:root{
  --bg:#0a0a0f; --bg-2:#101019; --text:#ffffff; --muted:#cfd0d8; --border:#262637;
  --primary:#111; --primary-cta:#0ea5e9; --primary-cta-2:#38bdf8; --shadow:0 20px 50px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,sans-serif;color:var(--text);background:var(--bg)}
.container{width:min(1100px,92%);margin:0 auto}

/* Nav */
.nav{position:sticky;top:0;background:linear-gradient(180deg, rgba(10,10,15,.9), rgba(10,10,15,.6) 60%, rgba(10,10,15,0));backdrop-filter:saturate(150%) blur(8px);z-index:20}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;position:relative}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.12em;text-decoration:none;color:var(--text)}
.brand img{height:22px}
.links{position:absolute;top:58px;right:0;background:rgba(16,16,25,.98);border:1px solid var(--border);border-radius:12px;padding:10px;display:none;flex-direction:column;gap:10px;min-width:200px;box-shadow:var(--shadow);opacity:0;transform:translateY(-6px);transition:opacity .15s ease, transform .15s ease}
.links.open{display:flex;opacity:1;transform:translateY(0)}
.links a{color:var(--text);text-decoration:none;font-weight:600;opacity:.95;padding:8px 10px;border-radius:8px}
.links a:hover{background:rgba(255,255,255,.06)}
.links hr{border:0;border-top:1px solid var(--border);margin:6px 0}
.hamburger{display:inline-flex;background:none;border:0;color:#fff;font-size:22px;line-height:1;padding:6px 8px;border-radius:8px}
.hamburger:focus{outline:2px solid var(--primary-cta)}

/* Hero */
.hero{position:relative;min-height:70vh;display:flex;align-items:center;background:url('https://images.unsplash.com/photo-1483728642387-6c3bdd6c93e5?q=80&w=1600&auto=format&fit=crop') center/cover no-repeat}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg, rgba(10,10,15,.7), rgba(10,10,15,.45))}
.hero-content{position:relative;z-index:1;padding:90px 0}
.hero h1{font-size: clamp(36px, 6vw, 72px);line-height:1.05;margin:0 0 12px;font-weight:800;letter-spacing:.04em}
.lead{font-size: clamp(16px, 2.2vw, 22px);color:var(--muted);max-width:820px}
.cta-row{margin-top:24px;display:flex;gap:14px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:10px;border:1px solid var(--border);text-decoration:none;color:var(--text);font-weight:700}
.btn-primary{background:linear-gradient(135deg, var(--primary-cta), var(--primary-cta-2));border:0;box-shadow:var(--shadow)}
.btn-outline{background:transparent}
.version{color:#e6e6ee;opacity:.9;font-weight:600}

/* Sections */
.section{padding:60px 0;background:var(--bg)}
.section.alt{background:var(--bg-2)}
.two-col{display:grid;grid-template-columns:1.1fr .9fr;gap:30px}
.card{border:1px solid var(--border);background:rgba(255,255,255,.02);border-radius:14px;padding:20px}
.features{margin:0;padding-left:18px}
.features li{margin:10px 0}

/* Forms */
.form{display:grid;grid-template-columns:1fr;gap:12px;margin-top:12px;max-width:560px}
.input{position:relative}
.input input,.input textarea{width:100%;padding:14px 14px 16px;border-radius:12px;border:1px solid var(--border);background:rgba(255,255,255,.035);color:var(--text);transition:border-color .15s ease, background .15s ease}
.input textarea{min-height:120px;resize:vertical}
.input input:focus,.input textarea:focus{border-color:var(--primary-cta);background:rgba(255,255,255,.05);outline:none}
.input label{position:absolute;left:12px;top:-8px;padding:0 6px;background:var(--bg);font-size:12px;color:var(--muted);border-radius:6px}
.status{margin-top:10px;color:var(--muted)}
.status{margin-top:10px;color:var(--muted)}

/* Footer */
.footer{border-top:1px solid var(--border);padding:18px 0;background:var(--bg)}
.footer-inner{display:flex;align-items:center;justify-content:space-between;color:var(--muted)}

/* Page layouts */
.page{padding-top:60px}
.page .header{margin-bottom:8px}
.page .header h1{margin:0 0 8px}
.page .lead{max-width:760px}

@media (max-width: 860px){
  .links{display:none}
  .hamburger{display:block}
  .two-col{grid-template-columns:1fr}
}

/* Disabled button visuals (tied to aria-disabled="true") */
.btn[aria-disabled="true"]{
  opacity:.55;
  cursor:not-allowed;
  filter:grayscale(25%);
}
.btn-primary[aria-disabled="true"]{
  box-shadow:none;
}