Modern Gradient Radio Button

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Modern Gradient Radio Button</title>
    <style>
        body {
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
            background: #e3f2fd;
            font-family: 'Arial', sans-serif;
        }
        .radio-container {
            display: flex;
            align-items: center;
        }
        .radio-button {
            appearance: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #ffffff;
            box-shadow: inset 2px 2px 3px rgba(255, 255, 255, .6), 
                        inset -2px -2px 3px rgba(0, 0, 0, .6);
            border: 2px solid #cfd8dc;
            outline: none;
            position: relative;
            cursor: pointer;
            transition: all 0.3s ease;
            background-image: linear-gradient(to top left, rgba(0, 0, 0, .2), rgba(0, 0, 0, .2) 30%, rgba(0, 0, 0, 0));
        }
        .radio-button:checked {
            background: #b2dfdb;
            border-color: #80cbc4;
            box-shadow: inset 2px 2px 3px rgba(255, 255, 255, .4), 
                        inset -2px -2px 3px rgba(0, 0, 0, .4);
        }
        .radio-button:checked::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: #004d40;
            transform: translate(-50%, -50%);
        }
        .radio-label {
            margin-left: 14px;
            font-size: 18px;
            color: #000;
            cursor: pointer;
        }
    </style>
</head>
<body>
    <div class="radio-container">
        <input type="radio" id="modernRadio" name="radio-group" class="radio-button">
        <label for="modernRadio" class="radio-label">Option 1</label>
        <input type="radio" id="modernRadio" name="radio-group" class="radio-button">
        <label for="modernRadio" class="radio-label">Option 2</label>
        <input type="radio" id="modernRadio" name="radio-group" class="radio-button">
        <label for="modernRadio" class="radio-label">Option 3</label>
    </div>
</body>
</html>

Modern Gradient Radio Button - MeggiTools