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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --bg-color: #ffffff;
    --sidebar-bg: #1e293b;
    --sidebar-hover: #334155;
    --text-color: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --code-bg: #f8fafc;
    --code-border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

.container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar Styles */
.sidebar {
    width: 300px;
    background-color: var(--sidebar-bg);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #ffffff;
}

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.search-box {
    margin-bottom: 1rem;
}

.search-box input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: rgba(255, 255, 255, 0.15);
}

.nav-menu {
    list-style: none;
}

.nav-item {
    margin-bottom: 0.25rem;
}

.nav-item a {
    display: block;
    padding: 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    border-radius: 0.5rem;
    transition: all 0.2s;
    font-size: 0.875rem;
    cursor: pointer;
}

.nav-item a:hover {
    background-color: var(--sidebar-hover);
    color: #ffffff;
}

.nav-item a.active {
    background-color: var(--primary-color);
    color: #ffffff;
    font-weight: 500;
}

.nav-category {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.5);
}

.nav-category:first-child {
    margin-top: 0;
}

/* Main Content Styles */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background-color: var(--bg-color);
}

.content-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: #ffffff;
    box-shadow: var(--shadow);
}

.sidebar-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.sidebar-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: all 0.3s;
}

.content-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
}

.content-body {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

.welcome-message {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-light);
}

.welcome-message h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

/* Markdown Content Styles */
.markdown-content {
    max-width: 900px;
    margin: 0 auto;
}

.markdown-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    margin-top: 2rem;
    color: var(--text-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.markdown-content h2 {
    font-size: 2rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.markdown-content h3 {
    font-size: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.markdown-content h4 {
    font-size: 1.25rem;
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.markdown-content p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

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

.markdown-content li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

.markdown-content a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

.markdown-content a:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.markdown-content code {
    background-color: var(--code-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    font-family: 'Courier New', 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
    color: #dc2626;
    border: 1px solid var(--code-border);
}

.markdown-content pre {
    background-color: #1e293b;
    border: 1px solid #334155;
    border-radius: 0.5rem;
    padding: 1rem;
    overflow-x: auto;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.markdown-content pre code {
    background: none;
    padding: 0;
    border: none;
    color: #e2e8f0;
    font-size: 0.875rem;
    line-height: 1.6;
    font-family: 'Courier New', 'Consolas', 'Monaco', monospace;
}

/* Custom syntax highlighting colors - better than light blue */
.markdown-content pre code .hljs-keyword,
.markdown-content pre code .hljs-selector-tag,
.markdown-content pre code .hljs-built_in,
.markdown-content pre code .hljs-name {
    color: #f472b6; /* Pink for keywords */
}

.markdown-content pre code .hljs-string,
.markdown-content pre code .hljs-attr {
    color: #34d399; /* Green for strings */
}

.markdown-content pre code .hljs-number,
.markdown-content pre code .hljs-literal {
    color: #60a5fa; /* Blue for numbers */
}

.markdown-content pre code .hljs-comment,
.markdown-content pre code .hljs-quote {
    color: #94a3b8; /* Gray for comments */
    font-style: italic;
}

.markdown-content pre code .hljs-function,
.markdown-content pre code .hljs-title {
    color: #fbbf24; /* Yellow for functions */
}

.markdown-content pre code .hljs-variable,
.markdown-content pre code .hljs-template-variable {
    color: #a78bfa; /* Purple for variables */
}

.markdown-content pre code .hljs-property,
.markdown-content pre code .hljs-attribute {
    color: #fb7185; /* Rose for properties */
}

.markdown-content pre code .hljs-type,
.markdown-content pre code .hljs-class {
    color: #38bdf8; /* Sky blue for types */
}

.markdown-content pre code .hljs-tag,
.markdown-content pre code .hljs-selector-id,
.markdown-content pre code .hljs-selector-class {
    color: #f87171; /* Red for tags */
}

.markdown-content pre code .hljs-meta,
.markdown-content pre code .hljs-meta-keyword {
    color: #c084fc; /* Purple for meta */
}

.markdown-content pre code .hljs-punctuation {
    color: #cbd5e1; /* Light gray for punctuation */
}

.markdown-content pre code .hljs-operator {
    color: #f59e0b; /* Amber for operators */
}

.markdown-content pre code .hljs-regexp {
    color: #10b981; /* Emerald for regex */
}

.markdown-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
    margin-left: 0;
    margin-bottom: 1rem;
    color: var(--text-light);
    font-style: italic;
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    border-radius: 0.5rem;
    overflow: hidden;
}

.markdown-content table th,
.markdown-content table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.markdown-content table th {
    background-color: var(--code-bg);
    font-weight: 600;
    color: var(--text-color);
}

.markdown-content table tr:hover {
    background-color: #f8fafc;
}

.markdown-content hr {
    border: none;
    border-top: 2px solid var(--border-color);
    margin: 2rem 0;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-light);
}

.loading::after {
    content: '...';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100vh;
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-toggle {
        display: flex;
    }

    .content-body {
        padding: 1.5rem;
    }

    .markdown-content h1 {
        font-size: 2rem;
    }

    .markdown-content h2 {
        font-size: 1.75rem;
    }
}

/* Scrollbar Styling */
.sidebar-content::-webkit-scrollbar,
.content-body::-webkit-scrollbar {
    width: 8px;
}

.sidebar-content::-webkit-scrollbar-track,
.content-body::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
}

.sidebar-content::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

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

.content-body::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}