:root {
    --bg-primary: #1a1b1e;
    --bg-secondary: #222326;
    --bg-tertiary: #2b2d31;
    --bg-hover: #32343a;
    --text-primary: #dcddde;
    --text-secondary: #8b8d94;
    --text-muted: #5c5e66;
    --accent: #7c6af6;
    --accent-dim: #5b4dc7;
    --link: #a78bfa;
    --wikilink: #c4b5fd;
    --tag-bg: #2d2b55;
    --tag-text: #a78bfa;
    --border: #3a3b40;
    --success: #4ade80;
    --warning: #fbbf24;
    --sources-color: #60a5fa;
    --entities-color: #4ade80;
    --concepts-color: #c084fc;
    --font-body: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", sans-serif;
    --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;
    --sidebar-width: 260px;
    --content-max: 780px;
}

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

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.65;
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 20px 0;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 100;
    transition: transform 0.2s ease;
}

.sidebar-header { padding: 0 16px 16px; }

.logo {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.sidebar-search { padding: 0 12px 16px; }
.sidebar-search input {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
}
.sidebar-search input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(124,106,246,0.15);
}
.sidebar-search input::placeholder { color: var(--text-muted); }

.sidebar-nav {
    list-style: none;
    padding: 0 8px 12px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 12px;
}
.sidebar-nav li a {
    display: block;
    padding: 6px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.15s;
}
.sidebar-nav li a:hover, .sidebar-nav li a.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-section { padding: 4px 8px; }
.sidebar-section h3 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 8px 12px 4px;
}
.sidebar-section ul { list-style: none; }
.sidebar-section ul li a {
    display: block;
    padding: 4px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    border-radius: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-section ul li a:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-toggle {
    display: block;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 200;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 20px;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
}

/* Desktop: sidebar collapsed */
.sidebar.collapsed {
    transform: translateX(-100%);
}
.content.full-width {
    margin-left: 0;
}

/* Content */
.content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 40px;
    max-width: calc(var(--content-max) + var(--sidebar-width) + 80px);
}

.page-header { margin-bottom: 32px; }
.page-header h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
}
.subtitle { color: var(--text-secondary); font-size: 14px; }

/* Index grid */
.index-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.index-section h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.count {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 500;
}

/* Cards */
.card {
    display: block;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-primary);
    margin-bottom: 8px;
    transition: all 0.15s;
}
.card:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-dim);
    transform: translateY(-1px);
}
.card-title { font-weight: 600; font-size: 15px; margin-bottom: 4px; }
.card-meta {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--text-secondary);
}
.card-snippet {
    margin-top: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Tags */
.tag {
    background: var(--tag-bg);
    color: var(--tag-text);
    padding: 1px 7px;
    border-radius: 4px;
    font-size: 11px;
}
.tag-pill {
    display: inline-block;
    background: var(--tag-bg);
    color: var(--tag-text);
    padding: 4px 12px;
    border-radius: 14px;
    font-size: 13px;
    text-decoration: none;
    margin: 3px;
    transition: background 0.15s;
}
.tag-pill:hover { background: var(--accent-dim); color: white; }

.tags-cloud { margin-top: 40px; }
.tags-cloud h2 { font-size: 16px; margin-bottom: 12px; }
.tags-list { display: flex; flex-wrap: wrap; gap: 4px; }

.page-tags { margin-bottom: 20px; }

/* Badges */
.folder-badge {
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}
.folder-badge.sources { color: var(--sources-color); }
.folder-badge.entities { color: var(--entities-color); }
.folder-badge.concepts { color: var(--concepts-color); }

.type-badge {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
}
.date { font-size: 12px; color: var(--text-muted); }
.source-link {
    font-size: 12px;
    color: var(--accent);
    text-decoration: none;
    margin-left: 8px;
}
.source-link:hover { text-decoration: underline; }

.page-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

/* Markdown body */
.markdown-body { max-width: var(--content-max); }
.markdown-body h1 { font-size: 26px; font-weight: 700; margin: 28px 0 16px; letter-spacing: -0.02em; }
.markdown-body h2 { font-size: 20px; font-weight: 600; margin: 24px 0 12px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.markdown-body h3 { font-size: 16px; font-weight: 600; margin: 20px 0 8px; }
.markdown-body h4 { font-size: 14px; font-weight: 600; margin: 16px 0 6px; color: var(--text-secondary); }
.markdown-body p { margin: 0 0 14px; }
.markdown-body ul, .markdown-body ol { margin: 0 0 14px; padding-left: 24px; }
.markdown-body li { margin-bottom: 4px; }
.markdown-body blockquote {
    border-left: 3px solid var(--accent);
    padding: 8px 16px;
    margin: 14px 0;
    background: var(--bg-secondary);
    border-radius: 0 6px 6px 0;
    color: var(--text-secondary);
    font-style: italic;
}
.markdown-body code {
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}
.markdown-body pre {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    overflow-x: auto;
    margin: 14px 0;
}
.markdown-body pre code { background: none; padding: 0; }
.markdown-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 14px 0;
    font-size: 14px;
}
.markdown-body th, .markdown-body td {
    border: 1px solid var(--border);
    padding: 8px 12px;
    text-align: left;
}
.markdown-body th {
    background: var(--bg-tertiary);
    font-weight: 600;
}
.markdown-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}
.markdown-body strong { font-weight: 600; color: #fff; }
.markdown-body a { color: var(--link); text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; }
.markdown-body a.wikilink {
    color: var(--wikilink);
    background: rgba(124,106,246,0.08);
    padding: 0 3px;
    border-radius: 3px;
}
.markdown-body a.wikilink:hover { background: rgba(124,106,246,0.18); }
.markdown-body a.tag-link { color: var(--tag-text); text-decoration: none; }

/* Backlinks */
.backlinks {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}
.backlinks h3 { font-size: 14px; color: var(--text-secondary); margin-bottom: 10px; }
.backlinks ul { list-style: none; }
.backlinks li {
    padding: 6px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.backlinks li a { color: var(--wikilink); text-decoration: none; font-size: 14px; }
.backlinks li a:hover { text-decoration: underline; }
.bl-folder { font-size: 11px; color: var(--text-muted); }

/* Log */
.log-body .wikilink { color: var(--wikilink); }

/* Search */
.search-form-large {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}
.search-form-large input {
    flex: 1;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
}
.search-form-large input:focus { border-color: var(--accent); }
.search-form-large button {
    padding: 10px 20px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    font-weight: 500;
}
.search-form-large button:hover { background: var(--accent-dim); }
.result-count { color: var(--text-secondary); margin-bottom: 16px; font-size: 14px; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    margin-top: 12px;
}
.btn:hover { background: var(--bg-hover); }

/* Graph */
.graph-container { width: 100%; }
.graph-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}
.graph-header h1 { font-size: 28px; }
.graph-legend { display: flex; gap: 16px; }
.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}
.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}
.dot.sources { background: var(--sources-color); }
.dot.entities { background: var(--entities-color); }
.dot.concepts { background: var(--concepts-color); }

#graph {
    width: 100%;
    height: calc(100vh - 160px);
    background: var(--bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
}

/* Lint */
.lint-grid { display: grid; gap: 20px; }
.lint-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
}
.lint-section h2 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.lint-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; }
.lint-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 700;
    padding: 0 8px;
}
.lint-badge.error { background: #7f1d1d; color: #fca5a5; }
.lint-badge.warning { background: #78350f; color: #fcd34d; }
.lint-badge.success { background: #14532d; color: #86efac; }
.lint-list { list-style: none; }
.lint-list li {
    padding: 6px 0;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border);
}
.lint-list li:last-child { border-bottom: none; }
.lint-list li a { color: var(--wikilink); text-decoration: none; }
.lint-list li a:hover { text-decoration: underline; }
.lint-arrow { color: var(--text-muted); font-size: 12px; }
.lint-missing {
    color: #fca5a5;
    background: rgba(239,68,68,0.1);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 13px;
}
.lint-ok { color: var(--success); font-size: 13px; }

/* Responsive — tablet (iPad Air ~820px) */
@media (max-width: 1024px) {
    .sidebar {
        width: 220px;
    }
    .content {
        margin-left: 220px;
        padding: 30px 24px;
    }
}

/* Responsive — mobile + iPad portrait */
@media (max-width: 820px) {
    .sidebar {
        width: var(--sidebar-width);
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0,0,0,0.5);
    }
    .sidebar-toggle { display: block; }
    .content {
        margin-left: 0;
        padding: 60px 20px 20px;
        max-width: 100%;
    }
    .page-header h1 { font-size: 22px; }
    .markdown-body h1 { font-size: 22px; }
    .markdown-body h2 { font-size: 18px; }
    .graph-header { flex-direction: column; align-items: flex-start; }
    #graph { height: calc(100vh - 200px); }
    .inbox-item { flex-direction: column; align-items: flex-start; }
    .inbox-item-meta { width: 100%; justify-content: space-between; }
}