:root{
  --bg:#0b0b0b;
  --card:#111217;
  --muted:#9aa4b2;
  --accent:#4ee1a0;
  --danger:#ff7b72;
  --glass: rgba(255,255,255,0.03);
  --radius:16px;
  --gap:18px;
  --maxwidth:980px;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(180deg,#07070a,#0b0b0d 60%);
  color:#f0f0f0;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}

.shell{
  flex:1;
  display:flex;
  justify-content:center;
  align-items:center;
  padding:20px;
}

.screen{
  width:100%;
  display:flex;
  justify-content:center;
  align-items:center;
}

.card{
  width:100%;
  max-width:var(--maxwidth);
  background:linear-gradient(180deg, rgba(255,255,255,0.04), rgba(0,0,0,0.04));
  border-radius:var(--radius);
  padding:40px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.6);
  border:1px solid rgba(255,255,255,0.05);
  text-align:center;
}

h1{font-size:2.5rem;margin-bottom:10px;color:#fff}
.muted{color:var(--muted);margin-bottom:20px;font-size:1.2rem}
.big{font-size:2rem;margin:8px 0}

select{
  padding:14px;
  border-radius:10px;
  border:1px solid rgba(255,255,255,0.1);
  background:#1a1a1a;
  color:#fff;
  font-size:1.1rem;
}
option{
  background:#1a1a1a;
  color:#fff;
}

button{
  cursor:pointer;
  font-size:1.2rem;
  border-radius:10px;
  padding:14px 20px;
}

.primary{background:var(--accent);color:#042018;border:none;font-weight:700}
.secondary{background:transparent;border:1px solid rgba(255,255,255,0.1);color:#fff}
.btn.real{background:#1a3d2f;color:#4ee1a0;border:1px solid #4ee1a0}
.btn.phish{background:#3d1a1a;color:#ff7b72;border:1px solid #ff7b72}

.btn-row{display:flex;gap:20px;justify-content:center;margin-top:20px}
.nav-row{display:flex;gap:20px;justify-content:center;margin-top:20px}

.message-card{background:var(--glass);color:#fff;padding:20px;border-radius:12px;border:1px solid rgba(255,255,255,0.05)}

.footer{
  text-align:center;
  padding:10px;
  font-size:1rem;
  color:var(--muted);
}

.hidden{display:none}

@media(max-width:720px){
  .card{padding:20px}
  h1{font-size:2rem}
  .muted{font-size:1rem}
  button,select{width:100%;font-size:1.1rem}
  .btn-row,.nav-row{flex-direction:column}
}