/* Billybets CA — workshop-indigo catalog design system */

:root{
  --bg:            #1c1c1c;
  --bg-raise:      #232326;
  --bg-card:       #2e2e2e;
  --line:          #3a3a40;
  --line-soft:     #2a2a2e;
  --ink:           #f3f4f8;
  --ink-dim:       #b7b8c2;
  --ink-faint:     #85868f;
  --indigo:        #2000f0;
  --indigo-light:  #5b3bff;
  --cyan:          #22b8f0;
  --cyan-soft:     rgba(34,184,240,.14);
  --cyan-line:     rgba(34,184,240,.35);
  --amber:         #ffb020;
  --radius-lg:     18px;
  --radius-md:     12px;
  --radius-sm:     8px;
  --maxw:          1180px;
  --font: -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono: ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  line-height:1.55;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:var(--cyan); text-decoration:none; }
a:hover{ text-decoration:underline; }
ul,ol{ padding-left:1.3em; }
.tabular{ font-variant-numeric:tabular-nums; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 20px; }

/* ---------- skip link ---------- */
.skip-link{
  position:absolute; left:-999px; top:0; z-index:200;
  background:var(--indigo); color:#fff; padding:10px 16px; border-radius:0 0 8px 0;
}
.skip-link:focus{ left:0; }

/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(28,28,28,.92);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid var(--line-soft);
}
.site-header .wrap{
  display:flex; align-items:center; gap:20px;
  height:72px;
}
.brand{ display:flex; align-items:center; gap:10px; flex-shrink:0; }
.brand img{ height:38px; width:auto; }
.brand-catalog-tag{
  font:600 10px/1 var(--mono);
  letter-spacing:.08em;
  color:var(--cyan);
  background:var(--cyan-soft);
  border:1px solid var(--cyan-line);
  border-radius:4px;
  padding:3px 6px;
  text-transform:uppercase;
  white-space:nowrap;
}
.main-nav{ display:flex; gap:4px; margin-left:8px; }
.main-nav a{
  color:var(--ink-dim);
  font-size:14.5px; font-weight:600;
  padding:8px 12px; border-radius:8px;
}
.main-nav a:hover{ color:var(--ink); background:var(--bg-raise); text-decoration:none; }
.main-nav a[aria-current="page"]{ color:var(--cyan); }
.header-actions{ margin-left:auto; display:flex; align-items:center; gap:10px; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-weight:700; font-size:14.5px;
  padding:11px 20px; border-radius:999px;
  border:1px solid transparent; cursor:pointer;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--indigo),var(--indigo-light));
  color:#fff;
  box-shadow:0 6px 20px -6px rgba(32,0,240,.65);
}
.btn-primary:hover{ text-decoration:none; filter:brightness(1.08); }
.btn-ghost{
  background:transparent; color:var(--ink); border-color:var(--line);
}
.btn-ghost:hover{ text-decoration:none; border-color:var(--cyan-line); color:var(--cyan); }
.btn-block{ width:100%; }
.btn-sm{ padding:8px 14px; font-size:13px; }

.burger{
  display:none;
  width:42px; height:42px; border-radius:10px;
  border:1px solid var(--line); background:var(--bg-raise);
  align-items:center; justify-content:center;
  cursor:pointer; flex-shrink:0;
}
.burger span, .burger span::before, .burger span::after{
  content:""; display:block; width:18px; height:2px; background:var(--ink);
  position:relative; transition:transform .2s ease, opacity .2s ease;
}
.burger span::before{ position:absolute; top:-6px; }
.burger span::after{ position:absolute; top:6px; }
.burger[aria-expanded="true"] span{ background:transparent; }
.burger[aria-expanded="true"] span::before{ transform:translateY(6px) rotate(45deg); }
.burger[aria-expanded="true"] span::after{ transform:translateY(-6px) rotate(-45deg); }

.mobile-nav{
  display:none;
  position:fixed; inset:72px 0 0 0; z-index:99;
  background:var(--bg);
  padding:18px 20px 28px;
  overflow-y:auto;
}
.mobile-nav.is-open{ display:block; }
.mobile-nav a{
  display:block; padding:14px 4px; font-size:17px; font-weight:600;
  color:var(--ink); border-bottom:1px solid var(--line-soft);
}
.mobile-nav a:hover{ text-decoration:none; color:var(--cyan); }
.mobile-nav .btn{ margin-top:18px; }

@media (max-width:860px){
  .main-nav, .header-actions .btn-primary.desktop-only{ display:none; }
  .burger{ display:flex; }
  .header-actions{ margin-left:auto; }
}

/* ---------- hero ---------- */
.hero{
  position:relative;
  padding:52px 0 40px;
  background:
    radial-gradient(ellipse 900px 420px at 85% -10%, rgba(34,184,240,.16), transparent 60%),
    radial-gradient(ellipse 700px 400px at 0% 10%, rgba(32,0,240,.20), transparent 60%),
    var(--bg);
  border-bottom:1px solid var(--line-soft);
  overflow:hidden;
}
.hero-grid{
  display:grid; grid-template-columns:1.1fr .9fr; gap:36px; align-items:center;
}
.hero-kicker{
  display:inline-flex; align-items:center; gap:8px;
  font:700 11px/1 var(--mono); letter-spacing:.1em; text-transform:uppercase;
  color:var(--cyan);
  background:var(--cyan-soft); border:1px solid var(--cyan-line);
  border-radius:999px; padding:7px 12px; margin:0 0 16px;
}
.hero-kicker::before{ content:"◆"; font-size:9px; }
.hero-title{
  font-size:clamp(28px,4.4vw,44px);
  font-weight:800; line-height:1.12; letter-spacing:-.01em;
  margin:0 0 16px; color:var(--ink);
}
.hero-title em{ font-style:normal; color:var(--cyan); }
.hero-sub{
  font-size:16.5px; color:var(--ink-dim); max-width:52ch; margin:0 0 26px;
}
.hero-ctas{ display:flex; flex-wrap:wrap; gap:12px; margin-bottom:8px; }
.hero-note{ font-size:12.5px; color:var(--ink-faint); margin-top:14px; }

.hero-visual{
  position:relative; display:flex; align-items:flex-end; justify-content:center;
  min-height:280px;
}
.hero-visual img{
  max-height:340px; width:auto; margin:0 auto;
  filter:drop-shadow(0 20px 40px rgba(0,0,0,.5));
}
.hero-visual::before{
  content:""; position:absolute; inset:auto 10% 0 10%; height:70%;
  background:radial-gradient(ellipse at center, rgba(34,184,240,.22), transparent 70%);
  z-index:0;
}

/* mechanics family strip */
.family-strip{
  display:flex; gap:10px; flex-wrap:wrap; margin-top:34px;
}
.family-chip{
  display:flex; align-items:center; gap:8px;
  background:var(--bg-card); border:1px solid var(--line);
  border-radius:999px; padding:9px 14px 9px 10px;
}
.family-chip .dot{
  width:26px; height:26px; border-radius:8px; flex-shrink:0;
  background:linear-gradient(135deg,var(--indigo),var(--cyan));
  display:flex; align-items:center; justify-content:center;
  color:#fff; font-size:13px;
}
.family-chip .label{ font-size:12.5px; font-weight:700; color:var(--ink); white-space:nowrap; }
.family-chip .num{ font:600 10px/1 var(--mono); color:var(--ink-faint); }

@media (max-width:860px){
  .hero-grid{ grid-template-columns:1fr; }
  .hero-visual{ order:-1; min-height:200px; }
  .hero-visual img{ max-height:220px; }
}

/* ---------- breadcrumb ---------- */
.crumb{
  font-size:13px; color:var(--ink-faint); padding:16px 0 0;
}
.crumb a{ color:var(--ink-faint); }
.crumb a:hover{ color:var(--cyan); }
.crumb .sep{ margin:0 6px; color:var(--line); }
.crumb .current{ color:var(--ink-dim); }

/* ---------- catalog grid (index) ---------- */
.catalog{ padding:52px 0 8px; }
.catalog-head{ display:flex; align-items:baseline; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-bottom:22px; }
.catalog-eyebrow{
  font:700 11px/1 var(--mono); letter-spacing:.1em; text-transform:uppercase; color:var(--cyan); margin:0 0 8px;
}
.catalog-lede{ font-size:15px; color:var(--ink-dim); margin:0; max-width:60ch; }
.tile-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:16px;
}
.tile{
  position:relative;
  background:var(--bg-card); border:1px solid var(--line); border-radius:var(--radius-md);
  overflow:hidden; display:flex; flex-direction:column;
  transition:border-color .15s ease, transform .15s ease;
}
.tile:hover{ border-color:var(--cyan-line); transform:translateY(-3px); text-decoration:none; }
.tile-media{ position:relative; aspect-ratio:2/3; background:#111; }
.tile-media img{ width:100%; height:100%; object-fit:cover; }
.tile-num{
  position:absolute; top:8px; left:8px;
  font:700 10px/1 var(--mono); color:var(--bg);
  background:var(--cyan); border-radius:5px; padding:4px 6px;
}
.tile-body{ padding:12px 12px 14px; display:flex; flex-direction:column; gap:6px; flex:1; }
.tile-fam{ font:600 10px/1 var(--mono); letter-spacing:.05em; text-transform:uppercase; color:var(--ink-faint); }
.tile-name{ font-size:14px; font-weight:700; color:var(--ink); margin:0; line-height:1.3; }
.tile-cta{
  margin-top:auto; font-size:12.5px; font-weight:700; color:var(--cyan);
  display:flex; align-items:center; gap:5px;
}
.tile-cta::after{ content:"→"; transition:transform .15s ease; }
.tile:hover .tile-cta::after{ transform:translateX(3px); }

@media (max-width:980px){ .tile-grid{ grid-template-columns:repeat(3,1fr); } }
@media (max-width:640px){ .tile-grid{ grid-template-columns:repeat(2,1fr); gap:12px; } }

/* ---------- article / dossier ---------- */
.dossier-section{ padding:46px 0 10px; }
.dossier{
  background:var(--bg-raise);
  border:1px solid var(--line-soft);
  border-radius:var(--radius-lg);
  padding:clamp(22px,4vw,44px);
}
.dossier-tab{
  display:inline-flex; align-items:center; gap:8px;
  font:700 11px/1 var(--mono); letter-spacing:.08em; text-transform:uppercase;
  color:var(--ink-faint); margin-bottom:18px;
}
.dossier-tab .sq{ width:9px; height:9px; background:var(--cyan); border-radius:2px; }

.dossier h1{
  font-size:clamp(24px,3.4vw,34px); line-height:1.2; font-weight:800;
  margin:0 0 18px; color:var(--ink); letter-spacing:-.01em;
}
.dossier h2{
  font-size:clamp(19px,2.4vw,24px); font-weight:800; color:var(--ink);
  margin:36px 0 14px; padding-top:20px; border-top:1px solid var(--line-soft);
}
.dossier h1 + p, .dossier h2:first-of-type{ margin-top:0; padding-top:0; border-top:none; }
.dossier h3{ font-size:16.5px; font-weight:700; color:var(--cyan); margin:22px 0 8px; }
.dossier p{ color:var(--ink-dim); margin:0 0 14px; font-size:15.5px; }
.dossier ul, .dossier ol{ color:var(--ink-dim); font-size:15.5px; margin:0 0 16px; }
.dossier li{ margin-bottom:6px; }
.dossier a{ font-weight:600; }
.dossier strong{ color:var(--ink); }

/* tables — responsive per spec */
.dossier table{
  width:100%; border-collapse:collapse; table-layout:fixed;
  margin:0 0 20px; overflow-wrap:anywhere;
  background:var(--bg-card); border:1px solid var(--line); border-radius:var(--radius-sm);
  overflow:hidden;
}
.dossier th, .dossier td{
  padding:10px 12px; text-align:left; font-size:14.5px; color:var(--ink-dim);
  border-bottom:1px solid var(--line-soft); overflow-wrap:anywhere;
}
.dossier th{ color:var(--ink); font-weight:700; background:rgba(34,184,240,.08); }
.dossier tr:last-child td{ border-bottom:none; }
.table-scroll{ overflow-x:auto; margin:0 0 20px; border-radius:var(--radius-sm); }
.table-scroll table{ margin:0; min-width:420px; }

@media (max-width:560px){
  .dossier th, .dossier td{ padding:7px 8px; font-size:12.5px; }
}

/* FAQ accordion — h3 stays the heading, JS toggles a class */
.dossier .faq-item{ border-bottom:1px solid var(--line-soft); }
.dossier .faq-item:last-child{ border-bottom:none; }
.dossier .faq-item h3{
  margin:0; padding:16px 30px 16px 0; position:relative; cursor:pointer;
  font-size:15.5px;
}
.dossier .faq-item h3::after{
  content:"+"; position:absolute; right:0; top:14px;
  font:700 18px/1 var(--mono); color:var(--ink-faint);
}
.dossier .faq-item.is-open h3::after{ content:"–"; color:var(--cyan); }
.dossier .faq-item p{ display:none; padding-bottom:16px; margin:0; }
.dossier .faq-item.is-open p{ display:block; }

/* ---------- promo band ---------- */
.promo-band{
  margin:44px 0 0;
  background:linear-gradient(120deg,rgba(32,0,240,.22),rgba(34,184,240,.14));
  border:1px solid var(--cyan-line);
  border-radius:var(--radius-lg);
  padding:26px 28px;
  display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap;
}
.promo-text .promo-eyebrow{
  font:700 10.5px/1 var(--mono); letter-spacing:.08em; text-transform:uppercase; color:var(--cyan); margin:0 0 6px;
}
.promo-text p{ margin:0; font-size:15px; color:var(--ink); font-weight:600; max-width:46ch; }
.promo-text .promo-sub{ font-weight:400; color:var(--ink-dim); font-size:13px; margin-top:4px; }

/* ---------- footer ---------- */
.site-footer{
  margin-top:60px; border-top:1px solid var(--line-soft);
  background:var(--bg-raise);
  padding:44px 0 26px;
}
.footer-grid{
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:32px;
  margin-bottom:30px;
}
.footer-brand{ display:flex; align-items:center; gap:10px; margin-bottom:12px; }
.footer-brand img{ height:30px; width:auto; }
.footer-desc{ font-size:13.5px; color:var(--ink-faint); max-width:34ch; margin:0; }
.footer-col p.col-title{
  font:700 11px/1 var(--mono); letter-spacing:.08em; text-transform:uppercase;
  color:var(--ink-faint); margin:0 0 14px;
}
.footer-col a, .footer-col span{ display:block; font-size:14px; color:var(--ink-dim); margin-bottom:10px; }
.footer-col a:hover{ color:var(--cyan); }
.rg-badge{
  display:inline-flex; align-items:center; gap:8px;
  border:1px solid var(--line); border-radius:999px; padding:8px 14px; margin-top:2px;
}
.rg-badge .age{ font:800 13px/1 var(--mono); color:var(--amber); }
.rg-badge span:last-child{ font-size:12px; color:var(--ink-faint); }

.footer-legal{
  border-top:1px solid var(--line-soft); padding-top:22px;
  font-size:12.5px; color:var(--ink-faint); line-height:1.7;
}
.footer-legal p{ margin:0 0 10px; }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:10px;
  margin-top:14px; font-size:12.5px; color:var(--ink-faint);
}

@media (max-width:860px){
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:560px){
  .footer-grid{ grid-template-columns:1fr; gap:24px; }
}

/* ---------- 404 ---------- */
.error-page{
  min-height:60vh; display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; padding:80px 20px;
}
.error-page .code{ font:800 84px/1 var(--mono); color:var(--cyan); margin:0; }

/* ---------- blog ---------- */
.blog-lede-section{ padding:52px 0 8px; }
.blog-lede-section .catalog-lede{ margin-top:8px; }
.blog-grid{
  display:grid; grid-template-columns:repeat(auto-fill,minmax(270px,1fr));
  gap:20px; margin:26px 0 12px;
}
.blog-card{
  display:flex; flex-direction:column; gap:10px;
  background:var(--bg-card); border:1px solid var(--line); border-radius:var(--radius-md);
  padding:20px; text-decoration:none; transition:border-color .15s ease, transform .15s ease;
}
.blog-card:hover{ border-color:var(--cyan-line); transform:translateY(-3px); text-decoration:none; }
.blog-card-tag{
  font:600 10px/1 var(--mono); letter-spacing:.05em; text-transform:uppercase; color:var(--cyan);
}
.blog-card-title{ font-size:16.5px; font-weight:700; color:var(--ink); margin:0; line-height:1.35; }
.blog-card-excerpt{ font-size:13.5px; color:var(--ink-dim); margin:0; flex:1; }
.blog-card-meta{ display:flex; align-items:center; justify-content:space-between; font-size:12px; color:var(--ink-faint); gap:10px; }
.blog-card-meta time{ font:600 11px/1 var(--mono); }
.blog-card-cta{ color:var(--cyan); font-weight:600; white-space:nowrap; }
.blog-meta{ font:600 12px/1 var(--mono); color:var(--ink-faint); margin:0 0 20px; }