/* ============================================================
   AdNexusIO — site stylesheet (light theme)
   Palette: ink #0E2A52 · brand navy #0B3C78 · teal #0AAAB7
            bg #F6F9FC · surface #FFFFFF · line #E2E9F2
   Type:    Poppins (display) · Inter (body) · JetBrains Mono (code)
   ============================================================ */

:root{
  --ink:        #0E2A52;
  --ink-soft:   #3B4E6B;
  --muted:      #5A6B85;
  --brand:      #0B3C78;
  --teal:       #0AAAB7;
  --teal-dark:  #078B96;
  --teal-tint:  #E6F7F8;
  --navy-tint:  #EDF3FB;
  --bg:         #F6F9FC;
  --surface:    #FFFFFF;
  --line:       #E2E9F2;
  --line-soft:  #EDF2F8;
  --ok:         #178A50;
  --warn:       #B7791F;
  --shadow-sm:  0 1px 2px rgba(14,42,82,.06), 0 1px 3px rgba(14,42,82,.08);
  --shadow-md:  0 4px 16px rgba(14,42,82,.08), 0 1px 3px rgba(14,42,82,.06);
  --radius:     12px;
  --font-display:'Poppins',system-ui,sans-serif;
  --font-body:  'Inter',system-ui,sans-serif;
  --font-mono:  'JetBrains Mono',ui-monospace,Menlo,monospace;
  --maxw:       1120px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font-body);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:var(--teal-dark);text-decoration:none}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--ink);line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(34px,4.6vw,52px);font-weight:700}
h2{font-size:clamp(26px,3.2vw,34px);font-weight:600}
h3{font-size:20px;font-weight:600}
p{margin:0 0 1em;color:var(--ink-soft)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:36px;width:auto}
.nav-links{display:flex;align-items:center;gap:26px;font-size:15px;font-weight:500}
.nav-links a{color:var(--ink-soft)}
.nav-links a:hover{color:var(--brand);text-decoration:none}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-display);font-weight:600;font-size:15px;
  padding:11px 22px;border-radius:10px;border:1px solid transparent;
  cursor:pointer;transition:transform .12s ease,box-shadow .12s ease,background .12s ease;
  text-decoration:none !important;
}
.btn-primary{background:var(--teal);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--teal-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal-dark)}
.btn-lg{padding:14px 28px;font-size:16px;border-radius:12px}
@media (max-width:760px){.nav-links .hide-m{display:none}}

/* ---------- Hero ---------- */
.hero{padding:84px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
@media (max-width:900px){.hero-grid{grid-template-columns:1fr;gap:40px}}
.eyebrow{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--teal-dark);font-weight:600;
  display:inline-flex;align-items:center;gap:10px;margin-bottom:18px;
}
.eyebrow::before{content:'';width:22px;height:2px;background:var(--teal);border-radius:2px}
.hero h1 .accent{color:var(--teal)}
.hero .lead{font-size:19px;max-width:52ch;margin-bottom:30px}
.hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.trust-strip{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:14px;color:var(--muted)}
.trust-strip span{display:inline-flex;align-items:center;gap:7px}
.trust-strip svg{flex:none}

/* Signature: live widget preview */
.widget-demo{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  box-shadow:var(--shadow-md);padding:22px;position:relative;
}
.widget-demo .browser-bar{
  display:flex;align-items:center;gap:8px;padding-bottom:14px;margin-bottom:16px;
  border-bottom:1px solid var(--line-soft);
}
.browser-bar .dot{width:10px;height:10px;border-radius:50%;background:var(--line)}
.browser-bar .url{
  font-family:var(--font-mono);font-size:12px;color:var(--muted);
  background:var(--bg);border:1px solid var(--line-soft);border-radius:6px;
  padding:4px 12px;margin-left:6px;
}
.article-line{height:9px;border-radius:5px;background:var(--line-soft);margin-bottom:10px}
.article-line.w80{width:80%}.article-line.w60{width:60%}.article-line.w90{width:90%}
.ad-card{
  margin:16px 0;border:1px solid var(--line);border-radius:12px;padding:16px;
  background:linear-gradient(135deg,var(--teal-tint),#fff 60%);
  display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center;
}
.ad-card .thumb{
  width:46px;height:46px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--teal));
  display:flex;align-items:center;justify-content:center;color:#fff;
  font-family:var(--font-display);font-weight:700;font-size:18px;
}
.ad-card .t{font-family:var(--font-display);font-weight:600;font-size:15px;color:var(--ink);margin:0 0 2px}
.ad-card .d{font-size:13px;color:var(--muted);margin:0}
.ad-card .cta{font-size:13px;font-weight:600;color:var(--teal-dark);white-space:nowrap}
.sponsored-tag{
  position:absolute;top:-11px;right:18px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  background:var(--ink);color:#fff;border-radius:20px;padding:4px 12px;
}
.demo-caption{font-size:13px;color:var(--muted);margin:14px 0 0;text-align:center}

/* ---------- Sections ---------- */
.section{padding:72px 0}
.section.alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:640px;margin-bottom:44px}
.section-head p{font-size:17px}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:860px){.steps{grid-template-columns:1fr}}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow-sm);
}
.section.alt .step{background:var(--bg)}
.step .num{
  font-family:var(--font-mono);font-size:12px;color:var(--teal-dark);
  letter-spacing:.12em;font-weight:600;display:block;margin-bottom:14px;
}
.step .icon{
  width:44px;height:44px;border-radius:10px;background:var(--teal-tint);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--teal-dark);
}
.step p{font-size:15px;margin:0}

.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
@media (max-width:860px){.features{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.features{grid-template-columns:1fr}}
.feature{padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.feature h3{font-size:17px;display:flex;align-items:center;gap:10px}
.feature p{font-size:14.5px;margin:0;color:var(--muted)}
.feature .dot-ic{width:9px;height:9px;border-radius:3px;background:var(--teal);flex:none}

/* ---------- Install snippet ---------- */
.install-box{
  background:var(--ink);border-radius:16px;padding:28px;box-shadow:var(--shadow-md);
  overflow:auto;
}
.install-box .label{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;
  color:#8FB8D9;margin-bottom:14px;display:block;
}
.install-box pre{margin:0;font-family:var(--font-mono);font-size:13.5px;line-height:1.7;color:#EAF2FA;white-space:pre}
.install-box .tag{color:#7DD3DC}.install-box .attr{color:#9DB8D9}.install-box .val{color:#C6E8B8}

/* ---------- Pledge band ---------- */
.pledge{
  border:1px solid var(--line);border-radius:16px;background:var(--surface);
  padding:34px;display:grid;grid-template-columns:auto 1fr;gap:24px;align-items:center;
  box-shadow:var(--shadow-sm);
}
@media (max-width:700px){.pledge{grid-template-columns:1fr}}
.pledge .shield{
  width:64px;height:64px;border-radius:16px;background:var(--teal-tint);
  display:flex;align-items:center;justify-content:center;color:var(--teal-dark);
}
.pledge h3{margin-bottom:6px}
.pledge p{margin:0;font-size:15px}

/* ---------- FAQ teaser ---------- */
.faq-teaser{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media (max-width:760px){.faq-teaser{grid-template-columns:1fr}}
.qa{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}
.qa h3{font-size:16px;margin-bottom:6px}
.qa p{font-size:14.5px;margin:0;color:var(--muted)}

/* ---------- Footer ---------- */
.site-footer{background:var(--surface);border-top:1px solid var(--line);padding:52px 0 32px;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
@media (max-width:820px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr}}
.site-footer img{height:32px;width:auto;margin-bottom:12px}
.site-footer .about{font-size:14px;color:var(--muted);max-width:34ch}
.fcol h4{font-family:var(--font-display);font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink);margin:0 0 14px}
.fcol a{display:block;font-size:14.5px;color:var(--ink-soft);margin-bottom:10px}
.fcol a:hover{color:var(--teal-dark);text-decoration:none}
.footer-base{border-top:1px solid var(--line-soft);padding-top:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}

/* ---------- Legal / doc pages ---------- */
.doc-wrap{max-width:820px;margin:0 auto;padding:64px 24px 80px}
.doc-wrap .updated{font-family:var(--font-mono);font-size:12.5px;color:var(--muted);margin-bottom:34px;display:block}
.doc-wrap h1{font-size:clamp(30px,4vw,40px);margin-bottom:8px}
.doc-wrap h2{font-size:22px;margin:44px 0 14px;padding-top:22px;border-top:1px solid var(--line-soft)}
.doc-wrap h3{font-size:17px;margin:26px 0 10px}
.doc-wrap p,.doc-wrap li{font-size:15.5px;color:var(--ink-soft)}
.doc-wrap ul,.doc-wrap ol{padding-left:22px;margin:0 0 1em}
.doc-wrap li{margin-bottom:8px}
.doc-wrap table{width:100%;border-collapse:collapse;font-size:14.5px;margin:0 0 1.4em}
.doc-wrap th,.doc-wrap td{border:1px solid var(--line);padding:10px 14px;text-align:left;vertical-align:top}
.doc-wrap th{background:var(--navy-tint);font-family:var(--font-display);font-weight:600;font-size:13.5px}
/* Wide tables (cookie policy, privacy data table) must scroll rather than
   overflow the viewport on phones. */
@media (max-width:640px){
  .doc-wrap table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;font-size:13.5px}
  .doc-wrap th,.doc-wrap td{min-width:110px;padding:9px 11px}
  .doc-wrap td:first-child,.doc-wrap th:first-child{min-width:90px}
}
.doc-wrap code{font-family:var(--font-mono);font-size:.9em;background:var(--navy-tint);border-radius:5px;padding:2px 7px}
.callout{
  border-left:3px solid var(--teal);background:var(--teal-tint);
  border-radius:0 10px 10px 0;padding:16px 20px;margin:0 0 1.4em;font-size:15px;color:var(--ink-soft);
}

/* ---------- Help / FAQ page ---------- */
.help-search{
  width:100%;padding:14px 18px;font-size:16px;font-family:var(--font-body);
  border:1px solid var(--line);border-radius:12px;background:var(--surface);
  color:var(--ink);margin:8px 0 34px;box-shadow:var(--shadow-sm);
}
.help-search:focus{outline:2px solid var(--teal);outline-offset:1px;border-color:var(--teal)}
.help-cat{font-family:var(--font-display);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--teal-dark);margin:38px 0 14px;font-weight:600}
details.faq{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;
}
details.faq summary{
  cursor:pointer;list-style:none;padding:16px 20px;font-family:var(--font-display);
  font-weight:600;font-size:15.5px;color:var(--ink);display:flex;justify-content:space-between;gap:14px;align-items:center;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:'+';font-size:20px;color:var(--teal-dark);font-weight:400;flex:none}
details.faq[open] summary::after{content:'–'}
details.faq .a{padding:0 20px 18px;font-size:15px;color:var(--ink-soft)}
details.faq .a p{margin:0 0 .8em}
details.faq .a p:last-child{margin:0}
.hidden{display:none !important}

/* ---------- Storage notice ---------- */
.storage-notice{
  position:fixed;left:18px;bottom:18px;z-index:80;max-width:400px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-md);padding:16px 18px;display:none;
  font-size:13.5px;color:var(--ink-soft);
}
.storage-notice.show{display:block}
.storage-notice .row{display:flex;gap:14px;align-items:flex-start}
.storage-notice p{margin:0 0 4px}
.storage-notice a{font-weight:600}
.storage-notice button{
  background:var(--teal);color:#fff;border:none;border-radius:8px;
  font-family:var(--font-display);font-weight:600;font-size:13px;
  padding:8px 16px;cursor:pointer;margin-top:10px;
}
.storage-notice button:hover{background:var(--teal-dark)}
@media (max-width:520px){.storage-notice{left:12px;right:12px;max-width:none}}