/******ALT******/

/*StudiFinder: background-green: #F2F2F2*/
/*StudiFinder: green #73D6C2*/
/*StudiFinder: orange #ff800*0/

/*853 Pixel maximale Breite!!!*/

/* FOUC-Schutz (Moodle): Elemente, die JS später umbaut, bleiben unsichtbar,
   bis dynamic_exercises.js / logik.js html.frame_ui_ready setzt.
   Verhindert den kurzen Flash „altes Design → neues Design“ beim Reload. */
html:not(.frame_ui_ready) #mycontent div.rahmenicon,
html:not(.frame_ui_ready) div[class*="xcontent"] div.rahmenicon,
html:not(.frame_ui_ready) #content div.rahmenicon,
html:not(.frame_ui_ready) #mycontent a.pdf_download,
html:not(.frame_ui_ready) div[class*="xcontent"] a.pdf_download,
html:not(.frame_ui_ready) #mycontent .qrcode,
html:not(.frame_ui_ready) div[class*="xcontent"] .qrcode {
    opacity: 0 !important;
    pointer-events: none !important;
}

/* Legacy-Video-PNG (buttonm_visual) in Moodle-Labels ohne JS-Layout ausblenden. */
div[class*="xcontent"] img[src*="buttonm_visual"],
img[src*="buttonm_visual.png"] {
    display: none !important;
    visibility: hidden !important;
    width: 0 !important;
    height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
}

div[class*="xcontent"] .rahmenicon:not(.video_header_frame_icon):not(.aufgabe_header_frame_icon):not(.info_header_frame_icon),
div[class*="xcontent"] .rahmenicon:empty {
    display: none !important;
}

.videorahmen_header .rahmenicon,
.aufgabe_header .rahmenicon,
.info_header .rahmenicon {
    display: flex !important;
}

/* CC-Footer wie in VEMINT-LV-Kursen (inline, ohne Box). */
.copyright,
#content_container > .copyright {
    display: block;
    width: 100%;
    max-width: 900px;
    margin: 32px auto 20px;
    padding: 16px 0 0;
    border: 0;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 0;
    background: transparent;
    font-size: 70%;
    line-height: 1.4;
    box-sizing: border-box;
    clear: both;
}

/* In Moodle-Labels: Schritt-Navigation standardmäßig ausblenden */
.activity-item #buttons,
.activity-item #seitenanzeige {
    display: none !important;
}

/* Intro: Weiter/Zurück für Unterseiten anzeigen */
.activity-item .has-step-navigation #buttons {
    display: flex !important;
}

.activity-item .has-step-navigation #seitenanzeige {
    display: flex !important;
}

/* Moodle Abschnitts-Navigation an Studifinder-Buttons angeglichen */
.activity-navigation,
.activity-navigationcontainer,
[data-region="activity-navigation"] {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    max-width: 900px;
    margin: 36px auto 8px;
    padding: 16px 0 0;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    box-sizing: border-box;
}

.activity-navigation .row,
.activity-navigationcontainer .row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
    margin: 0 !important;
}

.activity-navigation [class*="col-"],
.activity-navigationcontainer [class*="col-"] {
    flex: 1 1 auto;
    width: auto !important;
    max-width: none !important;
    padding: 0 !important;
    float: none !important;
}

.activity-navigation [class*="col-"]:first-child,
.activity-navigationcontainer [class*="col-"]:first-child {
    text-align: left;
}

.activity-navigation [class*="col-"]:nth-child(2),
.activity-navigationcontainer [class*="col-"]:nth-child(2) {
    text-align: center;
}

.activity-navigation [class*="col-"]:last-child,
.activity-navigationcontainer [class*="col-"]:last-child {
    text-align: right;
}

#prev-activity-link,
#next-activity-link,
.activity-navigation a[id*="activity-link"],
.activity-navigationcontainer a[id*="activity-link"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 40px;
    padding: 8px 14px;
    border: 1.5px solid #32B9AA;
    border-radius: 999px;
    background: #ffffff;
    color: #1F948D !important;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.2;
    text-decoration: none !important;
    box-shadow: 0 1px 2px rgba(31, 148, 141, 0.08);
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

#next-activity-link {
    background: #32B9AA;
    border-color: #32B9AA;
    color: #ffffff !important;
    box-shadow: 0 2px 6px rgba(50, 185, 170, 0.28);
}

#prev-activity-link:hover,
#next-activity-link:hover,
.activity-navigation a[id*="activity-link"]:hover,
.activity-navigationcontainer a[id*="activity-link"]:hover {
    background: #1F948D;
    border-color: #1F948D;
    color: #ffffff !important;
    text-decoration: none !important;
}

#jump-to-activity,
select[name="jump"],
.activity-navigation select,
.activity-navigationcontainer select {
    appearance: none;
    -webkit-appearance: none;
    min-width: min(100%, 220px);
    max-width: 100%;
    min-height: 40px;
    padding: 8px 36px 8px 14px;
    border: 1.5px solid rgba(50, 185, 170, 0.45);
    border-radius: 999px;
    background-color: #ffffff;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%231F948D' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    color: #243B3A;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.2;
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(31, 148, 141, 0.06);
}

#jump-to-activity:hover,
select[name="jump"]:hover,
.activity-navigation select:hover {
    border-color: #1F948D;
}

#jump-to-activity:focus-visible,
select[name="jump"]:focus-visible {
    outline: 2px solid #1F948D;
    outline-offset: 2px;
}

@media (max-width: 600px) {
    .activity-navigation .row,
    .activity-navigationcontainer .row {
        flex-direction: column;
    }

    .activity-navigation [class*="col-"],
    .activity-navigationcontainer [class*="col-"] {
        width: 100% !important;
        text-align: center !important;
    }

    #prev-activity-link,
    #next-activity-link {
        width: 100%;
        justify-content: center;
    }

    #jump-to-activity,
    select[name="jump"] {
        width: 100%;
        max-width: 100%;
    }
}


/******NEU******/
/*
 * Hintergrund für Boxen: #F2F2F2
 * Helle Farbe:  #73D6C2
 * Dunkle Farbe: #32B9AA // rgb(50,185,170)
 */


/*Verhindert Umrandung von Grafiken in Links im IE*/
img {
  border: 0
}

div#subsections {
	display: none;
}










/* Rahmen */

div.info, div.verweis, div.interaktion, div.aufgabe, div.flashrahmen, div.adoberahmen, div.videorahmen {
	margin-top: 10px;
	margin-bottom: 18px;
    max-width: 100%;
    position: relative;
}

div.video {
    position: relative;
}

div.rahmen {
    position: relative;
}
.abgesetzt {
	display: block;
}
.abgesetzt div {
	margin-bottom: 15px;
}
.aufgaberahmen
{
	/*border-color:#a3004e;*/
    border-color:#73D6C2;
	border-style:solid;
        border-width:2px;
	padding: 16px 18px 20px;
	text-align:left;
	margin-right: 0;
	position: relative;
	box-sizing: border-box;
} 
.inforahmen
{
	/*border-color:#a3004e;*/
    border-color:#73D6C2;
	border-style:solid;
        border-width:2px;
	padding: 16px 18px 20px;
	margin-right: 0;
	text-align:left;
	position: relative;
	box-sizing: border-box;
}
.verweisrahmen
{
	/*border-color:#a3004e;*/
    border-color:#73D6C2;
	border-style:solid;
        border-width:2px;
	padding: 16px 18px 20px;
	margin-right: 0;
	text-align:left;
	position: relative;
	box-sizing: border-box;
}
.interaktionrahmen
{
	/*border-color: #a3004e;*/
        border-color:#73D6C2;
	border-style:solid;
        border-width:2px;
	padding: 16px 18px 20px;
	margin-right: 0;
	text-align:left;
	position: relative;
	box-sizing: border-box;
}

#mycontent  ul, #mycontent  ol {
    padding: 20px;
}

/* Basis-Position nur als Fallback; vor frame_ui_ready ohnehin unsichtbar.
   Nach JS-Umbau greifen die .info_header_frame_icon / .video_header_frame_icon / .aufgabe_header_frame_icon Regeln. */
div.rahmenicon {
	display: flex;
	align-items: center;
	justify-content: center;
	position: absolute;
	top: 8px;
	right: 8px;
	float: none;
	margin-left: 0;
	text-align: center;
	width: 50px;
	height: 50px;
	clear: none;
	z-index: 1;
}
div.rahmenicon img {
	border: none;
	width: 50px;
	height: 50px;
	max-width: 50px;
}

.rahmeniconaufgabe {
    width: 50px;
    height: 50px;
  }
  
.rahmen
{
	/*border-color:#a3004e;*/
    border-color:#73D6C2;
	border-style:solid;
        border-width:3px;
	padding:5px 82px 5px 5px;
	margin-right: 0;
	text-align:left;
	position: relative;
}

.flashrahmen {
        border-color:#73D6C2;
        border-width: 2px;
        border-style: solid;
        /*border-color: #666666;*/
        padding:10px;
        padding:5px;   
}
.adoberahmen, .videorahmen, .interaktionrahmen {
	border-color:#73D6C2;
	border-width: 2px;
	border-style: solid;
	/*border-color: #666666;*/
	padding:10px;
	padding:5px 82px 5px 5px;
	margin-right: 0;
	position: relative;
}
.interaktionrahmenExtraBreit {
        /*border-color: #a3004e;*/
        text-align:left;
        border-color:#73D6C2;
        border-width: 0.1px;
        border-style: solid;
        /*border-color: #666666;*/
        padding:10px;
        padding:5px;
}

.video {
  text-align: center;
}



/* Der rohe QR-Code-Container wird immer versteckt (kein Aufblitzen des alten Designs
   vor dem Umbau durch JS): sichtbar wird nur noch das gestylte Icon im Header/Footer. */
.qrcode {
	position: absolute;
	width: 1px;
	height: 1px;
	margin: -1px;
	padding: 0;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

.qrcode_link {
	display: none !important;
}

.versteckt {
	display: none;
}




/* Textfluss */


div#content.long {
    width:900px;
}

div#content.start {
	margin-top: 7em;
}
div.text {
	margin-right: 80px;
}
div#text {
    display: block;
}
div.p {
	margin-top: 1em;
}

/* Bilder */
div.imagecenter {
	text-align: center;
	padding-top: 15px;
	padding-bottom: 15px;
	margin: 0px;
}
div.imagecenter div.bildtext {
	margin-left: 15%;
	margin-right: 15%;
}
div.floatright {
	float: right;
/*	width: 200px;*/
	text-align: center;
	margin-left: 10px;
	margin-right: 0px;
	margin-top: 5px;
}
div.Floatright {
	float: right;
	width: 300px;
	text-align: center;
	margin-left: 10px;
	margin-right: 0px;
	margin-top: 5px;
}
div.clearfloat {
	clear: both;
}

/* CSS-Eigenschaften für die Page-Status-Funktionalität */
div#page_status{
	position:fixed;
	float:right;
	left:867px;
	top:140px;
	width:70px;
	height:30px;
	text-align:right;
	z-index:5;
	vertical-align:middle;
}

div#page_status .incomplete{
	display:none;
}
div#page_status .completed{
	display:none;
}
div#page_status .notattempted{
	display:inline;
}
div#page_status .select{
	display:inline;
}
div#page_status .notselected{
	display:none;
	border:1px solid grey;
}


/* CSS-Eigenschaften für die LO-status-Funkitonalität*/
span#lo_status{
	width:70px;
	height:30px;
	text-align:left;
	z-index:2;
	vertical-align:middle;
}

span#lo_status .incomplete{
	display:none;
}
span#lo_status .completed{
	display:none;
}
span#lo_status .notattempted{
	display:inline;
}
span#lo_status .select{
	display:inline;
}
span#lo_status .notselected{
	display:none;
	border:1px solid grey;
}



/* Interaktion */
a.linkinteraktionrahmen:hover img {
	background-image:url('../images/buttonm_visual_.png');
}

/* Formulare */
form {
	margin-bottom:0px;
}



/* Tabellen Rahmen */
table.rahmen {
	border: 1px solid black;
	border-spacing: 0px;
}
td.rahmen {
	border: 1px solid black;
	padding: 5px;
}


/* Html Formeln */
.formel {
	margin-top:5px;
	margin-bottom:5px;
}

.formeloverline {
	text-decoration: overline;
}









a

#overlay{
	display:none;
   position: fixed;
   z-index:199;
   top: 0px;
   left: 0px;
   height:100%;
   width:100%;   
   background-color:#000;
   -ms-filter: "Alpha(Opacity=75)"; /* IE 8 */
   filter:alpha(opacity=75); /* IE5-7 */
   -moz-opacity: 0.75; /* Mozilla */
   opacity: 0.75;
	
}

#loesung{  
	display:none;
	position:absolute;
   top:5%;
   left:5%;
   padding:5%;
   z-index:200;
   width:80%;
   background-color:#fff;
}

#interaction{
	display:none;
	position:fixed;
   top:5%;
   left:5%;
   padding-left:5%;
   padding-top:5%;
   z-index:200;
   width:80%;
   height:80%;
   background-color:#fff;
}



.loesung {
    width: 100%;
    display: none;
    background-color: #F2F2F2;
    padding-left: 1em;
    padding-top: 1em;
    padding-bottom: 1em;
}

.zufallsbutton, .zufallsbutton_renew, .zufallsbutton_return {
    cursor: pointer;
    display: none !important; /* Zufallsaufgabe deaktiviert */
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 26px;
    margin-left: 14px;
    margin-bottom: 20px;
    padding: 3px 10px 3px 8px;
    border: 1px solid #8ED7B8;
    background-color: #EAF8F1;
    color: #16845E;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.1;
    white-space: nowrap;
    vertical-align: middle;
}

/* Erste Zufalls-Schaltfläche in der Aufgabenzeile: sichtbar von den QR-/Link-Icons abgrenzen */
.qrcode + .zufallsbutton,
.qrcode ~ .zufallsbutton {
    margin-left: 18px;
    border-left: 2px solid #D7F3EA;
    padding-left: 12px;
}

.zufallsbutton:hover, .zufallsbutton_renew:hover, .zufallsbutton_return:hover {
    background-color: #D7F3EA;
    border-color: #32B9AA;
}

.zufallsbutton::before, .zufallsbutton_renew::before {
    content: "\21BB";
    font-size: 14px;
}

.zufallsbutton_return::before {
    content: "\21A9";
    font-size: 14px;
}

.playButton {
        margin-top:5px;
        background-image: url(@@PLUGINFILE@@/playButton.jpg);
        background-repeat: no-repeat;
        height: 14px;
        width: 14px;
}

.pauseButton {
        margin-top:5px;
        background-image: url(@@PLUGINFILE@@/pauseButton.jpg);
        background-repeat: no-repeat;
        height: 14px;
        width: 14px;
}

input.right_answer, div.right_answer, select.right_answer {
    background-color: #73D6C2;
}

input.wrong, div.wrong, select.wrong {
    background-color: #f95b7b;
}

/*Korrigiere Moodle-Abstände*/

li.activity > div {
    padding: 0px;
}

.mod-indent-outer {
    padding-left: 0px !important;
}

.contentwithoutlink {
    padding-right: 0px !important;
}

#mycontent {
    margin-top: 0;
    padding-top: 0.25em;
    overflow: visible;
}

#mycontent h2,
div[class*="xcontent"] > h2,
div[class*="xcontent"] > .page_share_header > h2 {
    margin-top: 0;
    padding-top: 0;
    line-height: 1.4;
    overflow: visible;
}

/* Moodle-Labels haben oft kein #mycontent – daher breiter selektieren.
   Zusätzlich eine sinnvolle Obergrenze, damit große PNG-Plots nicht
   die volle Moodle-Spaltenbreite sprengen. */
#mycontent img,
#content img,
#content_container img,
div[class*="xcontent"] img,
.aufgabe img,
.loesung img,
.videorahmen img,
.imagecenter img,
.floatright img {
    max-width: min(100%, 800px);
    height: auto;
}

/* Icons und kleine UI-Grafiken nicht künstlich begrenzen. */
.rahmenicon img,
.rahmeniconaufgabe,
.page_share_pdf_icon,
.button-icon img,
.button-icon svg,
#navigation img,
#buttons img,
#buttons svg {
    max-width: 100%;
}

#mycontent * .loesung * img,
.loesung img {
    padding-right: 1em;
}

#mycontent * .loesung * .interaktion {
    padding-right: 1em;
}

#mycontent video,
#content video,
#content_container video,
div[class*="xcontent"] video,
.videorahmen video,
.videorahmen iframe,
.videorahmen .h5p-iframe,
.videorahmen .h5p-container {
    max-width: 100%;
    height: auto;
}

/* Canvas nur unter #mycontent begrenzen – nicht in Moodle-xcontent,
   sonst zerbricht GeoGebra (absolute Schieberegler, falsche Höhe). */
#mycontent * canvas {
    max-width: 100%;
    height: auto;
}

/* GeoGebra-Canvas: keine Größen-CSS, GeoGebra setzt Inline-Styles selbst */
.ggb canvas,
.ggb_delayed canvas,
.ggb-fit canvas,
.geogebraweb canvas,
.GeoGebraFrame canvas,
article.geogebraweb canvas,
div[id^="ggb_"] canvas,
div[id$="_container"] canvas {
    max-width: none !important;
    max-height: none !important;
}

/* GeoGebra proportional in Spalte einpassen (scaleContainerClass) */
.ggb-fit,
.ggb_delayed.ggb-fit {
    width: 100%;
    max-width: min(100%, 700px);
    margin: 0.6em auto 1em;
    overflow: visible;
}

img.ggb_starter {
    display: block;
    max-width: min(100%, 700px);
    margin: 0.6em auto 1em;
    height: auto;
}

.nav-tabs {
    margin-bottom: 0px;
}

#content {
    margin: 0px;
}

.course-content ul.section {
    margin: 0em;
}
/*Ende Moodle-Korrektur*/

table {
    
    border-collapse: collapse;
}

table tr td {
    padding: 5px;
}

div.table_inline_border  table td {
    border-right: 1px solid;
}

div.table_inline_border table tr:first-child td {
    border-bottom: 1px solid;
}

div.table_inline_border table tr td:last-child {
    border-right: 0;
}

div.singlechoice_aufgabe {
  display: inline;
}
div.singlechoice_aufgabe > input {
    margin-right: 10px;
}
div.multiplechoice_aufgabe > input {
    margin-right: 10px;
}

.continue_link {
    border: 3px solid #73D6C2;
    height: auto;
    padding: 0.4em;
    display: inline-block;
    margin-top: 3px;
    margin-right: 3px;
    cursor: pointer;
}

.exercise_progress {
    margin: 16px 0 24px;
    padding: 16px 18px 14px;
    border: 1px solid rgba(115, 214, 194, 0.32);
    border-radius: 14px;
    background: linear-gradient(180deg, #FFFFFF 0%, #F7FCFB 100%);
    box-shadow: 0 4px 18px rgba(15, 31, 29, 0.06);
    transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.exercise_progress_pulse {
    animation: exercise-progress-pulse 420ms ease;
}

@keyframes exercise-progress-pulse {
    0% {
        transform: scale(1);
        }
    45% {
        transform: scale(1.008);
        }
    100% {
        transform: scale(1);
        }
}

.exercise_progress_header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.exercise_progress_title {
    font-size: 15px;
    font-weight: 600;
    color: #0F1F1D;
    letter-spacing: 0.01em;
}

.exercise_progress_stats {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.exercise_progress_count {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    background-color: #E8F8F5;
    color: #1F4B48;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.2;
}

.exercise_progress_percent {
    color: #32B9AA;
    font-size: 14px;
    font-weight: 700;
    line-height: 1.2;
}

.exercise_progress_bar {
    position: relative;
    width: 100%;
    height: 10px;
    border: 0;
    border-radius: 999px;
    background-color: #E3F2EF;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(15, 31, 29, 0.07);
}

.exercise_progress_fill {
    position: relative;
    width: 0;
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, #2EB8A8 0%, #55CFA8 55%, #6FD6A9 100%);
    transition: width 420ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.exercise_progress_fill::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
    transform: translateX(-100%);
    animation: exercise-progress-shine 2s ease-in-out infinite;
}

.exercise_progress_meta {
    margin-top: 8px;
    color: #243B3A;
    font-size: 0.9em;
}

.exercise_progress_actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
}

.exercise_progress_actions button {
    padding: 7px 14px;
    border: 1px solid #D4EFEB;
    border-radius: 8px;
    background-color: #FFFFFF;
    color: #243B3A;
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.2;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(36, 59, 58, 0.05);
    transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.exercise_progress_actions button:hover,
.exercise_progress_actions button:focus {
    border-color: #32B9AA;
    background-color: #F2FBFA;
    color: #172322;
    box-shadow: 0 2px 6px rgba(36, 59, 58, 0.08);
    transform: translateY(-1px);
    outline: none;
}

.exercise_progress_actions .exercise_progress_filter_active {
    border-color: #32B9AA;
    background-color: #32B9AA;
    color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(50, 185, 170, 0.28);
}

.exercise_progress_actions .exercise_progress_filter_active:hover,
.exercise_progress_actions .exercise_progress_filter_active:focus {
    background-color: #279F98;
    border-color: #279F98;
    color: #FFFFFF;
}

.exercise_progress_actions .exercise_progress_reset {
    margin-left: auto;
}

@media (max-width: 640px) {
    .exercise_progress {
        padding: 14px 14px 12px;
    }

    .exercise_progress_header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .exercise_progress_actions .exercise_progress_reset {
        margin-left: 0;
    }
}

@keyframes exercise-progress-shine {
    0% {
        transform: translateX(-100%);
    }
    55%, 100% {
        transform: translateX(100%);
    }
}

.exercise_progress_tracked {
    margin-right: 0;
    padding: 12px 82px 12px 14px;
    border: 1px solid #D3E9E6;
    border-left: 4px solid #73D6C2;
    background-color: #FFFFFF;
    box-sizing: border-box;
    transition: border-color 180ms ease, background-color 180ms ease;
}


.exercise_progress_tracked.exercise_progress_completed {
    border-left-color: #32B9AA;
    background-color: #FBFEFD;
}

.exercise_progress_status {
    display: none;
    margin-bottom: 10px;
    padding: 3px 8px;
    border: 1px solid #D3E9E6;
    background-color: #ffffff;
    color: #243B3A;
    font-size: 0.9em;
}

.exercise_progress_completed > .exercise_progress_status {
    display: none;
    border-color: #32B9AA;
    background-color: #E8F8F5;
}

.exercise_progress_nav_completed {
    font-weight: bold;
}

.exercise_progress_toggle {
    display: inline-flex;
    align-items: center;
    float: right;
    gap: 0.55em;
    margin-bottom: 10px;
    margin-left: 12px;
    padding: 5px 9px;
    border: 1px solid #B9E8E1;
    background-color: #ffffff;
    color: #243B3A;
    cursor: pointer;
    transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}


.exercise_progress_toggle input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.exercise_progress_checkmark {
    position: relative;
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid #32B9AA;
    background-color: #ffffff;
    box-sizing: border-box;
    transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.exercise_progress_checkmark::after {
    content: "";
    position: absolute;
    left: 4px;
    top: 1px;
    width: 5px;
    height: 10px;
    border: solid #ffffff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg) scale(0);
    transition: transform 160ms ease;
}

.exercise_progress_completed > .exercise_progress_toggle {
    border-color: #32B9AA;
    background-color: #E8F8F5;
}

.exercise_progress_completed > .exercise_progress_toggle .exercise_progress_checkmark {
    background-color: #32B9AA;
    transform: scale(1.04);
}

.exercise_progress_completed > .exercise_progress_toggle .exercise_progress_checkmark::after {
    transform: rotate(45deg) scale(1);
}

.exercise_progress_task_pulse > .exercise_progress_toggle {
    animation: exercise-task-pulse 420ms ease;
}

.exercise_progress_tracked::after {
    content: "";
    display: table;
    clear: both;
}

@keyframes exercise-task-pulse {
    0% {
        }
    45% {
        }
    100% {
        }
}

@media (prefers-reduced-motion: reduce) {
    .exercise_progress,
    .exercise_progress_tracked,
    .exercise_progress_fill,
    .exercise_progress_fill::after,
    .exercise_progress_actions button,
    .exercise_progress_toggle,
    .exercise_progress_checkmark,
    .exercise_progress_checkmark::after,
    .exercise_progress_pulse,
    .exercise_progress_task_pulse > .exercise_progress_toggle {
        animation: none;
        transition: none;
    }
}


/* Modern course task cards and action buttons */
div.aufgabe.exercise_progress_tracked,
div.aufgabe {
    border: 2px solid rgba(115, 214, 194, 0.85);
    background-color: #FFFFFF;
    box-shadow: none;
    color: #172322;
    line-height: 1.45;
    box-sizing: border-box;
}

div.aufgabe {
    padding: 18px 18px 22px 16px;
    margin-top: 14px;
    margin-bottom: 22px;
}

div.aufgabe.exercise_progress_tracked {
    padding: 18px 104px 54px 16px;
}

div.aufgabe.exercise_progress_tracked > b:first-child,
div.aufgabe > b:first-child {
    display: inline-block;
    margin-top: 2px;
    margin-bottom: 20px;
    font-size: 1.08em;
    color: #0F1F1D;
}

.aufgaberahmen {
    border-width: 2px;
    border-color: rgba(115, 214, 194, 0.85);
    background-color: #FFFFFF;
    box-shadow: none;
    padding: 16px 18px 20px;
}

div.aufgabe > .aufgaberahmen,
div.aufgabe .aufgaberahmen {
    margin: 0;
    padding: 4px 0 0 0;
    border: 0;
    background-color: transparent;
    box-shadow: none;
}

div.aufgabe.exercise_progress_tracked > .aufgaberahmen,
div.aufgabe.exercise_progress_tracked .aufgaberahmen {
    padding-right: 0;
}

.aufgaberahmen div.aufgabe,
.aufgaberahmen div.aufgabe.exercise_progress_tracked {
    margin: 0;
    padding: 0;
    border: 0;
    background-color: transparent;
    box-shadow: none;
}

.aufgaberahmen div.aufgabe > b:first-child {
    margin-bottom: 20px;
}

/* Framed exercises (other sections): same card look as Aufgaben section */
div.aufgabe.aufgabe_framed_layout,
div.aufgabe.aufgabe_framed_layout.aufgabe_layout_ready {
    padding: 16px 18px 20px;
    margin-top: 14px;
    margin-bottom: 22px;
}

.aufgabe_header_tools,
.info_header_tools,
.videorahmen_header_tools {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    margin-left: auto;
    flex: 0 0 auto;
}

.aufgabe_header_tools > .rahmenicon.aufgabe_header_frame_icon,
.aufgabe_header .rahmenicon.aufgabe_header_frame_icon,
.info_header_tools > .rahmenicon.info_header_frame_icon,
.info_header .rahmenicon.info_header_frame_icon,
.videorahmen_header_tools > .rahmenicon.video_header_frame_icon,
.videorahmen_header .rahmenicon.video_header_frame_icon {
    position: static;
    top: auto;
    left: auto;
    right: auto;
    transform: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    margin: 0;
    padding: 0;
    background: transparent;
    border-radius: 0;
    flex: 0 0 auto;
    z-index: auto;
}

.aufgabe_header_tools > .rahmenicon.aufgabe_header_frame_icon img,
.aufgabe_header .rahmenicon.aufgabe_header_frame_icon img {
    width: 50px;
    height: 50px;
    max-width: 50px;
    display: block;
}

.aufgabe_header_tools > .rahmenicon.aufgabe_header_frame_icon,
.aufgabe_header .rahmenicon.aufgabe_header_frame_icon,
.info_header_tools > .rahmenicon.info_header_frame_icon,
.info_header .rahmenicon.info_header_frame_icon,
.videorahmen_header_tools > .rahmenicon.video_header_frame_icon,
.videorahmen_header .rahmenicon.video_header_frame_icon {
    width: 36px !important;
    height: 36px !important;
}

.aufgabe_header_tools > .rahmenicon.aufgabe_header_frame_icon img,
.aufgabe_header .rahmenicon.aufgabe_header_frame_icon img,
.aufgabe_header_tools > .rahmenicon.aufgabe_header_frame_icon svg,
.aufgabe_header .rahmenicon.aufgabe_header_frame_icon svg,
.info_header_tools > .rahmenicon.info_header_frame_icon img,
.info_header .rahmenicon.info_header_frame_icon img,
.info_header_tools > .rahmenicon.info_header_frame_icon svg,
.info_header .rahmenicon.info_header_frame_icon svg,
.videorahmen_header_tools > .rahmenicon.video_header_frame_icon img,
.videorahmen_header .rahmenicon.video_header_frame_icon img,
.videorahmen_header_tools > .rahmenicon.video_header_frame_icon svg,
.videorahmen_header .rahmenicon.video_header_frame_icon svg {
    width: 36px !important;
    height: 36px !important;
    max-width: 36px !important;
    display: block;
}

.aufgabe_header_tools > .rahmenicon.aufgabe_header_frame_icon,
.aufgabe_header .rahmenicon.aufgabe_header_frame_icon,
.info_header_tools > .rahmenicon.info_header_frame_icon,
.info_header .rahmenicon.info_header_frame_icon,
.videorahmen_header_tools > .rahmenicon.video_header_frame_icon,
.videorahmen_header .rahmenicon.video_header_frame_icon {
    color: #32B9AA;
}

div.aufgabe.aufgabe_framed_layout > .aufgaberahmen,
div.aufgabe.aufgabe_framed_layout > .aufgaberahmen.aufgaberahmen_layout_ready {
    margin: 0;
    padding: 0;
    border: 0;
    background-color: transparent;
    box-shadow: none;
}

div.aufgabe.aufgabe_framed_layout .aufgabe.aufgabe_inner_content,
.aufgaberahmen .aufgabe.aufgabe_inner_content {
    margin: 0;
    padding: 0;
    border: 0;
    background-color: transparent;
    box-shadow: none;
}

input.formel,
input[type="text"].formel {
    min-height: 34px;
    padding: 4px 8px;
    border: 1px solid #A8B8BC;
    background-color: #FBFDFD;
    box-sizing: border-box;
    max-width: 100%;
    transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease, width 120ms ease;
}

input.formel:focus,
input[type="text"].formel:focus {
    border-color: #32B9AA;
    background-color: #FFFFFF;
    box-shadow: 0 0 0 3px rgba(50, 185, 170, 0.16);
    outline: none;
}


/* Compact clickable done marker */
div.aufgabe.exercise_progress_tracked,
.aufgaberahmen div.aufgabe.exercise_progress_tracked {
    padding-right: 124px;
}

.exercise_progress_toggle {
    position: absolute;
    top: 14px;
    right: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 4px;
    width: 92px;
    height: 54px;
    padding: 0;
    border: 0;
    background-color: transparent;
    color: #243B3A;
    cursor: pointer;
    text-align: center;
    transition: transform 160ms ease;
}

.exercise_progress_toggle:hover,
.exercise_progress_toggle:focus-within {
    transform: translateY(-1px);
}

.exercise_progress_toggle_text {
    position: static;
    width: auto;
    height: auto;
    margin: 0;
    padding: 2px 5px;
    overflow: visible;
    clip: auto;
    border: 1px solid #B9E8E1;
    background-color: #F8FCFB;
    color: #243B3A;
    font-size: 10.5px;
    line-height: 1.15;
    white-space: nowrap;
    box-shadow: 0 1px 3px rgba(36, 59, 58, 0.08);
}

.exercise_progress_toggle input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.exercise_progress_checkmark {
    position: relative;
    display: inline-block;
    width: 28px;
    height: 28px;
    border: 3px solid #111111;
    background-color: #FFFFFF;
    box-sizing: border-box;
    transform: rotate(-14deg);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
    transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease, box-shadow 160ms ease;
}

.exercise_progress_checkmark::after {
    content: "";
    position: absolute;
    left: 8px;
    top: -8px;
    width: 11px;
    height: 27px;
    border: solid #32B9AA;
    border-width: 0 5px 5px 0;
    opacity: 0;
    transform: rotate(42deg) scale(0.65);
    transform-origin: center;
    transition: opacity 160ms ease, transform 160ms ease;
}

.exercise_progress_completed > .exercise_progress_toggle {
    background-color: transparent;
}

.exercise_progress_completed > .exercise_progress_toggle .exercise_progress_checkmark {
    background-color: #F7FFFF;
    border-color: #111111;
    transform: rotate(-14deg) scale(1.04);
    box-shadow: 0 3px 8px rgba(50, 185, 170, 0.18);
}

.exercise_progress_completed > .exercise_progress_toggle .exercise_progress_checkmark::after {
    opacity: 1;
    transform: rotate(42deg) scale(1);
}

.exercise_progress_completed > .exercise_progress_toggle .exercise_progress_toggle_text {
    border-color: #32B9AA;
    background-color: #E8F8F5;
    color: #1F4B48;
}

/* Nach der Karten-Restrukturierung (.aufgabe_header/.aufgabe_header_tools) ist der Schalter
   nicht mehr direktes Kind von .aufgabe - Nachfahren-Selektor ergänzt, sonst bleibt der Haken
   beim Markieren als "erledigt" optisch unsichtbar, obwohl der Status intern gespeichert wird. */
.exercise_progress_completed .aufgabe_header .exercise_progress_toggle {
    background-color: transparent;
}

.exercise_progress_completed .aufgabe_header .exercise_progress_toggle .exercise_progress_checkmark {
    background-color: #F7FFFF;
    border-color: #111111;
    transform: rotate(-14deg) scale(1.04);
    box-shadow: 0 3px 8px rgba(50, 185, 170, 0.18);
}

.exercise_progress_completed .aufgabe_header .exercise_progress_toggle .exercise_progress_checkmark::after {
    opacity: 1;
    transform: rotate(42deg) scale(1);
}

.exercise_progress_completed .aufgabe_header .exercise_progress_toggle .exercise_progress_toggle_text {
    border-color: #32B9AA;
    background-color: #E8F8F5;
    color: #1F4B48;
}


/* Kanonische Action-Buttons (Outline-Kontrolle, Lösung ohne Rahmen) */
.control_button,
button.control_button,
input.control_button,
.loesung_zeigen,
.loesung_verbergen,
.link_button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-height: 36px;
    margin-top: 12px;
    margin-right: 10px;
    margin-bottom: 6px;
    padding: 7px 13px;
    font: inherit;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.2;
    vertical-align: middle;
    box-sizing: border-box;
    cursor: pointer;
    text-decoration: none;
    box-shadow: none;
    transform: none;
    transition: none;
}

.control_button,
button.control_button,
input.control_button {
    min-width: 110px;
    border: 1px solid #32B9AA;
    border-radius: 8px;
    background-color: transparent;
    color: #32B9AA;
    box-shadow: none;
}

.control_button::before,
button.control_button::before {
    content: none;
    display: none;
}

.control_button:hover,
.control_button:focus,
.control_button:active {
    background-color: #E8F8F5;
    border-color: #219F98;
    color: #219F98;
    box-shadow: none;
    transform: none;
    outline: 2px solid transparent;
}

.loesung_zeigen,
.loesung_verbergen,
.link_button {
    min-width: 142px;
    border: none;
    background-color: transparent;
    color: #243B3A;
    font-weight: 500;
}

.loesung_zeigen::before,
.loesung_verbergen::before,
.link_button::before {
    content: "i";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 17px;
    height: 17px;
    border: 1px solid #32B9AA;
    color: #219F98;
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
}

.loesung_zeigen:hover,
.loesung_zeigen:focus,
.loesung_zeigen:active,
.loesung_verbergen:hover,
.loesung_verbergen:focus,
.loesung_verbergen:active,
.link_button:hover,
.link_button:focus,
.link_button:active {
    background-color: #E8F8F5;
    color: #243B3A;
    box-shadow: none;
    transform: none;
    outline: 2px solid transparent;
}

span.control_button_icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    margin: 12px 9px 6px 0;
    vertical-align: middle;
    background-image: none;
    background-repeat: no-repeat;
    box-sizing: border-box;
    box-shadow: none;
}

span.control_button_icon.right_answer {
    border: 1px solid #70C9A6;
    background: #EAF8F1 none;
    color: #16845E;
}

span.control_button_icon.right_answer::before {
    content: "\2713";
    font-size: 14px;
    font-weight: 700;
    line-height: 1;
}

span.control_button_icon.false {
    border: 1px solid #E68A8A;
    background: #FFF0F0 none;
    color: #C93D3D;
}

span.control_button_icon.false::before {
    content: "!";
    font-size: 14px;
    font-weight: 700;
    line-height: 1;
}

/* Video: nur innerer Rahmen (.videorahmen), kein doppelter äußerer .rahmen */
div.rahmen:has(.videorahmen),
.rahmen:has(.videorahmen) {
    border: none !important;
    padding: 0 !important;
    background: transparent;
    box-shadow: none;
}

/* Beispiel: äußerer .rahmen entfernen (der sichtbare Rahmen sitzt oft hier, nicht an .beispiel) */
div.rahmen:has(.beispiel),
.rahmen:has(.beispiel) {
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
    background: transparent !important;
    box-shadow: none !important;
}

/* Info, Regel, Aufgaben, Video: dickerer Rahmen + sanfte Elevation (Karten-Look) */
.inforahmen,
.aufgaberahmen,
.verweisrahmen,
.interaktionrahmen,
.videorahmen,
.adoberahmen,
.flashrahmen,
div.aufgabe,
div.aufgabe.exercise_progress_tracked {
    border-width: 2px !important;
    border-style: solid !important;
    border-color: rgba(115, 214, 194, 0.85) !important;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(15, 31, 29, 0.08), 0 1px 2px rgba(15, 31, 29, 0.06);
    transition: box-shadow 200ms ease, transform 200ms ease;
}

/* Beispiele bleiben ohne Rahmen */
div.beispiel {
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
}

div.beispiel > .inforahmen {
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
    padding-left: 0 !important;
    padding-right: 0 !important;
}

/* Innere Rahmen in Aufgaben-Karten bleiben rahmenlos (kein Doppelrahmen) */
div.aufgabe > .aufgaberahmen,
div.aufgabe .aufgaberahmen,
div.aufgabe.aufgabe_framed_layout > .aufgaberahmen,
div.aufgabe.aufgabe_framed_layout > .aufgaberahmen.aufgaberahmen_layout_ready,
.aufgaberahmen .aufgabe.aufgabe_inner_content {
    border: 0 !important;
    box-shadow: none !important;
}

.inforahmen:hover,
.aufgaberahmen:hover,
div.aufgabe:hover {
    box-shadow: 0 3px 8px rgba(15, 31, 29, 0.12), 0 1px 3px rgba(15, 31, 29, 0.08);
}

/* Structured exercise card: header tools + footer actions */
div.aufgabe.aufgabe_layout_ready,
div.aufgabe.exercise_progress_tracked.aufgabe_layout_ready,
.aufgaberahmen div.aufgabe.aufgabe_layout_ready {
    padding: 16px 18px 20px;
}

div.aufgabe.aufgabe_layout_ready.exercise_progress_tracked,
.aufgaberahmen div.aufgabe.aufgabe_layout_ready.exercise_progress_tracked {
    padding-right: 18px;
    padding-bottom: 20px;
}

.aufgabe_header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 14px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(115, 214, 194, 0.35);
}

.aufgabe_header_title {
    flex: 1 1 auto;
    min-width: 0;
}

.aufgabe_layout_ready > .aufgabe_header_title b,
.aufgabe_header_title b {
    display: inline-block;
    margin: 0;
    font-size: 1.08em;
    color: #0F1F1D;
}

.aufgabe_share_tool,
.aufgabe_share_trigger,
.video_share_tool {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin: 0;
    padding: 0;
    border: 1px solid #B9E8E1;
    border-radius: 8px;
    background-color: #FFFFFF;
    color: #243B3A;
    cursor: pointer;
    box-shadow: none;
}

.aufgabe_share_tool:hover,
.aufgabe_share_tool:focus,
.aufgabe_share_trigger:hover,
.aufgabe_share_trigger:focus,
.video_share_tool:hover,
.video_share_tool:focus {
    border-color: #32B9AA;
    background-color: #E8F8F5;
    box-shadow: none;
    transform: none;
    outline: none;
}

.aufgabe_share_qr_icon,
.aufgabe_share_link_icon,
.aufgabe_share_trigger_icon,
.video_share_qr_icon,
.video_share_link_icon,
.video_share_trigger_icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    display: block;
}

div.info.info_layout_ready > .inforahmen,
div.info.info_layout_ready:not(:has(> .inforahmen)) {
    padding: 16px 18px 20px;
}

.info_header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 8px 14px;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(115, 214, 194, 0.35);
}

.info_header_title {
    flex: 1 1 auto;
    min-width: 0;
}

.info_header_title b {
    display: inline-block;
    margin: 0;
    font-size: 1.08em;
    color: #0F1F1D;
}

.info_footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid rgba(115, 214, 194, 0.25);
}

.info_footer_qr {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-left: auto;
    flex: 0 0 auto;
}

.info_footer_qr .qrcode {
    display: none !important;
}

.info_share_trigger,
.video_share_trigger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    margin: 0;
    padding: 0;
    border: 1px solid #B9E8E1;
    border-radius: 8px;
    background-color: #FFFFFF;
    color: #243B3A;
    cursor: pointer;
    vertical-align: middle;
    box-shadow: none;
}

.info_share_trigger:hover,
.info_share_trigger:focus,
.video_share_trigger:hover,
.video_share_trigger:focus {
    border-color: #32B9AA;
    background-color: #E8F8F5;
    box-shadow: none;
    transform: none;
    outline: none;
}

.info_share_trigger_icon,
.video_share_trigger_icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    display: block;
    pointer-events: none;
}

.page_share_header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 0.5em;
}

.page_share_header h2 {
    margin: 0;
}

.page_share_tools {
    display: inline-flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex: 0 0 auto;
}

.page_share_tools > .page_share_trigger,
.page_share_tools > .page_share_pdf,
.page_share_tools > .pdf_download {
    flex: 0 0 auto;
    float: none !important;
    margin: 0 !important;
}

.page_share_trigger,
.page_share_pdf {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    border: 1px solid #B9E8E1;
    border-radius: 10px;
    background-color: #FFFFFF;
    color: #243B3A;
    cursor: pointer;
    box-shadow: none;
    text-decoration: none;
    box-sizing: border-box;
    line-height: 0;
}

/* Altes download-pdf.png sofort ausblenden (kein Aufblitzen vor dem SVG-Icon) */
.pdf_download img,
a.pdf_download img {
    display: none !important;
    visibility: hidden !important;
    width: 0 !important;
    height: 0 !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
}

.page_share_trigger:hover,
.page_share_trigger:focus,
.page_share_pdf:hover,
.page_share_pdf:focus {
    border-color: #32B9AA;
    background-color: #E8F8F5;
    box-shadow: none;
    transform: none;
    outline: none;
}

.page_share_trigger_icon,
.page_share_pdf_icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    display: block;
    pointer-events: none;
}

.qrcode_share_modal {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(15, 31, 29, 0.55);
    z-index: 1200;
}

.qrcode_share_modal_open {
    display: flex;
}

.qrcode_share_dialog {
    position: relative;
    width: min(100%, 360px);
    padding: 22px 20px 18px;
    border: 1px solid #B9E8E1;
    border-radius: 10px;
    background: #FFFFFF;
    color: #172322;
    box-shadow: 0 12px 32px rgba(15, 31, 29, 0.2);
}

.qrcode_share_close {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 32px;
    height: 32px;
    border: 0;
    border-radius: 50%;
    background: #F2FBFA;
    color: #243B3A;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}

.qrcode_share_dialog h3 {
    margin: 0 36px 16px 0;
    font-size: 1.05em;
    color: #0F1F1D;
}

.qrcode_share_preview {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    padding: 14px;
    border: 1px solid #D7F3EA;
    border-radius: 8px;
    background: #F8FCFB;
}

.qrcode_share_preview img {
    width: min(100%, 220px);
    height: auto;
    image-rendering: pixelated;
}

.qrcode_share_url {
    width: 100%;
    margin-bottom: 12px;
    padding: 8px 10px;
    border: 1px solid #A8B8BC;
    border-radius: 6px;
    background: #FBFDFD;
    color: #243B3A;
    font: inherit;
    box-sizing: border-box;
}

.qrcode_share_actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.qrcode_share_copy,
.qrcode_share_download {
    flex: 1 1 140px;
    min-height: 38px;
    padding: 8px 12px;
    border: 1px solid #32B9AA;
    border-radius: 6px;
    background: #32B9AA;
    color: #FFFFFF;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.qrcode_share_download {
    border-color: #B9E8E1;
    background: #FFFFFF;
    color: #243B3A;
}

.qrcode_share_feedback {
    min-height: 1.2em;
    margin: 10px 0 0;
    color: #16845E;
    font-size: 0.92em;
}

.aufgabe_header_tools .zufallsbutton,
.aufgabe_header_tools .zufallsbutton_renew,
.aufgabe_header_tools .zufallsbutton_return {
    margin: 0;
    display: none !important; /* Zufallsaufgabe deaktiviert */
    align-items: center;
    justify-content: center;
    gap: 7px;
    min-height: 36px;
    min-width: 142px;
    padding: 7px 13px;
    border: 1px solid #9EDFD7;
    border-radius: 4px;
    background-color: #FFFFFF;
    color: #243B3A;
    font: inherit;
    font-size: 16px;
    font-weight: 500;
    line-height: 1.2;
    box-shadow: none;
    box-sizing: border-box;
    cursor: pointer;
    white-space: nowrap;
    vertical-align: middle;
}

.aufgabe_header_tools .zufallsbutton::before,
.aufgabe_header_tools .zufallsbutton_renew::before {
    content: "\21BB";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 17px;
    height: 17px;
    border: 1px solid #32B9AA;
    color: #219F98;
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
}

.aufgabe_header_tools .zufallsbutton_return::before {
    content: "\21A9";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 17px;
    height: 17px;
    border: 1px solid #32B9AA;
    color: #219F98;
    font-size: 12px;
    font-weight: 700;
    line-height: 1;
}

.aufgabe_layout_ready .exercise_progress_toggle {
    position: static;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: auto;
    height: auto;
    min-height: 30px;
    padding: 5px 11px;
    border: 1px solid #B9E8E1;
    border-radius: 4px;
    background-color: #F8FCFB;
}

.aufgabe_layout_ready .exercise_progress_toggle_text {
    border: 0;
    background-color: transparent;
    box-shadow: none;
    padding: 0;
    font-size: 13px;
    font-weight: 500;
    line-height: 1.2;
}

.aufgabe_layout_ready .exercise_progress_checkmark {
    width: 15px;
    height: 15px;
    border-width: 2px;
    transform: rotate(-10deg);
}

.aufgabe_layout_ready .exercise_progress_checkmark::after {
    left: 4px;
    top: -5px;
    width: 7px;
    height: 15px;
    border-width: 0 3px 3px 0;
}

.aufgabe_layout_ready.exercise_progress_completed > .aufgabe_header .exercise_progress_toggle {
    border-color: #B9E8E1;
    background-color: #F8FCFB;
}

.aufgabe_layout_ready.exercise_progress_completed > .aufgabe_header .exercise_progress_toggle .exercise_progress_checkmark {
    background-color: #FFFFFF;
    border-color: #32B9AA;
    transform: rotate(-10deg) scale(1.04);
    box-shadow: 0 1px 3px rgba(50, 185, 170, 0.15);
}

.aufgabe_layout_ready.exercise_progress_completed > .aufgabe_header .exercise_progress_toggle .exercise_progress_checkmark::after {
    opacity: 1;
    transform: rotate(45deg) scale(1);
}

.aufgabe_layout_ready.exercise_progress_completed > .aufgabe_header .exercise_progress_toggle .exercise_progress_toggle_text {
    border: 0;
    background-color: transparent;
    color: #243B3A;
}

.aufgabe_footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid rgba(115, 214, 194, 0.25);
}

.aufgabe_footer_actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    flex: 0 1 auto;
}

.aufgabe_footer_qr {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-left: auto;
    flex: 0 0 auto;
}

.aufgabe_footer_qr .qrcode {
    display: none !important;
}

.aufgabe_footer .control_button,
.aufgabe_footer button.control_button,
.aufgabe_footer input.control_button,
.aufgabe_footer .loesung_zeigen,
.aufgabe_footer .loesung_verbergen,
.aufgabe_footer .link_button,
.aufgabe_footer span.control_button_icon {
    margin: 0;
}

.aufgabe_footer span.control_button_icon:not(:has(> img:not([style*="display: none"]))):not(.right_answer):not(.false) {
    display: none;
    width: 0;
    height: 0;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

@media (max-width: 640px) {
    .aufgabe_header {
        flex-direction: column;
        align-items: flex-start;
    }

    .aufgabe_header_tools {
        width: 100%;
        justify-content: flex-start;
        margin-left: 0;
    }
}

/* Video card: header tools + footer QR */
div.videorahmen.videorahmen_layout_ready {
    padding: 16px 18px 20px;
}

.videorahmen_header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px 14px;
    margin-bottom: 14px;
    padding-bottom: 12px;
    border-bottom: 1px solid rgba(115, 214, 194, 0.35);
}

.videorahmen_header_title {
    flex: 1 1 auto;
    min-width: 0;
}

.videorahmen_header_title b {
    display: inline-block;
    margin: 0;
    font-size: 1.08em;
    color: #0F1F1D;
}

.videorahmen_footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid rgba(115, 214, 194, 0.25);
}

.videorahmen_footer_qr {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-left: auto;
    flex: 0 0 auto;
}

.videorahmen_footer_qr .qrcode {
    display: none !important;
}

/* Einheitliche Kartenbreite fuer Aufgabe, Info und Video. */
div.aufgabe.aufgabe_layout_ready,
div.aufgabe.exercise_progress_tracked.aufgabe_layout_ready,
.inforahmen,
.videorahmen.videorahmen_layout_ready {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.aufgabe_header,
.info_header,
.videorahmen_header,
.aufgabe_footer,
.info_footer,
.videorahmen_footer {
    width: 100%;
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
    box-sizing: border-box;
    clear: both;
}

.aufgabe_header,
.info_header,
.videorahmen_header {
    gap: 8px 14px;
    margin-bottom: 10px;
    padding-bottom: 8px;
}

.aufgabe_footer,
.info_footer,
.videorahmen_footer {
    justify-content: space-between;
    gap: 10px;
    margin-top: 16px;
    padding-top: 14px;
}

.aufgabe_header_title,
.info_header_title,
.videorahmen_header_title,
.aufgabe_footer_actions {
    min-width: 0;
    box-sizing: border-box;
}

.aufgabe_header_tools,
.info_header_tools,
.videorahmen_header_tools,
.aufgabe_footer_qr,
.info_footer_qr,
.videorahmen_footer_qr {
    box-sizing: border-box;
    max-width: 100%;
}

/* Verschachtelte Aufgaben erscheinen als Inhalt, nicht als zweite Karte. */
div.aufgabe.aufgabe_layout_ready div.aufgabe,
div.aufgabe.aufgabe_layout_ready div.aufgabe.exercise_progress_tracked,
div.aufgabe.exercise_progress_tracked.aufgabe_layout_ready div.aufgabe,
div.aufgabe.exercise_progress_tracked.aufgabe_layout_ready div.aufgabe.exercise_progress_tracked,
.aufgaberahmen > div.aufgabe,
.aufgaberahmen > div.aufgabe.exercise_progress_tracked,
.aufgaberahmen > div.aufgabe.aufgabe_inner_content,
.aufgaberahmen > div.aufgabe.exercise_progress_tracked.aufgabe_inner_content {
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    background: transparent !important;
    margin: 14px 0 0 !important;
    padding: 0 !important;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

div.aufgabe.aufgabe_layout_ready div.aufgabe:hover,
div.aufgabe.aufgabe_layout_ready div.aufgabe.exercise_progress_tracked:hover,
div.aufgabe.exercise_progress_tracked.aufgabe_layout_ready div.aufgabe:hover,
div.aufgabe.exercise_progress_tracked.aufgabe_layout_ready div.aufgabe.exercise_progress_tracked:hover,
.aufgaberahmen > div.aufgabe:hover,
.aufgaberahmen > div.aufgabe.exercise_progress_tracked:hover {
    box-shadow: none !important;
}

@media (max-width: 640px) {
    .aufgabe_header,
    .info_header,
    .videorahmen_header,
    .aufgabe_footer,
    .info_footer,
    .videorahmen_footer {
        align-items: flex-start;
    }
}