body{margin:0;background-color:#030508;color:#e2e8f0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.gch-auth-wrap{position:relative;z-index:1;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1rem}.gch-auth-box{width:100%;max-width:28rem}.gch-auth-brand{text-align:center;margin-bottom:1.5rem}.gch-auth-brand h1{margin:.5rem 0 0;font-size:1.25rem;letter-spacing:.08em}.gch-auth-brand p{margin:.25rem 0 0;color:#64748b;font-size:.875rem}.gch-card{background:#ffffff;color:#0f172a;border-radius:.75rem;padding:1.5rem;box-shadow:0 4px 24px rgba(0,0,0,.35)}.gch-card h2{margin:0 0 1rem;font-size:1.125rem}.gch-btn{display:block;width:100%;padding:.625rem 1rem;margin-bottom:.5rem;border-radius:.5rem;border:1px solid #cbd5e1;background:#0f172a;color:#fff;font-size:.875rem;font-weight:600;cursor:pointer}.gch-btn:hover:not(:disabled){background:#1e293b}.gch-btn:disabled{opacity:.65;cursor:not-allowed}.gch-btn-outline{background:#fff;color:#0f172a;border:1px solid #cbd5e1}.gch-btn-outline:hover{background:#f8fafc}.gch-field{margin-bottom:1rem}.gch-field label{display:block;font-size:.875rem;font-weight:500;margin-bottom:.375rem}.gch-field input{width:100%;box-sizing:border-box;padding:.5rem .75rem;border:1px solid #cbd5e1;border-radius:.375rem;font-size:.875rem}.gch-error{color:#dc2626;font-size:.875rem;margin-bottom:.5rem}.gch-link{color:#4f6fd8;text-decoration:none}.gch-link:hover{text-decoration:underline}.gch-muted{text-align:center;font-size:.875rem;color:#64748b;margin-top:1rem}.gch-gsi-slot{position:relative;height:44px;width:100%;margin:0 0 4px}.gch-gsi-button,.gch-gsi-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}.gch-gsi-placeholder{gap:10px;border:1px solid #dadce0;border-radius:4px;background:#fff;color:#3c4043;font:500 14px/1 Google Sans,Roboto,Arial,sans-serif;transition:opacity .2s ease}.gch-gsi-placeholder:after{content:"";position:absolute;inset:0;border-radius:4px;background:linear-gradient(90deg,transparent,rgba(99,102,241,.08),transparent);background-size:200% 100%;animation:gch-gsi-shimmer 1.2s linear infinite}.gch-gsi-placeholder.is-hidden{opacity:0}.gch-gsi-button{opacity:0;transition:opacity .2s ease}.gch-gsi-button.is-shown{opacity:1}@keyframes gch-gsi-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}