* {
            margin: 0;
            padding: 0;
            font-family: Arial, sans-serif;
            box-sizing: border-box;
        }

        .container {
            width: 100%;
            min-height: 100vh;
            background: linear-gradient(142deg, #df0d0d, #145fd0);
            padding: 10px;
        }

        .todo {
            width: 100%;
            max-width: 50%;
            background-color: #fff;
            border-radius: 10px;
            margin: 100px auto 20px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
            padding: 40px 30px 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: flex-start;
        }

        .todo h2 {
            color: #000000;
            display: flex;
            align-items: center;
            text-align: center;
            margin-bottom: 20px;
        }

        .todo img {
            width: 50px;
            height: 50px;
            margin-left: 10px;
        }

        .row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background-color: #798aa4;
            border-radius: 30px;
            padding-left: 30px;
            margin-bottom: 25px;
            width: 100%;
            max-width: 400px;
        }

        input {
            flex: 1;
            padding: 10px;
            border: none;
            border-radius: 30px;
            outline: none;
            font-size: 16px;
            background: transparent;
            color: #fff;
        }

        input::placeholder {
            color: #cce0ff;
        }

        button {
            padding: 16px 20px;
            border: none;
            border-radius: 30px;
            background: #f28500ad;
            color: #fafbfc;
            font-weight: bold;
            cursor: pointer;
            margin-left: 10px;
        }

        ul {
            width: 100%;
            max-width: 400px;
            padding-left: 0;
        }

        ul li {
            list-style: none;
            padding: 10px 40px 10px 50px;
            margin: 10px 0;
            background-color: #f0f0f0;
            border-radius: 5px;
            transition: background-color 0.3s ease;
            user-select: none;
            cursor: pointer;
            position: relative;
            font-size: 20px;
            line-height: 28px;
            min-height: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        ul li::before {
            content: "";
            position: absolute;
            height: 28px;
            width: 28px;
            border-radius: 50%;
            background-image: url('Resources/unchecked.png');
            background-size: cover;
            background-position: center;
            top: 50%;
            left: 10px;
            transform: translateY(-50%);
        }

        ul li.checked {
           color: grey;
           text-decoration: line-through;
        }
        ul li.checked::before {
            background-image: url('Resources/checked.png');
        }

        .close {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 22px;
            color: #888;
            cursor: pointer;
            background: none;
            border: none;
            outline: none;
            padding: 0 5px;
            transition: color 0.2s;
        }
        .close:hover {
            color: #df0d0d;
        }