diff --git a/sprite/lib/common.sh b/sprite/lib/common.sh
index 527ca772..9cbe8282 100644
--- a/sprite/lib/common.sh
+++ b/sprite/lib/common.sh
@@ -213,7 +213,7 @@ try_oauth_flow() {
 
     # Use a simpler nc approach - pipe response while capturing request
     (
-        local success_response='HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n<html><body style="font-family: system-ui; display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; background: #1a1a2e;"><div style="text-align: center; color: #fff;"><h1 style="color: #00d4aa;">Authentication Successful!</h1><p>You can close this window and return to your terminal.</p></div></body></html>'
+        local success_response='HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n<html><head><style>@keyframes checkmark{0%{transform:scale(0) rotate(-45deg);opacity:0}60%{transform:scale(1.2) rotate(-45deg);opacity:1}100%{transform:scale(1) rotate(-45deg);opacity:1}}@keyframes fadein{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}body{font-family:system-ui,-apple-system,sans-serif;display:flex;justify-content:center;align-items:center;height:100vh;margin:0;background:#1a1a2e}.card{text-align:center;color:#fff}.check{width:80px;height:80px;border-radius:50%;background:#00d4aa22;display:flex;align-items:center;justify-content:center;margin:0 auto 24px}.check::after{content:"";display:block;width:28px;height:14px;border-left:4px solid #00d4aa;border-bottom:4px solid #00d4aa;animation:checkmark .5s ease forwards}h1{color:#00d4aa;margin:0 0 8px;font-size:1.6rem}p{margin:0 0 6px;color:#ffffffcc;font-size:1rem}.sub{color:#ffffff66;font-size:.85rem;animation:fadein .5s ease .5s both}</style></head><body><div class="card"><div class="check"></div><h1>Authentication Successful!</h1><p>Redirecting back to terminal...</p><p class="sub">This tab will close automatically</p></div><script>setTimeout(function(){try{window.close()}catch(e){}setTimeout(function(){document.querySelector(".sub").textContent="You can safely close this tab"},500)},3000)</script></body></html>'
 
         while true; do
             # Listen and capture just the first line of the request, then respond
