:root {
    /* 明亮主题颜色 */
    --primary-color: #F8C8DC;
    --secondary-color: #B4A0E5;
    --accent-color: #A3D8F4;
    --text-primary: #3D3B56;
    --bg-card: rgba(255, 255, 255, 0.45);
    --border-color: rgba(255, 255, 255, 0.6);
    --shadow-color: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    /* 暗黑主题颜色 */
    --primary-color: #F8C8DC;
    --secondary-color: #C0B6F2;
    --accent-color: #A3D8F4;
    --text-primary: #E6E0FF;
    --bg-card: rgba(25, 22, 42, 0.5);
    --border-color: rgba(255, 255, 255, 0.2);
    --shadow-color: rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

body {
    font-family: "LXGW WenKai", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-primary);
    overflow: hidden; /* 禁用滚动 */
    position: relative;
    height: 100vh;
}

/* 背景层 */
.background-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.background-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 2s ease-in-out;
}

.background-layer.active {
    opacity: 1;
}

/* 主题切换按钮 */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px var(--shadow-color);
}

/* 导航点 */
.nav-dots {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.nav-dot.active {
    background: var(--primary-color);
    transform: scale(1.3);
    border-color: var(--text-primary);
}

/* 页面部分 */
.section {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.6s ease, visibility 0.6s ease;
    z-index: 1;
}

.section.active {
    opacity: 1;
    visibility: visible;
    z-index: 10;
}

.content-container {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 12px 40px var(--shadow-color);
    max-width: 900px;
    width: 100%;
    text-align: center;
    transform: translateY(20px);
    transition: transform 0.6s ease;
}

.section.active .content-container {
    transform: translateY(0);
}

/* 首页样式 */
.home-section .avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    margin-bottom: 1.5rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.home-section h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.home-section .subtitle {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.home-section .description {
    font-size: 1.2rem;
    color: var(--text-primary);
    opacity: 0.8;
}

/* 倒计时样式 */
.countdown-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.countdown-circle {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto;
    overflow: visible;
}

.countdown-svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
    display: block;
}

.countdown-bg {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 8;
}

.countdown-progress {
    fill: none;
    stroke: var(--secondary-color);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 942; /* 2 * PI * 150 */
    stroke-dashoffset: 942;
    transition: stroke-dashoffset 1s ease;
}

.countdown-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.countdown-main {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.countdown-label {
    font-size: 1rem;
    color: var(--secondary-color);
}

/* 简历样式 */
.resume-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    text-align: left;
}

.resume-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.resume-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.resume-item p {
    line-height: 1.6;
    font-size: 1.1rem;
}

/* 问答和秘密样式 */
.qa-container, .secrets-container {
    text-align: left;
    max-width: 800px;
    margin: 0 auto;
}

.qa-item, .secret-item {
    margin-bottom: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.qa-question, .secret-title {
    background: var(--secondary-color);
    color: white;
    padding: 1rem 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    transition: background 0.3s ease;
}

.qa-question:hover, .secret-title:hover {
    background: var(--primary-color);
}

.qa-answer, .secret-content {
    padding: 1.5rem;
    line-height: 1.8;
    display: none;
    animation: fadeIn 0.3s ease;
}

.qa-answer.active, .secret-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.toggle-icon {
    transition: transform 0.3s ease;
}

.toggle-icon.rotated {
    transform: rotate(180deg);
}

/* 联系方式样式 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px var(--shadow-color);
    background: rgba(255, 255, 255, 0.2);
}

.contact-item i {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.contact-item h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-item p {
    opacity: 0.9;
}

/* 页脚 */
.footer {
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    opacity: 0.8;
}

.footer p {
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
}

.footer a {
    color: var(--accent-color);
    text-decoration: none;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .section {
        padding: 1rem;
    }
    
    .home-section h1 {
        font-size: 2.5rem;
    }
    
    .content-container {
        padding: 1.5rem;
        max-width: calc(100vw - 2rem);
    }
    
    .countdown-circle {
        width: 240px;
        height: 240px;
    }
    
    .countdown-main {
        font-size: 1.2rem;
    }
    
    .countdown-label {
        font-size: 0.9rem;
    }
    
    .nav-dots {
        right: 15px;
        gap: 10px;
    }
    
    .nav-dot {
        width: 10px;
        height: 10px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .theme-toggle {
        top: 15px;
        right: 15px;
        width: 45px;
        height: 45px;
    }
    
    /* 移动端滚动功能 */
    #resume .content-container,
    #about .content-container,
    #contact .content-container {
        overflow-y: auto;
        max-height: calc(100vh - 100px);
    }
    
    /* 移动端内容间距优化 */
    #resume .resume-grid,
    #about .qa-container,
    #contact .contact-grid {
        margin-bottom: 1rem;
    }
    
    #about .qa-item,
    #contact .contact-item {
        margin-bottom: 1rem;
    }
    
    /* 移动端自定义滚动条样式 */
    #resume .content-container::-webkit-scrollbar,
    #about .content-container::-webkit-scrollbar,
    #contact .content-container::-webkit-scrollbar {
        width: 6px;
    }
    
    #resume .content-container::-webkit-scrollbar-track,
    #about .content-container::-webkit-scrollbar-track,
    #contact .content-container::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 3px;
    }
    
    #resume .content-container::-webkit-scrollbar-thumb,
    #about .content-container::-webkit-scrollbar-thumb,
    #contact .content-container::-webkit-scrollbar-thumb {
        background: var(--primary-color);
        border-radius: 3px;
        opacity: 0.7;
    }
    
    #resume .content-container::-webkit-scrollbar-thumb:hover,
    #about .content-container::-webkit-scrollbar-thumb:hover,
    #contact .content-container::-webkit-scrollbar-thumb:hover {
        background: var(--secondary-color);
    }
}

@media (max-width: 480px) {
    .countdown-circle {
        width: 200px;
        height: 200px;
    }
    
    .countdown-main {
        font-size: 1rem;
    }
    
    .countdown-svg {
        transform: rotate(-90deg);
    }
    
    /* 超小屏幕滚动优化 */
    #resume .content-container,
    #about .content-container,
    #contact .content-container {
        max-height: calc(100vh - 80px);
        padding: 1.2rem;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}