/* Interaktive Lernschicht V60 Linsen. Basis-Komponenten: .elearn-card/.card-badge
   aus blueprint_elearning.css, .elearn-btn aus lab_introduction.css. */

.lens-elearn__intro {
    margin-bottom: var(--spacing-lg);
}

.lens-elearn__formula {
    text-align: center;
    margin: var(--spacing-md) 0;
    font-size: var(--text-lg);
}

.lens-elearn__qlist {
    margin: 0;
    padding-left: var(--spacing-lg);
}

.lens-elearn__qlist > li {
    margin-bottom: var(--spacing-md);
}

.lens-elearn__q {
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.lens-elearn__note {
    width: 100%;
    padding: var(--spacing-sm);
    border: var(--border-base) solid var(--surface-border);
    border-radius: var(--radius-md);
    background: var(--surface-bg);
    color: inherit;
    font: inherit;
    resize: vertical;
}

.lens-elearn__note:focus {
    outline: none;
    border-color: var(--primary-color);
}

.lens-elearn__hint {
    margin-top: var(--spacing-md);
    font-style: italic;
    /* --text-muted does not exist; use --textcolor-50contrast (same value as .text-muted utility) */
    color: var(--textcolor-50contrast);
}

.lens-elearn__sources ul {
    margin: 0;
    padding-left: var(--spacing-lg);
}

.lens-elearn__pdf-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-weight: 600;
}

.lens-elearn__cta {
    margin-top: var(--spacing-xl);
    text-align: center;
}

/* Versuchsaufbau-Skizze (inline-SVG) + Symbol-Legende */
.lens-elearn__svg {
    display: block;
    width: 100%;
    max-width: 560px;
    height: auto;
    margin: var(--spacing-md) auto;
    /* Linien, Pfeile und Text erben die Textfarbe der Karte (currentColor). */
}

.lens-elearn__lens {
    fill: rgba(var(--primary-rgb), 0.12);
    stroke: var(--primary-color);
    stroke-width: 2;
}

.lens-elearn__lens--ghost {
    fill: none;
    stroke-dasharray: 5 4;
}

.lens-elearn__screen {
    fill: currentColor;
    opacity: 0.35;
}

.lens-elearn__svg-sym {
    fill: currentColor;
    font-style: italic;
    font-size: 17px;
    font-family: Georgia, "Times New Roman", serif;
}

.lens-elearn__svg-lbl {
    fill: currentColor;
    font-size: 11px;
}

.lens-elearn__caption {
    text-align: center;
    font-size: var(--text-sm, 0.9em);
    color: var(--textcolor-50contrast);
    margin-top: var(--spacing-xs);
}

.lens-elearn__legend {
    margin: var(--spacing-sm) 0 0;
    padding-left: var(--spacing-lg);
}