.auth-loading-shell{background:#fff;place-items:center;min-height:100vh;padding:24px;display:grid}.auth-loading-card{border:1px solid var(--border);background:var(--surface);box-shadow:var(--panel-shadow);border-radius:16px;padding:18px 22px}.app-error-shell{background:radial-gradient(circle at 0 0,#116eee1a,#0000 30%),linear-gradient(#fff 0%,#eef4fb 100%);place-items:center;min-height:100vh;padding:24px;display:grid}.app-error-shell.is-learner{background:radial-gradient(circle at top left, rgba(var(--accent-rgb), .16), transparent 26%), linear-gradient(180deg, #ffffffeb 0%, #ecf1f7f5 100%)}.app-error-card{color:#1c2b3d;background:#fffffff0;border:1px solid #116eee1f;border-radius:24px;gap:14px;width:min(100%,560px);padding:28px;display:grid;box-shadow:0 24px 60px #116eee1f}.app-error-kicker{letter-spacing:.14em;text-transform:uppercase;color:#5f7388;font-size:.78rem;font-weight:700}.app-error-card h1{color:#162b4e;margin:0;font-size:clamp(1.65rem,2vw,2.15rem);line-height:1.1}.app-error-card p{color:#5f7388;margin:0;font-size:1rem;line-height:1.7}.app-error-actions{flex-wrap:wrap;gap:12px;margin-top:8px;display:flex}.app-error-button{border-radius:999px;justify-content:center;align-items:center;min-height:44px;padding:0 18px;font-weight:700;text-decoration:none;transition:transform .16s,box-shadow .16s,background .16s;display:inline-flex}.app-error-button:hover{transform:translateY(-1px)}.app-error-button.is-primary{color:#fff;background:#116eee;box-shadow:0 12px 28px #116eee33}.app-error-button.is-secondary{color:#116eee;background:#116eee0f;border:1px solid #116eee29}