:root{color-scheme:light;font-family:Inter,system-ui,sans-serif}*{box-sizing:border-box}body{margin:0;background:#f1f2f6}.shell-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.shell-card{width:100%;max-width:380px;background:#fff;border-radius:12px;box-shadow:0 10px 30px #00000014;padding:32px;text-align:center}.shell-title{font-size:22px;font-weight:700;color:#111827;margin:0 0 4px}.shell-subtitle{font-size:14px;color:#6b7280;margin:0 0 24px}.shell-button{width:100%;padding:12px 16px;border:none;border-radius:8px;background:#4443e4;color:#fff;font-size:15px;font-weight:600;cursor:pointer}.shell-button:disabled{opacity:.6;cursor:not-allowed}.shell-error{margin-top:16px;padding:10px 12px;border-radius:8px;background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;font-size:13px;text-align:left}.shell-link{display:inline-block;margin-top:12px;font-size:13px;color:#4443e4;text-decoration:none}.shell-navbar{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;background:#fff;box-shadow:0 1px #0000000f}.shell-navbar-brand{font-size:15px;font-weight:700;color:#111827}.shell-navbar-right{display:flex;align-items:center;gap:16px}.shell-navbar-email{font-size:13px;color:#6b7280}.shell-navbar-logout{padding:8px 14px;border:1px solid #e5e7eb;border-radius:8px;background:#fff;color:#111827;font-size:13px;font-weight:600;cursor:pointer}.shell-navbar-logout:hover{background:#f9fafb;border-color:#d1d5db}.shell-spinner{width:32px;height:32px;border:3px solid #e5e7eb;border-top-color:#4443e4;border-radius:50%;margin:0 auto 16px;animation:shell-spin .8s linear infinite}@keyframes shell-spin{to{transform:rotate(360deg)}}