/* Black Rock — Kratom Lab Conversion documentation site */

@import url("shared-brand.css");

:root {
  --content-max: 1120px;
  --prose-max: 48rem;
  --section-pad: clamp(2.5rem, 6vw, 4rem);
  --radius-card: 14px;
  --radius-pill: 999px;
  --shadow-card: 0 4px 24px rgba(26, 26, 31, 0.08);
  --header-h: 72px;
  --focus-ring: 0 0 0 3px rgba(201, 162, 39, 0.45);
  --sidebar-w: 260px;
  --pt-up: 1pt;
  --font-eyebrow: calc(0.75rem + var(--pt-up));
  --font-lead: clamp(calc(1.05rem + var(--pt-up)), 2vw, calc(1.2rem + var(--pt-up)));
  --font-sub: calc(0.95rem + var(--pt-up));
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--br-text);
  background: var(--br-paper);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
.container { width: min(100% - 2.5rem, var(--content-max)); margin-inline: auto; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  padding: 0.75rem 1.25rem; background: var(--br-gold-500); color: var(--br-charcoal-900);
  font-weight: 600; text-decoration: none; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; outline: none; box-shadow: var(--focus-ring); }

.eyebrow {
  font-size: var(--font-eyebrow); font-weight: 600; letter-spacing: 0.2em;
  text-transform: uppercase; color: var(--br-sage-400); margin-bottom: 1rem;
}
.section--dark .eyebrow, .section--hero .eyebrow { color: var(--br-gold-500); }

.display-title {
  font-family: var(--font-display); font-weight: 500; line-height: 1.08; color: var(--br-charcoal-900);
}
.section--dark .display-title, .section--hero .display-title { color: var(--br-white); }

.lead {
  font-size: var(--font-lead); color: var(--br-text-muted); max-width: var(--prose-max); line-height: 1.6;
}
.section--dark .lead, .section--hero .lead { color: var(--br-silver-300); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.95rem 1.85rem; border-radius: var(--radius-pill);
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 600;
  letter-spacing: 0.03em; text-decoration: none; border: 2px solid transparent; cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.btn:focus-visible { outline: none; box-shadow: var(--focus-ring); }
.btn--primary { background: var(--br-gold-500); color: var(--br-charcoal-900); }
.btn--primary:hover { background: var(--br-gold-600); }
.btn--ghost {
  background: transparent; color: var(--br-white); border-color: rgba(255, 255, 255, 0.35);
}
.btn--ghost:hover { border-color: var(--br-gold-500); color: var(--br-gold-500); }
.btn--ghost-dark {
  background: transparent; color: var(--br-charcoal-900); border-color: var(--br-rule);
}
.btn--ghost-dark:hover { border-color: var(--br-gold-500); color: var(--br-gold-600); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100; height: var(--header-h);
  background: rgba(26, 26, 31, 0.94); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--br-rule-dark);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between; height: 100%; gap: 1.5rem;
}
.logo {
  font-family: var(--font-display); font-size: 1.15rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--br-white); text-decoration: none;
}
.nav-desktop { display: none; align-items: center; gap: 2rem; }
.nav-desktop a {
  font-size: 0.875rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--br-silver-300); text-decoration: none;
}
.nav-desktop a:hover, .nav-desktop a.is-active { color: var(--br-gold-500); }
.header-actions { display: flex; align-items: center; gap: 0.75rem; }
.site-header .btn--primary { padding: 0.5rem 1rem; font-size: 0.8rem; }
.nav-toggle {
  display: flex; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; padding: 10px; background: transparent;
  border: 1px solid var(--br-rule-dark); border-radius: 8px; cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--br-white); border-radius: 1px; }
.nav-panel {
  display: none; position: absolute; top: var(--header-h); left: 0; right: 0;
  background: var(--br-charcoal-900); border-bottom: 1px solid var(--br-rule-dark);
  padding: 1rem 1.25rem 1.5rem; flex-direction: column; gap: 0.75rem;
}
.nav-panel a { color: var(--br-silver-300); text-decoration: none; font-weight: 500; padding: 0.5rem 0; }
.nav-panel.is-open { display: flex; }
@media (min-width: 900px) {
  .nav-desktop { display: flex; }
  .nav-toggle { display: none; }
}

/* Sections */
.section { padding: var(--section-pad) 0; }
.section--hero {
  position: relative; background: var(--br-charcoal-900); color: var(--br-white);
  padding: clamp(4rem, 12vw, 6rem) 0 clamp(3rem, 8vw, 5rem); text-align: center;
}
.section--dark { background: var(--br-charcoal-900); color: var(--br-white); }
.section--cta {
  background: linear-gradient(135deg, var(--br-slate-800), var(--br-charcoal-900));
  color: var(--br-white); text-align: center;
}
.section-header { margin-bottom: 2rem; }
.section-header--center { text-align: center; }
.section-header--center .lead { margin-inline: auto; }
.section-header .display-title { font-size: clamp(2rem, 4.5vw, 2.85rem); }

.cta-row { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; margin-top: 2rem; }

/* Hub cards */
.conviction-grid {
  display: grid; gap: 1rem; margin-top: 2rem;
}
@media (min-width: 640px) { .conviction-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .conviction-grid--4 { grid-template-columns: repeat(4, 1fr); } }

.conviction-card {
  background: rgba(255, 255, 255, 0.04); border: 1px solid var(--br-rule-dark);
  border-radius: var(--radius-card); padding: 1.5rem 1.75rem;
}
.section:not(.section--dark) .conviction-card {
  background: var(--br-white); border-color: var(--br-rule); box-shadow: var(--shadow-card);
}
.conviction-num {
  display: block; font-size: var(--font-eyebrow); font-weight: 700;
  letter-spacing: 0.16em; color: var(--br-gold-500); margin-bottom: 0.5rem;
}
.conviction-card h3 {
  font-family: var(--font-display); font-size: 1.35rem; font-weight: 500;
  margin-bottom: 0.5rem; color: inherit;
}
.conviction-card p { font-size: var(--font-sub); color: var(--br-text-muted); line-height: 1.55; }
.section--dark .conviction-card p { color: var(--br-silver-300); }

.doc-grid {
  display: grid; gap: 1rem; margin-top: 2rem;
}
@media (min-width: 640px) { .doc-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .doc-grid { grid-template-columns: repeat(3, 1fr); } }

.doc-card {
  display: flex; flex-direction: column; padding: 1.5rem;
  background: var(--br-white); border: 1px solid var(--br-rule);
  border-radius: var(--radius-card); text-decoration: none; color: inherit;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}
.doc-card:hover { box-shadow: var(--shadow-card); border-color: var(--br-gold-500); }
.doc-card h3 {
  font-family: var(--font-display); font-size: 1.25rem; font-weight: 500;
  color: var(--br-charcoal-900); margin-bottom: 0.5rem;
}
.doc-card p { font-size: var(--font-sub); color: var(--br-text-muted); flex: 1; }
.doc-card .doc-card-link {
  margin-top: 1rem; font-size: 0.85rem; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--br-gold-600);
}

.bench-columns {
  display: grid; gap: 2rem; margin-top: 2rem;
}
@media (min-width: 768px) { .bench-columns { grid-template-columns: 1fr 1fr; } }
.bench-list { list-style: none; }
.bench-list li { border-bottom: 1px solid var(--br-rule); padding: 0.75rem 0; }
.bench-list a { color: var(--br-charcoal-900); font-weight: 500; text-decoration: none; }
.bench-list a:hover { color: var(--br-gold-600); }
.bench-list span { display: block; font-size: 0.85rem; color: var(--br-text-muted); margin-top: 0.25rem; }

/* Doc layout */
.doc-main { padding: 2rem 0 4rem; min-height: 60vh; }
.doc-layout {
  display: grid; gap: 2rem; align-items: start;
}
@media (min-width: 960px) {
  .doc-layout { grid-template-columns: var(--sidebar-w) 1fr; gap: 3rem; }
}

.doc-sidebar { position: relative; }
@media (min-width: 960px) {
  .doc-sidebar { position: sticky; top: calc(var(--header-h) + 1.5rem); }
}

.doc-nav-group { margin-bottom: 1.25rem; }
.doc-nav-group-title {
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--br-text-muted); margin-bottom: 0.5rem;
}
.doc-nav-list { list-style: none; }
.doc-nav-list a {
  display: block; padding: 0.35rem 0; font-size: 0.9rem; color: var(--br-text-muted);
  text-decoration: none; border-left: 2px solid transparent; padding-left: 0.75rem;
}
.doc-nav-list a:hover { color: var(--br-charcoal-900); }
.doc-nav-list a.is-active {
  color: var(--br-gold-600); font-weight: 600; border-left-color: var(--br-gold-500);
}

.doc-nav-select, .doc-nav-mobile-label { display: block; width: 100%; }
.doc-nav-mobile-label {
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--br-text-muted); margin-bottom: 0.35rem;
}
.doc-nav-select {
  padding: 0.65rem 0.75rem; border: 1px solid var(--br-rule); border-radius: 8px;
  font-family: var(--font-body); font-size: 0.95rem; background: var(--br-white);
}
@media (min-width: 960px) {
  .doc-nav-select, .doc-nav-mobile-label { display: none; }
  .doc-sidebar .doc-nav-groups { display: block; }
}
.doc-nav-groups { display: none; }

.doc-callout {
  padding: 1rem 1.25rem; margin-bottom: 2rem;
  background: rgba(201, 162, 39, 0.12); border-left: 4px solid var(--br-gold-500);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  font-size: var(--font-sub); color: var(--br-text);
}

/* Prose */
.doc-prose { max-width: var(--prose-max); }
.doc-prose > :first-child { margin-top: 0; }
.doc-prose h1 {
  font-family: var(--font-display); font-size: clamp(1.85rem, 4vw, 2.5rem);
  font-weight: 500; color: var(--br-charcoal-900); margin: 0 0 1.25rem; line-height: 1.15;
}
.doc-prose h2 {
  font-family: var(--font-display); font-size: 1.65rem; font-weight: 500;
  color: var(--br-charcoal-900); margin: 2.5rem 0 1rem; padding-top: 0.5rem;
  border-top: 1px solid var(--br-rule);
}
.doc-prose h2:first-child { border-top: none; margin-top: 0; }
.doc-prose h3 {
  font-size: 1.15rem; font-weight: 600; color: var(--br-charcoal-900); margin: 1.75rem 0 0.75rem;
}
.doc-prose p, .doc-prose li { margin-bottom: 0.85rem; color: var(--br-text); line-height: 1.65; }
.doc-prose ul, .doc-prose ol { margin: 0 0 1rem 1.25rem; }
.doc-prose a { color: var(--br-gold-600); font-weight: 500; }
.doc-prose a:hover { color: var(--br-charcoal-900); }
.doc-prose hr { border: none; border-top: 1px solid var(--br-rule); margin: 2rem 0; }
.doc-prose strong { font-weight: 600; }
.doc-prose code {
  font-family: ui-monospace, monospace; font-size: 0.88em;
  background: var(--br-paper-2); padding: 0.15em 0.4em; border-radius: 4px;
}
.doc-prose pre {
  background: var(--br-charcoal-900); color: var(--br-silver-300);
  padding: 1.25rem; border-radius: var(--radius-card); overflow-x: auto;
  margin: 1.25rem 0; font-size: 0.85rem; line-height: 1.5;
}
.doc-prose pre code { background: none; padding: 0; color: inherit; }
.doc-prose pre.mermaid { background: var(--br-white); border: 1px solid var(--br-rule); color: var(--br-text); }

.doc-table-wrap {
  margin: 1.25rem 0; overflow-x: auto; -webkit-overflow-scrolling: touch;
}
.doc-prose table, .fit-table {
  width: 100%; min-width: 32rem; border-collapse: collapse;
  border: 1px solid var(--br-rule); border-radius: var(--radius-card); overflow: hidden;
  font-size: var(--font-sub);
}
.doc-prose thead th, .fit-table thead th {
  padding: 0.85rem 1rem; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase; text-align: left;
  background: var(--br-paper-2); border-bottom: 1px solid var(--br-rule); color: var(--br-charcoal-900);
}
.doc-prose tbody td, .fit-table tbody td {
  padding: 0.85rem 1rem; vertical-align: top; border-top: 1px solid var(--br-rule);
}
.doc-prose tbody tr:nth-child(even) td { background: rgba(244, 241, 235, 0.6); }

/* Footer */
.site-footer {
  background: var(--br-charcoal-900); color: var(--br-silver-300);
  padding: 3rem 0 2rem; font-size: 0.875rem;
}
.footer-grid { display: grid; gap: 2rem; margin-bottom: 2rem; }
@media (min-width: 640px) { .footer-grid { grid-template-columns: 1.5fr 1fr; } }
.footer-brand {
  font-family: var(--font-display); font-size: 1.1rem; font-weight: 600;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--br-white); margin-bottom: 0.75rem;
}
.footer-links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a { color: var(--br-gold-500); text-decoration: none; font-weight: 500; }
.footer-links a:hover { color: var(--br-white); }
.legal {
  opacity: 0.8; line-height: 1.55; max-width: 40rem; padding-top: 1.5rem;
  border-top: 1px solid var(--br-rule-dark); font-size: 0.8rem;
}

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.5s ease, transform 0.5s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}