body {
            font-family: Arial, sans-serif;
            max-width: 600px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f5f5f5;
            color: #333;
        }
        body.dark-mode {
            background-color: #121212;
            color: #f1f1f1;
        }
        h1 {
            text-align: center;
        }
        .calculator, .saved-calcs {
            background: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        .dark-mode .calculator, .dark-mode .saved-calcs {
            background: #1e1e1e;
            color: #f1f1f1;
        }
        .form-group {
            margin-bottom: 15px;
        }
        label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }
        input, select {
            width: 100%;
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 4px;
        }
        button {
            background: #007bff;
            color: white;
            border: none;
            padding: 10px 15px;
            border-radius: 4px;
            cursor: pointer;
            width: 100%;
            font-size: 16px;
            margin-bottom: 10px;
        }
        button:hover {
            background: #0056b3;
        }
        .result {
            margin-top: 20px;
            padding: 15px;
            border-radius: 4px;
            font-weight: bold;
            text-align: center;
        }
        .minor {
            background-color: #d4edda;
            color: #155724;
        }
        .major {
            background-color: #cce5ff;
            color: #004085;
        }
        .invalid {
            background-color: #f8d7da;
            color: #721c24;
        }
        .saved-calcs {
            margin-top: 20px;
        }
        .saved-calcs h2 {
            margin-bottom: 10px;
        }
        .saved-calcs ul {
            list-style-type: none;
            padding: 0;
        }
        .saved-calcs li {
            padding: 10px;
            border-bottom: 1px solid #ccc;
        }
        .saved-calcs li:last-child {
            border-bottom: none;
        }
        .copy-btn {
            background: #28a745;
            margin-top: 10px;
        }
        .copy-btn:hover {
            background: #218838;
        }
        #customBulletWeight {
            display: none;
            margin-top: 5px;
        }
        @media (max-width: 480px) {
            .calculator, .saved-calcs {
                padding: 15px;
            }
            button {
                padding: 12px;
            }
        }
        .dark-mode-toggle {
            text-align: center;
            margin-bottom: 20px;
        }
        .dark-mode-toggle button {
            width: auto;
            padding: 8px 12px;
        }