/* ==========================================================================
   Correlation Radar — documentation pages (Guide + Disclaimer)
   Loaded after styles.css, so it reuses the same theme tokens and top bar.
   ========================================================================== */

.brand-link {
  text-decoration: none;
  color: inherit;
}

.brand-name {
  display: block;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  font-weight: 650;
  letter-spacing: -0.01em;
  background: linear-gradient(100deg, var(--text) 20%, var(--cyan) 70%, var(--purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.doc {
  max-width: 1480px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 44px) 10px;
}

/* ------------------------------- hero ---------------------------------- */

.doc-hero {
  position: relative;
  overflow: hidden;
  margin: 12px 0 26px;
  padding: clamp(26px, 4vw, 48px);
  border-radius: 28px;
  border: 1px solid var(--border);
  background: linear-gradient(140deg, var(--card-strong), var(--card));
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
}

.doc-hero::before {
  content: "";
  position: absolute;
  inset: -40% -10% auto auto;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.2), transparent 62%);
  pointer-events: none;
}

.doc-hero::after {
  content: "";
  position: absolute;
  inset: auto auto -55% -12%;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.18), transparent 60%);
  pointer-events: none;
}

.doc-hero > * {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.35);
  background: rgba(34, 211, 238, 0.1);
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow.warm {
  border-color: rgba(245, 158, 11, 0.38);
  background: rgba(245, 158, 11, 0.1);
  color: var(--warn);
}

.doc-hero h1 {
  margin-top: 18px;
  font-size: clamp(1.9rem, 4.6vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  background: linear-gradient(100deg, var(--text) 28%, var(--cyan) 72%, var(--purple));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.doc-hero .lead {
  max-width: 72ch;
  margin-top: 16px;
  font-size: clamp(0.95rem, 1.35vw, 1.08rem);
  line-height: 1.75;
  color: var(--text-dim);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.chip-soft {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text-dim);
  font-size: 0.76rem;
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

/* ------------------------ docs sub-navigation --------------------------- */

.of-docnav {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 2px;
  margin-bottom: 16px;
  padding: 3px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--input-bg);
}

.of-docnav a {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--text-dim);
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease;
}

.of-docnav a:hover {
  color: var(--text);
}

.of-docnav a.is-active {
  color: var(--text);
  background: linear-gradient(120deg, rgba(34, 211, 238, 0.2), rgba(168, 85, 247, 0.22));
  box-shadow: inset 0 0 0 1px var(--border-strong);
}

/* ------------------------------ layout --------------------------------- */

.doc-layout {
  display: grid;
  grid-template-columns: 258px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.doc-toc {
  position: sticky;
  top: 18px;
  padding: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--card);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.doc-toc h2 {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.doc-toc ol {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 3px;
  counter-reset: toc;
}

.doc-toc li {
  counter-increment: toc;
}

.doc-toc ol a {
  display: flex;
  gap: 9px;
  padding: 7px 9px;
  border-radius: 9px;
  color: var(--text-dim);
  font-size: 0.83rem;
  line-height: 1.35;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease;
}

.doc-toc ol a::before {
  content: counter(toc, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  padding-top: 2px;
}

.doc-toc ol a:hover {
  background: var(--card-hover);
  color: var(--text);
}

.doc-toc ol a.is-active {
  background: linear-gradient(120deg, rgba(34, 211, 238, 0.16), rgba(168, 85, 247, 0.16));
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--border-strong);
}

.doc-toc .toc-foot a {
  color: var(--cyan);
  text-decoration: none;
}

.doc-toc .toc-foot a:hover {
  text-decoration: underline;
}

.doc-toc .toc-foot {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--border-strong);
  font-size: 0.74rem;
  line-height: 1.6;
  color: var(--muted);
}

.doc-body {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}

/* ------------------------------ sections -------------------------------- */

.doc-section {
  padding: clamp(20px, 2.6vw, 32px);
  border-radius: 24px;
  border: 1px solid var(--border);
  background: var(--card);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
  scroll-margin-top: 20px;
}

.doc-section h2 {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: clamp(1.18rem, 2vw, 1.45rem);
}

.sec-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  border-radius: 10px;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: #0a0e1a;
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  box-shadow: 0 8px 20px -10px rgba(34, 211, 238, 0.9);
}

.doc-section h3 {
  margin-top: 22px;
  font-size: 1rem;
  color: var(--text);
}

.doc-section p,
.doc-section li {
  color: var(--text-dim);
  line-height: 1.75;
  font-size: 0.92rem;
}

.doc-section p + p {
  margin-top: 12px;
}

.doc-section strong {
  color: var(--text);
}

.doc-section a {
  color: var(--cyan);
}

.doc-section ul,
.doc-section ol {
  margin: 12px 0 0;
  padding-left: 20px;
}

.doc-section li + li {
  margin-top: 7px;
}

.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.mini-card {
  padding: 15px 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--input-bg);
}

.mini-card .mini-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
}

.mini-card p {
  margin-top: 7px;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ------------------------------ callouts -------------------------------- */

.callout {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--border-strong);
  background: var(--input-bg);
}

.callout .callout-icon {
  flex: 0 0 auto;
  font-size: 1.05rem;
  line-height: 1.4;
}

.callout .callout-title {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text);
}

.callout p {
  margin-top: 4px;
  font-size: 0.86rem;
  line-height: 1.65;
}

.callout.info {
  border-color: rgba(34, 211, 238, 0.32);
  background: rgba(34, 211, 238, 0.08);
}

.callout.info .callout-title {
  color: var(--cyan);
}

.callout.warn {
  border-color: rgba(245, 158, 11, 0.34);
  background: rgba(245, 158, 11, 0.08);
}

.callout.warn .callout-title {
  color: var(--warn);
}

.callout.danger {
  border-color: rgba(239, 68, 68, 0.34);
  background: rgba(239, 68, 68, 0.08);
}

.callout.danger .callout-title {
  color: var(--neg);
}

.callout.good {
  border-color: rgba(34, 197, 94, 0.32);
  background: rgba(34, 197, 94, 0.08);
}

.callout.good .callout-title {
  color: var(--pos);
}

/* --------------------------- tables & code ------------------------------ */

.table-scroll {
  margin-top: 16px;
  overflow-x: auto;
  border-radius: 14px;
  border: 1px solid var(--border);
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
  min-width: 480px;
}

.doc-table th {
  padding: 10px 14px;
  text-align: left;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--input-bg);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.doc-table td {
  padding: 10px 14px;
  color: var(--text-dim);
  line-height: 1.6;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.doc-table tbody tr:last-child td {
  border-bottom: 0;
}

.doc-table tbody tr:hover td {
  background: var(--card-hover);
}

.doc-table td strong,
.doc-table td code {
  color: var(--text);
}

.doc-table .num {
  font-family: var(--mono);
  font-size: 0.82rem;
  white-space: nowrap;
}

code {
  font-family: var(--mono);
  font-size: 0.84em;
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--text);
}

.url-box {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px dashed var(--border-strong);
  background: var(--input-bg);
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

/* ------------------------------- steps ---------------------------------- */

.steps {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--input-bg);
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  background: var(--card-hover);
  border: 1px solid var(--border-strong);
}

.step h3 {
  margin: 0;
  font-size: 0.92rem;
}

.step p {
  margin-top: 5px;
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ----------------------------- demo cells ------------------------------- */

.cell-demo {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 14px;
  margin-top: 16px;
}

.demo-cell {
  min-width: 150px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  text-align: center;
}

.demo-cell .demo-r {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 700;
}

.demo-cell .demo-lag {
  margin-top: 4px;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text-dim);
}

.demo-cell.pos {
  border-color: rgba(34, 197, 94, 0.4);
  background: rgba(34, 197, 94, 0.1);
}

.demo-cell.pos .demo-r {
  color: var(--pos);
}

.demo-cell.neg {
  border-color: rgba(239, 68, 68, 0.4);
  background: rgba(239, 68, 68, 0.1);
}

.demo-cell.neg .demo-r {
  color: var(--neg);
}

.demo-cell.mute .demo-r {
  color: var(--muted);
}

.demo-note {
  align-self: center;
  max-width: 46ch;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--muted);
}

/* ------------------------------- FAQ ------------------------------------ */

.faq {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.faq details {
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--input-bg);
}

.faq summary {
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::before {
  content: "+";
  display: inline-block;
  width: 18px;
  font-family: var(--mono);
  color: var(--cyan);
}

.faq details[open] summary::before {
  content: "\2212";
}

.faq details p {
  margin-top: 8px;
  padding-left: 18px;
  font-size: 0.85rem;
  line-height: 1.7;
}

/* ----------------------------- page nav --------------------------------- */

.page-nav-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 2px;
}

.page-nav-bottom .nav-hint {
  font-size: 0.8rem;
  color: var(--muted);
}

/* ----------------------------- responsive ------------------------------- */

@media (max-width: 980px) {
  .doc-layout {
    grid-template-columns: 1fr;
  }

  .doc-toc {
    position: static;
  }

  .doc-toc ol {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  }
}

@media (max-width: 620px) {
  .doc-hero {
    border-radius: 22px;
  }

  .doc-section {
    border-radius: 20px;
  }

  .doc-toc ol {
    grid-template-columns: 1fr;
  }

  .step {
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 10px;
  }

  .step-num {
    width: 28px;
    height: 28px;
    font-size: 0.74rem;
  }
}