.auth-page{z-index:1;justify-content:center;align-items:flex-start;min-height:100vh;padding:140px 16px 64px;display:flex;position:relative}.auth-card{-webkit-backdrop-filter:blur(24px);backdrop-filter:blur(24px);background:rgba(255,255,255,.85);border:1px solid rgba(226,232,240,.8);border-radius:28px;flex-direction:column;gap:20px;width:100%;max-width:420px;padding:32px;display:flex;position:relative;overflow:hidden;box-shadow:0 30px 80px rgba(15,23,42,.15)}.auth-card:before{content:"";filter:blur(90px);opacity:.35;pointer-events:none;background:radial-gradient(circle,rgba(59,130,246,.35),transparent 65%);border-radius:999px;width:480px;height:480px;animation:24s ease-in-out infinite card-glow;position:absolute;top:-50%;bottom:auto;left:-30%;right:auto}.auth-card:after{content:"";filter:blur(80px);opacity:.3;pointer-events:none;background:radial-gradient(circle,rgba(14,165,233,.25),transparent 70%);border-radius:999px;width:420px;height:420px;animation:26s ease-in-out 6s infinite card-glow;position:absolute;top:auto;bottom:-50%;left:auto;right:-40%}.auth-card__intro h1{color:#0f172a;margin:0;font-size:1.6rem}.auth-card__intro p{color:#475569;margin:8px 0 0;font-size:.95rem}.role-pill{letter-spacing:.04em;text-transform:uppercase;border:1px solid rgba(255,255,255,.7);border-radius:999px;align-self:flex-start;padding:6px 14px;font-size:.75rem;font-weight:600;box-shadow:inset 0 0 0 1px rgba(255,255,255,.2)}.role-pill--student{color:#fff;background:linear-gradient(120deg,rgba(37,99,235,.95),rgba(59,130,246,.85))}.role-pill--researcher{color:#fff;background:linear-gradient(120deg,rgba(79,70,229,.95),rgba(14,165,233,.85))}.role-toggle{background:rgba(241,245,249,.75);border-radius:999px;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:6px;display:grid;position:relative;overflow:hidden}.role-toggle__indicator{background:#fff;border-radius:999px;width:calc(50% - 8px);height:calc(100% - 8px);transition:transform .25s;position:absolute;top:4px;left:4px;box-shadow:0 15px 40px rgba(15,23,42,.12)}.role-toggle__indicator--researcher{transform:translate(100%)}.role-toggle__indicator--student{transform:translate(0)}.role-toggle__option{z-index:1;text-align:center;color:#475569;border-radius:999px;padding:10px 12px;font-size:.9rem;font-weight:600;text-decoration:none;transition:color .15s;position:relative}.role-toggle__option.active{color:#0f172a}.auth-form{flex-direction:column;gap:16px;display:flex}.auth-field{color:#0f172a;flex-direction:column;gap:6px;font-size:.9rem;display:flex}.auth-label{color:#0f172a;font-weight:600}.auth-input{color:#0f172a;background:rgba(255,255,255,.95);border:1px solid rgba(148,163,184,.6);border-radius:16px;padding:14px 16px;font-size:.95rem;transition:border-color .15s,box-shadow .15s,background .15s;box-shadow:inset 0 1px 2px rgba(15,23,42,.05)}.auth-input::placeholder{color:#94a3b8}.auth-input:focus{background:#fff;border-color:rgba(37,99,235,.9);outline:none;box-shadow:0 0 0 3px rgba(37,99,235,.15)}.auth-field--error .auth-input{background:rgba(254,242,242,.5);border-color:#ef4444}.auth-field--error .auth-input:focus{border-color:#dc2626;box-shadow:0 0 0 3px rgba(239,68,68,.15)}.auth-field-error{color:#dc2626;background:rgba(254,242,242,.9);border:1px solid rgba(239,68,68,.4);border-radius:8px;align-items:center;gap:6px;margin-top:4px;padding:6px 10px;font-size:.85rem;display:flex}.auth-field-error__icon{flex-shrink:0;font-size:.9rem}.auth-field-error__text{font-weight:500}.auth-form-error{color:#dc2626;background:rgba(254,242,242,.9);border:1px solid rgba(239,68,68,.4);border-radius:10px;align-items:center;gap:8px;margin-top:4px;padding:10px 14px;font-size:.9rem;display:flex}.auth-form-error__icon{flex-shrink:0;font-size:1rem}.auth-form-error__text{font-weight:500}.auth-button{cursor:pointer;border:none;border-radius:999px;padding:14px 18px;font-size:.95rem;font-weight:600;transition:transform .15s,box-shadow .15s}.auth-button.primary{color:#fff;background:linear-gradient(120deg,#2563eb,#1d4ed8);box-shadow:0 6px 22px rgba(37,99,235,.35),0 0 28px rgba(59,130,246,.25)}.auth-button.primary:hover:not(:disabled){box-shadow:0 10px 28px rgba(37,99,235,.4),0 0 32px rgba(59,130,246,.3)}.auth-button:disabled{opacity:.7;cursor:not-allowed}.auth-button-spinner{border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;width:14px;height:14px;margin-right:8px;animation:.6s linear infinite spin;display:inline-block}@keyframes spin{to{transform:rotate(360deg)}}.auth-footer{color:#475569;margin-top:8px;font-size:.9rem}.auth-link{color:#1d4ed8;font-weight:600;text-decoration:none}.auth-link:hover{text-decoration:underline}@media (max-width:640px){.auth-page{padding-top:120px}.auth-card{padding:28px 24px}}@keyframes card-glow{0%{transform:translate(0,0)scale(.9)}50%{transform:translate(20px,-10px)scale(1.05)}to{transform:translate(-15px,10px)scale(.95)}}