space: nowrap;  /* 防止文本换行 */
}

.modal {
    display: none; /* 默认隐藏 */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.modal img {
    max-width: 90%;
    max-height: 90%;
    border-radius: 8px;
}

.black-background {
    width: 100%;
    height: 100px;  /* 设置高度 */
    background-color: #121212;  /* 黑色背景 */
    position: relative;  /* 确保它在内容下方 */
    margin-top: 20px;  /* 与内容之间的间距 */
}

.ai-item.placeholder {
    background-color: #1a2632; /* 深色背景 */
    display: flex;
    justify-content: center;
    align-items: center;
    border: 2px solid #2d3a45; /* 添加边框 */
}

.placeholder-text {
    color: #ff3b30; /* 红色文字 */
    font-size: 1.5rem;
    text-align: center;
}