body {
    min-height: 100vh;
    background: linear-gradient(134deg, #5672fe, #222f45);
    display: flex;
    justify-content: center;
    font-family: 'Poppins', sans-serif;
}

.todo-app {
    background: #ffffff;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.15);
    border-radius: 15px;
}


i{
    margin-left: 10px;
}

.input-group {
    display: flex;
    align-items: stretch;
}

input {
    border: 2px solid #ddd;
    border-right: none;
    border-radius: 10px 0 0 10px;
    padding: 10px;
    font-size: 16px;
    flex: 1;
}

button {
    background: linear-gradient(134deg, #f79000, #fa9e58);
    color: #ffffff;
    font-size: 16px;
    padding: 10px 20px;
    border-radius: 0 10px 10px 0;
    border: none;
    transition: background 0.3s ease;
    cursor: pointer;
}

button:hover {
    background: linear-gradient(134deg, #fa9e58, #f79000);
}

ul li {
    list-style: none;
    font-size: 17px;
    font-weight: bold;
    padding: 12px 8px 12px 50px;
    user-select: none;
    cursor: pointer;
    position: relative;
}

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

ul li.checked {
    color: #555555;
    text-decoration: line-through;
}

ul li.checked::before {
    background-image: url(/media/images/checked.png);
}

ul li span {
    position: absolute;
    right: 0;
    top: 10px;
    width: 40px;
    height: 40px;
    font-size: 22px;
    color: #ff5945;
    line-height: 40px;
    text-align: center;
}

ul li span:hover {
    background: #edeef0;
}