:root {
    --bg: #fafafa;
    --bg-strong: #ffffff;
    --text: #222222;
    --subtext: #333333;
    --link: #0000ff;
    --nav-bg: #eeeeee;
    --button-bg: #fffefe;
    --button-border: #888888;
    --heading-bg: #eeeeee;
    --heading-border: #cccccc;
    --toc-heading: #444444;
    --toc-border: #cccccc;
    --toc-bg: #fafafa;
    --card-border: rgba(0,0,0,.1);
}
html[data-theme="dark"] {
    --bg: #101020;
    --bg-strong: #000000;
    --text: #eeeeee;
    --subtext: #dddddd;
    --link: #ddeeff;
    --nav-bg: #000011;
    --button-bg: #1a1a1a;
    --button-border: #999999;
    --heading-bg: #10102a;
    --heading-border: #334455;
    --toc-heading: #bbbbcc;
    --toc-border: #444444;
    --toc-bg: #080820;
    --card-border: rgba(255,255,255,.15);
}
html[data-theme="light"] {
    color-scheme: light;
}
html[data-theme="dark"] {
    color-scheme: dark;
}
html, body {
    height: 100%;
    max-width: 100vw;
    margin: 0;
}
body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--bg);
    color: var(--text);
}
main, p, div, h1, img, #table-of-contents {
    max-width: 100vw;
}
a {
    color: var(--link);
}
li {
  line-height: 1.5;
}

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

/* header, footer */

nav {
    background: var(--nav-bg);
    display: flex;
    flex-direction: row;
    justify-content: center;
    padding: 0.5rem;
}
header nav {
    align-items: flex-start;
}
footer nav {
    flex-wrap: wrap;
}

/* favicon als logo */

.fava {
    border: 1px solid #555;
    border-radius: 5px;
    width: 30px;
    height: 30px;
    margin-right: 1rem;
}

/* links in header nav */
.nava {
    background-color: var(--button-bg);
    border: 1px solid var(--button-border);
    padding: 0.25rem 0.5rem;
    margin: 0 0.25rem;
    border-radius: 5px;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--text);
}
/* Umschalter für Light-/Dark-Mode im header */
#theme-toggle {
    background-color: var(--button-bg);
    border: 1px solid var(--button-border);
    padding: 0.39rem 0.6rem;
    margin-left: 1rem;
    border-radius: 5px;
    color: var(--text);
}
.theme-button {
    cursor: pointer;
    font: inherit;
}

/* footer */

.site-footer {
    text-align: center;
}
.site-footer a {
    margin: 0 0.25rem;
    color: var(--sub-text);
}

/* heading */

h1 {
    text-align: center;
    background: var(--heading-bg);
    padding: 1rem 2rem;
    border: 1px solid var(--heading-border);
    border-radius: 10px;
}
.title {
    margin-bottom: .2em;
}
.subtitle {
    font-size: medium;
    margin-top: 0;
    color: var(--subtext);
}
.cite {
    background: var(--bg-strong);
    font-style: oblique 15deg;
    padding: 0.5rem 2rem;
}

/* homepage */

.figure {
    text-align: center;
}
.avatar {
    border-radius: 500px;
    margin: 2rem 0;
}

/* startseiten-links als buttons */

.mainlink {
    display: flex;
    justify-content: center;
    margin: 2rem 0;
}

.mainlink a {
    background-color: var(--button-bg);
    border: 2px solid var(--button-border);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    text-transform: uppercase;
    text-decoration: none;
}

.secondlink {
    display: flex;
    justify-content: center;
    margin: 0.25rem 0;
}

.secondlink a {
    background-color: var(--nav-bg);
    border: 1px solid var(--button-border);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    text-decoration: none;
}

/* vertical center of content */

#content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 900px;
    padding: 0 1rem 1rem;
    margin: auto;
    border-left: 1px solid var(--nav-bg);
    border-right: 1px solid var(--nav-bg);
}

/* projekte */

.projekt-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid var(--heading-border);
    border-radius: 10px;
    background: var(--heading-bg);
    padding: 1.5rem;
    margin: 0.5rem 0 2.5rem;
    overflow: auto;
}
.projekt-card h2 {
    margin-top: 0;
    text-align: center;
}
.projekt-card img {
    display: block;
    width: 300px;
    margin: 0.5rem auto;
    border: 1px solid var(--heading-border);
    border-radius: 10px;
}
.projekt-card hr {
    width: 75%;
    color: var(--heading-border);
}

/* blog posts */

/* blog post cover */

.post-cover {
    text-align: center;
    max-width: 100vw;
    margin-left: 0;
    margin-right: 0;
}
.post-cover img {
    width: 100vw;
    max-width: 900px;
    margin-left: 0;
    margin-right: 0;
}

/* blog post toc */

#table-of-contents {
    border: 1px solid var(--toc-border);
    background: var(--toc-bg);
    border-radius: 10px;
    padding: 1rem 2rem;
    margin-bottom: 2rem;
}
#table-of-contents h2 {
    color: var(--toc-heading);
}
#table-of-contents a {
    text-decoration: none;
}

/* post index seite */

.post-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--card-border);
}
.post-card__body {
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.post-card__cover img {
    width: 180px;
    height: auto;
    display: block;
    margin: 0.5rem auto 0 auto;
    border-radius: 12px;
}
.post-card__title {
    margin: 0 auto .25rem auto;
    text-align: center;
}
.post-card__meta {
    font-size: .9rem;
    opacity: .75;
    margin: 0 auto .5rem auto;
}
.post-card__excerpt {
    margin: 0 auto;
    text-align: center;
    line-height: 1.4;
}
.post-card a {
    text-decoration: none;
}
.example, .org-src-container {
    border: 2px solid var(--nav-bg);
    background: var(--bg-strong);
    padding: 1rem;
}

/* Autorenbox */

.post-meta-box {
    display: flex;
    width: 400px;
    max-width: 80vw;
    gap: 1rem;
    align-items: center;
    border: 1px solid var(--heading-border);
    padding: 1rem;
    margin: 1rem auto;
    background: var(--heading-bg);
    border-radius: 10px;
}
.post-meta-box__image {
    width: 96px;
    height: 96px;
    object-fit: cover;
    border-radius: 999px;
    border: 1px solid  var(--heading-border);
    flex-shrink: 0;
}
.post-meta-box__content {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.post-meta-box__name {
    font-weight: bold;
    font-size: 1.1rem;
}
.post-meta-box__date {
    font-size: 0.95rem;
    opacity: 0.8;
}
.post-meta-box__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.25rem;
}
.post-meta-box__tag {
    display: inline-block;
    padding: 0.2rem 0.55rem;
    border: 1px solid var(--heading-border);
    border-radius: 50px;
    font-size: 0.9rem;
    background: var(--bg);
}
.post-meta-box a {
    text-decoration: none;
}

/* Anzahl Wörter und Lesedauer */

.post-reading-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 1rem 0 1.5rem;
    font-size: 0.95rem;
    opacity: 0.8;
    font-style: oblique 15deg;
}

.post-reading-meta__item {
    white-space: nowrap;
}

.post-reading-meta__sep {
    opacity: 0.6;
}

/* tag-Listen Index-Seiten */

.tag-index-list,
.tag-post-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
}

.tag-index-item,
.tag-post-item {
    margin: 0.75rem 0;
}

.tag-index-link {
    display: inline-block;
    background-color: var(--button-bg);
    border: 2px solid var(--button-border);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
}

.tag-post-link {
    display: inline-block;
    background-color: var(--nav-bg);
    border: 1px solid var(--button-border);
    padding: 0.45rem 0.9rem;
    border-radius: 8px;
    text-decoration: none;
}

.tag-index-count,
.tag-post-date {
    margin-left: 0.5rem;
    opacity: 0.75;
}

.tag-backlink {
    margin: 1rem 0 2rem;
}

.tag-backlink__link {
    text-decoration: none;
}