:root {
    --primary: #5156be;
    --primary-hover: #3b3f94;
    --primary-light: rgba(81, 86, 190, 0.08);
    --primary-bg: rgba(81, 86, 190, 0.04);
    --text-dark: #1a1a2e;
    --text-body: #404040;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    --bg-page: #ffffff;
    --bg-sidebar: #f9fafb;
    --bg-code: #0d1117;
    --border: #e5e7eb;
    --border-light: #f3f4f6;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --sidebar-w: 260px;
    --toc-w: 200px;
    --header-h: 56px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', Roboto, sans-serif;
    color: var(--text-body);
    background: var(--bg-page);
    font-size: 15px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-hover); text-decoration: underline; }

/* ===== TOP HEADER ===== */
.top-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    background: #fff;
    border-bottom: 1px solid var(--border);
    z-index: 100;
    display: flex;
    align-items: center;
    padding: 0 24px;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 100%;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none !important;
    color: var(--text-dark);
    font-size: 17px;
    font-weight: 700;
    flex-shrink: 0;
}

.logo:hover { color: var(--primary); text-decoration: none !important; }
.logo svg { flex-shrink: 0; }

.logo-divider {
    width: 1px;
    height: 24px;
    background: var(--border);
}

.logo-sub {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-link {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.15s;
    text-decoration: none !important;
}

.header-link:hover { color: var(--primary); background: var(--primary-light); text-decoration: none !important; }

.header-link i { margin-right: 4px; }

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 20px;
    color: var(--text-dark);
    cursor: pointer;
    padding: 4px;
}

/* ===== THREE-COLUMN LAYOUT ===== */
.docs-layout {
    display: flex;
    margin-top: var(--header-h);
    min-height: calc(100vh - var(--header-h));
}

/* ===== LEFT SIDEBAR (site nav) ===== */
.sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    position: fixed;
    top: var(--header-h);
    left: 0;
    bottom: 0;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 16px 0;
    z-index: 50;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.sidebar-section { margin-bottom: 4px; }

.sidebar-heading {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    padding: 16px 20px 6px;
}

.sidebar-links { list-style: none; }

.sidebar-links a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 7px 20px 7px 24px;
    color: var(--text-body);
    font-size: 13.5px;
    font-weight: 400;
    border-left: 2px solid transparent;
    transition: all 0.12s;
    text-decoration: none !important;
}

.sidebar-links a:hover {
    color: var(--primary);
    background: var(--primary-light);
    text-decoration: none !important;
}

.sidebar-links a.active {
    color: var(--primary);
    font-weight: 600;
    background: var(--primary-light);
    border-left-color: var(--primary);
}

.sidebar-links a i {
    font-size: 16px;
    width: 18px;
    text-align: center;
    opacity: 0.6;
}

.sidebar-links a.active i { opacity: 1; }

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    margin-right: var(--toc-w);
    min-width: 0;
    padding: 40px 56px 80px;
    max-width: calc(100% - var(--sidebar-w) - var(--toc-w));
}

/* ===== RIGHT TOC (on this page) ===== */
.right-toc {
    width: var(--toc-w);
    flex-shrink: 0;
    position: fixed;
    top: var(--header-h);
    right: 0;
    bottom: 0;
    padding: 24px 16px;
    overflow-y: auto;
    border-left: 1px solid var(--border-light);
}

.right-toc-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.right-toc-list { list-style: none; }

.right-toc-list a {
    display: block;
    padding: 4px 0 4px 12px;
    color: var(--text-muted);
    font-size: 12.5px;
    border-left: 2px solid transparent;
    transition: all 0.12s;
    text-decoration: none !important;
    line-height: 1.5;
}

.right-toc-list a:hover { color: var(--primary); text-decoration: none !important; }
.right-toc-list a.active { color: var(--primary); border-left-color: var(--primary); font-weight: 500; }

/* ===== CONTENT TYPOGRAPHY ===== */
.main-content h1 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-dark);
    margin: 0 0 8px;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.main-content .subtitle {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 32px;
    line-height: 1.6;
}

.main-content h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
    margin: 48px 0 12px;
    padding-top: 24px;
    letter-spacing: -0.2px;
    scroll-margin-top: 80px;
}

.main-content h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 32px 0 10px;
    scroll-margin-top: 80px;
}

.main-content h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-dark);
    margin: 24px 0 8px;
}

.main-content p { margin-bottom: 16px; }
.main-content ul, .main-content ol { margin-bottom: 16px; padding-left: 20px; }
.main-content li { margin-bottom: 6px; }

.main-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 32px 0;
}

/* ===== CODE ===== */
code {
    background: var(--primary-light);
    color: var(--primary);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 13px;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
}

.code-block {
    background: var(--bg-code);
    border-radius: 8px;
    padding: 16px 20px;
    margin: 12px 0 20px;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    color: #e6edf3;
    overflow-x: auto;
    position: relative;
    line-height: 1.55;
    border: 1px solid #21262d;
}

.code-block code { background: none; color: inherit; padding: 0; font-size: inherit; white-space: pre; display: block; }

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(255,255,255,0.08);
    color: #8b949e;
    border: 1px solid rgba(255,255,255,0.1);
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.15s;
}

.copy-btn:hover { background: rgba(255,255,255,0.15); color: #e6edf3; }

/* ===== CALLOUT BOXES ===== */
.callout {
    padding: 12px 16px;
    border-radius: 6px;
    margin: 12px 0 20px;
    font-size: 14px;
    line-height: 1.6;
    display: flex;
    gap: 10px;
}

.callout i { font-size: 16px; flex-shrink: 0; margin-top: 3px; }

.callout-info { background: rgba(81,86,190,0.06); border: 1px solid rgba(81,86,190,0.15); }
.callout-info i { color: var(--primary); }
.callout-warn { background: rgba(245,158,11,0.06); border: 1px solid rgba(245,158,11,0.2); }
.callout-warn i { color: var(--warning); }
.callout-success { background: rgba(16,185,129,0.06); border: 1px solid rgba(16,185,129,0.2); }
.callout-success i { color: var(--success); }
.callout-danger { background: rgba(239,68,68,0.05); border: 1px solid rgba(239,68,68,0.15); }
.callout-danger i { color: var(--danger); }

/* ===== TABLES ===== */
.doc-table { width: 100%; margin: 12px 0 20px; border-collapse: collapse; font-size: 14px; }
.doc-table th { background: var(--bg-sidebar); padding: 10px 14px; text-align: left; font-weight: 600; font-size: 12.5px; color: var(--text-dark); border: 1px solid var(--border); }
.doc-table td { padding: 10px 14px; border: 1px solid var(--border); }
.doc-table tr:hover td { background: var(--primary-bg); }

/* ===== CARDS / FEATURE GRID ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 12px;
    margin: 16px 0 20px;
}

.card-item {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    transition: all 0.15s;
}

.card-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }

.card-item h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 6px;
    font-size: 14px;
}

.card-item h4 i { color: var(--primary); font-size: 16px; }
.card-item p { margin: 0; font-size: 13px; color: var(--text-muted); line-height: 1.5; }

/* Link cards for index */
.card-item a.card-link {
    text-decoration: none !important;
    color: inherit;
    display: block;
}

/* ===== STEPS ===== */
.steps { margin: 16px 0 20px; }

.step-item {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.step-num {
    width: 28px;
    height: 28px;
    background: var(--primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    flex-shrink: 0;
    margin-top: 1px;
}

.step-body { flex: 1; }
.step-body h4 { margin: 0 0 4px; font-size: 14.5px; }
.step-body p { margin: 0; font-size: 14px; color: var(--text-body); }

/* ===== FLOW BADGES ===== */
.flow-row {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    margin: 16px 0 20px;
}

.flow-badge {
    background: var(--primary-light);
    color: var(--primary);
    padding: 5px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.flow-badge.danger { background: rgba(239,68,68,0.08); color: var(--danger); }
.flow-arrow { color: var(--text-light); font-size: 14px; }

/* ===== BADGES ===== */
.badge { display: inline-block; padding: 2px 8px; border-radius: 50px; font-size: 11px; font-weight: 600; }
.badge-trial { background: rgba(245,158,11,0.1); color: #d97706; }
.badge-standard { background: var(--primary-light); color: var(--primary); }
.badge-business { background: rgba(16,185,129,0.1); color: #059669; }
.badge-enterprise { background: rgba(239,68,68,0.08); color: #dc2626; }

/* ===== PAGE NAV (prev/next) ===== */
.page-nav {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    margin-top: 56px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.page-nav a {
    display: flex;
    flex-direction: column;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    text-decoration: none !important;
    transition: all 0.15s;
    max-width: 48%;
}

.page-nav a:hover { border-color: var(--primary); background: var(--primary-bg); text-decoration: none !important; }

.page-nav .label { font-size: 11px; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.5px; }
.page-nav .title { font-weight: 600; color: var(--text-dark); font-size: 14px; }
.page-nav a.next { margin-left: auto; text-align: right; }

/* ===== HERO (index only) ===== */
.hero {
    padding: 40px 0 32px;
    margin-bottom: 8px;
}

.hero h1 { font-size: 36px; margin-bottom: 12px; letter-spacing: -0.8px; }
.hero p { font-size: 17px; color: var(--text-muted); max-width: 560px; line-height: 1.6; }

.quick-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin: 20px 0;
}

.quick-card {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    text-decoration: none !important;
    color: inherit;
    display: block;
    transition: all 0.15s;
}

.quick-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-1px); color: inherit; text-decoration: none !important; }

.quick-card .icon {
    width: 40px;
    height: 40px;
    background: var(--primary-light);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.quick-card .icon i { font-size: 18px; color: var(--primary); }
.quick-card h4 { font-size: 14px; margin: 0 0 4px; color: var(--text-dark); }
.quick-card p { font-size: 12.5px; margin: 0; color: var(--text-muted); }

/* ===== FOOTER ===== */
.doc-footer {
    margin-left: var(--sidebar-w);
    margin-right: var(--toc-w);
    padding: 20px 56px;
    font-size: 12.5px;
    color: var(--text-light);
    border-top: 1px solid var(--border-light);
}

.doc-footer a { color: var(--text-muted); margin: 0 8px; text-decoration: none !important; }
.doc-footer a:hover { color: var(--primary); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
    .right-toc { display: none; }
    .main-content { margin-right: 0; max-width: calc(100% - var(--sidebar-w)); }
    .doc-footer { margin-right: 0; }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); transition: transform 0.2s ease; z-index: 200; }
    .sidebar.open { transform: translateX(0); box-shadow: 4px 0 20px rgba(0,0,0,0.1); }
    .sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.3); z-index: 150; }
    .sidebar-overlay.open { display: block; }
    .main-content { margin-left: 0; max-width: 100%; padding: 24px 20px 60px; }
    .doc-footer { margin-left: 0; padding: 16px 20px; }
    .mobile-toggle { display: block; }
    .header-right .header-link span { display: none; }
    .page-nav { flex-direction: column; }
    .page-nav a { max-width: 100%; }
    .hero h1 { font-size: 26px; }
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }