.container {
            max-width: 800px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.95);
            padding: 30px;
            border-radius: 20px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
        }

        h1 {
            text-align: center;
            color: #1e293b;
            margin-bottom: 30px;
            font-size: 2.5em;
            letter-spacing: 2px;
        }

        .calculator-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
        }

        .input-section, .result-section {
            background: #f8fafc;
            padding: 25px;
            border-radius: 15px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
        }

        .input-group {
            margin-bottom: 20px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            color: #64748b;
            font-weight: 500;
        }

        input {
            width: 100%;
            padding: 12px;
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            font-size: 16px;
            transition: border-color 0.3s ease;
        }

        input:focus {
            outline: none;
            border-color: #6366f1;
        }

        .calculate-btn {
            background: #4f46e5;
            color: white;
            border: none;
            padding: 15px 30px;
            border-radius: 8px;
            font-size: 16px;
            cursor: pointer;
            transition: transform 0.2s, background 0.3s;
            width: 100%;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .calculate-btn:hover {
            background: #4338ca;
            transform: translateY(-2px);
        }

        .result-item {
            display: flex;
            justify-content: space-between;
            margin-bottom: 15px;
            padding: 15px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .result-label {
            color: #64748b;
            font-weight: 500;
        }

        .result-value {
            color: #1e293b;
            font-weight: bold;
        }

        .highlight {
            background: #4f46e5;
            color: white;
        }

        .highlight .result-label {
            color: rgba(255, 255, 255, 0.9);
        }

        @media (max-width: 768px) {
            .calculator-section {
                grid-template-columns: 1fr;
            }
        }