/* Base styles */
:root{
  --bg:#0f172a; /* slate-900 */
  --panel:#111827; /* gray-900 */
  --card:#111827;
  --text:#e5e7eb; /* gray-200 */
  --muted:#9ca3af; /* gray-400 */
  --brand:#22c55e; /* green-500 */
  --brand-700:#15803d; /* green-700 */
  --accent:#38bdf8; /* sky-400 */
  --danger:#ef4444; /* red-500 */
  --shadow: 0 10px 25px rgba(0,0,0,.35);
  --radius: 14px;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 80% -10%, rgba(56,189,248,.12), transparent 60%),
              radial-gradient(900px 600px at -10% 20%, rgba(34,197,94,.12), transparent 50%),
              var(--bg);
  color:var(--text);
}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.section-title{font-size:2rem;margin:0 0 10px}

/* Header */
.site-header{position:sticky;top:0;background:rgba(15,23,42,.7);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.06);z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.logo{font-weight:700;letter-spacing:.4px;color:#fff;text-decoration:none;font-size:1.2rem}
.logo span{color:var(--brand)}
.nav a{color:#e5e7eb;text-decoration:none;margin:0 10px;padding:8px 10px;border-radius:10px;transition:.2s}
.nav a:hover{background:rgba(255,255,255,.06)}
.nav .btn{margin-left:10px}
.nav .active{color:#fff}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);color:#fff;text-decoration:none;cursor:pointer;transition:.2s;box-shadow:0 2px 0 rgba(0,0,0,.2) inset}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-sm{padding:8px 12px;font-size:.9rem}
.btn-primary{background:linear-gradient(135deg,var(--brand),#34d399);border:0;color:#032408}
.btn-ghost{background:transparent;border:1px solid rgba(255,255,255,.16)}
.btn-danger{background:linear-gradient(135deg,var(--danger),#f87171);border:0}

/* Hero */
.hero{position:relative;padding:64px 0 40px}
.hero-inner{display:grid;grid-template-columns:1.4fr .8fr;gap:24px;align-items:center}
.hero-text h1{font-size:2.6rem;margin:0 0 8px}
.hero-text p{color:var(--muted);margin:0 0 16px}
.cta-group{display:flex;gap:12px;flex-wrap:wrap}
.hero-card{background:linear-gradient(180deg, rgba(56,189,248,.12), rgba(34,197,94,.12));border:1px solid rgba(255,255,255,.12);padding:18px 18px;border-radius:var(--radius)}
.hero-wave{position:absolute;inset:auto 0 0 0;height:70px;background:linear-gradient(180deg,rgba(0,0,0,0),rgba(255,255,255,.04));mask: radial-gradient(120px 60px at 10% 10%, #000 99%, transparent), radial-gradient(160px 60px at 40% 40%, #000 99%, transparent), radial-gradient(120px 60px at 70% 10%, #000 99%, transparent), linear-gradient(#000,#000)}

/* Cards */
.features .grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:rgba(17,24,39,.7);border:1px solid rgba(255,255,255,.08);padding:18px;border-radius:var(--radius);text-decoration:none;color:inherit;transition:.2s;position:relative}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(255,255,255,.18)}
.card .icon{font-size:26px}
.card h3{margin:8px 0 6px}
.card p{color:var(--muted);margin:0 0 10px}
.card .link{color:#a7f3d0}

/* Newsletter */
.newsletter{margin:28px 0 48px}
.newsletter-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;background:linear-gradient(180deg, rgba(56,189,248,.10), rgba(34,197,94,.10));border:1px solid rgba(255,255,255,.12);padding:18px 18px;border-radius:var(--radius)}
.newsletter-form{display:flex;gap:10px}
.newsletter-form input{padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(0,0,0,.2);color:#fff;min-width:240px}
.form-feedback{display:block;margin-top:6px;color:var(--muted)}

/* Footer */
.site-footer{border-top:1px solid rgba(255,255,255,.06);padding:26px 0;background:rgba(0,0,0,.2)}
.footer-inner{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}
.footer-links a{color:var(--muted);text-decoration:none;margin-right:12px}
.footer-links a:hover{color:#fff}

/* Layout helpers */
.page{padding:24px 0}
.page .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
.panel{background:rgba(17,24,39,.7);border:1px solid rgba(255,255,255,.08);padding:18px;border-radius:var(--radius)}
.panel h2{margin:0 0 8px}
.panel p{color:var(--muted)}

/* Forms */
label{display:block;margin:12px 0 6px}
input, select{width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(255,255,255,.16);background:rgba(0,0,0,.2);color:#fff}
.help{font-size:.9rem;color:var(--muted)}
.result{padding:14px;border-radius:12px;background:rgba(34,197,94,.08);border:1px solid rgba(34,197,94,.25);margin-top:12px}

/* Responsive */
@media (max-width: 900px){
  .hero-inner{grid-template-columns:1fr}
  .features .grid{grid-template-columns:1fr}
  .page .grid{grid-template-columns:1fr}
}