/* ===================================================
   QuantiVector Learning Center — Dark SaaS Docs Theme
   Minimal · Technical · High readability
   =================================================== */

:root{
  --d-bg: #0a0b0e;
  --d-bg-1: #0e1013;
  --d-bg-2: #131519;
  --d-bg-3: #17191e;
  --d-border: rgba(255,255,255,.08);
  --d-border-strong: rgba(255,255,255,.14);
  --d-text: #e9eaee;
  --d-text-muted: #9a9dab;
  --d-text-faint: #666a78;
  --d-accent: #e0102a;
  --d-accent-soft: rgba(224,16,42,.14);
  --d-accent-border: rgba(224,16,42,.35);
  --d-green: #22c55e;
  --d-green-soft: rgba(34,197,94,.12);
  --d-amber: #f5a623;
  --d-amber-soft: rgba(245,166,35,.12);
  --d-red: #ef4444;
  --d-red-soft: rgba(239,68,68,.12);
  --d-radius: 10px;
  --d-max: 1400px;
  --d-font: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Helvetica, Arial, sans-serif;
  --d-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body.docs-body{
  margin:0;background:var(--d-bg);color:var(--d-text);
  font-family:var(--d-font);line-height:1.6;-webkit-font-smoothing:antialiased;
}
.docs-body img,.docs-body svg{display:block;max-width:100%;}
.docs-body a{color:inherit;text-decoration:none;}
.docs-body ul,.docs-body ol{margin:0;padding:0;}
.docs-body h1,.docs-body h2,.docs-body h3,.docs-body h4{margin:0;line-height:1.25;letter-spacing:-0.01em;font-weight:700;color:var(--d-text);}
.docs-body p{margin:0;color:var(--d-text-muted);}
.docs-body code{font-family:var(--d-mono);font-size:.92em;background:var(--d-bg-3);border:1px solid var(--d-border);padding:1px 6px;border-radius:5px;color:#ffb4bd;}

/* ---------- Top bar ---------- */
.docs-topbar{
  position:sticky;top:0;z-index:60;height:56px;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;background:rgba(10,11,14,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--d-border);
}
.docs-topbar-left{display:flex;align-items:center;gap:12px;}
.docs-menu-btn{
  display:none;width:34px;height:34px;border-radius:8px;border:1px solid var(--d-border);
  background:var(--d-bg-2);align-items:center;justify-content:center;cursor:pointer;flex:none;
}
.docs-menu-btn span{display:block;width:16px;height:1.4px;background:var(--d-text);position:relative;}
.docs-menu-btn span::before,.docs-menu-btn span::after{content:"";position:absolute;left:0;width:16px;height:1.4px;background:var(--d-text);}
.docs-menu-btn span::before{top:-5px;}
.docs-menu-btn span::after{top:5px;}
.docs-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:15px;letter-spacing:-0.01em;}
.docs-brand .dot{width:9px;height:9px;border-radius:2px;background:var(--d-accent);transform:rotate(45deg);flex:none;}
.docs-brand .maker{font-size:11px;font-weight:600;color:var(--d-text-faint);padding-left:9px;border-left:1px solid var(--d-border);margin-left:2px;}
.docs-topbar-right{display:flex;align-items:center;gap:16px;font-size:13px;}
.docs-topbar-right a{color:var(--d-text-muted);font-weight:600;transition:color .15s;}
.docs-topbar-right a:hover{color:var(--d-text);}
.docs-topbar-right .docs-cta{
  color:#fff;background:var(--d-accent);padding:8px 14px;border-radius:7px;font-weight:700;font-size:12.5px;
}
.docs-topbar-right .docs-cta:hover{background:#c00e26;}

/* ---------- Shell layout ---------- */
.docs-shell{
  max-width:var(--d-max);margin:0 auto;
  display:grid;grid-template-columns:252px minmax(0,1fr) 216px;
  gap:0;align-items:start;
}

/* ---------- Sidebar ---------- */
.docs-sidebar{
  position:sticky;top:56px;height:calc(100vh - 56px);overflow-y:auto;
  padding:26px 18px 60px;border-right:1px solid var(--d-border);
}
.docs-sidebar::-webkit-scrollbar{width:6px;}
.docs-sidebar::-webkit-scrollbar-thumb{background:var(--d-border-strong);border-radius:3px;}
.docs-nav-label{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--d-text-faint);padding:0 10px;margin-bottom:8px;display:block;}
.docs-nav{display:flex;flex-direction:column;gap:1px;margin-bottom:22px;}
.docs-nav a{
  display:flex;align-items:center;gap:9px;padding:8px 10px;border-radius:7px;
  font-size:13.5px;font-weight:600;color:var(--d-text-muted);border-left:2px solid transparent;
  transition:background .12s,color .12s,border-color .12s;
}
.docs-nav a .n{
  flex:none;width:18px;height:18px;border-radius:5px;background:var(--d-bg-3);border:1px solid var(--d-border);
  display:flex;align-items:center;justify-content:center;font-size:9.5px;font-weight:800;color:var(--d-text-faint);
}
.docs-nav a:hover{background:var(--d-bg-2);color:var(--d-text);}
.docs-nav a.active{background:var(--d-accent-soft);color:#fff;border-left-color:var(--d-accent);}
.docs-nav a.active .n{background:var(--d-accent);border-color:var(--d-accent);color:#fff;}

/* ---------- Main content ---------- */
.docs-main{padding:40px 48px 120px;min-width:0;}
.docs-intro{padding-bottom:28px;margin-bottom:36px;border-bottom:1px solid var(--d-border);}
.docs-intro .kicker{font-size:11.5px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--d-accent);}
.docs-intro h1{font-size:32px;margin-top:12px;}
.docs-intro p{margin-top:12px;font-size:15.5px;max-width:680px;}

.doc-section{padding-top:46px;margin-top:-16px;border-top:1px solid var(--d-border);}
.doc-section:first-of-type{border-top:none;padding-top:0;}
.doc-section-head{display:flex;align-items:baseline;gap:12px;margin-bottom:18px;}
.doc-section-head .num{font-family:var(--d-mono);font-size:13px;font-weight:700;color:var(--d-text-faint);}
.doc-section-head h2{font-size:22px;}
.doc-section > p.lead{font-size:15px;margin-bottom:18px;max-width:700px;}
.doc-section h3{font-size:15.5px;margin:26px 0 10px;color:var(--d-text);}
.doc-section h3:first-of-type{margin-top:20px;}
.doc-section p{font-size:14.3px;margin-top:10px;max-width:720px;}
.doc-section p:first-child{margin-top:0;}

/* ---------- Cards ---------- */
.doc-card{
  border:1px solid var(--d-border);background:var(--d-bg-2);border-radius:var(--d-radius);
  padding:16px 18px;margin:16px 0;
}
.doc-card-row{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:16px 0;}
.doc-card-row.cols-3{grid-template-columns:repeat(3,1fr);}
.doc-card-row.cols-4{grid-template-columns:repeat(4,1fr);}
.doc-def{border:1px solid var(--d-border);background:var(--d-bg-2);border-radius:var(--d-radius);padding:15px 16px;}
.doc-def h4{font-size:13.5px;font-weight:700;color:var(--d-text);margin-bottom:6px;}
.doc-def p{font-size:13px;margin-top:0;color:var(--d-text-muted);}

.doc-callout{
  display:flex;gap:12px;border-radius:var(--d-radius);padding:14px 16px;margin:18px 0;
  border:1px solid var(--d-border);background:var(--d-bg-2);
}
.doc-callout .ic{flex:none;width:22px;height:22px;border-radius:6px;display:flex;align-items:center;justify-content:center;margin-top:1px;}
.doc-callout p{font-size:13.5px;margin:0;color:var(--d-text-muted);}
.doc-callout strong{color:var(--d-text);}
.doc-callout.info{border-color:var(--d-border-strong);}
.doc-callout.info .ic{background:var(--d-bg-3);color:var(--d-text-muted);}
.doc-callout.warning{border-color:rgba(245,166,35,.35);background:var(--d-amber-soft);}
.doc-callout.warning .ic{background:rgba(245,166,35,.25);color:var(--d-amber);}
.doc-callout.rule{border-color:var(--d-accent-border);background:var(--d-accent-soft);}
.doc-callout.rule .ic{background:rgba(224,16,42,.3);color:#ff5c72;}
.doc-callout.danger{border-color:rgba(239,68,68,.35);background:var(--d-red-soft);}
.doc-callout.danger .ic{background:rgba(239,68,68,.25);color:var(--d-red);}

/* ---------- Checklist / steps ---------- */
.doc-checklist{display:flex;flex-direction:column;gap:10px;margin:16px 0;}
.doc-checklist li{display:flex;align-items:flex-start;gap:10px;list-style:none;font-size:14px;color:var(--d-text);}
.doc-checklist li .box{
  flex:none;width:16px;height:16px;border-radius:4px;border:1.5px solid var(--d-border-strong);margin-top:2px;
}
.doc-steps{display:flex;flex-direction:column;gap:0;margin:18px 0;counter-reset:step;}
.doc-steps li{
  list-style:none;position:relative;padding:0 0 22px 34px;counter-increment:step;
}
.doc-steps li::before{
  content:counter(step);position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;
  background:var(--d-bg-3);border:1px solid var(--d-border-strong);color:var(--d-text);
  font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.doc-steps li::after{
  content:"";position:absolute;left:11px;top:22px;bottom:0;width:1px;background:var(--d-border);
}
.doc-steps li:last-child::after{display:none;}
.doc-steps li b{display:block;font-size:14px;color:var(--d-text);margin-bottom:3px;}
.doc-steps li span{font-size:13.3px;color:var(--d-text-muted);}

/* ---------- Table ---------- */
.doc-table-wrap{overflow-x:auto;margin:18px 0;border:1px solid var(--d-border);border-radius:var(--d-radius);}
table.doc-table{width:100%;border-collapse:collapse;font-size:13.3px;}
table.doc-table th{
  text-align:left;background:var(--d-bg-3);color:var(--d-text-faint);font-size:11px;font-weight:800;
  letter-spacing:.05em;text-transform:uppercase;padding:10px 14px;border-bottom:1px solid var(--d-border);
}
table.doc-table td{padding:11px 14px;border-bottom:1px solid var(--d-border);color:var(--d-text-muted);}
table.doc-table tr:last-child td{border-bottom:none;}
table.doc-table td.strong{color:var(--d-text);font-weight:700;}
.doc-tag{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:800;padding:3px 8px;border-radius:999px;}
.doc-tag.ok{background:var(--d-green-soft);color:var(--d-green);}
.doc-tag.no{background:var(--d-red-soft);color:var(--d-red);}

/* ---------- Example / verdict cards ---------- */
.doc-example{border:1px solid var(--d-border);border-radius:var(--d-radius);background:var(--d-bg-2);padding:18px 20px;margin:16px 0;}
.doc-example .ex-label{font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--d-text-faint);margin-bottom:12px;}
.verdict-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0;}
.verdict-card{border-radius:var(--d-radius);padding:18px 20px;border:1px solid;}
.verdict-card.ok{border-color:rgba(34,197,94,.35);background:var(--d-green-soft);}
.verdict-card.no{border-color:rgba(239,68,68,.35);background:var(--d-red-soft);}
.verdict-row{display:flex;justify-content:space-between;align-items:center;font-family:var(--d-mono);font-size:13px;color:var(--d-text-muted);padding:5px 0;}
.verdict-row b{color:var(--d-text);font-weight:700;}
.verdict-compare{
  font-family:var(--d-mono);font-size:14px;text-align:center;margin:12px 0;padding:10px 0;
  border-top:1px dashed var(--d-border-strong);border-bottom:1px dashed var(--d-border-strong);color:var(--d-text);
}
.verdict-result{display:flex;align-items:center;gap:8px;margin-top:12px;font-weight:800;font-size:13.5px;}
.verdict-card.ok .verdict-result{color:var(--d-green);}
.verdict-card.no .verdict-result{color:var(--d-red);}

/* ---------- Workflow diagrams ---------- */
.doc-flow-h{display:flex;align-items:center;flex-wrap:wrap;gap:0;margin:22px 0;}
.doc-flow-h .fh-step{
  display:flex;align-items:center;gap:9px;background:var(--d-bg-2);border:1px solid var(--d-border);
  border-radius:999px;padding:9px 16px;font-size:12.5px;font-weight:700;color:var(--d-text);white-space:nowrap;
}
.doc-flow-h .fh-arrow{margin:0 10px;color:var(--d-text-faint);font-size:14px;flex:none;}

.doc-flow-v{display:flex;flex-direction:column;margin:20px 0;max-width:460px;}
.doc-flow-v .fv-step{
  border:1px solid var(--d-border);background:var(--d-bg-2);border-radius:var(--d-radius);
  padding:12px 16px;font-size:13.5px;font-weight:700;color:var(--d-text);position:relative;
}
.doc-flow-v .fv-arrow{align-self:center;color:var(--d-text-faint);font-size:15px;padding:6px 0;}

/* master workflow (section 14) */
.master-flow{display:flex;flex-direction:column;gap:0;margin:26px 0;counter-reset:mstep;max-width:520px;}
.master-flow .mf-item{
  list-style:none;counter-increment:mstep;position:relative;padding:0 0 30px 40px;
}
.master-flow .mf-item::before{
  content:counter(mstep);position:absolute;left:0;top:0;width:26px;height:26px;border-radius:50%;
  background:var(--d-accent-soft);border:1px solid var(--d-accent-border);color:#ff7d8d;
  font-family:var(--d-mono);font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;
}
.master-flow .mf-item::after{
  content:"";position:absolute;left:13px;top:26px;bottom:0;width:1px;
  background:repeating-linear-gradient(180deg, var(--d-border-strong) 0 5px, transparent 5px 10px);
}
.master-flow .mf-item:last-child::after{display:none;}
.master-flow .mf-item b{display:block;font-size:14.5px;color:var(--d-text);letter-spacing:.01em;}
.master-flow .mf-item span{font-size:12.5px;color:var(--d-text-muted);display:block;margin-top:2px;}

/* ---------- Entry/SL/Target conceptual diagram ---------- */
.trade-diagram{
  display:flex;flex-direction:column;border:1px solid var(--d-border);border-radius:var(--d-radius);
  overflow:hidden;margin:20px 0;max-width:420px;
}
.trade-diagram .td-row{
  display:flex;align-items:center;justify-content:space-between;padding:12px 16px;
  border-bottom:1px solid var(--d-border);font-family:var(--d-mono);font-size:12.8px;
}
.trade-diagram .td-row:last-child{border-bottom:none;}
.trade-diagram .td-row .lbl{font-weight:800;letter-spacing:.03em;}
.trade-diagram .td-row.t3{background:rgba(34,197,94,.10);color:#4ade80;}
.trade-diagram .td-row.t2{background:rgba(34,197,94,.07);color:#4ade80;}
.trade-diagram .td-row.t1{background:rgba(34,197,94,.05);color:#4ade80;}
.trade-diagram .td-row.entry{background:var(--d-bg-3);color:var(--d-text);}
.trade-diagram .td-row.sl{background:rgba(239,68,68,.10);color:#f87171;}

/* ---------- Glossary ---------- */
.doc-glossary{margin:18px 0;}
.doc-glossary dt{font-family:var(--d-mono);font-size:13px;font-weight:700;color:var(--d-text);margin-top:12px;}
.doc-glossary dd{margin:4px 0 0;font-size:13.3px;color:var(--d-text-muted);}

/* ---------- Tutorial videos ---------- */
.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0 0;}
.video-card{background:var(--d-bg-2);border:1px solid var(--d-border);border-radius:var(--d-radius);overflow:hidden;}
.video-card .vh{padding:12px 14px;font-size:13px;font-weight:800;color:var(--d-text);border-bottom:1px solid var(--d-border);display:flex;align-items:center;justify-content:space-between;gap:10px;}
.video-ext{font-size:10.5px;font-weight:700;color:var(--d-text-faint);text-decoration:none;border:1px solid var(--d-border);padding:3px 9px;border-radius:20px;white-space:nowrap;transition:color .15s ease,border-color .15s ease;}
.video-ext:hover{color:var(--d-accent);border-color:var(--d-accent);}
.video-frame{position:relative;width:100%;padding-top:56.25%;background:#000;cursor:pointer;}
.video-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block;}
.video-frame .video-thumb-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;transition:filter .2s ease,transform .3s ease;}
.video-frame:hover .video-thumb-img{filter:brightness(.6);transform:scale(1.03);}
.video-play{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:64px;height:64px;border-radius:50%;background:rgba(224,16,42,.92);display:flex;align-items:center;justify-content:center;box-shadow:0 0 0 8px rgba(224,16,42,.14);transition:transform .2s ease,background .2s ease;pointer-events:none;}
.video-frame:hover .video-play{transform:translate(-50%,-50%) scale(1.08);background:var(--d-accent);}
.video-play svg{width:22px;height:22px;fill:#fff;margin-left:3px;}
.video-fallback{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:var(--d-bg-2);text-align:center;padding:0 20px;}
.video-fallback .vf-icon{width:34px;height:34px;fill:var(--d-text-faint);}
.video-fallback p{margin:0;font-size:12px;color:var(--d-text-faint);}
.video-fallback a{font-size:13px;font-weight:800;color:var(--d-accent);text-decoration:none;border:1px solid var(--d-accent);padding:7px 16px;border-radius:20px;transition:background .15s ease,color .15s ease;}
.video-fallback a:hover{background:var(--d-accent);color:#fff;}
.video-frame > div[id^="yt-mount-"]{position:absolute;inset:0;width:100%;height:100%;}
.video-frame > div[id^="yt-mount-"] iframe{position:absolute;inset:0;width:100%;height:100%;border:0;}
@media(max-width:700px){
  .video-grid{grid-template-columns:1fr;}
}

/* ---------- Demo SVG visuals ---------- */
.doc-visual{
  background:var(--d-bg-2);border:1px solid var(--d-border);border-radius:var(--d-radius);
  padding:14px 16px;margin:16px 0;max-width:520px;
}
.doc-visual svg{width:100%;height:auto;display:block;}
.doc-visual .cap{margin-top:10px;font-size:11.5px;color:var(--d-text-faint);text-align:center;}
.doc-visual-row{display:flex;gap:14px;flex-wrap:wrap;}
.doc-visual-row .doc-visual{flex:1;min-width:200px;}
@keyframes docPing{0%{transform:scale(.6);opacity:.5;}75%{transform:scale(1.9);opacity:0;}100%{opacity:0;}}
.doc-ping{transform-box:fill-box;transform-origin:center;animation:docPing 2.2s ease-out infinite;}

/* ---------- Compact term grid + icon pills (simple/graphical mode) ---------- */
.term-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:16px 0;}
.term-chip{display:flex;align-items:baseline;gap:7px;border:1px solid var(--d-border);background:var(--d-bg-2);border-radius:8px;padding:9px 12px;font-size:12.5px;}
.term-chip b{color:var(--d-text);font-family:var(--d-mono);font-size:11.5px;flex:none;}
.term-chip span{color:var(--d-text-muted);}
.icon-row{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0;}
.icon-pill{display:flex;align-items:center;gap:8px;border:1px solid var(--d-border);background:var(--d-bg-2);border-radius:999px;padding:9px 15px;font-size:12.5px;font-weight:700;color:var(--d-text);}
.icon-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--d-accent);flex:none;}
.doc-section p.short{font-size:14.5px;color:var(--d-text-muted);max-width:640px;}

/* ---------- On this page (right rail) ---------- */
.docs-toc{position:sticky;top:56px;height:calc(100vh - 56px);overflow-y:auto;padding:34px 16px 60px 20px;}
.docs-toc .toc-label{font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--d-text-faint);margin-bottom:12px;display:block;}
.docs-toc a{display:block;font-size:12.5px;color:var(--d-text-muted);padding:5px 0;border-left:2px solid transparent;padding-left:10px;transition:color .12s,border-color .12s;}
.docs-toc a:hover{color:var(--d-text);}
.docs-toc a.active{color:var(--d-accent);border-left-color:var(--d-accent);font-weight:700;}

/* ---------- Prev/Next footer nav ---------- */
.docs-pagenav{display:flex;justify-content:space-between;gap:16px;margin-top:56px;padding-top:26px;border-top:1px solid var(--d-border);}
.docs-pagenav a{
  flex:1;border:1px solid var(--d-border);border-radius:var(--d-radius);padding:14px 16px;background:var(--d-bg-2);
  transition:border-color .15s,background .15s;
}
.docs-pagenav a:hover{border-color:var(--d-border-strong);background:var(--d-bg-3);}
.docs-pagenav a.next{text-align:right;}
.docs-pagenav .pn-dir{font-size:10.5px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--d-text-faint);display:block;margin-bottom:4px;}
.docs-pagenav .pn-title{font-size:13.5px;font-weight:700;color:var(--d-text);}

/* ---------- Mobile drawer for sidebar ---------- */
.docs-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:opacity .25s;z-index:70;}
.docs-backdrop.open{opacity:1;pointer-events:auto;}
@media(max-width:1200px){
  .docs-shell{grid-template-columns:252px minmax(0,1fr);}
  .docs-toc{display:none;}
}
@media(max-width:900px){
  .docs-menu-btn{display:flex;}
  .docs-shell{grid-template-columns:1fr;}
  .docs-sidebar{
    position:fixed;top:0;left:0;bottom:0;height:100vh;width:min(84vw,300px);
    background:var(--d-bg-1);z-index:71;transform:translateX(-100%);transition:transform .3s cubic-bezier(.4,0,.2,1);
    border-right:1px solid var(--d-border);padding-top:70px;
  }
  .docs-sidebar.open{transform:translateX(0);}
  .docs-main{padding:32px 20px 90px;}
  .doc-card-row{grid-template-columns:1fr;}
  .doc-card-row.cols-3,.doc-card-row.cols-4{grid-template-columns:1fr 1fr;}
  .verdict-grid{grid-template-columns:1fr;}
  .term-grid{grid-template-columns:1fr;}
}
@media(max-width:560px){
  .docs-intro h1{font-size:26px;}
  .doc-section-head h2{font-size:19px;}
  .doc-card-row.cols-3,.doc-card-row.cols-4{grid-template-columns:1fr;}
  .docs-pagenav{flex-direction:column;}
  .docs-topbar-right a:not(.docs-cta){display:none;}
}