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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: #fff;
    color: #000;
    line-height: 1.5;
}

main {
    max-width: 600px;
    margin: 80px auto;
    padding: 0 20px;
}

@media (max-width: 768px) {
    main {
        padding: 0 50px;
    }
}

#input {
    width: 100%;
    padding: 16px 0;
    border: none;
    border-bottom: 1px solid #e0e0e0;
    font-size: 18px;
    outline: none;
    background: transparent;
}

#input::placeholder {
    color: #999;
}

#list {
    list-style: none;
    margin-top: 20px;
}

li {
    display: flex;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid #f5f5f5;
    font-size: 16px;
    cursor: pointer;
    position: relative;
}

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

li.dragging {
    opacity: 0.5;
}

.drag {
    opacity: 0;
    color: #ccc;
    font-size: 16px;
    cursor: grab;
    position: absolute;
    left: -28px;
}

li:hover .drag {
    opacity: 1;
}

li.dragging .drag {
    cursor: grabbing;
}

.check {
    width: 20px;
    height: 20px;
    border: 1px solid #ddd;
    border-radius: 50%;
    margin-right: 16px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

li.done .check {
    border-color: #999;
;
}

li.done .check::before {
    content: '✓';
    color: #999;
}

.text {
    flex: 1;
}

.del {
    opacity: 0;
    color: #ccc;
    font-size: 18px;
    padding: 0 8px;
    cursor: pointer;
    flex-shrink: 0;
}

li:hover .del {
    opacity: 1;
}

.del:hover {
    color: rgb(255, 69, 69);
}

.del {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.del svg {
    display: block;
}