// Tâmia © 2013 Artem Sapegin http://sapegin.me
// Links

//
// Configuration
//

// Link style (default: underline).
//
// Values:
// - underline - text-decoration:underline.
// - border - border-bottom:1px solid.
// - gradient - Uses CSS gradients to position line under text (cannot change line color on hover).
link_style ?= "underline"

// Link color (default: #1978c8).
link_color ?= #1978c8

// Visited link color.
visited_color ?= link_color

// Hovered link color.
hover_color ?= link_color

// Link underline color.
link_underline_color ?= rgba(link_color,.4)

// Visited link underline color.
visited_underline_color ?= rgba(visited_color,.4)

// Hovered link underline color.
hover_underline_color ?= rgba(hover_color,.4)

// Link underline position (only when link_style == gradient, default: 80%)
link_underline_position ?= 80%
link_underline_position = 76.5% if link_style == "underline"

// Pressable links (shifts down by 1px, default: false).
link_pressable ?= false


//
// Mixins
//

// Adds link underline (adds nothing for "underline" and "border" types)
link-underline(color)
	if link_style == "gradient"
		background-image: linear-gradient(to right, color, color)

// Adds fake link underline (adds nothing for "underline" type)
link-fake-underline(color)
	if link_style != "border"
		background-image: linear-gradient(to right, color, color 50%, transparent 50%)

// :hover, :active and :focus states of the link.
//
// Example:
// 	 +link-hovers()
//	 	color: #bada55
link-hovers() {
	&:hover,
	&:active,
	&:focus {
		{block}
	}
}

// All states of the link.
//
// Example:
// 	 +link-all-states()
//	 	color: @color
link-all-states() {
	&,
	&:link,
	&:visited,
	&:hover,
	&:active,
	&:focus {
		{block}
	}
}


//
// Classes
//

// Pressable element: pointer cursor + disable text selection.
.pressable-inset
	no-select()
	cursor: pointer

// Pressable element: shifts down by 1px on click.
.pressable
	@extend .pressable-inset
	&:active
		position: relative if link_pressable
		top: 1px if link_pressable

// Non-pressable element: cancels .pressable.
.no-pressable
	&,
	&:hover,
	&:active
		cursor: default
	&:active
		position: static if link_pressable

// Remove underline.
.no-underline
	&,
	&:link,
	&:visited,
	&:hover,
	&:active,
	&:focus
		text-decoration: none
		border-bottom: 0
		background-image: none

// Link.
//
// .link_fake - Pseudo link with dashed underline.
// .link_quoted - Link in quotes (quotes should be colored but not underlined). Example: a.link.link_quoted>u.
.link
	&,
	& u
		@extend .pressable
		transition: border .1s ease-in-out, color .2s ease-in-out, background .2s ease-in-out
		cursor: pointer
		if link_style == "underline"
			text-decoration: underline
		else
			text-decoration: none
		if link_style == "border"
			border-bottom-width: 1px
			border-bottom-style: solid
		if link_style == "gradient"
			background-position: 0 link_underline_position
			background-size: 5px 1px
			background-repeat: repeat-x

	&,
	&:link,
	& u,
	&:link u
		link-underline(link_underline_color)
		color: link_color

	&:visited,
	&:visited u
		link-underline(visited_underline_color)
		color: visited_color

	&:hover,
	&:active,
	&:focus,
	&:hover u,
	&:active u,
	&:focus u
		link-underline(hover_underline_color)
		color: hover_color

	&_fake
		if link_style == "border"
			border-bottom-style: dotted
		if link_style != "gradient"
			text-decoration: none
			background-position: 0 link_underline_position
			background-size: 5px 1px
			background-repeat: repeat-x

		&,
		&:link,
		&:visited
			link-fake-underline(link_underline_color)
			color: link_color

		&:hover,
		&:active,
		&:focus
			link-fake-underline(link_underline_color)
			color: hover_color

	&_quoted
		@extend .no-underline

.no-cssgradients
	.link
		text-decoration: underline
	.link_fake
		text-decoration: none
		border-bottom: 1px dotted