/* PlexiDocs - Modern Documentation UI */

:root {
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #818CF8;
    --secondary: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --bg: #F8FAFC;
    --bg-secondary: #F1F5F9;
    --card: #FFFFFF;
    --border: #E2E8F0;
    --text: #1E293B;
    --text-secondary: #64748B;
    --text-muted: #94A3B8;
    --sidebar-width: 280px;
    --header-height: 64px;
    --radius: 12px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    display: flex;
    min-height: 100vh;
}

/* ============ SIDEBAR ============ */
.sidebar {
    width: var(--sidebar-width);
    background: var(--card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo i {
    font-size: 1.5rem;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
}

.sidebar-search {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
}

.search-input-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.search-input-wrap:focus-within {
    border-color: var(--primary);
    background: white;
}

.search-input-wrap i {
    color: var(--text-muted);
}

.search-input-wrap input {
    flex: 1;
    border: none;
    background: none;
    font-size: 0.875rem;
    color: var(--text);
    outline: none;
}

.search-input-wrap kbd {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: inherit;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.875rem;
    transition: all 0.15s;
}

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

.nav-item.active {
    background: var(--primary);
    color: white;
}

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

.nav-section {
    margin-top: 1rem;
}

.nav-section-title {
    padding: 0.5rem 0.875rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ============ MAIN CONTENT ============ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-header {
    height: var(--header-height);
    background: var(--card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

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

.breadcrumb a:hover {
    color: var(--primary);
}

.breadcrumb .separator {
    color: var(--text-muted);
}

.breadcrumb .current {
    color: var(--text);
    font-weight: 500;
}

.content-wrapper {
    flex: 1;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

.main-footer {
    padding: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--border);
}

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.15s;
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
}

.btn-outline:hover {
    background: var(--bg-secondary);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
}

/* ============ PAGE HEADER ============ */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.page-header h1 i {
    color: var(--primary);
}

.page-subtitle {
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.stat-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--primary);
    color: white;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* ============ SEARCH ============ */
.quick-search-bar, .search-form-large {
    margin-bottom: 2rem;
}

.search-input-large {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--card);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.search-input-large:focus-within {
    border-color: var(--primary);
}

.search-input-large i {
    color: var(--text-muted);
    font-size: 1.25rem;
}

.search-input-large input {
    flex: 1;
    border: none;
    background: none;
    font-size: 1rem;
    color: var(--text);
    outline: none;
}

/* ============ CATEGORIES & DOCS ============ */
.categories-grid {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.category-section {
    scroll-margin-top: calc(var(--header-height) + 1rem);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border);
}

.category-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
}

.category-info h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.doc-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
}

.doc-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
}

.doc-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.doc-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.doc-card-content {
    flex: 1;
}

.doc-card-content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.doc-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.doc-card-arrow {
    color: var(--text-muted);
}

.doc-card:hover .doc-card-arrow {
    color: var(--primary);
}

/* ============ DOCUMENT VIEW ============ */
.doc-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
}

.doc-toc {
    position: sticky;
    top: calc(var(--header-height) + 2rem);
    height: fit-content;
}

.toc-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.toc-header h4 {
    font-size: 0.875rem;
    font-weight: 600;
}

.toc-nav ul {
    list-style: none;
}

.toc-nav a {
    display: block;
    padding: 0.375rem 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s;
}

.toc-nav a:hover {
    color: var(--primary);
}

.toc-nav ul ul {
    padding-left: 1rem;
}

.toc-actions {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.doc-content {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
}

.doc-header {
    padding: 2rem;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(135deg, var(--bg) 0%, var(--bg-secondary) 100%);
}

.doc-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    background: var(--primary);
    color: white;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.doc-header h1 {
    font-size: 1.75rem;
}

.doc-body {
    padding: 2rem;
}

/* ============ MARKDOWN CONTENT ============ */
.markdown-content h1 { font-size: 1.75rem; margin: 2rem 0 1rem; }
.markdown-content h2 { font-size: 1.5rem; margin: 2rem 0 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.markdown-content h3 { font-size: 1.25rem; margin: 1.5rem 0 0.75rem; }
.markdown-content h4 { font-size: 1.1rem; margin: 1.25rem 0 0.5rem; }

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

.markdown-content ul, .markdown-content ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

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

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

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

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

.markdown-content tr:nth-child(even) {
    background: var(--bg);
}

.markdown-content code {
    background: var(--bg-secondary);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875em;
}

.markdown-content pre {
    background: #1E293B;
    color: #E2E8F0;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1rem 0;
}

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

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

.markdown-content strong {
    font-weight: 600;
}

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

/* ============ SEARCH RESULTS ============ */
.search-results {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.search-result-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s;
}

.search-result-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.result-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.result-content {
    flex: 1;
}

.result-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.result-category {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.match-context {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--bg);
    padding: 0.5rem;
    border-radius: 6px;
    margin-top: 0.5rem;
}

.score-badge {
    background: var(--secondary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

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

.empty-state i {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.empty-state .btn {
    margin-top: 1.5rem;
}

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

.error-content {
    text-align: center;
}

.error-code {
    font-size: 6rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.error-content h1 {
    margin: 1rem 0 0.5rem;
}

.error-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.error-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* ============ SEARCH MODAL ============ */
.search-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
}

.search-modal.active {
    display: flex;
}

.search-modal-content {
    width: 90%;
    max-width: 600px;
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.search-modal-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
}

.search-modal-header i {
    color: var(--text-muted);
}

.search-modal-header input {
    flex: 1;
    border: none;
    background: none;
    font-size: 1rem;
    outline: none;
}

.search-modal-results {
    max-height: 400px;
    overflow-y: auto;
    padding: 1rem;
}

.search-hint {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .doc-layout {
        grid-template-columns: 1fr;
    }

    .doc-toc {
        position: static;
        margin-bottom: 1.5rem;
        padding: 1rem;
        background: var(--bg-secondary);
        border-radius: var(--radius);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

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

    .mobile-menu-btn {
        display: block;
    }

    .page-header {
        flex-direction: column;
        gap: 1rem;
    }

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

    .content-wrapper {
        padding: 1rem;
    }
}

/* ============ PRINT ============ */
@media print {
    .sidebar, .top-header, .doc-toc, .toc-actions, .doc-nav {
        display: none !important;
    }

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

    .doc-content {
        border: none;
        box-shadow: none;
    }
}