body { font-family: sans-serif; display: flex; justify-content: center; align-items: center; height: 100vh; background: #f0f2f5; margin: 0; }
.login-container { background: white; padding: 2rem; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.1); width: 300px; }
h2 { margin-top: 0; color: #1c1e21; text-align: center; }
input { width: 100%; padding: 10px; margin: 10px 0; border: 1px solid #ddd; border-radius: 4px; box-sizing: border-box; }
button { width: 100%; padding: 10px; background: #007bff; color: white; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; }
button:hover { background: #0056b3; }
#error { color: red; font-size: 14px; text-align: center; margin-top: 10px; }