/* Reset y base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --border-color: #30363d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --success: #3fb950;
    --warning: #d29922;
    --danger: #f85149;
}

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

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

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 2rem 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

.logo i {
    font-size: 1.5rem;
    color: var(--accent);
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.nav-menu {
    flex: 1;
    padding: 1.5rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-item i {
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-footer small {
    color: var(--text-secondary);
    font-size: 0.75rem;
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: 280px;
    min-height: 100vh;
}

.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.search-form {
    display: flex;
    gap: 0.5rem;
    max-width: 600px;
}

.search-input {
    flex: 1;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
}

.search-btn {
    padding: 0.75rem 1.5rem;
    background: var(--accent);
    border: none;
    border-radius: 6px;
    color: white;
    cursor: pointer;
    transition: background 0.2s;
}

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

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

/* Welcome section */
.welcome {
    margin-bottom: 3rem;
}

.welcome h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.welcome p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

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

/* Category section */
.category-section {
    margin-bottom: 3rem;
}

.category-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.category-section h2 i {
    color: var(--accent);
}

/* Doc grid (cards) */
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.doc-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s;
    position: relative;
}

.doc-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.doc-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--accent);
}

.doc-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.doc-type {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Doc list */
.doc-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.doc-list-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s;
}

.doc-list-item:hover {
    border-color: var(--accent);
    background: var(--bg-tertiary);
}

.doc-list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.doc-list-header h3 {
    color: var(--accent);
    font-size: 1.1rem;
}

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

/* Document page */
.document-header {
    margin-bottom: 2rem;
}

.breadcrumb {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.breadcrumb a {
    color: var(--accent);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    margin: 0 0.5rem;
}

.document-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.document-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.document-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding: 1rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.doc-type-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 600;
}

.doc-type-badge.project { background: #1f6feb; color: white; }
.doc-type-badge.reference { background: #3fb950; color: white; }
.doc-type-badge.user { background: #d29922; color: white; }
.doc-type-badge.feedback { background: #8957e5; color: white; }
.doc-type-badge.other { background: #6e7681; color: white; }

/* Markdown content */
.markdown-body {
    padding: 2rem 0;
}

.markdown-body h1,
.markdown-body h2,
.markdown-body h3,
.markdown-body h4,
.markdown-body h5,
.markdown-body h6 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.25;
}

.markdown-body h1 {
    font-size: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.markdown-body h2 {
    font-size: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.markdown-body h3 {
    font-size: 1.25rem;
}

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

.markdown-body code {
    background: var(--bg-tertiary);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

.markdown-body pre {
    background: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: 1rem;
}

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

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

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

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

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

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

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

.markdown-body th {
    background: var(--bg-tertiary);
    font-weight: 600;
}

.markdown-body blockquote {
    border-left: 4px solid var(--border-color);
    padding-left: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* Document footer */
.document-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s;
}

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

/* Empty states */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state h2 {
    margin: 1rem 0;
    color: var(--text-primary);
}

.empty {
    color: var(--text-secondary);
    font-style: italic;
    padding: 2rem;
    text-align: center;
}

/* Error page */
.error-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.error-content {
    text-align: center;
    max-width: 500px;
}

.error-code {
    font-size: 6rem;
    color: var(--accent);
    margin-bottom: 1rem;
}

.error-content h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.error-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.error-detail {
    background: var(--bg-secondary);
    padding: 0.75rem;
    border-radius: 6px;
    margin: 1rem 0;
}

.error-detail code {
    color: var(--accent);
}

.btn-home {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    margin-top: 1rem;
    transition: background 0.2s;
}

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

/* Footer info */
.footer-info {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-info small {
    color: var(--text-secondary);
}

/* Search results */
.search-results h1 {
    margin-bottom: 1rem;
}

.search-info {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.search-info strong {
    color: var(--accent);
}

/* Category page */
.category-page h1 {
    margin-bottom: 0.5rem;
}

.category-info {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: static;
        height: auto;
    }

    .main-content {
        margin-left: 0;
    }

    .doc-grid {
        grid-template-columns: 1fr;
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .welcome h1 {
        font-size: 1.75rem;
    }
}