:root {
            --saffron: #FF9933;
            --white: #FFFFFF;
            --green: #138808;
            --navy: #1a365d;
            --teal: #008080;
            --gold: #FFD700;
            --primary: #2e7d32;
            --secondary: #f5f5f5;
            --light-bg: #f8fafc;
            --card-shadow: 0 10px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);
        }
        
        body {
            font-family: 'Poppins', sans-serif;
            background-color: var(--light-bg);
            color: #333;
            line-height: 1.6;
        }
        
        .navbar {
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            background: white !important;
        }
        
        .navbar-brand {
            font-weight: 700;
            color: var(--primary-color) !important;
            font-size: 1.5rem;
        }
        
        .hero-section {
            background: linear-gradient(135deg, rgba(30, 64, 175, 0.05), rgba(255, 255, 255, 0.95)), 
                        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="%23f0f4f8"/><path d="M0,0 L100,100 M100,0 L0,100" stroke="%23e2e8f0" stroke-width="1"/></svg>');
            border-radius: 20px;
            padding: 3.5rem 2rem;
            margin-bottom: 2.5rem;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(226, 232, 240, 0.6);
        }
        
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
            z-index: 0;
        }
        
        .district-card {
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.1);
            border: none;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            position: relative;
            z-index: 1;
            margin-bottom: 2rem;
            background: white;
        }
        
        .district-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 25px -5px rgba(0,0,0,0.15), 0 10px 10px -5px rgba(0,0,0,0.06);
        }
        
        .district-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 6px;
            background: linear-gradient(90deg, var(--saffron), var(--white), var(--green));
            z-index: 2;
        }
        
        .calculator-section {
            background-color: white;
            border-radius: 18px;
            padding: 2.5rem;
            box-shadow: var(--card-shadow);
            margin-bottom: 2.5rem;
            border: 1px solid rgba(226, 232, 240, 0.6);
            position: relative;
            overflow: hidden;
        }
        
        .calculator-section::after {
            content: '';
            position: absolute;
            bottom: 0;
            right: 0;
            width: 120px;
            height: 120px;
            background: linear-gradient(135deg, rgba(30, 64, 175, 0.03), transparent);
            border-radius: 50% 0 0 0;
            z-index: 0;
        }
        
        .section-header {
            position: relative;
            z-index: 2;
        }
        
        .section-header h2 {
            color: var(--navy);
            border-bottom: 3px solid var(--saffron);
            padding-bottom: 12px;
            margin-bottom: 30px;
            display: inline-block;
            font-family: 'Noto Serif', serif;
            font-weight: 700;
        }
        
        .form-control, .form-select {
            border-radius: 12px;
            padding: 14px 18px;
            border: 2px solid #e2e8f0;
            transition: all 0.3s;
            font-size: 16px;
        }
        
        .form-control:focus, .form-select:focus {
            border-color: var(--saffron);
            box-shadow: 0 0 0 4px rgba(255, 153, 51, 0.15);
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #1b5e20);
            border: none;
            border-radius: 14px;
            padding: 14px 28px;
            font-weight: 600;
            transition: all 0.3s;
            font-size: 17px;
            box-shadow: 0 4px 6px rgba(50, 50, 93, 0.11), 0 1px 3px rgba(0, 0, 0, 0.08);
        }
        
        .btn-primary:hover {
            background: linear-gradient(135deg, #1b5e20, #2e7d32);
            transform: translateY(-3px);
            box-shadow: 0 7px 14px rgba(50, 50, 93, 0.2), 0 3px 6px rgba(0, 0, 0, 0.12);
        }
        
        .result-card {
            background: linear-gradient(135deg, rgba(232, 245, 233, 0.8), rgba(200, 230, 201, 0.9));
            border-radius: 18px;
            padding: 30px;
            margin-top: 25px;
            text-align: center;
            display: none;
            border: 1px solid rgba(46, 125, 50, 0.2);
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            position: relative;
            z-index: 2;
        }
        
        .result-value {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            margin: 15px 0;
            font-family: 'Noto Serif', serif;
            text-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        
        .unit-badge {
            display: inline-block;
            padding: 9px 18px;
            margin: 0 8px 12px 0;
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            background: rgba(255,255,255,0.9);
            color: #333;
            box-shadow: 0 4px 6px rgba(0,0,0,0.03);
            border: 1px solid rgba(0,0,0,0.05);
            transition: all 0.2s;
        }
        
        .unit-badge:hover {
            transform: translateY(-2px);
            box-shadow: 0 7px 14px rgba(0,0,0,0.08);
        }
        
        .unit-highlight {
            background: linear-gradient(135deg, var(--saffron), #ff8c00);
            color: white;
            box-shadow: 0 4px 6px rgba(255, 153, 51, 0.3);
        }
        
        .district-info {
            padding: 30px;
            background: white;
            border-radius: 18px;
            box-shadow: var(--card-shadow);
            margin-bottom: 35px;
            border: 1px solid rgba(226, 232, 240, 0.6);
        }
        
        .district-image {
            border-radius: 16px;
            height: 280px;
            object-fit: cover;
            margin-bottom: 25px;
            box-shadow: 0 10px 15px -3px rgba(0,0,0,0.07);
        }
        
        .section-icon {
            width: 70px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 18px;
            margin-bottom: 25px;
            color: white;
            font-size: 2rem;
            box-shadow: 0 6px 12px rgba(0,0,0,0.12);
            position: relative;
            z-index: 2;
        }
        
        .icon-conversion {
            background: linear-gradient(135deg, #FF9933, #FF6600);
        }
        
        .icon-area {
            background: linear-gradient(135deg, #138808, #0B5E08);
        }
        
        .icon-price {
            background: linear-gradient(135deg, #1a365d, #2c5282);
        }
        
        .dark-theme {
            background-color: #121826;
            color: #e2e8f0;
        }
        
        .dark-theme .navbar {
            background: linear-gradient(135deg, #0f172a, #1e293b);
        }
        
        .dark-theme .calculator-section,
        .dark-theme .district-info,
        .dark-theme .result-card {
            background-color: #1e293b;
            color: #e2e8f0;
            border-color: #334155;
        }
        
        .dark-theme .form-control,
        .dark-theme .form-select {
            background-color: #1e293b;
            border-color: #334155;
            color: #e2e8f0;
        }
        
        .dark-theme .unit-badge {
            background-color: #334155;
            color: #e2e8f0;
        }
        
        .dark-theme .result-value {
            color: #4CAF50;
        }
        
        .hero-title {
            font-family: 'Noto Serif', serif;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        
        .feature-card {
            border-radius: 16px;
            padding: 25px;
            background: white;
            box-shadow: 0 4px 6px rgba(0,0,0,0.05);
            border: 1px solid rgba(226, 232, 240, 0.6);
            height: 100%;
            transition: all 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1);
        }
        
        .feature-icon {
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            margin-bottom: 20px;
            color: white;
            font-size: 1.8rem;
        }
        
        .feature-icon-1 {
            background: linear-gradient(135deg, #FF9933, #FF6600);
        }
        
        .feature-icon-2 {
            background: linear-gradient(135deg, #138808, #0B5E08);
        }
        
        .feature-icon-3 {
            background: linear-gradient(135deg, #1a365d, #2c5282);
        }
        .scroll-top {
            position: fixed;
            bottom: 25px;
            right: 25px;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--saffron), #ff8c00);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 4px 6px rgba(0,0,0,0.15);
            cursor: pointer;
            z-index: 1000;
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.3s;
        }
        
        .scroll-top.show {
            opacity: 1;
            transform: translateY(0);
        }
        
        @media (max-width: 768px) {
            .hero-section {
                padding: 2rem 1.5rem;
            }
            
            .calculator-section {
                padding: 1.5rem;
            }
            
            .result-value {
                font-size: 2.2rem;
            }
        }