:root {
    --fs-card-radius: var(--radius-md, 12px);
    --fs-card-radius-lg: var(--radius-lg, 16px);
    --fs-gap: var(--space-md, 1rem);
    --fs-gap-lg: var(--space-lg, 1.5rem);
    --fs-border-color: var(--border-color, #1f2937);
    --fs-surface: var(--bg-card, #020617);
    --fs-surface-alt: var(--bg-surface, #020617);
    --fs-hover-bg: var(--bg-surface-hover, rgba(148, 163, 184, 0.16));
    --fs-text: var(--text-primary, #e5e7eb);
    --fs-text-muted: var(--text-secondary, #9ca3af);
    --fs-folder-color: var(--warning, #f59e0b);
    --fs-file-color: var(--primary, #6366f1);
}

.fs-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--fs-gap);
    margin-bottom: var(--fs-gap-lg);
    padding: 0.75rem 1rem;
    border-radius: var(--fs-card-radius-lg);
    background: var(--fs-surface);
    border: 1px solid var(--fs-border-color);
}

.fs-toolbar-left {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
    flex: 1;
}

.fs-breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem;
    font-size: 0.875rem;
    min-width: 0;
}

.fs-breadcrumb-size {
    margin-left: 0.35rem;
    padding: 0.12rem 0.5rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.35);
    font-size: 0.75rem;
    color: var(--fs-text-muted);
    white-space: nowrap;
}

.fs-breadcrumb-upload-btn {
    margin-left: 0.35rem;
}

.fs-breadcrumb-item {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--fs-text-muted);
}

.fs-breadcrumb-item button {
    background: transparent;
    border: none;
    padding: 0;
    margin: 0;
    color: var(--fs-text);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
}

.fs-breadcrumb-item button:hover {
    text-decoration: underline;
}

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

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

.fs-view-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.125rem;
    border-radius: 999px;
    background: var(--fs-surface-alt);
    border: 1px solid var(--fs-border-color);
}

.fs-view-btn {
    width: 32px;
    height: 32px;
    border-radius: 999px;
    border: none;
    background: transparent;
    color: var(--fs-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

.fs-view-btn:hover {
    background: var(--fs-hover-bg);
    color: var(--fs-text);
}

.fs-view-btn.active {
    background: var(--primary, #6366f1);
    color: #0b1120;
    transform: translateY(-1px);
}

.fs-content {
    min-height: calc(60vh - 80px);
}

.fs-empty-state {
    margin-top: 1.5rem;
    padding: 2rem 1.5rem;
    border-radius: var(--fs-card-radius-lg);
    background: var(--fs-surface);
    border: 1px dashed var(--fs-border-color);
    text-align: center;
    color: var(--fs-text-muted);
}

.fs-empty-icon {
    margin-bottom: 0.75rem;
    font-size: 2rem;
    color: var(--fs-text-muted);
}

.fs-empty-icon-error {
    color: var(--danger, #ef4444);
}

.fs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: var(--fs-gap-lg);
}

.fs-list {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.fs-card {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.9rem 0.95rem;
    border-radius: var(--fs-card-radius);
    background: var(--fs-surface);
    border: 1px solid var(--fs-border-color);
    cursor: pointer;
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.08s ease,
        box-shadow 0.15s ease;
}

.fs-card:hover {
    border-color: var(--primary, #6366f1);
    background: var(--fs-hover-bg);
    transform: translateY(-1px);
    box-shadow: 0 8px 16px rgba(15, 23, 42, 0.35);
}

.fs-card-main {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.fs-card-icon {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    flex-shrink: 0;
    background: rgba(148, 163, 184, 0.16);
    color: var(--fs-file-color);
}

.fs-card-icon-folder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.1rem;
}

.fs-card-folder .fs-card-icon {
    background: rgba(250, 204, 21, 0.08);
    color: var(--fs-folder-color);
}

/* Icone tipo file colorate (card più carine) */
.fs-card-icon.fs-icon-type-image {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.25) 0%, rgba(22, 163, 74, 0.35) 100%);
    color: #22c55e;
}
.fs-card-icon.fs-icon-type-video {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.25) 0%, rgba(220, 38, 38, 0.35) 100%);
    color: #ef4444;
}
.fs-card-icon.fs-icon-type-audio {
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.25) 0%, rgba(147, 51, 234, 0.35) 100%);
    color: #a855f7;
}
.fs-card-icon.fs-icon-type-3d {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.25) 0%, rgba(37, 99, 235, 0.35) 100%);
    color: #3b82f6;
}
.fs-card-icon.fs-icon-type-pdf {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.22) 0%, rgba(185, 28, 28, 0.32) 100%);
    color: #dc2626;
}
.fs-card-icon.fs-icon-type-slides {
    background: linear-gradient(135deg, rgba(234, 88, 12, 0.25) 0%, rgba(194, 65, 12, 0.35) 100%);
    color: #ea580c;
}
.fs-card-icon.fs-icon-type-doc {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.22) 0%, rgba(29, 78, 216, 0.32) 100%);
    color: #2563eb;
}
.fs-card-icon.fs-icon-type-sheet {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.22) 0%, rgba(22, 128, 61, 0.32) 100%);
    color: #16a34a;
}
.fs-card-icon.fs-icon-type-text {
    background: linear-gradient(135deg, rgba(148, 163, 184, 0.3) 0%, rgba(100, 116, 139, 0.4) 100%);
    color: #94a3b8;
}
.fs-card-icon.fs-icon-type-default {
    background: rgba(148, 163, 184, 0.2);
    color: var(--fs-file-color);
}

.fs-card-body {
    flex: 1;
    min-width: 0;
}

.fs-card-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--fs-text);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    max-width: 100%;
}

.fs-card-name-text {
    display: inline-block;
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: all 0.12s ease;
}

.fs-card-meta {
    margin-top: 0.15rem;
    font-size: 0.78rem;
    color: var(--fs-text-muted);
}

.fs-card-meta-secondary {
    margin-top: 0.1rem;
    font-size: 0.75rem;
    opacity: 0.85;
}

.fs-folder-size-inline {
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--fs-text-muted);
}

.fs-folder-user-icon {
    font-size: 0.75rem;
    color: var(--fs-text-muted);
    opacity: 0.9;
}

.fs-card:hover .fs-card-name-text,
.fs-list-row:hover .fs-card-name-text {
    white-space: normal;
    overflow: visible;
}

.fs-folder-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.15rem;
    position: absolute;
    top: 0.4rem;
    right: 0.4rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.12s ease;
}

.fs-card-folder:hover .fs-folder-actions,
.fs-list-row:hover .fs-folder-actions {
    opacity: 1;
    pointer-events: auto;
}

.fs-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    margin-top: 0.35rem;
}

.fs-card-type-badge {
    padding: 0.12rem 0.5rem;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    background: rgba(148, 163, 184, 0.2);
    color: var(--fs-text-muted);
}

.fs-card-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.15rem;
}

.fs-icon-btn {
    width: 26px;
    height: 26px;
    border-radius: 999px;
    border: none;
    background: transparent;
    color: var(--fs-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.12s ease, color 0.12s ease, transform 0.08s ease;
}

.fs-icon-btn:hover {
    background: rgba(148, 163, 184, 0.18);
    color: var(--fs-text);
    transform: translateY(-1px);
}

.fs-icon-btn--danger:hover {
    color: var(--danger, #ef4444);
}

/* Modale preview: dimensioni come gallery (Doc/UI/Modal_Components_Standard) */
#fsPreviewModal .fs-preview-modal-dialog,
#fsPreviewModal .modal-dialog-document.fs-preview-modal-dialog {
    max-width: 90vw;
    width: 90vw;
    min-height: 85vh;
}

.fs-modal-path-value {
    word-break: break-all;
    font-size: 0.85rem;
}

.fs-list-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.75rem;
    border-radius: var(--fs-card-radius);
    border: 1px solid transparent;
}

.fs-list-row:hover {
    border-color: var(--fs-border-color);
    background: var(--fs-hover-bg);
}

.fs-list-name {
    flex: 1;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.fs-list-name span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.fs-list-meta {
    width: 180px;
    max-width: 30%;
    font-size: 0.78rem;
    color: var(--fs-text-muted);
    text-align: right;
}

.fs-badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.14rem 0.55rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    font-size: 0.72rem;
    color: var(--fs-text-muted);
}

.fs-badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.85);
}

.fs-modal-preview {
    min-height: 260px;
    max-height: 70vh;
    padding: 1rem;
    border-radius: var(--fs-card-radius-lg);
    background: var(--fs-surface);
    border: 1px solid var(--fs-border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
}

.fs-modal-preview img,
.fs-modal-preview video,
.fs-modal-preview audio,
.fs-modal-preview iframe {
    max-width: 100%;
    max-height: 100%;
}

.fs-modal-meta {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.fs-modal-meta-section h6 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--fs-text);
    margin-bottom: 0.5rem;
}

.fs-meta-list {
    margin: 0;
    padding: 0;
}

.fs-meta-list div {
    margin-bottom: 0.25rem;
}

.fs-meta-list dt {
    font-size: 0.75rem;
    color: var(--fs-text-muted);
}

.fs-meta-list dd {
    margin: 0;
    font-size: 0.86rem;
    color: var(--fs-text);
}

.fs-modal-path {
    font-size: 0.8rem;
    color: var(--fs-text-muted);
    word-break: break-all;
}

.fs-upload-folder-tree {
    max-height: 260px;
    overflow: auto;
    border: 1px solid var(--fs-border-color);
    border-radius: var(--fs-card-radius);
    padding: 0.5rem;
    background: var(--fs-surface-alt);
}

.fs-upload-folder-item {
    width: 100%;
    text-align: left;
    border: 1px solid transparent;
    background: transparent;
    color: var(--fs-text);
    border-radius: 8px;
    padding: 0.35rem 0.5rem;
    margin-bottom: 0.2rem;
    font-size: 0.86rem;
}

.fs-upload-folder-item:hover {
    background: var(--fs-hover-bg);
}

.fs-upload-folder-item.active {
    border-color: var(--primary, #6366f1);
    background: rgba(99, 102, 241, 0.18);
}

.fs-upload-folder-empty {
    font-size: 0.86rem;
    color: var(--fs-text-muted);
    margin: 0;
}

#fsModalPreview .modal-zoom-target {
    transition: transform 0.15s ease;
    will-change: transform;
}

#fsPreviewModal .content-preview-container--pannable {
    cursor: grab;
    -webkit-user-select: none;
    user-select: none;
    touch-action: none;
}

#fsPreviewModal .content-preview-container--pannable .modal-zoom-target {
    cursor: grab;
}

#fsPreviewModal .content-preview-container--panning {
    cursor: grabbing;
}

@media (max-width: 768px) {
    .fs-toolbar {
        flex-direction: column;
        align-items: flex-start;
    }

    .fs-toolbar-left {
        width: 100%;
        flex-wrap: wrap;
    }

    .fs-toolbar-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .fs-list-meta {
        display: none;
    }

    #fs-slide-modal-nav {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}