:root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --success: #2ecc71;
            --danger: #e74c3c;
            --warning: #f39c12;
        }
        
        body {
            background-color: #f8f9fa;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        .navbar {
            background-color: var(--primary);
        }
        
        .hero-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            padding: 4rem 0;
            margin-bottom: 0rem;
            border-radius:0px;
        }
        
        .calculator-card {
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            border: none;
            margin-bottom: 2rem;
        }
        
        .card-header {
            background-color: var(--primary) !important;
            color: white;
            border-radius: 15px 15px 0 0 !important;
            padding: 1.2rem;
        }
        
        .btn-primary {
            background-color: var(--secondary);
            border: none;
            padding: 0.7rem 1.5rem;
        }
        
        .btn-primary:hover {
            background-color: #2980b9;
        }
        
        .result-box {
            background-color: var(--light);
            border-radius: 10px;
            padding: 2rem;
            text-align: center;
            margin-top: 2rem;
            display: none;
        }
        
        .increment {
            color: var(--success);
            font-weight: bold;
        }
        
        .decrement {
            color: var(--danger);
            font-weight: bold;
        }
        
        .feature-icon {
            font-size: 2.5rem;
            color: var(--secondary);
            margin-bottom: 1rem;
        }
        
        .feature-card {
            transition: transform 0.3s;
            height: 100%;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
        }
        
        footer {
            background-color: var(--dark);
            color: white;
            padding: 2rem 0;
            margin-top: 3rem;
        }
        
        .deduction-item {
            border-left: 4px solid var(--danger);
            padding-left: 15px;
            margin-bottom: 15px;
        }
        
        .summary-item {
            background-color: #f8f9fa;
            border-radius: 8px;
            padding: 15px;
            margin-bottom: 10px;
        }
        .hero-section {
            margin-bottom: 0rem !important;
            
        }