@import url('https://fonts.googleapis.com/css2?family=Libre+Franklin:wght@700;800;900&family=Source+Sans+3:wght@400;600;700&display=swap');
@import url('https://api.fontshare.com/v2/css?f[]=sharpie@700,800,900&display=swap');

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    min-height: 100dvh;
    background-color: var(--color-ovgu-red);
    background-image: url("svgs/bg-pattern-index.svg");
    background-repeat: repeat;
}

/* Design tokens */
:root {
    /* Layout */
    --otto-aspect-ratio: 36.756 / 46.058829;
    --otto-breadcrumb-size: clamp(32px, 8vw, 5rem);
    --layer-content-width: clamp(18rem, 96vw, 56.25rem);
    --flashcard-height: clamp(15rem, 74.4svh, 26rem);

    /* Typography */
    --font-display: 'Libre Franklin', 'Helvetica Neue', Arial, sans-serif;
    --font-body: 'Source Sans 3', 'Segoe UI', sans-serif;

    /*Hauptfarben, insbesondere für Hintergründe, Schatten, Buttons*/
    --color-off-white: #f4f0ea;
    --color-black: #000;
    --color-white: #fff;

    /*OVGU-Rot für Breadcrumb, Background des Headers, Akzentfarbe auf der Startseite */
    --color-ovgu-red: #7a003f;

    /*Akzentfarben für Icons und Spaced-Repetition-Buttons*/
    --color-orange: #ff5722;
    --color-yellow: #ffdf00;
    --color-green: #a1db58;

    /* Flashcard-Typ-Icons */
    --type-icon-standard: var(--color-ovgu-red);
    --type-icon-prozess: var(--color-orange);
    --type-icon-mnemo: #c4a800;
    --type-icon-oklusion: var(--color-green);

    /* Brutalist pattern */
    --border-brutal-sm: 2px solid var(--color-black);
    --border-brutal-md: 4px solid var(--color-black);
    --shadow-brutal-sm: 6px 6px 0 rgba(0, 0, 0);
    --hover-bg-invert: var(--color-black);
    --hover-fg-invert: var(--color-white);
    --hover-bg-invert-dark: var(--color-white);
    --hover-fg-invert-dark: var(--color-black);
}

/* Invert hover: light default (white bg, black text) */
.add-course-form button:hover,
.add-topic-form button:hover,
.flashcard-style-option:hover,
.mnemo-flashcard .mnemo-reveal-all-btn:hover,
.mnemo-flashcard .mnemo-key-btn:hover:not(.revealed) {
    background: var(--hover-bg-invert);
    color: var(--hover-fg-invert);
}

/* Invert hover: dark default (black bg, white text) */
.login:hover,
.dropdown-toggle:hover,
.header-action-row .header-action-add-btn:hover,
.header-action-row .layer-login-btn:hover,
.header-action-row .cards-manage-btn:not(.is-active):hover,
.cards-manage-btn.is-active:hover {
    background: var(--hover-bg-invert-dark);
    color: var(--hover-fg-invert-dark);
}

.login:hover {
    border: 4px solid var(--color-black);
}

/* Definiert den Stil der Icon-Buttons (Upvote,Downvote,Comment) in layer 2, 3 und 4*/
.icon-btn {
    width: 36px; 
    height: 36px;
    border: 2px solid transparent;
    background: transparent;
    padding: 0; 
    cursor: pointer;
    display: inline-flex; 
    align-items: center; 
    justify-content: center;
    color: var(--color-black);
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.icon-btn svg { 
    width: 100%;
    height: 100%;
}

.icon-btn svg path { fill: currentColor; }

.icon-btn:hover,
.icon-btn:focus-visible,
.delete-icon:hover,
.delete-icon:focus-visible {
    transform: translate(-3px, -3px);
    border-color: var(--color-black);
    box-shadow: 4px 4px 0 var(--color-black);
    background: var(--hover-bg-invert);
    color: var(--hover-fg-invert);
}
  
.comment-icon { transform: translateY(-1px); }

.comment-icon:hover,
.comment-icon:focus-visible {
    transform: translate(-3px, -4px);
}

.upvote-icon.is-active { color: #a1db58; }
.downvote-icon.is-active { color: #ff5722; }
.report-icon.is-active { color: #ff5722; }

.upvote-icon.is-active:hover,
.upvote-icon.is-active:focus-visible,
.downvote-icon.is-active:hover,
.downvote-icon.is-active:focus-visible,
.report-icon.is-active:hover,
.report-icon.is-active:focus-visible,
.delete-icon.is-flagged:hover,
.delete-icon.is-flagged:focus-visible {
    background: var(--hover-bg-invert);
    color: var(--hover-fg-invert);
}

.comment-count {
    margin-left: 0.2rem;
    font-size: 0.7rem;
    font-weight: 700;
    line-height: 1;
}

/* Kommentar-Panel (Overlay + Liste + Formular) */
.comments-modal {
    position: fixed;
    inset: 0;
    z-index: 110;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.comments-modal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
}

.comments-panel {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: min(92vw, 22rem);
    max-height: min(85svh, 40rem);
    padding: 12px;
    border: var(--border-brutal-md);
    background: var(--color-white);
    box-shadow: var(--shadow-brutal-sm);
}

.comments-panel__header {
    display: flex;
    align-items: center;
    padding-right: 36px;
    flex-shrink: 0;
}

.comments-panel__header h3 {
    margin: 0;
    font-size: 16px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.comments-panel__filter {
    display: flex;
    border: var(--border-brutal-sm);
    flex-shrink: 0;
}

.comments-panel__filter-tab {
    flex: 1;
    min-height: 40px;
    border: none;
    border-right: var(--border-brutal-sm);
    background: var(--color-off-white);
    font-size: 0.78rem;
    font-weight: 700;
    cursor: pointer;
    padding: 6px 4px;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.comments-panel__filter-count {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 1px 5px;
    border: var(--border-brutal-sm);
    background: var(--color-white);
    line-height: 1.2;
}

.comments-panel__filter-tab.is-active .comments-panel__filter-count {
    background: var(--color-off-white);
}

.comments-panel__filter-tab:last-child {
    border-right: none;
}

.comments-panel__filter-tab.is-active {
    background: var(--color-white);
    box-shadow: inset 0 -3px 0 var(--color-ovgu-red);
}

.comments-list {
    flex: 1;
    margin: 0;
    padding: 0;
    list-style: none;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0;
    min-height: 4rem;
}

.comments-list.is-filter-comments .change-suggestion-item {
    display: none;
}

.comments-list.is-filter-suggestions .comment-item {
    display: none;
}

.comments-list__status {
    padding: 0.5rem 0;
    color: #555;
    font-size: 0.85rem;
}

.comment-item {
    padding: 6px 0;
    border-bottom: 1px solid #eee;
    background: transparent;
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-item__head {
    display: flex;
    align-items: center;
    gap: 4px;
}

.comment-item__author {
    font-weight: 700;
    font-size: 0.85rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.comment-item__date {
    margin-left: auto;
    flex-shrink: 0;
    font-size: 0.72rem;
    color: #777;
}

.comment-item__delete {
    flex-shrink: 0;
    border: none;
    background: transparent;
    color: var(--color-orange);
    font-size: 0.85rem;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    min-width: 24px;
}

.comment-item__delete:hover {
    color: var(--color-black);
}

.comment-item__text {
    margin: 2px 0 0;
    font-size: 0.82rem;
    line-height: 1.35;
    white-space: pre-wrap;
    word-break: break-word;
}

.comments-panel .report-icon {
    width: 28px;
    height: 28px;
    min-width: 28px;
    min-height: 28px;
    flex-shrink: 0;
}

.comments-panel__footer {
    display: flex;
    justify-content: flex-start;
    gap: 8px;
    margin-top: auto;
    flex-shrink: 0;
}

.comments-panel__compose,
.comments-panel__change {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 40px;
    border: var(--border-brutal-sm);
    background: var(--color-white);
    padding: 6px 10px;
    font-size: 0.82rem;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
}

.comments-panel__compose svg,
.comments-panel__change svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.comments-panel__compose svg path,
.comments-panel__change svg path {
    fill: currentColor;
}

.comments-panel__compose:hover,
.comments-panel__change:hover {
    background: var(--hover-bg-invert);
    color: var(--hover-fg-invert);
}

.change-form {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-top: var(--border-brutal-sm);
    padding-top: 8px;
}

.change-form[hidden] {
    display: none;
}

.change-form__value-wrap {
    display: flex;
    gap: 8px;
    align-items: stretch;
}

.change-form__name,
.change-form__value {
    border: var(--border-brutal-sm);
    padding: 8px 10px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--color-white);
}

.change-form__value {
    flex: 1;
}

.change-form__submit {
    border: var(--border-brutal-sm);
    background: var(--color-white);
    padding: 6px 16px;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
}

.change-form__submit:hover {
    background: var(--hover-bg-invert);
    color: var(--hover-fg-invert);
}

.change-form-error {
    color: var(--color-orange);
    font-size: 0.85rem;
    font-weight: 700;
}

.change-form-error[hidden] {
    display: none;
}

.change-suggestion-item {
    border: var(--border-brutal-sm);
    border-left: 4px solid var(--color-green);
    padding: 8px 10px;
    background: #f7f7ef;
    margin-bottom: 6px;
}

.change-suggestion-item:last-child {
    margin-bottom: 0;
}

.change-suggestion-item--applied {
    border-left-color: #888;
    background: #efefef;
    opacity: 0.85;
}

.change-suggestion-item__head {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
}

.change-suggestion-item__badge {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 2px 6px;
    border: var(--border-brutal-sm);
    background: var(--color-white);
}

.change-suggestion-item--applied .change-suggestion-item__badge {
    background: #ddd;
}

.change-suggestion-item__author {
    font-weight: 700;
    font-size: 0.9rem;
}

.change-suggestion-item__date {
    flex: 1;
    font-size: 0.75rem;
    color: #777;
}

.change-suggestion-item__value {
    margin: 8px 0;
    font-size: 1rem;
    font-weight: 700;
}

.change-suggestion-item__actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.change-suggestion-item__preview {
    margin: 8px 0;
    cursor: pointer;
}

.change-suggestion-card-preview {
    min-height: 90px;
    cursor: pointer;
    pointer-events: auto;
    box-shadow: none;
}

.change-suggestion-item__preview:hover .change-suggestion-card-preview,
.change-suggestion-item__preview:focus-visible .change-suggestion-card-preview {
    transform: translate(-3px, -3px);
}

.change-suggestion-card-preview::before {
    display: none;
}

.change-suggestion-card-preview .link-content {
    padding: 14px 12px 8px;
}

.change-suggestion-card-preview .course-title {
    font-size: 0.85rem;
}

.comments-panel__flashcard-error {
    margin: 0 12px 8px;
    padding: 8px 10px;
    border: var(--border-brutal-sm);
    background: #fff3f3;
    color: #a00;
    font-size: 0.85rem;
}

.comments-panel__flashcard-error[hidden] {
    display: none;
}

.comment-form {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-top: var(--border-brutal-sm);
    padding-top: 8px;
}

.comment-form[hidden] {
    display: none;
}

.comments-panel__footer[hidden] {
    display: none;
}

.comment-form-error {
    border: var(--border-brutal-sm);
    border-color: var(--color-orange);
    color: var(--color-orange);
    padding: 6px 10px;
    font-size: 0.85rem;
    font-weight: 700;
}

.comment-form__name,
.comment-form__text {
    border: var(--border-brutal-sm);
    padding: 8px 10px;
    font: inherit;
    font-size: 0.95rem;
}

.comment-form__text-wrap {
    position: relative;
}

.comment-form__text {
    display: block;
    width: 100%;
    box-sizing: border-box;
    resize: vertical;
    min-height: 3.5rem;
    padding-right: 2.75rem;
    padding-bottom: 2.25rem;
}

.comment-form__submit {
    position: absolute;
    right: 6px;
    bottom: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: var(--border-brutal-sm);
    background: var(--color-white);
    padding: 0;
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
}

.comment-form__submit:hover:not(:disabled) {
    background: var(--hover-bg-invert);
    color: var(--hover-fg-invert);
}

.comment-form__submit:disabled {
    opacity: 0.6;
    cursor: default;
}

/* Spaced-repetition Fortschritt (Mini-Balken, Kompakt 5) */
.sr-progress-bars,
.progress-mini-bars {
    display: flex;
    align-items: flex-end;
    gap: 3px;
    height: 1.85rem;
    flex-shrink: 0;
    font-family: var(--font-body);
    line-height: 1;
    pointer-events: none;
}

.progress-mini-bars__col {
    position: relative;
    width: 0.7rem;
    height: 100%;
}

.progress-mini-bars__n {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
    font-size: 0.8rem;
    font-weight: 900;
    color: #ffffff;
    line-height: 1;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: -0.02em;
}

.progress-mini-bars__bar {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    min-height: 2px;
    z-index: 0;
    border: 1px solid rgba(0, 0, 0, 0.3);
}

.delete-icon {
    width: 28px;
    height: 28px;
    border: 2px solid transparent;
    background: transparent;
    padding: 0;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #000000;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.delete-icon.is-flagged {
    color: #ff6b6b;
}

.delete-icon svg {
    width: 100%;
    height: 100%;
}

.delete-icon svg path {
    fill: currentColor;
}

.container {
    max-width: 1050px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 100vh;
}

/* Breadcrumb: color steps per layer (no text) */
/* Containerstruktur */
.breadcrumb {
    display: flex;
    align-items: center;
    margin: 20px 0 20px 10px;
}

/* Basisklasse für alle Gesichter-Buttons */
.breadcrumb-step {
    width: var(--otto-breadcrumb-size);
    height: var(--otto-breadcrumb-size);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    text-decoration: none;

}

/* NUR fähige Links bekommen den Zeiger */
a.breadcrumb-step {
    cursor: pointer;
}

/* Gesicht leuchtet hell auf, wenn es geklickt wird (für Touch-Screens) */
a.breadcrumb-step:active {
    filter: brightness(1.8);
}

/* SVG-Handling innerhalb der Buttons */
.breadcrumb-face-svg {
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
}

.breadcrumb-face-svg .otto-face,
.otto-first-layer .otto-face {
    transition: fill 0.2s ease;
}

.breadcrumb-face-svg .otto-outline,
.otto-first-layer .otto-outline {
    fill: #ffffff;
    stroke: #ffffff;
    stroke-linejoin: round;
}

/* Startseite: Logo per Modul (otto-face.js) */
.otto-logo-host {
    display: flex;
    flex-shrink: 0;
    line-height: 0;
    transform: translateY(0.15em);
}

.otto-first-layer {
    height: 1.8em;
    width: auto;
    aspect-ratio: var(--otto-aspect-ratio);
    flex-shrink: 0;
    transform: translateY(3px);
}

.otto-first-layer .otto-face {
    fill: var(--color-ovgu-red);
}

.breadcrumb-face-svg .otto-face {
    fill: var(--color-ovgu-red);
}

/* INTERAKTIV: Beim Hovern über einen LINK färbt sich das Gesicht schwarz */
a.breadcrumb-step:hover .breadcrumb-face-svg .otto-face {
    fill: var(--color-black);
}

/* Layer page: breadcrumb + links grid stacked, then actions below */
.layer-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    padding-top: 6px;
}

.layer-links-stack {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: var(--layer-content-width);
}

.layer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    width: 100%;
    margin-bottom: 0.25rem;
    position: relative;
    z-index: 0;
}

.layer-header .breadcrumb,
.layer-links-stack .breadcrumb {
    margin: 0;
    flex-shrink: 0;
}

.layer-header-end {
    display: inline-flex;
    align-items: center;
    gap: clamp(0.35rem, 2vw, 0.75rem);
    flex-shrink: 0;
}

/* Layer page title — OVGU brand style at header scale */
.layer-brand {
    margin: 0;
    padding: 0;
    font-family: 'Sharpie', 'Comic Sans MS', cursive;
    font-size: clamp(1.25rem, 4vw, 2.25rem);
    font-weight: 900;
    font-style: italic;
    line-height: 1.05;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: #050505;
    transform: skewX(-10deg) rotate(-2deg) translateY(3px);
    text-shadow:
    1px 2px 0 #da0070,
    2px 3px 0 #ff0084;
    -webkit-text-stroke: 1px #000;
    white-space: nowrap;
    flex-shrink: 0;
}

.layer-links-stack #links-container,
.layer-links-stack #topics-container {
    width: 100%;
    max-width: none;
    margin: 0;
    position: relative;
    z-index: 1;
}

.layer-links-stack .kv-filter-row,
.layer-links-stack .flashcard-section {
    position: relative;
    z-index: 1;
}

#links-container {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
    width: 100%;
}

.login {
    flex-shrink: 0;
    align-self: stretch;
    width: 3rem;
    margin: 0;
    padding: 0;
    border: none;
    background: #000000;
    color: #ffffff;
    font: var(--font-body);
    font-family: inherit;
    font-size: clamp(0.5rem, 2.6vw, 0.8rem);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transition: background 0.15s ease, color 0.15s ease;
    height: var(--selector-control-height);
}

/* Brutalist skew shadow (link-item, topic-item, flashcard, custom-dropdown, login) */
.link-item,
.topic-item,
.flashcard,
.custom-dropdown,
.login {
    position: relative;
    isolation: isolate;
    box-shadow: none;
}

.link-item::before,
.topic-item::before,
.flashcard::before,
.custom-dropdown::before,
.login::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgb(0, 0, 0, 0.8);
    z-index: 0;
    transform-origin: bottom left;
    transform: translate(12px, 12px) skewX(-5deg);
    transition: transform 0.2s ease, opacity 0.15s ease;
}

.link-item > *,
.topic-item > *,
.flashcard > *,
.custom-dropdown > *,
.login > * {
    position: relative;
    z-index: 1;
}

.link-item:not(:has(.sticker-bar:hover)):hover::before,
.link-item:not(:has(.sticker-bar:hover)):focus-visible::before,
.topic-item:not(:has(.sticker-bar:hover)):hover::before,
.topic-item:not(:has(.sticker-bar:hover)):focus-visible::before {
    transform: translate(16px, 16px) skewX(-5deg);
}

.link-item:not(:has(.sticker-bar:hover)):hover,
.link-item:not(:has(.sticker-bar:hover)):focus-visible,
.topic-item:not(:has(.sticker-bar:hover)):hover,
.topic-item:not(:has(.sticker-bar:hover)):focus-visible {
    transform: translate(-4px, -4px);
}

.topic-item:not(:has(.sticker-bar:hover)):hover,
.topic-item:not(:has(.sticker-bar:hover)):focus-visible {
    transform: translate(-3px, -3px);
}

body.bg-layer2 .link-item:not(:has(.sticker-bar:hover)):hover,
body.bg-layer2 .link-item:not(:has(.sticker-bar:hover)):focus-visible {
    transform: translate(-3px, -3px);
}

.login:hover::before,
.login:focus-visible::before {
    opacity: 0;
}

.login > span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: transparent;
    writing-mode: inherit;
    text-orientation: inherit;
    transition: color 0.15s ease;
}

/* Link item styling (Max-Brutalist) */
.link-item {
    background: #fff;
    padding: 0;
    transition: transform 0.2s ease;
    min-height: 130px;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    border: var(--border-brutal-sm);
}

/* Style für die Sticker-Bars mit jeweils spezifischen Regeln für layer 2, 3 und 4*/
.sticker-bar {
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    background: var(--color-off-white)
}

.sticker-bar svg path {
    stroke: transparent;
}

body.bg-layer2 .sticker-bar {
    display: flex;
    justify-content: space-evenly;
    padding-top: 4px;
    padding-bottom: 4px;
    border-top: 2px solid var(--color-black);
}

body.bg-layer3 .sticker-bar {
    display: flex;
    justify-content: space-evenly;
    flex-direction: row;
    align-self: stretch;
    padding: 0 10px;
    border-left: 2px solid var(--color-black);
}

body.bg-layer4 .sticker-bar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    padding: 10px;
    border-top: 2px solid var(--color-black);
}

.sticker-bar .progress-mini-bars__n {
    color: black;
}

.vote-count {
    margin-left: 0.2rem;
    font-size: 0.7rem;
    font-weight: 700;
    line-height: 1;
}

.link-content {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px 16px 8px;
    background-color: #fff;
    background-image: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 6px,
        rgba(163, 78, 122, 0.06) 6px,
        rgba(163, 78, 122, 0.06) 12px
    );
}

.course-title {
    font-size: 18px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    overflow-wrap: anywhere;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    overflow: hidden;
}

.course-title .md-line {
    display: inline;
}

.course-title .md-math-inline {
    white-space: nowrap;
}

.course-title .katex {
    font-size: 0.9em;
}

.course-title img.md-image {
    max-width: 100%;
    height: auto;
}

/* Skew Shadow — Header-Action-Rows (Design 5) */
.header-action-row {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    flex-wrap: wrap;
    background: var(--color-off-white);
    border: var(--border-brutal-sm);
    border-radius: 0;
    box-shadow: var(--shadow-brutal-sm);
}

.header-action-row .header-action-add-btn,
.header-action-row .cards-manage-btn,
.header-action-row .layer-login-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: clamp(36px, 5vw, 40px);
    min-width: clamp(36px, 5vw, 40px);
    padding: 0 16px;
    border: 2px solid var(--color-black);
    border-radius: 0;
    background: #000000;
    font-size: 13px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: #fff;
    cursor: pointer;
    line-height: 1;
    flex-shrink: 0;
}

.header-action-row .header-action-add-btn {
    font-size: 22px;
    width: clamp(36px, 5vw, 40px);
    padding: 0;
    background: var(--color-ovgu-red)
}

.header-action-row .cards-manage-btn {
    width: clamp(36px, 5vw, 40px);
    padding: 0;
}

.header-action-row .cards-manage-btn.is-active {
    background: var(--color-white);
    color: var(--color-black);
}

.header-action-row .cards-manage-btn:not(.is-active):hover .cards-manage-btn__icon span {
    background: var(--color-black);
}

.header-action-row .cards-manage-btn.is-active .cards-manage-btn__icon span {
    background: var(--color-black);
}

.layer-login-btn {
    height: clamp(32px, 5vw, 48px);
    padding: 0 16px;
    border: 2px solid black;
    background: #fff;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    line-height: 1;
    flex-shrink: 0;
}

.cards-manage-btn {
    height: clamp(32px, 5vw, 48px);
    min-width: clamp(32px, 5vw, 48px);
    border: 2px solid black;
    background: #fff;
    padding: 0 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 900;
    text-transform: uppercase;
    cursor: pointer;
    flex-shrink: 0;
}

.cards-manage-btn__icon {
    width: 20px;
    height: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
    flex-shrink: 0;
}

.cards-manage-btn__icon span {
    background: #fff;
}

.cards-manage-btn__label {
    line-height: 1;
    white-space: nowrap;
}

.cards-manage-btn__label:empty {
    display: none;
}

/* Icon-Quadrate auf invertiertem Hintergrund sichtbar halten */
.cards-manage-btn:not(.is-active):hover .cards-manage-btn__icon span {
    background: var(--color-white);
}

/* Aktiver (eingerasteter) Zustand: Kartenverwaltung ist geöffnet */
.cards-manage-btn.is-active {
    background: var(--hover-bg-invert);
    color: var(--hover-fg-invert);
}

.cards-manage-btn.is-active .cards-manage-btn__icon span {
    background: var(--color-white);
}

/* Hover auf aktivem Button kündigt das Ausschalten (Zurücknavigieren) an */
.cards-manage-btn.is-active:hover .cards-manage-btn__icon span {
    background: var(--color-black);
}

.add-course-form {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.add-course-form input {
    padding: 8px 12px;
    border: var(--border-brutal-sm);
    font-size: 16px;
    min-width: 200px;
}

.add-course-form button {
    padding: 8px 16px;
    border: var(--border-brutal-sm);
    background: #fff;
    font-weight: 700;
    cursor: pointer;
}

.add-topic-form {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.add-topic-form input {
    padding: 8px 12px;
    border: var(--border-brutal-sm);
    font-size: 16px;
    min-width: 200px;
}

.add-topic-form button {
    padding: 8px 16px;
    border: var(--border-brutal-sm);
    background: #fff;
    font-weight: 700;
    cursor: pointer;
}

.form-action-btn {
    min-width: 44px;
    height: 40px;
    padding: 0;
    font-size: 24px;
    font-weight: 900;
    line-height: 1;
}

.form-action-btn--confirm {
    color: #178f33;
}

.form-action-btn--cancel {
    color: #c61f1f;
}

.form-action-btn--confirm:hover {
    background: #178f33 !important;
    color: #ffffff !important;
}

.form-action-btn--cancel:hover {
    background: #c61f1f !important;
    color: #ffffff !important;
}

.header-action-add-btn.is-hidden {
    display: none;
}

.flashcard-style-modal,
.flashcard-type-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 100;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.flashcard-style-modal.is-open,
.flashcard-type-modal.is-open {
    display: flex;
}

.flashcard-type-modal.is-open {
    z-index: 120;
}

.flashcard-style-modal::before,
.flashcard-type-modal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
}

.flashcard-style-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
    border: var(--border-brutal-md);
    background: #fff;
    box-shadow: var(--shadow-brutal-sm);
    width: min(90vw, 28rem);
    max-width: 28rem;
    position: relative;
    z-index: 1;
}

.flashcard-style-form h3 {
    margin: 0 0 8px 0;
    font-size: 18px;
}

.flashcard-style-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.flashcard-style-option {
    padding: 12px 16px;
    border: var(--border-brutal-sm);
    background: #fff;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.style-option-icon {
    width: 28px;
    height: 28px;
    display: inline-flex;
    filter: drop-shadow(2px 2px 0 rgba(0, 0, 0, 0.85));
}

.style-option-icon svg {
    width: 100%;
    height: 100%;
}

.flashcard-style-option[data-style="standard"] .style-option-icon {
    color: var(--type-icon-standard);
}

.flashcard-style-option[data-style="prozess"] .style-option-icon {
    color: var(--type-icon-prozess);
}

.flashcard-style-option[data-style="mnemo"] .style-option-icon {
    color: var(--type-icon-mnemo);
}

.flashcard-style-option[data-style="oklusion"] .style-option-icon {
    color: var(--type-icon-oklusion);
}

.flashcard-type-form-wrap {
    display: none;
    position: relative;
    z-index: 1;
}

.flashcard-type-form-wrap:has(.flashcard-type-form.is-open) {
    display: block;
}

.flashcard-type-modal .flashcard-type-form {
    display: flex;
    flex-direction: column;
    padding: 20px;
    border: var(--border-brutal-md);
    background: #fff;
    box-shadow: var(--shadow-brutal-sm);
    width: min(92vw, var(--layer-content-width));
    max-width: var(--layer-content-width);
    max-height: min(85vh, 34rem);
    overflow-y: auto;
}

.flashcard-type-form h3 {
    margin: 0 0 8px 0;
    font-size: 18px;
}

.flashcard-form-error {
    padding: 0.6rem 0.75rem;
    border: var(--border-brutal-sm);
    border-left: 5px solid var(--color-orange);
    background: #fff5f5;
    color: #000;
    font-size: 0.85rem;
    font-weight: 700;
    line-height: 1.45;
}

.flashcard-form-error[hidden] {
    display: none;
}

.flashcard-type-form label {
    font-weight: 700;
    display: block;
    margin-bottom: 4px;
}

.flashcard-type-form input,
.flashcard-type-form textarea {
    width: 100%;
    padding: 8px 12px;
    border: var(--border-brutal-sm);
    font-size: 16px;
    box-sizing: border-box;
}

.flashcard-type-form textarea {
    min-height: 80px;
    resize: vertical;
}

.flashcard-type-form-actions {
    display: flex;
    gap: 8px;
}

.flashcard-type-form-actions button {
    padding: 8px 16px;
    border: var(--border-brutal-sm);
    background: var(--color-black);
    color: var(--color-white);
    font-weight: 700;
    cursor: pointer;
}

.flashcard-type-form-actions button:hover {
    background: var(--color-white);
    color: var(--color-black);
}

.prozess-step-pair {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
}

.prozess-step-pair label {
    margin-bottom: 0;
}

.flashcard-entry-block {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: var(--border-brutal-sm);
}

.flashcard-entry-block:first-child {
    margin-top: 8px;
    padding-top: 0;
    border-top: none;
}

.flashcard-entry-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.flashcard-entry-header label {
    margin-bottom: 0;
}

.flashcard-entry-remove {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    padding: 0;
    border: var(--border-brutal-sm);
    background: var(--color-orange);
    color: #fff;
    font-weight: 900;
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
}

.flashcard-entry-remove:hover,
.flashcard-entry-remove:focus-visible {
    background: var(--color-white);
    color: var(--color-black);
}

.flashcard-entry-remove:disabled,
.flashcard-entry-remove[hidden] {
    visibility: hidden;
    pointer-events: none;
}

.prozess-add-step-btn {
    margin-top: 12px;
    padding: 8px 16px;
    border: var(--border-brutal-sm);
    background: var(--color-ovgu-red);
    color: var(--color-white);
    font-weight: 700;
    cursor: pointer;
    align-self: flex-start;
}

.prozess-add-step-btn:hover {
    background: var(--color-white);
    color: var(--color-black);
}

/* Rich-Text-Felder: Toolbar, Dropzone, Bildvorschau */
.rich-field {
    display: flex;
    flex-direction: column;
    border: var(--border-brutal-sm);
    background: #fff;
}

.rich-field.is-dragover {
    outline: 3px dashed var(--color-ovgu-red);
    outline-offset: -3px;
    background: #fff5fb;
}

.rich-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 6px;
    border-bottom: var(--border-brutal-sm);
    background: #f4f4f4;
}

.rich-toolbar-btn {
    min-width: 32px;
    padding: 4px 10px;
    border: var(--border-brutal-sm);
    background: #fff;
    font-size: 14px;
    font-weight: 700;
    line-height: 1.2;
    cursor: pointer;
}

.rich-toolbar-btn:hover {
    background: var(--hover-bg-invert);
    color: var(--hover-fg-invert);
}

.rich-file-input {
    display: none;
}

.flashcard-type-form .rich-field textarea {
    border: none;
    margin: 0;
}

.image-preview-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 6px;
}

.image-preview-strip:not(:empty) {
    padding: 8px 6px;
    border-top: var(--border-brutal-sm);
}

.image-preview-thumb {
    position: relative;
    width: 64px;
    height: 64px;
    border: var(--border-brutal-sm);
    overflow: hidden;
}

.image-preview-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.image-preview-remove {
    position: absolute;
    top: -1px;
    right: -1px;
    width: 20px;
    height: 20px;
    border: var(--border-brutal-sm);
    background: var(--color-orange);
    color: #fff;
    font-weight: 900;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    padding: 0;
}

/* Gerenderte Markdown-Inhalte auf der Karte */
.standard-side .md-image,
.prozess-body .md-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0.4rem 0;
    border: 2px solid var(--color-black);
}

.standard-side ul,
.prozess-body ul {
    margin: 0.3rem 0;
    padding-left: 1.25rem;
}

.standard-side li,
.prozess-body li {
    text-align: left;
}

.standard-side .md-line,
.prozess-body .md-line {
    display: block;
}

/* Highlight-Markierungen */
.md-hl {
    padding: 0 0.15em;
    border-radius: 2px;
}

.md-hl--orange {
    background: var(--color-orange);
}

.md-hl--yellow {
    background: var(--color-yellow);
}

.md-hl--green {
    background: var(--color-green);
}

/* Toolbar-Farb-Swatches */
.rich-toolbar-btn--hl {
    min-width: 28px;
    min-height: 28px;
    padding: 4px;
}

.rich-toolbar-btn--hl-orange {
    background: var(--color-orange);
}

.rich-toolbar-btn--hl-yellow {
    background: var(--color-yellow);
}

.rich-toolbar-btn--hl-green {
    background: var(--color-green);
}

.rich-toolbar-btn--hl:hover {
    filter: brightness(0.85);
    color: var(--color-black);
}

.rich-toolbar-btn--hl-orange:hover {
    background: var(--color-orange);
}

.rich-toolbar-btn--hl-yellow:hover {
    background: var(--color-yellow);
}

.rich-toolbar-btn--hl-green:hover {
    background: var(--color-green);
}

/* KaTeX in Karten */
.standard-side .md-math-block,
.prozess-body .md-math-block {
    margin: 0.5rem 0;
    overflow-x: auto;
}

.standard-side .md-math-inline,
.prozess-body .md-math-inline {
    white-space: nowrap;
}

.standard-side .katex,
.prozess-body .katex {
    font-size: 1.05em;
}

/* Topics section */

#topics-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
}

/* Topic item styling (Max-Brutalist Zeilenlayout) */
.topic-item {
    background: #ffffff;
    padding: 0;
    transition: transform 0.2s ease;
    display: flex;
    flex-direction: row;
    align-items: stretch;
    cursor: pointer;
    width: 100%;
    border: var(--border-brutal-sm);
}

.topic-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    text-align: left;
    padding: 16px 20px;
    min-width: 0;
    background-color: #fff;
    background-image: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 6px,
        rgba(204, 157, 181, 0.12) 6px,
        rgba(204, 157, 181, 0.12) 12px
    );
}

.topic-title {
    font-size: 18px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    min-width: 0;
    overflow-wrap: anywhere;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    overflow: hidden;
}

/* Study Selector Section */
.study-selector-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 40px;
    width: 100%;
}

.selector-container {
    width: 100%;
    max-width: 800px;
    text-align: center;
}

.selector-row {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    width: 100%;
    margin: 0 12px;
}

.inline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    font-size: clamp(1.75rem, 5vw, 3rem);
}

.title-stack {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    line-height: 1;
}

/* OVGU — Sharpie Black (Fontshare), Version 7 */
.ovgu-brand {
    margin: 0;
    padding: 0;
    font-family: 'Sharpie', 'Comic Sans MS', cursive;
    font-size: clamp(2.75rem, 10vw, 8.5rem);
    font-weight: 900;
    font-style: italic;
    line-height: 1.05;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: #050505;
    transform: skewX(-12deg) rotate(-2deg) translateY(0.45em);
    text-shadow: 
    3px 5px 0 #94004c, 
    5px 8px 0 #b5005e,
    7px 11px 0 #da0070,
    9px 14px 0 #ff0084;
    -webkit-text-stroke: 1px #000;
    position: relative;
    z-index: 1;
}

.selector-search-row {
    --selector-control-height: clamp(3.75rem, 10vw, 4.5rem);
    display: flex;
    align-items: stretch;
    gap: 0.75rem;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.headline-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
}

.headline {
    color: #ffffff;
    text-transform: uppercase;
    margin: 0;
    font-size: clamp(1.5rem, 5vw, 4rem);
    font-family: var(--font-display);
    font-weight: 800;
    text-align: center;
    line-height: 0.9;
    text-shadow: 4px 8px 0 var(--color-black);
    position: relative;
    z-index: 2;
}

.selector-search-row .dropdown-wrapper {
    flex: 1;
    min-width: 0;
    width: auto;
    margin: 0;
    max-width: none;
}

.dropdown-wrapper {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

/* Custom Dropdown Styles */
.custom-dropdown {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: stretch;
    width: 100%;
    height: var(--selector-control-height);
}

.dropdown-input {
    flex: 1;
    min-width: 0;
    width: auto;
    height: 100%;
    padding: 20px;
    font-size: 18px;
    font-weight: 700;
    background-image: repeating-linear-gradient(-45deg, transparent, transparent 6px, rgba(163, 78, 122, 0.06) 6px, rgba(163, 78, 122, 0.06) 12px);
    border: none;
    outline: none;
    box-shadow: none;
    transition: transform 0.3s ease;
    font-family: inherit;
}

.dropdown-input::placeholder {
    color: #000000;
    text-transform: none;
    font-weight: 800;
    letter-spacing: normal;
}

/* Lässt den Placeholder-Text "Wähle deinen Studiengang..." verschwinden, wenn der Nutzer in das Input-Feld klickt*/
.dropdown-input:focus::placeholder {
    color: transparent;
}

.dropdown-toggle-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    align-self: stretch;
    background: var(--color-black);
    flex-shrink: 0;
}

.dropdown-toggle {
    background: transparent;
    color: #ffffff;
    border: none;
    width: 40px;
    height: 100%;
    font-size: 16px;
    font-weight: 900;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease, color 0.15s ease;
}

.dropdown-toggle:hover {
    transform: none;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #ffffff;
    border: 6px solid var(--color-black);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    box-shadow: var(--shadow-brutal-sm);
}

.dropdown-option {
    padding: 15px 20px;
    cursor: pointer;
    border-bottom: 2px solid #f0f0f0;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
}

.dropdown-option:last-child {
    border-bottom: none;
}

.dropdown-option:hover,
.dropdown-option.selected {
    background: #7a003f;
    color: #fff;
    font-weight: 700;
}

.option-name {
    font-size: 16px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.no-results {
    text-align: center;
    color: #666666;
    font-style: italic;
    padding: 20px;
}



/* Responsive design */
@media (max-width: 768px) {
    #links-container {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .link-item {
        min-height: 120px;
    }
    
    .topic-item {
        flex-direction: column;
        min-height: auto;
    }

    .bg-layer3 .sticker-bar {
        width: 100%;
        align-self: auto;
        padding: 10px 14px;
    }
    
    .dropdown-input {
        padding: 15px;
        font-size: 16px;
    }

    .dropdown-toggle-bar {
        padding: 0 8px;
    }
    
    .dropdown-toggle {
        width: 35px;
        height: 35px;
        font-size: 14px;
    }
    
    .option-name {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    #links-container {
        grid-template-columns: minmax(0, 1fr);
    }

    .layer-brand {
        font-size: clamp(1rem, 3.5vw, 1.5rem);
    }

    .layer-header-end {
        gap: 0.25rem;
    }
    
    .link-item {
        min-height: 120px;
    }
    
    .dropdown-input {
        padding: 12px;
        font-size: 14px;
    }

    .dropdown-toggle-bar {
        padding: 0 6px;
    }
    
    .dropdown-toggle {
        width: 30px;
        height: 30px;
        font-size: 12px;
    }
    
    .dropdown-menu {
        border-width: 4px;
        max-height: 250px;
    }
    
    .dropdown-option {
        padding: 12px 15px;
    }
    
    .option-name {
        font-size: 13px;
    }
}

/* Flashcard Section */
.flashcard-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    height: clamp(15rem, 74.4svh, 34rem);
    width: 100%;
}

.flashcard-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: min(100%, var(--layer-content-width));
    max-width: var(--layer-content-width);
    margin-inline: auto;
}

.flashcard-container.is-hidden {
    display: none;
}

/* Flashcard Styles (link-item layout) */
.flashcard {
    background: #ffffff;
    padding: 0;
    transition: transform 0.2s ease;
    cursor: pointer;
    width: min(100%, var(--layer-content-width));
    max-width: var(--layer-content-width);
    flex-shrink: 0;
    height: var(--flashcard-height);
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.flashcard-vote-group {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-self: start;
}

.flashcard-flex-column {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 10px;
    justify-self: end;
}

.flashcard.showing-answer {
    background: #ffffff;
}

.flashcard-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    text-align: center;
    padding: 0.8rem 0.8rem 0.5rem;
    background-color: #fff;
    width: 100%;
    max-width: 100%;
    max-height: 100%;
    min-height: 0;
    overflow-x: hidden;
    overflow-y: auto;
    overflow-wrap: break-word;
}

/* Flashcard Controls */
.flashcard-controls {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 20px;
    justify-self: center;
}

/* Standard flashcard: dot indicator + Blocksatz-Typografie (Design 3) */
.flashcard.standard-flashcard .flashcard-content {
    position: relative;
    align-items: stretch;
    justify-content: flex-start;
    text-align: left;
}

.flashcard.standard-flashcard .standard-indicator {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 2;
    display: flex;
    gap: 0.5rem;
}

.flashcard.standard-flashcard .standard-dot {
    width: 0.55rem;
    height: 0.55rem;
    border: 2px solid var(--color-black);
    border-radius: 50%;
    background: transparent;
    transition: background 0.2s;
}

.flashcard.standard-flashcard:not(.showing-answer) .standard-dot--q {
    background: var(--color-ovgu-red);
}

.flashcard.standard-flashcard.showing-answer .standard-dot--a {
    background: var(--color-green);
}

.flashcard.standard-flashcard .standard-side {
    display: none;
    width: 100%;
    flex: 1 1 auto;
    min-height: 0;
    align-items: stretch;
    justify-content: flex-start;
    text-align: justify;
    hyphens: auto;
    padding: 1.75rem 0.25rem 0.5rem;
}

.flashcard.standard-flashcard:not(.showing-answer) .standard-side--question {
    display: flex;
}

.flashcard.standard-flashcard.showing-answer .standard-side--answer {
    display: flex;
}

.flashcard.standard-flashcard .standard-side p,
.flashcard.standard-flashcard .standard-side .standard-side-text {
    width: 100%;
    font-size: 0.98rem;
    font-weight: 600;
    line-height: 1.7;
    text-align: justify;
    text-align-last: left;
    hyphens: auto;
    color: var(--color-black);
    margin: 0;
}

.spaced-rep-buttons {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
}

.spaced-rep-buttons button {
    padding: 14px 22px;
    font-size: 0.85rem;
    font-weight: 900;
    border: 2px solid rgb(0 0 0 / 0.5);
    cursor: pointer;
    min-width: 48px;
    min-height: 44px;
    color: #fff;
    box-shadow:
        inset 0 3px 6px rgb(0 0 0 / 0.45),
        inset 0 -1px 0 rgb(255 255 255 / 0.15);
    transition: box-shadow 0.1s ease, transform 0.1s ease;
}

.spaced-rep-buttons button:hover {
    box-shadow:
        inset 0 5px 10px rgb(0 0 0 / 0.55),
        inset 0 -1px 0 rgb(255 255 255 / 0.1);
    transform: translateY(1px);
}

.spaced-rep-buttons button:active {
    transform: translateY(4px) scale(0.96);
    box-shadow: inset 0 6px 12px rgb(0 0 0 / 0.6);
}

.sr-btn-1 { background: #ff5722; }
.sr-btn-2 { background: #ffdf00; color: #000; }
.sr-btn-3 { background: #a1db58; }

/* Prozess-type flashcard (Timeline – Gestrichelt) */
.prozess-flashcard .flashcard-content {
    text-align: left;
    align-items: stretch;
}

.prozess-flashcard .prozess-timeline {
    position: relative;
    width: 100%;
}

.prozess-flashcard .prozess-step-max {
    position: absolute;
    top: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 2.4rem;
    padding: 0.25rem 0.45rem;
    border: var(--border-brutal-sm);
    background: var(--color-black);
    color: #fff;
    line-height: 1.1;
}

.prozess-flashcard .prozess-step-max-num {
    font-size: 1rem;
    font-weight: 900;
    font-variant-numeric: tabular-nums;
}

.prozess-flashcard .prozess-step-max-label {
    font-size: 0.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.85;
}

.prozess-flashcard .prozess-header {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    padding-bottom: 0.6rem;
    margin-bottom: 0.75rem;
    padding-right: 3.25rem;
    border-bottom: var(--border-brutal-sm);
}

.prozess-flashcard .prozess-title {
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #000;
}

.prozess-flashcard .prozess-steps {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.prozess-flashcard .prozess-step {
    display: grid;
    grid-template-columns: 1.4rem 1fr;
    gap: 0.6rem;
    position: relative;
}

.prozess-flashcard .prozess-step:not(:last-child) {
    padding-bottom: 0.5rem;
    margin-bottom: 0.5rem;
    border-bottom: 2px dashed #bbb;
}

.prozess-flashcard .prozess-rail {
    position: relative;
    display: flex;
    justify-content: center;
    padding-top: 0.15rem;
}

.prozess-flashcard .prozess-dot {
    width: 0.85rem;
    height: 0.85rem;
    border-radius: 50%;
    background: #fff;
    flex-shrink: 0;
}

.prozess-flashcard .prozess-step.is-current .prozess-dot {
    width: 0.85rem;
    height: 0.85rem;
    background: var(--color-ovgu-red);
    border: 2px solid var(--color-black);
}

.prozess-flashcard .prozess-step.is-done .prozess-dot {
    background: var(--color-green);
    border-color: var(--color-green);
    border: 2px solid var(--color-black);
}

.prozess-flashcard .prozess-body {
    padding-bottom: 0.75rem;
}

.prozess-flashcard .prozess-q {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 0.25rem;
    align-items: start;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 0.35rem;
    color: #222;
}

.prozess-flashcard .prozess-q-num {
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}

.prozess-flashcard .prozess-q-text {
    min-width: 0;
}

.prozess-flashcard .prozess-step.is-current .prozess-q {
    font-weight: 600;
    color: var(--color-black);
}

.prozess-flashcard .prozess-a {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.45;
    padding: 0;
    background: transparent;
    border-left: none;
    color: #434343;
}

/* Mnemo-type flashcard (Chips) */
.mnemo-flashcard .flashcard-content {
    text-align: left;
    align-items: stretch;
}

.mnemo-flashcard .mnemo-chips {
    width: 100%;
}

.mnemo-flashcard .mnemo-header {
    padding-bottom: 0.6rem;
    margin-bottom: 0.75rem;
    border-bottom: var(--border-brutal-sm);
}

.mnemo-flashcard .mnemo-title {
    font-size: 1rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #000;
}

.mnemo-flashcard .mnemo-keys-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 0.85rem;
}

.mnemo-flashcard .mnemo-key-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem 0.75rem;
    border: var(--border-brutal-sm);
    border-radius: 999px;
    background: #fff;
    color: #000;
    font-size: 0.85rem;
    font-weight: 900;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.mnemo-flashcard .mnemo-key-btn:hover:not(.revealed) {
    transform: translateY(-1px);
}

.mnemo-flashcard .mnemo-key-btn.revealed {
    background: var(--color-ovgu-red);
    color: var(--color-white);
    border-color: var(--color-ovgu-red);
}

.mnemo-flashcard .mnemo-toolbar {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 0.65rem;
}

.mnemo-flashcard .mnemo-reveal-all-btn {
    padding: 0.3rem 0.65rem;
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: var(--border-brutal-sm);
    background: #fff;
    color: #000;
    cursor: pointer;
}

.mnemo-flashcard .mnemo-inhalte {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.mnemo-flashcard .mnemo-inhalt-block {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    font-size: 0.82rem;
    font-weight: 700;
    line-height: 1.45;
    padding: 0.4rem 0.55rem;
    background: var(--color-off-white);
    border-left: 4px solid var(--color-off-white);
    margin: 0;
    min-width: 0;
    max-width: 100%;
    overflow-wrap: anywhere;
}

.mnemo-flashcard .mnemo-inhalt-key {
    font-weight: 900;
    color: var(--color-ovgu-red);
    flex: 0 1 auto;
    min-width: 0;
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
}

/* Responsive design for flashcards */
@media (max-width: 768px) {
    .flashcard-content {
        padding: 16px 12px 8px;
    }

    .flashcard-question h3,
    .flashcard-answer h3 {
        font-size: 1.3rem;
        letter-spacing: 1px;
    }

    .flashcard-question p,
    .flashcard-answer p,
    .flashcard.standard-flashcard .standard-side p,
    .flashcard.standard-flashcard .standard-side .standard-side-text {
        font-size: 0.95rem;
    }
}

@media (max-width: 450px) {
    .flashcard {
        min-width: 0;
        border-width: 6px;
    }

    body.bg-layer4 .sticker-bar {
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto;
        gap: 8px;
        padding: 8px;
        width: 100%;
        min-width: 0;
    }

    .flashcard-vote-group {
        gap: 6px;
    }

    .flashcard-flex-column {
        justify-self: end;
    }

    .flashcard-controls {
        grid-column: 1 / -1;
        justify-self: center;
    }

    .spaced-rep-buttons {
        gap: 6px;
    }

    .spaced-rep-buttons button {
        padding: 10px 14px;
        min-width: 36px;
        min-height: 36px;
        font-size: 0.75rem;
    }

    .icon-btn,
    .delete-icon {
        width: 28px;
        height: 28px;
    }

    .flashcard-content {
        padding: 12px 10px 6px;
    }

    .flashcard-question h3,
    .flashcard-answer h3 {
        font-size: 1.1rem;
    }

    .flashcard-question p,
    .flashcard-answer p,
    .flashcard.standard-flashcard .standard-side p,
    .flashcard.standard-flashcard .standard-side .standard-side-text {
        font-size: 0.9rem;
    }
}

/* ======================================================== */
/* LAYER 4: FULL VIEWPORT APP (scoped, no scroll)           */
/* Kept outside the LAYER-BG block so it survives           */
/* regeneration via scripts/bake-bg-pattern.js              */
/* Scoped via .layer4-app (nur layer4.html), damit andere   */
/* Seiten mit bg-layer4-Hintergrund scrollbar bleiben       */
/* ======================================================== */

/* Clip at the root so neither the horizontal shadow overflow
   nor the coupled vertical scrollbar can appear */
html:has(body.layer4-app) {
    height: 100svh;
    min-height: 0;
    overflow: hidden;
}

/* 1. Lock layer4 to the viewport (no scroll) */
body.layer4-app {
    height: 100svh;
    min-height: 0;
    overflow: hidden;
    --otto-breadcrumb-size: clamp(32px, min(8vw, 16svh), 5rem);
}

body.layer4-app .container {
    height: 100%;
    min-height: 0;
    align-items: stretch;
}

body.layer4-app .layer-row,
body.layer4-app .layer-links-stack {
    height: 100%;
    min-height: 0;
}

/* 2. Card fills the available height below the header (no centering gaps) */
body.layer4-app .flashcard-section {
    flex: 1 1 auto;
    height: auto;
    min-height: 0;
    justify-content: flex-start;
    overflow: visible;
}

body.layer4-app .flashcard-container {
    flex: 1 1 auto;
    height: 100%;
    min-height: 0;
    justify-content: flex-start;
    padding-bottom: 16px;
    box-sizing: border-box;
    overflow: visible;
}

body.layer4-app .flashcard {
    height: 100%;
    min-height: 0;
    max-height: 30rem;
    overflow: visible;
}

/* 3. Header icons shrink on low viewport height (floor: 32px) */
body.layer4-app .header-action-row .header-action-add-btn {
    width: clamp(32px, min(5vw, 12svh), 40px);
    height: clamp(32px, min(5vw, 12svh), 40px);
}

body.layer4-app .header-action-row .layer-login-btn,
body.layer4-app .header-action-row .cards-manage-btn {
    height: clamp(32px, min(5vw, 12svh), 40px);
}

body.layer4-app .header-action-row .cards-manage-btn {
    width: clamp(32px, min(5vw, 12svh), 40px);
    min-width: clamp(32px, min(5vw, 12svh), 40px);
}

/* ======================================================== */
/* KARTENVERWALTUNG (Kartenverwaltung.html)                 */
/* ======================================================== */

/* Typ-Symbol in der oberen rechten Ecke des Karten-Tiles */
.kv-typ-icon {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 2;
    width: 22px;
    height: 22px;
    display: inline-flex;
    filter: drop-shadow(2px 2px 0 rgba(0, 0, 0, 0.85));
}

.kv-typ-icon svg {
    width: 100%;
    height: 100%;
}

.kv-typ-icon--standard {
    color: var(--type-icon-standard);
}

.kv-typ-icon--prozess {
    color: var(--type-icon-prozess);
}

.kv-typ-icon--mnemo {
    color: var(--type-icon-mnemo);
}

.kv-typ-icon--oklusion {
    color: var(--type-icon-oklusion);
}

/* Filterleiste: Volltextsuche, Typ-Filter, Sortierung */
.kv-filter-row {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
    width: 100%;
}

.kv-search-input {
    flex: 1 1 200px;
    min-width: 160px;
    padding: 8px 12px;
    border: var(--border-brutal-sm);
    background: #fff;
    font-size: 16px;
    font-family: inherit;
}

.kv-sort-select {
    padding: 8px 12px;
    border: var(--border-brutal-sm);
    background: #fff;
    font-size: 13px;
    font-weight: 700;
    font-family: inherit;
    text-transform: uppercase;
    cursor: pointer;
}

/* Modales Fenster für die Karten-Detailansicht */
.kv-card-modal {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 100;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.kv-card-modal.is-open {
    display: flex;
}

.kv-card-modal--stacked {
    z-index: 120;
}

.kv-card-modal::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
}

.kv-modal-card-wrap {
    position: relative;
    z-index: 1;
    width: min(92vw, var(--layer-content-width));
}

.kv-modal-card-wrap .flashcard {
    width: 100%;
    max-width: none;
}

/* Schließen-Button als X in der oberen rechten Ecke */
.close-btn {
    position: absolute;
    top: -16px;
    right: -16px;
    z-index: 2;
    width: 44px;
    height: 44px;
    border: var(--border-brutal-md);
    background: var(--color-orange);
    color: #fff;
    font-size: 22px;
    font-weight: 900;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover,
.close-btn:focus-visible {
    background: #fff;
    color: var(--color-black);
}

/* Oklusion-Editor (Erstellen) und Viewer (Lernen) */
.okl-editor .okl-upload,
.okl-viewer .okl-stage-wrap,
.oklusion-flashcard .okl-stage-wrap {
    border: var(--border-brutal-md);
    box-shadow: var(--shadow-brutal-sm);
    background-color: #fff;
}

.okl-editor .okl-upload {
    padding: 1.5rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: background 0.12s ease, color 0.12s ease;
}

.okl-editor .okl-upload.is-dragover {
    background: var(--color-ovgu-red);
    color: #fff;
}

.okl-upload-text {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 0.95rem;
    text-transform: uppercase;
}

.okl-upload-hint {
    margin-top: 0.35rem;
    font-weight: 700;
    font-size: 0.85rem;
    opacity: 0.65;
}

.okl-editor-workspace {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.okl-editor-workspace[hidden] {
    display: none !important;
}

.okl-add-rect[hidden],
.okl-lasso-btn[hidden] {
    display: none !important;
}

.okl-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.okl-btn {
    border: var(--border-brutal-sm);
    background: #fff;
    color: var(--color-black);
    font-family: var(--font-display);
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.45rem 0.75rem;
    cursor: pointer;
    font-size: 0.75rem;
    line-height: 1;
}

.okl-btn:hover {
    background: var(--color-black);
    color: #fff;
}

.okl-btn.is-active {
    background: var(--color-ovgu-red);
    color: #fff;
}

.okl-btn--icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem;
    width: 36px;
    height: 36px;
}

.okl-btn--icon svg {
    width: 100%;
    height: 100%;
}

.okl-editor .okl-change-img {
    margin-left: auto;
}

.okl-stage-wrap {
    background-image:
        linear-gradient(45deg, #e6e6e6 25%, transparent 25%),
        linear-gradient(-45deg, #e6e6e6 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e6e6e6 75%),
        linear-gradient(-45deg, transparent 75%, #e6e6e6 75%);
    background-size: 24px 24px;
    background-position: 0 0, 0 12px, 12px -12px, -12px 0;
}

.okl-stage {
    position: relative;
    display: block;
    line-height: 0;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

.okl-stage__img,
.okl-stage img {
    display: block;
    width: 100%;
    height: auto;
    -webkit-user-drag: none;
    user-select: none;
    pointer-events: none;
}

.okl-lasso-layer {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.okl-stage.is-lasso .okl-lasso-layer {
    pointer-events: auto;
    cursor: crosshair;
}

.okl-lasso-layer .okl-live {
    fill: hsla(329, 100%, 38%, 0.45);
    stroke: var(--color-black);
    stroke-width: 3px;
    stroke-linejoin: round;
}

.okl-overlays {
    position: absolute;
    inset: 0;
}

.okl-stage.is-lasso .okl-overlays {
    pointer-events: none;
}

.okl-stage.is-lasso .okl-occ-delete {
    pointer-events: auto;
}

.okl-occ {
    position: absolute;
    box-sizing: border-box;
    border: 3px dashed var(--color-black);
    background: hsla(329, 100%, 38%, 0.55);
    cursor: move;
}

.okl-occ.type-lasso {
    background: transparent;
    border: none;
    cursor: move;
}

.okl-occ.type-lasso svg {
    display: block;
    width: 100%;
    height: 100%;
    overflow: visible;
    pointer-events: none;
}

.okl-occ.type-lasso polygon {
    fill: hsla(329, 100%, 38%, 0.55);
    stroke: var(--color-black);
    stroke-width: 3px;
    stroke-dasharray: 6 5;
    stroke-linejoin: round;
}

.okl-handle {
    position: absolute;
    width: 14px;
    height: 14px;
    background: #fff;
    border: 2px solid var(--color-black);
}

.okl-handle.nw { left: -8px; top: -8px; cursor: nwse-resize; }
.okl-handle.sw { left: -8px; bottom: -8px; cursor: nesw-resize; }
.okl-handle.se { right: -8px; bottom: -8px; cursor: nwse-resize; }

.okl-occ-delete {
    position: absolute;
    top: -13px;
    right: -13px;
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-black);
    background: var(--color-orange);
    color: #fff;
    font-weight: 900;
    font-size: 16px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.okl-stage.is-preview .okl-occ {
    background: var(--color-ovgu-red);
    border: var(--color-ovgu-red);
    cursor: pointer;
}

.okl-stage.is-preview .okl-occ.type-lasso {
    background: transparent;
    border: none;
}

.okl-stage.is-preview .okl-occ.type-lasso polygon {
    fill: var(--color-ovgu-red);
    stroke: var(--color-ovgu-red);
    stroke-width: 2px;
    stroke-dasharray: none;
}

.okl-stage.is-preview .okl-handle,
.okl-stage.is-preview .okl-occ-delete {
    display: none;
}

.okl-stage.is-preview .okl-occ.revealed {
    background: transparent;
    border-color: transparent;
}

.okl-stage.is-preview .okl-occ.type-lasso.revealed polygon {
    fill: transparent;
    stroke: transparent;
}

.okl-hint {
    font-weight: 700;
    font-size: 0.85rem;
    min-height: 1.2em;
    opacity: 0.8;
    margin: 0;
}

.okl-viewer .okl-hint:empty {
    display: none;
}

.oklusion-flashcard .flashcard-content {
    padding: 0;
    align-items: stretch;
    overflow-x: hidden;
    overflow-y: auto;
}

.oklusion-flashcard .okl-viewer,
.oklusion-flashcard .okl-stage-wrap {
    width: 100%;
}

.flashcard-type-form--oklusion {
    width: min(92vw, 42rem);
    max-height: min(90svh, 52rem);
    overflow-y: auto;
}

.flashcard-type-form--oklusion .okl-editor {
    margin-top: 0.5rem;
}