body{font-family:system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial; background:linear-gradient(135deg,#667eea,#764ba2); min-height:100vh; display:flex;align-items:center;justify-content:center;padding:20px}
.container{background:#fff;border-radius:12px;padding:36px;max-width:480px;width:100%;box-shadow:0 20px 40px rgba(0,0,0,.12)}
h1{font-size:22px;margin-bottom:6px;color:#333}
p.sub{color:#666;margin-bottom:18px}
.form-group{margin-bottom:14px}
.form-group label{display:block;margin-bottom:6px;font-weight:600;color:#333}
.form-group input{width:100%;padding:12px;border:1px solid #e6e9ee;border-radius:8px}
.btn{width:100%;padding:12px;border:0;border-radius:8px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-weight:700;cursor:pointer}
.message{padding:12px;border-radius:8px;margin-bottom:16px}
.message.error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}
.message.success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}
.footer{margin-top:16px;text-align:center}
.footer a{color:#667eea;text-decoration:none}