:root {
    --primary-color: #4a6fa5;
    --secondary-color: #6b8cbc;
    --accent-color: #ff7e5f;
    --bg-color: #f5f7fa;
    --text-color: #333;
    --sidebar-width: 280px;
    --header-height: 60px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    display: flex;
    min-height: 100vh;
}

/* 侧边栏样式 */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(135deg, #2c3e50, #4a6fa5);
    color: white;
    padding: 20px;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.sidebar-header h1 {
    font-size: 1.5rem;
    margin-left: 10px;
}

.logo {
    font-size: 24px;
}

.toc {
    margin-top: 20px;
}

.toc h2 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #e0e0e0;
}

.toc ul {
    list-style-type: none;
    padding-left: 10px;
}

.toc li {
    margin-bottom: 8px;
    position: relative;
}

.toc a {
    color: #e0e0e0;
    text-decoration: none;
    display: block;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.toc a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    transform: translateX(5px);
}

.toc .h1 { padding-left: 0; font-weight: bold; }
.toc .h2 { padding-left: 15px; }
.toc .h3 { padding-left: 30px; }
.toc .h4 { padding-left: 45px; }
.toc .h5 { padding-left: 60px; }
.toc .h6 { padding-left: 75px; }

/* 主内容区样式 */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px;
    position: relative;
    z-index: 1;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.header h1 {
    color: var(--primary-color);
    font-size: 2rem;
}

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

.btn {
    padding: 8px 15px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.btn:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
    transform: none;
}

.content {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    line-height: 1.7;
}

/* Markdown内容样式 */
.markdown-body h1, .markdown-body h2, .markdown-body h3 {
    margin-top: 1.5em;
    margin-bottom: 0.5em;
    color: var(--primary-color);
}

.markdown-body h1 {
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

.markdown-body h2 {
    border-bottom: 1px solid #eaecef;
    padding-bottom: 5px;
}

.markdown-body p {
    margin-bottom: 1em;
}

.markdown-body ul, .markdown-body ol {
    margin-bottom: 1em;
    padding-left: 2em;
}

.markdown-body blockquote {
    border-left: 4px solid var(--secondary-color);
    padding-left: 1em;
    margin: 1em 0;
    color: #6a737d;
    background-color: #f8f9fa;
    padding: 10px 15px;
    border-radius: 0 4px 4px 0;
}

.markdown-body code {
    background-color: #f6f8fa;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.markdown-body pre {
    background-color: #f6f8fa;
    padding: 16px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1em 0;
}

.markdown-body pre code {
    background-color: transparent;
    padding: 0;
}

.markdown-body table {
    border-collapse: collapse;
    width: 100%;
    margin: 1em 0;
}

.markdown-body th, .markdown-body td {
    border: 1px solid #dfe2e5;
    padding: 6px 13px;
}

.markdown-body th {
    background-color: #f6f8fa;
    font-weight: 600;
}

.markdown-body tr:nth-child(even) {
    background-color: #f6f8fa;
}

.markdown-body a {
    color: var(--secondary-color);
    text-decoration: none;
}

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

/* 加载状态 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 动态背景 */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.bubble {
    position: absolute;
    border-radius: 50%;
    background: rgba(74, 111, 165, 0.1);
    animation: float 15s infinite ease-in-out;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    25% {
        transform: translateY(-20px) translateX(10px);
    }
    50% {
        transform: translateY(-40px) translateX(-10px);
    }
    75% {
        transform: translateY(-20px) translateX(-5px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .controls {
        flex-direction: column;
    }
}

.menu-toggle {
    display: none;
    position: fixed;
    top: 20px;
    left: 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 8px 12px;
    z-index: 101;
    cursor: pointer;
}

.file-input {
    display: none;
}

.error-message {
    background-color: #ffe6e6;
    border: 1px solid #ffcccc;
    color: #cc0000;
    padding: 15px;
    border-radius: 4px;
    margin: 10px 0;
}
.url-info {
    color: #666;
    font-size: 0.9rem;
}

.url-info code {
    background-color: #f1f1f1;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}