/* Draggable Grid Layout Styles */

.draggable-grid-layout {
    display: grid;
    gap: 1rem;
    grid-auto-rows: 100px;
    grid-auto-flow: row dense;
    position: relative;
    min-height: 400px;
}

.draggable-grid-layout.edit-mode {
    /* Vertical grid lines */
    background-image: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent calc(100% / 12 - 1px),
            rgba(var(--mud-palette-primary-rgb), 0.15) calc(100% / 12 - 1px),
            rgba(var(--mud-palette-primary-rgb), 0.15) calc(100% / 12)
        ),
        /* Horizontal grid lines */
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent calc(100px + 0.5rem - 1px),
            rgba(var(--mud-palette-primary-rgb), 0.15) calc(100px + 0.5rem - 1px),
            rgba(var(--mud-palette-primary-rgb), 0.15) calc(100px + 1rem)
        );
    background-size: 100% 100%, 100% calc(100px + 1rem);
    background-position: 0 0, 0 0;
}

/* Responsive grid columns */
.draggable-grid-layout.cols-1 {
    grid-template-columns: 1fr;
}

.draggable-grid-layout.cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.draggable-grid-layout.cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.draggable-grid-layout.cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.draggable-grid-layout.cols-6 {
    grid-template-columns: repeat(6, 1fr);
}

.draggable-grid-layout.cols-12 {
    grid-template-columns: repeat(12, 1fr);
}

/* Grid items */
.draggable-grid-item {
    position: relative;
    cursor: move;
    transition: grid-area 0.3s ease;
    overflow: hidden;
    background: var(--mud-palette-surface);
    border-radius: var(--mud-default-borderradius);
    box-shadow: var(--mud-elevation-1);
}

/* Grid placeholder for drop preview */
.grid-placeholder {
    grid-area: auto;
    background: var(--mud-palette-primary);
    opacity: 0.2;
    border-radius: var(--mud-default-borderradius);
    pointer-events: none;
    transition: all 0.2s ease;
}

.draggable-grid-item:hover {
    box-shadow: var(--mud-elevation-4);
}

/* Dragging state */
.draggable-grid-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

/* Drag placeholder */
.drag-placeholder {
    background: var(--mud-palette-primary);
    opacity: 0.1;
    border: 2px dashed var(--mud-palette-primary);
    border-radius: var(--mud-default-borderradius);
    transition: all 0.2s ease;
}

/* Grid drop indicator */
.grid-drop-indicator {
    background: var(--mud-palette-primary);
    border: 2px solid var(--mud-palette-primary);
    border-radius: var(--mud-default-borderradius);
    pointer-events: none;
    z-index: 1000;
}

/* Resize handle */
.resize-handle {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 20px;
    height: 20px;
    cursor: nwse-resize;
    opacity: 0;
    transition: opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--mud-palette-text-secondary);
}

.draggable-grid-item:hover .resize-handle {
    opacity: 0.5;
}

.resize-handle:hover {
    opacity: 1 !important;
}

/* Grid item sizes */
.grid-col-span-1 { grid-column: span 1; }
.grid-col-span-2 { grid-column: span 2; }
.grid-col-span-3 { grid-column: span 3; }
.grid-col-span-4 { grid-column: span 4; }
.grid-col-span-5 { grid-column: span 5; }
.grid-col-span-6 { grid-column: span 6; }
.grid-col-span-7 { grid-column: span 7; }
.grid-col-span-8 { grid-column: span 8; }
.grid-col-span-9 { grid-column: span 9; }
.grid-col-span-10 { grid-column: span 10; }
.grid-col-span-11 { grid-column: span 11; }
.grid-col-span-12 { grid-column: span 12; }

.grid-row-span-1 { grid-row: span 1; }
.grid-row-span-2 { grid-row: span 2; }
.grid-row-span-3 { grid-row: span 3; }
.grid-row-span-4 { grid-row: span 4; }
.grid-row-span-5 { grid-row: span 5; }
.grid-row-span-6 { grid-row: span 6; }

/* Responsive breakpoints */
@media (max-width: 960px) {
    .draggable-grid-layout {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    
    .grid-col-span-3,
    .grid-col-span-4,
    .grid-col-span-5,
    .grid-col-span-6,
    .grid-col-span-7,
    .grid-col-span-8,
    .grid-col-span-9,
    .grid-col-span-10,
    .grid-col-span-11,
    .grid-col-span-12 {
        grid-column: span 2;
    }
}

@media (max-width: 600px) {
    .draggable-grid-layout {
        grid-template-columns: 1fr !important;
    }
    
    .draggable-grid-item {
        grid-column: span 1 !important;
    }
    
    .resize-handle {
        display: none;
    }
}

/* Dark mode adjustments */
.mud-dark .draggable-grid-item {
    background: var(--mud-palette-surface);
}

.mud-dark .drag-placeholder {
    opacity: 0.2;
}