.todo-container {
    width: 320px;
    margin: 60px auto;
    padding: 25px;
    border: 1px solid #ddd;
    border-radius: 10px;
    background-color: #f9f9ff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    font-family: 'Segoe UI', sans-serif;
}

h1 {
    text-align: center;
    color: #4a4e69;
    font-size: 1.6em;
    margin-bottom: 20px;
}

#taskInput {
    width: 70%;
    padding: 8px;
    border: 1px solid #bbb;
    border-radius: 5px;
    outline: none;
    transition: 0.3s;
}

#taskInput:focus {
    border-color: #5f6caf;
    box-shadow: 0 0 5px rgba(95, 108, 175, 0.4);
}

.add-btn {
    background-color: #5f6caf;
    color: #fff;
    border: none;
    margin-top: 5px;
    border-radius: 5px;
    padding: 8px 12px;
    cursor: pointer;
    transition: 0.3s;
}

.add-btn:hover {
    background-color: #40497c;
}

.todo-list {
    list-style-type: none;
    padding: 0;
    margin-top: 20px;
}

li {
    margin: 10px 0;
    padding: 8px 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #fff;
    border: 1px solid #e2e2e2;
    border-radius: 5px;
    transition: 0.3s;
}

li:hover {
    background-color: #eef0ff;
}

li span {
    flex: 1;
    color: #333;
    font-size: 15px;
}

li button {
    margin-left: 10px;
    padding: 6px 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    color: #fff;
    font-size: 13px;
    transition: 0.3s;
}

li button:nth-child(2) {
    background-color: #ffc107;
}
li button:nth-child(2):hover {
    background-color: #e0a800;
}

li button:nth-child(3) {
    background-color: #dc3545;
}
li button:nth-child(3):hover {
    background-color: #b02a37;
}