/* Artist Handbook — extends Studio Noir site identity */

:root {
  --hb-max: 1180px;
  --hb-sidebar: 260px;
  --gold: var(--teal);
}

.hb-layout {
  width: min(100% - 2rem, var(--hb-max));
  margin: 0 auto;
  display: grid;
  grid-template-columns: var(--hb-sidebar) minmax(0, 1fr);
  gap: 2rem;
  padding: 1.5rem 0 4rem;
  align-items: start;
}

.hb-sidebar {
  position: sticky;
  top: 4.5rem;
  max-height: calc(100vh - 5rem);
  overflow: auto;
  padding-right: 0.5rem;
}

.hb-sidebar-label {
  font-family: 'Oswald', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--bone-dim);
  margin: 1.25rem 0 0.5rem;
}

.hb-sidebar-label:first-child {
  margin-top: 0;
}

.hb-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.hb-nav-list a {
  display: block;
  padding: 0.4rem 0.55rem;
  border-radius: 8px;
  color: var(--bone-muted);
  font-size: 0.88rem;
  line-height: 1.35;
  text-decoration: none;
}

.hb-nav-list a:hover {
  color: var(--bone);
  background: rgba(46, 196, 182, 0.08);
  text-decoration: none;
}

.hb-nav-list a[aria-current='page'] {
  color: var(--ink-black);
  background: linear-gradient(135deg, var(--teal), var(--teal-dim));
  font-weight: 600;
}

.hb-search {
  margin-bottom: 1rem;
}

.hb-search input {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius);
  border: 1px solid var(--ink-border);
  background: var(--ink-slate);
  color: var(--bone);
  font: inherit;
  font-size: 0.9rem;
}

.hb-search input:focus {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.hb-search-results {
  margin-top: 0.5rem;
  display: none;
  border: 1px solid var(--ink-border);
  border-radius: var(--radius);
  background: var(--ink-charcoal);
  overflow: hidden;
}

.hb-search-results.visible {
  display: block;
}

.hb-search-results a {
  display: block;
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--ink-border);
  color: var(--bone);
  text-decoration: none;
}

.hb-search-results a:last-child {
  border-bottom: none;
}

.hb-search-results a:hover {
  background: rgba(46, 196, 182, 0.08);
}

.hb-search-results .meta {
  display: block;
  font-size: 0.75rem;
  color: var(--bone-dim);
  margin-top: 0.2rem;
}

.hb-article {
  min-width: 0;
}

.hb-crumb {
  font-size: 0.8rem;
  color: var(--bone-dim);
  margin-bottom: 1rem;
}

.hb-crumb a {
  color: var(--bone-muted);
}

.hb-eyebrow {
  font-family: 'Oswald', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--teal);
  margin: 0 0 0.65rem;
}

.hb-article h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  line-height: 1.2;
  margin: 0 0 0.85rem;
}

.hb-lead {
  font-size: 1.05rem;
  color: var(--bone-muted);
  max-width: 62ch;
  margin: 0 0 2rem;
  line-height: 1.65;
}

.hb-prose {
  max-width: 68ch;
}

.hb-prose h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.35rem;
  margin: 2.25rem 0 0.75rem;
}

.hb-prose h3 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--bone);
}

.hb-prose p,
.hb-prose li {
  color: var(--bone-muted);
  line-height: 1.7;
}

.hb-prose p {
  margin: 0 0 1rem;
}

.hb-prose ul,
.hb-prose ol {
  margin: 0 0 1.25rem;
  padding-left: 1.2rem;
}

.hb-prose strong {
  color: var(--bone);
  font-weight: 600;
}

.hb-prose a {
  color: var(--teal);
}

.hb-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.35rem;
  align-items: center;
  margin: 1.25rem 0 1.75rem;
}

.hb-flow span {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid var(--ink-border);
  background: var(--ink-charcoal);
  color: var(--bone);
  font-size: 0.82rem;
}

.hb-flow .arrow {
  color: var(--teal);
  border: none;
  background: transparent;
  padding: 0 0.1rem;
}

.hb-callout {
  border: 1px solid var(--ink-border);
  border-left: 3px solid var(--teal);
  background: var(--ink-charcoal);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin: 1.5rem 0;
}

.hb-callout p {
  margin: 0;
  color: var(--bone-muted);
}

.hb-video {
  margin: 1.75rem 0;
  border: 1px dashed var(--ink-border);
  border-radius: var(--radius);
  background: rgba(15, 22, 40, 0.8);
  padding: 2rem 1.25rem;
  text-align: center;
  color: var(--bone-dim);
  font-size: 0.9rem;
}

.hb-video strong {
  display: block;
  color: var(--bone-muted);
  margin-bottom: 0.35rem;
}

.hb-related,
.hb-feedback {
  margin-top: 3rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--ink-border);
}

.hb-related h2,
.hb-feedback h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.25rem;
  margin: 0 0 1rem;
}

.hb-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.85rem;
}

.hb-related-card {
  display: block;
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--ink-border);
  background: var(--ink-charcoal);
  text-decoration: none;
  color: var(--bone);
}

.hb-related-card:hover {
  border-color: var(--teal-dim);
  text-decoration: none;
}

.hb-related-card .cat {
  display: block;
  font-family: 'Oswald', sans-serif;
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.4rem;
}

.hb-related-card p {
  margin: 0.4rem 0 0;
  font-size: 0.85rem;
  color: var(--bone-muted);
}

.hb-feedback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.hb-feedback-actions button {
  min-width: 3.25rem;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--ink-border);
  background: var(--ink-slate);
  color: var(--bone);
  font-size: 1.1rem;
  cursor: pointer;
}

.hb-feedback-actions button:hover,
.hb-feedback-actions button[aria-pressed='true'] {
  border-color: var(--teal);
  background: rgba(46, 196, 182, 0.12);
}

.hb-feedback-note {
  font-size: 0.9rem;
  color: var(--bone-muted);
  margin: 0;
}

.hb-home-hero {
  padding: 3rem 0 1rem;
  text-align: left;
}

.hb-home-hero h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: clamp(2rem, 5vw, 3rem);
  margin: 0 0 0.75rem;
  max-width: 16ch;
}

.hb-home-hero .byline {
  font-family: 'Oswald', sans-serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.78rem;
  color: var(--teal);
  margin: 0 0 1.5rem;
}

.hb-quick-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.85rem;
  margin: 1.5rem 0 2.5rem;
}

.hb-quick-card {
  display: block;
  padding: 1.15rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid var(--ink-border);
  background: linear-gradient(160deg, var(--ink-charcoal), var(--ink-slate));
  text-decoration: none;
  color: var(--bone);
  min-height: 7.5rem;
}

.hb-quick-card:hover {
  border-color: var(--teal-dim);
  text-decoration: none;
}

.hb-quick-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.hb-quick-card p {
  margin: 0;
  color: var(--bone-muted);
  font-size: 0.88rem;
}

.hb-section-index {
  margin: 2rem 0;
}

.hb-section-index h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.35rem;
  margin: 0 0 0.85rem;
}

.hb-section-list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  border: 1px solid var(--ink-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.hb-section-list a {
  display: block;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--ink-border);
  color: var(--bone);
  text-decoration: none;
}

.hb-section-list li:last-child a {
  border-bottom: none;
}

.hb-section-list a:hover {
  background: rgba(46, 196, 182, 0.06);
  text-decoration: none;
}

.hb-section-list .desc {
  display: block;
  color: var(--bone-muted);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.hb-faq details {
  border: 1px solid var(--ink-border);
  border-radius: var(--radius);
  background: var(--ink-charcoal);
  margin-bottom: 0.65rem;
  padding: 0.85rem 1rem;
}

.hb-faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--bone);
  list-style: none;
}

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

.hb-faq summary::after {
  content: '+';
  float: right;
  color: var(--teal);
  font-weight: 500;
}

.hb-faq details[open] summary::after {
  content: '–';
}

.hb-faq .answer {
  margin-top: 0.75rem;
  color: var(--bone-muted);
  line-height: 1.65;
}

.hb-roadmap-grid {
  display: grid;
  gap: 1rem;
}

.hb-roadmap-card {
  border: 1px solid var(--ink-border);
  border-radius: var(--radius);
  background: var(--ink-charcoal);
  padding: 1.15rem 1.25rem;
}

.hb-roadmap-card h3 {
  margin: 0 0 0.65rem;
  font-size: 1rem;
  color: var(--teal);
  font-family: 'Oswald', sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hb-roadmap-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--bone-muted);
}

.hb-release {
  border: 1px solid var(--ink-border);
  border-radius: var(--radius);
  background: var(--ink-charcoal);
  padding: 1.15rem 1.25rem;
  margin-bottom: 1rem;
}

.hb-release h3 {
  margin: 0 0 0.35rem;
}

.hb-release .when {
  font-size: 0.8rem;
  color: var(--bone-dim);
  margin-bottom: 0.85rem;
}

.hb-release h4 {
  margin: 0.85rem 0 0.35rem;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  font-family: 'Oswald', sans-serif;
}

.nav a[aria-current='page'] {
  color: var(--bone);
}

.site-header .nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--ink-border);
  color: var(--bone);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

@media (max-width: 900px) {
  .hb-layout {
    grid-template-columns: 1fr;
  }

  .hb-sidebar {
    position: static;
    max-height: none;
    border: 1px solid var(--ink-border);
    border-radius: var(--radius);
    background: var(--ink-charcoal);
    padding: 1rem;
  }
}

@media (max-width: 640px) {
  .site-header .nav-toggle {
    display: inline-flex;
  }

  .site-header .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    padding-bottom: 0.5rem;
  }

  .site-header.nav-open .nav {
    display: flex;
  }

  .header-inner {
    flex-wrap: wrap;
  }
}