button,
.button {
    @apply relative inline-flex items-center cursor-pointer gap-2 rounded-md h-11 px-4 text-lg font-medium;
    transition: background-color 125ms ease-in-out;
    --button-border: var(--color-primary);
    --button-accent: var(--color-primary-hover);

    &.button--primary {
        @apply bg-cyan-400 border-md border-solid;
        border-color: var(--button-border);
        box-shadow: 2.5px 2.5px 0 0 var(--button-border);

        &:hover {
            @apply bg-cyan-500;
            border-color: var(--button-accent);
        }

        &:focus {
            box-shadow: none;
            left: 2.5px;
            top: 2.5px;
        }
    }

    &.button--icon {
        @apply justify-center p-0 h-12 top-px rounded-blob;
        aspect-ratio: 1 / 1;

        &:hover {
            background-color: rgba(0,0,0,0.075);
        }
    }

    &.button--sm {
        @apply text-base px-2 h-8;
    }
}

/* button groups are used with labels/checks as well as regular buttons */
.button-group {
    @apply relative flex flex-row items-center p-0 m-0 h-11 max-h-11 rounded-md;
    box-shadow: 2.5px 2.5px 0 0 var(--color-primary);

    > label,
    > button {
        @apply relative flex items-center justify-center h-full pl-3.5 pr-3 cursor-pointer;
        @apply border-md border-primary border-l-0 font-medium rounded-none;
        transition: background-color 100ms ease-in-out;

        &:hover {
            @apply bg-cyan-200;
        }

        &:has(input:checked),
        &:active {
            @apply bg-cyan-400 border-r-transparent;
            box-shadow:
                inset 2.5px 0 0 0 var(--color-primary),
                inset 0 0.25rem 0 0 var(--color-cyan-500);
            top: 2.5px;

            + label,
            + button {
                box-shadow: inset 1.5px 0 0 0 var(--color-primary);
            }

            &:hover {
                @apply bg-cyan-500;
            }
        }

        &:first-child {
            @apply rounded-l-md border-l-md;

            &:has(input:checked),
            &:active {
                box-shadow: inset 0 0.25rem 0 0 var(--color-cyan-500);
            }
        }

        &:last-child {
            @apply border-r-md rounded-r-md;

            &:has(input:checked),
            &:active {
                @apply border-r-primary;
            }
        }
    }

    > label {
        > input[type="radio"] {
            @apply hidden absolute top-0 left-0 w-0 h-0 max-w-0 max-h-0;
        }
    }

    &:has(> :last-child input:checked),
    &:has(> :last-child:active) {
        box-shadow: 1.5px 4.5px 0 -2px var(--color-primary);
    }
}