/* ===================================
   MATRIX GRID ORGANISM
   ===================================
   
   A reusable grid for property comparisons, data matrices, and any
   row/column data display with sticky headers.
   
   SPACING CONTRACT:
   - No external margins
   - Internal gaps controlled via CSS
   - Parent controls spacing between grids
   
   FEATURES:
   - Grey header row (top)
   - Grey header column (left)
   - White data cells
   - Sticky headers
   - Horizontal scroll support
   - Interactive cell hover states
*/

/* Wrapper for horizontal scroll */
.matrix-grid-wrapper {
    position: relative;
    overflow-x: auto;
    overflow-y: visible;
    margin: 0;
    
    /* Scrollbar styling */
    scrollbar-width: thin;
    scrollbar-color: var(--color-neutral-400) var(--bg-panel);
    padding-bottom: var(--space-3);
}

.matrix-grid-wrapper::-webkit-scrollbar {
    height: 8px;
    display: block;
}

.matrix-grid-wrapper::-webkit-scrollbar-track {
    background: var(--bg-panel);
    border-radius: var(--border-radius-sm);
}

.matrix-grid-wrapper::-webkit-scrollbar-thumb {
    background: var(--color-neutral-400);
    border-radius: var(--border-radius-sm);
}

.matrix-grid-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--color-neutral-500);
}

/* Grid container */
.matrix-grid {
    display: grid;
    gap: 0;
    min-width: max-content;
    grid-template-columns: var(--matrix-columns, 120px repeat(4, 1fr));
    border: var(--border-width-1) solid var(--border-default);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

/* ===================================
   HEADER CELLS (Grey background)
   =================================== */

/* Top header row cells */
.matrix-grid-header {
    background: var(--bg-panel);
    padding: var(--space-2) var(--space-3);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    border-bottom: var(--border-width-2) solid var(--border-default);
    border-right: var(--border-width-1) solid var(--border-subtle);
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 2;
}

.matrix-grid-header:last-child {
    border-right: none;
}

/* Row header cells (first column) */
.matrix-grid-row-header {
    background: var(--bg-panel);
    padding: var(--space-2) var(--space-3);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-align: left;
    border-right: var(--border-width-2) solid var(--border-default);
    border-bottom: var(--border-width-1) solid var(--border-subtle);
    position: sticky;
    left: 0;
    z-index: 1;
}

/* Corner cell (top-left) - both row and column header */
.matrix-grid-corner {
    background: var(--bg-panel);
    padding: var(--space-2) var(--space-3);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    text-align: left;
    border-right: var(--border-width-2) solid var(--border-default);
    border-bottom: var(--border-width-2) solid var(--border-default);
    position: sticky;
    top: 0;
    left: 0;
    z-index: 3;  /* Above both row and column headers */
}

/* ===================================
   DATA CELLS (White background)
   =================================== */

.matrix-grid-cell {
    background: var(--bg-surface);
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    color: var(--text-body);
    text-align: center;
    border-right: var(--border-width-1) solid var(--border-subtle);
    border-bottom: var(--border-width-1) solid var(--border-subtle);
    transition: background-color var(--duration-150) var(--easing-out);
}

.matrix-grid-cell:last-child {
    border-right: none;
}

/* Last row cells */
.matrix-grid-row:last-child .matrix-grid-cell,
.matrix-grid-row:last-child .matrix-grid-row-header {
    border-bottom: none;
}

/* Interactive cells */
.matrix-grid-cell.interactive {
    cursor: pointer;
}

.matrix-grid-cell.interactive:hover {
    background: var(--color-primary-light);
}

/* ===================================
   CELL VALUE STYLING
   =================================== */

.matrix-value {
    font-weight: var(--font-weight-semibold);
    display: inline-block;
}

/* Status variants for values */
.matrix-value.status-excellent,
.matrix-value.status-good {
    color: var(--color-success);
}

.matrix-value.status-fair {
    color: var(--color-warning);
}

.matrix-value.status-poor {
    color: var(--color-error);
}

/* Cell background status variants (for availability/booking grids) */
.matrix-grid-cell.cell-available {
    background: var(--color-success-light);
}

.matrix-grid-cell.cell-partial {
    background: var(--color-warning-light);
}

.matrix-grid-cell.cell-booked {
    background: var(--color-error-light);
}

.matrix-grid-cell.cell-blocked {
    background: var(--color-neutral-100);
    color: var(--text-muted);
}

/* ===================================
   SIZE VARIANTS
   =================================== */

/* Compact size */
.matrix-grid.matrix-grid-compact .matrix-grid-header,
.matrix-grid.matrix-grid-compact .matrix-grid-row-header,
.matrix-grid.matrix-grid-compact .matrix-grid-corner,
.matrix-grid.matrix-grid-compact .matrix-grid-cell {
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
}

/* Large size */
.matrix-grid.matrix-grid-lg .matrix-grid-header,
.matrix-grid.matrix-grid-lg .matrix-grid-row-header,
.matrix-grid.matrix-grid-lg .matrix-grid-corner,
.matrix-grid.matrix-grid-lg .matrix-grid-cell {
    padding: var(--space-3) var(--space-4);
}

/* ===================================
   RESPONSIVE
   =================================== */

@media (max-width: 768px) {
    .matrix-grid-header,
    .matrix-grid-row-header,
    .matrix-grid-corner,
    .matrix-grid-cell {
        padding: var(--space-1) var(--space-2);
        font-size: var(--text-xs);
    }
}