:root {
            --primary: #3498db;
            --primary-dark: #2980b9;
            --secondary: #2c3e50;
            --light: #ecf0f1;
            --dark: #34495e;
            --success: #2ecc71;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #f9f9f9;
            color: var(--dark);
            line-height: 1.6;
        }

        header {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            padding: 2rem 0;
            text-align: center;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 0;
        }

        h1,
        h2,
        h3 {
            margin-bottom: 1rem;
        }

        h1 {
            font-size: 2.5rem;
        }

        h2 {
            color: var(--primary);
            border-bottom: 2px solid var(--light);
            padding-bottom: 0.5rem;
        }

        p {
            margin-bottom: 1rem;
        }

        .intro {
            font-size: 1.2rem;
            text-align: center;
            margin-bottom: 2rem;
        }

        .card {
            background: white;
            border-radius: 8px;
            box-shadow: var(--shadow);
            padding: 1.5rem;
            margin-bottom: 2rem;
        }

        .api-endpoint {
            background-color: var(--secondary);
            color: white;
            padding: 1rem;
            border-radius: 4px;
            font-family: monospace;
            margin: 1rem 0;
            overflow-x: auto;
        }

        .code-block {
            background-color: #f4f4f4;
            border-left: 4px solid var(--primary);
            padding: 1rem;
            margin: 1rem 0;
            font-family: monospace;
            overflow-x: auto;
        }

        .demo-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin-top: 2rem;
        }

        @media (max-width: 768px) {
            .demo-section {
                grid-template-columns: 1fr;
            }
        }

        .input-group {
            margin-bottom: 1rem;
        }

        label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: bold;
        }

        input {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
        }

        button {
            background-color: var(--primary);
            color: white;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s;
        }

        button:hover {
            background-color: var(--primary-dark);
        }

        #map {
            height: 400px;
            border-radius: 8px;
            margin-top: 1rem;
        }

        .result {
            margin-top: 1rem;
            padding: 1rem;
            background-color: #f4f4f4;
            border-radius: 4px;
            display: none;
        }

        footer {
            background-color: var(--secondary);
            color: white;
            padding: 2rem 0;
            margin-top: auto;
        }

        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
        }

        .footer-section {
            flex: 1;
            min-width: 250px;
        }

        .footer-section h3 {
            color: var(--light);
            margin-bottom: 1rem;
            font-size: 1.2rem;
        }

        .footer-section p {
            margin-bottom: 0.5rem;
        }

        .footer-section a {
            color: var(--light);
            text-decoration: none;
            transition: color 0.3s;
        }

        .footer-section a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            text-align: center;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }


        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .feature {
            text-align: center;
            padding: 1.5rem;
        }

        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }