/*
    JSPWiki - a JSP-based WikiWiki clone.

    Licensed to the Apache Software Foundation (ASF) under one
    or more contributor license agreements.  See the NOTICE file
    distributed with this work for additional information
    regarding copyright ownership.  The ASF licenses this file
    to you under the Apache License, Version 2.0 (the
    "License"); fyou may not use this file except in compliance
    with the License.  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

    Unless required by applicable law or agreed to in writing,
    software distributed under the License is distributed on an
    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    KIND, either express or implied.  See the License for the
    specific language governing permissions and limitations
    under the License.
*/
/*
Section: Page Navigation
	Uses bootstrap styling with navigation pills, and a dropdown-menu.

DOM Structure:
(start code)
div.row
	ul.nav.nav-pills.pull-left
		li
			a.logo

	ul.nav.nav-pills.pull-right
		li.menu
			a Menu
    	li
    		a Attach
    	li
    		a Info
    	li[.disabled]
    		a Edit
    	li
    		More
    		span.caret
    		ul.dropdown-menu.pull-right
    			...

(end)
*/

// ref. http://updates.html5rocks.com/2012/08/Stick-your-landings-position-sticky-lands-in-WebKit
/*
Note: avoid page-bump when sticky become 'fixed', by adding a spacer with its height

(start code)
    div.sticky(.stickyOn)
        .. content ..
        div.sticky-spacer[style="height:.."] //height calculated by js - same as content
(end)

*/
.sticky {
    display:block;

    + .sticky-spacer { .hide; }

    .pagename {
        font-size: @wiki-logo-font-size;
        line-height: 1;
        .opacity(0);
        .transition(all .5s ease);
    }
}

.stickyOn {
    top: 0;
    z-index: 5;
    position: fixed;
    background: @dropdown-bg;
    .opacity(.9);
    .box-shadow(0 9px 12px -9px rgba(0,0,0,.175));

    + .sticky-spacer { .show; }

    .pagename { .opacity(1); }
}

/* make sure the anchors remains visible, even below the fixed header elements */
.page-content > [id^="section-"]:not(#section-TOC):before {
  display: block;
  content: " ";
  margin-top: -50px; //approximate size of the fixed navigation block
  height: 50px;
  visibility: hidden;
}