body{font-family:"Segoe UI",Roboto,sans-serif;background:linear-gradient(135deg,#0d1117,#161b22);color:#c9d1d9;display:flex;align-items:center;justify-content:center;height:100vh;margin:0}.login-container{background:#1f2937;border-radius:12px;padding:40px;width:340px;box-shadow:0 4px 20px rgba(0,0,0,.5);text-align:center}h2{margin-bottom:25px;color:#58a6ff}label{display:block;text-align:left;margin:10px 0 5px;color:#9ca3af;font-size:14px}input{width:100%;padding:10px;border:1px solid #374151;border-radius:6px;background-color:#0d1117;color:#f3f4f6;font-size:15px}input:focus{outline:0;border-color:#58a6ff;background-color:#111827}button{width:100%;margin-top:20px;padding:10px;border:none;border-radius:6px;background:#2563eb;color:#fff;font-weight:600;font-size:15px;cursor:pointer;transition:background .2s}button:hover{background:#1d4ed8}.error{background-color:#7f1d1d;color:#fca5a5;padding:8px;border-radius:6px;margin-bottom:15px;font-size:14px}.success{background-color:#14532d;color:#86efac;padding:8px;border-radius:6px;margin-bottom:15px;font-size:14px}footer{margin-top:15px;font-size:12px;color:#6b7280}@media (max-width:430px){.login-container{width:65%;box-shadow:0 4px 20px rgba(209,208,208,.664);color:#fff;font-size:1.2em}}