/* --- 核心变量与基础样式 --- */
:root {
    --primary-purple: #9d8df1;
    --accent-soft: #b8afff;
    --text-main: #4a4a4a;
    --card-bg: rgba(255, 255, 255, 0.65);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
    font-family: 'Noto Sans SC', sans-serif;
}

html {
    /* 强制纵向滚动吸附，mandatory 表示强力吸附 */
    scroll-snap-type: y proximity;
    scroll-behavior: smooth;
}

head {
    scroll-snap-align: start;
}

body {
    background: white;
}

/* --- 背景幻灯片 --- */
.slideshow-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
    background: white;
}

.slide {
    position: absolute;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    filter: blur(10px);
    transform: scale(1.1);
    animation: crossFade 18s linear infinite;
}

.white-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.45); 
    z-index: 2;
    pointer-events: none;
}

.slide:nth-child(1) { animation-delay: 0s; }
.slide:nth-child(2) { animation-delay: 6s; }
.slide:nth-child(3) { animation-delay: 12s; }

.hero, section, footer {
    position: relative;
    z-index: 10; 
}

@keyframes crossFade {
    0% { opacity: 0; }
    5% { opacity: 1; }
    33% { opacity: 1; }
    38% { opacity: 0; }
    100% { opacity: 0; }
}

/* --- 动画定义 --- */
@keyframes heroEntrance {
    0% { opacity: 0; transform: scale(0.9) translateY(20px); filter: blur(10px); }
    100% { opacity: 1; transform: scale(1) translateY(0); filter: blur(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

@keyframes arrowBounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

@keyframes rotateMusic {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* --- Hero Section --- */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    animation: heroEntrance 2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
    scroll-snap-align: start;
}

.logo-placeholder {
    width: 150px; height: 150px;
    background: #000000; border-radius: 40px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 25px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    animation: float 4s ease-in-out infinite;
    overflow: hidden;
}

.main-logo {
    width: 80%; height: 80%;
    object-fit: contain;
    pointer-events: none;
}

.site-title {
    font-size: 2.8rem;
    margin-bottom: 10px;
    color: #5e548e;
    letter-spacing: 3px;
    opacity: 0;
    animation: heroEntrance 1.5s cubic-bezier(0.22, 1, 0.36, 1) 0.5s forwards;
}

.slogan {
    font-size: 1.2rem;
    color: #5e548e;
    letter-spacing: 2px;
    opacity: 0;
    animation: heroEntrance 1.5s cubic-bezier(0.22, 1, 0.36, 1) 1s forwards;
}

.scroll-hint {
    position: absolute;
    bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: #5e548e;
    font-size: 0.9rem;
    opacity: 0;
    animation: heroEntrance 1.5s cubic-bezier(0.22, 1, 0.36, 1) 1.5s forwards;
}

.scroll-hint i {
    animation: arrowBounce 2s infinite;
}

.scroll-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.scroll-hint:hover {
    transform: translateX(-50%) scale(1.05);
    transition: transform 0.3s ease;
}
/* --- 首页内容渐隐动画 --- */
.hero-content {
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.hero-content.hidden {
    opacity: 0;
    transform: translateY(-50px);
    pointer-events: none;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background-color: white; 
    color: var(--primary-purple);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    z-index: 999;
    transition: all 0.3s ease;
    
    /* 初始隐藏状态 */
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: var(--primary-purple);
    color: #ffffff;
    transform: translateY(-5px);
}

.section-main-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 180px; /* 与下方图集的间距 */
    letter-spacing: 6px;
    width: fit-content;
    padding: 12px 40px;
    border-radius: 15px; /* 圆角大小 */
    position: relative;
    padding-bottom: 15px;
    color: white; 
    /*text-shadow: 0 2px 10px rgba(94, 84, 142, 0.5);*/
    z-index: 10;
    text-shadow: 
        -1px -1px 0 #5e548e,  
         1px -1px 0 #5e548e,
        -1px  1px 0 #5e548e,
         1px  1px 0 #5e548e;
}

.section-main-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary-purple);
    border-radius: 2px;
    opacity: 0.8;
}
.section-footer-hint {
    margin-top: 100px; /* 与上方控制器的间距 */
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: #5e548e;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    margin-bottom: -32px;
}
.section-footer-hint i {
    animation: arrowBounce 2s infinite; 
}

.section-footer-hint:hover {
    transform: translateY(5px);
    opacity: 0.8;
}
/* --- Gallery 基础样式 --- */
.gallery-section {
    height: 100vh;
    scroll-margin-top: -10px;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 1000px; 
    padding: 60px 0;
    padding-bottom: 80px; 
    flex-direction: column; 
}

.gallery-container {
    position: relative;
    width: 80%;
    height: 400px;
}

.gallery-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}

.gallery-item {
    position: absolute;
    width: 960px;
    height: 540px;
    left: 50%;
    margin-left: -480px;
    margin-top: -150px;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    z-index: 1;
    background-size: cover;
    background-position: center;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.2);
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    pointer-events: none;
}

/*.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}*/

/* --- 核心：Cover Flow 状态 --- */

/* 中间这张 */
.gallery-item.active {
    opacity: 1;
    z-index: 100;
    pointer-events: auto;
}

/* 右边这张 */
.gallery-item.next {
    opacity: 0.6;
    transform: translate3d(250px, 0, 0) scale(0.8);
    z-index: 10;
    pointer-events: auto;
}

/* 左边这张 */
.gallery-item.prev {
    opacity: 0.6;
    transform: translate3d(-250px, 0, 0) scale(0.8);
    z-index: 10;
    pointer-events: auto;
}

/* --- 2. 信息容器样式 (红框区域) --- */
.item-info {
    width: 100%;
    padding: 25px 30px; /* 增加内边距 */
    display: flex;
    justify-content: space-between; /* 左右分栏 */
    align-items: center; /* 垂直居中 */
    
    /* 核心：黑色半透明渐变遮罩 (从底部向上渐淡) */
    background: rgba(0,0,0,0.8);
    /*linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.5) 60%, transparent 100%);*/
    
    /* 初始状态：信息在切换时可以有轻微浮现感 */
    transition: all 0.5s ease;
}

/* --- 3. 焦点状态下的细节处理 --- */
/* 当图片不是焦点（.next, .prev）时，压低信息容器的透明度 */
.gallery-item:not(.active) .item-info {
    opacity: 0.3;
    filter: blur(1px); /* 可选：增加轻微模糊 */
}

/* --- 4. 文字与按钮样式 --- */
.info-text h3 {
    color: white;
    font-size: 1.25rem;
    margin-bottom: 5px;
    letter-spacing: 1px;
}

.info-text p {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

.detail-btn {
    padding: 10px 20px;
    background: #ffffff; /* 亮白色 */
    color: var(--primary-purple); 
    text-decoration: none;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.detail-btn:hover {
    background: var(--primary-purple);
    color: white;
    transform: translateX(3px) scale(1.05);
    box-shadow: 0 5px 15px rgba(157, 141, 241, 0.4);
}

.gallery-controls {
    display: flex;
    align-items: center; 
    justify-content: center; 
    gap: 20px; 
    margin-top: 30px; 
    width: 100%;
}

/* 切换按钮样式 */
.gallery-nav {
    position: static; 
    transform: none; 
    width: 45px;
    height: 45px;
    background: white;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.gallery-nav:hover {
    background: var(--primary-purple);
    color: white;
}
.prev-btn { left: -50px; }
.next-btn { right: -50px; }

.gallery-pagination {
    display: flex;
    gap: 10px;
    align-items: center;
}

.pagination-line {
    width: 25px;
    height: 4px;
    background: var(--primary-purple);
    /*opacity: 0.3;*/
    border-radius: 2px;
    transition: all 0.3s ease;
}

.pagination-line.active {
    opacity: 1;
    width: 40px;
    /*background: white;*/
    position: relative;
    overflow: hidden;
}

.pagination-line.active::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 0;
    background: white;
    animation: progressFill 10s linear forwards;
}

@keyframes progressFill {
    from { width: 0; }
    to { width: 100%; }
}

#developers-section {
    /* 当通过 ID 锚点跳转到此元素时，上方自动留出 100px 的空白 */
    scroll-margin-top: -40px; 
}
/* --- 1. 开发者模块容器 --- */
.dev-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 60px; 
    padding: 100px 20px; 
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

/* --- 2. 基础卡片样式与放大逻辑 --- */
.dev-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    cursor: pointer;
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), z-index 0s;
    z-index: 1;
    bottom: 32px;
}

.avatar-wrapper {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 4px solid white; 
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    overflow: hidden;
    margin-bottom: 15px;
    transition: transform 0.4s ease;
}

.avatar-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.dev-name {
    color: var(--text-main);
    font-weight: 700;
    font-size: 1.1rem;
    transition: opacity 0.3s ease;
}

/* --- 核心：当卡片被“激活” (active) 时 --- */
.dev-card.active {
    transform: scale(1.3); /* 头像原位放大 */
    z-index: 100; 
}

/* 放大时隐藏底下的文字，防止重叠 */
.dev-card.active .dev-name {
    opacity: 0;
}

/* --- 3. 信息气泡卡片 (对话框气泡样式) --- */
.dev-info-bubble {
    position: absolute;
    bottom: calc(100% + 20px);
    left: 50%;
    /* 初始状态：略微向下偏移，透明度为 0 */
    transform: translateX(-50%) translateY(10px); 
    width: max-content;
    min-width: 250px;
    background: white;
    padding: 25px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    
    opacity: 0;
    pointer-events: none; /* 隐藏时不可点击 */
    
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    
    z-index: 100;
}

/* --- 核心：卡片激活时显示气泡 --- */
.dev-card.active .dev-info-bubble {
    opacity: 1;
    visibility: visible;
    pointer-events: auto; /* 允许点击内部链接 */
    transform: translateX(-50%) translateY(0); /* 浮现到最终位置 */
}

/* --- 4. 气泡箭头 (向下对齐头像) --- */
.bubble-arrow {
    position: absolute;
    bottom: -10px; /* 箭头突出气泡底部 10px */
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid white; /* 箭头颜色与气泡一致 */
}

/* --- 5. 气泡内部内容样式 --- */
.bubble-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}

.bubble-name {
    color: #5e548e; 
    font-size: 1.2rem;
    font-weight: 800;
}

.bubble-role {
    color: var(--text-main);
    font-size: 0.9rem;
    opacity: 0.8;
}

.bubble-bili {
    margin-top: 10px;
    font-size: 1.8rem;
    color: #00aeec; /* B站蓝 */
    text-decoration: none;
    transition: 0.3s;
}

.bubble-bili:hover {
    color: #fb7299; /* 悬停变为 B站粉 */
    transform: scale(1.1);
}

/* --- 6. 关闭按钮样式 (气泡内的 ×) --- */
.close-bubble {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 1.5rem;
    cursor: pointer;
    color: #aaa;
    transition: color 0.3s ease;
}

.close-bubble:hover {
    color: #5e548e;
}

/* --- 音乐控制 --- */
.music-control {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
    padding: 10px 18px;
    border-radius: 30px;
    border: 1px solid rgba(255, 255, 255, 0.4);
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    color: var(--primary-purple);
    transition: all 0.3s ease;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

.music-control.playing .music-icon {
    animation: rotateMusic 3s linear infinite;
}

.music-control.muted {
    opacity: 0.6;
}

/* --- 内容板块 --- */
section {
    min-height: 90vh;
    padding: 100px 10vw;
    display: flex;
    flex-direction: column;
    align-items: center;
    scroll-snap-align: start;
    scroll-snap-stop: always;
}

.section-title {
    font-size: 2.2rem;
    margin-bottom: 50px;
    color: #5e548e;
    position: relative;
}

.section-title::after {
    content: '';
    width: 40px; height: 4px;
    background: var(--primary-purple);
    position: absolute;
    bottom: -12px; left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.content-card {
    background: var(--card-bg);
    backdrop-filter: blur(15px);
    border-radius: 30px;
    padding: 45px;
    width: 100%;
    max-width: 850px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.05);
    border: 1px solid rgba(255,255,255,0.4);
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* --- 网格与列表 --- */
.link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    width: 100%;
    max-width: 850px;
}

.link-item {
    background: white;
    padding: 25px;
    border-radius: 20px;
    text-align: center;
    text-decoration: none;
    color: var(--text-main);
    transition: 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.link-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(157, 141, 241, 0.2);
}

.link-item i { font-size: 2.2rem; color: var(--primary-purple); }

.log-item {
    border-left: 3px solid var(--accent-soft);
    padding: 0 0 30px 25px;
    position: relative;
}

.log-item::before {
    content: '';
    width: 12px; height: 12px;
    background: var(--primary-purple);
    border-radius: 50%;
    position: absolute;
    left: -8px; top: 5px;
}

.log-date { font-weight: bold; color: var(--primary-purple); margin-bottom: 5px; }

footer { padding: 60px; text-align: center; opacity: 0.6; font-size: 0.85rem; }

.beian-logo {
    width:15px;
    vertical-align: middle;
}

@media (max-width: 600px) {
    .site-title { font-size: 2rem; }
}
/* 移动端响应式适配 */
@media (max-width: 768px) {
    /* 1. 调整 3D 容器高度，防止第一屏内容重叠 */
    .gallery-container {
        height: 300px;
        width: 100%;
    }

    /* 2. 核心：重置画廊卡片尺寸 */
    .gallery-item {
        width: 85vw;   /* 宽度改为屏幕宽度的 85% */
        height: 48vw;  /* 按比例设置高度 */
        margin-left: -42.5vw; /* 负边距为宽度的一半以保持居中 */
        margin-top: -50px;
    }

    /* 3. 减小 3D 位移，防止左右两张卡片飞出屏幕 */
    .gallery-item.next {
        transform: translate3d(15%, 0, -100px) scale(0.85);
        opacity: 0.4;
    }

    .gallery-item.prev {
        transform: translate3d(-15%, 0, -100px) scale(0.85);
        opacity: 0.4;
    }

    /* 4. 适配底部的文字信息栏 */
    .item-info {
        padding: 10px 15px;
        flex-direction: column; /* 手机上文字和按钮上下堆叠 */
        align-items: flex-start;
        gap: 10px;
    }

    .info-text h3 {
        font-size: 1rem;
    }

    .info-text p {
        display: none; /* 手机屏窄，建议隐藏副标题以节省空间 */
    }

    .detail-btn {
        padding: 6px 12px;
        font-size: 0.75rem;
        align-self: flex-end; /* 按钮靠右显示 */
    }

    /* 5. 调整标题间距 */
    .section-main-title {
        font-size: 1.8rem;
        margin-bottom: 120px;
        letter-spacing: 3px;
    }
}