//
// Navbars
// --------------------------------------------------

// Wrapper and base class
//
// Provide a static navbar from which we expand to create full-width, fixed, and
// other navbar variations.

.navbar {
	position: relative;
	min-height: @navbar-height; // Ensure a navbar always shows (e.g., without a .navbar-brand in collapsed mode)
	margin-bottom: @navbar-margin-bottom;
	box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);

	// Prevent floats from breaking the navbar
	&:extend(.clearfix all);

	@media (min-width: @grid-float-breakpoint) {
		border-radius: @navbar-border-radius;
	}

	#main-nav {
		> li {
			> a.navigation-link {
				&:before {
					content: "";
					position: absolute;
					left: 0;
					display: inline-block;
					height: 1.15em;
					width: 100%;
					border-bottom: 2px solid #555555;
					margin-top: 0;
					opacity: 0;
					bottom: 0;
					-webkit-transition: opacity 0.35s, -webkit-transform 0.35s;
					transition: opacity 0.35s, transform 0.35s;
					-webkit-transform: scale(0, 1);
					transform: scale(0, 1);
				}

				&:hover {
					&:before {
						opacity: 1;
						-webkit-transform: scale(1);
						transform: scale(1);
					}
				}
			}

			&.active {
				> a.navigation-link {
					&:before {
						opacity: 1;
						-webkit-transform: scale(1);
						transform: scale(1);
					}
				}
			}
		}
	}
}

// Navbar heading
//
// Groups `.navbar-brand` and `.navbar-toggle` into a single component for easy
// styling of responsive aspects.

.navbar-header {
	&:extend(.clearfix all);

	@media (min-width: @grid-float-breakpoint) {
		float: left;
	}
}

// Navbar collapse (body)
//
// Group your navbar content into this for easy collapsing and expanding across
// various device sizes. By default, this content is collapsed when <768px, but
// will expand past that for a horizontal display.
//
// To start (on mobile devices) the navbar links, forms, and buttons are stacked
// vertically and include a `max-height` to overflow in case you have too much
// content for the user's viewport.

.navbar-collapse {
	overflow-x: visible;
	padding-right: @navbar-padding-horizontal;
	padding-left: @navbar-padding-horizontal;
	border-top: 1px solid transparent;
	box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
	&:extend(.clearfix all);
	-webkit-overflow-scrolling: touch;

	&.in {
		overflow-y: auto;
	}

	@media (min-width: @grid-float-breakpoint) {
		width: auto;
		border-top: 0;
		box-shadow: none;

		&.collapse {
			display: block !important;
			height: auto !important;
			padding-bottom: 0; // Override default setting
			overflow: visible !important;
		}

		&.in {
			overflow-y: visible;
		}

		// Undo the collapse side padding for navbars with containers to ensure
		// alignment of right-aligned contents.
		.navbar-fixed-top &,
		.navbar-static-top &,
		.navbar-fixed-bottom & {
			padding-left: 0;
			padding-right: 0;
		}
	}
}

.navbar-fixed-top,
.navbar-fixed-bottom {
	.navbar-collapse {
		max-height: @navbar-collapse-max-height;

		@media (max-device-width: @screen-xs-min) and (orientation: landscape) {
			max-height: 200px;
		}
	}
}

// Both navbar header and collapse
//
// When a container is present, change the behavior of the header and collapse.

.container,
.container-fluid {
	> .navbar-header,
	> .navbar-collapse {
		margin-right: -@navbar-padding-horizontal;
		margin-left: -@navbar-padding-horizontal;

		@media (min-width: @grid-float-breakpoint) {
			margin-right: 0;
			margin-left: 0;
		}
	}
}

//
// Navbar alignment options
//
// Display the navbar across the entirety of the page or fixed it to the top or
// bottom of the page.

// Static top (unfixed, but 100% wide) navbar
.navbar-static-top {
	z-index: @zindex-navbar;
	border-width: 0 0 1px;

	@media (min-width: @grid-float-breakpoint) {
		border-radius: 0;
	}
}

// Fix the top/bottom navbars when screen real estate supports it
.navbar-fixed-top,
.navbar-fixed-bottom {
	position: fixed;
	right: 0;
	left: 0;
	z-index: @zindex-navbar-fixed;

	// Undo the rounded corners
	@media (min-width: @grid-float-breakpoint) {
		border-radius: 0;
	}
}
.navbar-fixed-top {
	top: 0;
	border-width: 0 0 1px;
}
.navbar-fixed-bottom {
	bottom: 0;
	margin-bottom: 0; // override .navbar defaults
	border-width: 1px 0 0;
}

// Brand/project name

.navbar-brand {
	float: left;
	padding: @navbar-padding-vertical @navbar-padding-horizontal;
	font-size: @font-size-large;
	line-height: @line-height-computed;
	height: @navbar-height;

	&:hover,
	&:focus {
		text-decoration: none;
	}

	> img {
		display: block;
	}

	@media (min-width: @grid-float-breakpoint) {
		.navbar > .container &,
		.navbar > .container-fluid & {
			margin-left: -@navbar-padding-horizontal;
		}
	}
}

// Navbar toggle
//
// Custom button for toggling the `.navbar-collapse`, powered by the collapse
// JavaScript plugin.

.navbar-toggle {
	position: relative;
	float: right;
	margin-right: @navbar-padding-horizontal;
	padding: 9px 10px;
	.navbar-vertical-align(34px);
	background-color: transparent;
	background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
	border: 1px solid transparent;
	border-radius: @border-radius-base;

	// We remove the `outline` here, but later compensate by attaching `:hover`
	// styles to `:focus`.
	&:focus {
		outline: 0;
	}

	// Bars
	.icon-bar {
		display: block;
		width: 22px;
		height: 2px;
		border-radius: 1px;
	}
	.icon-bar + .icon-bar {
		margin-top: 4px;
	}

	@media (min-width: @grid-float-breakpoint) {
		display: none;
	}
}

// Navbar nav links
//
// Builds on top of the `.nav` components with its own modifier class to make
// the nav the full height of the horizontal nav (above 768px).

.navbar-nav {
	margin: (@navbar-padding-vertical / 2) -@navbar-padding-horizontal;

	> li > a {
		padding-top: 10px;
		padding-bottom: 10px;
		line-height: @line-height-computed;
	}

	@media (max-width: @grid-float-breakpoint-max) {
		// Dropdowns get custom display when collapsed
		.open .dropdown-menu {
			position: static;
			float: none;
			width: auto;
			margin-top: 0;
			background-color: transparent;
			border: 0;
			box-shadow: none;
			> li > a,
			.dropdown-header {
				padding: 5px 15px 5px 25px;
			}
			> li > a {
				line-height: @line-height-computed;
				&:hover,
				&:focus {
					background-image: none;
				}
			}
		}
	}

	// Uncollapse the nav
	@media (min-width: @grid-float-breakpoint) {
		float: left;
		margin: 0;

		> li {
			float: left;
			> a {
				padding-top: @navbar-padding-vertical;
				padding-bottom: @navbar-padding-vertical;
			}
		}
	}
}

// Navbar form
//
// Extension of the `.form-inline` with some extra flavor for optimum display in
// our navbars.

.navbar-form {
	margin-left: -@navbar-padding-horizontal;
	margin-right: -@navbar-padding-horizontal;
	padding: 10px @navbar-padding-horizontal;
	border-top: 1px solid transparent;
	border-bottom: 1px solid transparent;
	@shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1), 0 1px 0 rgba(255, 255, 255, 0.1);
	.box-shadow(@shadow);
	margin-top: 7px;

	// .navbar-vertical-align(@input-height-base);

	.form-group {
		@media (max-width: @grid-float-breakpoint-max) {
			margin-bottom: 5px;

			&:last-child {
				margin-bottom: 0;
			}
		}
	}

	// Undo 100% width for pull classes
	@media (min-width: @grid-float-breakpoint) {
		width: auto;
		border: 0;
		margin-left: 0;
		margin-right: 0;
		padding-top: 0;
		padding-bottom: 0;
		.box-shadow(none);
	}
}

// Dropdown menus

// Menu position and menu carets
.navbar-nav > li > .dropdown-menu {
	margin-top: 0;
	.border-top-radius(0);
}
// Menu position and menu caret support for dropups via extra dropup class
.navbar-fixed-bottom .navbar-nav > li > .dropdown-menu {
	margin-bottom: 0;
	.border-top-radius(@navbar-border-radius);
	.border-bottom-radius(0);
}

// Buttons in navbars
//
// Vertically center a button within a navbar (when *not* in a form).

.navbar-btn {
	.navbar-vertical-align(@input-height-base);

	&.btn-sm {
		.navbar-vertical-align(@input-height-small);
	}
	&.btn-xs {
		.navbar-vertical-align(22);
	}
}

// Text in navbars
//
// Add a class to make any element properly align itself vertically within the navbars.

.navbar-text {
	.navbar-vertical-align(@line-height-computed);

	@media (min-width: @grid-float-breakpoint) {
		float: left;
		margin-left: @navbar-padding-horizontal;
		margin-right: @navbar-padding-horizontal;
	}
}

// Component alignment
//
// Repurpose the pull utilities as their own navbar utilities to avoid specificity
// issues with parents and chaining. Only do this when the navbar is uncollapsed
// though so that navbar contents properly stack and align in mobile.
//
// Declared after the navbar components to ensure more specificity on the margins.

@media (min-width: @grid-float-breakpoint) {
	.navbar-left {
		.pull-left();
	}
	.navbar-right {
		.pull-right();
		margin-right: -@navbar-padding-horizontal;

		~ .navbar-right {
			margin-right: 0;
		}
	}
}

// Alternate navbars
// --------------------------------------------------

// Default navbar
.navbar-default {
	background-color: @navbar-default-bg;
	border-color: @navbar-default-border;

	.navbar-brand {
		color: @navbar-default-brand-color;
		&:hover,
		&:focus {
			color: @navbar-default-brand-hover-color;
			background-color: @navbar-default-brand-hover-bg;
		}
	}

	.navbar-text {
		color: @navbar-default-color;
	}

	.navbar-nav {
		> li > a {
			color: @navbar-default-link-color;

			&:hover,
			&:focus {
				color: @navbar-default-link-hover-color;
				background-color: @navbar-default-link-hover-bg;
			}
		}
		> .active > a {
			&,
			&:hover,
			&:focus {
				color: @navbar-default-link-active-color;
				background-color: @navbar-default-link-active-bg;
			}
		}
		> .disabled > a {
			&,
			&:hover,
			&:focus {
				color: @navbar-default-link-disabled-color;
				background-color: @navbar-default-link-disabled-bg;
			}
		}
	}

	.navbar-toggle {
		border-color: @navbar-default-toggle-border-color;
		&:hover,
		&:focus {
			background-color: @navbar-default-toggle-hover-bg;
		}
		.icon-bar {
			background-color: @navbar-default-toggle-icon-bar-bg;
		}
	}

	.navbar-collapse,
	.navbar-form {
		border-color: @navbar-default-border;
	}

	// Dropdown menu items
	.navbar-nav {
		// Remove background color from open dropdown
		> .open > a {
			&,
			&:hover,
			&:focus {
				background-color: @navbar-default-link-active-bg;
				color: @navbar-default-link-active-color;
			}
		}

		@media (max-width: @grid-float-breakpoint-max) {
			// Dropdowns get custom display when collapsed
			.open .dropdown-menu {
				> li > a {
					color: @navbar-default-link-color;
					&:hover,
					&:focus {
						color: @navbar-default-link-hover-color;
						background-color: @navbar-default-link-hover-bg;
					}
				}
				> .active > a {
					&,
					&:hover,
					&:focus {
						color: @navbar-default-link-active-color;
						background-color: @navbar-default-link-active-bg;
					}
				}
				> .disabled > a {
					&,
					&:hover,
					&:focus {
						color: @navbar-default-link-disabled-color;
						background-color: @navbar-default-link-disabled-bg;
					}
				}
			}
		}
	}

	// Links in navbars
	//
	// Add a class to ensure links outside the navbar nav are colored correctly.

	.navbar-link {
		color: @navbar-default-link-color;
		&:hover {
			color: @navbar-default-link-hover-color;
		}
	}

	.btn-link {
		color: @navbar-default-link-color;
		&:hover,
		&:focus {
			color: @navbar-default-link-hover-color;
		}
		&[disabled],
		fieldset[disabled] & {
			&:hover,
			&:focus {
				color: @navbar-default-link-disabled-color;
			}
		}
	}
}

// Inverse navbar

.navbar-inverse {
	background-color: @navbar-inverse-bg;
	border-color: @navbar-inverse-border;

	.navbar-brand {
		color: @navbar-inverse-brand-color;
		&:hover,
		&:focus {
			color: @navbar-inverse-brand-hover-color;
			background-color: @navbar-inverse-brand-hover-bg;
		}
	}

	.navbar-text {
		color: @navbar-inverse-color;
	}

	.navbar-nav {
		> li > a {
			color: @navbar-inverse-link-color;

			&:hover,
			&:focus {
				color: @navbar-inverse-link-hover-color;
				background-color: @navbar-inverse-link-hover-bg;
			}
		}
		> .active > a {
			&,
			&:hover,
			&:focus {
				color: @navbar-inverse-link-active-color;
				background-color: @navbar-inverse-link-active-bg;
			}
		}
		> .disabled > a {
			&,
			&:hover,
			&:focus {
				color: @navbar-inverse-link-disabled-color;
				background-color: @navbar-inverse-link-disabled-bg;
			}
		}
	}

	// Darken the responsive nav toggle
	.navbar-toggle {
		border-color: @navbar-inverse-toggle-border-color;
		&:hover,
		&:focus {
			background-color: @navbar-inverse-toggle-hover-bg;
		}
		.icon-bar {
			background-color: @navbar-inverse-toggle-icon-bar-bg;
		}
	}

	.navbar-collapse,
	.navbar-form {
		border-color: darken(@navbar-inverse-bg, 7%);
	}

	// Dropdowns
	.navbar-nav {
		> .open > a {
			&,
			&:hover,
			&:focus {
				background-color: @navbar-inverse-link-active-bg;
				color: @navbar-inverse-link-active-color;
			}
		}

		@media (max-width: @grid-float-breakpoint-max) {
			// Dropdowns get custom display
			.open .dropdown-menu {
				> .dropdown-header {
					border-color: @navbar-inverse-border;
				}
				.divider {
					background-color: @navbar-inverse-border;
				}
				> li > a {
					color: @navbar-inverse-link-color;
					&:hover,
					&:focus {
						color: @navbar-inverse-link-hover-color;
						background-color: @navbar-inverse-link-hover-bg;
					}
				}
				> .active > a {
					&,
					&:hover,
					&:focus {
						color: @navbar-inverse-link-active-color;
						background-color: @navbar-inverse-link-active-bg;
					}
				}
				> .disabled > a {
					&,
					&:hover,
					&:focus {
						color: @navbar-inverse-link-disabled-color;
						background-color: @navbar-inverse-link-disabled-bg;
					}
				}
			}
		}
	}

	.navbar-link {
		color: @navbar-inverse-link-color;
		&:hover {
			color: @navbar-inverse-link-hover-color;
		}
	}

	.btn-link {
		color: @navbar-inverse-link-color;
		&:hover,
		&:focus {
			color: @navbar-inverse-link-hover-color;
		}
		&[disabled],
		fieldset[disabled] & {
			&:hover,
			&:focus {
				color: @navbar-inverse-link-disabled-color;
			}
		}
	}
}