:root{--bg1:#0f172a;--bg2:#0b2946;--card:#ffffff;--accent:#7c3aed}
*{box-sizing:border-box;font-family:Inter,system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial}
html,body{height:100%;margin:0}
.bg-gradient{background:linear-gradient(135deg,var(--bg1),var(--bg2));min-height:100vh;display:flex;align-items:center;justify-content:center}
.center{display:flex;align-items:center;justify-content:center;padding:2rem}
.card{background:linear-gradient(180deg,rgba(197, 14, 14, 0.98),rgba(255,255,255,0.9));width:420px;padding:2rem;border-radius:14px;box-shadow:0 10px 30px rgba(2,6,23,0.6);backdrop-filter: blur(6px)}
.card h2{margin:0 0 1rem;font-size:1.4rem;color:#0b2946}
label{display:block;margin-bottom:0.6rem;color:#0b2946}
input[type=text],input[type=password],input[type=email]{width:100%;padding:0.8rem;border-radius:8px;border:1px solid #e6eef8;margin-top:0.3rem}
.btn{display:inline-block;padding:0.7rem 1rem;border-radius:10px;background:linear-gradient(90deg,var(--accent),#4f46e5);color:white;text-decoration:none;border:none;margin-top:0.8rem;cursor:pointer}
.btn.ghost{background:transparent;color:var(--card);border:2px solid rgba(255,255,255,0.15);margin-left:0}
.muted{color:#6b7280;font-size:0.9rem;margin-top:0.6rem}
hr{border:none;border-top:1px solid #eef3fb;margin:1rem 0}
.h2{color: rgba(197, 14, 14, 0.98);}