/* 基本重置 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* 变量 */
:root {
    /* 亮色主题变量 */
    --background-light: #f5f5f7;
    --text-primary-light: #333333;
    --text-secondary-light: #666666;
    --border-light: #e1e1e1;
    --card-background-light: #ffffff;
    --sidebar-background-light: #ffffff;
    --header-background-light: rgba(255, 255, 255, 0.8);
    --shadow-light: 0 4px 20px rgba(0, 0, 0, 0.05);
    --code-background-light: #f8f8f8;
    
    /* 暗色主题变量 */
    --background-dark: #1a1a1a;
    --text-primary-dark: #ffffff;
    --text-secondary-dark: #aaaaaa;
    --border-dark: #333333;
    --card-background-dark: #252525;
    --sidebar-background-dark: #252525;
    --header-background-dark: rgba(26, 26, 26, 0.8);
    --shadow-dark: 0 4px 20px rgba(0, 0, 0, 0.15);
    --code-background-dark: #2d2d2d;
    
    /* 公共变量 */
    --accent-color: #0071e3;
    --header-height: 60px;
    --sidebar-width: 250px;
    --transition-speed: 0.3s;
    --border-radius: 12px;
}

/* 主题切换 */
body.light-theme {
    --background: var(--background-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --border: var(--border-light);
    --card-background: var(--card-background-light);
    --sidebar-background: var(--sidebar-background-light);
    --header-background: var(--header-background-light);
    --shadow: var(--shadow-light);
    --code-background: var(--code-background-light);
}

body.dark-theme {
    --background: var(--background-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --border: var(--border-dark);
    --card-background: var(--card-background-dark);
    --sidebar-background: var(--sidebar-background-dark);
    --header-background: var(--header-background-dark);
    --shadow: var(--shadow-dark);
    --code-background: var(--code-background-dark);
}

/* 基本样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

/* 布局 */
header {
    position: sticky;
    top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    height: var(--header-height);
    background-color: var(--header-background);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 600;
}

.controls {
    display: flex;
    gap: 10px;
}

.intro {
    padding: 20px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.intro-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    gap: 20px;
}

.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
    background-color: var(--sidebar-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 20px;
    position: sticky;
    top: calc(var(--header-height) + 20px);
    height: calc(100vh - var(--header-height) - 40px);
    overflow-y: auto;
}

.sidebar-title {
    font-size: 1.2rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-item {
    padding: 12px 15px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color var(--transition-speed);
    font-weight: 500;
}

.sidebar-item:hover {
    background-color: rgba(0, 113, 227, 0.1);
}

.sidebar-item.active {
    background-color: rgba(0, 113, 227, 0.2);
    color: var(--accent-color);
}

.content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.example-title {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.section-title {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--text-secondary);
}

.code-section {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 20px;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.code-container {
    position: relative;
    background-color: var(--code-background);
    border-radius: 8px;
    overflow: hidden;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.code-container pre {
    margin: 0;
    padding: 20px;
    overflow-x: auto;
    overflow-y: hidden;
    max-width: 100%;
    font-family: 'SF Mono', Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
    font-size: 14px;
    white-space: pre;
    word-wrap: normal;
}

.code-container pre code {
    display: inline-block;
    min-width: 100%;
    box-sizing: border-box;
}

.preview-section {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    padding: 20px;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.preview-container {
    border-radius: 8px;
    padding: 20px;
    background-color: white;
    overflow: hidden;
    min-height: 200px;
    max-height: 800px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    position: relative;
}

.preview-container * {
    max-width: 100%;
    box-sizing: border-box;
}

.preview-container img,
.preview-container iframe,
.preview-container video,
.preview-container table,
.preview-container div {
    max-width: 100% !important;
    max-height: 600px !important;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    border-top: 1px solid var(--border);
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 主题切换按钮 */
#theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed);
}

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

body.light-theme #theme-toggle .fa-sun {
    display: none;
}

body.dark-theme #theme-toggle .fa-moon {
    display: none;
}

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

/* 语言切换按钮 */
#language-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-weight: bold;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 15px;
    transition: background-color var(--transition-speed);
}

#language-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

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

/* 复制按钮 */
.copy-button {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-speed);
}

body.dark-theme .copy-button {
    background-color: rgba(50, 50, 50, 0.8);
    color: white;
}

.copy-button:hover {
    background-color: rgba(255, 255, 255, 1);
}

body.dark-theme .copy-button:hover {
    background-color: rgba(70, 70, 70, 1);
}

.copy-success {
    color: #4CAF50;
}

/* 响应式设计 */
@media (max-width: 900px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        position: static;
        height: auto;
        margin-bottom: 20px;
    }
    
    .sidebar-menu {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 10px;
    }
    
    .sidebar-item {
        flex-grow: 1;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .site-title {
        font-size: 1.2rem;
    }
    
    .example-title {
        font-size: 1.5rem;
    }
    
    .code-container pre {
        font-size: 12px;
    }
}