/* 全局重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
}

/* CSS变量定义 */
:root {
    /* 浅色主题变量 */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --bg-tertiary: #e0e0e0;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --border-color: #e0e0e0;
    --primary-color: #007acc;
    --primary-hover: #005f99;
    --sidebar-width: 280px;
    --header-height: 60px;
    --transition-speed: 0.3s;
}

/* 主容器布局 */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
    position: relative;
}

/* 左侧边栏样式 */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-speed) ease-in-out;
    z-index: 1000;
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

/* 侧边栏头部 */
.sidebar-header {
    padding: 20px 15px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 5px;
}

.logo-img {
    width: 32px;
    height: 32px;
    border-radius: 6px;
}

.app-title {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.app-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 5px;
    text-align: center;
}

/* 侧边栏内容区 */
.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

/* 导航树样式 */
.nav-tree {
    padding: 10px 0;
}

.tree-category {
    margin-bottom: 8px;
    border-radius: 8px;
    overflow: hidden;
}

.category-header {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    cursor: pointer;
    border-radius: 6px;
    transition: all var(--transition-speed);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    user-select: none;
}

.category-header:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
}

.category-icon {
    margin-right: 10px;
    color: var(--primary-color);
    font-size: 16px;
    transition: transform var(--transition-speed);
}

.category-header.expanded .category-icon {
    transform: rotate(90deg);
}

.category-title {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.category-count {
    background: var(--primary-color);
    color: white;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 12px;
    min-width: 20px;
    text-align: center;
}

.category-tools {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed) ease-out;
    background: var(--bg-secondary);
    border-radius: 6px;
    margin-top: 4px;
}

.category-tools.expanded {
    max-height: 500px;
}

.tool-item {
    display: flex;
    align-items: center;
    padding: 10px 15px 10px 35px;
    cursor: pointer;
    transition: all var(--transition-speed);
    border-left: 3px solid transparent;
}

.tool-item:hover {
    background: var(--bg-tertiary);
    border-left-color: var(--primary-color);
}

.tool-item.active {
    background: var(--bg-tertiary);
    border-left-color: var(--primary-color);
    color: var(--primary-color);
}

.tool-icon {
    margin-right: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}

.tool-name {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
}

.tool-description {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 2px;
}

/* 主内容区样式 */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-left: 0;
    transition: margin-left var(--transition-speed) ease-in-out;
}

.main-content.expanded {
    margin-left: calc(var(--sidebar-width) * -1);
}

/* 头部样式 */
.header {
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 100;
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
    color: var(--text-primary);
}

.header-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* 时间显示样式 */
.time-display {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    margin-right: 10px;
}

.current-time {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
}

.current-date {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 内容区域样式 */
.content-area {
    flex: 1;
    overflow: hidden;
    background: var(--bg-secondary);
    position: relative;
    padding: 20px;
}

/* 视图容器样式 */
.view-container {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    transition: opacity 0.3s ease, transform 0.3s ease;
    display: flex;
    flex-direction: column;
}

.view-container.hidden {
    opacity: 0;
    transform: translateX(20px);
    pointer-events: none;
    position: absolute;
    top: 0;
    left: 0;
}

/* 工具页面样式 */
.tool-page {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

.tool-page-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
}

.back-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tool-page-title {
    flex: 1;
    margin: 0;
    font-size: 24px;
    font-weight: 600;
    color: var(--text-primary);
}

.tool-page-content {
    background: var(--bg-primary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 30px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

.container-fluid {
    max-width: 1200px;
    margin: 0 auto;
}

/* 工具网格布局 */
.tools-grid {
    display: grid !important;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)) !important;
    gap: 20px !important;
    width: 100% !important;
    flex: 1 !important;
    padding: 20px 0 !important;
}

/* 工具卡片样式 */
.tool-card {
    background: var(--bg-primary);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    padding: 20px;
    cursor: pointer;
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
}

/* 图标优化样式 */
.tool-card-icon,
.category-icon,
.header-btn i,
.time-display i,
.back-btn i {
    /* 确保图标有固定尺寸，防止加载时跳动 */
    width: 20px;
    height: 20px;
    min-width: 20px;
    min-height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    
    /* 字体回退优化 */
    font-family: 'Layui Icon', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1;
    text-align: center;
}

/* 图标回退样式 */
.header-btn-icon {
    /* emoji图标样式 */
    font-family: 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif !important;
    font-size: 16px !important;
    line-height: 1 !important;
    text-align: center !important;
    background: none !important;
    border: none !important;
}

/* 强制覆盖Layui图标 */
body.no-layui-icons .header-btn i,
body.no-layui-icons .back-btn i,
body.no-layui-icons .time-display i {
    font-family: 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif !important;
    font-size: 16px !important;
    line-height: 1 !important;
}

/* 返回按钮图标样式 */
.back-icon {
    font-family: 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif !important;
    font-size: 16px !important;
    line-height: 1 !important;
    color: inherit;
}

/* 头部图标样式 */
.menu-icon,
.home-icon,
.theme-icon {
    font-family: 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif !important;
    font-size: 16px !important;
    line-height: 1 !important;
    text-align: center !important;
    color: inherit;
    font-style: normal !important;
}

/* 自动模式主题图标特殊样式 */
.theme-icon.auto-theme {
    position: relative;
    animation: auto-theme-pulse 3s ease-in-out infinite;
}

@keyframes auto-theme-pulse {
    0%, 100% {
        transform: scale(1);
        filter: brightness(1);
    }
    50% {
        transform: scale(1.1);
        filter: brightness(1.2);
    }
}

/* 图标加载状态 */
.layui-icon:not(:empty):before {
    display: none;
}

.layui-icon:empty:before {
    /* 使用emoji回退时的样式 */
    content: attr(data-fallback);
    font-family: 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif;
    font-size: 16px;
}

/* 无Layui图标时的回退样式 */
body.no-layui-icons .layui-icon:before {
    content: attr(data-fallback) !important;
    font-family: 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif !important;
    font-size: 16px !important;
}

body.no-layui-icons .tool-card-icon,
body.no-layui-icons .category-icon {
    background: var(--primary-color) !important;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #4CAF50);
    transform: translateX(-100%);
    transition: transform var(--transition-speed);
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 122, 204, 0.15);
    border-color: var(--primary-color);
}

.tool-card:hover::before {
    transform: translateX(0);
}

.tool-card-header {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
}

.tool-card-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), #4CAF50);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    margin-right: 12px;
}

.tool-card-title {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.tool-card-category {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
}

.tool-card-description {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 12px;
}

.tool-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tool-tag {
    background: var(--bg-secondary);
    color: var(--text-tertiary);
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 3px;
    border: 1px solid var(--border-color);
}

/* 加载骨架屏样式 */
.loading-skeleton {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.skeleton-card {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.skeleton-header {
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 12px;
    animation: skeleton-loading 1.5s infinite;
}

.skeleton-line {
    height: 16px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    margin-bottom: 8px;
    animation: skeleton-loading 1.5s infinite;
}

.skeleton-line.short {
    width: 60%;
}

.skeleton-line.shorter {
    width: 40%;
}

@keyframes skeleton-loading {
    0% {
        opacity: 0.7;
    }
    50% {
        opacity: 0.4;
    }
    100% {
        opacity: 0.7;
    }
}

/* 加载占位符样式 */
.loading-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--text-secondary);
    gap: 10px;
}

.loading-placeholder i {
    font-size: 20px;
}



/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        z-index: 1001;
    }
    
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 15px;
    }
    
    .time-display {
        display: none;
    }
    
    .header {
        padding: 0 15px;
    }
    
    .content-area {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .tools-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .tool-card {
        padding: 15px;
    }
    
    .sidebar-header {
        padding: 15px 10px;
    }
    
    .content-area {
        padding: 10px;
    }
    
    .tool-page {
        padding: 0 10px;
    }
    
    .tool-page-content {
        padding: 15px;
    }
    
    .tool-page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* 工具详情样式 */
.tool-detail {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tool-info {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 16px;
    border: 1px solid var(--border-color);
}

.tool-info h4 {
    margin: 0 0 10px 0;
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
}

.tool-info p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
}

.tool-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
    transition: all var(--transition-speed);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.btn-primary {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

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

/* 工具界面样式 */
.tool-interface {
    margin-top: 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    width: 100%;
    box-sizing: border-box;
}

.interface-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.interface-row:last-child {
    margin-bottom: 0;
}

.interface-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0; /* 防止flex子项溢出 */
}

.interface-col label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: block;
}

/* 输入框和文本域样式 */
.layui-input,
.layui-textarea {
    width: 100%;
    box-sizing: border-box;
    resize: vertical;
    font-family: inherit;
}

.layui-textarea {
    min-height: 120px;
    max-height: 400px;
}

.interface-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-start;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 20px;
}

/* 哈希工具样式 */
.hash-options {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.hash-options label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 14px;
    color: var(--text-primary);
    cursor: pointer;
}

.hash-options input[type="checkbox"] {
    margin: 0;
}

.hash-results {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hash-result {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.hash-result strong {
    font-size: 14px;
    color: var(--text-primary);
}

/* 颜色格式样式 */
.color-formats {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* 正则结果样式 */
.regex-results {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 13px;
    max-height: 200px;
    overflow-y: auto;
}

.match-summary {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.match-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 8px 12px;
    margin-bottom: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.match-item code {
    background: var(--primary-color);
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 12px;
}

.match-item small {
    color: var(--text-tertiary);
    font-size: 11px;
}

.no-match {
    color: var(--text-tertiary);
    font-style: italic;
    text-align: center;
    padding: 20px;
}

/* Markdown预览样式 */
.markdown-preview {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    min-height: 200px;
    font-family: inherit;
    line-height: 1.6;
    overflow-y: auto;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3 {
    margin: 16px 0 8px 0;
    color: var(--text-primary);
}

.markdown-preview h1 {
    font-size: 24px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 8px;
}

.markdown-preview h2 {
    font-size: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 4px;
}

.markdown-preview h3 {
    font-size: 16px;
}

.markdown-preview ul {
    margin: 8px 0;
    padding-left: 20px;
}

.markdown-preview li {
    margin: 4px 0;
}

.markdown-preview code {
    background: var(--bg-secondary);
    color: var(--primary-color);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 13px;
}

.markdown-preview pre {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    margin: 12px 0;
    overflow-x: auto;
}

.markdown-preview pre code {
    background: none;
    color: var(--text-primary);
    padding: 0;
}

.markdown-preview strong {
    font-weight: 600;
    color: var(--text-primary);
}

.markdown-preview em {
    font-style: italic;
    color: var(--text-secondary);
}

.markdown-preview a {
    color: var(--primary-color);
    text-decoration: none;
}

.markdown-preview a:hover {
    text-decoration: underline;
}

/* 代码对比样式 */
.diff-results {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0;
    max-height: 300px;
    overflow: auto;
}

.diff-results pre {
    margin: 0;
    padding: 12px;
    background: none;
    border: none;
    border-radius: 0;
    font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.4;
}

.diff-results .diff-line {
    padding: 2px 12px;
    border-left: 3px solid transparent;
}

.diff-results .diff-added {
    background: rgba(76, 175, 80, 0.1);
    border-left-color: #4CAF50;
}

.diff-results .diff-removed {
    background: rgba(244, 67, 54, 0.1);
    border-left-color: #f44336;
}

.diff-results .diff-unchanged {
    background: transparent;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .interface-row {
        flex-direction: column;
        gap: 15px;
    }
    
    .interface-actions {
        justify-content: center;
    }
    
    .hash-options {
        flex-direction: column;
        gap: 8px;
    }
    
    .tool-page-content {
        padding: 20px;
        margin: 0;
    }
    
    .tool-page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .tool-page-title {
        font-size: 20px;
    }
    
    .content-area {
        padding: 15px;
    }
    
    .tool-page {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .tool-page-content {
        padding: 15px;
        margin: 0;
    }
    
    .tool-page-title {
        font-size: 18px;
    }
    
    .back-btn {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .content-area {
        padding: 10px;
    }
}

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

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* 无数据状态 */
.no-data {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.no-data i {
    font-size: 48px;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

.no-data h3 {
    margin: 0 0 8px 0;
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
}

.no-data p {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
}

/* 错误状态样式 */
.error {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid #f44336;
    color: #f44336;
    padding: 12px;
    border-radius: 6px;
    font-size: 14px;
    margin: 12px 0;
}

/* 加载状态 */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--text-secondary);
    font-size: 14px;
}

.loading i {
    margin-right: 8px;
    font-size: 20px;
}

/* 动画效果 */
.highlighted {
    animation: highlight 2s ease-in-out;
}

@keyframes highlight {
    0% {
        background: var(--primary-color);
        color: white;
        transform: scale(1.02);
    }
    50% {
        background: var(--primary-color);
        color: white;
        transform: scale(1.02);
    }
    100% {
        background: transparent;
        color: var(--text-primary);
        transform: scale(1);
    }
}