/* ===================== GRAVE — Docs / Legal / Whitepaper =====================
   Long-form document layout. Loads on top of style.css (shared tokens & nav).
   Dark, JetBrains Mono, sticky sidebar TOC on wide screens. */

.doc-body{
  position: relative;
  z-index: 2;
  min-height: 100svh;
}

/* ---------- Sub-nav row under the main nav ---------- */
.doc-subnav{
  border-bottom: 1px solid var(--border);
  background: rgba(6,7,6,0.6);
  backdrop-filter: blur(10px);
}
.doc-subnav-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}
.doc-subnav-inner::-webkit-scrollbar{ display: none; }
.doc-subnav a{
  flex: 0 0 auto;
  padding: 14px 14px;
  font-size: 0.82rem;
  color: var(--text-dim);
  border-bottom: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.doc-subnav a:hover{ color: var(--text); }
.doc-subnav a.active{
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ---------- Hero ---------- */
.doc-hero{
  position: relative;
  padding: 132px 0 40px;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.doc-hero .hero-glow{
  position: absolute; top: -30%; left: 50%; transform: translateX(-50%);
  width: 720px; height: 520px;
  background: radial-gradient(ellipse at center, rgba(255,255,255,0.10), transparent 62%);
  pointer-events: none; z-index: -1;
}
.doc-eyebrow{
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 0.72rem; letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--text-faint);
  padding: 7px 14px; border: 1px solid var(--border); border-radius: 999px;
  margin-bottom: 20px;
}
.doc-eyebrow .dot-live{ width: 7px; height: 7px; }
.doc-hero h1{
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.2rem);
  letter-spacing: -0.02em; line-height: 1.05;
  margin-bottom: 16px;
}
.doc-hero p.lead{
  color: var(--text-dim);
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  line-height: 1.65; max-width: 680px;
}
.doc-meta{
  display: flex; flex-wrap: wrap; gap: 10px 20px;
  margin-top: 24px;
  font-size: 0.78rem; color: var(--text-faint);
}
.doc-meta span strong{ color: var(--text-dim); font-weight: 600; }

/* ---------- Layout: sidebar + article ---------- */
.doc-shell{
  max-width: var(--container);
  margin: 0 auto;
  padding: 48px 24px 100px;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 56px;
}
.doc-shell.no-toc{ grid-template-columns: minmax(0, 1fr); max-width: 820px; }

.doc-toc{
  position: sticky; top: 96px;
  align-self: start;
  max-height: calc(100svh - 120px);
  overflow-y: auto;
  scrollbar-width: thin;
}
.doc-toc h4{
  font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--text-faint); margin-bottom: 14px; font-weight: 600;
}
.doc-toc ul{ display: flex; flex-direction: column; gap: 2px; border-left: 1px solid var(--border); }
.doc-toc a{
  display: block;
  padding: 6px 0 6px 16px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  font-size: 0.82rem; color: var(--text-faint);
  line-height: 1.35;
  transition: color .18s ease, border-color .18s ease;
}
.doc-toc a:hover{ color: var(--text-dim); }
.doc-toc a.active{ color: var(--text); border-left-color: var(--accent); }
.doc-toc a.sub{ padding-left: 28px; font-size: 0.78rem; }

/* ---------- Article prose ---------- */
.doc-article{ min-width: 0; }
.doc-article > section,
.doc-article [id]{ scroll-margin-top: 100px; }
.doc-article > section + section{
  margin-top: 52px; padding-top: 52px; border-top: 1px solid var(--border);
}

.doc-article h2{
  font-family: var(--font-display); font-weight: 700;
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  letter-spacing: -0.01em; line-height: 1.2;
  margin-bottom: 18px;
  display: flex; align-items: baseline; gap: 12px;
}
.doc-article h2 .num{
  font-size: 0.85rem; color: var(--text-faint); font-weight: 600;
  flex: 0 0 auto;
}
.doc-article h3{
  font-family: var(--font-display); font-weight: 600;
  font-size: 1.12rem; letter-spacing: -0.005em;
  margin: 34px 0 12px;
}
.doc-article h4{
  font-size: 0.95rem; font-weight: 600; color: var(--text);
  margin: 24px 0 10px;
}
.doc-article p{
  color: var(--text-dim); line-height: 1.75; font-size: 0.94rem;
  margin-bottom: 16px;
}
.doc-article a.inline{ color: var(--text); border-bottom: 1px solid var(--border-strong); }
.doc-article a.inline:hover{ border-bottom-color: var(--accent); }
.doc-article strong{ color: var(--text); font-weight: 600; }

.doc-article ul, .doc-article ol{
  margin: 0 0 18px; padding-left: 0; display: flex; flex-direction: column; gap: 9px;
}
.doc-article ul li, .doc-article ol li{
  color: var(--text-dim); line-height: 1.65; font-size: 0.92rem;
  padding-left: 26px; position: relative;
}
.doc-article ul li::before{
  content: ''; position: absolute; left: 6px; top: 0.62em;
  width: 6px; height: 6px; border-radius: 1px;
  background: var(--accent-2); transform: rotate(45deg);
}
.doc-article ol{ counter-reset: li; }
.doc-article ol li{ counter-increment: li; }
.doc-article ol li::before{
  content: counter(li,decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  font-size: 0.72rem; color: var(--text-faint); font-weight: 600;
}
.doc-article li strong{ color: var(--text); }

/* code */
.doc-article code{
  font-family: var(--font-mono);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px; font-size: 0.85em; color: #e8e8e6;
  word-break: break-word;
}
.doc-article pre{
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 20px; margin: 0 0 20px;
  overflow-x: auto; font-size: 0.82rem; line-height: 1.7;
}
.doc-article pre code{
  background: none; border: none; padding: 0; color: var(--text-dim); font-size: inherit;
}
.doc-article pre .c{ color: var(--text-faint); }   /* comment */
.doc-article pre .k{ color: #fff; font-weight: 600; } /* keyword */

/* tables */
.doc-table-wrap{ overflow-x: auto; margin: 0 0 22px; border: 1px solid var(--border); border-radius: var(--radius-sm); }
.doc-article table{ width: 100%; border-collapse: collapse; font-size: 0.85rem; min-width: 420px; }
.doc-article th, .doc-article td{
  text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--border);
  vertical-align: top;
}
.doc-article thead th{
  color: var(--text-faint); font-weight: 600; font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.1em;
  background: rgba(255,255,255,0.02);
}
.doc-article tbody tr:last-child td{ border-bottom: none; }
.doc-article td{ color: var(--text-dim); }
.doc-article td code{ white-space: nowrap; }

/* callouts */
.callout{
  display: flex; gap: 14px;
  padding: 16px 18px; margin: 0 0 22px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent-2);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.02);
}
.callout .callout-ico{ flex: 0 0 auto; color: var(--accent-2); margin-top: 2px; }
.callout p{ margin: 0; font-size: 0.88rem; color: var(--text-dim); }
.callout p strong{ color: var(--text); }
.callout.warn{ border-left-color: #d9c26a; }
.callout.warn .callout-ico{ color: #d9c26a; }
.callout.danger{ border-left-color: var(--danger); }
.callout.danger .callout-ico{ color: var(--danger); }

/* lead paragraph inside a section */
.doc-article p.section-lead{ color: var(--text); font-size: 1rem; }

/* key-value / stat row */
.doc-stats{
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px; background: var(--border);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  overflow: hidden; margin: 0 0 24px;
}
.doc-stat{ background: var(--surface); padding: 18px 18px; }
.doc-stat .v{ font-family: var(--font-display); font-size: 1.35rem; font-weight: 700; color: var(--text); }
.doc-stat .l{ font-size: 0.72rem; color: var(--text-faint); margin-top: 4px; text-transform: uppercase; letter-spacing: 0.08em; }

/* definition cards grid */
.doc-cards{ display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: 14px; margin: 0 0 24px; }
.doc-card{
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 18px 18px; background: var(--surface);
}
.doc-card h4{ margin: 0 0 8px; font-size: 0.95rem; }
.doc-card p{ margin: 0; font-size: 0.85rem; }

/* footnote / updated line */
.doc-updated{
  margin-top: 8px; font-size: 0.78rem; color: var(--text-faint);
}

/* prev / next footer nav */
.doc-pager{
  display: flex; flex-wrap: wrap; gap: 14px; margin-top: 56px;
  padding-top: 32px; border-top: 1px solid var(--border);
}
.doc-pager a{
  flex: 1 1 220px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 16px 18px; transition: border-color .2s ease, background .2s ease;
}
.doc-pager a:hover{ border-color: var(--border-strong); background: rgba(255,255,255,0.02); }
.doc-pager .dir{ font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-faint); }
.doc-pager .ttl{ display: block; margin-top: 5px; font-weight: 600; color: var(--text); }
.doc-pager a.next{ text-align: right; }

/* back-to-top */
.doc-top-link{ display: inline-block; margin-top: 6px; font-size: 0.8rem; color: var(--text-faint); }
.doc-top-link:hover{ color: var(--text-dim); }

/* ---------- Responsive ---------- */
@media (max-width: 900px){
  .doc-shell{ grid-template-columns: minmax(0,1fr); gap: 0; padding-top: 32px; }
  .doc-toc{
    position: static; max-height: none; overflow: visible;
    margin-bottom: 36px; padding-bottom: 28px; border-bottom: 1px solid var(--border);
  }
  .doc-toc ul{ flex-flow: row wrap; border-left: none; gap: 6px; }
  .doc-toc a{
    border: 1px solid var(--border); border-left: 1px solid var(--border);
    border-radius: 999px; padding: 6px 12px; margin: 0;
  }
  .doc-toc a.active{ border-color: var(--border-strong); color: var(--text); }
  .doc-toc a.sub{ display: none; }
}
@media (max-width: 640px){
  .doc-hero{ padding-top: 116px; }
  .doc-article > section + section{ margin-top: 40px; padding-top: 40px; }
}