/* Old Tech Directory: design tokens + components
   Mirrors the UX/UI Design System doc (Oct 11, 2026). */
:root {
  --bg-base: #0A0A0A;
  --bg-elevated: #121212;
  --bg-floating: #1A1A1A;
  --bg-subtle: #0F0F0F;
  --text-primary: #F5F5F5;
  --text-secondary: #A3A3A3;
  --text-muted: #8A8A8A;
  --neon-cyan: #00FFFF;
  --neon-magenta: #FF2D7B;
  --neon-lime: #39FF14;
  --neon-amber: #FFD700;
  --border-subtle: #2A2A2A;
  --glow-cyan: 0 0 8px rgba(0,255,255,.4), 0 0 20px rgba(0,255,255,.15);
  --glow-magenta: 0 0 8px rgba(255,45,123,.4), 0 0 20px rgba(255,45,123,.15);
  --font-display: "Orbitron", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  --maxw: 1160px;
  --radius: 10px;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--neon-cyan); text-decoration: none; text-underline-offset: 3px; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--neon-cyan); outline-offset: 3px; border-radius: 4px; box-shadow: var(--glow-cyan); }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--bg-floating); padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,10,10,.82);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.site-header.scrolled { border-bottom-color: rgba(0,255,255,.55); box-shadow: 0 1px 14px rgba(0,255,255,.12); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 1rem; letter-spacing: .06em; color: var(--text-primary); text-transform: uppercase; }
.logo:hover { text-decoration: none; }
.logo .mark { width: 28px; height: 28px; color: var(--neon-cyan); filter: drop-shadow(0 0 4px rgba(0,255,255,.6)); }
.logo span b { color: var(--neon-cyan); font-weight: 700; }
.nav { display: flex; gap: 4px; align-items: center; }
.nav a { color: var(--text-secondary); padding: 10px 12px; border-radius: 8px; font-size: .95rem; min-height: 44px; display: inline-flex; align-items: center; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--neon-cyan); text-decoration: none; background: var(--bg-floating); }
.nav-toggle { display: none; background: none; border: 1px solid var(--border-subtle); color: var(--text-primary); border-radius: 8px; width: 44px; height: 44px; cursor: pointer; }
@media (max-width: 760px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav { display: none; position: absolute; left: 0; right: 0; top: 64px; flex-direction: column; align-items: stretch; background: var(--bg-base); border-bottom: 1px solid var(--border-subtle); padding: 8px 16px 16px; }
  .nav.open { display: flex; }
}

/* ---------- Preview banner ---------- */
.preview-banner { background: #1a1600; color: var(--neon-amber); font-size: .85rem; text-align: center; padding: 6px 12px; border-bottom: 1px solid #3a3200; }

/* ---------- Type ---------- */
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; }
h1 { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.75rem, 4.5vw, 2.25rem); letter-spacing: .02em; color: var(--neon-cyan); text-shadow: 0 0 6px rgba(0,255,255,.55), 0 0 20px rgba(0,255,255,.25); }
h2 { font-family: var(--font-display); font-weight: 600; font-size: 1.5rem; letter-spacing: .02em; color: var(--text-primary); margin-top: 2em; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1.1em; }
.meta, small { color: var(--text-secondary); font-size: .875rem; }
.mono { font-family: var(--font-mono); }

/* ---------- Hero (home) ---------- */
.hero { position: relative; overflow: hidden; padding: 88px 0 72px; border-bottom: 1px solid var(--border-subtle);
  background: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(0,255,255,.08), transparent 70%), radial-gradient(ellipse 50% 50% at 85% 100%, rgba(255,45,123,.06), transparent 70%), var(--bg-base); }
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(255,255,255,0) 50%, rgba(255,255,255,.9) 50%); background-size: 100% 4px; opacity: .025; }
.hero .wrap { position: relative; z-index: 1; }
.hero .eyebrow { font-family: var(--font-mono); color: var(--neon-magenta); font-size: .8rem; letter-spacing: .18em; text-transform: uppercase; margin-bottom: 14px; }
.hero h1 { font-size: clamp(2.2rem, 7vw, 4rem); margin-bottom: .3em; }
.hero p.sub { color: var(--text-secondary); font-size: 1.15rem; max-width: 620px; }
.search { margin-top: 28px; max-width: 560px; position: relative; }
.search input { width: 100%; background: var(--bg-elevated); border: 1px solid var(--border-subtle); color: var(--text-primary); border-radius: 999px; padding: 14px 20px 14px 46px; font: inherit; font-size: 1rem; min-height: 50px; transition: border-color .2s, box-shadow .2s; }
.search input::placeholder { color: var(--text-muted); }
.search input:focus { outline: none; border-color: var(--neon-cyan); box-shadow: var(--glow-cyan); }
.search svg { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); width: 18px; height: 18px; color: var(--text-muted); }
.pills { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.pill { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--border-subtle); background: var(--bg-elevated); color: var(--text-primary); font-size: .92rem; transition: border-color .2s, box-shadow .2s, color .2s; }
.pill:hover, .pill.active { text-decoration: none; border-color: var(--neon-cyan); color: var(--neon-cyan); box-shadow: var(--glow-cyan); }
.pill .count { font-family: var(--font-mono); color: var(--text-muted); font-size: .8rem; }

/* ---------- Sections ---------- */
section.block { padding: 56px 0; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.section-head h2 { margin: 0; }

/* ---------- Product card ---------- */
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
@media (max-width: 980px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .grid { grid-template-columns: 1fr; } }
.card { position: relative; display: flex; flex-direction: column; background: var(--bg-elevated); border: 1px solid var(--border-subtle); border-radius: var(--radius); overflow: hidden; color: var(--text-primary); transition: border-color .2s, box-shadow .2s, transform .2s; }
.card:hover { text-decoration: none; border-color: var(--neon-cyan); box-shadow: var(--glow-cyan); transform: translateY(-2px); }
.card .thumb { aspect-ratio: 16 / 10; background: radial-gradient(circle at 50% 45%, #161616, #0c0c0c 70%); display: grid; place-items: center; border-bottom: 1px solid var(--border-subtle); }
.card .thumb img { width: 34%; max-width: 110px; height: auto; opacity: .85; filter: drop-shadow(0 0 6px rgba(0,255,255,.35)); transition: opacity .2s; }
.card:hover .thumb img { opacity: 1; }
.card .body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card h3 { margin: 0; font-size: 1.12rem; }
.card p { margin: 0; color: var(--text-secondary); font-size: .95rem; line-height: 1.55; }
.card .row { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-top: auto; padding-top: 6px; }
.year { font-family: var(--font-mono); color: var(--text-muted); font-size: .82rem; }
.badge { display: inline-block; background: var(--neon-magenta); color: #0A0A0A; font-weight: 700; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; padding: 4px 9px; border-radius: 999px; line-height: 1.3; }
.badge.ghost { background: transparent; color: var(--neon-magenta); border: 1px solid var(--neon-magenta); }
.empty { color: var(--text-secondary); padding: 28px; border: 1px dashed var(--border-subtle); border-radius: var(--radius); text-align: center; }

/* ---------- Product page ---------- */
.crumbs { font-size: .85rem; color: var(--text-muted); padding-top: 26px; }
.crumbs a { color: var(--text-secondary); }
.crumbs span { margin: 0 6px; }
.p-hero { display: grid; grid-template-columns: 1.35fr 1fr; gap: 36px; align-items: center; padding: 26px 0 40px; border-bottom: 1px solid var(--border-subtle); }
@media (max-width: 820px) { .p-hero { grid-template-columns: minmax(0,1fr); } .p-hero .p-img { order: -1; max-height: 240px; } }
.p-hero .hook { font-size: 1.2rem; color: var(--text-primary); max-width: 560px; }
.p-hero .facts { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--text-secondary); font-size: .9rem; margin-top: 14px; }
.p-hero .facts b { color: var(--text-primary); font-weight: 500; font-family: var(--font-mono); font-size: .88rem; }
.p-img { background: radial-gradient(circle at 50% 45%, #171717, #0b0b0b 70%); border: 1px solid var(--border-subtle); border-radius: var(--radius); aspect-ratio: 4 / 3; display: grid; place-items: center; position: relative; }
.p-img img { width: 38%; height: auto; filter: drop-shadow(0 0 8px rgba(0,255,255,.4)); }
.p-img .caption { position: absolute; bottom: 10px; right: 12px; font-size: .72rem; color: var(--text-muted); font-family: var(--font-mono); }

.layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 48px; padding: 40px 0 72px; }

.prose { max-width: 740px; }
.prose h2:first-child { margin-top: 0; }
.prose ul, .prose ol { padding-left: 1.3em; margin: 0 0 1.2em; }
.prose li { margin-bottom: .45em; }
.prose li::marker { color: var(--neon-cyan); }
.prose strong { color: #fff; font-weight: 600; }

.verdict { background: var(--bg-elevated); border: 1px solid var(--border-subtle); border-left: 4px solid var(--neon-magenta); border-radius: var(--radius); padding: 22px 24px; margin-bottom: 36px; }
.verdict h2 { margin: 0 0 12px; font-size: 1.05rem; letter-spacing: .12em; text-transform: uppercase; color: var(--neon-magenta); text-shadow: none; }
.verdict ul { list-style: none; padding: 0; margin: 0; }
.verdict li { position: relative; padding-left: 26px; margin-bottom: 10px; }
.verdict li:last-child { margin-bottom: 0; }
.verdict li::before { content: ""; position: absolute; left: 2px; top: .62em; width: 12px; height: 2px; background: var(--neon-cyan); box-shadow: 0 0 6px rgba(0,255,255,.6); }

.table-wrap { overflow-x: auto; border: 1px solid var(--border-subtle); border-radius: var(--radius); margin: 0 0 1.4em; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--border-subtle); vertical-align: top; }
tr:last-child td { border-bottom: 0; }
tbody tr:nth-child(odd) { background: var(--bg-elevated); }
tbody tr:nth-child(even) { background: var(--bg-subtle); }
thead th { background: var(--bg-floating); color: var(--neon-cyan); font-weight: 600; font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; white-space: nowrap; }
td:first-child { color: var(--text-secondary); white-space: nowrap; }
.specs td:last-child, .compare td:not(:first-child) { font-family: var(--font-mono); font-size: .88rem; color: var(--text-primary); }
.compare td:first-child { font-family: var(--font-body); }

.worth { border-radius: var(--radius); padding: 22px 24px; margin: 40px 0; background: var(--bg-elevated); border: 1px solid var(--border-subtle); position: relative; }
.worth .label { font-family: var(--font-mono); font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; display: inline-flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.worth .label i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.worth h2 { margin: 0 0 10px; font-size: 1.3rem; text-shadow: none; }
.worth p { margin: 0; color: var(--text-primary); }
.worth.yes { border-color: rgba(57,255,20,.55); box-shadow: inset 4px 0 0 var(--neon-lime); }
.worth.yes .label { color: var(--neon-lime); } .worth.yes .label i { background: var(--neon-lime); box-shadow: 0 0 8px var(--neon-lime); }
.worth.depends { border-color: rgba(255,215,0,.5); box-shadow: inset 4px 0 0 var(--neon-amber); }
.worth.depends .label { color: var(--neon-amber); } .worth.depends .label i { background: var(--neon-amber); box-shadow: 0 0 8px var(--neon-amber); }
.worth.no { border-color: rgba(255,45,123,.5); box-shadow: inset 4px 0 0 var(--neon-magenta); }
.worth.no .label { color: var(--neon-magenta); } .worth.no .label i { background: var(--neon-magenta); }

.buy .btn { max-width: 100%; text-align: center; }
.buy { display: flex; flex-wrap: wrap; gap: 12px; margin: 6px 0 8px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 10px 20px; border-radius: 8px; border: 1px solid var(--neon-cyan); color: var(--neon-cyan); background: transparent; font-weight: 600; font-size: .95rem; transition: box-shadow .2s, background .2s; }
.btn:hover { text-decoration: none; box-shadow: var(--glow-cyan); background: rgba(0,255,255,.06); }
.btn.secondary { border-color: var(--neon-magenta); color: var(--neon-magenta); }
.btn.secondary:hover { box-shadow: var(--glow-magenta); background: rgba(255,45,123,.06); }
.btn .tbd { font-family: var(--font-mono); font-size: .66rem; font-weight: 500; color: var(--text-muted); border: 1px solid var(--border-subtle); border-radius: 4px; padding: 1px 5px; }
.disclosure { color: var(--text-muted); font-size: .82rem; margin-top: 10px; }

.faq details { background: var(--bg-elevated); border: 1px solid var(--border-subtle); border-radius: 8px; margin-bottom: 10px; }
.faq details[open] { border-color: #3a3a3a; }
.faq summary { cursor: pointer; padding: 14px 18px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; min-height: 44px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--neon-cyan); font-family: var(--font-mono); font-size: 1.1rem; }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 18px 16px; margin: 0; color: var(--text-secondary); }

blockquote { margin: 0 0 1.2em; padding: 12px 18px; border-left: 3px solid var(--neon-cyan); background: var(--bg-elevated); border-radius: 0 8px 8px 0; color: var(--text-secondary); }
blockquote p:last-child { margin: 0; }
.draft-note { border: 1px dashed rgba(255,215,0,.55); border-left: 3px solid var(--neon-amber); background: rgba(255,215,0,.04); color: var(--neon-amber); font-size: .92rem; border-radius: 8px; }
.draft-note strong { color: var(--neon-amber); font-weight: 500; }
body.hide-notes .draft-note { display: none; }

.toc { position: sticky; top: 88px; align-self: start; display: flex; flex-direction: column; gap: 18px; }
.panel { background: var(--bg-elevated); border: 1px solid var(--border-subtle); border-radius: var(--radius); padding: 18px 20px; }
.panel h3 { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 10px; font-weight: 500; }
.panel ol { list-style: none; margin: 0; padding: 0; }
.panel li a { display: block; padding: 6px 0; color: var(--text-secondary); font-size: .92rem; border-left: 2px solid transparent; padding-left: 10px; margin-left: -12px; }
.panel li a:hover, .panel li a.active { color: var(--neon-cyan); border-left-color: var(--neon-cyan); text-decoration: none; }
.panel .price { font-family: var(--font-mono); font-size: 1rem; color: var(--text-primary); }
@media (max-width: 980px) { .layout { grid-template-columns: minmax(0,1fr); } .toc { display: none; } }
.related { border-top: 1px solid var(--border-subtle); padding: 48px 0 64px; }
.related .grid .thumb { aspect-ratio: 16 / 7; }
.related .grid .thumb img { width: 18%; max-width: 64px; }

/* ---------- Static pages ---------- */
.page { padding: 48px 0 80px; }
.page .prose { margin: 0; }
.form { display: grid; gap: 14px; max-width: 520px; }
.form label { font-size: .9rem; color: var(--text-secondary); display: grid; gap: 6px; }
.form input, .form textarea { background: var(--bg-elevated); border: 1px solid var(--border-subtle); color: var(--text-primary); border-radius: 8px; padding: 12px 14px; font: inherit; min-height: 46px; }
.form input:focus, .form textarea:focus { outline: none; border-color: var(--neon-cyan); box-shadow: var(--glow-cyan); }
.err { text-align: center; padding: 120px 0; }
.err .code { font-family: var(--font-display); font-size: clamp(4rem, 16vw, 8rem); color: var(--neon-magenta); text-shadow: var(--glow-magenta); line-height: 1; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border-subtle); padding: 36px 0 48px; color: var(--text-muted); font-size: .88rem; }
.site-footer .cols { display: flex; flex-wrap: wrap; gap: 24px 48px; justify-content: space-between; }
.site-footer a { color: var(--text-secondary); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }

@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }

/* Price Index */
.pi-page h1 { margin: 6px 0 10px; }
.pi-page .eyebrow { color: var(--neon-magenta); font-size: .8rem; letter-spacing: .14em; text-transform: uppercase; margin-top: 18px; }
.pi-page .lede { color: var(--text-secondary); font-size: 1.1rem; max-width: 720px; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 26px 0 20px; max-width: 720px; }
.stats > div { background: var(--bg-elevated); border: 1px solid var(--border-subtle); border-radius: var(--radius); padding: 14px 16px; }
.stats b { display: block; font-family: var(--font-mono); font-size: 1.35rem; color: var(--neon-cyan); font-weight: 500; }
.stats span { color: var(--text-muted); font-size: .85rem; }
.pi-prose { max-width: none; }
.pi-prose h2 { display: flex; align-items: center; gap: 10px; }
.pi-prose h2 img { width: 28px; height: 28px; }
table.pi th, table.pi td { white-space: nowrap; }
table.pi td.num { font-family: var(--font-mono); white-space: nowrap; }
table.pi td.ctx { color: var(--text-secondary); font-size: .88rem; white-space: normal; min-width: 200px; }
table.pi td:first-child { min-width: 170px; }
.callout { display: grid; gap: 4px; padding: 22px 24px; border-radius: var(--radius); background: var(--bg-elevated); border: 1px solid var(--neon-cyan); box-shadow: var(--glow-cyan); color: var(--text-primary); }
.callout:hover { text-decoration: none; background: var(--bg-floating); }
.callout .mono { color: var(--neon-magenta); font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; }
.callout b { font-family: var(--font-display); font-size: 1.3rem; }
.callout span { color: var(--text-secondary); }
.callout .go { color: var(--neon-cyan); margin-top: 6px; }
@media (max-width: 560px) { .stats { grid-template-columns: 1fr; } .stats > div { display: flex; align-items: baseline; gap: 10px; } }