/**
 * 在线图片工具箱 - 主样式表
 * 支持响应式、暗黑模式
 */

/* ============================================================
   CSS 变量定义
   ============================================================ */
:root {
    /* 亮色主题 */
    --bg-body: #f3f4f6;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --bg-header: #ffffff;
    --bg-input: #f9fafb;
    --bg-hover: #f3f4f6;
    --bg-upload: #f8fafc;
    --border-color: #e5e7eb;
    --border-light: #f0f0f0;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --text-link: #3b82f6;
    --text-link-hover: #2563eb;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: #eff6ff;
    --accent-green: #10b981;
    --accent-orange: #f97316;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --sidebar-width: 220px;
    --header-height: 60px;
    --transition: all 0.3s ease;
}

/* 深色主题 */
[data-theme="dark"] {
    --bg-body: #0f172a;
    --bg-sidebar: #1e293b;
    --bg-card: #1e293b;
    --bg-header: #1e293b;
    --bg-input: #334155;
    --bg-hover: #334155;
    --bg-upload: #1e293b;
    --border-color: #334155;
    --border-light: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-link: #60a5fa;
    --text-link-hover: #93c5fd;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
    --accent-light: rgba(59, 130, 246, 0.15);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
}

/* ============================================================
   基础重置
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-body);
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    outline: none;
}

img {
    max-width: 100%;
    height: auto;
}

ul, ol {
    list-style: none;
}

/* ============================================================
   布局框架
   ============================================================ */
.layout {
    display: flex;
    min-height: 100vh;
}

/* 左侧导航栏 */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar::-webkit-scrollbar {
    width: 4px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

/* 站点Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.site-logo .logo-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    font-weight: bold;
}

.site-logo .logo-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
}

/* 导航菜单 */
.nav-menu {
    flex: 1;
    padding: 8px 0;
}

.nav-menu .nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    border-radius: 0;
    position: relative;
    white-space: nowrap;
}

.nav-menu .nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-menu .nav-item.active {
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 500;
}

.nav-menu .nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent);
}

.nav-menu .nav-item .nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.nav-menu .nav-item .nav-label {
    flex: 1;
}

/* 侧边栏底部 */
.sidebar-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    flex-shrink: 0;
}

.sidebar-footer .theme-toggle,
.sidebar-footer .lang-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius);
    color: var(--text-secondary);
    transition: var(--transition);
    font-size: 16px;
}

.sidebar-footer .theme-toggle:hover,
.sidebar-footer .lang-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: 16px;
    left: 16px;
    z-index: 1001;
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--text-primary);
    box-shadow: var(--shadow);
}

/* 遮罩层 */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

/* ============================================================
   主内容区
   ============================================================ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 顶部栏 */
.top-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-header);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.top-header .search-box {
    flex: 1;
    max-width: 600px;
    position: relative;
}

.top-header .search-box input {
    width: 100%;
    height: 40px;
    padding: 0 16px 0 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.top-header .search-box input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.top-header .search-box input::placeholder {
    color: var(--text-muted);
}

.top-header .search-box .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

.top-header .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.top-header .header-actions .btn-login,
.top-header .header-actions .btn-register {
    padding: 8px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.top-header .header-actions .btn-login {
    color: var(--text-link);
}

.top-header .header-actions .btn-login:hover {
    background: var(--accent-light);
}

.top-header .header-actions .btn-register {
    background: var(--accent);
    color: #fff;
}

.top-header .header-actions .btn-register:hover {
    background: var(--accent-hover);
}

.top-header .user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.top-header .user-info:hover {
    background: var(--bg-hover);
}

.top-header .user-info .avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 14px;
    font-weight: 500;
}

/* ============================================================
   内容容器
   ============================================================ */
.page-container {
    flex: 1;
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* ============================================================
   广告位
   ============================================================ */
.ad-slot {
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 24px;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.ad-slot img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.ad-slot .ad-label {
    position: absolute;
    top: 4px;
    right: 8px;
    font-size: 11px;
    color: var(--text-muted);
    background: var(--bg-body);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

/* ============================================================
   工具卡片网格
   ============================================================ */
.section-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.tool-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.tool-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.tool-card .card-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    flex-shrink: 0;
}

.tool-card .card-info {
    flex: 1;
    min-width: 0;
}

.tool-card .card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tool-card .card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-card .card-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    margin-top: 6px;
    font-weight: 500;
}

.tool-card .card-tag.ai {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-red);
}

.tool-card .card-tag.vip {
    background: rgba(245, 158, 11, 0.1);
    color: var(--accent-orange);
}

/* ============================================================
   工具详情页面（单个工具）
   ============================================================ */
.tool-page-header {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 24px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.tool-page-header .tool-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.tool-page-header .tool-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.tool-page-header .tool-actions .action-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--text-secondary);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    background: var(--bg-input);
}

.tool-page-header .tool-actions .action-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* 标签页 */
.tool-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.tool-tabs .tab-item {
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
    margin-bottom: 4px;
}

.tool-tabs .tab-item:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.tool-tabs .tab-item.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
    font-weight: 500;
}

/* 上传区域 */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 24px;
    text-align: center;
    background: var(--bg-upload);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent);
    background: var(--accent-light);
}

.upload-zone .upload-icon {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.upload-zone .upload-title {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.upload-zone .upload-desc {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.upload-zone .upload-btns {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.upload-zone .upload-btns .btn {
    padding: 8px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.upload-zone .upload-btns .btn-primary {
    background: var(--accent);
    color: #fff;
}

.upload-zone .upload-btns .btn-primary:hover {
    background: var(--accent-hover);
}

.upload-zone .upload-btns .btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.upload-zone .upload-btns .btn-secondary:hover {
    background: var(--bg-hover);
}

/* 输出选项 */
.output-options {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: 16px;
}

.output-options .option-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-right: 8px;
}

.output-options .radio-group {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.output-options .radio-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
}

.output-options .radio-group input[type="radio"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* 批量操作栏 */
.batch-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: 16px;
}

.batch-bar .btn-batch {
    padding: 8px 24px;
    border-radius: var(--radius);
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.batch-bar .btn-batch:hover {
    background: var(--accent-hover);
}

.batch-bar .btn-clear {
    padding: 8px 16px;
    border-radius: var(--radius);
    color: var(--accent-red);
    font-size: 14px;
    transition: var(--transition);
}

.batch-bar .btn-clear:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* 图片预览列表 */
.image-preview-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-top: 16px;
}

.image-preview-list .preview-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
}

.image-preview-list .preview-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.image-preview-list .preview-item .remove-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(0,0,0,0.5);
    color: #fff;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s;
}

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

/* AI 模式切换 */
.ai-mode-switch {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.ai-mode-switch .mode-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.ai-mode-switch .mode-options {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}

.ai-mode-switch .mode-options .mode-btn {
    padding: 8px 20px;
    font-size: 14px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.ai-mode-switch .mode-options .mode-btn.active {
    background: var(--accent);
    color: #fff;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
    padding: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.site-footer a {
    color: var(--text-link);
    transition: var(--transition);
}

.site-footer a:hover {
    color: var(--text-link-hover);
    text-decoration: underline;
}

/* ============================================================
   按钮组件
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 24px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

.btn-danger {
    background: var(--accent-red);
    color: #fff;
}

.btn-danger:hover {
    background: #dc2626;
}

/* ============================================================
   响应式设计
   ============================================================ */
@media (max-width: 1200px) {
    .tool-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .tool-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }
    
    .sidebar {
        transform: translateX(-100%);
        width: 260px;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .sidebar-overlay.active {
        display: block;
    }
    
    .top-header {
        padding: 12px 16px 12px 56px;
    }
    
    .page-container {
        padding: 16px;
    }
    
    .tool-grid {
        gap: 12px;
    }
    
    .tool-card {
        padding: 12px;
    }
    
    .tool-card .card-icon {
        width: 40px;
        height: 40px;
        min-width: 40px;
        font-size: 18px;
    }
    
    .upload-zone {
        padding: 32px 16px;
    }
    
    .upload-zone .upload-icon {
        font-size: 36px;
    }
    
    .output-options {
        padding: 12px;
    }
    
    .batch-bar {
        flex-direction: column;
        gap: 12px;
    }
    
    .tool-page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .tool-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 4px;
    }
    
    .tool-tabs .tab-item {
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .tool-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .top-header .search-box {
        max-width: 100%;
    }
    
    .top-header .header-actions .btn-login,
    .top-header .header-actions .btn-register {
        padding: 6px 12px;
        font-size: 13px;
    }
    
    .section-title {
        font-size: 18px;
    }
    
    .upload-zone .upload-btns {
        flex-direction: column;
        align-items: center;
    }
    
    .upload-zone .upload-btns .btn {
        width: 100%;
        max-width: 200px;
    }
    
    .ai-mode-switch {
        flex-direction: column;
    }
}

/* ============================================================
   动画
   ============================================================ */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease forwards;
}

/* ============================================================
   工具页面特殊样式
   ============================================================ */
.tool-workspace {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 24px;
}

.tool-workspace .workspace-title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* 进度条 */
.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-input);
    border-radius: 4px;
    overflow: hidden;
    margin: 12px 0;
}

.progress-bar .progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* Toast 提示 */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-primary);
    animation: fadeIn 0.3s ease;
    max-width: 300px;
}

.toast.success {
    border-left: 3px solid var(--accent-green);
}

.toast.error {
    border-left: 3px solid var(--accent-red);
}

.toast.info {
    border-left: 3px solid var(--accent);
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    max-width: 480px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

/* 隐藏文件输入 */
input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}