/* Tarby marketing site — shared design system.
   Light Adobe-Spectrum theme; tokens mirror src/Shared/Tarby.UI/Themes/BrandTheme.axaml.
   Used by every page under infra/site/. */
:root{
  --ink:#1A1F2E; --muted:#5A6478; --faint:#8A93A6;
  --line:#E1E5EB; --line-strong:#C4CAD4;
  --bg:#FAFBFC; --surface:#FFFFFF; --surface2:#F5F7FA;
  --primary:#0EA5C3; --primary-h:#0987A2; --primary-tint:rgba(14,165,195,.10);
  --gold:#E8A82C; --gold-h:#C8901C; --success:#12805C;
  --maxw:1120px; --maxw-doc:820px; --radius:12px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 12px 32px -12px rgba(16,24,40,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}

/* ── nav ── */
header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.3rem;letter-spacing:-.03em}
.brand .mark{width:30px;height:30px;border-radius:8px;background:var(--primary);
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.05rem}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links .lk{color:var(--muted);font-weight:600;font-size:.92rem;padding:.5rem .8rem;border-radius:7px}
.nav-links .lk:hover{color:var(--ink);background:var(--surface2)}
.btn{display:inline-flex;align-items:center;gap:.45rem;font-weight:600;font-size:.92rem;
  padding:.6rem 1.15rem;border-radius:8px;border:1px solid transparent;transition:.16s;cursor:pointer;white-space:nowrap}
.btn-quiet{color:var(--muted)} .btn-quiet:hover{color:var(--ink)}
.btn-secondary{border-color:var(--line-strong);color:var(--ink);background:#fff}
.btn-secondary:hover{border-color:var(--primary);color:var(--primary)}
.btn-primary{background:var(--primary);color:#fff} .btn-primary:hover{background:var(--primary-h)}
.btn-lg{padding:.85rem 1.7rem;font-size:1rem}

/* ── generic section ── */
section{padding:72px 0}
.eyebrow{display:inline-flex;align-items:center;gap:.5rem;font-size:.78rem;font-weight:700;
  letter-spacing:.09em;text-transform:uppercase;color:var(--primary-h);background:var(--primary-tint);
  border:1px solid rgba(14,165,195,.25);padding:.35rem .85rem;border-radius:999px;margin-bottom:1.2rem}
.eyebrow.dot b{width:6px;height:6px;border-radius:50%;background:var(--success);display:inline-block}
.section-head{max-width:56ch;margin:0 auto 44px;text-align:center}
.section-head h2{font-size:clamp(1.8rem,3.6vw,2.4rem);font-weight:800;letter-spacing:-.025em}
.section-head p{color:var(--muted);margin-top:.7rem;font-size:1.08rem}
h1{font-size:clamp(2.3rem,5.2vw,3.7rem);font-weight:800;letter-spacing:-.04em;line-height:1.06}
h1 .accent{color:var(--primary)}

/* ── hero ── */
.hero{position:relative;text-align:center;padding:88px 0 8px}
.hero::before{content:"";position:absolute;inset:0 0 auto;height:540px;z-index:-1;
  background:radial-gradient(60% 100% at 50% 0,var(--primary-tint),transparent 70%)}
.hero h1{max-width:16ch;margin:0 auto}
.lede{font-size:clamp(1.05rem,2vw,1.28rem);color:var(--muted);max-width:60ch;margin:1.3rem auto 2rem}
.cta{display:flex;gap:.7rem;justify-content:center;flex-wrap:wrap}
.surfaces{margin-top:1.4rem;color:var(--faint);font-size:.85rem;font-weight:600;letter-spacing:.04em}
.surfaces span{color:var(--muted)} .surfaces .sep{color:var(--line-strong);margin:0 .5rem}

/* ── product mockup (the real Hub) ── */
.shot{max-width:1000px;margin:40px auto 0;border-radius:16px;overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow);background:var(--surface)}
.chrome{display:flex;align-items:center;gap:8px;padding:11px 14px;background:#fff;border-bottom:1px solid var(--line)}
.dots{display:flex;gap:6px} .dots i{width:11px;height:11px;border-radius:50%;background:#E1E5EB}
.urlbar{margin:0 auto;font-size:.78rem;color:var(--faint);background:var(--surface2);border:1px solid var(--line);border-radius:6px;padding:.25rem 1rem}
.app{background:var(--bg);padding:26px 26px 30px;text-align:left}
.app h2{font-size:1.55rem;font-weight:800;letter-spacing:-.02em}
.app .sub{color:var(--faint);font-size:.9rem;margin-top:2px}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:20px 0 8px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px 16px}
.kpi .lab{font-size:.62rem;font-weight:700;letter-spacing:.09em;color:var(--faint)}
.kpi .val{font-size:1.5rem;font-weight:700;margin-top:6px;letter-spacing:-.01em}
.kpi .note{font-size:.72rem;color:var(--faint)}
.sechead{font-size:.68rem;font-weight:700;letter-spacing:.16em;color:var(--faint);margin:22px 0 12px}
.tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;flex-direction:column;min-height:128px}
.tile .chip{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:1.15rem}
.tile .t{font-weight:700;font-size:.96rem;margin-top:auto}
.tile .d{font-size:.74rem;color:var(--faint);margin-top:2px;line-height:1.35}
.tile .open{font-size:.74rem;font-weight:700;color:var(--primary);margin-top:10px}
.tile.dim{opacity:.62}
.tile .enable{align-self:flex-start;margin-top:10px;font-size:.72rem;font-weight:700;color:#fff;background:var(--gold);border:none;border-radius:6px;padding:.3rem .7rem}

/* ── cards / grids ── */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:26px;transition:.16s}
.card:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow)}
.card .k{display:inline-grid;place-items:center;width:38px;height:38px;border-radius:9px;
  background:var(--surface2);border:1px solid var(--line);font-weight:800;color:var(--primary);margin-bottom:14px;font-size:1.05rem}
.card .k.gold{color:var(--gold-h)}
.card h3{font-size:1.14rem;font-weight:700;margin-bottom:.45rem}
.card p{color:var(--muted);font-size:.97rem}
.card .more{display:inline-block;margin-top:12px;color:var(--primary);font-weight:700;font-size:.9rem}

/* editorial feature row (bordered) */
.frow{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line)}
.feat{padding:28px 24px;border-bottom:1px solid var(--line)}
.feat:not(:nth-child(3n)){border-right:1px solid var(--line)}
.feat .k{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;background:var(--surface2);
  border:1px solid var(--line);font-weight:800;color:var(--primary);margin-bottom:14px;font-size:1rem}
.feat h3{font-size:1.12rem;font-weight:700;margin-bottom:.4rem}
.feat p{color:var(--muted);font-size:.96rem}

/* stats band */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:40px 24px;box-shadow:var(--shadow)}
.stats .n{font-size:2rem;font-weight:800;color:var(--primary);letter-spacing:-.02em}
.stats .l{color:var(--muted);font-size:.92rem;margin-top:4px}

/* alt-bg section */
.alt{background:var(--surface)}

/* split (text + panel) */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split h2{font-size:clamp(1.7rem,3.4vw,2.2rem);font-weight:800;letter-spacing:-.02em;margin-bottom:1rem}
.split p{color:var(--muted);font-size:1.05rem;margin-bottom:1rem}
.checks{list-style:none;padding:0;margin:1rem 0 0}
.checks li{position:relative;padding-left:1.8rem;margin-bottom:.7rem;color:var(--ink)}
.checks li::before{content:"✓";position:absolute;left:0;color:var(--success);font-weight:800}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow)}

/* FAQ */
.faq details{border-bottom:1px solid var(--line);padding:18px 0}
.faq summary{font-weight:700;font-size:1.05rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--primary);font-weight:700}
.faq details[open] summary::after{content:"–"}
.faq p{color:var(--muted);margin-top:.7rem}

/* CTA band */
.band{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:52px 32px;text-align:center;box-shadow:var(--shadow)}
.band h2{font-size:clamp(1.6rem,3.4vw,2.2rem);font-weight:800;letter-spacing:-.02em}
.band p{color:var(--muted);max-width:48ch;margin:.7rem auto 1.6rem}

/* ── form ── */
.formwrap{max-width:680px;margin:0 auto}
.form{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:32px;box-shadow:var(--shadow)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px;display:flex;flex-direction:column}
.field label{font-size:.82rem;font-weight:700;color:var(--ink);margin-bottom:.4rem}
.field label .req{color:var(--primary)}
.field input,.field select,.field textarea{font-family:inherit;font-size:.96rem;color:var(--ink);
  background:var(--surface2);border:1px solid var(--line-strong);border-radius:9px;padding:.7rem .85rem;width:100%;transition:.16s}
.field textarea{resize:vertical;min-height:96px}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--primary);
  background:#fff;box-shadow:0 0 0 3px var(--primary-tint)}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}
.form .submit{width:100%;justify-content:center;margin-top:6px}
.form .hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}
.form-note{color:var(--faint);font-size:.82rem;text-align:center;margin-top:14px}
.form-msg{display:none;border-radius:14px;padding:32px;text-align:center;box-shadow:var(--shadow)}
.form-msg.show{display:block}
.form-msg.ok{background:rgba(18,128,92,.08);border:1px solid rgba(18,128,92,.3)}
.form-msg.ok h3{color:var(--success);font-size:1.3rem;font-weight:800;margin-bottom:.5rem}
.form-msg.err{background:rgba(190,60,60,.07);border:1px solid rgba(190,60,60,.3)}
.form-msg p{color:var(--muted);font-size:.98rem}
@media(max-width:560px){ .form .row{grid-template-columns:1fr} .form{padding:24px} }

/* ── doc prose (legal / about long-form) ── */
.doc{max-width:var(--maxw-doc);margin:0 auto;padding:56px 24px 8px}
.doc h1{font-size:2.1rem;font-weight:800;letter-spacing:-.03em;line-height:1.1}
.doc .updated{color:var(--faint);font-size:.9rem;margin-top:.4rem}
.doc .intro{color:var(--muted);font-size:1.05rem;margin:1.4rem 0 2rem}
.doc h2{font-size:1.3rem;font-weight:700;letter-spacing:-.01em;margin:2.2rem 0 .7rem;padding-top:1rem;border-top:1px solid var(--line)}
.doc h3{font-size:1.02rem;font-weight:700;margin:1.2rem 0 .4rem}
.doc p,.doc li{color:var(--muted);font-size:1rem;margin-bottom:.7rem}
.doc ul{padding-left:1.3rem} .doc li{margin-bottom:.4rem}
.doc strong{color:var(--ink)} .doc a{color:var(--primary)} .doc a:hover{color:var(--primary-h)}

/* ── footer ── */
footer{margin-top:72px;border-top:1px solid var(--line);padding:44px 0 28px;color:var(--faint);font-size:.9rem}
.fcols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:24px;margin-bottom:32px}
.fcols .fbrand .brand{margin-bottom:10px}
.fcols .fbrand p{color:var(--faint);font-size:.88rem;max-width:34ch}
.fcol h4{font-size:.72rem;font-weight:700;letter-spacing:.1em;color:var(--ink);margin-bottom:12px;text-transform:uppercase}
.fcol a{display:block;color:var(--muted);padding:4px 0;font-size:.92rem} .fcol a:hover{color:var(--primary)}
.fbar{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;padding-top:20px;border-top:1px solid var(--line)}
.fbar a:hover{color:var(--muted)} .fbar .links{display:flex;gap:18px;flex-wrap:wrap}

@media(max-width:900px){
  .grid-3,.frow{grid-template-columns:1fr 1fr}
  .feat:not(:nth-child(3n)){border-right:none}
  .feat:nth-child(odd){border-right:1px solid var(--line)}
  .fcols{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:28px}
  .stats{grid-template-columns:1fr 1fr;gap:28px}
  .kpis{grid-template-columns:repeat(2,1fr)} .tiles{grid-template-columns:repeat(2,1fr)}
  .nav-links .lk{display:none}
}
@media(max-width:560px){ .grid-3,.grid-2,.frow{grid-template-columns:1fr} .feat{border-right:none!important} .tiles{grid-template-columns:1fr} }