/* Drag and Drop Styles */

/* Document card drag states */
[data-doc-id][draggable="true"] {
    cursor: move;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

[data-doc-id][draggable="true"]:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

[data-doc-id].dragging {
    opacity: 0.8;
    transform: rotate(2deg);
    z-index: 1000;
}

[data-doc-id].drag-ghost {
    opacity: 0.5;
    transform: scale(0.95) rotate(2deg);
}

/* Folder drop zone states */
[data-folder-id] {
    transition: all 0.2s ease;
    border-radius: 0.375rem;
}

[data-folder-id].drag-over {
    background-color: var(--bs-primary-bg-subtle) !important;
    border: 2px dashed var(--bs-primary) !important;
    transform: scale(1.02);
    box-shadow: 0 0 0 3px rgba(var(--bs-primary-rgb), 0.1);
}

[data-folder-id].drop-success {
    background-color: var(--bs-success-bg-subtle) !important;
    border: 2px solid var(--bs-success) !important;
    animation: dropSuccess 0.6s ease;
}

[data-folder-id].drop-error {
    background-color: var(--bs-danger-bg-subtle) !important;
    border: 2px solid var(--bs-danger) !important;
    animation: dropError 0.8s ease;
}

/* Drop feedback animations */
@keyframes dropSuccess {
    0% { transform: scale(1.02); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes dropError {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-3px); }
    75% { transform: translateX(3px); }
}

/* Folder tree specific styles */
.folder-tree [data-folder-id] {
    padding: 0.5rem;
    margin: 0.125rem 0;
}

.folder-tree [data-folder-id].drag-over {
    margin: 0.25rem 0;
    border-radius: 0.5rem;
}

/* Document list specific styles */
.document-list [data-doc-id] {
    position: relative;
    overflow: hidden;
}

.document-list [data-doc-id]::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 49%, rgba(var(--bs-primary-rgb), 0.1) 50%, transparent 51%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.document-list [data-doc-id][draggable="true"]:hover::before {
    opacity: 1;
}

/* Drag handle indicator */
[data-doc-id][draggable="true"] .drag-handle {
    opacity: 0;
    transition: opacity 0.2s ease;
    color: var(--bs-secondary);
    cursor: move;
}

[data-doc-id][draggable="true"]:hover .drag-handle,
[data-doc-id][draggable="true"]:focus .drag-handle {
    opacity: 1;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    [data-doc-id][draggable="true"]:hover {
        transform: none;
        box-shadow: none;
    }
    
    [data-folder-id].drag-over {
        transform: none;
        box-shadow: 0 0 0 2px rgba(var(--bs-primary-rgb), 0.3);
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    [data-doc-id][draggable="true"],
    [data-folder-id],
    [data-doc-id].dragging,
    [data-doc-id].drag-ghost,
    [data-folder-id].drag-over,
    [data-folder-id].drop-success,
    [data-folder-id].drop-error {
        transition: none !important;
        animation: none !important;
        transform: none !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    [data-folder-id].drag-over {
        border-color: currentColor !important;
        background-color: highlight !important;
        color: highlighttext !important;
    }
    
    [data-folder-id].drop-success {
        border-color: green !important;
        background-color: lightgreen !important;
    }
    
    [data-folder-id].drop-error {
        border-color: red !important;
        background-color: lightcoral !important;
    }
}