/* ===== LERNEN (Lernmodus-Fenster) ===== */
.lernen-seite {
    min-height: calc(100vh - 8rem);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.lern-fenster {
    width: 100%;
    max-width: 560px;
    background: var(--panel-bg);
    border: 3px solid var(--accent);
    border-radius: 0;
    box-shadow: 6px 6px 0 #000;
}

.lern-titelbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--accent);
    padding: 0.45rem 0.85rem;
    gap: 0.75rem;
}

.lern-titelbar-titel {
    font-family: 'Press Start 2P', monospace;
    font-size: 0.45rem;
    color: #fff;
    letter-spacing: 0.12em;
    white-space: nowrap;
}

.lern-titelbar-nav {
    display: flex;
    gap: 0.55rem;
    align-items: center;
}

.lern-titelbar-nav a {
    font-family: 'Press Start 2P', monospace;
    font-size: 0.38rem;
    color: rgba(255, 255, 255, 0.85);
    letter-spacing: 0.06em;
    text-decoration: none;
    padding: 0.2rem 0.45rem;
    border: 1px solid rgba(255, 255, 255, 0.45);
}

.lern-titelbar-nav a:hover {
    background: rgba(255, 255, 255, 0.18);
    color: #fff;
}

.lern-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    padding: 0.6rem 0.85rem;
    border-bottom: 1px solid var(--border);
    background: var(--accent-muted);
}

.lern-leer {
    padding: 2.5rem 2rem;
    text-align: center;
    display: grid;
    gap: 0.85rem;
}

.lern-bereich {
    position: relative;
    padding: 1.4rem 1.5rem 1.25rem;
    border-bottom: 1px solid var(--border);
    min-height: 80px;
    transition: background 0.2s;
}

.lern-bereich--bild { padding-right: 96px; }

.lern-bereich.bereich--richtig {
    background: rgba(76, 175, 80, 0.06);
}

.lern-bild {
    position: absolute;
    top: 1.1rem;
    right: 1.1rem;
    width: 68px;
    height: 68px;
    overflow: hidden;
    border: 2px solid var(--border);
    flex-shrink: 0;
}

.lern-bild img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.lern-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.lern-zaehler {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.lern-frage {
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text);
    margin: 0;
}

.lern-zeile {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 0.85rem 1.5rem;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.12s;
    user-select: none;
}

.lern-zeile:last-child     { border-bottom: none; }
.lern-zeile:hover          { background: var(--accent-muted); }
.lern-zeile.zeile--richtig { background: rgba(76, 175, 80, 0.1); }
.lern-zeile.zeile--falsch  { background: rgba(255, 107, 107, 0.08); }

.lern-checkbox {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: var(--accent);
}

.lern-checkbox:disabled { cursor: default; opacity: 0.7; }

.zeile-text { font-size: 1.05rem; color: var(--text); line-height: 1.45; }

.lern-zeile.zeile--richtig .zeile-text { color: #2f7d32; font-weight: 600; }
body.dark-mode .lern-zeile.zeile--richtig .zeile-text { color: #66bb6a; }
.lern-zeile.zeile--falsch  .zeile-text  { color: #c0392b; }
body.dark-mode .lern-zeile.zeile--falsch  .zeile-text  { color: #ef5350; }

.lern-feedback {
    margin: 0.85rem 1.5rem;
    padding: 0.7rem 1rem;
    font-weight: 600;
    font-size: 0.95rem;
    border-left: 3px solid;
}

.lern-feedback.feedback--richtig {
    background: rgba(76, 175, 80, 0.1);
    border-color: #4caf50;
    color: #2f7d32;
}

body.dark-mode .lern-feedback.feedback--richtig { color: #66bb6a; }

.lern-feedback.feedback--falsch {
    background: rgba(255, 107, 107, 0.08);
    border-color: #ff6b6b;
    color: #c0392b;
}

body.dark-mode .lern-feedback.feedback--falsch { color: #ef5350; }

.lern-aktionen {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    padding: 0.85rem 1.25rem;
    border-top: 1px solid var(--border);
    background: var(--accent-muted);
    justify-content: center;
}

.lern-bestaetigen { flex: 1; min-width: 130px; }

@media (max-width: 600px) {
    .lern-fenster         { box-shadow: 4px 4px 0 #000; }
    .lern-bild            { width: 52px; height: 52px; top: 0.85rem; right: 0.85rem; }
    .lern-bereich--bild   { padding-right: 72px; }
    .lern-frage    { font-size: 1.1rem; }
    .lern-zeile    { padding: 0.7rem 1rem; }
    .lern-aktionen { padding: 0.75rem 1rem; }
}

/* ===== BILD-PICKER (Flashcards-Seite) ===== */
.image-picker-label {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin: 0.6rem 0 0.4rem;
}

.image-preview-wrap {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.image-preview {
    width: 160px;
    height: 90px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid var(--accent);
    display: block;
}

.image-defaults-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.image-thumb {
    position: relative;
    border: 2px solid transparent;
    border-radius: 8px;
    overflow: hidden;
    padding: 0;
    background: none;
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
    aspect-ratio: 16/9;
}

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

.image-thumb:hover {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-muted);
}

.image-thumb.selected {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-muted);
}

.thumb-check {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 0.7rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    line-height: 1;
}

.image-upload-row {
    display: grid;
    gap: 0.4rem;
}

.file-input {
    font-size: 0.9rem;
    color: var(--text-muted);
}

@media (max-width: 600px) {
    .image-defaults-grid { grid-template-columns: repeat(5, 1fr); gap: 0.35rem; }
    .karte-bild-bereich  { margin-left: 2rem; }
}