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

body {
    font-family: Arial, Helvetica, sans-serif;
    display: flex; 
    justify-content: center; 
    min-height: 100vh;
    background-image: linear-gradient(45deg, #93a5cf 0%, #e4efe9 100%);
    color: #000000;
    margin: 0;
    padding: 0;
    font-size: 18px;
}


.container {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
}

.section-todo {
    background-color: #ffffff;
    border-radius: 8px;
    padding: 12px;
    margin-top: 10px;
    width: 400px;
}

.input-btn {
    margin-top: 14px;
}

.head {
    padding: 5px;
}

h1 {
    font-size: 30px;
    text-align: center;
    font-weight: 600;
    padding-bottom: 10px;
}

input {
    border: 1px solid #D1D5DB;
    border-radius: 8px;
    padding: 12px 16px;
}

.list-group li {
    display: flex;
    justify-content: space-between; 
    align-items: center; 

    border: 1px solid #C4B2EE;
    border-radius: 8px;
    background-color: #C4B2EE;
    color: #FFFFFF;
    list-style: none;
    margin: 5px 0px;
    width: 400px;
    padding: 10px 12px;
}

.list-group li strong {
    flex-grow: 1; 
}

span {
    color: #FFFFFF;
    background-color: red;
    border: 1px solid red;
    padding: 12px 16px;    
    border-radius: 8px;
    cursor: pointer; 
    margin-left: 10px; 
}

span:hover {
    color: red;
    border-radius: 8px;
    border: 1px solid #FFFFFF;
    padding: 12px 16px;    
    background-color: #FFFFFF;
}


.error-message {
    color: white;
    border: 1px solid red;
    border-radius: 8px;
    padding: 12px 16px;    
    margin: 8px 0px;
    background-color: red;
}

button {
  background-color: #FFFFFF;
  border: 1px solid #D1D5DB;
  border-radius: 8px;
  color: #111827;
  font-weight: 600;
  line-height: 20px;
  padding: 12px 16px;
  text-align: center;
  text-decoration: none #D1D5DB solid;
  text-decoration-thickness: auto;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  margin-top: 10px;
  margin-bottom: 10px;
}

button:hover {
  background-color: #F9FAFB;
}

button:focus {
  outline: 2px solid transparent;
  outline-offset: 2px;
}

button:focus-visible {
  box-shadow: none;
}


@media (max-width: 600px) {

    .container {
        margin-top: 20px;
        width: 100%;
        padding: 10px;
    }

    .section-todo {
        width: 100%;
        padding: 10px;
    }

    h1 {
        font-size: 24px;
    }

    input {
        width: 100%;
        padding: 10px;
    }

    .input-btn {
        display: flex;
        flex-direction: column;
    }

    button {
        width: 100%;
        margin-top: 5px;
    }

    .list-group li {
        width: 100%;
        padding: 8px 10px;
    }

    span {
        padding: 8px 10px;
    }
}