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

body {
    min-height: 100vh;
    background: #e4e8eb;
    background-image: url("../images/background.jpg");
    background-size: cover;
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: center;
    align-items: center;
    color:rgb(11, 23, 94);
    gap: 30px;
}

main {
    background: #ffffff;
    padding: 20px;
    border-radius: 8px;
    width: 400px;
    box-shadow: 12px 5px 5px rgba(71, 71, 71, 60%);
}

header h1 {
  text-align: center;
  margin-bottom: 15px;
  color:rgb(13, 54, 70);
}

form { 
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

input {
    flex: 1;
    padding: 8px;
    border: none;
    background-color: rgb(216, 247, 247);
}

button {
    padding: 8px 12px;
    cursor: pointer;
    transition: transform 0.3s ease;
    color: white;
    background-color: rgb(240, 100, 7);
    border: none;
    border-radius: 20%;
}

button:hover {
    transform: scale(1.2);
}

ul {
    list-style: none;
}

li {
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid #eee;
    color: rgb(240, 100, 7);;
}

li.completed span {
    text-decoration: line-through;
    color: #999;
}