styles.css

body {
    font-family: Arial, sans-serif;
    background: linear-gradient(to right, #6a11cb, #2575fc);
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    max-width: 600px;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    margin-top: 50px;
}

h1 {
    text-align: center;
    color: #cb1717;
    margin-bottom: 30px;
}

.task-input {
    display: flex;
    margin-bottom: 20px;
}

.task-input input {
    flex-grow: 1;
    padding: 10px;
    border: 1px solid #6a11c4;
    border-radius: 4px;
}

.task-input button {
    padding: 10px 20px;
    border: none;
    background-color: #28a745;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    margin-left: 10px;
}

.task-filters {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.task-filters button {
    padding: 8px 15px;
    border: none;
    background-color: #f5f5f5;
    color: #333;
    border-radius: 20px;
    cursor: pointer;
    margin: 0 10px;
}

.task-filters button:hover {
    background-color: #e0e0e0;
}

ul {
    list-style: none;
    padding: 0;
}

li {
    padding: 15px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 16px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

li button {
    background-color: #dc3545;
    border: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    padding: 5px 10px;
}

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