/* ---- Handbook Layout ---- */
.handbook-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: calc(100vh - 64px);
    max-width: 1200px;
    margin: 0 auto;
}

/* Sidebar */
.handbook-sidebar {
    border-right: 1px solid rgba(255,255,255,0.06);
    padding: 2rem 0;
    position: sticky;
    top: 0;
    height: calc(100vh - 64px);
    overflow-y: auto;
}

.handbook-sidebar-brand {
    display: block;
    padding: 0 1.5rem 1.5rem;
    font-weight: 700;
    font-size: 0.9rem;
    color: #e5e7eb;
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    margin-bottom: 1rem;
}

.handbook-nav-section { margin-bottom: 1.5rem; padding: 0 1rem; }

.handbook-nav-section-title {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #6b7280;
    display: block;
    margin-bottom: 0.4rem;
    padding: 0 0.5rem;
}

.handbook-nav-pages {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
}

.handbook-nav-link {
    display: block;
    padding: 0.35rem 0.5rem;
    font-size: 0.85rem;
    color: #9ca3af;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.12s;
}

.handbook-nav-link:hover {
    color: #e5e7eb;
    background: rgba(255,255,255,0.04);
}

.handbook-nav-link--active {
    color: #60a5fa;
    background: rgba(30,144,255,0.08);
    font-weight: 600;
}

/* Main */
.handbook-main {
    padding: 2.5rem 3rem;
    max-width: 800px;
}

/* Breadcrumbs */
.handbook-breadcrumbs {
    font-size: 0.8rem;
    color: #6b7280;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.handbook-breadcrumbs a { color: #6b7280; text-decoration: none; }
.handbook-breadcrumbs a:hover { color: #60a5fa; }
.handbook-breadcrumb-sep { opacity: 0.4; }
.handbook-breadcrumb-current { color: #e5e7eb; }

/* Markdown content */
.handbook-content h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: #e5e7eb;
    margin: 0 0 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.handbook-content h2 {
    font-size: 1.1rem;
    font-weight: 700;
    color: #e5e7eb;
    margin: 2rem 0 0.75rem;
}

.handbook-content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: #60a5fa;
    margin: 1.5rem 0 0.5rem;
}

.handbook-content p {
    font-size: 0.9rem;
    line-height: 1.75;
    color: #9ca3af;
    margin: 0 0 1rem;
}

.handbook-content a { color: #60a5fa; text-decoration: none; }
.handbook-content a:hover { text-decoration: underline; }

.handbook-content strong { color: #e5e7eb; }

.handbook-content code {
    font-family: 'Consolas', monospace;
    font-size: 0.82rem;
    background: rgba(255,255,255,0.06);
    padding: 0.1rem 0.35rem;
    border-radius: 3px;
    color: #60a5fa;
}

.handbook-content pre {
    background: #0a0a0a;
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 6px;
    padding: 1rem 1.25rem;
    overflow-x: auto;
    margin: 1rem 0;
}

.handbook-content pre code {
    background: none;
    padding: 0;
    color: #e5e7eb;
    font-size: 0.8rem;
}

.handbook-content ul, .handbook-content ol {
    color: #9ca3af;
    font-size: 0.9rem;
    line-height: 1.75;
    padding-left: 1.5rem;
    margin: 0 0 1rem;
}

.handbook-content li { margin-bottom: 0.25rem; }

.handbook-content blockquote {
    border-left: 3px solid #fbbf24;
    background: rgba(251,191,36,0.06);
    padding: 0.75rem 1rem;
    margin: 1rem 0;
    border-radius: 0 6px 6px 0;
}

.handbook-content blockquote p { margin: 0; font-size: 0.85rem; }

.handbook-content hr {
    border: none;
    border-top: 1px solid rgba(255,255,255,0.06);
    margin: 2rem 0;
}

.handbook-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    margin: 1rem 0;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 6px;
    overflow: hidden;
}

.handbook-content thead th {
    background: rgba(255,255,255,0.04);
    color: #9ca3af;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.6rem 0.75rem;
    text-align: left;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.handbook-content td {
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    color: #9ca3af;
    line-height: 1.5;
}

.handbook-content tbody tr:hover {
    background: rgba(255,255,255,0.02);
}

.handbook-content em {
    color: #6b7280;
    font-style: italic;
}

/* Prev / Next */
.handbook-pagination {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.06);
}

.handbook-pagination-link {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    padding: 0.75rem 1rem;
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.15s;
    max-width: 45%;
}

.handbook-pagination-link:hover {
    border-color: rgba(30,144,255,0.3);
    background: rgba(30,144,255,0.04);
}

.handbook-pagination-link--next { text-align: right; margin-left: auto; }

.handbook-pagination-dir { font-size: 0.72rem; color: #6b7280; }
.handbook-pagination-title { font-size: 0.85rem; font-weight: 600; color: #60a5fa; }

/* Mobile */
@media (max-width: 768px) {
    .handbook-layout { grid-template-columns: 1fr; }
    .handbook-sidebar { display: none; }
    .handbook-main { padding: 1.5rem; }
}