/**
 * Copyright (c) 2016 Weitian LI <liweitianux@live.com>
 * MIT license
 *
 * Stylesheet for the Web UI of "fg21sim"
 *
 * Credit:
 * [1] Milligram:
 *     https://milligram.github.io/
 *     https://github.com/milligram/milligram.github.io
 * [2] Bootstrap:
 *     https://getbootstrap.com/css/
 * [3] Font Awesome:
 *     http://fontawesome.io/
 */


/**
 * Basic styles
 */
body {
    background-color: #e7e7e7;
}

.text-center {
    text-align: center;
}

/**
 * Screen reader only
 * Credit: refs.(2, 3)
 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}


/**
 * Header with fixed navigation banner
 */
header.masthead {
    /* Prevent fixed navigation banner hiding main contents */
    margin-bottom: 7rem;
}


/**
 * Prevent fixed navigation banner hiding anchor target
 *
 * Credit:
 * [1] https://css-tricks.com/hash-tag-links-padding/
 * [2] http://nicolasgallagher.com/jump-links-and-viewport-positioning/demo/
 *
 * FIXME: this invisible element overlaps above visible elements!
 *        may be related to the `milligram` CSS framework ??
 */
/*
:target {
    margin-top: -7rem;
    padding-top: 7rem;
    background-clip: content-box;
}
*/


/**
 * Navigation
 */
.navigation {
    background: #f4f5f6;
    border-bottom: 0.1rem solid #d1d1d1;
    display: block;
    width: 100%;
    height: 5.2rem;
    left: 0;
    max-width: 100%;
    position: fixed;
    right: 0;
    top: 0;
    z-index: 100;
}
.navigation .container {
    padding-bottom: 0;
    padding-top: 0;
}
.navigation .logo {
    height: 2rem;
    position: relative;
    top: 0.3rem;
}
.navigation .navigation-title,
.navigation .title,
.navigation .description {
    display: inline;
    position: relative;
    font-size: 1.6rem;
    line-height: 5.2rem;
    padding: 0;
    text-decoration: none;
}
.navigation .title {
    font-size: 2.0rem;
    font-variant: small-caps;
    margin-right: 0.5rem;
}
.navigation .description {
    color: #606c76;
    font-style: italic;
}
.navigation .navigation-list {
    list-style: none;
    margin-bottom: 0;
}
.navigation .navigation-item {
    float: left;
    margin-bottom: 0;
    margin-left: 2.5rem;
    position: relative;
}
.navigation .navigation-link {
    display: inline;
    font-size: 1.6rem;
    line-height: 5.2rem;
    padding: 0;
    text-decoration: none;
}
.navigation .navigation-link .active {
    color: #606c76;
}


/**
 * Github stamp at the top-right corner
 */
.github {
    border: 0;
    color: #f4f5f6;
    fill: #9b4dca;
    height: 5.2rem;
    position: fixed;
    right: 0;
    top: 0;
    width: 5.2rem;
    z-index: 100;
}
.github:hover .octo-arm {
    animation:a 0.8s infinite;
}
@keyframes a {
    0%, 50% {
        transform: rotate(0);
    }
    25%, 75% {
        transform: rotate(-25deg);
    }
}


/**
 * Form styles
 */

/* Inline form */
label, legend {
    display: inline-block;
    margin-bottom: 0.5rem;
    line-height: 2.0;
}
.form-inline .form-group {
    display: inline-block;
    margin-bottom: 0;
    vertical-align: middle;
}
.form-inline .form-control {
    display: inline-block;
    width: auto;
    margin-bottom: 0;
    vertical-align: middle;
}
.form-inline .checkboxes {
    display: inline-block;
    margin-bottom: 0;
    vertical-align: middle;
}

/* Checkboxes & Radios */
.checkboxes .legend,
.radios .legend {
    margin-right: 0.5rem;
}
.checkboxes .form-control,
.radios .form-control {
    margin-right: 0.5rem;
}
.checkboxes .form-group label,
.radios .form-group label {
    margin-right: 2.5rem;
    padding-top: 0.2rem;
    font-weight: normal;
}


/**
 * Button styles
 */
button,
.button {
    text-transform: none;
    letter-spacing: 0;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}
.button-small {
    font-size: .8rem;
    height: 2.8rem;
    line-height: 2.8rem;
    padding: 0 1.5rem;
}
.button-large {
    font-size: 1.4rem;
    height: 4.5rem;
    line-height: 4.5rem;
    padding: 0 2rem;
}


/**
 * Horizontal rules
 */
hr {
    margin: 2rem 0;
    border-top-color: #9b4dca;
    border-top-width: 0.2rem;
}
hr.hr-condensed {
    margin: 1rem 0;
}
hr.hr-thin {
    border-top-width: 0.1rem;
}
hr.hr-thick {
    border-top-width: 0.3rem;
}
hr.hr-solid {
    border-top-style: solid;
}
hr.hr-dashed {
    border-top-style: dashed;
}
hr.hr-dotted {
    border-top-style: dotted;
}