/* ============ Dateimanager / Browser Styles ============ */

/* Browser App Layout */
.browser-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.browser-app .header {
    flex-shrink: 0;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    margin-right: 1rem;
}

.back-link:hover {
    color: var(--primary);
}

/* ============ Toolbar ============ */
.toolbar {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.toolbar-left {
    display: flex;
    gap: 0.25rem;
}

.toolbar-right {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-count {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ============ Breadcrumb ============ */
.breadcrumb-bar {
    flex: 1;
    overflow-x: auto;
    white-space: nowrap;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
    font-family: monospace;
}

.breadcrumb-item {
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.breadcrumb-item:hover {
    background: var(--bg);
    color: var(--primary);
}

.breadcrumb-separator {
    color: var(--text-secondary);
}

.breadcrumb-current {
    color: var(--text);
    font-weight: 500;
}

/* ============ Browser Main (3-Panel Layout) ============ */
.browser-main {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

/* Vertikaler Modus */
.browser-main.vertical {
    flex-direction: column;
}

.pane {
    display: flex;
    flex-direction: column;
    background: var(--bg);
    overflow: hidden;
}

/* Panel ausgeblendet */
.pane.hidden-panel {
    display: none !important;
}

.pane-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
    font-weight: 500;
    flex-shrink: 0;
}

.pane-toolbar {
    display: flex;
    gap: 0.25rem;
}

/* Panel 1: Ordner-Baum */
.pane-tree {
    width: 220px;
    min-width: 150px;
    max-width: 400px;
    border-right: 1px solid var(--border);
}

/* Panel 2: Dateiliste */
.pane-list {
    width: 300px;
    min-width: 200px;
    max-width: 600px;
    border-right: 1px solid var(--border);
}

/* Wenn Preview ausgeblendet: Dateiliste expandiert */
.pane-list.expanded {
    flex: 1;
    max-width: none;
    border-right: none;
}

/* Panel 3: Vorschau */
.pane-preview {
    flex: 1;
    min-width: 300px;
}

/* ============ Resize Handles ============ */
.resize-handle {
    flex-shrink: 0;
    background: transparent;
    position: relative;
    z-index: 10;
}

/* Horizontaler Modus: Vertikale Handles (Breite ändern) */
.browser-main:not(.vertical) .resize-handle {
    width: 6px;
    cursor: col-resize;
}

/* Vertikaler Modus: Horizontale Handles (Höhe ändern) */
.browser-main.vertical .resize-handle {
    height: 6px;
    width: 100%;
    cursor: row-resize;
}

.resize-handle:hover {
    background: var(--primary);
    opacity: 0.5;
}

.resize-handle.active {
    background: var(--primary);
    opacity: 1;
}

/* ============ Folder Tree (Baumstruktur) ============ */
.folder-tree {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0.25rem 0;
}

.tree-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.35rem 0.5rem;
    cursor: pointer;
    font-size: 0.8rem;
    white-space: nowrap;
    border-left: 3px solid transparent;
}

.tree-item:hover {
    background: var(--bg-tertiary);
}

.tree-item.active {
    background: var(--primary);
    color: white;
    border-left-color: var(--primary);
}

.tree-item.active:hover {
    background: var(--primary);
}

.tree-toggle {
    width: 16px;
    flex-shrink: 0;
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-align: center;
}

.tree-item.active .tree-toggle {
    color: rgba(255, 255, 255, 0.7);
}

.tree-icon {
    font-size: 0.9rem;
    flex-shrink: 0;
}

.tree-name {
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============ File List ============ */
.file-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.25rem;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.8rem;
    transition: background 0.1s;
}

.file-item:hover {
    background: var(--bg-tertiary);
}

.file-item.selected {
    background: var(--primary);
    color: white;
}

.file-item.folder {
    color: var(--text-secondary);
}

.file-item.folder:hover {
    color: var(--text);
}

.file-item .file-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.file-item .file-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-item .file-size {
    font-size: 0.7rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.file-item.selected .file-size {
    color: rgba(255, 255, 255, 0.7);
}

.file-item.drop-target {
    background: var(--primary);
    color: white;
    outline: 2px dashed white;
    outline-offset: -2px;
}

/* ============ File Info Bar ============ */
.file-info {
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.file-info-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.file-info-name #preview-filename {
    font-weight: 500;
    font-size: 0.9rem;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-info-name .file-size {
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 0.125rem 0.5rem;
    border-radius: 4px;
}

.file-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ============ Preview Container ============ */
.preview-container {
    flex: 1;
    overflow: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    padding: 1rem;
}

.preview-placeholder {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.preview-placeholder span {
    display: block;
    margin-top: 0.5rem;
}

/* PDF Preview */
.preview-pdf {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
}

/* Image Preview */
.preview-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* Text Preview */
.preview-text {
    width: 100%;
    height: 100%;
    background: var(--bg);
    color: var(--text);
    padding: 1rem;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.8rem;
    overflow: auto;
    border-radius: var(--radius);
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* No Preview Available */
.preview-unavailable {
    text-align: center;
    padding: 2rem;
}

.preview-unavailable .file-type-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.preview-unavailable p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* ============ Preview Window Button ============ */
#btn-open-preview {
    margin-right: 0.5rem;
}

#btn-open-preview.active {
    background: var(--success);
    color: white;
    border-color: var(--success);
}

#btn-show-preview {
    background: var(--warning);
    color: white;
    border-color: var(--warning);
}

/* ============ Toast Notifications ============ */
.toast-container {
    position: fixed;
    bottom: 1rem;
    right: 1rem;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text);
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
    max-width: 350px;
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

.toast.info {
    border-left: 4px solid var(--primary);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

/* ============ Modal Adjustments ============ */
.modal-small {
    max-width: 400px;
}

.delete-warning {
    background: var(--bg-tertiary);
    padding: 0.75rem;
    border-radius: var(--radius);
    font-family: monospace;
    font-size: 0.85rem;
    word-break: break-all;
    margin: 0.75rem 0;
}

.delete-hint {
    color: var(--danger);
    font-size: 0.8rem;
}

/* ============ Context Menu ============ */
.context-menu {
    position: fixed;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    z-index: 2000;
    min-width: 150px;
}

.context-menu-item {
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.context-menu-item:hover {
    background: var(--bg-tertiary);
}

.context-menu-item.danger {
    color: var(--danger);
}

.context-menu-separator {
    height: 1px;
    background: var(--border);
    margin: 0.25rem 0;
}

/* ============ Empty State ============ */
.empty-state {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
    padding: 1rem;
}

/* ============ Responsive / Vertikales Layout ============ */
@media (max-width: 1000px) {
    .browser-main {
        flex-direction: column;
    }

    .browser-main .pane-tree {
        width: 100% !important;
        max-width: none;
        height: 150px;
        min-height: 80px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .browser-main .pane-list {
        width: 100% !important;
        max-width: none;
        height: 200px;
        min-height: 100px;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .browser-main .pane-preview {
        min-width: auto;
        min-height: 150px;
        flex: 1;
    }

    /* Resize Handles im vertikalen Modus */
    .browser-main .resize-handle {
        width: 100%;
        height: 8px;
        cursor: row-resize;
    }
}

/* ============ Loading State ============ */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}