:root{--sa-ink: #14284e;--sa-muted: #5f6f8e;--sa-brand: #1d4ed8;--sa-line: #d7e5fb}body[data-page^=student-auth]{margin:0;min-height:100vh;display:grid;place-items:center;padding:20px;font-family:Nunito,sans-serif;color:var(--sa-ink);background:radial-gradient(circle at 12% 10%,#dbeafe,transparent 35%),radial-gradient(circle at 88% 10%,#ccfbf1,transparent 34%),linear-gradient(160deg,#f7fbff,#eff6ff 40%,#f8fafc)}.student-auth-card{width:min(460px,94vw);background:#fffffff2;border:1px solid var(--sa-line);border-radius:22px;box-shadow:0 22px 48px #142e6729;padding:24px;position:relative;overflow:hidden}.student-auth-card:before{content:"";position:absolute;inset:0 0 auto 0;height:5px;background:linear-gradient(90deg,#1d4ed8,#0f766e,#f59e0b)}.student-auth-back{text-decoration:none;color:#1e3a8a;font-weight:800;font-size:.86rem}.student-auth-title{margin:10px 0 4px;font-family:"Baloo 2",sans-serif;font-size:2rem;line-height:1.05}.student-auth-subtitle{margin:0 0 12px;color:var(--sa-muted);font-weight:700}.student-auth-benefits{margin:0 0 12px;padding:10px 11px;border-radius:12px;border:1px solid #dbeafe;background:#f8fbff;color:#334155;font-weight:700;font-size:.88rem}.student-auth-field{margin-bottom:11px}.student-auth-form{margin-top:4px}.student-auth-field label{display:block;font-weight:800;font-size:.9rem;margin-bottom:5px}.student-auth-field label span{color:#b91c1c}.student-auth-input{width:100%;border:1px solid #cddcf7;border-radius:12px;padding:11px 12px;font:inherit}.student-auth-input:focus{outline:none;border-color:#93c5fd;box-shadow:0 0 0 3px #3b82f629}.student-auth-input.is-invalid{border-color:#ef4444;box-shadow:0 0 0 3px #ef44441f}.student-auth-help{margin-top:5px;color:#64748b;font-size:.8rem;font-weight:700}.student-auth-btn{width:100%;border:0;border-radius:12px;padding:11px;font-weight:900;color:#fff;background:linear-gradient(120deg,#1d4ed8,#0f766e);cursor:pointer}.student-auth-btn:hover{filter:brightness(1.05)}.student-auth-field-error{margin-top:5px;color:#991b1b;font-size:.78rem;font-weight:800}.student-auth-remember{margin-top:-2px;margin-bottom:14px}.student-auth-remember label{margin:0;display:inline-flex;align-items:center;gap:8px;font-weight:700;color:#334155}.student-auth-remember input{width:16px;height:16px}.student-auth-switch{margin-top:12px;text-align:center;color:var(--sa-muted);font-weight:700}.student-auth-switch a{color:var(--sa-brand);text-decoration:none;font-weight:900}.student-auth-error{margin-bottom:10px;background:#fee2e2;color:#991b1b;border:1px solid #fecaca;border-radius:10px;padding:10px;font-weight:700}.student-auth-success{margin-bottom:10px;background:#dcfce7;color:#166534;border:1px solid #bbf7d0;border-radius:10px;padding:10px;font-weight:700}@media (max-width: 520px){.student-auth-card{border-radius:16px;padding:18px}.student-auth-title{font-size:1.72rem}}