input[type="number"] {
            background-color: #ffffff;
            color: #000000;
            border: 1px solid #4b5563;
            border-radius: 6px;
            padding: 4px 8px;
            width: 100%;
            outline: none;
        }
        input[type="number"]:focus {
            box-shadow: 0 0 0 2px rgba(99,102,241,0.6);
        }
        label { @apply text-xs text-gray-400 mb-1 block; }
        .result-box { @apply mt-4 p-3 bg-indigo-900/30 border border-indigo-500/30 rounded-lg text-sm; }