:root {
            --saffron: #FF9933;
            --white: #FFFFFF;
            --green: #138808;
            --navy: #000080;
            --teal: #008080;
            --gold: #FFD700;
            --primary: #2e7d32;
        }
        
        body {
            background-color: #f8f9fa;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            color: #333;
            line-height: 1.6;
        }
        
        .navbar {
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        .hero-section {
            background: linear-gradient(135deg, rgba(227, 242, 253, 0.9), rgba(187, 222, 251, 0.9)), 
                         url('https://images.unsplash.com/photo-1581578021080-34a0d1d12b9c?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1200&q=80');
            background-size: cover;
            background-position: center;
            border-radius: 16px;
            padding: 3rem 2rem;
            margin-top: 1rem;
            margin-bottom: 2rem;
            position: relative;
            overflow: hidden;
        }
        
        .hero-section::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;
        }
        
        .district-banner {
            font-weight: 700;
            background: linear-gradient(90deg, var(--saffron), var(--green));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-align: center;
            margin-bottom: 1rem;
            position: relative;
            display: inline-block;
        }
        
        .district-banner::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 4px;
            background: linear-gradient(90deg, var(--saffron), var(--green));
            border-radius: 2px;
        }
        
        .calculator-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;
        }
        
        .calculator-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;
        }
        
        .calculator-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(0,0,0,0.15);
        }
        
        .card-header {
            background: linear-gradient(135deg, var(--navy), var(--teal));
            color: white;
            font-weight: 600;
            padding: 1.25rem;
            border-bottom: none;
        }
        
        .card-body {
            padding: 1.5rem;
            position: relative;
            overflow: hidden;
            background-color: white;
        }
        
        .form-label {
            font-weight: 600;
            color: var(--navy);
        }
        
        .form-control, .form-select {
            border-radius: 10px;
            padding: 0.75rem 1rem;
            border: 2px solid #e0e0e0;
            transition: all 0.3s;
        }
        
        .form-control:focus, .form-select:focus {
            border-color: var(--saffron);
            box-shadow: 0 0 0 0.25rem rgba(255, 153, 51, 0.25);
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--green), #0B5E08);
            border: none;
            border-radius: 10px;
            padding: 0.75rem 1.5rem;
            font-weight: 600;
            transition: all 0.3s;
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(19, 136, 8, 0.3);
        }
        
        .result-box {
            background-color: rgba(19, 136, 8, 0.1);
            border-left: 4px solid var(--green);
            border-radius: 8px;
            padding: 1.25rem;
            margin-top: 1.5rem;
            transition: all 0.3s ease;
        }
        
        .result-box:hover {
            transform: scale(1.02);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        
        .result-value {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--green);
            margin-bottom: 0;
        }
        
        .unit-badge {
            display: inline-block;
            padding: 5px 10px;
            margin-right: 8px;
            margin-bottom: 8px;
            font-size: 12px;
            font-weight: 600;
            border-radius: 8px;
            background-color: rgba(255,255,255,0.9);
            color: #333;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
            border: 1px solid rgba(0,0,0,0.05);
        }
        
        .info-section {
            background-color: white;
            border-radius: 16px;
            padding: 2rem;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            margin-bottom: 2rem;
            border: 1px solid rgba(0,0,0,0.05);
        }
        
        .common-units {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            justify-content: center;
            margin-top: 1rem;
        }
        
        .common-unit {
            background: linear-gradient(135deg, var(--saffron), #FF6600);
            color: white;
            padding: 10px 20px;
            border-radius: 10px;
            font-weight: 600;
            text-align: center;
            min-width: 120px;
        }
        
        .section-title {
            position: relative;
            padding-bottom: 15px;
            margin-bottom: 1.5rem;
            color: var(--navy);
            font-size: 1.8rem;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--saffron), var(--green));
            border-radius: 2px;
        }
        
        .siwan-map {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            height: 100%;
        }
        
        .siwan-map img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        .unit-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 1rem;
        }
        
        .unit-table th, .unit-table td {
            padding: 0.75rem;
            text-align: left;
            border-bottom: 1px solid #eee;
        }
        
        .unit-table th {
            background-color: rgba(19, 136, 8, 0.1);
            color: var(--navy);
            font-weight: 600;
        }
        
        .unit-table tr:hover {
            background-color: rgba(0, 128, 128, 0.05);
        }
        
        
        
        .breadcrumb {
            background-color: transparent;
            padding: 0.75rem 0;
            margin-bottom: 1rem;
        }
        
        .breadcrumb-item a {
            color: var(--navy);
            text-decoration: none;
        }
        
        .breadcrumb-item.active {
            color: var(--teal);
            font-weight: 500;
        }
        
        h1, h2, h3, h4, h5, h6 {
            color: var(--navy);
        }
        
        .siwan-intro h2 {
            color: var(--teal);
            margin-bottom: 1rem;
        }
        
        @media (max-width: 768px) {
            .hero-section {
                padding: 2rem 1rem;
            }
            
            .district-banner {
                font-size: 1.8rem;
            }
            
            .common-unit {
                min-width: 100px;
                padding: 8px 15px;
                font-size: 0.9rem;
            }
        }