body { background-color: #2c3e50; display: flex; justify-content: center; align-items: center; height: 100vh; }
.login-container { background: white; padding: 40px; border-radius: 10px; width: 350px; text-align: center; }
input { width: 100%; padding: 12px; margin: 10px 0; border: 1px solid #ddd; border-radius: 5px; }
button { width: 100%; padding: 12px; background: #3498db; color: white; border: none; border-radius: 5px; cursor: pointer; }
.back-link { display: block; margin-top: 15px; color: #7f8c8d; text-decoration: none; }