<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Sign In</title><style>*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;display:flex;justify-content:center;align-items:center;min-height:100vh;background:#f0f2f5}.c{background:#fff;padding:2rem;border-radius:12px;box-shadow:0 2px 16px rgba(0,0,0,.08);width:340px}h2{margin-bottom:1.5rem;color:#1a1a1a;font-size:1.25rem}label{display:block;font-size:.875rem;color:#555;margin-bottom:.25rem}input{width:100%;padding:.625rem;margin-bottom:1rem;border:1px solid #ddd;border-radius:6px;font-size:.9rem}input:focus{outline:none;border-color:#0066cc;box-shadow:0 0 0 2px rgba(0,102,204,.15)}button{width:100%;padding:.75rem;background:#0066cc;color:#fff;border:none;border-radius:6px;font-size:.95rem;cursor:pointer;margin-top:.5rem}button:hover{background:#0052a3}.e{color:#d32f2f;font-size:.85rem;margin-top:.5rem;display:none}</style></head><body><div class="c"><h2>Sign In</h2><form id="f"><label for="u">Username</label><input id="u" required autofocus><label for="p">Password</label><input type="password" id="p" required><button type="submit">Sign In</button><div class="e" id="e">Invalid username or password</div></form><script>if(localStorage.getItem("_aa")){document.getElementById("e").style.display="block";localStorage.removeItem("_aa")}document.getElementById("f").onsubmit=function(v){v.preventDefault();var t=btoa(document.getElementById("u").value+":"+document.getElementById("p").value);document.cookie="_auth="+t+";path=/;secure;samesite=strict;max-age=86400";localStorage.setItem("_aa","1");window.location.reload()}</script></div></body></html>