html,body{min-height:100%}body{margin:0;padding:24px;background:linear-gradient(135deg,#eaf2ff,#f8fafc);font-family:Arial,Helvetica,sans-serif;display:flex;align-items:center;justify-content:center}.login-box{width:100%;max-width:430px;background:#fff;padding:34px;border-radius:18px;border:1px solid #e5eaf2;box-shadow:0 18px 50px rgba(15,23,42,.14)}.school-logo{width:96px;height:96px;object-fit:contain}.login-box h3{color:#0d6efd;font-weight:700}.form-control,.btn{min-height:46px}