/* --- 全局样式与玻璃拟态风格 V3 --- */

/* 导入更现代的字体 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg-color: #0a0a0a; /* 更深的黑色背景 */
    --glass-bg: rgba(255, 255, 255, 0.08); /* 更透明的玻璃背景 */
    --glass-border: rgba(255, 215, 0, 0.2); /* 金黄色边框 */
    --text-color: #f5f5f5;
    --text-color-muted: #b0b0b0;
    --accent-color: #ffd700; /* 金黄色强调色 */
    --accent-color-hover: #ffea80;
    --accent-gradient: linear-gradient(135deg, #ffd700, #ff9500); /* 金色到橙色渐变 */
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    height: 100vh;
    box-sizing: border-box;
    overflow: hidden;
    background-image:
        radial-gradient(at 27% 37%, hsla(45, 100%, 50%, 0.3) 0px, transparent 50%), /* 金色光晕 */
        radial-gradient(at 97% 21%, hsla(39, 100%, 70%, 0.2) 0px, transparent 50%), /* 淡金色光晕 */
        radial-gradient(at 52% 99%, hsla(36, 100%, 55%, 0.3) 0px, transparent 50%), /* 深金色光晕 */
        radial-gradient(at 10% 29%, hsla(45, 100%, 60%, 0.2) 0px, transparent 50%), /* 中金色光晕 */
        radial-gradient(at 97% 96%, hsla(38, 90%, 50%, 0.2) 0px, transparent 50%), /* 橙金色光晕 */
        radial-gradient(at 33% 50%, hsla(45, 100%, 70%, 0.3) 0px, transparent 50%), /* 淡金色光晕 */
        radial-gradient(at 79% 53%, hsla(36, 100%, 65%, 0.2) 0px, transparent 50%); /* 金橙色光晕 */
    background-size: 200% 200%;
    animation: gradient-animation 15s ease infinite;
}

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


.app-container {
    display: flex;
    width: 100%;
    height: 100%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* 侧边导航栏 */
.sidebar {
    width: 240px;
    background-color: rgba(10, 10, 10, 0.5); /* 深色玻璃 */
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 20px;
    flex-shrink: 0;
    transition: background-color 0.3s;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
    text-align: center;
    margin-bottom: 40px;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5); /* 金色光晕 */
}

.main-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.main-nav li {
    margin-bottom: 8px;
}

.nav-link {
    display: block;
    padding: 12px 15px;
    color: var(--text-color-muted);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease-in-out;
    font-weight: 500;
}

.nav-link:hover {
    background-color: var(--glass-bg);
    color: var(--text-color);
}

.nav-link.active {
    background: var(--accent-gradient);
    color: #000000; /* 黑色文字，对比金色背景 */
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(255, 215, 0, 0.3);
}

.sidebar footer {
    margin-top: auto;
    text-align: center;
    color: #888;
    font-size: 0.85rem;
    position: relative;
    padding-top: 15px; /* 为按钮留出空间 */
    padding-bottom: 5px;
}

.footer-links {
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-color-muted);
    text-decoration: none;
    font-size: 0.8rem;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.footer-link:hover {
    color: var(--accent-color);
    background: rgba(255, 215, 0, 0.1);
    transform: translateY(-1px);
}

.lang-switcher {
    position: absolute;
    top: 25px;
    right: 40px;
    z-index: 1000; /* 确保在最上层 */
    background: rgba(255, 215, 0, 0.15);
    border: 1px solid rgba(255, 215, 0, 0.3);
    color: var(--accent-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all 0.2s ease-in-out;
}
.lang-switcher:hover {
    background: rgba(255, 215, 0, 0.25);
    transform: scale(1.05);
}


/* 主内容区 */
.content-area {
    flex-grow: 1;
    padding: 40px;
    overflow-y: auto;
    position: relative;
}

/* --- 定制滚动条样式 --- */
.content-area::-webkit-scrollbar {
    width: 8px;
}

.content-area::-webkit-scrollbar-track {
    background: transparent; /* 轨道背景透明 */
}

.content-area::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.3); /* 滑块颜色 */
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.content-area::-webkit-scrollbar-thumb:hover {
    background-color: rgba(255, 255, 255, 0.5); /* 鼠标悬停时颜色 */
}


/* --- 工具容器通用样式 --- */
.tool-container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 30px;
    border: none;
    padding-bottom: 20px;
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
}

header p {
    margin-top: 8px;
    font-size: 1.1rem;
    color: var(--text-color-muted);
}

/* -- 按钮与上传区域 -- */

.upload-area, .upload-area-half, .upload-area-full {
    border: 2px dashed var(--glass-border);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    background: var(--glass-bg);
    transition: all 0.3s;
    display: flex; /* 使用flex来垂直居中 */
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 220px; /* 给一个最小高度 */
    position: relative; /* 用于定位删除按钮 */
}
.upload-area p, .upload-area-half p, .upload-area-full p {
    color: var(--text-color-muted);
    margin-top: 15px;
    font-weight: 500;
}
.upload-area:hover, .upload-area.drag-over,
.upload-area-half:hover, .upload-area-half.drag-over,
.upload-area-full:hover, .upload-area-full.drag-over {
    border-color: var(--accent-color);
    background: rgba(255, 215, 0, 0.1); /* 金色背景 */
}

.upload-icon {
    color: var(--text-color-muted);
    margin-bottom: 16px;
    transition: color 0.3s;
}

.upload-area:hover .upload-icon,
.upload-area-half:hover .upload-icon,
.upload-area-full:hover .upload-icon {
    color: var(--text-color);
}

.upload-area.drag-over .upload-icon,
.upload-area-half.drag-over .upload-icon,
.upload-area-full.drag-over .upload-icon {
    color: var(--accent-color);
}

/* --- 新增：图片分割预览居中 --- */
#splitPreviewContainer {
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

.split-image-wrapper img {
    max-width: 80%; /* 缩小最大宽度 */
    max-height: 400px; /* 减小最大高度 */
    height: auto;
    object-fit: contain; /* 确保图片保持比例 */
    box-shadow: 0 4px 15px rgba(0,0,0,0.2); /* 添加阴影效果 */
    border-radius: 8px; /* 圆角 */
}


/* 晶莹剔透的按钮 */
.upload-btn, .compress-btn, .download-all-btn, .action-btn {
    background: var(--accent-gradient);
    color: black;
    padding: 12px 28px;
    border: 1px solid transparent;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.2);
    text-shadow: none;
}

.upload-btn:hover, .compress-btn:hover, .download-all-btn:hover, .action-btn:hover {
    background-color: var(--accent-color-hover);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
    transform: translateY(-2px);
}

.download-btn {
    background-color: rgba(90, 200, 250, 0.7);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s;
    box-shadow: 0 2px 8px rgba(90, 200, 250, 0.2);
}
.download-btn:hover {
    background-color: #5ac8fa;
    box-shadow: 0 4px 12px rgba(90, 200, 250, 0.4);
    transform: translateY(-1px);
}


/* -- 结果与其他组件 -- */

.results-area {
    margin-top: 30px;
}

.result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 10px;
    position: relative;
}

.result-item img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    margin-right: 15px;
}

/* 为split功能的结果图片单独设置样式 */
#splitResultContainer .result-item img {
    width: 100px;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
    margin-right: 15px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

/* 添加分割结果项的样式 */
.split-result-item {
    margin-bottom: 15px;
    background-color: var(--glass-bg);
    border-radius: 10px;
    overflow: hidden;
}

.result-item-inner {
    display: flex;
    align-items: center;
    padding: 10px;
}

.file-info {
    flex-grow: 1;
}

.file-name {
    font-weight: 600;
    color: var(--text-color);
}

.size-info {
    font-size: 0.9rem;
    color: var(--text-color-muted);
}
.size-info .reduction {
    color: #ff9500; /* Apple Orange */
    font-weight: bold;
}

/* --- 二维码工具 V3 布局与组件 --- */
.qr-workspace {
    display: grid;
    grid-template-columns: 1fr 1fr; /* 两列平均分配 */
    grid-template-rows: auto auto; /* 两行自适应 */
    gap: 20px;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 20px auto;
}

/* 二维码工具的上传区域统一样式 */
#baseImageUploadArea,
#qrImageUploadArea {
    min-height: 180px !important;
    width: 100% !important;
    flex: 1;
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 20px;
    box-sizing: border-box;
}

.upload-area-half {
    min-height: 180px; /* 统一高度 */
    width: 100%; /* 占满父容器 */
}

.qr-preview-container {
    grid-column: 1 / 3;
    grid-row: 2;
    min-height: 300px;
    width: 100%;
    max-width: none;
    margin: 0;
    position: relative; /* 用于定位删除按钮 */
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--glass-bg);
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    overflow: visible; /* 允许内容溢出，确保二维码可以完整显示 */
    padding: 20px 0; /* 添加上下内边距 */
}

/* 添加新的包装器样式 */
.qr-image-wrapper {
    position: relative;
    display: inline-block;
    line-height: 0;
    width: auto;
    height: auto;
    max-width: 100%; /* 增加包装器最大宽度为100% */
    margin: 0 auto;
    overflow: visible; /* 允许内容溢出 */
}

/* 添加分割图片包装器样式 */
.split-image-wrapper {
    position: relative;
    display: inline-block;
    line-height: 0;
    margin: 20px auto;
    text-align: center;
}

.delete-btn-overlay {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 28px;
    height: 28px;
    background-color: rgba(0,0,0,0.6);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 16px;
    font-weight: bold;
    z-index: 10;
    line-height: 28px;
    transition: all 0.2s ease;
}

/* 二维码功能专用删除按钮样式 */
.qrcode-delete-btn {
    position: absolute;
    width: 36px;
    height: 36px;
    background-color: rgba(255, 59, 48, 0.95);
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    cursor: pointer;
    display: flex !important;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    z-index: 1001;
    line-height: 1;
    transition: all 0.2s ease;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
    font-family: Arial, sans-serif;
}

/* 底图删除按钮位置 */
.qrcode-delete-btn[data-type="base"] {
    top: 15px;
    left: 15px;
}

/* 二维码删除按钮位置 */  
.qrcode-delete-btn[data-type="qr"] {
    top: 15px;
    right: 15px;
}

/* 二维码上传区域样式 */
.upload-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    flex: 1; /* 平均分配空间 */
}

.image-controls {
    width: 100%;
    text-align: center;
}

.delete-image-btn {
    background: var(--accent-gradient);
    color: black;
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.2);
}

.delete-image-btn:hover {
    background-color: var(--accent-color-hover);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);
    transform: translateY(-1px);
}

.qr-preview-container {
    grid-column: 1 / 3; /* 跨越两列 */
    grid-row: 2; /* 第二行 */
}
.delete-btn-overlay:hover {
    background-color: #ff3b30; /* Apple red */
    transform: scale(1.1);
}

.qrcode-delete-btn:hover {
    background-color: rgba(255, 59, 48, 1);
    border-color: rgba(255, 255, 255, 1);
    transform: scale(1.1);
    box-shadow: 0 3px 12px rgba(255, 59, 48, 0.4);
}

.qr-result-view {
    text-align: center;
}
.qr-result-view h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}
.qr-result-view img {
    max-width: 90%;
    max-height: 450px; /* 限制最大高度 */
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    margin-bottom: 20px;
    object-fit: contain; /* 确保图片保持比例 */
}
.qr-result-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* 二维码工具专属样式 V2 */
.upload-dual-container {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.upload-area-half p {
    font-weight: 600;
    color: var(--text-color-muted);
    pointer-events: none;
}

.qr-preview-container .base-image {
    display: block;
    max-width: 100%; /* 使其适应包装器 */
    max-height: 80vh; /* 限制最大高度为视窗高度的80% */
    height: auto;
    border-radius: 10px;
    object-fit: contain; /* 确保图片保持比例 */
}

.qr-preview-container .qr-overlay {
    position: absolute;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    transition: all 0.1s ease-in-out;
    cursor: move;
    border-radius: 6px; /* 给二维码图片也加上圆角 */
}

.qr-controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
}

.control-group {
    display: flex;
    flex-direction: column;
}

.control-group label {
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-color);
}

.control-group input[type="text"],
.control-group select {
    padding: 10px;
    border: 1px solid var(--glass-border);
    background-color: rgba(0,0,0,0.2);
    color: var(--text-color);
    border-radius: 8px;
    font-size: 1rem;
}
.control-group select option {
    background-color: #333;
}

.control-group input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: var(--glass-bg);
    border-radius: 5px;
    outline: none;
    transition: opacity .2s;
    border: 1px solid var(--glass-border);
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid white;
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    cursor: pointer;
    border-radius: 50%;
    border: 2px solid white;
}


.info-text {
    text-align: center;
    color: var(--text-color-muted);
    font-size: 0.9rem;
    margin-top: 5px;
}

/* 占位符样式 */
.placeholder {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
    text-align: center;
    color: var(--text-color-muted);
}
.placeholder h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 10px;
}
.placeholder p {
    font-size: 1.2rem;
}

/* --- 移动端响应式设计 --- */
/* 汉堡菜单样式 */
.hamburger-menu {
    display: none;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.8rem;
    cursor: pointer;
    padding: 5px;
    margin-right: 10px;
    transition: all 0.3s ease;
}
.hamburger-menu:hover {
    transform: scale(1.1);
    color: var(--accent-color);
}

/* 小型手机 */
@media (max-width: 375px) {
    header h1 {
        font-size: 1.7rem; /* 更小屏幕上进一步减小标题 */
    }
    .upload-btn, .compress-btn, .download-all-btn, .action-btn {
        width: 100%; /* 按钮占满宽度 */
        margin-bottom: 10px;
    }
    .upload-area, .upload-area-half, .upload-area-full {
        min-height: 150px; /* 进一步减小高度 */
    }
}

/* 当屏幕宽度最大为768px时应用 */
@media (max-width: 768px) {
    /* 页面整体布局调整 */
    body {
        padding: 0; /* 移除body内边距，让内容充分利用屏幕空间 */
        margin: 0; /* 移除默认外边距 */
        height: auto; /* 高度自适应内容，允许页面滚动 */
        overflow-y: auto; /* 允许垂直滚动 */
        overflow-x: hidden; /* 防止横向滚动条，尤其是布局不当导致 */
    }

    .app-container {
        flex-direction: column; /* 主容器从横向布局变为纵向布局 */
        height: auto; /* 高度自适应内容 */
        overflow: visible; /* 允许内容超出容器，特别是长内容 */
        border-radius: 0; /* 移除圆角，全屏显示，更适合手机边缘 */
        border: none; /* 移除边框，保持简洁 */
        min-height: 100vh; /* 确保app-container在内容少时也能撑满屏幕高度 */
        box-shadow: none; /* 移除阴影，更适合移动端简洁风格 */
        backdrop-filter: none; /* 移除毛玻璃效果，提升移动端性能 */
        -webkit-backdrop-filter: none;
        background: var(--bg-color); /* 手机上直接使用背景色，避免复杂渲染 */
    }

    /* 侧边导航栏（在手机上通常变为顶部导航或隐藏） */
    .sidebar {
        width: 100%; /* 宽度撑满 */
        height: auto; /* 高度自适应内容 */
        min-height: 60px; /* 设置最小高度，作为顶部栏 */
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2); /* 顶部栏阴影 */
        flex-direction: row; /* 内部元素横向排列 */
        align-items: center; /* 垂直居中 */
        padding: 10px 20px; /* 调整内边距 */
        justify-content: space-between; /* 元素两端对齐，例如logo和菜单图标 */
        border-right: none; /* 移除右边框 */
        border-bottom: 1px solid var(--glass-border); /* 增加底部边框 */
        position: sticky; /* 顶部固定，用户滚动时导航可见 */
        top: 0;
        z-index: 100; /* 确保在其他内容之上 */
        background-color: var(--bg-color); /* 确保顶部栏有背景色 */
        backdrop-filter: none; /* 手机上禁用毛玻璃，提升性能 */
        -webkit-backdrop-filter: none;
    }

    .logo {
        margin-bottom: 0; /* 移除底部外边距 */
        font-size: 1.5rem; /* 调整字体大小，更适合顶部栏 */
        text-align: left; /* Logo靠左显示 */
    }
    
    /* 显示汉堡菜单 */
    .hamburger-menu {
        display: block;
    }

    .main-nav {
        display: none; /* 默认隐藏 */
    }
    
    /* 当显示菜单时的样式 */
    .main-nav.show-mobile-nav {
        display: block;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: rgba(22, 22, 22, 0.95);
        z-index: 99;
        padding: 10px 0;
        box-shadow: 0 4px 10px rgba(0,0,0,0.3);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
    }
    
    /* 移动端菜单项样式 */
    .main-nav.show-mobile-nav ul {
        padding: 0;
        margin: 0;
    }
    
    .main-nav.show-mobile-nav li {
        margin: 0;
        border-bottom: 1px solid var(--glass-border);
    }
    
    .main-nav.show-mobile-nav .nav-link {
        padding: 15px 20px; /* 增大点击区域 */
        display: block;
        text-align: left;
        border-radius: 0;
    }

    .sidebar footer {
        display: none; /* 隐藏页脚，节省空间 */
    }

    /* 主内容区域 */
    .content-area {
        flex-grow: 1; /* 占据剩余空间 */
        height: auto; /* 高度自适应内容 */
        overflow-y: visible; /* 允许内容滚动，因为body也允许滚动了 */
        padding: 20px; /* 调整内边距，提供内容呼吸空间 */
        margin: 0; /* 移除外边距 */
        width: 100%; /* 宽度撑满 */
        box-sizing: border-box; /* 确保padding不会撑开宽度 */
    }

    /* --- 定制滚动条样式 (针对手机不再需要，因为通常是原生滚动) --- */
    /* 可以在此取消或简化，因为手机浏览器通常有自己的平滑滚动条 */
    .content-area::-webkit-scrollbar {
        width: 0; /* 隐藏滚动条 */
        height: 0;
    }


    /* --- 工具容器通用样式 --- */
    .tool-container {
        max-width: 100%; /* 宽度撑满，适应手机屏幕 */
        margin: 0; /* 移除自动外边距 */
        padding: 0 10px; /* 左右留一点边距 */
        box-sizing: border-box; /* 确保padding不会撑开宽度 */
    }

    header {
        margin-bottom: 20px; /* 减小底部外边距 */
        padding-bottom: 15px; /* 减小底部内边距 */
    }

    header h1 {
        font-size: 2rem; /* 调整标题字体大小 */
    }

    header p {
        font-size: 1rem; /* 调整段落字体大小 */
    }

    /* -- 按钮与上传区域 -- */
    .upload-area, .upload-area-half, .upload-area-full {
        padding: 20px; /* 减小内边距 */
        min-height: 180px; /* 减小最小高度 */
        margin-bottom: 20px; /* 确保上传区域之间有间距 */
    }
    .upload-area p, .upload-area-half p, .upload-area-full p {
        font-size: 0.9rem; /* 调整字体大小 */
        margin-top: 10px;
    }

    .upload-icon {
        font-size: 2.5rem; /* 调整图标大小 */
        margin-bottom: 10px;
    }

    .upload-btn, .compress-btn, .download-all-btn, .action-btn {
        padding: 10px 20px; /* 减小按钮内边距，增大可点击区域 */
        font-size: 1rem; /* 调整字体大小 */
        border-radius: 8px; /* 调整圆角 */
        box-shadow: 0 2px 10px rgba(0, 122, 255, 0.2); /* 减小阴影 */
    }
    .download-btn {
        padding: 6px 12px; /* 减小下载按钮内边距 */
        font-size: 0.85rem; /* 调整字体大小 */
        border-radius: 6px; /* 调整圆角 */
    }


    /* -- 结果与其他组件 -- */
    .results-area {
        margin-top: 20px; /* 减小顶部外边距 */
    }

    .result-item {
        flex-direction: column; /* 结果项在手机上改为垂直堆叠 */
        align-items: flex-start; /* 左对齐 */
        padding: 12px; /* 减小内边距 */
        margin-bottom: 8px; /* 减小底部外边距 */
    }

    .result-item img {
        width: 50px; /* 减小缩略图尺寸 */
        height: 50px;
        margin-right: 0; /* 移除右侧外边距 */
        margin-bottom: 10px; /* 增加底部外边距 */
    }

    .file-info {
        width: 100%; /* 文件信息区域占据整行 */
    }

    .file-name {
        font-size: 0.95rem; /* 调整字体大小 */
        word-break: break-all; /* 防止长文件名溢出 */
    }

    .size-info {
        font-size: 0.8rem; /* 调整字体大小 */
    }

    /* --- 二维码工具 V3 布局与组件 --- */
    .qr-workspace {
        grid-template-columns: 1fr; /* 单列布局 */
        grid-template-rows: auto auto 1fr; /* 上传区、控制区、预览区 */
        gap: 15px; /* 调整间距 */
    }
    .upload-dual-container {
        flex-direction: column; /* 双上传区垂直堆叠 */
        gap: 15px;
    }
    .upload-area-half {
        width: 100%; /* 宽度撑满 */
        min-height: 120px; /* 进一步减小最小高度 */
        box-sizing: border-box;
    }
    .qr-preview-container {
        grid-column: 1 / 2; /* 仍然占据一列 */
        min-height: 250px; /* 减小最小高度 */
        height: auto;
        padding: 10px; /* 调整内边距 */
    }
    .qr-result-view img {
        max-height: 40vh; /* 进一步限制最大高度 */
    }
    .qr-result-actions {
        flex-direction: column; /* 按钮垂直堆叠 */
        gap: 10px; /* 按钮间距 */
    }
    .qr-controls {
        padding: 15px; /* 减小内边距 */
        margin: 15px auto; /* 减小外边距 */
        gap: 15px; /* 减小控制组间距 */
    }
    .control-group label {
        margin-bottom: 8px; /* 减小标签底部外边距 */
        font-size: 0.95rem;
    }
    .control-group input[type="text"],
    .control-group select {
        padding: 8px; /* 减小输入框和选择框内边距 */
        font-size: 0.9rem;
    }
    .control-group input[type="range"] {
        height: 10px; /* 增大滑块轨道高度，方便触摸 */
    }
    .control-group input[type="range"]::-webkit-slider-thumb,
    .control-group input[type="range"]::-moz-range-thumb {
        width: 24px; /* 增大滑块把手，方便触摸 */
        height: 24px;
    }

    .info-text {
        font-size: 0.8rem; /* 调整字体大小 */
    }

    /* 占位符样式 */
    .placeholder h2 {
        font-size: 1.8rem; /* 调整字体大小 */
    }
    .placeholder p {
        font-size: 1rem; /* 调整字体大小 */
    }

    /* --- 新增：格式转换按钮组 --- */
    .btn-group {
        flex-direction: column; /* 按钮组垂直堆叠 */
        gap: 8px; /* 减小按钮间距 */
        width: 100%; /* 按钮组宽度撑满 */
    }
    .btn-group-item {
        padding: 10px 15px; /* 调整内边距 */
        font-size: 0.9rem; /* 调整字体大小 */
        width: 100%; /* 按钮宽度撑满 */
        box-sizing: border-box; /* 确保padding不会撑开宽度 */
    }
    .format-selector label {
        margin-bottom: 10px; /* 减小标签底部外边距 */
    }

    /* --- 新增: 单项删除按钮 --- */
    .delete-item-btn {
        width: 28px; /* 增大删除按钮尺寸 */
        height: 28px;
        font-size: 16px; /* 增大图标尺寸 */
        line-height: 28px;
        top: 6px; /* 调整位置 */
        right: 6px;
    }
    .delete-btn-overlay {
        width: 32px; /* 增大删除按钮尺寸 */
        height: 32px;
        font-size: 18px;
        line-height: 32px;
        top: 8px;
        right: 8px;
    }

    /* --- 清空按钮调整 --- */
    .action-btn.clear-btn {
        margin-left: 0; /* 移除左侧外边距 */
        margin-top: 10px; /* 如果需要，可以在按钮组中给一个顶部间距 */
    }

    /* 删除此重复样式，已被.split-image-wrapper img替代 */
}

/* --- 新增：格式转换按钮组 --- */
.format-selector {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
}
.format-selector label {
    margin-bottom: 15px;
    font-weight: 600;
}
.btn-group {
    display: flex;
    gap: 10px;
}
.btn-group-item {
    padding: 10px 20px;
    font-size: 1rem;
    font-weight: 500;
    border: 1px solid var(--glass-border);
    background-color: var(--glass-bg);
    color: var(--text-color-muted);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}
.btn-group-item:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--text-color);
}
.btn-group-item.active {
    background-color: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
    box-shadow: 0 2px 10px rgba(0, 122, 255, 0.3);
}

.btn-group-item.disabled {
    background-color: rgba(128, 128, 128, 0.2);
    color: rgba(255, 255, 255, 0.3);
    cursor: not-allowed;
    border-color: rgba(128, 128, 128, 0.1);
}
.btn-group-item.disabled:hover {
    background-color: rgba(128, 128, 128, 0.2);
    color: rgba(255, 255, 255, 0.3);
    transform: none;
}

/* --- 新增: 单项删除按钮 --- */
.delete-item-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background-color: rgba(0,0,0,0.5);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
    font-weight: bold;
    line-height: 24px;
    transition: all 0.2s ease;
    z-index: 5;
}
.delete-item-btn:hover {
    background-color: #ff3b30; /* Apple red */
    transform: scale(1.1);
}
/* result-item 需要相对定位来约束删除按钮 */
.result-item {
    position: relative;
}

/* 添加删除按钮样式 */
.delete-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    border: none;
    font-size: 18px;
    line-height: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.delete-btn:hover {
    background-color: rgba(255, 0, 0, 0.7);
}

/* 自定义大小输入框样式 */
#customSizeContainer {
    margin-top: 8px;
    display: flex;
    align-items: center;
}

#customSizeInput {
    width: 60px;
    padding: 4px;
    margin-right: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

/* --- 新增：清空按钮样式 --- */
.action-btn.clear-btn {
    background-color: #6c757d; /* 灰色 */
    margin-left: 15px;
}
.action-btn.clear-btn:hover {
    background-color: #868e96;
}

/* --- 触摸设备优化 --- */
.touch-device .upload-btn,
.touch-device .compress-btn,
.touch-device .download-all-btn,
.touch-device .action-btn,
.touch-device .btn-group-item,
.touch-device .download-btn {
    min-height: 44px; /* 确保触摸目标至少44px高 */
}

.touch-device .control-group input[type="range"]::-webkit-slider-thumb {
    width: 28px; /* 更大的滑块把手 */
    height: 28px;
}

.touch-device .control-group input[type="range"]::-moz-range-thumb {
    width: 28px;
    height: 28px;
}

/* 防止触摸设备上的缩放问题 */
.touch-device input[type="text"],
.touch-device select {
    font-size: 16px; /* 防止iOS自动缩放 */
}

/* 增强触摸反馈 */
.touch-device .nav-link:active,
.touch-device .btn-group-item:active,
.touch-device .upload-btn:active,
.touch-device .action-btn:active {
    transform: scale(0.97);
    transition: transform 0.1s;
}

/* 大型手机/小型平板 */
@media (min-width: 769px) and (max-width: 1024px) {
    .sidebar {
        width: 200px; /* 稍微减小侧边栏宽度 */
    }
    
    .logo {
        font-size: 1.6rem; /* 调整logo大小 */
    }
    
    .content-area {
        padding: 30px; /* 调整内边距 */
    }
    
    .tool-container {
        max-width: 1200px; /* 调整最大宽度 */
    }
}

/* 加载指示器样式 */
.loading-indicator {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 100;
    border-radius: 12px;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-indicator p {
    color: white;
    font-size: 1.1rem;
    font-weight: 500;
}

/* --- 图片压缩选项样式 --- */
.compression-options {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid var(--glass-border);
}

.option-group {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
}

.option-group:last-child {
    margin-bottom: 0;
}

.option-group input[type="radio"] {
    margin-right: 10px;
}

.option-group label {
    margin-right: 15px;
    font-weight: 500;
}

.option-group select {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
    padding: 6px 10px;
    border-radius: 6px;
    margin: 0 10px;
    cursor: pointer;
}

.option-group select:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.size-hint {
    font-size: 0.85rem;
    color: var(--text-color-muted);
    margin-left: 10px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .option-group {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .option-group label {
        margin-bottom: 8px;
    }
    
    .option-group select {
        margin: 8px 0;
    }
    
    .size-hint {
        margin-left: 0;
        margin-top: 5px;
        display: block;
    }
}

/* 添加feature-intro-container样式 */
.feature-intro-container {
    margin: 20px auto;
    max-width: 1200px;
    width: 100%;
}

/* 修改功能简介样式，使其更加醒目 */
.feature-intro {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 20px 25px 20px 40px;
    margin: 20px 0;
    border: 1px solid var(--glass-border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    position: relative;
    z-index: 5;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    list-style-position: outside;
}

/* 简介标题样式 */
.intro-header {
    position: absolute;
    top: -12px;
    left: 20px;
    background: var(--accent-gradient);
    padding: 2px 15px;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 500;
    color: black;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.feature-intro li {
    margin: 10px 0;
    color: #f0f0f0;
    font-size: 1rem;
    line-height: 1.6;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    list-style-type: none;
    position: relative;
}

.feature-intro li::before {
    content: "•";
    position: absolute;
    left: -20px;
    color: var(--accent-color);
    font-size: 1.2rem;
    line-height: 1;
}

/* 语言切换相关样式 */
html[lang="zh"] [lang="en"] {
    display: none !important;
}

html[lang="en"] [lang="zh"] {
    display: none !important;
}

@media (max-width: 768px) {
    .feature-intro {
        padding: 15px 15px 15px 35px;
        margin: 15px 10px;
    }
    
    .feature-intro li {
        font-size: 0.9rem;
    }
}

/* 缩略图功能特殊样式 */
.replace-upload-area {
    margin-bottom: 20px;
}

.replace-upload-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 0 5px;
}

.replace-upload-header h3 {
    margin: 0;
    color: var(--text-color);
    font-size: 1.2rem;
    font-weight: 600;
}

.upload-area-small {
    min-height: 120px;
    padding: 20px;
    margin-bottom: 10px;
}

.upload-area-small .upload-icon {
    width: 32px;
    height: 32px;
}

.upload-area-small p {
    font-size: 0.9rem;
    margin-top: 10px;
}

.image-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 10px;
    position: relative;
    transition: all 0.3s ease;
}

.image-item:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent-color);
}

.image-item img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
}

.image-item-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.image-item-name {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
    word-break: break-word;
}

.image-item-info > div:not(.image-item-name) {
    font-size: 0.85rem;
    color: var(--text-color-muted);
}

.image-item-remove {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 28px;
    height: 28px;
    border: none;
    background: rgba(255, 59, 48, 0.9);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    opacity: 0;
}

.image-item:hover .image-item-remove {
    opacity: 1;
}

.image-item-remove:hover {
    background: rgba(255, 59, 48, 1);
    transform: scale(1.1);
}

.image-item-remove svg {
    width: 14px;
    height: 14px;
}

.preview-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.preview-image-container {
    text-align: center;
}

.preview-image-container h4 {
    margin: 0 0 10px 0;
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 600;
}

.preview-image {
    max-width: 100%;
    max-height: 200px;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
}

.preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    color: var(--text-color-muted);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
}

.preview-placeholder svg {
    margin-bottom: 15px;
    color: var(--text-color-muted);
}

.preview-placeholder p {
    margin: 0;
    font-size: 0.9rem;
}

.clear-btn {
    background: rgba(255, 215, 0, 0.1);
    color: #f5d100;
    border: 1px solid rgba(255, 215, 0, 0.3);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.clear-btn:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: rgba(255, 215, 0, 0.5);
    color: #ffea00;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .preview-images {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .replace-upload-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .image-item {
        padding: 12px;
        gap: 12px;
    }
    
    .image-item img {
        width: 50px;
        height: 50px;
    }
    
    .image-item-remove {
        position: static;
        opacity: 1;
        margin-left: auto;
    }
}

/* 上传区域拖拽样式 */
.upload-area, .upload-area-half, .upload-area-full, .upload-area-small {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    border: 2px dashed var(--glass-border);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: rgba(255, 255, 255, 0.03);
    margin-bottom: 20px;
}

.upload-area p, .upload-area-half p, .upload-area-full p, .upload-area-small p {
    margin-top: 15px;
    color: var(--text-color-muted);
}

.upload-area:hover, .upload-area.drag-over,
.upload-area-half:hover, .upload-area-half.drag-over,
.upload-area-full:hover, .upload-area-full.drag-over,
.upload-area-small:hover, .upload-area-small.drag-over {
    border-color: var(--accent-color);
    background-color: rgba(255, 215, 0, 0.05);
}/* 
===== 主页样式 - 优化版功能展示设计 ===== */

/* 主页容器 */
.home-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    gap: 50px;
}

/* 主页标题区域 */
.home-header {
    text-align: center;
    margin-bottom: 30px;
}

.home-title {
    font-size: 2.8rem;
    margin-bottom: 15px;
    background: linear-gradient(45deg, #f5d100, #f0a500);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.home-subtitle {
    font-size: 1.3rem;
    color: #e0e0e0;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.6;
    opacity: 0.9;
}

/* 功能卡片网格 - 优化布局 */
.features-section {
    width: 100%;
    margin-bottom: 60px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 0 auto;
    max-width: 1200px;
    padding: 0 20px;
}

/* 功能卡片样式 - 增强版 */
.feature-card {
    background: rgba(30, 30, 40, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 215, 0, 0.25);
    border-radius: 16px;
    padding: 30px 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 4px 20px rgba(0, 0, 0, 0.3),
        0 1px 3px rgba(255, 215, 0, 0.1);
    min-height: 200px;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.08), rgba(255, 255, 255, 0.05));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 
        0 12px 40px rgba(0, 0, 0, 0.4),
        0 4px 15px rgba(255, 215, 0, 0.2);
    border-color: rgba(255, 215, 0, 0.5);
}

.feature-card:hover::before {
    opacity: 1;
}

/* 卡片内部元素样式 - 增强版 */
.feature-icon {
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    background: rgba(255, 215, 0, 0.12);
    border-radius: 50%;
    padding: 15px;
    transition: all 0.4s ease;
    position: relative;
}

.feature-card:hover .feature-icon {
    background: rgba(255, 215, 0, 0.25);
    transform: scale(1.15) rotate(5deg);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
    stroke: #f5d100;
    transition: all 0.4s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.feature-card:hover .feature-icon svg {
    stroke: #ffea00;
    filter: drop-shadow(0 4px 8px rgba(255, 215, 0, 0.4));
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 15px 0 10px 0;
    color: #f0f0f0;
    transition: color 0.3s ease;
    line-height: 1.3;
}

.feature-card:hover .feature-title {
    color: #f5d100;
}

.feature-description {
    font-size: 0.95rem;
    color: #b8b8b8;
    margin-top: 8px;
    line-height: 1.5;
    opacity: 0.9;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-description {
    color: #d0d0d0;
    opacity: 1;
}

/* 智能上传区域样式 - 增强版 */
.upload-section {
    width: 100%;
    margin: 40px 0;
}

.smart-upload-area {
    background: rgba(30, 30, 40, 0.8);
    backdrop-filter: blur(12px);
    border: 2px dashed rgba(255, 215, 0, 0.4);
    border-radius: 16px;
    padding: 50px 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    cursor: pointer;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    max-width: 1200px;
    margin: 0 auto;
}

.smart-upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.smart-upload-area:hover {
    border-color: rgba(255, 215, 0, 0.7);
    background: rgba(40, 40, 50, 0.9);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.smart-upload-area:hover::before {
    opacity: 1;
}

.smart-upload-area .upload-icon {
    width: 70px;
    height: 70px;
    stroke: #f5d100;
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.smart-upload-area:hover .upload-icon {
    transform: scale(1.1);
    stroke: #ffea00;
}

.smart-upload-area h3 {
    font-size: 1.6rem;
    margin-bottom: 12px;
    color: #f0f0f0;
    font-weight: 600;
}

.smart-upload-area p {
    color: #c0c0c0;
    max-width: 400px;
    margin: 0 auto;
    font-size: 1.05rem;
    line-height: 1.5;
}

/* 功能选择面板 */
.function-selection-panel {
    background: rgba(30, 30, 40, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 30px;
    margin-top: 25px;
    border: 1px solid rgba(255, 215, 0, 0.3);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.4);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.function-selection-panel h3 {
    text-align: center;
    margin-bottom: 25px;
    color: #f5d100;
    font-size: 1.3rem;
    font-weight: 600;
}

.function-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    justify-content: center;
}

.function-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 18px 15px;
    background: rgba(50, 50, 60, 0.8);
    border: 1px solid rgba(255, 215, 0, 0.25);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 110px;
}

.function-btn:hover {
    background: rgba(60, 60, 70, 0.95);
    border-color: rgba(255, 215, 0, 0.5);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.function-btn svg {
    width: 32px;
    height: 32px;
    stroke: #f5d100;
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.function-btn:hover svg {
    stroke: #ffea00;
    transform: scale(1.1);
}

.function-btn span {
    font-size: 0.95rem;
    color: #e0e0e0;
    font-weight: 500;
    transition: color 0.3s ease;
}

.function-btn:hover span {
    color: #f0f0f0;
}

/* 用户反馈区域 */
.feedback-section {
    width: 100%;
    margin-top: 50px;
    padding: 30px 0;
}

.feedback-container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(30, 30, 40, 0.8);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 35px 30px;
    border: 1px solid rgba(255, 215, 0, 0.25);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.feedback-container h3 {
    text-align: center;
    margin-bottom: 12px;
    color: #f5d100;
    font-size: 1.5rem;
    font-weight: 600;
}

.feedback-container p {
    text-align: center;
    color: #c0c0c0;
    margin-bottom: 25px;
    font-size: 1.05rem;
    line-height: 1.5;
}

#giscus-container {
    width: 100%;
}

.giscus-loading {
    text-align: center;
    padding: 30px;
    color: #b0b0b0;
    font-size: 1.1rem;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .home-container {
        padding: 30px 15px;
        gap: 40px;
    }
    
    .home-title {
        font-size: 2.2rem;
    }
    
    .home-subtitle {
        font-size: 1.1rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 10px;
    }
    
    .feature-card {
        padding: 25px 20px;
        min-height: 180px;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
    }
    
    .smart-upload-area {
        padding: 40px 20px;
    }
    
    .function-btn {
        min-width: 90px;
        padding: 15px 12px;
    }
    
    .feedback-container {
        padding: 25px 20px;
    }
}

@media (max-width: 480px) {
    .home-title {
        font-size: 1.9rem;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
    }
    
    .feature-title {
        font-size: 1.2rem;
    }
    
    .feature-description {
        font-size: 0.9rem;
    }
    
    .smart-upload-area .upload-icon {
        width: 60px;
        height: 60px;
    }
}/* 智
能上传状态样式 */
.smart-upload-area.uploading {
    border-color: rgba(255, 215, 0, 0.8);
    background: rgba(40, 40, 50, 0.95);
    pointer-events: none;
}

.smart-upload-area.error {
    border-color: rgba(255, 59, 48, 0.8);
    background: rgba(60, 30, 30, 0.9);
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* 上传进度样式 */
.upload-progress {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.upload-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 215, 0, 0.2);
    border-top: 4px solid #f5d100;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.upload-progress h3 {
    color: #f5d100;
    margin: 0;
    font-size: 1.3rem;
    font-weight: 600;
}

.upload-progress p {
    color: #e0e0e0;
    margin: 0;
    font-size: 1rem;
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 400px;
    width: 100%;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    border: 1px solid rgba(255, 215, 0, 0.2);
}

.file-name {
    color: #f0f0f0;
    font-size: 0.9rem;
    font-weight: 500;
    flex: 1;
    margin-right: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-size {
    color: #b0b0b0;
    font-size: 0.8rem;
    font-weight: 400;
}

/* 上传错误样式 */
.upload-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    color: #ff6b6b;
}

.upload-error svg {
    stroke: #ff6b6b;
    filter: drop-shadow(0 2px 4px rgba(255, 107, 107, 0.3));
}

.upload-error h3 {
    color: #ff6b6b;
    margin: 0;
    font-size: 1.3rem;
    font-weight: 600;
}

.upload-error p {
    color: #ffb3b3;
    margin: 0;
    text-align: center;
    font-size: 1rem;
    line-height: 1.4;
}

/* 功能选择面板增强动画 */
.function-selection-panel {
    animation: slideUp 0.4s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式优化 */
@media (max-width: 768px) {
    .file-list {
        max-width: 100%;
    }
    
    .file-item {
        padding: 6px 10px;
    }
    
    .file-name {
        font-size: 0.85rem;
    }
    
    .file-size {
        font-size: 0.75rem;
    }
    
    .upload-spinner {
        width: 40px;
        height: 40px;
        border-width: 3px;
    }
    
    .upload-progress h3 {
        font-size: 1.1rem;
    }
    
    .upload-error h3 {
        font-size: 1.1rem;
    }
}/*
 增强的功能选择面板样式 */
.function-panel-close {
    position: absolute;
    top: 15px;
    right: 15px;
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: #f0f0f0;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.function-panel-close:hover {
    background: rgba(255, 59, 48, 0.8);
    border-color: rgba(255, 59, 48, 0.9);
    transform: scale(1.1);
}

.selected-files-info {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 215, 0, 0.2);
}

.selected-files-info p {
    margin: 0 0 10px 0;
    color: #f5d100;
    font-weight: 600;
    font-size: 1rem;
}

.selected-files-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.selected-file-name {
    background: rgba(255, 215, 0, 0.15);
    color: #f0f0f0;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.more-files {
    background: rgba(255, 255, 255, 0.1);
    color: #b0b0b0;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-style: italic;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 增强的功能按钮样式 */
.function-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 15px;
    background: rgba(50, 50, 60, 0.8);
    border: 1px solid rgba(255, 215, 0, 0.25);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 120px;
    position: relative;
    overflow: hidden;
}

.function-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.function-btn:hover {
    background: rgba(60, 60, 70, 0.95);
    border-color: rgba(255, 215, 0, 0.5);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.function-btn:hover::before {
    opacity: 1;
}

.function-btn-icon {
    margin-bottom: 12px;
    transition: all 0.3s ease;
}

.function-btn:hover .function-btn-icon {
    transform: scale(1.15);
}

.function-btn-icon svg {
    width: 32px;
    height: 32px;
    stroke: #f5d100;
    transition: all 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.function-btn:hover .function-btn-icon svg {
    stroke: #ffea00;
    filter: drop-shadow(0 4px 8px rgba(255, 215, 0, 0.4));
}

.function-btn span {
    font-size: 0.95rem;
    color: #e0e0e0;
    font-weight: 600;
    transition: color 0.3s ease;
    margin-bottom: 6px;
    text-align: center;
}

.function-btn:hover span {
    color: #f0f0f0;
}

.function-btn-desc {
    font-size: 0.8rem;
    color: #a0a0a0;
    text-align: center;
    line-height: 1.3;
    transition: color 0.3s ease;
    opacity: 0.8;
}

.function-btn:hover .function-btn-desc {
    color: #c0c0c0;
    opacity: 1;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .function-panel-close {
        top: 10px;
        right: 10px;
        width: 28px;
        height: 28px;
        font-size: 16px;
    }
    
    .selected-files-info {
        padding: 12px;
        margin-bottom: 15px;
    }
    
    .selected-files-info p {
        font-size: 0.9rem;
    }
    
    .selected-file-name,
    .more-files {
        font-size: 0.8rem;
        padding: 3px 6px;
    }
    
    .function-btn {
        min-width: 100px;
        padding: 15px 12px;
    }
    
    .function-btn-icon svg {
        width: 28px;
        height: 28px;
    }
    
    .function-btn span {
        font-size: 0.9rem;
    }
    
    .function-btn-desc {
        font-size: 0.75rem;
    }
    
    .function-buttons {
        gap: 12px;
    }
}

@media (max-width: 480px) {
    .selected-files-list {
        flex-direction: column;
        gap: 6px;
    }
    
    .function-btn {
        min-width: 90px;
        padding: 12px 10px;
    }
    
    .function-btn-icon svg {
        width: 24px;
        height: 24px;
    }
    
    .function-btn span {
        font-size: 0.85rem;
    }
    
    .function-btn-desc {
        font-size: 0.7rem;
    }
}/* 浮动
快捷功能按钮 - Material Design风格 */
.floating-action-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: 15px;
}

/* 主浮动按钮 */
.fab-main {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f5d100, #ffea00);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(245, 209, 0, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.fab-main::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.fab-main:hover::before {
    opacity: 1;
}

.fab-main:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(245, 209, 0, 0.6);
}

.fab-main:active {
    transform: scale(0.95);
}

.fab-main svg {
    width: 28px;
    height: 28px;
    stroke: #1a1a1a;
    stroke-width: 2.5;
    transition: all 0.3s ease;
}

.fab-main.expanded svg {
    transform: rotate(45deg);
}

/* 子浮动按钮容器 */
.fab-submenu {
    display: flex;
    flex-direction: column-reverse;
    gap: 12px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.fab-submenu.expanded {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* 子浮动按钮 */
.fab-sub {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(40, 40, 50, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 215, 0, 0.3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.fab-sub::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(255, 215, 0, 0.05));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.fab-sub:hover::before {
    opacity: 1;
}

.fab-sub:hover {
    transform: scale(1.1);
    border-color: rgba(255, 215, 0, 0.6);
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.2);
}

.fab-sub:active {
    transform: scale(0.9);
}

.fab-sub svg {
    width: 22px;
    height: 22px;
    stroke: #e0e0e0;
    stroke-width: 2;
    transition: all 0.3s ease;
}

.fab-sub:hover svg {
    stroke: #f5d100;
    transform: scale(1.1);
}

/* 浮动按钮标签 */
.fab-label {
    position: absolute;
    right: 60px;
    background: rgba(20, 20, 30, 0.95);
    backdrop-filter: blur(8px);
    color: #e0e0e0;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255, 215, 0, 0.2);
    pointer-events: none;
}

.fab-sub:hover .fab-label {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

/* 浮动按钮动画延迟 */
.fab-submenu .fab-sub:nth-child(1) {
    transition-delay: 0.05s;
}

.fab-submenu .fab-sub:nth-child(2) {
    transition-delay: 0.1s;
}

.fab-submenu .fab-sub:nth-child(3) {
    transition-delay: 0.15s;
}

.fab-submenu .fab-sub:nth-child(4) {
    transition-delay: 0.2s;
}

.fab-submenu .fab-sub:nth-child(5) {
    transition-delay: 0.25s;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .floating-action-button {
        bottom: 20px;
        right: 20px;
        gap: 12px;
    }
    
    .fab-main {
        width: 56px;
        height: 56px;
    }
    
    .fab-main svg {
        width: 24px;
        height: 24px;
    }
    
    .fab-sub {
        width: 44px;
        height: 44px;
    }
    
    .fab-sub svg {
        width: 20px;
        height: 20px;
    }
    
    .fab-label {
        right: 55px;
        font-size: 0.8rem;
        padding: 6px 10px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    .floating-action-button {
        bottom: 15px;
        right: 15px;
        gap: 10px;
    }
    
    .fab-main {
        width: 52px;
        height: 52px;
    }
    
    .fab-sub {
        width: 40px;
        height: 40px;
    }
    
    .fab-sub svg {
        width: 18px;
        height: 18px;
    }
    
    .fab-label {
        display: none; /* 在超小屏幕上隐藏标签 */
    }
}

/* 浮动按钮脉冲动画（用于吸引注意） */
@keyframes fabPulse {
    0% {
        box-shadow: 0 6px 20px rgba(245, 209, 0, 0.4);
    }
    50% {
        box-shadow: 0 6px 20px rgba(245, 209, 0, 0.8);
    }
    100% {
        box-shadow: 0 6px 20px rgba(245, 209, 0, 0.4);
    }
}

.fab-main.pulse {
    animation: fabPulse 2s infinite;
}/* 错
误通知样式 */
.error-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    max-width: 400px;
    animation: slideInRight 0.3s ease-out;
}

.error-notification-content {
    background: rgba(60, 30, 30, 0.95);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 59, 48, 0.5);
    border-radius: 8px;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 8px 25px rgba(255, 59, 48, 0.3);
}

.error-notification-content svg {
    flex-shrink: 0;
    stroke: #ff6b6b;
}

.error-notification-content span {
    color: #ffcccc;
    font-size: 0.9rem;
    flex: 1;
}

.error-notification-close {
    background: none;
    border: none;
    color: #ff6b6b;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease;
}

.error-notification-close:hover {
    background: rgba(255, 59, 48, 0.2);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 移动端错误通知优化 */
@media (max-width: 768px) {
    .error-notification {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
    
    .error-notification-content {
        padding: 12px 15px;
        font-size: 0.85rem;
    }
}/* 浏览器升级通
知样式 */
.browser-upgrade-notification {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.browser-upgrade-content {
    background: rgba(30, 30, 40, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 12px;
    max-width: 500px;
    width: 100%;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.browser-upgrade-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.browser-upgrade-header svg {
    stroke: #ffb84d;
    flex-shrink: 0;
}

.browser-upgrade-header h3 {
    color: #f0f0f0;
    margin: 0;
    font-size: 1.3rem;
}

.browser-upgrade-body p {
    color: #d0d0d0;
    margin-bottom: 15px;
    line-height: 1.5;
}

.browser-upgrade-body ul {
    background: rgba(60, 30, 30, 0.5);
    border-radius: 6px;
    padding: 15px 20px;
    margin: 15px 0;
    border-left: 3px solid #ff6b6b;
}

.browser-upgrade-body li {
    color: #ffcccc;
    margin-bottom: 5px;
}

.recommended-browsers {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin: 15px 0;
}

.recommended-browsers a {
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    color: #f5d100;
    padding: 8px 15px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.recommended-browsers a:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: rgba(255, 215, 0, 0.5);
    transform: translateY(-2px);
}

.browser-upgrade-actions {
    margin-top: 25px;
    text-align: center;
}

.btn-continue {
    background: rgba(100, 100, 110, 0.7);
    border: 1px solid rgba(150, 150, 160, 0.5);
    color: #e0e0e0;
    padding: 10px 25px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.btn-continue:hover {
    background: rgba(120, 120, 130, 0.8);
    border-color: rgba(170, 170, 180, 0.7);
}

/* Giscus备用联系方式样式 */
.giscus-fallback {
    background: rgba(40, 40, 50, 0.7);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    border: 1px solid rgba(255, 215, 0, 0.2);
}

.giscus-fallback-content svg {
    stroke: #f5d100;
    margin-bottom: 15px;
}

.giscus-fallback-content h4 {
    color: #f0f0f0;
    margin: 0 0 10px 0;
    font-size: 1.2rem;
}

.giscus-fallback-content p {
    color: #d0d0d0;
    margin-bottom: 20px;
}

.contact-methods {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    color: #f5d100;
    padding: 10px 15px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.contact-method:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: rgba(255, 215, 0, 0.5);
    transform: translateY(-2px);
}

.contact-method svg {
    stroke: currentColor;
}

/* 移动端优化 */
@media (max-width: 768px) {
    .browser-upgrade-content {
        padding: 20px;
        margin: 10px;
    }
    
    .browser-upgrade-header {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .recommended-browsers {
        justify-content: center;
    }
    
    .contact-methods {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-method {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }
}

/* 欢迎词区域样式 */
.welcome-section {
    width: 100%;
    margin: 30px 0 40px 0;
    padding: 0 20px;
}

.welcome-container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(30, 30, 40, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 215, 0, 0.25);
    border-radius: 16px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.welcome-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05), transparent);
    pointer-events: none;
}

.welcome-content {
    position: relative;
    z-index: 1;
}

.welcome-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: linear-gradient(45deg, #f5d100, #ffea00);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.02em;
}

.welcome-message {
    font-size: 1.3rem;
    color: #e0e0e0;
    margin: 0;
    line-height: 1.6;
    opacity: 0.95;
}

/* 功能简介区域样式 */
.features-intro-section {
    width: 100%;
    margin: 40px 0;
    padding: 0 20px;
}

.features-intro-container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(30, 30, 40, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 215, 0, 0.25);
    border-radius: 16px;
    padding: 40px 30px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.features-intro-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.05), transparent);
    pointer-events: none;
}

.features-intro-title {
    font-size: 1.8rem;
    font-weight: 600;
    color: #f5d100;
    text-align: center;
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.features-intro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    position: relative;
    z-index: 1;
}

.intro-item {
    background: rgba(50, 50, 60, 0.6);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.intro-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.intro-icon svg {
    color: rgba(255, 215, 0, 0.8);
    transition: color 0.3s ease;
}

.intro-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.08), transparent);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.intro-item:hover {
    border-color: rgba(255, 215, 0, 0.4);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.intro-item:hover .intro-icon {
    background: rgba(255, 215, 0, 0.2);
    border-color: rgba(255, 215, 0, 0.5);
    transform: scale(1.05);
}

.intro-item:hover .intro-icon svg {
    color: rgba(255, 215, 0, 1);
}

.intro-item:hover::before {
    opacity: 1;
}

.intro-item h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #f0f0f0;
    margin: 0 0 12px 0;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.intro-item:hover h4 {
    color: #f5d100;
}

.intro-item p {
    font-size: 0.95rem;
    color: #c0c0c0;
    margin: 0;
    line-height: 1.5;
    position: relative;
    z-index: 1;
    transition: color 0.3s ease;
}

.intro-item:hover p {
    color: #d0d0d0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .welcome-section {
        margin: 20px 0 30px 0;
        padding: 0 15px;
    }
    
    .welcome-container {
        padding: 30px 20px;
    }
    
    .welcome-title {
        font-size: 1.8rem;
    }
    
    .welcome-message {
        font-size: 1.1rem;
    }
    
    .features-intro-section {
        margin: 30px 0;
        padding: 0 15px;
    }
    
    .features-intro-container {
        padding: 30px 20px;
    }
    
    .features-intro-title {
        font-size: 1.5rem;
    }
    
    .features-intro-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .intro-item {
        padding: 15px;
    }
    
    .intro-item h4 {
        font-size: 1.1rem;
    }
    
    .intro-item p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .welcome-title {
        font-size: 1.6rem;
    }
    
    .welcome-message {
        font-size: 1rem;
    }
    
    .features-intro-title {
        font-size: 1.3rem;
    }
    
    .intro-item h4 {
        font-size: 1rem;
    }
    
    .intro-item p {
        font-size: 0.85rem;
    }
}

/* === 水印功能样式 === */

/* 水印工作区 */
.watermark-workspace {
    margin-top: 30px;
    background: rgba(30, 30, 40, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 215, 0, 0.25);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

/* 水印类型选择器 */
.watermark-type-selector {
    margin-bottom: 30px;
}

.tab-group {
    display: flex;
    background: rgba(50, 50, 60, 0.6);
    border-radius: 10px;
    padding: 4px;
    gap: 4px;
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-color-muted);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
}

.tab-btn.active {
    background: var(--accent-gradient);
    color: #1a1a1a;
    font-weight: 600;
}

.tab-btn svg {
    transition: transform 0.3s ease;
}

.tab-btn.active svg {
    transform: scale(1.1);
}

/* 工作区内容布局 */
.workspace-content {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 30px;
    align-items: start;
}

/* 预览区域 */
.preview-section {
    background: rgba(20, 20, 30, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;  /* 增加预览区域的最小高度到视口高度的60% */
    width: 100%;  /* 确保预览区域占满可用宽度 */
}

.canvas-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

#watermarkCanvas {
    max-width: 95%;  /* 使用容器的95%宽度 */
    max-height: 80vh;  /* 使用视口高度的80% */
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

#watermarkCanvas:hover {
    transform: scale(1.02);
}

/* 控制面板 */
.controls-section {
    background: rgba(40, 40, 50, 0.7);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 12px;
    padding: 25px;
    max-height: 80vh;
    overflow-y: auto;
}

/* 水印控件组 */
.watermark-controls {
    display: block;
}

.control-group {
    margin-bottom: 20px;
}

.control-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-color);
    font-weight: 500;
    font-size: 0.9rem;
}

.control-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

/* 输入控件样式 */
.watermark-controls input[type="text"],
.watermark-controls input[type="number"],
.watermark-controls textarea,
.watermark-controls select {
    width: 100%;
    padding: 10px;
    background: rgba(20, 20, 30, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.watermark-controls input:focus,
.watermark-controls textarea:focus,
.watermark-controls select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(245, 209, 0, 0.2);
}

.watermark-controls textarea {
    resize: vertical;
    min-height: 50px;
}

/* 滑块输入组合 */
.input-with-slider {
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-with-slider input[type="range"] {
    flex: 1;
    margin: 0;
}

.input-with-slider input[type="number"] {
    width: 70px;
    flex-shrink: 0;
}

/* 滑块样式 */
input[type="range"] {
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    height: 6px;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 3px 8px rgba(245, 209, 0, 0.4);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

/* 颜色选择器 */
input[type="color"] {
    width: 60px;
    height: 40px;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    cursor: pointer;
    background: transparent;
}

input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

/* 位置网格 */
.position-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-top: 10px;
}

.position-btn {
    width: 40px;
    height: 40px;
    background: rgba(60, 60, 70, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.position-btn:hover {
    background: rgba(80, 80, 90, 0.9);
    border-color: var(--accent-color);
    transform: scale(1.1);
}

.position-btn.active {
    background: var(--accent-color);
    color: #1a1a1a;
    border-color: var(--accent-color);
    font-weight: bold;
}

/* 复选框样式 */
.watermark-controls input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    accent-color: var(--accent-color);
}

.watermark-controls label:has(input[type="checkbox"]) {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: 0;
}

/* 水印图片上传 */
.watermark-image-upload {
    margin-top: 10px;
}

.watermark-image-preview {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 10px;
    background: rgba(20, 20, 30, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    margin-top: 10px;
}

.watermark-image-preview img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 按钮样式 */
.upload-btn, .change-image-btn {
    padding: 8px 16px;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 6px;
    color: var(--accent-color);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-btn:hover, .change-image-btn:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: var(--accent-color);
    transform: translateY(-1px);
}

.change-image-btn {
    background: rgba(100, 100, 110, 0.1);
    border-color: rgba(150, 150, 160, 0.3);
    color: var(--text-color-muted);
}

.change-image-btn:hover {
    background: rgba(120, 120, 130, 0.2);
    border-color: rgba(170, 170, 180, 0.5);
    color: var(--text-color);
}

/* 导出控件 */
.export-controls {
    margin-top: 30px;
    padding-top: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 文件信息显示 */
.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    padding: 15px;
    background: rgba(50, 50, 60, 0.6);
    border: 1px solid rgba(255, 215, 0, 0.2);
    border-radius: 8px;
    margin-top: 15px;
}

.file-info span {
    color: var(--text-color);
    font-size: 0.9rem;
}

#mainImageName {
    font-weight: 500;
}

#mainImageSize {
    color: var(--text-color-muted);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .workspace-content {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .controls-section {
        max-height: none;
        order: -1;
    }
    
    .control-row {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .watermark-workspace {
        padding: 20px;
        margin-top: 20px;
    }
    
    .tab-btn {
        padding: 10px 15px;
        font-size: 0.85rem;
        gap: 6px;
    }
    
    .tab-btn svg {
        width: 16px;
        height: 16px;
    }
    
    .controls-section {
        padding: 20px;
    }
    
    .position-grid {
        gap: 6px;
    }
    
    .position-btn {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    
    .file-info {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .watermark-workspace {
        padding: 15px;
    }
    
    .tab-group {
        flex-direction: column;
        gap: 2px;
    }
    
    .tab-btn {
        padding: 8px 12px;
    }
    
    .controls-section {
        padding: 15px;
    }
    
    .control-group {
        margin-bottom: 15px;
    }
    
    .input-with-slider {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    
    .input-with-slider input[type="number"] {
        width: 100%;
    }
    
    .position-btn {
        width: 30px;
        height: 30px;
        font-size: 0.9rem;
    }
    
    .export-controls {
        margin-top: 20px;
        padding-top: 20px;
    }
}

/* =========================== */
/* 缩略图生成功能样式 */
/* =========================== */

.thumbnail-workspace {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.thumbnail-controls-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 24px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.control-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.control-panel h3 {
    margin: 0 0 16px 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-color);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-group label {
    font-weight: 500;
    color: var(--text-color);
    margin-bottom: 8px;
}

/* 预设尺寸按钮 */
.preset-sizes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.preset-btn {
    padding: 8px 12px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-color-muted);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.preset-btn:hover {
    border-color: var(--accent-color);
    color: var(--text-color);
}

.preset-btn.active {
    background: var(--accent-gradient);
    border-color: var(--accent-color);
    color: #000;
    font-weight: 600;
}

/* 自定义尺寸输入 */
.dimension-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.input-group input[type="number"] {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-color);
    border-radius: 6px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.input-group span {
    color: var(--text-color-muted);
    font-size: 0.9rem;
}

.ratio-options {
    margin-top: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-color-muted);
}

.checkbox-label input[type="checkbox"] {
    accent-color: var(--accent-color);
}

/* 输出格式选择 */
#outputFormat {
    padding: 10px 12px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-color);
    border-radius: 6px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

/* 质量控制 */
.quality-control {
    display: flex;
    align-items: center;
    gap: 12px;
}

.quality-control input[type="range"] {
    flex: 1;
    accent-color: var(--accent-color);
}

.quality-value {
    min-width: 40px;
    text-align: center;
    font-weight: 600;
    color: var(--accent-color);
}

.quality-hint {
    font-size: 0.8rem;
    color: var(--text-color-muted);
    text-align: center;
    margin-top: 4px;
}

/* 预览面板 */
.preview-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.preview-panel h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-color);
}

.preview-container {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 24px;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.preview-placeholder {
    text-align: center;
    color: var(--text-color-muted);
}

.preview-placeholder svg {
    margin-bottom: 12px;
    opacity: 0.5;
}

.preview-images {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.preview-image {
    max-width: 150px;
    max-height: 150px;
    width: auto;
    height: auto;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.preview-info {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 16px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.info-item:last-child {
    border-bottom: none;
}

.info-item span:first-child {
    color: var(--text-color-muted);
}

.info-item span:last-child {
    color: var(--text-color);
    font-weight: 600;
}

/* 图片列表面板 */
.image-list-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 24px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.image-list-panel h3 {
    margin: 0 0 16px 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-color);
}

.image-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}

.image-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.image-item img {
    width: 100%;
    max-height: 120px;
    object-fit: contain;
    border-radius: 6px;
    margin-bottom: 12px;
    background-color: rgba(255, 255, 255, 0.1);
}

.image-item-info {
    font-size: 0.9rem;
    color: var(--text-color-muted);
}

.image-item-name {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 4px;
    word-break: break-all;
}

/* 处理进度 */
.progress-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 24px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.progress-panel h3 {
    margin: 0 0 16px 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-color);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    color: var(--text-color-muted);
    font-size: 0.9rem;
}

/* 结果展示 */
.results-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 24px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.results-header h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-color);
}

.results-actions {
    display: flex;
    gap: 12px;
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.result-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 16px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 20px;
}

.result-images {
    display: flex;
    gap: 20px;
    flex: 0 0 180px;
    margin-bottom: 0;
}

.preview-image-container {
    flex: 1;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 200px;
}

.preview-image-container img {
    max-width: 100%;
    max-height: 150px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.result-image-container {
    flex: 1;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.result-image-container h4 {
    margin: 0 0 8px 0;
    font-size: 0.9rem;
    color: var(--text-color-muted);
}

.result-image-container img {
    width: 100%;
    max-height: 80px;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
    border: 1px solid var(--glass-border);
    background-color: rgba(255, 255, 255, 0.1);
}

.result-info {
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0 16px;
    font-size: 0.85rem;
    flex: 1;
}

.result-info-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    padding: 2px 0;
}

.result-info-item span:first-child {
    color: var(--text-color-muted);
}

.result-info-item span:last-child {
    color: var(--text-color);
    font-weight: 600;
}

.result-actions {
    display: flex;
    gap: 8px;
    flex: 0 0 auto;
}

.result-actions button {
    padding: 8px 16px;
    font-size: 0.85rem;
    white-space: nowrap;
}

/* 上传格式提示 */
.upload-formats {
    font-size: 0.8rem;
    color: var(--text-color-muted);
    margin-top: 8px;
    text-align: center;
}

/* 缩略图功能响应式设计 */
@media (max-width: 768px) {
    .controls-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .preset-sizes {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dimension-inputs {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
    
    .image-list {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
}

/* === 浮动快捷按钮 (Floating Action Button) === */
.floating-action-button {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
}

.fab-main {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent-gradient);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.3);
    transition: all 0.3s ease;
    color: #000;
    font-size: 24px;
}

.fab-main:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
}

.fab-main:active {
    transform: scale(0.95);
}

.fab-menu {
    position: absolute;
    bottom: 70px;
    right: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.floating-action-button.active .fab-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.fab-item {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    animation: slideInUp 0.3s ease forwards;
}

.fab-item:nth-child(1) { animation-delay: 0.1s; }
.fab-item:nth-child(2) { animation-delay: 0.2s; }
.fab-item:nth-child(3) { animation-delay: 0.3s; }
.fab-item:nth-child(4) { animation-delay: 0.4s; }

.fab-label {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
    color: var(--text-color);
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.fab-item:hover .fab-label {
    opacity: 1;
    transform: translateX(0);
}

.fab-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-color);
    transition: all 0.3s ease;
    font-size: 18px;
}

.fab-btn:hover {
    background: var(--accent-color);
    color: #000;
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.8);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 移动端适配 */
@media (max-width: 768px) {
    .floating-action-button {
        bottom: 20px;
        right: 20px;
    }
    
    .fab-main {
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    .fab-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .fab-label {
        font-size: 0.75rem;
        padding: 6px 10px;
    }
}

/* =============================================
   V2.0增强：图片合成功能样式
   ============================================= */

/* 样式设置控件 */
.style-inputs {
    margin-top: 15px;
}

.style-inputs .input-group {
    margin-bottom: 15px;
}

.style-inputs .input-group label {
    display: block;
    margin-bottom: 5px;
    color: #f0f0f0;
    font-weight: 500;
}

.style-inputs input[type="range"] {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    margin-bottom: 5px;
}

.style-inputs input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #ffd700, #ffed4a);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

.style-inputs input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: linear-gradient(135deg, #ffd700, #ffed4a);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

.style-inputs input[type="color"] {
    width: 100%;
    height: 40px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    background: transparent;
    padding: 0;
}

.style-inputs input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.style-inputs input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 6px;
}

/* 格式选择控件 */
.format-inputs {
    margin-top: 15px;
}

.format-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
    margin-bottom: 15px;
}

.radio-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 15px 10px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(10px);
}

.radio-option:hover {
    border-color: rgba(255, 215, 0, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.1);
}

.radio-option input[type="radio"] {
    margin-bottom: 8px;
    transform: scale(1.2);
}

.radio-option span {
    font-weight: 600;
    color: #f0f0f0;
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.radio-option small {
    color: #b0b0b0;
    font-size: 0.75rem;
    text-align: center;
}

.radio-option input[type="radio"]:checked + span {
    color: #ffd700;
}

.radio-option:has(input[type="radio"]:checked) {
    border-color: #ffd700;
    background: rgba(255, 215, 0, 0.1);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.2);
}

/* 质量控制 */
.quality-control {
    margin-top: 10px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.quality-control label {
    display: block;
    margin-bottom: 8px;
    color: #f0f0f0;
    font-size: 0.9rem;
}

/* 下载成功提示 */
.download-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    background: rgba(40, 40, 40, 0.95);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 12px;
    padding: 0;
    max-width: 350px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(15px);
    transform: translateX(400px);
    transition: all 0.3s ease;
    opacity: 0;
}

.download-toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast-content {
    display: flex;
    align-items: center;
    padding: 15px;
    gap: 12px;
}

.toast-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #4ade80, #22c55e);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    min-width: 0;
}

.toast-title {
    color: #f0f0f0;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 2px;
}

.toast-subtitle {
    color: #b0b0b0;
    font-size: 0.8rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 样式预览增强 */
.layout-canvas {
    transition: all 0.3s ease;
}

.layout-canvas.has-gaps {
    padding: 10px;
}

.drop-slot {
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.drop-slot.styled {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 滑块数值显示 */
.style-inputs span {
    display: inline-block;
    min-width: 40px;
    text-align: right;
    color: #ffd700;
    font-weight: 600;
    font-size: 0.85rem;
    margin-left: 10px;
}

/* V2.1新增：长条模板布局样式 */
.layout-preview.grid-1x3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr;
    gap: 2px;
    width: 60px;
    height: 30px;
}

.layout-preview.grid-3x1 {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    gap: 2px;
    width: 30px;
    height: 60px;
}

/* 长条模板布局生成器 */
.layout-canvas.layout-1x3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    grid-template-rows: 1fr;
    aspect-ratio: 3/1;
}

.layout-canvas.layout-3x1 {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr 1fr;
    aspect-ratio: 1/3;
}

/* V2.1新增：单图编辑面板 */
.image-editor-panel {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 280px;
    background: rgba(0, 0, 0, 0.85);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    padding: 20px;
    z-index: 1000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 215, 0, 0.2);
}

.editor-header h4 {
    margin: 0;
    color: #ffd700;
    font-size: 1.1rem;
}

.close-editor-btn {
    background: none;
    border: none;
    color: #ffd700;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.close-editor-btn:hover {
    background-color: rgba(255, 215, 0, 0.1);
}

.control-group {
    margin-bottom: 15px;
}

.control-group label {
    display: block;
    color: #f0f0f0;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.control-group input[type="range"] {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    margin-bottom: 5px;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, #ffd700, #ffed4a);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 8px rgba(255, 215, 0, 0.3);
}

.position-controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 5px;
    margin-top: 8px;
}

.position-controls .pos-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    color: #ffd700;
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.8rem;
}

.position-controls .pos-btn:hover {
    background: rgba(255, 215, 0, 0.1);
    transform: translateY(-1px);
}

.position-controls .pos-btn[data-direction="up"] {
    grid-column: 2;
    grid-row: 1;
}

.position-controls .pos-btn[data-direction="left"] {
    grid-column: 1;
    grid-row: 2;
}

.position-controls .pos-btn[data-direction="center"] {
    grid-column: 2;
    grid-row: 2;
}

.position-controls .pos-btn[data-direction="right"] {
    grid-column: 3;
    grid-row: 2;
}

.position-controls .pos-btn[data-direction="down"] {
    grid-column: 2;
    grid-row: 3;
}

.reset-btn {
    width: 100%;
    background: rgba(255, 69, 0, 0.8);
    border: none;
    color: white;
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.reset-btn:hover {
    background: rgba(255, 69, 0, 1);
    transform: translateY(-1px);
}

/* 可编辑图片槽位样式 */
.drop-slot.editable {
    cursor: pointer;
    position: relative;
}

.drop-slot.editable::after {
    content: "✏️";
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(255, 215, 0, 0.8);
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.drop-slot.editable:hover::after {
    opacity: 1;
}

.drop-slot.editing {
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.5);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .image-editor-panel {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 90%;
        max-width: 300px;
        right: auto;
    }
}

/* 亮度调整功能样式 */
.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.change-image-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.8rem;
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: 6px;
    color: #f5d100;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.change-image-btn:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: rgba(255, 215, 0, 0.5);
    transform: translateY(-1px);
}

.change-image-btn svg {
    flex-shrink: 0;
}

/* --- 结果预览区域样式，与主图上传区域保持一致 --- */
.result-preview.main-image-size {
    border: 2px solid var(--glass-border);
    border-radius: 12px;
    padding: 20px;
    background: var(--glass-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 220px; /* 与上传区域保持一致的最小高度 */
    margin-top: 20px;
    position: relative;
}

.result-canvas {
    max-width: 100%;
    max-height: 400px; /* 限制最大高度避免过大 */
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    object-fit: contain; /* 保持图片比例，完整显示 */
}

.result-panel h3 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-weight: 600;
    font-size: 1.1rem;
}

.result-actions {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    justify-content: center;
    flex-wrap: wrap;
}