:root{--bg:#1f1e1c;--card:#2a2926;--text:#f5f1ea;--muted:#b9b2a6;--gold:#dfb87f;--gold-strong:#c89a64;--danger:#ff8a80}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{background:var(--bg);color:var(--text);font-family:Archivo,Roboto,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.auth-shell{justify-content:center;align-items:center;min-height:100vh;padding:24px 16px;display:flex}.auth-card{background:var(--card);text-align:center;border:1px solid #dfb87f2e;border-radius:16px;width:100%;max-width:420px;padding:40px 32px}.auth-card img{width:180px;height:auto;margin-bottom:28px}.auth-card h1{margin-bottom:8px;font-size:22px;font-weight:800}.auth-card p{color:var(--muted);font-size:14px;line-height:1.5}.auth-card p+p{margin-top:10px}.btn{background:var(--gold);color:#1f1e1c;cursor:pointer;border:none;border-radius:10px;justify-content:center;align-items:center;gap:10px;width:100%;margin-top:28px;padding:12px 16px;font-size:15px;font-weight:700;text-decoration:none;display:inline-flex}.btn:hover{background:var(--gold-strong)}.btn:disabled{opacity:.6;cursor:wait}.btn-secondary{color:var(--gold);border:1px solid var(--gold);background:0 0;margin-top:12px}.btn-secondary:hover{background:#dfb87f1a}.hint{margin-top:16px;font-size:13px}.error{color:var(--danger)}.gsi-button{justify-content:center;min-height:44px;margin-top:28px;display:flex}