:root {
    --REGISTER_REG_BORDER_COLOR: gray;
    --REGISTER_REG_ACTIVE_COLOR: cyan;
    --REGISTER_REG_HEAD_COLOR: red;
    --REGISTER_ARROW_HOVER_COLOR: red;
    --REGISTER_INDEX_COLOR: gray;
}

@media (prefers-color-scheme: dark) {
    :root {
	--REGISTER_REG_BORDER_COLOR: orange;
	--REGISTER_REG_ACTIVE_COLOR: pink;
	--REGISTER_REG_HEAD_COLOR: lightblue;
	--REGISTER_ARROW_HOVER_COLOR: lightblue;
	--REGISTER_INDEX_COLOR: orangered;
    }
}

.regset_wrapper {
    overflow: scroll;
    padding: 6px 3px;
}

.register_wrapper {
    display: flex;
    flex-direction: row;
    font-family: monospace;    
    align-items: center;
    padding: 5px 0px;
}

.register_digit_wrapper {
    display: flex;
    flex-direction: row;
    align-items: center;
}

.register_name {
    font-weight: bold;
    padding: 0px 4px;
    min-width: 50px;
}

.register_digit {
    padding: 3px 4px;
    border: 1px solid var(--REGISTER_REG_BORDER_COLOR);
}

.tape_register {
    display: inline-block;
    position: relative;
    padding: 10px;
    border-top: 2px solid var(--REGISTER_REG_BORDER_COLOR);
    border-bottom: 2px solid var(--REGISTER_REG_BORDER_COLOR);
    border-radius: 25%;
    /*box-shadow: 0 0 5px #606060;*/
    width: 40px;
    text-align: center;
    font-size: 15px;
    cursor: pointer;
}

.tape_register:active {
    border-color: var(--REGISTER_REG_ACTIVE_COLOR);
}

.tape_register_active {
    color: var(--REGISTER_REG_HEAD_COLOR);
    border-color: var(--REGISTER_REG_HEAD_COLOR);
}

.tape_register_index {
    font-size: 10px;
    color: var(--REGISTER_INDEX_COLOR);
    position: absolute;
    bottom: 2px;
    left: 5px;
}

.tape_wrapper {
    display: flex;
    flex-direction: row;
    align-items: center;
    width: 100%;
    user-select: none;
    height: min-content;
}

.machine_tape {
    flex-grow: 1;
    padding: 5px 0px;
    overflow: hidden;
    white-space: nowrap;
}

.tape_arrow {
    flex-basis: 30px;
    cursor: pointer;
    text-align: center;
}

.tape_arrow:hover {
    color: var(--REGISTER_ARROW_HOVER_COLOR);
}