:root {
            --saffron: #FF9933;
            --white: #FFFFFF;
            --green: #138808;
            --navy: #000080;
            --teal: #008080;
            --gold: #FFD700;
            --primary: #2e7d32;
        }
        
        body {
            background-color: #f8f9fa;
            font-family: 'Poppins', sans-serif;
            line-height: 1.6;
        }
        
        .navbar {
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        .hero-section {
            background: linear-gradient(135deg, rgba(19, 136, 8, 0.1), rgba(255, 153, 51, 0.1));
            border-radius: 16px;
            padding: 3rem;
            margin-bottom: 2rem;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="none" stroke="%23ddd" stroke-width="1" opacity="0.2"/></svg>');
            background-size: 30px 30px;
        }
        
        .tool-card {
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
            border: none;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            position: relative;
            z-index: 1;
            height: 100%;
            margin-bottom: 1.5rem;
            background-color: #fff;
        }
        
        .tool-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 8px;
            background: linear-gradient(90deg, var(--saffron), var(--white), var(--green));
            z-index: 2;
        }
        
        .tool-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(0,0,0,0.15);
        }
        
        .card-header {
            background: linear-gradient(135deg, var(--primary), #1b5e20);
            color: white;
            font-weight: 700;
            padding: 1.25rem 1.5rem;
            border-bottom: none;
        }
        
        .card-icon {
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            margin: 0 auto 1rem;
            color: white;
            font-size: 1.75rem;
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        
        .icon-convert { background: linear-gradient(135deg, #FF9933, #FF6600); }
        .icon-area { background: linear-gradient(135deg, #138808, #0B5E08); }
        .icon-price { background: linear-gradient(135deg, #000080, #1A237E); }
        
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 30px;
            font-size: 2rem;
            font-weight: 700;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--saffron), var(--green));
            border-radius: 2px;
        }
        
        .district-info {
            background-color: white;
            border-radius: 16px;
            padding: 25px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            margin-bottom: 30px;
        }
        
        .district-image {
            border-radius: 12px;
            height: 250px;
            object-fit: cover;
            width: 100%;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        
        .unit-badge {
            display: inline-block;
            padding: 5px 12px;
            margin-right: 8px;
            margin-bottom: 8px;
            font-size: 13px;
            font-weight: 600;
            border-radius: 8px;
            background-color: rgba(46, 125, 50, 0.1);
            color: var(--primary);
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            border: 1px solid rgba(46, 125, 50, 0.2);
        }
        
        .form-control, .form-select {
            border-radius: 10px;
            padding: 12px 15px;
            border: 1px solid #ddd;
        }
        
        .form-control:focus, .form-select:focus {
            border-color: var(--saffron);
            box-shadow: 0 0 0 3px rgba(255, 153, 51, 0.2);
        }
        
        .btn-calculate {
            background: linear-gradient(135deg, var(--primary), #1b5e20);
            color: white;
            border: none;
            padding: 12px 24px;
            font-weight: 600;
            border-radius: 10px;
            transition: all 0.3s;
        }
        
        .btn-calculate:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 15px rgba(46, 125, 50, 0.4);
        }
        
        .result-box {
            background-color: rgba(46, 125, 50, 0.05);
            border-radius: 12px;
            padding: 20px;
            border: 1px dashed var(--primary);
            margin-top: 20px;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--primary);
            text-align: center;
            transition: all 0.3s;
        }
        
        @media (max-width: 768px) {
            .hero-section {
                padding: 1.5rem;
            }
            .section-title {
                font-size: 1.75rem;
            }
        }