/* ============================================================
   TrustTails — Design System v1
   Premium "trust" system: deep navy + gold, cyan reserved for
   the logo + network accents. Clean, credible, high-converting.
   ============================================================ */

/* ---------- Tokens ---------- */
:root{
  /* surfaces */
  --bg:        #060B16;
  --bg-2:      #0A1322;
  --bg-3:      #0E1B30;
  --surface:   rgba(255,255,255,.035);
  --surface-2: rgba(255,255,255,.06);
  --border:    rgba(255,255,255,.09);
  --border-2:  rgba(255,255,255,.14);

  /* brand */
  --gold:      #F2B736;   /* primary accent — trust / value */
  --gold-2:    #FFD679;
  --gold-deep: #C8911E;
  --cyan:      #45E6FF;   /* logo lineage — network / tech */
  --cyan-2:    #8AF1FF;
  --violet:    #8B5CF6;   /* sparing tech highlight */
  --green:     #34D399;   /* verified / success */

  /* text */
  --text:   #EEF3FB;
  --muted:  #9DB0CC;
  --faint:  #6F829E;

  /* gradients */
  --grad-gold: linear-gradient(135deg,#FFD679 0%,#F2B736 45%,#C8911E 100%);
  --grad-hero: radial-gradient(120% 90% at 50% -10%, #12243f 0%, #0A1322 45%, #060B16 100%);
  --glow-gold: 0 0 40px rgba(242,183,54,.28);
  --glow-cyan: 0 0 40px rgba(69,230,255,.22);

  /* type */
  --font-display: "Space Grotesk", -apple-system, system-ui, sans-serif;
  --font-body:    "Inter", -apple-system, system-ui, sans-serif;
  --font-mono:    "Orbitron", ui-monospace, monospace;

  /* layout */
  --maxw: 1180px;
  --radius: 18px;
  --radius-sm: 12px;
  --ease: cubic-bezier(.22,.61,.36,1);
  --nav-h: 72px;
}

/* ---------- Reset / base ---------- */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--font-body);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  letter-spacing:.1px;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
::selection{background:rgba(242,183,54,.28);color:#fff}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.08;letter-spacing:-.02em}
h1{font-size:clamp(2.4rem,6vw,4.6rem)}
h2{font-size:clamp(1.9rem,3.6vw,2.9rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.45rem)}
p{color:var(--muted)}

/* ---------- Layout ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:24px}
.section{padding:clamp(64px,9vw,128px) 0;position:relative}
.section--tight{padding:clamp(48px,6vw,80px) 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.72rem;font-weight:600;
  letter-spacing:.22em;text-transform:uppercase;color:var(--gold);
  padding:7px 14px;border:1px solid var(--border-2);border-radius:100px;
  background:var(--surface);
}
.section-head{max-width:680px;margin-bottom:52px}
.section-head.center{margin-inline:auto;text-align:center}
.section-head p{margin-top:16px;font-size:1.08rem}
.lead{font-size:clamp(1.05rem,1.5vw,1.2rem);color:var(--muted)}
.text-gold{color:var(--gold)}
.text-cyan{color:var(--cyan)}
.text-grad{background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--font-display);font-weight:600;font-size:.98rem;
  padding:15px 26px;border-radius:100px;cursor:pointer;border:1px solid transparent;
  transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease),border-color .25s var(--ease);
  white-space:nowrap;
}
.btn svg{width:18px;height:18px}
.btn-gold{background:var(--grad-gold);color:#1A1206;box-shadow:var(--glow-gold)}
.btn-gold:hover{transform:translateY(-2px);box-shadow:0 14px 40px rgba(242,183,54,.4)}
.btn-ghost{background:var(--surface);border-color:var(--border-2);color:var(--text)}
.btn-ghost:hover{transform:translateY(-2px);border-color:var(--gold);color:var(--gold);background:var(--surface-2)}
.btn-cyan{background:rgba(69,230,255,.1);border-color:rgba(69,230,255,.35);color:var(--cyan-2)}
.btn-cyan:hover{transform:translateY(-2px);box-shadow:var(--glow-cyan);border-color:var(--cyan)}
.btn-sm{padding:10px 18px;font-size:.86rem}

/* ---------- Nav ---------- */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-h);
  display:flex;align-items:center;
  transition:background .3s var(--ease),border-color .3s var(--ease),backdrop-filter .3s;
  border-bottom:1px solid transparent;
}
.nav.scrolled{
  background:rgba(8,14,26,.72);backdrop-filter:blur(18px) saturate(160%);
  border-bottom-color:var(--border);
}
.nav .container{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:11px;font-family:var(--font-display);font-weight:600;font-size:1.12rem}
.brand img{width:34px;height:auto;filter:drop-shadow(0 0 10px rgba(69,230,255,.5))}
.brand b{color:var(--text)}.brand span{color:var(--gold)}
.nav-links{display:flex;align-items:center;gap:28px}
.nav-links a{font-size:.93rem;color:var(--muted);font-weight:500;position:relative}
.nav-links a:hover{color:var(--text)}
.nav-links a::after{content:"";position:absolute;left:0;bottom:-6px;width:0;height:2px;background:var(--grad-gold);transition:width .25s var(--ease)}
.nav-links a:hover::after{width:100%}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;background:none;border:0;color:var(--text);cursor:pointer;padding:8px}
.nav-toggle svg{width:26px;height:26px}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;background:var(--grad-hero);overflow:hidden;padding-top:var(--nav-h)}
#hero-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.85}
.hero::after{content:"";position:absolute;inset:0;z-index:1;background:radial-gradient(60% 50% at 50% 40%,transparent,var(--bg) 95%);pointer-events:none}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding-block:60px}
.hero-copy{max-width:620px}
.hero h1{margin:22px 0 20px}
.hero h1 .text-grad{display:block}
.hero-sub{font-size:clamp(1.05rem,1.6vw,1.28rem);color:var(--muted);max-width:540px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:34px 0 30px}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.hero-logo{width:min(86%,420px);filter:drop-shadow(0 0 60px rgba(69,230,255,.35));animation:float 7s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(-10px)}50%{transform:translateY(10px)}}

/* verified fact chips */
.fact-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.chip{
  display:inline-flex;align-items:center;gap:8px;font-size:.82rem;font-weight:500;
  padding:8px 14px;border-radius:100px;background:var(--surface);border:1px solid var(--border-2);
  color:var(--text);transition:border-color .2s,transform .2s
}
.chip:hover{border-color:var(--green);transform:translateY(-2px)}
.chip svg{width:15px;height:15px;color:var(--green)}

/* contract pill */
.contract-pill{
  display:inline-flex;align-items:center;gap:12px;margin-top:22px;max-width:100%;
  padding:11px 12px 11px 18px;border-radius:100px;background:rgba(0,0,0,.3);border:1px solid var(--border-2);
}
.contract-pill .lbl{font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);font-family:var(--font-mono)}
.contract-pill code{font-family:var(--font-mono);font-size:.8rem;color:var(--cyan-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:min(46vw,340px)}
.copy-btn{flex-shrink:0;display:inline-flex;align-items:center;gap:6px;background:var(--surface-2);border:1px solid var(--border-2);color:var(--text);border-radius:100px;padding:7px 13px;font-size:.78rem;cursor:pointer;font-weight:600;transition:all .2s}
.copy-btn:hover{border-color:var(--gold);color:var(--gold)}
.copy-btn.copied{border-color:var(--green);color:var(--green)}

/* ---------- Marquee ---------- */
.marquee{border-block:1px solid var(--border);background:var(--bg-2);overflow:hidden;padding:18px 0}
.marquee-track{display:flex;gap:40px;width:max-content;animation:scroll 30s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee-item{display:inline-flex;align-items:center;gap:12px;font-family:var(--font-display);font-weight:500;color:var(--muted);font-size:1rem;white-space:nowrap}
.marquee-item b{color:var(--gold)}
.marquee-item .dot{width:5px;height:5px;border-radius:50%;background:var(--gold);opacity:.6}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.glass{
  position:relative;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:30px;transition:transform .3s var(--ease),border-color .3s,background .3s;
  overflow:hidden;
}
.glass::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:linear-gradient(135deg,rgba(242,183,54,.35),transparent 40%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .3s}
.glass:hover{transform:translateY(-5px);border-color:var(--border-2);background:var(--surface-2)}
.glass:hover::before{opacity:1}
.glass .icon{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;background:rgba(242,183,54,.1);border:1px solid rgba(242,183,54,.25);margin-bottom:18px}
.glass .icon svg{width:22px;height:22px;color:var(--gold)}
.glass h3{margin-bottom:10px}
.glass p{font-size:.95rem}
.glass.cyan .icon{background:rgba(69,230,255,.08);border-color:rgba(69,230,255,.25)}
.glass.cyan .icon svg{color:var(--cyan)}

/* stat tiles */
.stat{text-align:center;padding:28px 18px}
.stat .num{font-family:var(--font-mono);font-size:clamp(1.8rem,3vw,2.6rem);font-weight:700;color:var(--text);line-height:1}
.stat .num.gold{color:var(--gold)}
.stat .lbl{margin-top:10px;font-size:.82rem;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}

/* ---------- Proof section ---------- */
.proof-split{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.do-dont{border-radius:var(--radius);padding:28px;border:1px solid var(--border)}
.do-dont h3{display:flex;align-items:center;gap:10px;margin-bottom:18px;font-size:1.05rem}
.do-dont ul{list-style:none;display:grid;gap:14px}
.do-dont li{display:flex;gap:12px;font-size:.95rem;color:var(--muted)}
.do-dont li svg{width:18px;height:18px;flex-shrink:0;margin-top:3px}
.do-dont.is-do{background:rgba(52,211,153,.05)}
.do-dont.is-do h3{color:var(--green)} .do-dont.is-do li svg{color:var(--green)}
.do-dont.is-dont{background:rgba(255,255,255,.02)}
.do-dont.is-dont h3{color:var(--muted)} .do-dont.is-dont li svg{color:var(--faint)}

/* ---------- Roadmap ---------- */
.timeline{display:grid;gap:0;position:relative}
.tl-item{display:grid;grid-template-columns:auto 1fr;gap:26px;padding-bottom:36px;position:relative}
.tl-rail{display:flex;flex-direction:column;align-items:center}
.tl-dot{width:18px;height:18px;border-radius:50%;background:var(--bg);border:3px solid var(--gold);box-shadow:var(--glow-gold);flex-shrink:0;z-index:2}
.tl-item.future .tl-dot{border-color:var(--faint);box-shadow:none}
.tl-line{width:2px;flex:1;background:linear-gradient(var(--gold),var(--border));margin-top:4px}
.tl-item:last-child .tl-line{display:none}
.tl-body{padding-bottom:8px}
.tl-status{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;padding:4px 11px;border-radius:100px;border:1px solid var(--border-2);color:var(--muted);display:inline-block;margin-bottom:12px}
.tl-status.live{color:var(--green);border-color:rgba(52,211,153,.4);background:rgba(52,211,153,.07)}
.tl-body h3{margin-bottom:8px}
.tl-body ul{list-style:none;margin-top:12px;display:grid;gap:7px}
.tl-body li{font-size:.92rem;color:var(--muted);padding-left:20px;position:relative}
.tl-body li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--gold);opacity:.7}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:14px;max-width:820px;margin-inline:auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);overflow:hidden;transition:border-color .25s}
.faq-item[open]{border-color:var(--border-2)}
.faq-item summary{list-style:none;cursor:pointer;padding:22px 24px;display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:var(--font-display);font-weight:600;font-size:1.04rem}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{flex-shrink:0;width:24px;height:24px;position:relative;transition:transform .3s}
.faq-item[open] summary .plus{transform:rotate(45deg)}
.faq-item summary .plus::before,.faq-item summary .plus::after{content:"";position:absolute;inset:50% 0;height:2px;background:var(--gold);top:11px}
.faq-item summary .plus::after{transform:rotate(90deg)}
.faq-item .faq-a{padding:0 24px 22px;color:var(--muted);font-size:.97rem}

/* ---------- CTA band ---------- */
.cta-band{position:relative;border-radius:var(--radius);padding:clamp(40px,6vw,72px);text-align:center;overflow:hidden;border:1px solid var(--border-2);background:linear-gradient(135deg,rgba(242,183,54,.1),rgba(69,230,255,.05))}
.cta-band h2{margin-bottom:14px}
.cta-band p{max-width:560px;margin:0 auto 28px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ---------- Footer ---------- */
.footer{background:var(--bg-2);border-top:1px solid var(--border);padding:64px 0 32px}
.footer-grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:32px;margin-bottom:44px}
.footer-brand p{font-size:.92rem;margin-top:16px;max-width:300px}
.footer-col h4{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-bottom:16px;font-family:var(--font-mono)}
.footer-col a{display:block;color:var(--muted);font-size:.94rem;padding:6px 0}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid var(--border);padding-top:26px;display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}
.footer-bottom p{font-size:.85rem;color:var(--faint)}
.disclaimer{margin-top:20px;font-size:.8rem;color:var(--faint);max-width:900px;line-height:1.7}
.socials{display:flex;gap:12px}
.socials a{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:var(--surface);border:1px solid var(--border);transition:all .2s}
.socials a:hover{border-color:var(--gold);color:var(--gold);transform:translateY(-2px)}
.socials svg{width:19px;height:19px}

/* ---------- Reveal animations (no-JS / crawler safe: only hidden when html.js) ---------- */
.reveal{transition:opacity .7s var(--ease),transform .7s var(--ease)}
.js .reveal{opacity:0;transform:translateY(28px)}
.js .reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  .hero .container{grid-template-columns:1fr;text-align:center;gap:30px}
  .hero-copy{max-width:none;margin-inline:auto}
  .hero-actions,.fact-chips{justify-content:center}
  .hero-visual{order:-1}
  .hero-logo{width:min(60%,300px)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .proof-split,.footer-grid{grid-template-columns:1fr}
  .footer-grid{gap:32px}
}
@media(max-width:560px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .contract-pill code{max-width:54vw}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
}

/* mobile menu (accordion drawer) */
.mobile-menu{position:fixed;inset:var(--nav-h) 0 0;z-index:99;background:rgba(6,11,22,.98);backdrop-filter:blur(20px);display:none;flex-direction:column;padding:12px 22px 44px;gap:0;overflow-y:auto;-webkit-overflow-scrolling:touch}
.mobile-menu.open{display:flex}
.mm-sec{border-bottom:1px solid var(--border)}
.mm-sec>summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;align-items:center;padding:16px 2px;font-family:var(--font-display);font-size:1.12rem;font-weight:600;color:var(--text)}
.mm-sec>summary::-webkit-details-marker{display:none}
.mm-sec>summary::after{content:"+";color:var(--gold);font-size:1.5rem;line-height:1;font-weight:300}
.mm-sec[open]>summary::after{content:"\2013"}
.mm-links{display:flex;flex-direction:column;padding:2px 2px 14px}
.mm-links a{padding:10px 0;color:var(--muted);font-size:1rem;border:0}
.mm-links a:active,.mm-links a:hover{color:var(--gold)}
.mm-direct{font-family:var(--font-display);font-size:1.12rem;font-weight:600;color:var(--text);padding:16px 2px;border-bottom:1px solid var(--border);display:block}
.mm-direct:active{color:var(--gold)}
.mobile-menu .btn{margin-top:22px;width:100%;justify-content:center}

/* ===== Mega menu (desktop) ===== */
.nav-links{gap:2px}
.nav-group{position:relative}
.nav-top{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-body);font-size:.93rem;font-weight:500;color:var(--muted);background:none;border:0;cursor:pointer;padding:9px 13px;border-radius:9px;transition:color .2s,background .2s}
.nav-top-link{padding:9px 13px;border-radius:9px}
.nav-top:hover,.nav-group:hover .nav-top{color:var(--text);background:var(--surface)}
.nav-top .chev{width:12px;height:12px;opacity:.65;transition:transform .2s}
.nav-group:hover .nav-top .chev{transform:rotate(180deg)}
.nav-group::after{content:"";position:absolute;top:100%;left:0;right:0;height:14px}
.mega{position:absolute;top:calc(100% + 12px);left:0;width:560px;max-width:88vw;background:rgba(10,19,34,.97);backdrop-filter:blur(22px) saturate(160%);border:1px solid var(--border-2);border-radius:18px;box-shadow:0 30px 70px rgba(0,0,0,.55);padding:16px;display:grid;grid-template-columns:1fr 1fr;gap:4px 14px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;z-index:130}
.nav-group:last-of-type .mega{left:auto;right:0}
.nav-group:hover .mega,.nav-group:focus-within .mega{opacity:1;visibility:visible;transform:translateY(0)}
.mega-link{display:flex;gap:11px;padding:9px 11px;border-radius:11px;align-items:flex-start;transition:background .16s}
.mega-link:hover{background:var(--surface-2)}
.mega-link .mi{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;background:rgba(242,183,54,.1);border:1px solid rgba(242,183,54,.22);flex-shrink:0}
.mega-link .mi svg{width:16px;height:16px;color:var(--gold)}
.mega-link b{font-family:var(--font-display);font-weight:600;font-size:.88rem;color:var(--text);display:block}
.mega-link .ms{font-size:.74rem;color:var(--faint);display:block;margin-top:1px;line-height:1.35}
.mega-feature{grid-column:1/-1;margin-top:4px;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 15px;border-radius:12px;background:linear-gradient(135deg,rgba(242,183,54,.12),rgba(69,230,255,.06));border:1px solid var(--border-2)}
.mega-feature b{font-family:var(--font-display);color:var(--text);font-size:.9rem;display:block}
.mega-feature .ms{font-size:.75rem;color:var(--muted)}
.mega-feature .btn{flex-shrink:0}

/* ===== Mobile polish ===== */
@media(max-width:768px){
  .section{padding:clamp(46px,8vw,72px) 0}
  h1{font-size:clamp(2.05rem,8vw,3rem)}
  .hero{min-height:auto;padding-top:calc(var(--nav-h) + 28px);padding-bottom:48px}
  .hero-logo{width:min(54%,236px)}
  .marquee-item{font-size:.9rem}
  .contract-pill{flex-wrap:wrap;justify-content:center}
  .contract-pill code{max-width:76vw}
  .section-head{margin-bottom:34px}
}
@media(max-width:480px){
  .container{padding-inline:18px}
  .glass{padding:22px}
  .hero h1{font-size:2.05rem}
  .hero-sub{font-size:1rem}
  .btn{padding:13px 20px}
  .fact-chips{gap:8px}
  .chip{font-size:.78rem}
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}