/**
 * Removed the fixed px font-size on the html element in order to respect
 * browser settings users may have customized.
 *
 * For reference, I've left some comments with the effective font-size of
 * rem-based sizes, presuming a browser default of 16px base font-size.
 *
 * @see https://zellwk.com/blog/rem-vs-em/
 **/

* { box-sizing: border-box; }

html {
    background: #fff;
    height: 100%;
}

body {
    margin: 0;
    min-height: 100%;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.7;
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

/**
 * Begin Form CSS from Marx CSS
 *
 * @license MIT © Matthew Blode
 * @see https://github.com/mblode/marx
 **/
input[type="text"],
input[type="password"],
input[type="email"],
input[type="url"],
input[type="date"],
input[type="month"],
input[type="time"],
input[type="datetime"],
input[type="datetime-local"],
input[type="week"],
input[type="number"],
input[type="search"],
input[type="tel"],
select,
textarea {
    background: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 4px;
    color: rgba(0, 0, 0, 0.8);
    display: block;
    width: 100%;
    font-size: 1rem;
    padding: 8px 16px;
    line-height: 1.5;
    -webkit-transition: border-color .15s ease-in-out, -webkit-box-shadow .15s ease-in-out;
    transition: border-color .15s ease-in-out, -webkit-box-shadow .15s ease-in-out;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out, -webkit-box-shadow .15s ease-in-out;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; }

input[type="color"] {
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 4px;
    display: inline-block;
    vertical-align: middle; }

input:not([type]) {
    -webkit-appearance: none;
    background: #fff;
    background-clip: padding-box;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 4px;
    color: rgba(0, 0, 0, 0.8);
    display: block;
    width: 100%;
    padding: 8px 16px;
    line-height: 1.5;
    -webkit-transition: border-color .15s ease-in-out, -webkit-box-shadow .15s ease-in-out;
    transition: border-color .15s ease-in-out, -webkit-box-shadow .15s ease-in-out;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out;
    transition: border-color .15s ease-in-out, box-shadow .15s ease-in-out, -webkit-box-shadow .15s ease-in-out;
    text-align: left; }

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="date"]:focus,
input[type="month"]:focus,
input[type="time"]:focus,
input[type="datetime"]:focus,
input[type="datetime-local"]:focus,
input[type="week"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
input[type="tel"]:focus,
input[type="color"]:focus,
select:focus,
textarea:focus {
    background-color: #fff;
    border-color: #80bdff;
    outline: 0;
    -webkit-box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
                    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25); }

input:not([type]):focus {
    background-color: #fff;
    border-color: #80bdff;
    outline: 0;
    -webkit-box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
                    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25); }

input[type="file"]:focus,
input[type="radio"]:focus,
input[type="checkbox"]:focus {
    outline: 1px thin rgba(0, 0, 0, 0.12); }

input[type="text"][disabled],
input[type="password"][disabled],
input[type="email"][disabled],
input[type="url"][disabled],
input[type="date"][disabled],
input[type="month"][disabled],
input[type="time"][disabled],
input[type="datetime"][disabled],
input[type="datetime-local"][disabled],
input[type="week"][disabled],
input[type="number"][disabled],
input[type="search"][disabled],
input[type="tel"][disabled],
input[type="color"][disabled],
select[disabled],
textarea[disabled] {
    background-color: rgba(0, 0, 0, 0.12);
    color: rgba(0, 0, 0, 0.54);
    cursor: not-allowed;
    opacity: 1; }

input:not([type])[disabled] {
    background-color: rgba(0, 0, 0, 0.12);
    color: rgba(0, 0, 0, 0.54);
    cursor: not-allowed;
    opacity: 1; }

input[readonly],
select[readonly],
textarea[readonly] {
    border-color: rgba(0, 0, 0, 0.12);
    color: rgba(0, 0, 0, 0.54); }

input:focus:invalid,
textarea:focus:invalid,
select:focus:invalid {
    border-color: #ea1c0d;
    color: #f44336; }

input[type="file"]:focus:invalid:focus,
input[type="radio"]:focus:invalid:focus,
input[type="checkbox"]:focus:invalid:focus {
    outline-color: #f44336; }

select {
    border: 1px solid rgba(0, 0, 0, 0.12);
    vertical-align: sub; }

select:not([size]):not([multiple]) {
    height: -webkit-calc(2.25rem + 2px);
    height: calc(2.25rem + 2px); }

select[multiple] {
    height: auto; }

label {
    display: inline-block;
    line-height: 2; }

fieldset {
    border: 0;
    margin: 0;
    padding: 8px 0; }

legend {
    border-bottom: 1px solid rgba(0, 0, 0, 0.12);
    color: rgba(0, 0, 0, 0.8);
    display: block;
    margin-bottom: 8px;
    padding: 8px 0;
    width: 100%; }

textarea {
    overflow: auto;
    resize: vertical; }

input[type=checkbox],
input[type=radio] {
    -webkit-box-sizing: border-box;
                    box-sizing: border-box;
    padding: 0;
    display: inline; }

input[type=submit],
input[type=reset],
input[type=button],
button {
    background-color: #2C8166;
    border: #2C8166;
    border-radius: 4px;
    color: #fff;
    padding: 8px 16px;
    display: inline-block;
    font-weight: 400;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    -webkit-user-select: none;
         -moz-user-select: none;
            -ms-user-select: none;
                    user-select: none;
    border: 1px solid transparent;
    font-size: 1rem;
    line-height: 1.5;
    -webkit-transition: color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, -webkit-box-shadow .15s ease-in-out;
    transition: color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, -webkit-box-shadow .15s ease-in-out;
    transition: color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out;
    transition: color .15s ease-in-out, background-color .15s ease-in-out, border-color .15s ease-in-out, box-shadow .15s ease-in-out, -webkit-box-shadow .15s ease-in-out; }

input[type=submit]::-moz-focus-inner,
input[type=reset]::-moz-focus-inner,
input[type=button]::-moz-focus-inner,
button::-moz-focus-inner {
    padding: 0; }

input[type=submit]:hover,
input[type=reset]:hover,
input[type=button]:hover,
button:hover {
    background-color: #236852;
    border-color: #308e70;
    color: #fff; }

input[type=submit]:not(:disabled):active,
input[type=reset]:not(:disabled):active,
input[type=button]:not(:disabled):active,
button:not(:disabled):active {
    background-color: #308e70;
    border-color: #005cbf;
    color: #fff; }

input[type=submit]:focus,
input[type=reset]:focus,
input[type=button]:focus,
button:focus {
    outline: 0;
    -webkit-box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.5);
                    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.5); }

input[type=submit]:disabled,
input[type=reset]:disabled,
input[type=button]:disabled,
button:disabled {
    opacity: .65;
    cursor: not-allowed;
    background-color: #007bff;
    border-color: #007bff;
    color: #fff; }
/**
 * End Form CSS from Marx CSS
 **/

a:link, a:visited, a:hover {
    color: #2C8166;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

pre {
    white-space: pre-wrap;
}

header,
main,
.container {
    margin: 0 auto;
    max-width: 800px;
    width: 100%;
}

main {
    flex-grow: 1;
    padding-inline: 1rem; /*1.3rem 1rem;*/
}

header,
main,
footer {
    flex-shrink: 0;
}

.masthead {
    display: flex;
    align-items: center;
    border-bottom: 0.188rem solid #c1d7e1; /* effective 3px */
}

    .masthead img {
        max-width: 4.688rem; /* effective 75px */
        margin-right: 0.625rem; /* effective 10px */
        flex: 0 0 4.688rem;
    }

    .masthead h1 {
        font-size: 2.5rem; /* effective 40px */
        font-weight: 700;
        margin: 1.625rem 0;
    }

.tagline {
    font-size: 1.375rem;  /* effective 22px */
}

header {
    display: flex;
    align-items: center;
    font-size: 1.375rem; /* effective 22px */
    font-weight: 500;
    line-height: 1;
    padding-top: 0.5rem;
    border-bottom: 2px #ddd solid;
}

    header > a:first-child {
        flex: 0 0 4.688rem; /* effective 75px */
        margin-right: 1rem;
    }

    header img {
        max-width: 7.5rem;
        max-height: 7.5rem;
    }

footer {
    border-top: 2px solid #2C8166;
    margin-top: 3rem;
    padding: 1rem 1rem 3rem;
    background: #FAFAFA;
    text-align: center;
}

footer ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    text-align: center
}

    footer li {
        display: inline-block;
    }

    footer li a:link, footer li a:link,footer li a:hover {
        display: inline-block;
        padding: 0.5rem 1rem;
        text-decoration: none;
    }

    footer li a:hover {
        background-color: #2C8166;
        color: #eee;
    }

.user-bar {
    padding-block: 0.5rem;
    text-align: right;
}

.one-line-form,
.sign-in {
    display: flex;
}

    .one-line-form > select:first-child,
    .one-line-form > input:first-child,
    .sign-in > input:first-child {
        margin-right: 1rem;
    }

.entries-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

    .older {}

    .newer {
        text-align: right;
    }

.logo-text-book {
    color: #2C8166;
}

.callout {
    padding: 2rem;
    margin: 2rem 0;
    border: 1px solid #c1d7e1;
    border-left-width: 0.5rem;
    border-radius: 0.3rem;
}

.alert {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 4px;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

.alert-warning {
    color: #8a6d3b;
    background-color: #fcf8e3;
    border-color: #faebcc;
}

.util-full-width {
    width: 100%;
}

.mb-1 {
    margin-bottom: 1em;
}

.attention {
    color: #c00;
}

.help-block {
    color: #555;
    display: block;
    font-size: 0.875em; /* effective 14px */
}

.entries {
    list-style-type: none;
    padding-left: 0;
}

    .entries li {
        box-shadow: 0px 0px 8px 0px rgba(0,0,0,0.5);
        margin-bottom: 2.5rem;
    }

.author {
    display: flex;
    background-color: #c1d7e1;
    border-bottom: 1px #B0C4CD solid;
    padding: 1rem;
}

    .author > a {
        flex: 0 0 5rem;
        max-width: 5rem;
        margin-right: 1rem;
    }

    .author a:link, .author a:visited, .author a:hover {
        color: #444;
    }

    .photo {
        max-width: 100%;
    }

    .author-details {
        line-height: 1.2;
    }

    .author-details .name {
        font-weight: bold;
    }

.content {
    padding: 1.3rem 1rem;
}

.summary {
    font-size: 1.375em; /* effective 22px */
}

.isbn {
    display: block;
}

.post-meta,
.tags {
    color: #767676;
    font-size: 0.875em; /* effective 14px */
    text-align: right;
}

.date a:link, .date a:visited, .date a:hover {
    color: #999;
    font-size: 0.875em; /* effective 14px */
}

.scroll-container {
    width: 100%;
    overflow-x: scroll;
}

.scroll-container .break {
    word-break: break-all;
}

@supports(display: grid) {
    body {
        display: grid;
        grid-template-rows: auto 1fr auto;
        grid-template-columns: 100%;
    }

    .masthead {
        display: grid;
        grid-template-columns: 4.688rem auto; /* effective 75px */
        grid-column-gap: .625rem; /* effective 10px */
    }

        .masthead img {
            max-width: 100%;
            margin-right: auto;
        }

    header {
        display: grid;
        grid-template-columns: 4.688rem auto; /* effective 75px */
        grid-column-gap: .625rem; /* effective 10px */
    }

        header > a:first-child {
            margin-right: 0;
        }

        header img {
            max-width: 100%;
            max-height: auto;
        }

    .author {
        display: grid;
        grid-template-columns: 5rem auto;
        grid-column-gap: 1rem;
    }

        .author > a {
            margin-right: auto;
        }

}

.toggle-label {
    font-size: 0.875em; /* effective 14px */
    background: #eee;
    padding: 0.5em;
    border-radius: 0.5rem;
}

input[name="switch-uid"],
.doi-fieldset
{
    display: none;
}

#show-doi:checked ~ .doi-fieldset,
#show-isbn:checked ~ .isbn-fieldset
{
    display: block;
}

#show-doi:checked ~ .isbn-fieldset,
#show-isbn:checked ~ .doi-fieldset
{
    display: none;
}

.btn-primary,
#show-doi:checked ~ label[for="show-doi"],
#show-isbn:checked ~ label[for="show-isbn"]
{
    background: #2C8166;
    color: #fff;
    border: 0;
}