/* ================================================================
   SilentConsensus™ — Marketing Site (Dark Theme)
   Palette: Navy #1B3A5C / Teal #1A7A6D / Dark backgrounds
   Fonts: DM Serif Display (headings) + Outfit (body)
   ================================================================ */
@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=Outfit:wght@300;400;500;600;700&display=swap');

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

:root{
  --teal:#1A7A6D;--teal-light:#22A090;--teal-bright:#2BBFAB;
  --teal-muted:rgba(26,122,109,0.12);
  --navy:#1B3A5C;--navy-dark:#0F2440;--navy-light:#2A5280;
  --bg-deep:#0A0F18;--bg-primary:#0E1620;--bg-elevated:#141E2C;
  --bg-card:#182436;--bg-card-hover:#1E2E44;
  --text-primary:#D8E2EC;--text-secondary:#8A9BB2;
  --text-muted:#5A6B7F;--text-bright:#EEF2F7;
  --border:rgba(42,82,128,0.25);--border-light:rgba(42,82,128,0.15);
  --shadow-md:0 4px 16px rgba(0,0,0,0.25);--shadow-lg:0 12px 40px rgba(0,0,0,0.35);
  --font-heading:'DM Serif Display',Georgia,serif;
  --font-body:'Outfit',-apple-system,sans-serif;
}

html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-body);font-weight:400;color:var(--text-primary);background:var(--bg-deep);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}
a{color:var(--teal-bright);text-decoration:none;transition:color .2s}
a:hover{color:var(--teal-light)}
img{max-width:100%;height:auto;display:block}

/* ---- NAV (80px tall, 78px logo) ---- */
.site-nav{position:fixed;top:0;left:0;right:0;z-index:100;background:var(--bg-primary);box-shadow:0 1px 8px rgba(0,0,0,.3);padding:0 2rem;height:80px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;border-bottom:1px solid var(--border-light)}
.nav-logo img{height:78px;width:auto}
.nav-links{display:flex;gap:.15rem;align-items:center;justify-content:center}
.nav-links a{color:var(--text-secondary);font-family:var(--font-body);font-weight:600;font-size:.85rem;letter-spacing:.05em;text-transform:uppercase;padding:.5rem .85rem;border-radius:6px;transition:all .2s}
.nav-links a:hover{color:var(--teal-bright);background:var(--teal-muted)}
.nav-links a.active{color:var(--teal-bright);background:rgba(26,122,109,.18)}
.nav-toggle{display:none;background:none;border:none;color:var(--text-secondary);font-size:1.5rem;cursor:pointer;padding:.25rem}
.nav-patent{font-size:.62rem;color:var(--text-muted);letter-spacing:.04em;text-transform:uppercase;white-space:nowrap;text-align:right;line-height:1.3}

/* ---- HOME HERO (0.35 opacity bg) ---- */
.hero{min-height:72vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:7rem 2rem 3rem;position:relative;overflow:hidden;background:linear-gradient(165deg,#060A12 0%,var(--bg-deep) 40%,var(--navy-dark) 100%)}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 20% 80%,rgba(26,122,109,.12) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(26,122,109,.08) 0%,transparent 40%);pointer-events:none}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center 30%;opacity:0.35;pointer-events:none}
.hero h1{font-family:var(--font-heading);font-weight:400;font-size:clamp(2.4rem,5vw,3.6rem);line-height:1.15;color:var(--text-bright);margin-bottom:1rem;animation:fadeSlideUp .7s ease-out;position:relative;max-width:750px}
.hero h1 span{color:var(--teal-bright)}
.hero .subline{font-size:clamp(1rem,2vw,1.2rem);color:var(--text-secondary);max-width:580px;margin-bottom:2rem;position:relative;animation:fadeSlideUp .8s ease-out .1s both}
.hero .btn-cta{display:inline-block;background:var(--teal);color:var(--text-bright);padding:.85rem 2.2rem;border-radius:6px;font-weight:600;font-size:.95rem;letter-spacing:.03em;transition:all .3s;position:relative;animation:fadeSlideUp .9s ease-out .2s both}
.hero .btn-cta:hover{background:var(--teal-light);transform:translateY(-1px)}

/* ---- PAGE HERO (inner pages) ---- */
.page-hero{padding:7.5rem 2rem 2rem;text-align:center;background:linear-gradient(170deg,#060A12 0%,var(--navy-dark) 100%)}
.page-hero h1{font-family:var(--font-heading);font-weight:400;font-size:clamp(2rem,4vw,2.8rem);color:var(--text-bright);margin-bottom:.5rem}
.page-hero .subline{font-size:1rem;color:var(--text-secondary);font-style:italic}

/* ---- SECTIONS ---- */
.section{padding:4rem 2rem}
.section-alt{background:var(--bg-primary)}
.section-base{background:var(--bg-deep)}
.container{max-width:1080px;margin:0 auto}
.section-title{font-family:var(--font-heading);font-weight:400;font-size:clamp(1.6rem,3vw,2.2rem);color:var(--text-bright);text-align:center;margin-bottom:.75rem}
.section-subtitle{text-align:center;color:var(--text-secondary);font-size:1rem;max-width:600px;margin:0 auto 2.5rem}

/* ---- FEATURES GRID ---- */
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.feature-card{background:var(--bg-card);border-radius:10px;padding:2rem 1.5rem;box-shadow:var(--shadow-md);border:1px solid var(--border);transition:transform .3s,box-shadow .3s,background .3s}
.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);background:var(--bg-card-hover)}
.feature-icon{width:48px;height:48px;border-radius:10px;background:var(--teal-muted);display:flex;align-items:center;justify-content:center;margin-bottom:1.2rem;font-size:1.4rem;color:var(--teal-bright)}
.feature-card h3{font-family:var(--font-heading);font-weight:400;font-size:1.2rem;color:var(--text-bright);margin-bottom:.5rem}
.feature-card p{font-size:.92rem;color:var(--text-secondary);line-height:1.65}

/* ---- STEPS ---- */
.step-item{display:flex;gap:1.5rem;margin-bottom:2.5rem;align-items:flex-start}
.step-number{flex-shrink:0;width:48px;height:48px;border-radius:50%;background:var(--teal);color:var(--text-bright);display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-size:1.3rem}
.step-content h3{font-family:var(--font-heading);font-weight:400;font-size:1.15rem;color:var(--text-bright);margin-bottom:.35rem}
.step-content p{font-size:.92rem;color:var(--text-secondary)}

/* ---- CTA BANNER ---- */
.cta-banner{background:linear-gradient(135deg,var(--navy) 0%,var(--navy-dark) 100%);padding:3.5rem 2rem;text-align:center;border-top:1px solid var(--border-light);border-bottom:1px solid var(--border-light)}
.cta-banner h2{font-family:var(--font-heading);font-weight:400;font-size:clamp(1.5rem,3vw,2rem);color:var(--text-bright);margin-bottom:.75rem}
.cta-banner p{color:var(--text-secondary);margin-bottom:1.5rem;max-width:500px;margin-left:auto;margin-right:auto}
.cta-banner .btn-cta{display:inline-block;background:var(--teal);color:var(--text-bright);padding:.8rem 2rem;border-radius:6px;font-weight:600;font-size:.9rem;transition:all .3s}
.cta-banner .btn-cta:hover{background:var(--teal-light)}

/* ---- LEGAL WRAP ---- */
.legal-wrap{max-width:800px;margin:0 auto;padding:2rem 2rem 4rem}
.legal-wrap .legal-date{color:var(--text-muted);font-size:.85rem;font-style:italic;margin-bottom:2rem}
.legal-wrap h2{font-family:var(--font-heading);font-weight:400;font-size:1.4rem;color:var(--text-bright);margin:2rem 0 .75rem;padding-top:1rem;border-top:1px solid var(--border-light)}
.legal-wrap h2:first-of-type{border-top:none;margin-top:0;padding-top:0}
.legal-wrap p{color:var(--text-primary);font-size:.95rem;line-height:1.7;margin-bottom:.75rem}
.legal-wrap strong{color:var(--text-bright)}

/* ---- CONTACT FORM ---- */
.contact-wrap{max-width:600px;margin:0 auto;padding:2rem 2rem 4rem}
.contact-wrap p{color:var(--text-secondary);margin-bottom:1.5rem;text-align:center}
.form-group{margin-bottom:1.25rem}
.form-group label{display:block;font-size:.85rem;font-weight:600;color:var(--text-bright);margin-bottom:.35rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:.7rem .9rem;border:1px solid var(--border);border-radius:6px;font-family:var(--font-body);font-size:.92rem;color:var(--text-primary);background:var(--bg-elevated);transition:border-color .2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--teal-bright)}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}
.form-group textarea{min-height:120px;resize:vertical}
.form-group select option{background:var(--bg-elevated);color:var(--text-primary)}
.btn-submit{display:inline-block;background:var(--teal);color:var(--text-bright);padding:.8rem 2rem;border:none;border-radius:6px;font-family:var(--font-body);font-weight:600;font-size:.92rem;cursor:pointer;transition:all .3s;width:100%}
.btn-submit:hover{background:var(--teal-light)}

/* ---- FOOTER (72px logo, no tagline) ---- */
.site-footer{background:var(--bg-primary);padding:2.5rem 2rem 1.5rem;text-align:center;border-top:1px solid var(--border-light)}
.footer-brand{display:flex;align-items:center;justify-content:center;margin-bottom:.75rem}
.footer-brand img{height:72px;width:auto}
.footer-copy{color:var(--text-muted);font-size:.72rem;margin-bottom:.5rem}
.footer-copy a{color:var(--text-muted);text-decoration:underline}
.footer-copy a:hover{color:var(--teal-bright)}
.footer-legal{color:var(--text-muted);font-size:.65rem;letter-spacing:.03em;margin-top:.5rem;line-height:1.5}

/* ---- ANIMATIONS ---- */
@keyframes fadeSlideUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* ---- RESPONSIVE ---- */
@media(max-width:900px){.features-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){
  .nav-links{display:none}
  .nav-links.open{display:flex;flex-direction:column;position:absolute;top:80px;left:0;right:0;background:var(--bg-primary);box-shadow:0 4px 12px rgba(0,0,0,.3);padding:.75rem;gap:.15rem;border-bottom:1px solid var(--border-light)}
  .nav-toggle{display:block}
  .nav-patent{display:none}
  .nav-logo img{height:52px}
  .site-nav{height:64px}
  .hero{min-height:60vh;padding-top:5.5rem}
  .page-hero{padding-top:5.5rem}
  .features-grid{grid-template-columns:1fr}
  .legal-wrap,.contact-wrap{padding:1.5rem 1.25rem 3rem}
  .step-item{flex-direction:column;gap:.75rem}
}