/* 基础样式 - 现代设计系统 3.0 */
:root {
    /* 主色调 - 高级渐变色系 */
    --primary-color: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #4338ca;
    --primary-light-rgb: 99, 102, 241;
    --primary-dark-rgb: 67, 56, 202;
    --primary-gradient: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    --primary-soft-glow: 0 0 20px rgba(var(--primary-light-rgb), 0.3);

    /* 辅助色 - 精致配色方案 */
    --secondary-color: #ec4899;
    --secondary-light: #f472b6;
    --secondary-dark: #db2777;
    --accent-color: #8b5cf6;
    --accent-light: #a78bfa;
    --accent-dark: #7c3aed;
    --success-color: #10b981;
    --success-light: #34d399;
    --warning-color: #f59e0b;
    --warning-light: #fbbf24;
    --error-color: #ef4444;
    --error-light: #f87171;

    /* 文本和背景 - 精致对比度 */
    --text-color: #1e293b;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --card-bg-hover: #f1f5f9;
    --border-color: #e2e8f0;
    --divider-color: #f1f5f9;

    /* 暗色模式 - 高级暗色系统 */
    --dark-bg: #0f172a;
    --dark-card-bg: #1e293b;
    --dark-card-bg-hover: #334155;
    --dark-text: #f1f5f9;
    --dark-text-light: #cbd5e1;
    --dark-text-lighter: #94a3b8;
    --dark-border: #334155;
    --dark-divider: #1e293b;

    /* 设计元素 - 精致细节 */
    --radius-xs: 4px;
    --radius-sm: 8px;
    --radius: 12px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.1);
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 12px 20px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 30px -10px rgba(0, 0, 0, 0.15), 0 15px 15px -8px rgba(0, 0, 0, 0.06);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);

    --shadow-colored: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -2px var(--shadow-color);
    --shadow-colored-lg: 0 20px 25px -5px var(--shadow-color), 0 10px 10px -5px var(--shadow-color);

    /* 动画 - 精致过渡 */
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-ultra-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);

    /* 布局 - 精致间距 */
    --container-width: 1280px;
    --spacing-3xs: 2px;
    --spacing-2xs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 96px;
}

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

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.7;
    font-size: 16px;
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

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

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

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

a.animated-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--primary-light);
    transition: width var(--transition-fast);
}

a.animated-link:hover::after {
    width: 100%;
}

.app-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 10px;
}

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

/* 文本选择样式 */
::selection {
    background-color: var(--primary-light);
    color: white;
}

/* 头部 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    backdrop-filter: blur(10px);
    z-index: 100;
    transition: all var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

body.dark-mode .header {
    background-color: var(--dark-bg);
    border-bottom-color: var(--dark-border);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.logo {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 10;
}

.logo-img {
    height: 42px;
    margin-right: var(--spacing);
    transition: all var(--transition);
    filter: drop-shadow(0 2px 4px rgba(var(--primary-dark-rgb), 0.2));
    position: relative;
}

.logo:hover .logo-img {
    transform: rotate(10deg) scale(1.1);
    filter: drop-shadow(0 4px 8px rgba(var(--primary-dark-rgb), 0.3));
}

.logo h1 {
    font-size: 26px;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.5px;
    position: relative;
    transition: all var(--transition);
}

.logo h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width var(--transition);
    opacity: 0.7;
}

.logo:hover h1::after {
    width: 100%;
}

.nav {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--text-light);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    letter-spacing: -0.2px;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: all var(--transition);
    transform: translateX(-50%);
    opacity: 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(var(--primary-light-rgb), 0.08);
    opacity: 0;
    transition: all var(--transition);
    z-index: -1;
    border-radius: var(--radius-sm);
    transform: scale(0.9);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 80%;
    opacity: 1;
}

.nav-link:hover::after,
.nav-link.active::after {
    opacity: 1;
    transform: scale(1);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* 用户下拉菜单 */
.user-dropdown {
    position: relative;
    margin-right: var(--spacing);
}

.user-dropdown-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-color);
    font-weight: 500;
    transition: all var(--transition-fast);
}

body.dark-mode .user-dropdown-btn {
    color: var(--dark-text);
}

.user-dropdown-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--primary-color);
}

body.dark-mode .user-dropdown-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.user-dropdown-content {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--card-bg);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    min-width: 150px;
    z-index: 100;
    display: none;
    overflow: hidden;
}

body.dark-mode .user-dropdown-content {
    background-color: var(--dark-card-bg);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.user-dropdown:hover .user-dropdown-content {
    display: block;
    animation: fadeIn 0.2s ease-out;
}

.user-dropdown-content a {
    display: block;
    padding: var(--spacing-sm) var(--spacing);
    color: var(--text-color);
    transition: all var(--transition-fast);
}

body.dark-mode .user-dropdown-content a {
    color: var(--dark-text);
}

.user-dropdown-content a:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--primary-color);
}

body.dark-mode .user-dropdown-content a:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

/* 暗色模式切换按钮 */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    transition: all var(--transition-fast);
    margin-left: var(--spacing);
}

.theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--primary-color);
}

body.dark-mode .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}



/* 上传区域 - 现代化设计 */
.upload-container {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow);
    transition: all var(--transition);
    position: relative;
    z-index: 10;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

body.dark-mode .upload-container {
    background-color: var(--dark-card-bg);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
    background: linear-gradient(135deg,
        rgba(var(--primary-light-rgb), 0.03) 0%,
        rgba(var(--primary-dark-rgb), 0.03) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 250px;
}

body.dark-mode .upload-area {
    border-color: var(--dark-border);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
    background: linear-gradient(135deg,
        rgba(var(--primary-light-rgb), 0.05) 0%,
        rgba(var(--primary-dark-rgb), 0.05) 100%);
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg,
        rgba(var(--primary-light-rgb), 0.08),
        rgba(var(--primary-dark-rgb), 0.08));
    opacity: 0;
    transition: opacity var(--transition);
    z-index: -1;
}

.upload-area::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0),
        rgba(255, 255, 255, 0.2),
        rgba(255, 255, 255, 0));
    transform: skewX(-15deg);
    transition: all 0.8s;
    z-index: 1;
    pointer-events: none;
}

.upload-area:hover::before,
.upload-area.drag-over::before {
    opacity: 1;
}

.upload-area:hover::after {
    left: 100%;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: 0 15px 35px rgba(var(--primary-light-rgb), 0.25);
}

.upload-icon {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    transition: all var(--transition);
    background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 15px rgba(var(--primary-light-rgb), 0.3);
}

.upload-icon svg {
    width: 36px;
    height: 36px;
    color: white;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.upload-area:hover .upload-icon {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 10px 25px rgba(var(--primary-light-rgb), 0.4);
}

.upload-text {
    margin-top: var(--spacing-md);
    font-size: 20px;
    color: var(--text-color);
    font-weight: 600;
    transition: all var(--transition);
}

body.dark-mode .upload-text {
    color: var(--dark-text);
}

.upload-hint {
    margin-top: var(--spacing-sm);
    font-size: 15px;
    color: var(--text-light);
    opacity: 0.9;
    max-width: 80%;
    margin-left: auto;
    margin-right: auto;
    transition: all var(--transition);
}

body.dark-mode .upload-hint {
    color: var(--dark-text-light);
}

.browse-text {
    color: var(--primary-color);
    cursor: pointer;
    text-decoration: underline;
}

.file-input {
    display: none;
}

.upload-status {
    margin-top: var(--spacing-md);
    color: var(--text-light);
    font-weight: 500;
    transition: all var(--transition-fast);
}

body.dark-mode .upload-status {
    color: var(--dark-text-light);
}

.upload-status.error {
    color: var(--secondary-color);
}

.upload-status.success {
    color: var(--success-color);
}

/* 上传进度条样式 */
.upload-progress {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-sm);
}

.progress-container {
    width: 100%;
    height: 8px;
    background-color: rgba(var(--primary-light-rgb), 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin: var(--spacing-sm) 0;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 4px;
    transition: width 0.3s ease;
    position: relative;
    overflow: hidden;
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.4) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    animation: progressShine 1.5s infinite;
}

.progress-text {
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
}

body.dark-mode .progress-container {
    background-color: rgba(255, 255, 255, 0.08);
}

body.dark-mode .progress-text {
    color: var(--accent-color);
}

.upload-success {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.success-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: linear-gradient(135deg, var(--success-color), #0ea5e9);
    color: white;
    border-radius: 50%;
    font-size: 14px;
    box-shadow: 0 2px 6px rgba(16, 185, 129, 0.3);
}

/* 结果区域 - 现代化设计 */
.result-container {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition);
    animation: fadeIn 0.5s ease-out;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(var(--primary-light-rgb), 0.1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

body.dark-mode .result-container {
    background-color: var(--dark-card-bg);
    border-color: rgba(255, 255, 255, 0.05);
}

.result-container h3 {
    color: var(--success-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.6rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
}

.result-container h3::before {
    content: '✓';
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--success-color), #0ea5e9);
    color: white;
    border-radius: 50%;
    font-size: 16px;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
}

.image-preview {
    margin: var(--spacing-lg) auto;
    max-width: 500px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition);
    position: relative;
    border: 3px solid var(--card-bg);
    cursor: pointer;
}

body.dark-mode .image-preview {
    border-color: var(--dark-card-bg);
}

.image-preview::after {
    content: '点击查看大图';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    color: white;
    padding: var(--spacing) 0;
    font-size: 14px;
    opacity: 0;
    transform: translateY(100%);
    transition: all var(--transition);
    pointer-events: none;
}

.image-preview:hover::after {
    opacity: 1;
    transform: translateY(0);
}

.image-preview:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(var(--primary-light-rgb), 0.3);
}

.image-preview img {
    width: 100%;
    height: auto;
    display: block;
    transition: all var(--transition);
}

/* 批量上传图片列表样式 */
.image-list-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 10px;
    margin: var(--spacing-md) 0;
}

.image-item {
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: all var(--transition-fast);
    position: relative;
}

.image-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.image-item.active {
    border: 2px solid var(--primary-color);
}

.image-item img {
    width: 100%;
    height: 100px;
    object-fit: cover;
    display: block;
}

/* 图片列表响应式调整 */
@media (max-width: 576px) {
    .image-list-container {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: 8px;
    }

    .image-item img {
        height: 80px;
    }
}

.link-group {
    margin: var(--spacing-lg) 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
}

.link-item {
    margin-bottom: var(--spacing);
    text-align: left;
    background-color: rgba(var(--primary-light-rgb), 0.03);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    transition: all var(--transition);
    border: 1px solid rgba(var(--primary-light-rgb), 0.08);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    position: relative;
    overflow: hidden;
}

body.dark-mode .link-item {
    background-color: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.05);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.link-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: var(--primary-gradient);
    opacity: 0.7;
    border-radius: 2px;
}

.link-item:hover {
    background-color: rgba(var(--primary-light-rgb), 0.05);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

body.dark-mode .link-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
}

.link-item label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.link-item label::before {
    content: '';
    display: inline-block;
    width: 18px;
    height: 18px;
    background-color: var(--primary-light);
    mask-size: contain;
    mask-repeat: no-repeat;
    mask-position: center;
    opacity: 0.8;
}

.link-item:nth-child(1) label::before {
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71'%3E%3C/path%3E%3Cpath d='M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71'%3E%3C/path%3E%3C/svg%3E");
}

.link-item:nth-child(2) label::before {
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='16 18 22 12 16 6'%3E%3C/polyline%3E%3Cpolyline points='8 6 2 12 8 18'%3E%3C/polyline%3E%3C/svg%3E");
}

.link-item:nth-child(3) label::before {
    mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 11a9 9 0 0 1 9 9'%3E%3C/path%3E%3Cpath d='M4 4a16 16 0 0 1 16 16'%3E%3C/path%3E%3Ccircle cx='5' cy='19' r='1'%3E%3C/circle%3E%3C/svg%3E");
}

body.dark-mode .link-item label {
    color: var(--dark-text);
}

.copy-container {
    display: flex;
    width: 100%;
    position: relative;
}

/* 通用输入框基础样式 */
.input {
    display: block;
    width: 100%;
    padding: var(--spacing) var(--spacing-md);
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-inner);
    -webkit-appearance: none;
    appearance: none;
}

body.dark-mode .input {
    color: var(--dark-text);
    background-color: var(--dark-card-bg);
    border-color: var(--dark-border);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(var(--primary-light-rgb), 0.15);
}

.input::placeholder {
    color: var(--text-lighter);
    opacity: 0.7;
}

body.dark-mode .input::placeholder {
    color: var(--dark-text-lighter);
}

/* 输入框尺寸变体 */
.input-xs {
    padding: var(--spacing-2xs) var(--spacing-xs);
    font-size: 0.75rem;
    border-radius: var(--radius-xs);
}

.input-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.input-lg {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

.input-xl {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.15rem;
    border-radius: var(--radius-lg);
}

/* 输入框状态变体 */
.input-success {
    border-color: var(--success-color);
}

.input-success:focus {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.15);
}

.input-error {
    border-color: var(--error-color);
}

.input-error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.input-warning {
    border-color: var(--warning-color);
}

.input-warning:focus {
    box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.15);
}

/* 禁用状态 */
.input:disabled, .input.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: var(--divider-color);
}

body.dark-mode .input:disabled,
body.dark-mode .input.disabled {
    background-color: var(--dark-divider);
}

/* 特定输入框样式 */
.copy-container input {
    flex: 1;
    font-size: 14px;
}

/* 通用按钮基础样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing) var(--spacing-md);
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.5;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    text-align: center;
    white-space: nowrap;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* 按钮尺寸变体 */
.btn-xs {
    padding: var(--spacing-2xs) var(--spacing-xs);
    font-size: 0.75rem;
    border-radius: var(--radius-xs);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

.btn-xl {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.15rem;
    border-radius: var(--radius-lg);
}

/* 按钮主题变体 */
.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 10px rgba(var(--primary-dark-rgb), 0.2);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-light), var(--secondary-dark));
    color: white;
    box-shadow: 0 4px 10px rgba(219, 39, 119, 0.2);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent-light), var(--accent-dark));
    color: white;
    box-shadow: 0 4px 10px rgba(124, 58, 237, 0.2);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-light), var(--success-color));
    color: white;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.2);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-light), var(--warning-color));
    color: white;
    box-shadow: 0 4px 10px rgba(245, 158, 11, 0.2);
}

.btn-error {
    background: linear-gradient(135deg, var(--error-light), var(--error-color));
    color: white;
    box-shadow: 0 4px 10px rgba(239, 68, 68, 0.2);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: none;
}

.btn-ghost {
    background: transparent;
    color: var(--primary-color);
    box-shadow: none;
}

.btn-glass {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    color: var(--text-color);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

body.dark-mode .btn-glass {
    background: rgba(0, 0, 0, 0.2);
    color: var(--dark-text);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* 按钮悬停和活动状态 */
.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s;
}

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

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

.btn:active {
    transform: translateY(1px);
}

.btn-primary:hover {
    box-shadow: 0 6px 15px rgba(var(--primary-dark-rgb), 0.3);
}

.btn-primary:active {
    box-shadow: 0 2px 5px rgba(var(--primary-dark-rgb), 0.2);
}

.btn-outline:hover {
    background: rgba(var(--primary-light-rgb), 0.1);
}

.btn-ghost:hover {
    background: rgba(var(--primary-light-rgb), 0.05);
}

/* 按钮加载状态 */
.btn.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn.loading::after {
    content: "";
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: btn-loading 0.8s linear infinite;
    margin-left: 8px;
}

@keyframes btn-loading {
    to { transform: rotate(360deg); }
}

/* 按钮禁用状态 */
.btn:disabled, .btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* 特定按钮样式 */
.copy-btn {
    min-width: 80px;
}

/* 桌面端样式 */
@media (min-width: 769px) {
    .copy-container {
        flex-direction: row;
    }

    .copy-container input {
        border-radius: var(--radius) 0 0 var(--radius);
    }

    .copy-btn {
        border-radius: 0 var(--radius) var(--radius) 0;
    }
}

.upload-again-btn {
    margin-top: var(--spacing-lg);
    gap: var(--spacing-sm);
}

.upload-again-btn::after {
    content: '↑';
    font-size: 1.2rem;
    font-weight: bold;
    margin-left: var(--spacing-xs);
    transition: all var(--transition);
}

.upload-again-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(var(--primary-dark-rgb), 0.3);
}

.upload-again-btn:hover::before {
    left: 100%;
}

.upload-again-btn:hover::after {
    transform: translateY(-3px);
}

.upload-again-btn:active {
    transform: translateY(1px);
    box-shadow: 0 4px 8px rgba(var(--primary-dark-rgb), 0.2);
}

/* 特性部分 */
.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
    margin-top: var(--spacing-xl);
    padding: 0 var(--spacing-lg);
}

/* 通用卡片基础样式 */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    position: relative;
    transition: all var(--transition);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

body.dark-mode .card {
    background: var(--dark-card-bg);
    border-color: var(--dark-border);
    box-shadow: var(--shadow);
}

/* 卡片变体 */
.card-hover:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.card-glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

body.dark-mode .card-glass {
    background: rgba(31, 41, 55, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.card-bordered {
    border-width: 2px;
}

.card-accent {
    border-top: 4px solid var(--primary-color);
}

.card-accent-left {
    border-left: 4px solid var(--primary-color);
}

.card-accent-bottom {
    border-bottom: 4px solid var(--primary-color);
}

.card-accent-right {
    border-right: 4px solid var(--primary-color);
}

/* 特性卡片 - 现代玻璃效果设计 */
.feature-card {
    width: 220px;
    height: 280px;
    position: relative;
    border-radius: var(--radius-lg);
    margin: 0 auto;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    overflow: hidden;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    transform-style: preserve-3d;
    perspective: 1000px;
}

body.dark-mode .feature-card {
    background: rgba(20, 20, 35, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.feature-card-inner {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    position: relative;
    z-index: 1;
    transform-style: preserve-3d;
    transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(var(--primary-light-rgb), 0.3) 0%,
        rgba(var(--primary-dark-rgb), 0.1) 100%
    );
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 0;
}

.feature-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at 50% 0%,
        rgba(255, 255, 255, 0.3) 0%,
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 0;
}

.feature-card h3 {
    color: var(--text-color);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing);
    position: relative;
    text-align: center;
    transform: translateZ(30px);
    transition: all 0.5s ease;
}

body.dark-mode .feature-card h3 {
    color: var(--dark-text);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 1rem;
    padding: 0 var(--spacing-xs);
    text-align: center;
    transform: translateZ(20px);
    transition: all 0.5s ease;
}

body.dark-mode .feature-card p {
    color: var(--dark-text-light);
}

.feature-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 30px rgba(var(--primary-dark-rgb), 0.2);
}

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

.feature-icon {
    margin-bottom: var(--spacing-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: rgba(var(--primary-light-rgb), 0.15);
    box-shadow: 0 5px 15px rgba(var(--primary-dark-rgb), 0.2);
    transform: translateZ(40px);
}

.feature-icon::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: -1;
}

.feature-icon svg {
    color: var(--primary-color);
    transition: all 0.5s ease;
    width: 35px;
    height: 35px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

body.dark-mode .feature-icon {
    background: rgba(var(--primary-light-rgb), 0.2);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

body.dark-mode .feature-icon svg {
    color: var(--primary-light);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.feature-card:hover .feature-icon {
    transform: translateZ(50px) scale(1.1) rotate(10deg);
    box-shadow: 0 8px 20px rgba(var(--primary-dark-rgb), 0.3);
}

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

.feature-card:hover .feature-icon svg {
    transform: scale(1.1);
    color: white;
    filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.2));
}

.feature-card:hover h3 {
    transform: translateZ(40px);
    color: var(--primary-color);
}

body.dark-mode .feature-card:hover h3 {
    color: var(--primary-light);
}

.feature-card:hover p {
    transform: translateZ(30px);
}

/* 页脚 */
.footer {
    padding: var(--spacing-lg) 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
    color: var(--text-light);
    position: relative;
}

body.dark-mode .footer {
    border-top-color: var(--dark-border);
    color: var(--dark-text-light);
}

.footer a {
    font-weight: 500;
    position: relative;
}

.footer a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--primary-light);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.footer a:hover::after {
    transform: scaleX(1);
}

/* 3D卡片效果 */
.feature-card-3d {
    width: 220px;
    height: 280px;
    position: relative;
    border-radius: var(--radius-lg);
    margin: 0 auto;
    transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    overflow: hidden;
    background: var(--card-bg);
    border: 1px solid rgba(var(--primary-light-rgb), 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform-style: preserve-3d;
    perspective: 1000px;
}

body.dark-mode .feature-card-3d {
    background: var(--dark-card-bg);
    border: 1px solid rgba(var(--primary-light-rgb), 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.feature-card-3d-inner {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    position: relative;
    z-index: 1;
    transform-style: preserve-3d;
    transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

.feature-card-3d::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(var(--primary-light-rgb), 0.1) 0%,
        rgba(var(--accent-light), 0.1) 100%
    );
    opacity: 0;
    transition: opacity 0.5s ease;
    z-index: 0;
}

.feature-card-3d h3 {
    color: var(--text-color);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--spacing);
    position: relative;
    text-align: center;
    transform: translateZ(30px);
    transition: all 0.5s ease;
}

body.dark-mode .feature-card-3d h3 {
    color: var(--dark-text);
}

.feature-card-3d p {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 1rem;
    padding: 0 var(--spacing-xs);
    text-align: center;
    transform: translateZ(20px);
    transition: all 0.5s ease;
}

body.dark-mode .feature-card-3d p {
    color: var(--dark-text-light);
}

.feature-card-3d .feature-icon {
    background: var(--primary-gradient);
    color: white;
}

.feature-card-3d .feature-icon svg {
    color: white;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.feature-card-3d:hover {
    transform: translateY(-10px) rotateX(10deg) rotateY(-10deg);
    box-shadow: 20px 20px 30px rgba(0, 0, 0, 0.1);
}

body.dark-mode .feature-card-3d:hover {
    box-shadow: 20px 20px 30px rgba(0, 0, 0, 0.2);
}

.feature-card-3d:hover::before {
    opacity: 1;
}

.feature-card-3d:hover .feature-icon {
    transform: translateZ(60px) scale(1.1);
    box-shadow: 0 8px 20px rgba(var(--primary-dark-rgb), 0.3);
}

.feature-card-3d:hover h3 {
    transform: translateZ(50px);
    color: var(--primary-color);
}

body.dark-mode .feature-card-3d:hover h3 {
    color: var(--primary-light);
}

.feature-card-3d:hover p {
    transform: translateZ(40px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .features {
        gap: 2rem;
    }

    .feature-card,
    .feature-card-3d {
        width: 200px;
        height: 260px;
    }

    .feature-icon {
        margin-bottom: var(--spacing);
        width: 60px;
        height: 60px;
    }

    .feature-card h3,
    .feature-card-3d h3 {
        font-size: 1.2rem;
    }

    .feature-card p,
    .feature-card-3d p {
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .features {
        gap: 1.5rem;
    }
}

@media (max-width: 576px) {
    .features {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .feature-card,
    .feature-card-3d {
        width: 220px;
        height: 280px;
    }
}

@media (max-width: 850px) {
    .features {
        grid-template-columns: repeat(3, 1fr);
        max-width: 90%;
    }

    .feature-card,
    .feature-card-3d {
        padding: var(--spacing-sm);
    }

    .feature-icon {
        width: 60px;
        height: 60px;
        margin-bottom: var(--spacing-sm);
    }

    .feature-icon svg {
        width: 30px;
        height: 30px;
    }

    .feature-card h3,
    .feature-card-3d h3 {
        font-size: 1rem;
    }

    .app-container {
        padding: 0 var(--spacing-lg);
    }

    .hero {
        padding: var(--spacing-lg) 0;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: row;
        justify-content: space-between;
        padding: var(--spacing) var(--spacing-sm);
        position: sticky;
        top: 0;
        z-index: 100;
        box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    }

    body.dark-mode .header {
        box-shadow: 0 2px 15px rgba(0, 0, 0, 0.2);
    }

    .logo h1 {
        font-size: 22px;
    }

    .logo-img {
        height: 36px;
    }

    .nav-container {
        display: flex;
        align-items: center;
    }

    /* 隐藏桌面导航，显示移动菜单按钮 */
    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: flex !important;
    }



    /* 上传区域移动端优化 */
    .upload-container {
        padding: var(--spacing);
        margin-bottom: var(--spacing);
    }

    .upload-area {
        padding: var(--spacing-md);
        min-height: 200px;
    }

    .upload-icon {
        width: 60px;
        height: 60px;
    }

    .upload-icon svg {
        width: 28px;
        height: 28px;
    }

    .upload-text {
        font-size: 16px;
        margin-top: var(--spacing);
    }

    .upload-hint {
        font-size: 13px;
        max-width: 95%;
    }

    /* 结果区域移动端优化 */
    .result-container {
        padding: var(--spacing);
    }

    .result-container h3 {
        font-size: 1.2rem;
    }

    .result-container h3::before {
        width: 24px;
        height: 24px;
        font-size: 14px;
    }

    .image-preview {
        margin: var(--spacing) auto;
    }

    .image-preview::after {
        content: '点击放大';
        font-size: 12px;
    }

    .link-group {
        max-width: 100%;
        gap: var(--spacing);
    }

    .link-item {
        padding: var(--spacing-sm);
    }

    .link-item label {
        font-size: 0.85rem;
    }

    .copy-container {
        flex-direction: column;
        align-items: stretch;
    }

    .copy-container input {
        width: 100%;
        margin-bottom: var(--spacing-xs);
        padding: var(--spacing-sm);
        font-size: 13px;
        border-radius: var(--radius) !important;
    }

    .copy-btn {
        width: 100%;
        padding: var(--spacing-sm);
        font-size: 13px;
        margin-left: 0;
        border-radius: var(--radius) !important;
    }

    .upload-again-btn {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing);
        font-size: 14px;
    }

    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
    }
}

@media (max-width: 700px) {
    .features {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .feature-card {
        padding: var(--spacing-md);
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .feature-icon {
        width: 70px;
        height: 70px;
    }

    .feature-icon svg {
        width: 35px;
        height: 35px;
    }

    .feature-card h3 {
        font-size: 1.2rem;
    }
}

/* 移动端特定优化 */
@media (max-width: 576px) {
    .app-container {
        padding: var(--spacing-sm) var(--spacing);
    }



    .upload-container {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    .upload-area {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .upload-icon {
        margin-bottom: var(--spacing);
    }

    .upload-icon svg {
        width: 36px;
        height: 36px;
    }

    .upload-text {
        font-size: 0.95rem;
    }

    /* 进度条移动端样式 */
    .upload-progress {
        width: 100%;
    }

    .progress-container {
        height: 6px;
    }

    .progress-text {
        font-size: 12px;
    }

    .upload-success {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .success-icon {
        width: 20px;
        height: 20px;
        font-size: 12px;
    }

    .feature-card {
        padding: var(--spacing-lg) var(--spacing);
    }

    .feature-card:hover {
        transform: translateY(-5px);
    }

    .feature-card:hover {
        transform: translateY(-5px) !important;
    }

    .footer {
        margin-top: var(--spacing-lg);
        padding: var(--spacing) 0;
        font-size: 0.9rem;
    }

    .fullscreen-preview-content {
        max-width: 95%;
    }

    .close-preview {
        top: -30px;
        right: -10px;
        width: 30px;
        height: 30px;
    }

    /* 改进触摸交互 */
    .copy-btn,
    .upload-again-btn,
    .theme-toggle,
    .nav-link,
    .mobile-menu-btn,
    .mobile-menu-close,
    .mobile-nav-link {
        min-height: 44px; /* 确保触摸目标足够大 */
    }

    /* 增强移动端菜单按钮的可见性 */
    .mobile-menu-btn {
        display: flex !important;
        background-color: rgba(0, 0, 0, 0.1);
        width: 46px;
        height: 46px;
        margin-left: 8px;
        border-radius: 8px;
    }

    body.dark-mode .mobile-menu-btn {
        background-color: rgba(255, 255, 255, 0.15);
    }

    .mobile-menu-btn svg {
        width: 28px;
        height: 28px;
        stroke-width: 2.5px;
    }

    .upload-again-btn {
        width: 100%;
        margin-top: var(--spacing);
    }

    /* 优化表单元素 */
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="search"],
    textarea,
    select {
        font-size: 16px; /* 防止iOS自动缩放 */
        padding: 12px; /* 增加触摸区域 */
    }

    /* 优化图片预览 */
    .fullscreen-preview img {
        transition: transform 0.3s ease;
        touch-action: manipulation; /* 改善触摸体验 */
    }

    /* 添加移动端滑动提示 */
    .fullscreen-preview::after {
        content: '双指缩放 · 双击放大';
        position: absolute;
        bottom: 20px;
        left: 0;
        width: 100%;
        text-align: center;
        color: rgba(255, 255, 255, 0.7);
        font-size: 12px;
        padding: 8px;
        background-color: rgba(0, 0, 0, 0.3);
        border-radius: 20px;
        pointer-events: none;
        opacity: 1;
        animation: fadeOut 3s forwards 2s;
    }

    /* 优化登录/注册表单 */
    .auth-container {
        width: 100%;
        max-width: 100%;
        padding: var(--spacing);
        margin: var(--spacing) 0;
    }

    .auth-form .form-group {
        margin-bottom: var(--spacing);
    }

    .auth-form label {
        margin-bottom: 8px;
        display: block;
    }

    .auth-form input {
        width: 100%;
        padding: 12px;
        border-radius: var(--radius-sm);
    }

    .auth-btn {
        width: 100%;
        padding: 14px;
        font-size: 16px;
    }

    /* 优化移动端菜单 */
    .mobile-menu {
        width: 85%;
        visibility: visible !important;
    }

    .mobile-nav-link {
        padding: 14px var(--spacing);
        font-size: 16px;
        font-weight: 500;
    }

    /* 增强移动端菜单的可见性 */
    .mobile-menu.active {
        right: 0 !important;
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.25);
    }

    body.dark-mode .mobile-menu.active {
        box-shadow: -5px 0 25px rgba(0, 0, 0, 0.5);
    }

    .mobile-menu-overlay.active {
        opacity: 0.7 !important;
    }

    @keyframes fadeOut {
        to { opacity: 0; }
    }
}

/* 超小屏幕设备优化 */
@media (max-width: 360px) {


    .logo h1 {
        font-size: 18px;
    }

    .logo-img {
        height: 30px;
    }

    .upload-icon {
        width: 50px;
        height: 50px;
    }

    .upload-icon svg {
        width: 24px;
        height: 24px;
    }

    .upload-text {
        font-size: 0.85rem;
    }

    .upload-hint {
        font-size: 0.75rem;
    }

    .link-item {
        padding: var(--spacing-xs);
    }

    .link-item label {
        font-size: 0.75rem;
    }

    .link-item label::before {
        width: 14px;
        height: 14px;
    }

    .copy-container input,
    .copy-btn {
        font-size: 11px;
        padding: 8px;
    }

    .result-container h3 {
        font-size: 1.1rem;
    }

    .result-container h3::before {
        width: 20px;
        height: 20px;
        font-size: 12px;
    }

    .upload-again-btn {
        font-size: 13px;
        padding: 8px 12px;
    }

    .mobile-menu-btn {
        width: 38px;
        height: 38px;
    }

    .mobile-menu-btn svg {
        width: 22px;
        height: 22px;
    }
}

/* 加载中动画 */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading::after {
    content: "";
    display: block;
    width: 30px;
    height: 30px;
    margin: var(--spacing) auto;
    border-radius: 50%;
    border: 3px solid var(--primary-color);
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

/* 暗色模式切换动画 */
.dark-mode-transition {
    transition: background-color 0.5s ease, color 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease;
}

/* 页面退出动画 */
.page-exit {
    animation: fadeOut 0.5s forwards;
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0.5; }
}

/* 图片预览悬停效果 */
.image-preview::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 70%, rgba(0, 0, 0, 0.1));
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.image-preview:hover::after {
    opacity: 1;
}

/* 全屏预览 - 现代化设计 */
.fullscreen-preview {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    cursor: zoom-out;
    animation: fadeIn 0.3s ease-out;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.fullscreen-preview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center,
        rgba(var(--primary-light-rgb), 0.1) 0%,
        transparent 70%);
    pointer-events: none;
    opacity: 0.5;
}

.fullscreen-preview-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    animation: scaleIn 0.3s ease-out;
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.fullscreen-preview img {
    max-width: 100%;
    max-height: 90vh;
    border-radius: var(--radius);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    cursor: default;
    border: 2px solid rgba(255, 255, 255, 0.1);
    object-fit: contain;
}

.close-preview {
    position: absolute;
    top: -50px;
    right: -20px;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    color: white;
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.close-preview:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.1) rotate(90deg);
}

/* 震动动画 */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

/* 加载文本动画 */
.loading-text::after {
    content: "...";
    display: inline-block;
    width: 1em;
    text-align: left;
    animation: ellipsis 1.5s infinite;
}

@keyframes ellipsis {
    0% { content: "."; }
    33% { content: ".."; }
    66% { content: "..."; }
}

/* 复制按钮状态 */
.copy-btn.success {
    background: var(--success-color);
}

.copy-btn.error {
    background: var(--secondary-color);
}

/* 导航容器 */
.nav-container {
    display: flex;
    align-items: center;
}

/* 头部按钮容器 */
.header-buttons {
    display: flex;
    align-items: center;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: var(--text-light);
    transition: all var(--transition-fast);
    margin-left: var(--spacing-sm);
    padding: 0;
    align-items: center;
    justify-content: center;
    z-index: 1002; /* 确保按钮在最上层，比菜单更高 */
    position: relative; /* 确保z-index生效 */
}

.mobile-menu-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--primary-color);
}

body.dark-mode .mobile-menu-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* 增强移动端菜单按钮在移动设备上的可见性 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        background-color: rgba(0, 0, 0, 0.05);
        width: 44px;
        height: 44px;
    }

    body.dark-mode .mobile-menu-btn {
        background-color: rgba(255, 255, 255, 0.1);
    }

    .mobile-menu-btn svg {
        width: 28px;
        height: 28px;
    }
}

/* 移动端菜单 */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--card-bg);
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    z-index: 1001; /* 确保菜单在最上层 */
    transition: right var(--transition);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding-bottom: 50px; /* 确保底部有足够空间 */
    visibility: visible; /* 确保菜单可见 */
}

body.dark-mode .mobile-menu {
    background-color: var(--dark-card-bg);
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.3);
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: var(--card-bg);
    z-index: 1002;
}

body.dark-mode .mobile-menu-header {
    border-bottom-color: var(--dark-border);
    background-color: var(--dark-card-bg);
}

.mobile-menu-close {
    background: none;
    border: none;
    cursor: pointer;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    color: var(--text-light);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1003; /* 确保关闭按钮在最上层 */
    position: relative; /* 确保z-index生效 */
    background-color: rgba(0, 0, 0, 0.05); /* 增加背景色提高可见性 */
}

.mobile-menu-close:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--secondary-color);
}

body.dark-mode .mobile-menu-close {
    background-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .mobile-menu-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    padding: var(--spacing);
}

.mobile-nav-link {
    padding: var(--spacing);
    color: var(--text-color);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-sm);
    text-decoration: none;
    display: flex;
    align-items: center;
    font-size: 16px;
    min-height: 50px; /* 增加触摸区域 */
}

body.dark-mode .mobile-nav-link {
    color: var(--dark-text);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background-color: rgba(var(--primary-light-rgb), 0.1);
    color: var(--primary-color);
}

/* 移动端菜单遮罩 */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 99; /* 降低z-index，确保它不会覆盖菜单按钮 */
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
    pointer-events: none; /* 默认不接收点击事件 */
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto; /* 激活时接收点击事件 */
}

/* 页面加载动画 - 现代化设计 4.0 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.8s cubic-bezier(0.65, 0, 0.35, 1), visibility 0.8s cubic-bezier(0.65, 0, 0.35, 1);
    pointer-events: none;
    text-align: center;
}

.page-loader::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center,
        rgba(var(--primary-light-rgb), 0.05) 0%,
        transparent 70%);
    z-index: -1;
    opacity: 0.8;
    animation: pulse-subtle 3s infinite alternate;
}

@keyframes pulse-subtle {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
}

body.dark-mode .page-loader {
    background-color: var(--dark-bg);
}

body.dark-mode .page-loader::before {
    background: radial-gradient(circle at center,
        rgba(var(--primary-light-rgb), 0.08) 0%,
        transparent 70%);
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    width: 100%;
    margin: 0 auto;
    position: relative;
}

.loader-brand {
    position: absolute;
    bottom: -80px;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-color);
    letter-spacing: 1px;
    opacity: 0.8;
    animation: fade-in-up 1s ease forwards;
}

body.dark-mode .loader-brand {
    color: var(--primary-light);
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 0.8;
        transform: translateY(0);
    }
}

/* 现代加载动画 */
.loader {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 120px;
    height: 120px;
}

.loader-circle {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 4px solid transparent;
    border-top-color: var(--primary-color);
    animation: loader-rotate 1.5s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

.loader-circle:nth-child(1) {
    border-top-color: var(--primary-light);
}

.loader-circle:nth-child(2) {
    width: 80%;
    height: 80%;
    border-top-color: var(--accent-color);
    animation-duration: 1.75s;
    animation-direction: reverse;
}

.loader-circle:nth-child(3) {
    width: 60%;
    height: 60%;
    border-top-color: var(--secondary-color);
    animation-duration: 2s;
}

.loader-dot {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--primary-gradient);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: loader-pulse 1s ease-in-out infinite alternate;
    box-shadow: 0 0 15px rgba(var(--primary-light-rgb), 0.5);
}

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

@keyframes loader-pulse {
    0% {
        transform: translate(-50%, -50%) scale(0.8);
        box-shadow: 0 0 0 rgba(var(--primary-light-rgb), 0.7);
    }
    100% {
        transform: translate(-50%, -50%) scale(1.2);
        box-shadow: 0 0 20px rgba(var(--primary-light-rgb), 0.5);
    }
}

/* 页面过渡动画 - 现代化设计 4.0 */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s cubic-bezier(0.65, 0, 0.35, 1), visibility 0.5s cubic-bezier(0.65, 0, 0.35, 1);
    pointer-events: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-transition::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center,
        rgba(var(--primary-light-rgb), 0.08) 0%,
        transparent 70%);
    opacity: 0;
    transition: opacity 0.5s cubic-bezier(0.65, 0, 0.35, 1);
}

.page-transition::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--primary-color);
    animation: loader-rotate 0.8s linear infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.page-transition.active {
    opacity: 1;
    visibility: visible;
}

.page-transition.active::before {
    opacity: 1;
}

.page-transition.active::after {
    opacity: 1;
}

body.dark-mode .page-transition {
    background-color: var(--dark-bg);
}

body.dark-mode .page-transition::after {
    border-top-color: var(--primary-light);
}

/* 淡入动画 - 现代化设计 4.0 */
.fade-in-element {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

.fade-in-element.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 滚动动画 - 现代化设计 4.0 */
.scroll-animation {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
    backface-visibility: hidden;
    perspective: 1000px;
}

.scroll-animation.from-left {
    transform: translateX(-50px);
}

.scroll-animation.from-right {
    transform: translateX(50px);
}

.scroll-animation.from-bottom {
    transform: translateY(50px);
}

.scroll-animation.fade-in {
    opacity: 0;
    transform: translateY(0);
}

.scroll-animation.scale-in {
    opacity: 0;
    transform: scale(0.9);
}

.scroll-animation.rotate-in {
    opacity: 0;
    transform: rotate(-5deg) scale(0.95);
}

.scroll-animation.blur-in {
    opacity: 0;
    transform: translateY(0);
    filter: blur(10px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1),
                filter 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-animation.visible {
    opacity: 1;
    transform: translate(0) rotate(0) scale(1);
    filter: blur(0);
}

/* 交错动画 */
.stagger-animation > * {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-animation.visible > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-animation.visible > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-animation.visible > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-animation.visible > *:nth-child(4) { transition-delay: 0.4s; }
.stagger-animation.visible > *:nth-child(5) { transition-delay: 0.5s; }
.stagger-animation.visible > *:nth-child(6) { transition-delay: 0.6s; }
.stagger-animation.visible > *:nth-child(7) { transition-delay: 0.7s; }
.stagger-animation.visible > *:nth-child(8) { transition-delay: 0.8s; }
.stagger-animation.visible > *:nth-child(9) { transition-delay: 0.9s; }
.stagger-animation.visible > *:nth-child(10) { transition-delay: 1.0s; }

.stagger-animation.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* 页面滚动进度条 - 现代化设计 */
.scroll-progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: transparent;
    z-index: 1000;
    pointer-events: none;
}

.scroll-progress-bar {
    height: 100%;
    width: 0;
    background: var(--primary-gradient);
    transition: width 0.1s;
    box-shadow: 0 0 10px rgba(var(--primary-light-rgb), 0.5);
    position: relative;
    overflow: hidden;
}

.scroll-progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100%;
    background: linear-gradient(90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%);
    animation: progressShine 2s infinite;
    transform: skewX(-20deg);
}

@keyframes progressShine {
    0% {
        right: 100%;
    }
    100% {
        right: -100%;
    }
}

/* 返回顶部按钮 - 现代化设计 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary-gradient);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(var(--primary-dark-rgb), 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.9);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 99;
    border: 2px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.back-to-top::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center,
        rgba(255, 255, 255, 0.2) 0%,
        transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.back-to-top:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 8px 25px rgba(var(--primary-dark-rgb), 0.4);
}

.back-to-top:hover::before {
    opacity: 1;
}

.back-to-top svg {
    width: 24px;
    height: 24px;
    stroke: white;
    filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.2));
    transition: all 0.3s ease;
}

.back-to-top:hover svg {
    transform: translateY(-3px);
}

/* 登录和注册页面样式 */
.auth-container {
    max-width: 450px;
    margin: var(--spacing-xl) auto;
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    transition: all var(--transition);
}

body.dark-mode .auth-container {
    background-color: var(--dark-card-bg);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.auth-header h2 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
    font-weight: 700;
}

.auth-header p {
    color: var(--text-light);
    font-size: 1rem;
}

body.dark-mode .auth-header p {
    color: var(--dark-text-light);
}

.auth-error {
    background-color: rgba(var(--secondary-color), 0.1);
    color: var(--secondary-color);
    padding: var(--spacing);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing);
    font-size: 0.9rem;
    display: none;
}

.auth-error.show {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

.auth-form {
    margin-bottom: var(--spacing);
}

.auth-form .form-group {
    margin-bottom: var(--spacing-md);
}

.auth-form label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-color);
}

body.dark-mode .auth-form label {
    color: var(--dark-text);
}

.auth-form input {
    width: 100%;
    font-size: 1rem;
}

.auth-btn {
    width: 100%;
    padding: var(--spacing);
    font-size: 1rem;
}

.auth-btn:hover::before {
    left: 100%;
}

.auth-btn:active {
    transform: translateY(1px);
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1);
}

.auth-links {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-light);
}

body.dark-mode .auth-links {
    color: var(--dark-text-light);
}

.auth-links a {
    font-weight: 600;
    text-decoration: underline;
}

/* 粘贴效果动画 */
@keyframes pasteEffect {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(var(--primary-light-rgb), 0);
    }
    50% {
        transform: scale(1.03);
        box-shadow: 0 0 0 15px rgba(var(--primary-light-rgb), 0.4);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(var(--primary-light-rgb), 0);
    }
}

.paste-effect {
    animation: pasteEffect 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* 键盘样式 */
kbd {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2);
    color: var(--text-color);
    display: inline-block;
    font-size: 0.85em;
    font-weight: 600;
    line-height: 1;
    padding: 3px 5px;
    margin: 0 2px;
    vertical-align: middle;
}

body.dark-mode kbd {
    background-color: var(--dark-card-bg);
    border-color: var(--dark-border);
    color: var(--dark-text);
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.4);
}

/* 主题切换按钮 */
.theme-toggle {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-left: var(--spacing);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background-color: rgba(var(--primary-light-rgb), 0.1);
}

.theme-toggle input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.theme-toggle-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--text-color);
  transition: all 0.3s ease;
}

body.dark-mode .theme-toggle-icon {
  color: var(--dark-text);
}

.theme-toggle-icon .ri-sun-line,
.theme-toggle-icon .ri-moon-line {
  position: absolute;
  transition: all 0.3s ease;
}

.theme-toggle-icon .ri-sun-line {
  opacity: 1;
  transform: scale(1);
}

.theme-toggle-icon .ri-moon-line {
  opacity: 0;
  transform: scale(0.5);
}

body.dark-mode .theme-toggle-icon .ri-sun-line {
  opacity: 0;
  transform: scale(0.5);
}

body.dark-mode .theme-toggle-icon .ri-moon-line {
  opacity: 1;
  transform: scale(1);
}

/* 翻转卡片登录/注册组件 */
.wrapper {
  --input-focus: #2d8cf0;
  --font-color: var(--dark-text);
  --font-color-sub: var(--text-light);
  --bg-color: var(--card-bg);
  --bg-color-alt: var(--border-color);
  --main-color: var(--primary-color);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 70vh;
  margin: var(--spacing-lg) 0;
}

body.dark-mode .wrapper {
  --font-color: var(--dark-text);
  --font-color-sub: var(--dark-text-light);
  --bg-color: var(--dark-card-bg);
  --bg-color-alt: var(--dark-border);
}

.card-switch {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  max-width: 300px;
  width: 100%;
  margin: 0 auto;
}

/* 开关样式 */
.switch {
  transform: translateY(-200px);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 30px;
  width: 50px;
  height: 20px;
  z-index: 10;
}

.card-side::before {
  position: absolute;
  content: '登录';
  left: -70px;
  top: 0;
  width: 100px;
  text-decoration: underline;
  color: var(--font-color);
  font-weight: 600;
}

.card-side::after {
  position: absolute;
  content: '注册';
  left: 70px;
  top: 0;
  width: 100px;
  text-decoration: none;
  color: var(--font-color);
  font-weight: 600;
}

.toggle {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  box-sizing: border-box;
  border-radius: 5px;
  border: 2px solid var(--main-color);
  box-shadow: 4px 4px var(--main-color);
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-color);
  transition: 0.3s;
}

.slider:before {
  box-sizing: border-box;
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  border: 2px solid var(--main-color);
  border-radius: 5px;
  left: -2px;
  bottom: 2px;
  background-color: var(--bg-color);
  box-shadow: 0 3px 0 var(--main-color);
  transition: 0.3s;
}

.toggle:checked + .slider {
  background-color: var(--input-focus);
}

.toggle:checked + .slider:before {
  transform: translateX(30px);
}

.toggle:checked ~ .card-side:before {
  text-decoration: none;
}

.toggle:checked ~ .card-side:after {
  text-decoration: underline;
}

/* 卡片 */
.flip-card__inner {
  width: 300px;
  height: 350px;
  position: relative;
  background-color: transparent;
  perspective: 1000px;
  text-align: center;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}

.toggle:checked ~ .flip-card__inner {
  transform: rotateY(180deg);
}

.toggle:checked ~ .flip-card__front {
  box-shadow: none;
}

.flip-card__front, .flip-card__back {
  padding: 20px;
  position: absolute;
  display: flex;
  flex-direction: column;
  justify-content: center;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  background: var(--bg-color);
  gap: 20px;
  border-radius: 5px;
  border: 2px solid var(--main-color);
  box-shadow: 4px 4px var(--main-color);
  width: 100%;
}

.flip-card__back {
  width: 100%;
  transform: rotateY(180deg);
}

.flip-card__form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.title {
  margin: 20px 0 20px 0;
  font-size: 25px;
  font-weight: 900;
  text-align: center;
  color: var(--main-color);
}

.flip-card__input {
  width: 250px;
  height: 40px;
  border-radius: 5px;
  border: 2px solid var(--main-color);
  background-color: var(--bg-color);
  box-shadow: 4px 4px var(--main-color);
  font-size: 15px;
  font-weight: 600;
  color: var(--font-color);
  padding: 5px 10px;
  outline: none;
  transition: all var(--transition-fast);
}

.flip-card__input::placeholder {
  color: var(--font-color-sub);
  opacity: 0.8;
}

.flip-card__input:focus {
  border: 2px solid var(--input-focus);
  box-shadow: 4px 4px var(--input-focus);
}

.flip-card__btn {
  margin: 20px 0 20px 0;
  width: 120px;
  height: 40px;
  border-radius: 5px;
  border: 2px solid var(--main-color);
  background-color: var(--bg-color);
  box-shadow: 4px 4px var(--main-color);
  font-size: 17px;
  font-weight: 600;
  color: var(--font-color);
  cursor: pointer;
  transition: all 0.2s ease;
}

.flip-card__btn:hover {
  background-color: var(--main-color);
  color: white;
}

.flip-card__btn:active {
  box-shadow: 0px 0px var(--main-color);
  transform: translate(3px, 3px);
}

body.dark-mode .slider {
  background-color: var(--dark-card-bg);
}

body.dark-mode .slider:before {
  background-color: var(--dark-card-bg);
}

@media (max-width: 576px) {
  .wrapper {
    padding: 0 var(--spacing);
  }

  .switch {
    transform: translateY(-180px);
  }

  .flip-card__inner {
    width: 280px;
  }

  .flip-card__input {
    width: 230px;
  }
}

/* 头像相关样式 */
.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: white;
    cursor: pointer;
    transition: all var(--transition);
    overflow: hidden;
    position: relative;
}

.user-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(var(--primary-color-rgb), 0.3);
}

.user-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.user-avatar i {
    font-size: 18px;
}

/* 头像上传提示 */
.user-avatar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-avatar:hover::after {
    opacity: 1;
}

.user-avatar:hover::before {
    content: '📷';
    position: absolute;
    z-index: 1;
    font-size: 14px;
    pointer-events: none;
}

/* 旋转动画 */
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.rotating {
    animation: rotate 1s linear infinite;
}

/* 成功消息样式 */
.success-message {
    font-family: var(--font-family);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
}

.success-message::before {
    content: '✓';
    font-weight: bold;
}

/* 大尺寸头像样式（用于设置页面） */
.user-avatar-large {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    color: white;
    cursor: pointer;
    transition: all var(--transition);
    overflow: hidden;
    position: relative;
    margin: 0 auto 1rem;
}

.user-avatar-large:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(var(--primary-color-rgb), 0.3);
}

.user-avatar-large .user-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.user-avatar-large i {
    font-size: 36px;
}

.user-avatar-large::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.user-avatar-large:hover::after {
    opacity: 1;
}

.user-avatar-large:hover::before {
    content: '更换头像';
    position: absolute;
    z-index: 1;
    font-size: 12px;
    pointer-events: none;
    color: white;
    text-align: center;
}

/* 暗色模式下的头像样式 */
body.dark-mode .user-avatar {
    background: var(--dark-primary-gradient, var(--primary-gradient));
}

body.dark-mode .user-avatar-large {
    background: var(--dark-primary-gradient, var(--primary-gradient));
}

/* 用户资料卡片样式 */
.user-profile-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    overflow: hidden;
    transition: all var(--transition);
}

body.dark-mode .user-profile-card {
    background: var(--dark-card-bg);
}

.profile-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: white;
}

.profile-card-header h3 {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.2rem;
    font-weight: 600;
}

.profile-toggle-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    color: white;
}

.profile-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.profile-card-content {
    padding: 2rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 2rem;
    align-items: start;
}

.profile-avatar-section {
    text-align: center;
    min-width: 120px;
}

.avatar-actions {
    margin-top: 1rem;
}

.avatar-hint {
    font-size: 0.9rem;
    color: var(--primary-color);
    margin: 0.5rem 0 0.25rem;
    font-weight: 500;
}

.avatar-tips {
    font-size: 0.8rem;
    color: var(--text-light);
    margin: 0;
}

body.dark-mode .avatar-tips {
    color: var(--dark-text-light);
}

.profile-info-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-width: 200px;
}

.profile-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

body.dark-mode .profile-info-item {
    background: rgba(255, 255, 255, 0.05);
}

.profile-info-item:hover {
    background: var(--primary-light);
    color: white;
}

body.dark-mode .profile-info-item:hover {
    background: var(--primary-color);
}

.profile-info-item label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    margin: 0;
}

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

body.dark-mode .profile-info-item span {
    color: var(--dark-text);
}

.profile-info-item:hover span {
    color: white;
}

.profile-stats-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-width: 150px;
}

.profile-stat {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

body.dark-mode .profile-stat {
    background: rgba(255, 255, 255, 0.05);
}

.profile-stat:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.profile-stat .stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
}

.profile-stat .stat-content {
    display: flex;
    flex-direction: column;
}

.profile-stat .stat-number {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1;
}

body.dark-mode .profile-stat .stat-number {
    color: var(--dark-text);
}

.profile-stat .stat-label {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.25rem;
}

body.dark-mode .profile-stat .stat-label {
    color: var(--dark-text-light);
}

/* 响应式布局 */
@media (max-width: 768px) {
    .profile-card-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        text-align: center;
    }
    
    .profile-info-section {
        min-width: unset;
    }
    
    .profile-stats-section {
        min-width: unset;
        flex-direction: row;
        justify-content: center;
    }
    
    .profile-info-item {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

/* 卡片折叠动画 */
.user-profile-card.collapsed .profile-card-content {
    display: none;
}

.profile-toggle-btn.collapsed i {
    transform: rotate(180deg);
}