/* Minimal, clean, reusable styles */
:root{
  --bg: #0b1220;
  --card:#0f172a;
  --text:#e5e7eb;
  --muted:#a3a3a3;
  --primary:#0ea5e9;
  --ring: rgba(14,165,233,.35);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, Apple Color Emoji, Segoe UI Emoji;
  color:var(--text);
  background: #000000; /* dark/default */
}
.container{
  min-height:100%;
  display:grid;
  place-items:center;
  padding:24px;
}
.card{
  width:min(720px, 92vw);
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01));
  border:1px solid rgba(255,255,255,.08);
  border-radius:24px;
  padding:32px 28px 22px;
  backdrop-filter:saturate(140%) blur(6px);
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.logo{display:flex; align-items:center; gap:10px; margin-bottom:6px}
.logo .dot{width:14px; height:14px; border-radius:50%; background:var(--primary); box-shadow:0 0 0 6px var(--ring)}
.logo .brand{letter-spacing:.4px; font-weight:700; font-size:14px; text-transform:uppercase; color:#cbd5e1}
h1{font-size: clamp(28px, 4vw, 40px); margin:10px 0 8px; line-height:1.1}
.sub{color:var(--muted); margin:0 0 22px}
.cta-row{display:flex; gap:12px; flex-wrap:wrap}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 16px; border-radius:12px; border:1px solid rgba(255,255,255,.12);
  background:var(--primary); color:#06131b; font-weight:600; text-decoration:none;
  transition: transform .06s ease, box-shadow .06s ease, filter .2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-ghost{background:transparent; color:var(--text); border-color:rgba(255,255,255,.18)}
footer{margin-top:20px; color:#9aa3af}

/* Responsive full-width banner above the card (background-based, works for SVG) */
.hero-banner{
  justify-self: stretch;
  width: 100%;
  margin: 0 0 24px;
  display: block;
  background-image: url('/img/header.svg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  height: clamp(160px, 26vw, 360px);
  border-bottom: 1px solid rgba(255,255,255,.12);
}

/* Light mode overrides */
@media (prefers-color-scheme: light){
  :root{ --bg:#f7fafc; --card:#fff; --text:#0b1220; --muted:#4b5563; --ring: rgba(14,165,233,.2); }
  body{ background: #fffaf3; } /* light background */
  .hero-banner{ border-bottom: 1px solid rgba(0,0,0,.06); }
}