.auth-shell{background:var(--bg);color:var(--cloud);isolation:isolate;position:relative}.auth-aurora{z-index:0;pointer-events:none;background:radial-gradient(60rem 40rem at 18% 12%, var(--ca-accent-12) 0%, transparent 60%), radial-gradient(48rem 38rem at 92% 88%, var(--ca-accent-08) 0%, transparent 62%), linear-gradient(180deg, transparent 0%, var(--ca-accent-04) 100%);position:fixed;inset:0}[data-theme=light] .auth-aurora{background:radial-gradient(64rem 44rem at 14% 8%, var(--ca-accent-15) 0%, transparent 58%), radial-gradient(52rem 40rem at 96% 96%, var(--ca-accent-10) 0%, transparent 60%), linear-gradient(180deg, transparent 0%, var(--bg-deep) 100%)}.auth-mobile-header{padding:var(--ca-space-4) var(--ca-space-5);padding-top:calc(var(--ca-space-4) + env(safe-area-inset-top,0px));border-bottom:1px solid var(--border);background:var(--bg-deep)}[data-theme=light] [data-chrome=follows-theme]{--teal:var(--ca-accent-text);--ca-accent:var(--ca-accent-text)}.auth-brand-band{padding:var(--ca-space-10) var(--ca-space-12);background:linear-gradient(155deg, var(--bg-deep) 0%, var(--surf) 55%, var(--surf2) 100%);border-bottom:1px solid var(--border);position:relative}.auth-brand-panel{background:linear-gradient(155deg, var(--bg-deep) 0%, var(--surf) 55%, var(--surf2) 100%);border-right:1px solid var(--border)}.auth-brand-panel-inner{padding:var(--ca-space-12) var(--ca-space-16) var(--ca-space-10)}@media (max-height:820px){.auth-brand-panel-inner{padding:var(--ca-space-8) var(--ca-space-16) var(--ca-space-6)}}.auth-form-panel{padding:clamp(var(--ca-space-8), 5vw, var(--ca-space-10)) clamp(var(--ca-space-5), 4vw, var(--ca-space-16));background:var(--bg);gap:var(--ca-space-5);position:relative}.auth-card{width:100%;max-width:27.5rem;padding:var(--ca-space-10);border:1px solid color-mix(in srgb, var(--border2) 14%, transparent);border-radius:var(--ca-card-radius);background:color-mix(in srgb, var(--surf) 92%, transparent);box-shadow:var(--ca-shadow-inset-sheen), var(--ca-shadow-lg);margin-inline:auto;position:relative}.auth-card:before{content:"";background:linear-gradient(90deg, transparent, var(--ca-accent), transparent);width:7.5rem;height:2px;position:absolute;top:0;left:50%;transform:translate(-50%)}[data-theme=light] .auth-card{background:var(--surf)}@media (max-width:640px){.auth-card{box-shadow:none;background:0 0;border:0;border-radius:0;padding:0}.auth-card:before{display:none}}@media (min-width:768px) and (max-width:1023.98px){.auth-form-panel{padding:var(--ca-space-12)}.auth-card{max-width:28.75rem}}.auth-pill{transition:background-color var(--ca-duration-fast) ease}@media (prefers-reduced-motion:reduce){.auth-card,.auth-pill,.auth-google-btn,.auth-microsoft-btn{transition:none}}