.add-entity-container{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh;background-color:#f4f4f4;padding:20px}.add-entity-form{background:#fff;padding:2rem;border-radius:10px;box-shadow:0 4px 10px #0000001a;width:400px;text-align:center}.add-entity-form h2{margin-bottom:1.5rem;color:#333}.input-field{width:100%;padding:10px;margin-bottom:15px;border:1px solid #ccc;border-radius:5px;font-size:16px}.submit-button{width:100%;padding:10px;background:#007bff;color:#fff;border:none;border-radius:5px;font-size:16px;cursor:pointer;transition:background .3s}.submit-button:hover{background:#0056b3}.entity-list{margin-top:2rem;width:400px;background:#fff;padding:1.5rem;border-radius:10px;box-shadow:0 4px 10px #0000001a}.entity-list h3{text-align:center;color:#333}.entity-list ul{list-style-type:none;padding:0}.entity-item{background:#eef2ff;margin:8px 0;padding:10px;border-radius:5px;font-size:16px}form{max-width:400px;margin:20px auto;padding:20px;background:#f9f9f9;border-radius:10px;box-shadow:0 4px 10px #0000001a}input{width:100%;padding:10px;margin-bottom:10px;border:1px solid #ccc;border-radius:5px;font-size:1rem;transition:.3s}input:focus{border-color:#007bff;outline:none;box-shadow:0 0 5px #007bff80}button{width:100%;padding:10px;background:#007bff;color:#fff;border:none;border-radius:5px;font-size:1rem;cursor:pointer;transition:.3s}button:hover{background:#0056b3}@media (max-width: 480px){form{width:90%;padding:15px}}.Home-container{display:flex;flex-direction:column;justify-content:center;align-items:center;height:100vh;background-color:#f5f5f5;text-align:center}.reaction-time-tester{margin-top:20px}.leaderboard-container{max-width:600px;margin:20px auto;padding:20px;background:#f9f9f9;border-radius:10px;box-shadow:0 4px 10px #0000001a}h2{font-size:1.5rem;font-weight:700;text-align:center;margin-bottom:15px;color:#333}.add-time-button{display:block;width:100%;padding:10px;background:#007bff;color:#fff;border:none;border-radius:5px;font-size:1rem;cursor:pointer;transition:background .3s;margin-bottom:15px}.add-time-button:hover{background:#0056b3}.leaderboard-entry{background:#fff;padding:15px;border-radius:8px;border:1px solid #ccc;box-shadow:0 2px 5px #0000001a;margin-bottom:10px;transition:.3s}.leaderboard-entry:hover{box-shadow:0 4px 10px #0003}.leaderboard-entry h3{font-size:1.2rem;font-weight:700;color:#333}.leaderboard-entry p{font-size:.9rem;color:#666;margin-top:5px}.loading-text{font-size:1.2rem;color:#555;text-align:center}.loading-container{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;text-align:center}.spinner{width:50px;height:50px;border:4px solid #ddd;border-top:4px solid #007bff;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:10px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-text{font-size:1.2rem;color:#333;font-weight:700}@media (max-width: 480px){.leaderboard-container{width:90%;padding:15px}}*{margin:0;padding:0;box-sizing:border-box;font-family:Arial,sans-serif}.app-container{display:flex;justify-content:center;align-items:center;height:100vh;background:linear-gradient(135deg,#6a11cb,#2575fc)}.reaction-time-tester{text-align:center;background-color:#fff;padding:40px;border-radius:15px;box-shadow:0 5px 15px #0003;max-width:500px;width:90%}.reaction-time-tester h1{font-size:28px;color:#333;margin-bottom:15px}.reaction-time-tester p{font-size:18px;margin-bottom:20px;color:#555}.reaction-button{padding:15px 30px;font-size:18px;font-weight:700;background-color:#4caf50;color:#fff;border:none;border-radius:10px;cursor:pointer;transition:background .3s}.reaction-button:hover{background-color:#45a049}