/* ════════════════════════════════════════════════════════
   shared.css — Mathonymics Extensions Site
   Used by: index.html, */extension/privacy-policy.html,
            */extension/about.html, */extension/pricing.html
════════════════════════════════════════════════════════ */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#060609;
  --bg1:#0b0b10;
  --bg2:#101016;
  --bg3:#16161e;
  --bdr:#1c1c28;
  --bdr2:#252533;
  --tx:#f2f2ff;
  --tx2:#8888aa;
  --tx3:#44446a;
  --tx4:#22223a;
  --gold:#f0c040;
  --goldd:rgba(240,192,64,.1);
  --teal:#00e5b0;
  --teald:rgba(0,229,176,.08);
  --r1:6px;--r2:12px;--r3:18px;--r4:24px;
  --font:'DM Sans','Helvetica Neue',sans-serif;
  --display:'Syne','Helvetica Neue',sans-serif;
  --mono:'DM Mono','Fira Mono','Courier New',monospace;
}

html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--tx);
  font-family:var(--font);font-size:15px;line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
button,select,input,a{font-family:var(--font)}

/* Noise texture */
body::before{
  content:'';position:fixed;inset:0;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity:.025;pointer-events:none;z-index:0;
}

/* ── NAV ─────────────────────────────────────────────── */
.site-nav{
  position:sticky;top:0;z-index:100;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 48px;
  background:rgba(6,6,9,.9);
  border-bottom:1px solid var(--bdr);
  backdrop-filter:blur(14px);
  gap:16px;
}
.nav-logo{
  display:flex;align-items:center;gap:10px;
  text-decoration:none;flex-shrink:0;
}
.nav-logo-mark{
  width:30px;height:30px;border-radius:7px;
  background:var(--bg3);border:1px solid var(--bdr2);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-size:12px;color:var(--gold);
}
.nav-logo-text{
  font-family:var(--display);font-size:14px;font-weight:700;
  color:var(--tx);letter-spacing:.02em;
}
.nav-logo-text span{color:var(--gold)}

.nav-links{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.nav-link{
  padding:5px 11px;border-radius:var(--r1);
  font-size:12.5px;font-weight:500;color:var(--tx3);
  text-decoration:none;transition:all .15s;white-space:nowrap;
}
.nav-link:hover{color:var(--tx2);background:var(--bg3)}
.nav-link.active{color:var(--tx);background:var(--bg3);border:1px solid var(--bdr2)}

/* Sub-nav breadcrumb (extension pages) */
.sub-nav{
  position:sticky;top:53px;z-index:99;
  display:flex;align-items:center;gap:6px;
  padding:8px 48px;
  background:rgba(6,6,9,.85);
  border-bottom:1px solid var(--bdr);
  backdrop-filter:blur(14px);
  font-family:var(--mono);font-size:11px;color:var(--tx3);
}
.sub-nav a{color:var(--tx3);text-decoration:none;transition:color .14s}
.sub-nav a:hover{color:var(--tx2)}
.sub-nav-sep{opacity:.3}
.sub-nav-current{color:var(--tx2)}
.sub-nav-tabs{
  margin-left:auto;
  display:flex;gap:3px;
}
.sub-nav-tab{
  padding:4px 10px;border-radius:var(--r1);
  font-family:var(--mono);font-size:10.5px;font-weight:500;
  color:var(--tx3);text-decoration:none;
  transition:all .14s;letter-spacing:.03em;
}
.sub-nav-tab:hover{color:var(--tx2);background:var(--bg3)}
.sub-nav-tab.active{
  color:var(--tx);background:var(--bg3);
  border:1px solid var(--bdr2);
}

/* ── PAGE WRAPPER ────────────────────────────────────── */
.page-wrap{
  position:relative;z-index:1;
  max-width:780px;margin:0 auto;
  padding:56px 48px 100px;
}
.page-wrap-wide{
  position:relative;z-index:1;
  max-width:1100px;margin:0 auto;
  padding:0 48px 80px;
}

/* ── SITE FOOTER ─────────────────────────────────────── */
.site-footer{
  position:relative;z-index:1;
  border-top:1px solid var(--bdr);
  padding:32px 48px;
  display:flex;align-items:center;justify-content:space-between;
  max-width:1100px;margin:0 auto;
}
.site-footer-left{font-family:var(--mono);font-size:11px;color:var(--tx3)}
.site-footer-right{display:flex;gap:20px}
.site-footer-right a{font-size:12px;color:var(--tx3);text-decoration:none;transition:color .14s}
.site-footer-right a:hover{color:var(--tx2)}

/* ── PRIVACY POLICY STYLES ───────────────────────────── */
.pp-hdr{margin-bottom:44px;padding-bottom:28px;border-bottom:1px solid var(--bdr)}
.pp-hdr-top{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.pp-icon{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;flex-shrink:0;
}
.pp-hdr h1{
  font-family:var(--display);font-size:32px;font-weight:800;
  color:var(--tx);letter-spacing:-.03em;line-height:1.1;
}
.pp-meta{
  display:flex;flex-wrap:wrap;gap:4px 14px;
  font-family:var(--mono);font-size:11px;color:var(--tx3);
  margin-bottom:20px;
}
.pp-meta a{color:var(--tx3);text-decoration:none}
.pp-meta a:hover{color:var(--tx2)}
.pp-summary{
  background:var(--bg2);
  border:1px solid var(--bdr2);
  border-left:3px solid var(--accent,var(--gold));
  border-radius:0 var(--r2) var(--r2) 0;
  padding:14px 18px;
  font-size:13.5px;color:var(--tx2);line-height:1.7;
}
.pp-summary strong{color:var(--tx)}

.pp-section{margin-bottom:36px}
.pp-section h2{
  font-family:var(--display);font-size:16px;font-weight:700;
  color:var(--tx);margin-bottom:12px;
  display:flex;align-items:center;gap:9px;
}
.pp-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:22px;border-radius:50%;
  background:var(--bg3);border:1px solid var(--bdr2);
  font-family:var(--mono);font-size:9.5px;font-weight:500;
  color:var(--accent,var(--gold));flex-shrink:0;
}
.pp-section p{font-size:13.5px;color:var(--tx2);margin-bottom:10px;line-height:1.75}
.pp-section p:last-child{margin-bottom:0}
.pp-section ul{list-style:none;display:flex;flex-direction:column;gap:7px;margin:8px 0}
.pp-section li{
  font-size:13.5px;color:var(--tx2);
  padding-left:14px;position:relative;line-height:1.65;
}
.pp-section li::before{
  content:'–';position:absolute;left:0;
  color:var(--accent,var(--gold));font-weight:600;
}
.pp-section li strong{color:var(--tx)}
.pp-section a{color:var(--accent,var(--gold));text-decoration:none}
.pp-section a:hover{text-decoration:underline}
code{
  font-family:var(--mono);font-size:11.5px;
  background:var(--bg3);border:1px solid var(--bdr2);
  padding:1px 5px;border-radius:3px;color:var(--tx2);
}
.pp-contact{
  background:var(--bg2);border:1px solid var(--bdr2);
  border-radius:var(--r2);padding:18px 22px;
  display:flex;flex-direction:column;gap:5px;
}
.pp-contact strong{color:var(--tx);font-size:14px;font-family:var(--display)}
.pp-contact a{font-size:13px;color:var(--accent,var(--gold))}
.pp-doc-footer{
  margin-top:48px;padding-top:20px;
  border-top:1px solid var(--bdr);
  font-family:var(--mono);font-size:11px;color:var(--tx3);text-align:center;
}

/* ── ABOUT / PRICING SHARED ──────────────────────────── */
.ext-page-hero{
  padding:60px 0 40px;
  border-bottom:1px solid var(--bdr);
  margin-bottom:48px;
}
.ext-page-eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  font-family:var(--mono);font-size:10px;
  letter-spacing:.14em;text-transform:uppercase;
  padding:3px 9px 3px 5px;
  border-radius:20px;margin-bottom:18px;
  border:1px solid rgba(255,255,255,.06);
  background:var(--bg3);color:var(--tx3);
}
.ext-page-eyebrow-dot{width:5px;height:5px;border-radius:50%;background:var(--teal);
  animation:pls 2s ease-in-out infinite}
@keyframes pls{0%,100%{opacity:1}50%{opacity:.2}}
.ext-page-hero h1{
  font-family:var(--display);
  font-size:clamp(28px,5vw,48px);
  font-weight:800;color:var(--tx);
  letter-spacing:-.03em;line-height:1.08;
  margin-bottom:14px;
}
.ext-page-hero p{
  font-size:15px;color:var(--tx2);
  max-width:480px;line-height:1.7;font-weight:300;
}

/* ── MISC UTILITIES ──────────────────────────────────── */
.badge{
  display:inline-flex;align-items:center;gap:5px;
  font-family:var(--mono);font-size:9px;font-weight:500;
  letter-spacing:.1em;text-transform:uppercase;
  padding:2px 8px;border-radius:20px;
}
.badge-live{color:var(--teal);background:var(--teald);border:1px solid rgba(0,229,176,.2)}
.badge-soon{color:var(--tx3);background:var(--bg3);border:1px solid var(--bdr)}
.badge-dot{width:4px;height:4px;border-radius:50%;background:currentColor}
.badge-live .badge-dot{animation:pls 2s ease-in-out infinite}

@media(max-width:768px){
  .site-nav,.sub-nav{padding-left:18px;padding-right:18px}
  .page-wrap,.page-wrap-wide{padding-left:18px;padding-right:18px}
  .page-wrap{padding-top:36px}
  .site-footer{padding:24px 18px;flex-direction:column;gap:14px;text-align:center}
  .sub-nav-tabs{display:none}
  .pp-hdr h1{font-size:26px}
}