/* ═══════════════════════════════════════════════════════════════
   NoCredEx — site.css
   Shared by index.html, features.html, offline.html
   Typeface: IBM Plex Sans / IBM Plex Mono (self-hosted, no CDN)
═══════════════════════════════════════════════════════════════ */

@font-face{font-family:'IBM Plex Sans';src:url('fonts/ibm-plex-sans-latin-400-normal.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Sans';src:url('fonts/ibm-plex-sans-latin-500-normal.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Sans';src:url('fonts/ibm-plex-sans-latin-600-normal.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Sans';src:url('fonts/ibm-plex-sans-latin-700-normal.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2');font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('fonts/ibm-plex-mono-latin-600-normal.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}

/* ── Tokens ─────────────────────────────────────────────────── */
:root{
  --sans:'IBM Plex Sans','Segoe UI',system-ui,sans-serif;
  --mono:'IBM Plex Mono',Consolas,'Courier New',monospace;
  --logo:#3b82f6;
  --max:1120px;
  --gutter:24px;
  --r-s:5px; --r-m:8px; --r-l:12px;
  --nav-h:60px;
}
[data-theme="light"]{
  --paper:#ffffff; --paper-2:#f3f5f8; --paper-3:#e8ecf1;
  --line:#d8dee6; --line-2:#bcc6d2;
  --ink:#111a2b; --ink-2:#3d4a5c; --ink-3:#6f7b8b;
  --blue:#2563eb; --blue-2:#1d4ed8; --blue-soft:rgba(37,99,235,.09);
  --mark:#ffe45c; --mark-ink:#111a2b;
  --crit:#c81e1e; --crit-soft:rgba(200,30,30,.09);
  --high:#b45309; --ok:#15803d;
  --shadow:0 12px 28px rgba(17,26,43,.12);
  --nav-bg:rgba(255,255,255,.97);
  /* Page atmosphere: fixed colour mesh behind translucent cards */
  --page-bg:#f3f5f9;
  --mesh:radial-gradient(60% 50% at 85% 0%,rgba(37,99,235,.14),transparent 60%),
         radial-gradient(45% 40% at 0% 45%,rgba(109,79,216,.11),transparent 60%),
         radial-gradient(50% 45% at 90% 95%,rgba(183,121,31,.11),transparent 60%),
         radial-gradient(35% 30% at 20% 100%,rgba(15,138,122,.08),transparent 60%);
  --card-bg:rgba(255,255,255,.9);
  --alt-bg:rgba(255,255,255,.42);
  color-scheme:light;
}
[data-theme="dark"]{
  --paper:#0f1622; --paper-2:#151d2b; --paper-3:#1c2636;
  --line:#27334a; --line-2:#3a4a66;
  --ink:#eef2f7; --ink-2:#b6c0ce; --ink-3:#8290a3;
  --blue:#6b9bf5; --blue-2:#89b0f8; --blue-soft:rgba(107,155,245,.14);
  --mark:#f2d34c; --mark-ink:#111a2b;
  --crit:#f0655a; --crit-soft:rgba(240,101,90,.14);
  --high:#f0a04b; --ok:#4ade80;
  --shadow:0 12px 28px rgba(0,0,0,.45);
  --nav-bg:rgba(15,22,34,.97);
  --page-bg:#0e1420;
  --mesh:radial-gradient(60% 50% at 85% 0%,rgba(107,155,245,.18),transparent 60%),
         radial-gradient(45% 40% at 0% 45%,rgba(160,140,240,.13),transparent 60%),
         radial-gradient(50% 45% at 90% 95%,rgba(240,180,84,.09),transparent 60%),
         radial-gradient(35% 30% at 20% 100%,rgba(63,195,176,.08),transparent 60%);
  --card-bg:rgba(21,29,43,.88);
  --alt-bg:rgba(255,255,255,.035);
  color-scheme:dark;
}

/* ── Base ───────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--nav-h) + 20px)}
/* Anchor targets sit below the fixed header instead of under it */
[id]{scroll-margin-top:calc(var(--nav-h) + 20px)}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
/* The colour mesh scrolls with the page (no fixed layer): it is rasterised once into tiles
   instead of being re-composited under every frame. Sized to cover the first ~2 screens. */
body{
  background:var(--mesh) no-repeat 0 0 / 100% 1800px,var(--mesh) no-repeat 0 100% / 100% 1600px,var(--page-bg);color:var(--ink);
  font-family:var(--sans);font-size:16px;line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  transition:background-color .25s,color .25s;
}
a{color:inherit;text-decoration:none}
p a,li a,.link{color:var(--blue);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
p a:hover,li a:hover,.link:hover{color:var(--blue-2)}
img,svg{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:3px}
::selection{background:var(--mark);color:var(--mark-ink)}
code,kbd,.mono{font-family:var(--mono);font-size:.92em}

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

/* ── Type scale ─────────────────────────────────────────────── */
h1,h2,h3,h4{font-weight:600;line-height:1.12;letter-spacing:-.015em;text-wrap:balance}
h1{font-size:clamp(32px,4vw,52px);line-height:1.08;letter-spacing:-.025em}
h2{font-size:clamp(27px,3.3vw,40px)}
h3{font-size:20px;letter-spacing:-.01em}
h4{font-size:17px}
.lede{font-size:clamp(17px,1.45vw,19px);line-height:1.55;color:var(--ink-2);max-width:56ch}
.small{font-size:14px;color:var(--ink-3)}
.muted{color:var(--ink-2)}
.path{font-family:var(--mono);font-size:.92em;color:var(--ink-2);word-break:break-all}
.hl{background:var(--mark);color:var(--mark-ink);padding:0 .18em;border-radius:2px;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.sev{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.02em;padding:2px 8px;border-radius:var(--r-s)}
.sev::before{content:'';width:7px;height:7px;border-radius:50%;background:currentColor}
.sev-crit{color:var(--crit);background:var(--crit-soft)}
.sev-high{color:var(--high);background:rgba(180,83,9,.10)}

/* ── Buttons ────────────────────────────────────────────────── */
.button{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:46px;padding:0 22px;border-radius:var(--r-m);
  font-weight:600;font-size:15.5px;line-height:1;white-space:nowrap;
  border:1.5px solid transparent;transition:background-color .15s,border-color .15s,color .15s;
}
.btn-primary{background:var(--blue);color:#fff;border-color:var(--blue)}
.btn-primary:hover{background:var(--blue-2);border-color:var(--blue-2)}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-secondary:hover{border-color:var(--ink-3);background:var(--paper-2)}
.btn-sm{min-height:38px;padding:0 16px;font-size:14px}

/* ── Nav ────────────────────────────────────────────────────── */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  background:var(--nav-bg);
  border-bottom:1px solid var(--line);transition:background-color .25s,border-color .25s;
}
.nav-inner{max-width:var(--max);margin:0 auto;padding:0 var(--gutter);height:100%;display:flex;align-items:center;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:600;font-size:17px;letter-spacing:-.01em;flex-shrink:0}
.logo svg{width:28px;height:28px}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none;margin-left:8px}
.nav-links a{display:inline-block;padding:8px 10px;border-radius:var(--r-s);font-size:14.5px;font-weight:500;color:var(--ink-2);white-space:nowrap}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink);background:var(--paper-2)}
.nav-links .nav-cta{display:none}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:8px;flex-shrink:0}
.seg{display:inline-flex;border:1px solid var(--line-2);border-radius:var(--r-s);overflow:hidden}
/* buttons switch in place; links (pre-rendered language pages) navigate to /en/ or / */
.seg button,.seg a{padding:6px 10px;font-size:12.5px;font-weight:600;letter-spacing:.03em;color:var(--ink-3);min-width:36px;text-align:center;text-decoration:none}
.seg button[aria-pressed="true"],.seg a[aria-current="page"]{background:var(--ink);color:var(--paper)}
.seg button+button,.seg a+a{border-left:1px solid var(--line-2)}
.theme-toggle{width:36px;height:32px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-2);border-radius:var(--r-s);color:var(--ink-2)}
.theme-toggle:hover{background:var(--paper-2);color:var(--ink)}
.theme-toggle svg{width:16px;height:16px}
[data-theme="light"] .ico-sun{display:none}
[data-theme="dark"] .ico-moon{display:none}
.burger{display:none;width:40px;height:36px;align-items:center;justify-content:center;border:1px solid var(--line-2);border-radius:var(--r-s)}
.burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:transform .2s,background-color .2s}
.burger span::before,.burger span::after{content:'';position:absolute;left:0;width:18px;height:2px;background:var(--ink);transition:transform .2s,top .2s}
.burger span::before{top:-6px}.burger span::after{top:6px}
.site-nav.open .burger span{background:transparent}
.site-nav.open .burger span::before{top:0;transform:rotate(45deg)}
.site-nav.open .burger span::after{top:0;transform:rotate(-45deg)}

/* ── Sections ───────────────────────────────────────────────── */
main{padding-top:var(--nav-h)}
.section{padding:88px 0}
.section-alt{background:var(--alt-bg);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:44px}
.section-head .lede{margin-top:14px}
.section-head .kicker{display:block;font-family:var(--mono);font-size:13px;color:var(--ink-3);margin-bottom:12px}

/* ── Two-column layout helper ──────────────────────────────── */
.cols{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:56px;align-items:start}
.cols-eq{grid-template-columns:1fr 1fr}
.cols>*{min-width:0;max-width:100%}

/* ── Definition list (features / questionnaire) ────────────── */
.dl{border-top:1px solid var(--line)}
.dl-row{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}
.dl-row dt{font-weight:600;font-size:17px;letter-spacing:-.01em}
.dl-row dt .tag{display:inline-block;margin-left:8px;font-family:var(--mono);font-weight:500;font-size:11.5px;color:var(--ink-3);border:1px solid var(--line-2);border-radius:3px;padding:1px 6px;vertical-align:middle}
.dl-row dd{color:var(--ink-2);max-width:62ch}
.dl-row dd .mono{color:var(--ink-3)}

/* ── FAQ ────────────────────────────────────────────────────── */
.faq{max-width:760px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px 0;cursor:pointer;font-weight:600;font-size:16.5px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';font-family:var(--mono);font-size:20px;color:var(--ink-3);flex-shrink:0;width:22px;text-align:center;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--ink-2);padding:0 44px 20px 0;max-width:66ch}

/* ── CTA band ───────────────────────────────────────────────── */
.cta-band{padding:88px 0;background:var(--ink);color:var(--paper)}
[data-theme="dark"] .cta-band{background:var(--paper-3);color:var(--ink)}
.cta-band h2{max-width:20ch}
.cta-band .lede{color:inherit;opacity:.78;margin-top:14px}
.cta-band .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.cta-band .btn-secondary{color:inherit;border-color:rgba(255,255,255,.35)}
.cta-band .btn-secondary:hover{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.6)}
[data-theme="dark"] .cta-band .btn-secondary{border-color:var(--line-2)}
.cta-band .fine{margin-top:18px;font-size:13.5px;opacity:.65}

/* ── Footer ─────────────────────────────────────────────────── */
.footer{border-top:1px solid var(--line);padding:36px 0 28px;font-size:14px;color:var(--ink-3)}
.footer-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px 32px}
.footer-links{display:flex;flex-wrap:wrap;gap:4px 18px;list-style:none}
.footer-links a{color:var(--ink-2)}
.footer-links a:hover{color:var(--ink)}
.footer-copy{margin-top:20px;padding-top:16px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}

/* ── Responsive ─────────────────────────────────────────────── */
@media(max-width:1000px){
  .cols{grid-template-columns:1fr;gap:36px}
  .dl-row{grid-template-columns:1fr;gap:6px;padding:18px 0}
}
@media(max-width:820px){
  :root{--gutter:20px}
  .nav-links{
    display:none;position:fixed;top:var(--nav-h);left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;padding:12px var(--gutter) 18px;
    background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);
  }
  .site-nav.open .nav-links{display:flex}
  .nav-links a{padding:12px 10px;font-size:16px;white-space:normal}
  .nav-links .nav-cta{display:block;margin-top:8px;text-align:center;background:var(--blue);color:#fff;font-weight:600}
  .nav-links .nav-cta:hover{background:var(--blue-2);color:#fff}
  .nav-trial-btn{display:none}
  .burger{display:inline-flex}
  .section{padding:64px 0}
  .section-head{margin-bottom:32px}
}
@media(max-width:480px){
  :root{--gutter:16px}
  .button{width:100%}
  h1{letter-spacing:-.02em}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}