body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: #4FB8B0;
    color: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    gap: 0.5rem;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.logo:hover {
    opacity: 0.8;
}

.github-link {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    transition: color 0.2s ease;
}

.github-link:hover {
    color: #0c1017;
}

/* Main Navigation */
.main-nav {
    background: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
    padding: 0;
    overflow-x: auto;
}

.nav-container {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    align-items: center;
}

.nav-tab {
    background: none;
    border: none;
    padding: 1rem 1.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: #6c757d;
    border-bottom: 3px solid transparent;
    transition: all 0.2s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-tab:hover {
    color: #4FB8B0;
    background: rgba(79, 184, 176, 0.1);
}

.nav-tab.active {
    color: #4FB8B0;
    border-bottom-color: #4FB8B0;
    background: rgba(79, 184, 176, 0.1);
}

/* Copy Page Dropdown */
.copy-page-dropdown {
    position: relative;
    flex-shrink: 0;
}

.copy-page-btn {
    background: none;
    border: 1px solid #dee2e6;
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 0.85rem;
    color: #495057;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.copy-page-btn:hover {
    background: #4FB8B0;
    color: white;
    border-color: #4FB8B0;
}

.copy-page-btn.active {
    background: #4FB8B0;
    color: white;
    border-color: #4FB8B0;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    min-width: 250px;
    z-index: 1000;
    display: none;
    margin-top: 0.25rem;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: #495057;
    text-decoration: none;
    transition: background-color 0.2s ease;
    gap: 0.75rem;
}

.dropdown-item:hover {
    background: #f8f9fa;
    color: #4FB8B0;
}

.dropdown-content {
    display: flex;
    flex-direction: column;
}

.dropdown-title {
    font-weight: 500;
    font-size: 0.9rem;
}

.dropdown-subtitle {
    font-size: 0.75rem;
    color: #6c757d;
    margin-top: 0.125rem;
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

/* Resource Navigation */
.resource-nav {
    background: #f8f9fa;
    padding: 1rem;
    border-bottom: 1px solid #e9ecef;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

/*.resource-nav h2 {*/
/*    !* Hide section heading since it's already shown in the active main nav tab *!*/
/*    display: none;*/
/*}*/

.resource-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
    flex: 1;
}

.resource-link {
    background: white;
    border: 1px solid #dee2e6;
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    font-size: 0.85rem;
    color: #495057;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.resource-link:hover {
    background: #4FB8B0;
    color: white;
    border-color: #4FB8B0;
}

.resource-link.active {
    background: #4FB8B0;
    color: white;
    border-color: #4FB8B0;
}

/* Markdown Content */
.markdown-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.markdown-content p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.markdown-content h1 {
    color: #2c3e50;
    border-bottom: 3px solid #4FB8B0;
    padding-bottom: 0.75rem;
    margin-bottom: 2rem;
    font-size: 2.2rem;
    font-weight: 600;
}

.markdown-content h2 {
    color: #2c3e50;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    font-size: 2rem;
    font-weight: 600;
    border-left: 4px solid #4FB8B0;
    padding-left: 1rem;
}

.markdown-content h3 {
    color: #4FB8B0;
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 600;
}

.markdown-content code {
    background: #f8f9fa;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    font-size: 0.9em;
}

.markdown-content pre {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    border-left: 4px solid #4FB8B0;
}

.markdown-content pre code {
    background: none;
    padding: 0;
}

.markdown-content blockquote {
    border-left: 4px solid #4FB8B0;
    margin: 1rem 0;
    padding: 0.5rem 1rem;
    background: rgba(79, 184, 176, 0.1);
    color: #2c3e50;
}

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

.markdown-content th,
.markdown-content td {
    border: 1px solid #dee2e6;
    padding: 0.75rem;
    text-align: left;
}

.markdown-content th {
    background: #f8f9fa;
    font-weight: 600;
}

.markdown-content ul {
    padding-left: 1.5rem;
    list-style-type: disc;
}

.markdown-content ol {
    padding-left: 1.5rem;
    list-style-type: decimal;
}

.markdown-content ul ul {
    list-style-type: circle;
}

.markdown-content ul ul ul {
    list-style-type: square;
}

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

.markdown-content a {
    color: #4FB8B0;
    text-decoration: none;
}

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

/* Mermaid Diagrams */
.mermaid-diagram {
    text-align: center;
    margin: 2rem 0;
    padding: 1rem;
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    overflow-x: auto;
}

.mermaid-diagram svg {
    max-width: 100%;
    height: auto;
}

.mermaid-error {
    margin: 2rem 0;
}

.mermaid-error .error {
    text-align: left;
    padding: 1rem;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 6px;
    color: #721c24;
}

.mermaid-error details {
    margin-top: 1rem;
}

.mermaid-error summary {
    cursor: pointer;
    font-weight: 500;
    color: #495057;
}

.mermaid-error pre {
    margin-top: 0.5rem;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    padding: 0.75rem;
    font-size: 0.85rem;
    overflow-x: auto;
}

/* Loading and Error States */
.loading {
    text-align: center;
    padding: 3rem;
    color: #6c757d;
    font-style: italic;
}

.error {
    text-align: center;
    padding: 3rem;
    color: #dc3545;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 6px;
    margin: 2rem;
}

/* GitHub-style Callouts */
.markdown-content blockquote[data-callout] {
    border-left: 4px solid;
    margin: 1.5rem 0;
    padding: 1rem;
    border-radius: 6px;
    position: relative;
}

.markdown-content blockquote[data-callout="info"] {
    border-left-color: #0969da;
    background: rgba(9, 105, 218, 0.1);
    color: #0969da;
}

.markdown-content blockquote[data-callout="note"] {
    border-left-color: #0969da;
    background: rgba(9, 105, 218, 0.1);
    color: #0969da;
}

.markdown-content blockquote[data-callout="warning"] {
    border-left-color: #d1242f;
    background: rgba(209, 36, 47, 0.1);
    color: #d1242f;
}

.markdown-content blockquote[data-callout="tip"] {
    border-left-color: #1a7f37;
    background: rgba(26, 127, 55, 0.1);
    color: #1a7f37;
}

.markdown-content blockquote[data-callout="caution"] {
    border-left-color: #bf8700;
    background: rgba(191, 135, 0, 0.1);
    color: #bf8700;
}

.markdown-content blockquote[data-callout]::before {
    content: attr(data-callout-title);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 1.2rem;
    display: block;
    margin-bottom: 0.5rem;
    text-align: center;
}

.markdown-content blockquote[data-callout="info"]::before {
    color: #0969da;
}

.markdown-content blockquote[data-callout="note"]::before {
    color: #0969da;
}

.markdown-content blockquote[data-callout="warning"]::before {
    color: #d1242f;
}

.markdown-content blockquote[data-callout="tip"]::before {
    color: #1a7f37;
}

.markdown-content blockquote[data-callout="caution"]::before {
    color: #bf8700;
}

footer {
    background-color: #4FB8B0;
    color: #ffffff;
    padding: 1rem 0;
    font-size: 0.85rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
}

.footer-github {
    color: #e9ecef;
    font-size: 0.8rem;
}

.footer-github a {
    color: #ffffff;
    text-decoration: none;
}

.footer-github a:hover {
    text-decoration: underline;
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-links a,
.footer-links span {
    color: #ffffff;
    text-decoration: none;
    white-space: nowrap;
}

.footer-links a:hover {
    text-decoration: underline;
}

.footer-links::before {
    content: "";
}

.footer-links > *:not(:last-child)::after {
    content: "|";
    color: #2a7a73;
    margin-left: 1rem;
    pointer-events: none;
    text-decoration: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 0.5rem;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .nav-tab {
        padding: 0.75rem 1rem;
        font-size: 0.8rem;
    }

    .resource-nav {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }

    .resource-links {
        flex-direction: column;
    }

    .copy-page-dropdown {
        align-self: stretch;
    }

    .copy-page-btn {
        width: 100%;
        justify-content: center;
    }

    .dropdown-menu {
        left: 0;
        right: 0;
        min-width: auto;
    }

    .markdown-content {
        padding: 1rem;
    }

    .markdown-content table {
        font-size: 0.9rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }

    .footer-links > *:not(:last-child)::after {
        display: none;
    }

    .footer-github {
        font-size: 0.75rem;
    }
}