:root {
    --bg-color: #ffffff;
    --header-bg: #ffffff;
    --card-bg: #9e9b9bd5;
    --button-bg: #7a7a7a;
    --text-color: #222222;
    --accent: #e60005;
}

html {
    scroll-behavior: smooth;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    --sb-width: 5rem;

    font-family: system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    background-color: var(--bg-color);
    color: var(--text-color);
}

a {
    text-decoration: none;
    color: var(--text-color);
}

body.sb-expanded {
    --sb-width: 12.5rem;
}

header {
    background-image: linear-gradient( #ffffff, #999999 );
    text-align: center;
    padding: 1px 5px;
    width: 100%;
    border-bottom: 3px solid var(--accent);
    position: fixed;
    z-index: 100;
    top: 0;
    animation: none;
    height: 128;
}

footer {
    background-image: linear-gradient( #999999, #ffffff );
    text-align: center;
    padding: 1px 5px;
    width: 360px;
    right: 0;
    border-top: 3px solid #20c9c1;
    border-left: 3px solid #20c9c1;
    border-top-left-radius : 20px;
    position: fixed;
    z-index: 49;
    bottom: 0;
    animation: none;
    height: 128;
}

footer #mvLogo {
    float: right; 
    width: 100px;
    margin-right: 16px;
    margin-top: 2px;
}

aside {
    position: fixed;
    z-index: 50;
    top: 128px;
    margin-top: 8px;
    left: 0;
    bottom: 0;
    padding: 1rem;
    width: var(--sb-width);
    background-image: linear-gradient( to right, #ffffff, #696969 );
    border-right: 3px solid var(--accent);
    transition: width 0.5s ease-in-out;
}

nav {
    height: 100%;
}

nav ul {
    height: 100%;
    list-style: none;
    display: flex;
    flex-flow: column;
    gap: 0.25rem;
}

nav li:last-child {
    margin-top: auto;
}

nav a {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.625rem 0.875rem;
    font-size: 1.25rem;
    line-height: 1;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 0.375rem;
    transition: 
        background-color 0.5s ease-in-out,
        color 0.5s ease-in-out;
}


nav a:hover {
    font-weight: bold;
}

nav a.active {
    outline: none;
    color: #e60005;
    background-color: #ffffff;
    font-weight: bold;
}

nav a span {
    font-size: 1.25rem;
    opacity: 0;
    visibility: hidden;
    transition: 
        opacity 0.3s ease-in-out,
        visibility 0.3s ease-in-out;
    white-space: nowrap;
}

.sb-expanded nav a span {
    opacity: 1;
    visibility: visible;
}

.sb-expanded aside .bx-chevrons-right {
    rotate: 180deg;
}

main {
    margin-left: 5rem;
    transition: margin-left 0.5s ease-in-out;
    margin-top: 128px;
    font-size: 1,25rem;
}

section {
  scroll-margin-top: 139px; /* Höhe deines Headers */
  padding: 1rem 2rem;
}

section h1 {
    text-align: center;
    margin: 16px;
}

h1, h2 {
    color: var(--text-color);
    text-shadow: 16px 16px 32px 0px #00000093;
}

header div h1 {
    margin: 0.8rem;
}

.multi
{
    display: flex;
    justify-content: space-between;
    gap: 32px;
    padding: 4px;
    height: 120px;
}

.multi *
{
    flex-grow: 1;
    flex-basis: 0;
}

.multi a
{
    display: block;
}

.link-icon {
  width: 1em;      /* Größe an Schriftgröße anpassen */
  height: 1em;
}

#links { 
    float: left; 
    width: 256px; 
    padding-left: 32px; 
}

#rechts { 
    float: right; 
    width: 256px; 
    margin-right: 32px;
}

#blutspende {
    background-image: linear-gradient( var(--accent), 20%, var(--bg-color) );
}

#vorstand {
    background-image: linear-gradient( #9c9c9c, 20%, var(--bg-color) );
}

#vorstand p {
    text-align: center;
}

#heim,
#jrk {
    background-color: #222222;
    color: #ffffff;
}

#aktiv {
    background-color: #313131;
    color: #ffffff;
}

#heim h1,
#jrk h1,
#aktiv h1 {
    color:#ffffff;
}

#ext-links {
    background-image: linear-gradient( #ffffff, 20%, rgb(136, 136, 136) );
    color: var(--accent);
}

#downloads {
    background-image: linear-gradient( #575757, 20%, rgb(39, 39, 39) );
}

#downloads h1 {
    color:#ffffff;
}

#ext-links a,
#downloads a,
#vorstand a,
#blutspende a,
#aktuelles a,
#archiv a,
#heim a {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.625rem 0.875rem;
    font-size: 1.25rem;
    line-height: 1;
    color: var(--text-color);
    text-decoration: none;
    border-radius: 0.375rem;
    transition: 
        background-color 0.5s ease-in-out,
        color 0.5s ease-in-out;

    outline: none;
    background-color: #ffffff;
    margin: 1rem;
}

#vorstand a,
#blutspende a,
#aktuelles a,
#archiv a,
#heim a {
    margin: 0;
    margin-bottom: 0.1rem;
}

#aktuelles .mosaic-block a,
#blutspende .mosaic-block a,
#archiv .mosaic-block a {
    visibility: hidden;
}

#aktuelles .mosaic-block:hover a,
#blutspende .mosaic-block:hover a,
#archiv .mosaic-block:hover a {
    visibility: visible;
}

#ext-links a:hover,
#downloads a:hover {
    font-weight: bold;
    color: var(--accent);
}

#datenschutz {
    background-image: linear-gradient( #575757, 20%, var(--bg-color) );
}

/* Mosaic */
.mosaic {
    display: grid;
    gap: 1rem;
}

.mosaic-block {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    min-height: 360px;
}

.mosaic-block img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.mosaic-block:hover img {
    scale: 1.05;
    transition: 0.3s;
}

.mosaic-block h3 {
    position: relative;
    padding: 1.5rem;
    font-size: 1.3125rem;
    font-weight: 500;
    color: #ffffff;
    background: linear-gradient( #222222, 50%, transparent );
    user-select: none;
}

.mosaic-block h4 {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem;
    font-size: 1.3125rem;
    font-weight: 500;
    color: #ffffff;
    background: linear-gradient( transparent, 50%, #222222 );
    user-select: none;
}

.expired::after {
  content: "";
  position: absolute;
  inset: 0;                    /* top, right, bottom, left = 0 */
  background-color: rgba(128, 128, 128, 0.8); /* grauer Schleier */
  transition: opacity 0.3s ease;
  pointer-events: none;        /* Klicks gehen durch */
}

.mosaic-layout-1 {
    grid-template-columns: 1fr;
}

.mosaic-layout-2,
.mosaic-layout-2-outer {
    grid-template-columns: repeat(2, 1fr);
}

.mosaic-layout-2-2-to-1 {
    grid-template-columns: repeat(3, 1fr);
}

.mosaic-layout-2-2-to-1 .mosaic-block:nth-child(1) {
    grid-column: span 2;
}

.mosaic-layout-2-2-to-1 .mosaic-block .mosaik-vorstand .mosaic-block:nth-child(1) {
    grid-column: span 1;
}

.mosaic-layout-2-zoom {
    grid-template-columns: repeat(4, 1fr);
}

.mosaic-layout-2-zoom:hover {
    grid-template-columns: repeat(5, 1fr);
}

.mosaic-layout-2-zoom .mosaic-block
{
    grid-column: span 2;
}

.mosaic-layout-2-zoom .mosaic-block:hover
{
    grid-column: span 3;
}

.mosaic-layout-3 {
    grid-template-columns: repeat(3, 1fr);
}

.mosaic-layout-4 {
    grid-template-columns: repeat(4, 1fr);
}

.mosaic-layout-4-zoom {
    grid-template-columns: repeat(4, 1fr);
}

.mosaic-layout-4-zoom:hover {
    grid-template-columns: repeat(5, 1fr);
}

.mosaic-layout-4-zoom .mosaic-block:hover
{
    grid-column: span 2;
}

.mosaic-layout-5 {
    grid-template-columns: repeat(5, 1fr);
}

.mosaic-layout-6 {
    grid-template-columns: repeat(3, 1fr);
}

.mosaik-vorstand .mosaic-block {
    min-height: 360px;    
}

.mosaik-vorstand .mosaic-block h4{
    visibility: hidden;
}

.mosaik-vorstand .mosaic-block:hover h4{
    visibility: visible;
}

/* Responsive design */

.mosaic-layout-heim {
    grid-template-columns: repeat(4, 1fr);
}

.mosaic-layout-heim .mosaic-block:nth-child(1) {
    grid-column: span 3;
}

.mosaic-layout-1 .mosaic-block {
    min-height: 620px;
}

.mobile-only 
{
    display: none; /* Nur auf Handy sichtbar */
}

.desktop-only 
{
    display: block; /* Nur auf Desktop sichtbar */
}

.medium-only
{
    display: none;
}

.mobile-not
{
    display: block;
}

@media (max-width: 1080px) 
{
    .medium-only
    {
        display: block;
    }

    .desktop-only 
    {
        display: none; /* Auf kleinen Bildschirmen verstecken */
    }

    #links 
    { 
        float: left; 
        width: 128px; 
        padding-left: 32px; 
    }

    #rechts 
    { 
        float: right; 
        width: 128px; 
        margin-right: 32px;
    }

    .mosaic-layout-1 .mosaic-block {
        min-height: 360px;
    }

    .mosaic-layout-2-outer,
    .mosaic-layout-2-2-to-1 {
        grid-template-columns: repeat(1, 1fr);
    }

    .mosaic-layout-2-2-to-1 .mosaic-block:nth-child(1) {
        grid-column: span 1;
    }

    .mosaic-layout-4,
    .mosaic-layout-4-zoom,
    .mosaic-layout-6 {
        grid-template-columns: repeat(2, 1fr);
    }

    .mosaic-layout-5 {
        grid-template-columns: repeat(6, 1fr);
    }

    .mosaic-layout-5 .mosaic-block {
        grid-column: span 3;
    }

    .mosaic-layout-5 .mosaic-block:nth-child(3),
    .mosaic-layout-5 .mosaic-block:nth-child(4),
    .mosaic-layout-5 .mosaic-block:nth-child(5)
    {
        grid-column: span 2;
    }

    .mosaic-layout-4-zoom {
    grid-template-columns: repeat(4, 1fr);
    }

    .mosaic-layout-4-zoom:hover {
        grid-template-columns: repeat(5, 1fr);
    }

    .mosaic-layout-4-zoom .mosaic-block
    {
        grid-column: span 2;
    }

    .mosaic-layout-4-zoom .mosaic-block:hover
    {
        grid-column: span 3;
    }

    .mosaic-layout-heim {
        grid-template-columns: repeat(3, 1fr);
    }

    .mosaic-layout-heim .mosaic-block:nth-child(1) {
        grid-column: span 2;
    }
}

@media (min-width: 800px)
{
    main {
        margin-left: var(--sb-width);
    }
}

@media (max-width: 799px) 
{
    main 
    {
        top: 100px;
    }

    .autofitImg 
    {
        width: 32%;
    }
    
    .mobile-only 
    {
        display: block; /* Jetzt sichtbar */
    }

    .desktop-only 
    {
        display: none; /* Auf kleinen Bildschirmen verstecken */
    }

    .medium-only
    {
        display: none;
    }

    .mobile-not
    {
        display: none;
    }

    .mosaic-layout-vorstand {
        grid-template-columns: repeat(1, 1fr);
    }

    .mosaic-layout-vorstand .mosaic-block
    {
        grid-column: span 1;
        grid-row: span 1;
    }

    .mosaic-layout-2,
    .mosaic-layout-2-zoom,
    .mosaic-layout-2-zoom:hover,
    .mosaic-layout-3,
    .mosaic-layout-4,
    .mosaic-layout-4-zoom,
    .mosaic-layout-4-zoom:hover,
    .mosaic-layout-5,
    .mosaic-layout-6 {
        grid-template-columns: repeat(1, 1fr);
    }

    .mosaic-layout-5 .mosaic-block {
        grid-column: span 1;
    }

    .mosaic-layout-2-zoom .mosaic-block,
    .mosaic-layout-2-zoom .mosaic-block:hover,
    .mosaic-layout-4-zoom .mosaic-block,
    .mosaic-layout-4-zoom .mosaic-block:hover
    {
        grid-column: span 1;
    }

    .mosaic-layout-heim {
        grid-template-columns: repeat(1, 1fr);
    }

    .mosaic-layout-heim .mosaic-block:nth-child(1) {
        grid-column: span 1;
    }
}

@media (max-width: 516px) 
{
    header {
        padding: 1px 5px;
        width: 100%;
        border-bottom: 3px solid var(--accent);
        position: fixed;
        z-index: 100;
        top: 0;
        animation: none;
        height: 128;
    }

    header div h1 {
        margin: 0;
    }

    .mosaic-block {
       min-height: 260px;

    }
}