/* Base styles */
.todo-list {
    list-style-type: none;
    padding: 0;
    max-width: 600px;
    margin: 20px auto;
    font-family: Arial, sans-serif;
}

.todo-list li {
    background: #afcfec;
    margin-bottom: 10px;
    padding: 15px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.sub-item {
    list-style-type: none;
    padding-left: 20px;
    margin-top: 10px;
}

/* Link styles */
.sub-item-link {
    color: #4a6baf; /* Default color */
    text-decoration: none; /* No underline */
    transition: all 0.3s ease;
}

.sub-item-link:visited {
    color: #8a4baf; /* Visited color */
}

.sub-item-link:hover {
    color: #af4a4a; /* Hover color */
}

.sub-item-link:focus {
    outline: 2px solid #4aaf5e; /* Focus outline */
    outline-offset: 2px;
}

.sub-item-link:active {
    color: #af4a4a; /* Active/click color */
    transform: scale(0.98);
}