/* ===========================================
   POS++ Screen Designer Styles
   Visual grid-based editor for POS screens
   =========================================== */

/* ===== Loading & Error States ===== */
.loading-container,
.error-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: 16px;
    color: var(--text-secondary);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

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

.error-container h2 {
    margin: 0;
    color: var(--text-primary);
}

.error-container p {
    margin: 0;
    color: var(--text-secondary);
}

/* ===== Container Layout ===== */
.screen-designer-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 80px);
    overflow: hidden;
}

.screen-designer-container .page-header {
    flex-shrink: 0;
}

.page-header-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    margin-bottom: 4px;
}

.breadcrumb-link {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb-link:hover {
    text-decoration: underline;
}

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

.page-header h1 {
    display: flex;
    align-items: center;
    gap: 10px;
}

.page-header h1 i {
    font-size: 0.9em;
}

/* ===== Designer Layout (3-column) ===== */
.designer-layout {
    display: grid;
    grid-template-columns: 260px 1fr 280px;
    gap: 16px;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

/* ===== Toolbox Panel ===== */
.toolbox-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.toolbox-section {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.toolbox-section:last-child {
    border-bottom: none;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

.toolbox-section h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 12px 0;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.toolbox-section h3 svg {
    color: var(--text-muted);
}

.toolbox-search {
    margin-bottom: 12px;
}

.toolbox-search input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 13px;
}

.toolbox-search input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.toolbox-items {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.menu-items-list {
    flex: 1;
    overflow-y: auto;
}

.toolbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: grab;
    transition: all 0.15s ease;
}

.toolbox-item:hover {
    border-color: var(--primary-color);
    background: var(--bg-tertiary);
    transform: translateX(2px);
}

.toolbox-item:active {
    cursor: grabbing;
}

.toolbox-item .item-emoji {
    font-size: 18px;
}

.toolbox-item .item-color {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    flex-shrink: 0;
}

.toolbox-item .item-color-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.toolbox-item .item-icon {
    color: var(--text-muted);
    font-weight: bold;
}

.toolbox-item .item-label {
    flex: 1;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.toolbox-item .item-price {
    font-size: 12px;
    color: var(--text-muted);
}

.toolbox-empty {
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* ===== Grid Canvas ===== */
.grid-canvas-container {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.grid-info {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    font-size: 13px;
}

.grid-size {
    font-weight: 600;
    color: var(--text-primary);
}

.items-count {
    color: var(--text-secondary);
}

.unsaved-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--warning-color, #f59e0b);
    margin-left: auto;
}

.unsaved-indicator svg {
    fill: currentColor;
}

.grid-canvas {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(var(--grid-cols, 4), 1fr);
    grid-template-rows: repeat(var(--grid-rows, 3), 1fr);
    gap: 8px;
    padding: 16px;
    overflow: auto;
    min-height: 400px;
    position: relative;
}

.grid-cell {
    position: relative;
    background: var(--bg-secondary);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
}

.grid-cell.occupied {
    pointer-events: none;
    background: transparent;
    border: none;
}

.grid-cell:not(.occupied):hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
    cursor: pointer;
}

.grid-cell.drop-target {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.15);
    border-style: solid;
}

.cell-coords {
    font-size: 10px;
    color: var(--text-muted);
    opacity: 0.5;
}

/* ===== Placed Screen Items ===== */
.screen-item {
    position: relative;
    background: var(--primary-color);
    color: white;
    border-radius: 10px;
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.15s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 1;
}

.screen-item:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.screen-item.selected {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    z-index: 10;
}

.screen-item.type-category {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.screen-item.type-menuitem {
    background: linear-gradient(135deg, #10b981, #059669);
}

.screen-item.type-subcategory {
    background: linear-gradient(135deg, #8b5cf6, #a855f7);
}

.screen-item.type-divider {
    background: var(--bg-tertiary);
    border: 2px dashed var(--border-color);
}

.screen-item.type-spacer {
    background: transparent;
    border: 2px dashed var(--border-color);
}

/* Apply custom color */
.screen-item[style*="--item-color"] {
    background: var(--item-color) !important;
}

.item-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    text-align: center;
    pointer-events: none;
}

.item-content .item-emoji {
    font-size: 24px;
}

.item-content .item-name {
    font-size: 13px;
    font-weight: 600;
    line-height: 1.2;
}

.item-content .item-price {
    font-size: 12px;
    opacity: 0.85;
}

.divider-line {
    width: 80%;
    height: 2px;
    background: var(--border-color);
}

.spacer-icon {
    font-size: 24px;
    color: var(--text-muted);
}

/* Item Actions (when selected) */
.screen-designer-container .item-actions {
    position: absolute;
    top: -8px;
    right: -8px;
    display: flex;
    gap: 4px;
}

.item-action-btn {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: none;
    background: var(--bg-card);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: all 0.15s ease;
}

.item-action-btn:hover {
    background: var(--primary-color);
    color: white;
}

.item-action-btn.danger:hover {
    background: var(--danger-color, #ef4444);
}

/* ===== Properties Panel ===== */
.properties-panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    overflow-y: auto;
}

.properties-panel h3 {
    margin: 0 0 16px 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.property-group {
    margin-bottom: 16px;
}

.property-group label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.property-group input[type="text"],
.property-group input[type="number"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
}

.property-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.property-value {
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
}

.property-value.type-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.property-value.type-category {
    background: rgba(99, 102, 241, 0.15);
    color: #6366f1;
}

.property-value.type-menuitem {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
}

.property-value.type-divider,
.property-value.type-spacer {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.color-input-group {
    display: flex;
    gap: 8px;
    align-items: center;
}

.color-input-group input[type="color"] {
    width: 40px;
    height: 36px;
    padding: 2px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-secondary);
    cursor: pointer;
}

.color-input-group input[type="text"] {
    flex: 1;
}

.clear-color-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
}

.clear-color-btn:hover {
    background: var(--danger-color, #ef4444);
    color: white;
}

.position-inputs {
    display: flex;
    gap: 12px;
}

.input-with-label {
    flex: 1;
}

.input-with-label span {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.input-with-label input {
    width: 100%;
}

.property-actions {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.no-selection {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.no-selection svg {
    margin-bottom: 16px;
    opacity: 0.3;
}

.no-selection p {
    margin: 0 0 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.no-selection .hint {
    font-size: 12px;
    color: var(--text-muted);
}

/* ===== Add Item Modal ===== */
.add-item-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: 8px;
}

.add-item-tabs button {
    flex: 1;
    padding: 10px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.add-item-tabs button:hover {
    color: var(--text-primary);
}

.add-item-tabs button.active {
    background: var(--bg-card);
    color: var(--primary-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.add-item-search {
    margin-bottom: 12px;
}

.add-item-search input {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
}

.add-item-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 300px;
    overflow-y: auto;
}

.add-item-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.add-item-option:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.add-item-option .item-emoji {
    font-size: 18px;
}

.add-item-option .item-color {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    flex-shrink: 0;
}

.add-item-option span:not(.item-emoji):not(.item-price):not(.visual-icon):not(.item-color) {
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.add-item-option .item-price {
    font-size: 13px;
    color: var(--text-muted);
}

.add-item-option .visual-icon {
    font-size: 18px;
    color: var(--text-muted);
}

.visual-options .add-item-option {
    padding: 16px;
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
    .designer-layout {
        grid-template-columns: 220px 1fr 240px;
    }
}

@media (max-width: 992px) {
    .designer-layout {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr auto;
    }
    
    .toolbox-panel {
        flex-direction: row;
        overflow-x: auto;
    }
    
    .toolbox-section {
        min-width: 200px;
        border-bottom: none;
        border-right: 1px solid var(--border-color);
    }
    
    .toolbox-section:last-child {
        border-right: none;
    }
    
    .properties-panel {
        order: 3;
    }
}

@media (max-width: 768px) {
    .screen-designer-container {
        height: auto;
    }
    
    .designer-layout {
        gap: 12px;
    }
    
    .page-header-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .page-header-actions .btn {
        width: 100%;
    }
}