/* Solver-one — design system (M-UIP, AWS-Connect-style light theme).
   ONE stylesheet for every page. Tokens measured/adapted from the AWS Connect product page
   (Architect brief 2026-08-24): white surfaces, pale-blue hero wash, ink #161D26 headings,
   steel-blue #0972D3 accent, dark-ink pill buttons, hairline dividers, generous whitespace.
   Class names are kept stable so existing pages re-skin with no markup change. */
:root{
  --bg:#f6f8fb;            /* app page background (very light grey; panels float white) */
  --panel:#ffffff;
  --panel2:#f1f5f9;        /* input fill / secondary surface */
  --line:#e3e8ef;          /* hairline dividers & borders */
  --ink:#161d26;           /* headings */
  --text:#2b333c;          /* body */
  --sub:#232b37;           /* sublines */
  --muted:#5a6675;         /* muted labels / captions (>= 4.5:1 on white) */
  --accent:#0972d3;        /* links / accent */
  --accent-d:#065aa8;      /* accent hover */
  --brand:#0972d3;         /* legacy aliases (kept: inline styles reference these) */
  --brand2:#0972d3;
  --ok:#1c7c43; --ok-bg:#e7f4ec; --ok-line:#bee3cb;
  --warn:#8a5a00;
  --danger:#c0362c; --danger-bg:#fcedec; --danger-line:#f3c7c2;
  --radius:12px;
  --radius-sm:9px;
  --shadow:0 1px 2px rgba(16,29,46,.04), 0 4px 16px rgba(16,29,46,.05);
  --shadow-lg:0 8px 34px rgba(16,29,46,.10);
  --wash:radial-gradient(115% 150% at 50% -35%, #d6e8fc 0%, #e6f0fc 34%, #f0f5fb 68%, #f6f8fb 100%);
  --maxw:1120px;
  --stickyh:134px;         /* sticky header (61) + sticky subnav (~58) + breathing room; anchor scroll-margin */
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:15px/1.6 var(--font);-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-d);text-decoration:underline}
h1,h2,h3{color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* ---- app shell (inner pages) ---- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:22px 22px 80px}
.nav{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.nav h1{font-size:18px;margin:0;flex:0 0 auto;letter-spacing:-.2px;font-weight:600}
.nav .sp{flex:1}
.nav a.btn{padding:8px 16px}
.logo{width:34px;height:34px;border-radius:9px;flex:0 0 auto;position:relative;
  background:linear-gradient(135deg,#0a7ee0,#0959a6)}
.logo::after{content:"S1";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  color:#fff;font-weight:700;font-size:13px;letter-spacing:.3px}

/* ---- hero (landing legacy .hero, kept minimal) ---- */
.hero{margin:26px 0 8px}
.hero h2{font-size:30px;margin:0 0 8px;line-height:1.2}
.hero p{color:var(--muted);margin:0;max-width:620px}

/* ---- cards / grid ---- */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:22px 0}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.card h3{margin:0 0 4px;font-size:16px}
.card .blurb{color:var(--muted);font-size:13px;min-height:34px}
.price{margin-top:12px;font-size:13px;color:var(--muted)}
.price b{color:var(--ink)}

/* ---- panels ---- */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin:16px 0;box-shadow:var(--shadow)}
.panel h3{margin:0 0 12px;font-size:16px}

/* ---- forms ---- */
label{display:block;font-size:13px;color:var(--muted);margin:12px 0 4px;font-weight:500}
input,select,textarea{width:100%;padding:11px 12px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius-sm);color:var(--ink);font-size:14px;font-family:inherit}
input::placeholder,textarea::placeholder{color:#9aa6b4}
input:focus,select:focus,textarea:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 3px rgba(9,114,211,.15)}
select{cursor:pointer}

/* ---- buttons: dark-ink pill (primary) / outline (ghost) ---- */
button,a.btn{display:inline-block;margin-top:12px;padding:11px 24px;border:1px solid var(--ink);border-radius:40px;
  cursor:pointer;background:var(--ink);color:#fff;font-weight:600;font-size:14px;line-height:1.2;text-align:center;
  transition:background .12s ease,border-color .12s ease,box-shadow .12s ease}
button:hover,a.btn:hover{background:#26313f;border-color:#26313f;color:#fff;text-decoration:none}
button.ghost,a.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
button.ghost:hover,a.btn.ghost:hover{background:var(--panel2);border-color:#cfd8e3;color:var(--ink)}
button:disabled{opacity:.55;cursor:not-allowed}

/* ---- layout helpers ---- */
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end}
.row>div{flex:1;min-width:170px}
.key{font-family:var(--mono);font-size:13px;word-break:break-all;
  background:var(--panel2);border:1px dashed #c6d2e0;border-radius:var(--radius-sm);padding:11px;margin-top:10px;color:var(--ink)}
.stat{display:flex;gap:30px;flex-wrap:wrap}
.stat .n{font-size:24px;font-weight:700;color:var(--ink)}
.stat .l{font-size:12px;color:var(--muted)}
.note{color:var(--muted);font-size:12px;margin-top:10px}
code{font-family:var(--mono);font-size:.92em;background:var(--panel2);border:1px solid var(--line);
  border-radius:5px;padding:1px 5px;color:var(--ink)}
pre code{background:none;border:0;padding:0}

/* ---- banners ---- */
.banner{padding:11px 13px;border-radius:var(--radius-sm);font-size:13px;margin:10px 0;border:1px solid transparent}
.banner.ok{background:var(--ok-bg);border-color:var(--ok-line);color:var(--ok)}
.banner.err{background:var(--danger-bg);border-color:var(--danger-line);color:var(--danger)}
.banner a{color:inherit;text-decoration:underline}

/* ---- centered auth card ---- */
.center{max-width:420px;margin:7vh auto 0}

/* ---- tabs (login) ---- */
.tab{display:flex;gap:8px;margin-bottom:14px}
.tab button{margin:0;flex:1;background:var(--panel2);border:1px solid var(--line);color:var(--muted);border-radius:var(--radius-sm)}
.tab button.active{background:var(--accent);border-color:var(--accent);color:#fff}
.tab button:hover{color:var(--ink)}
.tab button.active:hover{background:var(--accent-d);color:#fff}

/* ---- tables (shared defaults; pages add inline specifics) ---- */
table{border-collapse:collapse}
th{font-weight:600}

/* ======================================================================
   LANDING PAGE (index.html) — full-width sections over the app shell
   ====================================================================== */
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
/* anchor targets clear the sticky header + subnav so headings aren't hidden under them */
main section[id],main [id].anchor{scroll-margin-top:var(--stickyh)}
.section{padding:64px 0}
.section h2.sec-title{font-size:26px;margin:0 0 6px;letter-spacing:-.3px}
.section .sec-sub{color:var(--muted);margin:0 0 28px;font-size:15px;max-width:640px}

/* site header */
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line)}
.site-header .container{display:flex;align-items:center;gap:14px;height:60px}
.brand{display:flex;align-items:center;gap:10px}
.brand .wm{font-size:18px;font-weight:600;color:var(--ink);letter-spacing:-.2px;white-space:nowrap}
.only-mobile{display:none}
.site-header .grow{flex:1}
.site-header nav.top{display:flex;align-items:center;gap:22px}
.site-header nav.top a{color:var(--sub);font-size:14px;font-weight:500}
.site-header nav.top a:hover{color:var(--accent);text-decoration:none}
.header-cta{display:flex;align-items:center;gap:10px}
.header-cta .btn{margin-top:0;padding:9px 20px;font-size:14px}
.menu-toggle{display:none;margin-top:0;padding:8px 12px;background:transparent;border:1px solid var(--line);color:var(--ink)}

/* hero */
.hero-wrap{background:var(--wash);border-bottom:1px solid var(--line)}
.hero-wrap .container{padding-top:72px;padding-bottom:64px;text-align:center}
.hero-title{font-size:44px;line-height:1.12;letter-spacing:-.6px;margin:0 auto 16px;max-width:820px;font-weight:600;color:var(--ink)}
.hero-sub{font-size:18px;line-height:1.55;color:var(--sub);margin:0 auto 28px;max-width:620px}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.hero-cta .btn{margin-top:0;padding:12px 28px;font-size:15px}

/* in-page sub-nav (AWS rounded white bar) */
.subnav{position:sticky;top:60px;z-index:30;display:flex;justify-content:center;margin-top:-26px;padding:0 22px 8px}
.subnav .inner{display:flex;align-items:center;gap:6px;background:#fff;border:1px solid var(--line);border-radius:40px;
  box-shadow:0 4px 16px rgba(16,29,46,.12);padding:7px 10px;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
.subnav .inner .lead{font-weight:600;color:var(--ink);padding:4px 12px;white-space:nowrap}
.subnav .inner a{color:var(--sub);font-size:14px;padding:6px 13px;border-radius:20px;white-space:nowrap}
.subnav .inner a:hover{background:var(--panel2);color:var(--ink);text-decoration:none}

/* honest fact bar */
.factbar{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--panel);box-shadow:var(--shadow)}
.factbar>div{padding:22px 18px;text-align:center;border-right:1px solid var(--line)}
.factbar>div:last-child{border-right:0}
.factbar .fig{font-size:22px;font-weight:700;color:var(--ink);letter-spacing:-.3px}
.factbar .cap{font-size:13px;color:var(--muted);margin-top:4px}

/* pricing cards accent */
.pricecard .row-price{display:flex;justify-content:space-between;gap:8px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.pricecard .row-price .amt{font-weight:700;color:var(--ink)}
.pricecard .row-price .amt small{display:block;font-weight:500;color:var(--muted);font-size:11px}

/* code snippet block (landing + docs) */
.snippet{position:relative;background:#f6f8fa;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.snippet .bar{display:flex;align-items:center;gap:8px;padding:9px 14px;border-bottom:1px solid var(--line);background:#eef2f7}
.snippet .bar .t{font-size:12.5px;color:var(--muted);font-weight:600}
.snippet .bar .grow{flex:1}
.snippet pre{margin:0;padding:16px;overflow-x:auto;font-size:13px;line-height:1.6;color:#1f2933;background:none;border:0}
.snippet pre .hl{color:var(--accent);font-weight:600}
.copy-btn{margin-top:0;padding:6px 12px;font-size:12px;border-radius:20px;background:#fff;border:1px solid var(--line);color:var(--ink)}
.copy-btn:hover{background:var(--panel2);border-color:#cfd8e3;color:var(--ink)}
.copy-btn.done{color:var(--ok);border-color:var(--ok-line)}

/* 3-step strip */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.step{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.step .num{width:30px;height:30px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;
  justify-content:center;font-weight:700;font-size:14px;margin-bottom:12px}
.step h3{margin:0 0 5px;font-size:15px}
.step p{margin:0;color:var(--muted);font-size:13.5px}

/* feature trio */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.feature{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.feature .ic{width:38px;height:38px;border-radius:9px;background:#e8f1fc;color:var(--accent);display:flex;align-items:center;
  justify-content:center;margin-bottom:12px}
.feature .ic svg{width:20px;height:20px}
.feature h3{margin:0 0 6px;font-size:16px}
.feature p{margin:0;color:var(--muted);font-size:14px;line-height:1.55}

/* enterprise / compliance section */
.enterprise{background:var(--ink);border-radius:16px;padding:44px;color:#dbe3ee}
.enterprise h2{color:#fff;font-size:26px;margin:0 0 8px;letter-spacing:-.3px}
.enterprise .lead{color:#aeb9c8;max-width:620px;margin:0 0 28px}
.ent-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px 34px}
.ent-item{display:flex;gap:12px;align-items:flex-start}
.ent-item .tick{flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:rgba(9,114,211,.22);color:#7cc0ff;
  display:flex;align-items:center;justify-content:center;font-size:12px;margin-top:2px}
.ent-item h4{margin:0 0 3px;font-size:15px;color:#fff}
.ent-item p{margin:0;font-size:13.5px;color:#aeb9c8;line-height:1.5}
.powered{margin-top:30px;font-size:13px;color:#8b97a8}

/* site footer */
.site-footer{border-top:1px solid var(--line);background:var(--panel);margin-top:8px}
.site-footer .container{padding-top:48px;padding-bottom:40px}
.footer-cols{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
.footer-cols .about .brand{margin-bottom:12px}
.footer-cols .about p{color:var(--muted);font-size:13px;max-width:320px;margin:0}
.footer-cols h5{font-size:12px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin:0 0 12px;font-weight:600}
.footer-cols ul{list-style:none;padding:0;margin:0}
.footer-cols li{margin:0 0 9px}
.footer-cols a{color:var(--sub);font-size:14px}
.footer-cols a:hover{color:var(--accent);text-decoration:none}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;
  margin-top:36px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}

/* ---- responsive ---- */
@media (max-width:860px){
  .footer-cols{grid-template-columns:1fr 1fr}
  .footer-cols .about{grid-column:1/3}
  .ent-grid{grid-template-columns:1fr}
  .factbar{grid-template-columns:1fr 1fr}
  .factbar>div:nth-child(2){border-right:0}
  .factbar>div:nth-child(1),.factbar>div:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:760px){
  .site-header nav.top{display:none}
  .header-cta .btn{display:none}
  .menu-toggle{display:inline-block}
  .site-header nav.top.open{display:flex;position:absolute;top:60px;left:0;right:0;flex-direction:column;align-items:stretch;
    gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 22px 14px;box-shadow:var(--shadow)}
  .site-header nav.top.open a{padding:12px 0;border-bottom:1px solid var(--line)}
  .site-header nav.top.open .only-mobile{display:block;font-weight:600;color:var(--accent)}
  .steps,.features{grid-template-columns:1fr}
  .factbar>div{padding:16px 12px}
  .factbar .fig{font-size:20px}
  .hero-title{font-size:32px}
  .hero-sub{font-size:16px}
  .section{padding:44px 0}
  .enterprise{padding:28px}
  .enterprise h2{font-size:22px}
}
@media (max-width:440px){
  /* fact bar stays a 2x2 grid on phones (from the <=860 rule) — 4 stacked cards were too tall */
  .footer-cols{grid-template-columns:1fr}
  .footer-cols .about{grid-column:1}
  .hero-title{font-size:27px;letter-spacing:-.4px}
  .wrap{padding:18px 16px 60px}
  .container{padding:0 16px}
}