* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

.container {
    width: 100%;
    min-height: 100vh;
    background: linear-gradient(110deg, #c8752b, #d7b99e);
    padding: 10px;
}

.todo-app {
    width: 100%;
    max-width: 540px;
    background: #f5f0f0;
    margin: 100px auto 20px;
    padding: 40px 30px 70px;
    border-radius: 10px;
    box-shadow: 5px 5px 15px #353333;
}

.todo-app h2 {
    color: #002765;
    display: flex;
    align-items: center;
    margin-left: 15px;
    margin-bottom: 30px;
}

.todo-app img {
    width: 30px;
    border-radius: 6px;
    margin-left: 15px;
}

.row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #edeef0;
    border-radius: 30px;
    padding-left: 20px;
    margin-bottom: 25px;
}

input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    padding: 10px;
    font-weight: 16px;
    font-size: 14px;
}

button {
    border: none;
    outline: none;
    padding: 16px 50px;
    background: #ff5945;
    color: #edeef0;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 700;
    transition: ease-in-out 0.2s;
    cursor: pointer;
}

button:hover{
    scale: 1.1;
    box-shadow: 1px 1px 5px #353333;
}

ul li {
    list-style: none;
    font-size: 16px;
    padding: 12px 8px 12px 50px;
    user-select: none;
    cursor: pointer;
    position: relative;
}

ul li::before {
    content: '';
    position: absolute;
    height: 28px;
    width: 26px;
    border-radius: 50%;
    background-image: url(./images/unchecked.png);
    background-position: center;
    background-size: cover;
    top: 12px;
    left: 8px;
    height: 20px;
    width: 20px;
}

ul li .checked {
    color: #5555;
    text-decoration: line-through;
}

.checked::before {
    background-image: url(./images/checked.png);

}

ul li span{
    position: absolute;
    right: 0;
    top: 5px;
    width: 40px;
    height: 40px;
    font-size: 22px;
    color: #5555;
    line-height: 40px;
    text-align: center;
    border-radius: 50%;
    transition: ease-in-out 0.2s;
}

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



/* Media Queries for Responsive Design */
@media (max-width: 1200px) {
    .todo-app {
        max-width: 700px;
        padding: 40px 20px 60px;
    }

    .row {
        padding-left: 15px;
        margin-bottom: 20px;
    }

    button {
        padding: 14px 40px;
        font-size: 14px;
    }

    input {
        padding: 8px;
        font-size: 14px;
    }

    ul li {
        font-size: 14px;
        padding: 10px 8px 10px 40px;
    }

    ul li span {
        width: 30px;
        height: 30px;
        font-size: 18px;
        line-height: 30px;
    }
}

@media (max-width: 768px) {
    .todo-app {
        max-width: 90%;
        padding: 30px 20px 50px;
    }

    button {
        padding: 12px 30px;
        font-size: 14px;
    }

    ul li {
        font-size: 14px;
        padding: 10px 8px 10px 40px;
    }

    ul li span {
        width: 30px;
        height: 30px;
        font-size: 18px;
        line-height: 30px;
    }
}

@media (max-width: 480px) {
    .todo-app {
        margin: 50px auto 20px;
        padding: 20px 15px 40px;
    }

    .todo-app h2 {
        margin-left: 10px;
        margin-bottom: 20px;
        font-size: 18px;
    }

    .todo-app img {
        width: 25px;
        margin-left: 10px;
    }

    .row {
        padding-left: 15px;
        margin-bottom: 20px;
    }

    button {
        padding: 10px 20px;
        font-size: 12px;
    }

    input {
        padding: 8px;
        font-size: 12px;
    }

    ul li {
        font-size: 12px;
        padding: 8px 8px 8px 35px;
    }

    ul li span {
        width: 25px;
        height: 25px;
        font-size: 16px;
        line-height: 25px;
    }
}

@media (max-width: 320px) {
    .todo-app {
        margin: 20px auto 10px;
        padding: 15px 10px 30px;
    }

    .todo-app h2 {
        margin-left: 5px;
        margin-bottom: 15px;
        font-size: 16px;
    }

    .todo-app img {
        width: 20px;
        margin-left: 5px;
    }

    .row {
        padding-left: 10px;
        margin-bottom: 15px;
    }

    button {
        padding: 8px 15px;
        font-size: 10px;
    }

    input {
        padding: 6px;
        font-size: 10px;
    }

    ul li {
        font-size: 10px;
        padding: 6px 8px 6px 30px;
    }

    ul li span {
        width: 20px;
        height: 20px;
        font-size: 14px;
        line-height: 20px;
    }
}

@media (max-width: 280px) {
    .todo-app {
        margin: 10px auto 5px;
        padding: 10px 5px 20px;
    }

    .todo-app h2 {
        margin-left: 3px;
        margin-bottom: 10px;
        font-size: 14px;
    }

    .todo-app img {
        width: 18px;
        margin-left: 3px;
    }

    .row {
        padding-left: 8px;
        margin-bottom: 10px;
    }

    button {
        padding: 6px 10px;
        font-size: 8px;
    }

    input {
        padding: 5px;
        font-size: 8px;
    }

    ul li {
        font-size: 8px;
        padding: 5px 8px 5px 25px;
    }

    ul li span {
        width: 18px;
        height: 18px;
        font-size: 12px;
        line-height: 18px;
    }
}