/* ===== Artikel-Versionshistorie ===== */

.versions-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 1.5rem;
    align-items: start;
    min-height: 500px;
}

/* ===== Versions-Liste (links) ===== */

.versions-liste {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--rz-border-color, #dee2e6);
    border-radius: 6px;
    overflow: hidden;
    background: var(--rz-base-background-color, #fff);
}

.versions-eintrag {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid var(--rz-border-color, #dee2e6);
    transition: background 0.15s;
    position: relative;
}

    .versions-eintrag:last-child {
        border-bottom: none;
    }

    .versions-eintrag:hover {
        background: var(--rz-secondary-lighter, #f8f9fa);
    }

    .versions-eintrag.aktiv {
        background: var(--rz-primary-lighter, #e8f0fe);
        border-left: 3px solid var(--rz-primary, #1a73e8);
    }

.versions-datum {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--rz-text-title-color, #2d3748);
}

.versions-autor {
    font-size: 0.8rem;
    color: var(--rz-text-tertiary-color, #6c757d);
    margin-top: 2px;
}

.versions-aenderung {
    font-size: 0.78rem;
    color: var(--rz-text-secondary-color, #495057);
    margin-top: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.versions-badge {
    display: inline-block;
    font-size: 0.7rem;
    padding: 1px 6px;
    border-radius: 10px;
    background: var(--rz-success-lighter, #d4edda);
    color: var(--rz-success-dark, #155724);
    margin-top: 4px;
}

.versions-erstellt-badge {
    background: var(--rz-info-lighter, #d1ecf1);
    color: var(--rz-info-dark, #0c5460);
}

/* ===== Diff-Panel (rechts) ===== */

.diff-panel {
    background: var(--rz-base-background-color, #fff);
    border: 1px solid var(--rz-border-color, #dee2e6);
    border-radius: 6px;
    overflow: hidden;
}

.diff-panel-kopf {
    padding: 0.75rem 1rem;
    background: var(--rz-secondary-lighter, #f8f9fa);
    border-bottom: 1px solid var(--rz-border-color, #dee2e6);
}

.diff-panel-meta {
    font-size: 0.9rem;
    color: var(--rz-text-secondary-color, #495057);
}

.diff-panel-meta strong {
    color: var(--rz-text-title-color, #2d3748);
}

.diff-panel-inhalt {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* ===== Diff-Bereiche (Felder) ===== */

.diff-bereich {
    border: 1px solid var(--rz-border-color, #dee2e6);
    border-radius: 4px;
    overflow: hidden;
}

.diff-bereich-titel {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--rz-secondary-lighter, #f8f9fa);
    border-bottom: 1px solid var(--rz-border-color, #dee2e6);
    color: var(--rz-text-secondary-color, #6c757d);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.diff-keine-aenderung {
    font-weight: 400;
    font-style: italic;
    color: var(--rz-text-tertiary-color, #adb5bd);
    text-transform: none;
    letter-spacing: 0;
}

.diff-bereich-body {
    font-size: 0.85rem;
    font-family: monospace;
    line-height: 1.5;
}

/* ===== Diff-Zeilen ===== */

.diff-linie {
    padding: 2px 0.75rem;
    display: flex;
    gap: 0.5rem;
    white-space: pre-wrap;
    word-break: break-word;
}

.diff-linie-eingefuegt {
    background: #e6ffed;
    color: #24292e;
    border-left: 3px solid #28a745;
}

.diff-linie-geloescht {
    background: #ffeef0;
    color: #24292e;
    border-left: 3px solid #dc3545;
    text-decoration-line: line-through;
    text-decoration-color: #dc3545;
}

.diff-linie-unveraendert {
    color: var(--rz-text-secondary-color, #6c757d);
    border-left: 3px solid transparent;
}

.diff-linie-kontext {
    color: var(--rz-text-secondary-color, #6c757d);
    border-left: 3px solid transparent;
    opacity: 0.8;
}

.diff-linie-modifiziert {
    background: #fff8e1;
    border-left: 3px solid #ffc107;
    color: #24292e;
}

.diff-prefix {
    color: #6c757d;
    user-select: none;
    min-width: 14px;
    font-weight: 600;
}

/* Wort-Level Hervorhebungen in modifizierten Zeilen */
.diff-wort-eingefuegt {
    background: #acf2bd;
    border-radius: 2px;
    padding: 0 2px;
}

.diff-wort-geloescht {
    background: #fdb8c0;
    border-radius: 2px;
    padding: 0 2px;
    text-decoration: line-through;
}

/* Separator zwischen nicht zusammenhängenden Diff-Blöcken */
.diff-separator {
    padding: 3px 0.75rem;
    color: var(--rz-text-tertiary-color, #adb5bd);
    font-size: 0.78rem;
    background: var(--rz-secondary-lighter, #f8f9fa);
    border-left: 3px solid var(--rz-border-color, #dee2e6);
    letter-spacing: 0.15em;
    user-select: none;
    font-family: monospace;
}

/* ===== Set-Diff (Tags, Autoren, URLs) ===== */

.diff-liste-body {
    padding: 0.5rem 0.75rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.diff-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 12px;
    font-family: inherit;
}

.diff-tag-eingefuegt {
    background: #e6ffed;
    color: #155724;
    border: 1px solid #28a745;
}

.diff-tag-geloescht {
    background: #ffeef0;
    color: #721c24;
    border: 1px solid #dc3545;
    text-decoration: line-through;
}

.diff-tag-unveraendert {
    background: var(--rz-secondary-lighter, #f8f9fa);
    color: var(--rz-text-secondary-color, #6c757d);
    border: 1px solid var(--rz-border-color, #dee2e6);
}

/* ===== Kein Diff ausgewählt ===== */

.diff-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--rz-text-tertiary-color, #adb5bd);
    font-style: italic;
    border: 1px dashed var(--rz-border-color, #dee2e6);
    border-radius: 6px;
}

/* ===== Responsive ===== */

@media (max-width: 768px) {
    .versions-layout {
        grid-template-columns: 1fr;
    }
}