:root {
            --saffron: #FF9933;
            --white: #FFFFFF;
            --green: #138808;
            --navy: #000080;
            --teal: #008080;
            --gold: #FFD700;
        }
        
        body {
            background-color: #f8f9fa;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        .navbar {
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        .hero-section {
            background: linear-gradient(135deg, rgba(255,153,51,0.1), rgba(19,136,8,0.1));
            border-radius: 16px;
            padding: 2rem;
            margin-bottom: 2rem;
        }
        
        .calculator-card {
            background: white;
            border-radius: 16px;
            box-shadow: 0 6px 15px rgba(0,0,0,0.1);
            padding: 2rem;
            margin-bottom: 2rem;
            transition: all 0.3s ease;
            border: none;
        }
        
        .calculator-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(0,0,0,0.15);
        }
        
        .calculator-header {
            display: flex;
            align-items: center;
            margin-bottom: 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--saffron);
        }
        
        .calculator-icon {
            width: 50px;
            height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            margin-right: 15px;
            color: white;
            font-size: 1.5rem;
            background: linear-gradient(135deg, var(--saffron), var(--green));
        }
        
        .input-group {
            margin-bottom: 1rem;
        }
        
        .unit-input {
            border-radius: 8px;
            padding: 0.75rem;
            border: 1px solid #ddd;
        }
        
        .btn-convert {
            background: linear-gradient(135deg, var(--saffron), var(--green));
            border: none;
            color: white;
            padding: 0.75rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .btn-convert:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(255,153,51,0.3);
        }
        
        .result-box {
            background: linear-gradient(135deg, rgba(255,153,51,0.05), rgba(19,136,8,0.05));
            border-radius: 12px;
            padding: 1.5rem;
            margin-top: 1.5rem;
            border-left: 4px solid var(--saffron);
        }
        
        .result-value {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--navy);
        }
        
        .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(255,153,51,0.1);
            color: #333;
        }
        
        .district-info {
            background: linear-gradient(135deg, rgba(0,0,128,0.05), rgba(0,128,128,0.05));
            border-radius: 16px;
            padding: 1.5rem;
            margin-bottom: 2rem;
        }
        
        .conversion-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 1.5rem;
        }
        
        .conversion-table th, .conversion-table td {
            padding: 0.75rem;
            border: 1px solid #ddd;
            text-align: center;
        }
        
        .conversion-table th {
            background-color: rgba(255,153,51,0.1);
        }

        /* Breadcrumb Navigation */
        .breadcrumb-nav {
            padding: 0.75rem 0;
            font-size: 0.9rem;
        }
        
        .breadcrumb-item a {
            color: var(--navy);
            text-decoration: none;
        }
        
        /* FAQ Section */
        .faq-item {
            margin-bottom: 1.5rem;
            border-bottom: 1px solid #eee;
            padding-bottom: 1rem;
        }
        
        .faq-question {
            font-weight: 600;
            color: var(--navy);
            margin-bottom: 0.5rem;
        }
        
        /* Improved semantic structure */
        main {
            min-height: 70vh;
        }
        
        /* Dark theme styles */
        body.dark-theme {
            background-color: #1a1a2e;
            color: #e6e6e6;
        }
        
        body.dark-theme .calculator-card {
            background: #16213e;
            color: #e6e6e6;
        }
        
        body.dark-theme .unit-input {
            background-color: #1a1a2e;
            border-color: #0f3460;
            color: #e6e6e6;
        }
        
        body.dark-theme .input-group-text {
            background-color: #0f3460;
            color: #e6e6e6;
            border-color: #0f3460;
        }
        
        body.dark-theme .conversion-table th,
        body.dark-theme .conversion-table td {
            border-color: #0f3460;
            color: #e6e6e6;
        }
        
        body.dark-theme .conversion-table th {
            background-color: #0f3460;
        }
        
        body.dark-theme .district-info {
            background: linear-gradient(135deg, rgba(0,0,128,0.1), rgba(0,128,128,0.1));
        }
        
        body.dark-theme .result-box {
            background: linear-gradient(135deg, rgba(255,153,51,0.1), rgba(19,136,8,0.1));
        }