/* ============================================
   TreePOS POS - POS Layout Styles
   ============================================ */

/* ---------- POS Main Layout ---------- */
.pos-layout {
    display: flex;
    height: calc(100vh - var(--topbar-h));
    overflow: hidden;
}

/* ---------- Left Sidebar: Categories ---------- */
.pos-sidebar {
    width: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    background: var(--white);
    border-right: 1px solid var(--border-light);
    flex-shrink: 0;
    overflow: hidden;
}

/* Parent categories - colored blocks stacked */
.cat-padre-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: var(--space-xs);
    flex-shrink: 0;
    overflow-y: auto;
    max-height: 45%;
}

.cat-padre-btn {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    min-height: 52px;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-btn);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-inverse);
    cursor: pointer;
    transition: var(--transition);
    border: 3px solid transparent;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    user-select: none;
    text-align: left;
    width: 100%;
}

.cat-padre-btn:hover {
    filter: brightness(1.1);
    transform: translateX(2px);
}

.cat-padre-btn:active {
    transform: scale(0.98);
}

.cat-padre-btn.active {
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.15), inset 0 0 0 1px rgba(255, 255, 255, 0.3);
}

.cat-padre-btn .cat-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.cat-padre-btn .cat-name {
    flex: 1;
    line-height: 1.2;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Parent category colors */
.cat-padre-btn.color-red { background: #E53935; }
.cat-padre-btn.color-yellow { background: #FDD835; color: #333; text-shadow: none; }
.cat-padre-btn.color-green { background: #43A047; }
.cat-padre-btn.color-blue { background: #1E88E5; }
.cat-padre-btn.color-purple { background: #8E24AA; }
.cat-padre-btn.color-orange { background: #FB8C00; }
.cat-padre-btn.color-teal { background: #00897B; }
.cat-padre-btn.color-pink { background: #D81B60; }

/* Divider between padre and figlio */
.cat-divider {
    height: 1px;
    background: var(--border-light);
    margin: var(--space-xs) 0;
    flex-shrink: 0;
}

/* Child categories - scrollable list */
.cat-figlio-wrap {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-xs);
}

.cat-figlio-header {
    padding: var(--space-sm) var(--space-md);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-light);
}

.cat-figlio-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.cat-figlio-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-height: 44px;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-btn);
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    width: 100%;
    text-align: left;
    user-select: none;
}

.cat-figlio-btn:hover {
    background: var(--bg);
}

.cat-figlio-btn.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
    border-color: var(--primary);
}

.cat-figlio-btn .figlio-count {
    margin-left: auto;
    font-size: 11px;
    color: var(--text-light);
    background: var(--bg);
    padding: 2px 8px;
    border-radius: var(--radius-pill);
}

.cat-figlio-btn.active .figlio-count {
    background: var(--primary);
    color: var(--text-inverse);
}

/* ---------- Center: Product Grid ---------- */
.pos-center {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg);
}

.pos-center-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--white);
    border-bottom: 1px solid var(--border-light);
    flex-shrink: 0;
}

.pos-search {
    flex: 1;
    max-width: 320px;
}

.pos-center-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.pos-pagination {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-left: auto;
}

.pos-pagination-info {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0 var(--space-sm);
}

/* Product grid */
.articoli-grid-wrap {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-md);
}

.articoli-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--space-sm);
    align-content: start;
}

/* Product card */
.art-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 100px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.art-card:hover {
    box-shadow: var(--card-shadow-hover);
    transform: translateY(-2px);
    border-color: var(--primary-light);
}

.art-card:active {
    box-shadow: var(--card-shadow-active);
    transform: translateY(0) scale(0.97);
    border-color: var(--primary);
}

.art-card.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.art-card .art-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.3;
    flex: 1;
    display: flex;
    align-items: center;
    word-break: break-word;
    margin-bottom: var(--space-xs);
}

.art-card .art-price {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
    margin-top: auto;
}

.art-card .art-cat-indicator {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
}

.art-card .art-badge {
    position: absolute;
    top: var(--space-xs);
    right: var(--space-xs);
}

/* Product card tap ripple effect */
.art-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(26, 158, 218, 0.15) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 150ms ease;
}

.art-card:active::after {
    opacity: 1;
}

/* ---------- Right Panel: Receipt ---------- */
.pos-receipt {
    width: var(--receipt-w);
    background: var(--white);
    border-left: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow: hidden;
}

.receipt-header {
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.receipt-header .receipt-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
}

.receipt-header .receipt-number {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.receipt-header .receipt-clear-btn {
    color: var(--danger);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.receipt-header .receipt-clear-btn:hover {
    background: #FFEBEE;
}

/* Receipt items list */
.receipt-items {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

.receipt-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-fast);
    min-height: 48px;
}

.receipt-item:hover {
    background: rgba(0, 0, 0, 0.02);
}

.receipt-item .item-qty {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
}

.receipt-item .qty-value {
    min-width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.receipt-item .qty-value:hover {
    background: var(--primary);
    color: var(--text-inverse);
}

.receipt-item .item-name {
    flex: 1;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.receipt-item .item-extras {
    font-size: 11px;
    color: var(--text-secondary);
    font-style: italic;
}

.receipt-item .item-price {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    flex-shrink: 0;
    min-width: 60px;
    text-align: right;
}

.receipt-item .item-remove {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    border-radius: 50%;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
    opacity: 0;
}

.receipt-item:hover .item-remove {
    opacity: 1;
}

.receipt-item .item-remove:hover {
    background: #FFEBEE;
    color: var(--danger);
}

/* Receipt empty state */
.receipt-empty {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    padding: var(--space-xl);
    text-align: center;
}

.receipt-empty .icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
    opacity: 0.3;
}

.receipt-empty p {
    font-size: 14px;
    color: var(--text-light);
}

/* Receipt footer with totals and actions */
.receipt-footer {
    border-top: 2px solid var(--border);
    flex-shrink: 0;
    background: var(--white);
}

.receipt-subtotals {
    padding: var(--space-md) var(--space-xl);
    border-bottom: 1px solid var(--border-light);
}

.receipt-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-xs) 0;
    font-size: 13px;
    color: var(--text-secondary);
}

.receipt-total-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-xl);
    background: var(--bg);
}

.receipt-total-row .total-label {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.receipt-total-row .total-amount {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

.receipt-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
}

.receipt-actions .btn {
    font-size: 14px;
    font-weight: 600;
    min-height: 48px;
}

.receipt-actions .btn-paga {
    grid-column: 1 / -1;
    background: var(--accent);
    color: var(--text-inverse);
    font-size: 18px;
    font-weight: 700;
    min-height: 56px;
    border-radius: var(--radius);
}

.receipt-actions .btn-paga:hover {
    background: var(--accent-dark);
}

.receipt-actions .btn-paga:disabled {
    background: var(--border);
    color: var(--text-light);
}

/* ---------- Quantity Popup ---------- */
.qty-popup-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qty-popup {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
    padding: var(--space-xl);
    min-width: 280px;
    z-index: var(--z-modal);
    animation: scaleIn 200ms ease;
}

.qty-popup h4 {
    text-align: center;
    margin-bottom: var(--space-lg);
    font-size: 16px;
}

.qty-popup .qty-display {
    text-align: center;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
    padding: var(--space-md);
    background: var(--bg);
    border-radius: var(--radius-btn);
    margin-bottom: var(--space-lg);
    font-variant-numeric: tabular-nums;
}

.qty-popup .qty-numpad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

.qty-popup .qty-numpad button {
    min-height: 52px;
    font-size: 20px;
    font-weight: 600;
    border-radius: var(--radius-btn);
    background: var(--bg);
    color: var(--text);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.qty-popup .qty-numpad button:hover {
    background: var(--border);
}

.qty-popup .qty-numpad button:active {
    transform: scale(0.95);
}

.qty-popup .qty-numpad button.confirm {
    background: var(--primary);
    color: var(--text-inverse);
}

.qty-popup .qty-numpad button.cancel {
    background: var(--danger);
    color: var(--text-inverse);
}

.qty-popup .qty-actions {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.qty-popup .qty-actions .btn {
    flex: 1;
    min-height: 48px;
}

/* ---------- POS Topbar Specific ---------- */
.pos-topbar {
    height: var(--topbar-h);
    background: var(--white);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    padding: 0 var(--space-lg);
    gap: var(--space-md);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    z-index: var(--z-sticky);
    flex-shrink: 0;
}

.pos-topbar .postazione-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.pos-topbar .postazione-name .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
}

/* ---------- Fullscreen Mode ---------- */
.pos-fullscreen {
    position: fixed;
    inset: 0;
    z-index: 999;
}

.pos-fullscreen .pos-topbar {
    height: 48px;
}

/* ---------- Tablet Adjustments ---------- */
@media (max-width: 1200px) {
    .pos-sidebar {
        width: 220px;
    }
    .pos-receipt {
        width: 300px;
    }
    .articoli-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}

/* ---------- Multiplier Bar ---------- */
.multiplier-bar {
    display: flex;
    gap: 4px;
    padding: 4px 16px 8px;
    flex-shrink: 0;
}

.mult-btn {
    flex: 1;
    min-height: 36px;
    font-size: 15px;
    font-weight: 700;
    border: 2px solid var(--border);
    border-radius: var(--radius-btn);
    background: var(--white);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.mult-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.mult-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--text-inverse);
}

/* Hide 1x when it's the only active (default state) */
.mult-btn.active:first-child:last-of-type {
    background: var(--bg);
}

/* ---------- Variant Badge on Article Card ---------- */
.art-var-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    font-size: 9px;
    font-weight: 800;
    color: #fff;
    background: #9C27B0;
    padding: 1px 5px;
    border-radius: 4px;
    letter-spacing: 0.5px;
}

.art-card.art-variabile {
    position: relative;
    border-color: #E1BEE7;
}

/* ---------- Variant Selection Dialog ---------- */
.variant-selection {
    max-height: 60vh;
    overflow-y: auto;
}

.variant-header {
    padding: 8px 0 16px;
    font-size: 16px;
}

.variant-group {
    margin-bottom: 16px;
    background: var(--bg);
    border-radius: var(--radius);
    padding: 12px 16px;
}

.variant-group-title {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
}

.variant-options {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.variant-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--white);
    border-radius: var(--radius-btn);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

.variant-option:hover {
    background: var(--primary-light);
}

.variant-option input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.variant-label {
    flex: 1;
}

/* ---------- Preconto Pay Button ---------- */
.pag-pay-btn.pay-preconto {
    background: #FF6B35;
    color: #fff;
}

.pag-pay-btn.pay-preconto:hover {
    background: #E85D2C;
}

.pag-pay-btn.pay-preconto:disabled {
    background: #ccc;
    color: #999;
}

@media (max-width: 960px) {
    .pos-sidebar {
        width: 180px;
    }
    .pos-receipt {
        width: 280px;
    }
    .cat-padre-btn {
        min-height: 44px;
        font-size: 12px;
        padding: var(--space-sm) var(--space-md);
    }
    .multiplier-bar {
        padding: 4px 8px;
    }
    .mult-btn {
        min-height: 30px;
        font-size: 13px;
    }
}

/* ---------- Grid Size Classes ---------- */
.art-card.size-2x1, .art-card[data-size="2x1"] { grid-column: span 2; }
.art-card.size-1x2, .art-card[data-size="1x2"] { grid-row: span 2; min-height: 208px; }
.art-card.size-2x2, .art-card[data-size="2x2"] { grid-column: span 2; grid-row: span 2; min-height: 208px; }

/* ---------- Edit Mode & Drag States (Articles) ---------- */
.edit-mode .art-card {
    cursor: grab;
    animation: editWiggle 0.4s ease-in-out infinite alternate;
    border-color: rgba(26, 158, 218, 0.25);
}
.edit-mode .art-card:nth-child(even) { animation-delay: 0.1s; }
.edit-mode .art-card:nth-child(3n) { animation-delay: 0.2s; }
.edit-mode .art-card:active { cursor: grabbing; }
.edit-mode .art-card:hover { transform: none; }

@keyframes editWiggle {
    0% { transform: rotate(-0.5deg); }
    100% { transform: rotate(0.5deg); }
}

.art-card.dragging {
    opacity: 0.25;
    transform: scale(0.96) !important;
    border: 2px dashed var(--primary) !important;
    animation: none !important;
}

.art-card.drop-target {
    background: var(--primary-light) !important;
    border: 2px solid var(--primary) !important;
    transform: scale(1.04);
    animation: none !important;
    transition: transform 150ms ease, background 150ms ease;
}

/* Resize/edit handle */
.resize-handle {
    position: absolute;
    bottom: 6px;
    right: 6px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    background: rgba(26, 158, 218, 0.1);
    border: 1.5px solid rgba(26, 158, 218, 0.3);
    border-radius: 8px;
    cursor: pointer;
    z-index: 5;
    transition: all 150ms ease;
}
.resize-handle:hover,
.resize-handle:active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: scale(1.1);
}

/* ---------- Edit Mode Top Bar ---------- */
.edit-mode-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10003;
    transform: translateY(-100%);
    transition: transform 300ms cubic-bezier(0.4, 0, 0.2, 1);
}
.edit-mode-bar.visible { transform: translateY(0); }
.edit-mode-bar-inner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    background: linear-gradient(135deg, #1A9EDA 0%, #1580B8 100%);
    color: #fff;
    font-size: 13px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}
.edit-mode-icon { font-size: 18px; }
.edit-mode-text { flex: 1; line-height: 1.3; }
.edit-mode-text b { font-size: 16px; }
.edit-done-btn {
    background: #fff !important;
    color: var(--primary) !important;
    font-weight: 700 !important;
    font-size: 14px !important;
    padding: 8px 24px !important;
    border-radius: 20px !important;
    border: none !important;
    cursor: pointer;
    white-space: nowrap;
    transition: all 150ms ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.edit-done-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

/* ---------- Edit Menu (Modal) ---------- */
.resize-menu-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0);
    z-index: 10004;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 200ms ease;
}
.resize-menu-backdrop.visible { background: rgba(0,0,0,0.35); }
.resize-menu {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    padding: 20px;
    min-width: 300px;
    max-width: 360px;
    transform: scale(0.9);
    opacity: 0;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 85vh;
    overflow-y: auto;
}
.resize-menu-backdrop.visible .resize-menu {
    transform: scale(1);
    opacity: 1;
}

.edit-menu-header {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    padding-bottom: 12px;
    margin-bottom: 4px;
    border-bottom: 1px solid var(--border-light);
    text-align: center;
}

.resize-menu-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-light);
    padding: 12px 4px 10px;
}
.resize-menu-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.resize-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 14px 10px;
    border: 2px solid var(--border-light);
    background: #fff;
    border-radius: 12px;
    cursor: pointer;
    font-size: 14px;
    transition: all 150ms ease;
    text-align: center;
}
.resize-option:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}
.resize-option.active {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(26, 158, 218, 0.15);
}
.resize-label { font-weight: 800; font-size: 18px; color: var(--text); }
.resize-desc { font-size: 12px; color: var(--text-secondary); }

/* Size preview blocks */
.resize-preview {
    display: block;
    border-radius: 4px;
    background: var(--border);
    transition: background 150ms ease;
}
.resize-option:hover .resize-preview,
.resize-option.active .resize-preview { background: var(--primary); }
.size-preview-1x1 { width: 24px; height: 24px; }
.size-preview-2x1 { width: 48px; height: 24px; }
.size-preview-1x2 { width: 24px; height: 48px; }
.size-preview-2x2 { width: 48px; height: 48px; }

/* ---------- Color Palette ---------- */
.color-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 4px 0;
}
.color-swatch {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 3px solid transparent;
    cursor: pointer;
    transition: all 150ms ease;
    position: relative;
    outline: none;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
    display: flex;
    align-items: center;
    justify-content: center;
}
.color-swatch:hover {
    transform: scale(1.15);
    box-shadow: 0 3px 8px rgba(0,0,0,0.2);
}
.color-swatch.active {
    border-color: var(--text);
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--text);
    transform: scale(1.1);
}
.color-auto-label {
    font-size: 7px;
    font-weight: 800;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
    letter-spacing: 0.5px;
}

/* ---------- Edit Mode Sidebar (Categories) ---------- */
.sidebar-edit-mode .cat-padre-btn {
    cursor: grab;
    animation: editWiggle 0.4s ease-in-out infinite alternate;
    position: relative;
}
.sidebar-edit-mode .cat-padre-btn:nth-child(even) { animation-delay: 0.15s; }
.sidebar-edit-mode .cat-padre-btn.dragging {
    opacity: 0.3;
    animation: none !important;
}
.sidebar-edit-mode .cat-padre-btn.drop-target {
    box-shadow: 0 0 0 3px var(--primary), inset 0 0 0 2px rgba(255,255,255,0.5) !important;
    animation: none !important;
    transform: scale(1.05);
}

.sidebar-edit-mode .cat-figlio-btn {
    cursor: grab;
    animation: editWiggle 0.4s ease-in-out infinite alternate;
    position: relative;
}
.sidebar-edit-mode .cat-figlio-btn:nth-child(even) { animation-delay: 0.15s; }
.sidebar-edit-mode .cat-figlio-btn.dragging {
    opacity: 0.3;
    animation: none !important;
}
.sidebar-edit-mode .cat-figlio-btn.drop-target {
    box-shadow: 0 0 0 3px var(--primary) !important;
    background: var(--primary-light) !important;
    animation: none !important;
}

/* Colored subcategories */
.cat-figlio-btn.color-red { background: #E53935 !important; color: #fff !important; }
.cat-figlio-btn.color-yellow { background: #FDD835 !important; color: #333 !important; }
.cat-figlio-btn.color-green { background: #43A047 !important; color: #fff !important; }
.cat-figlio-btn.color-blue { background: #1E88E5 !important; color: #fff !important; }
.cat-figlio-btn.color-purple { background: #8E24AA !important; color: #fff !important; }
.cat-figlio-btn.color-orange { background: #FB8C00 !important; color: #fff !important; }
.cat-figlio-btn.color-teal { background: #00897B !important; color: #fff !important; }
.cat-figlio-btn.color-pink { background: #D81B60 !important; color: #fff !important; }
.cat-figlio-btn.color-red.active,
.cat-figlio-btn.color-yellow.active,
.cat-figlio-btn.color-green.active,
.cat-figlio-btn.color-blue.active,
.cat-figlio-btn.color-purple.active,
.cat-figlio-btn.color-orange.active,
.cat-figlio-btn.color-teal.active,
.cat-figlio-btn.color-pink.active {
    font-weight: 800;
    box-shadow: inset 0 0 0 2px rgba(255,255,255,0.5);
}

/* ============================================
   MOBILE LAYOUT (< 768px) — Tab-Based
   ============================================ */

/* --- Mobile Tab Bar --- */
.mobile-tab-bar,
.mobile-total-bar {
    display: none;
}

@media (max-width: 768px) {

    /* --- Topbar compatta e fissa con safe area --- */
    .pos-topbar {
        height: 40px;
        padding: 0 8px;
        padding-top: env(safe-area-inset-top, 0px);
        gap: 4px;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        z-index: 210;
        /* Altezza totale = 40px + safe-area-inset-top */
    }
    .pos-topbar .postazione-name { font-size: 13px; }
    .pos-topbar .topbar-clock,
    .pos-topbar .topbar-item[onclick*="clearCache"],
    .pos-topbar .topbar-item[onclick*="toggleFullscreen"] {
        display: none !important;
    }
    .pos-topbar .topbar-user span:not(.topbar-user-avatar) { display: none; }
    .pos-topbar .topbar-user-avatar { width: 28px; height: 28px; font-size: 12px; }
    .pos-topbar .topbar-item { padding: 4px; font-size: 16px; }

    /* --- Main layout: below fixed topbar, use dvh for Chrome mobile --- */
    .pos-layout {
        flex-direction: column;
        position: relative;
        margin-top: calc(40px + env(safe-area-inset-top, 0px));
        height: calc(100dvh - 40px - env(safe-area-inset-top, 0px));
        height: calc(100vh - 40px - env(safe-area-inset-top, 0px));
        overflow: hidden;
    }

    @supports (height: 100dvh) {
        .pos-layout {
            height: calc(100dvh - 40px - env(safe-area-inset-top, 0px));
        }
    }

    .pos-sidebar,
    .pos-center,
    .pos-receipt {
        display: none;
        width: 100%;
        height: calc(100dvh - 40px - 108px - env(safe-area-inset-top, 0px));
        height: calc(100vh - 40px - 108px - env(safe-area-inset-top, 0px));
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        border: none;
        overflow-y: auto;
        flex-shrink: 0;
    }

    @supports (height: 100dvh) {
        .pos-sidebar,
        .pos-center,
        .pos-receipt {
            height: calc(100dvh - 40px - 108px - env(safe-area-inset-top, 0px));
        }
    }

    .pos-sidebar.mobile-active,
    .pos-center.mobile-active,
    .pos-receipt.mobile-active {
        display: flex;
    }

    /* --- Sidebar mobile: horizontal categories --- */
    .pos-sidebar.mobile-active {
        flex-direction: column;
        overflow-y: auto;
    }

    .cat-padre-list {
        flex-direction: row;
        flex-wrap: wrap;
        max-height: none;
        overflow: visible;
        gap: 4px;
        padding: 8px;
    }

    .cat-padre-btn {
        flex: 0 0 auto;
        min-height: 40px;
        font-size: 13px;
        padding: 6px 14px;
        width: auto;
    }
    .cat-padre-btn .cat-icon { width: 22px; height: 22px; font-size: 14px; }
    .cat-padre-btn:hover { transform: none; }

    .cat-divider { margin: 4px 0; }

    .cat-figlio-wrap { padding: 4px 8px; }
    .cat-figlio-btn { min-height: 40px; font-size: 13px; padding: 6px 12px; }

    /* --- Center: products grid --- */
    .pos-center.mobile-active {
        flex-direction: column;
    }

    .pos-center-header {
        padding: 6px 8px;
        gap: 6px;
    }
    .pos-center-title { font-size: 13px; }
    .pos-search { max-width: none; flex: 1; }

    .multiplier-bar {
        padding: 4px 8px;
        flex-wrap: wrap;
        gap: 3px;
    }
    .mult-btn { min-height: 30px; font-size: 12px; padding: 0 6px; }

    .articoli-grid-wrap { padding: 6px; }
    .articoli-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 6px;
    }

    .art-card {
        min-height: 76px;
        padding: 6px;
    }
    .art-card .art-name { font-size: 11px; margin-bottom: 2px; }
    .art-card .art-price { font-size: 13px; }
    .art-card:hover { transform: none; box-shadow: var(--card-shadow); }

    /* Disable grid size overrides on mobile */
    .art-card.size-2x1, .art-card[data-size="2x1"] { grid-column: span 1; }
    .art-card.size-1x2, .art-card[data-size="1x2"] { grid-row: span 1; min-height: 76px; }
    .art-card.size-2x2, .art-card[data-size="2x2"] { grid-column: span 1; grid-row: span 1; min-height: 76px; }

    /* --- Receipt mobile --- */
    .pos-receipt.mobile-active {
        flex-direction: column;
    }
    .receipt-header { padding: 8px 12px; }
    .receipt-header .receipt-title { font-size: 14px; }
    .receipt-item { padding: 8px 12px; min-height: 40px; }
    .receipt-item .item-remove { opacity: 1; }
    .receipt-total-row { padding: 8px 12px; }
    .receipt-total-row .total-label { font-size: 15px; }
    .receipt-total-row .total-amount { font-size: 20px; }
    .receipt-actions { padding: 8px; gap: 6px; }
    .receipt-actions .btn { font-size: 13px; min-height: 42px; }
    .receipt-actions .btn-paga { font-size: 16px; min-height: 48px; }

    /* --- Mobile Total + Action Bar (fixed above tab bar) --- */
    .mobile-total-bar {
        display: flex;
        align-items: center;
        justify-content: space-between;
        position: fixed;
        bottom: calc(56px + env(safe-area-inset-bottom, 0px));
        left: 0;
        right: 0;
        height: 52px;
        padding: 0 8px;
        background: var(--white);
        border-top: 1px solid var(--border-light);
        z-index: 200;
        box-shadow: 0 -1px 4px rgba(0,0,0,0.05);
        gap: 8px;
    }

    .mobile-total-info {
        display: flex;
        flex-direction: column;
        min-width: 0;
    }

    .mobile-total-label {
        font-size: 10px;
        font-weight: 600;
        color: var(--text-secondary);
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .mobile-total-amount {
        font-size: 18px;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.1;
    }

    .mobile-action-btns {
        display: flex;
        align-items: center;
        gap: 6px;
        flex-shrink: 0;
    }

    .mobile-action-btn {
        width: 40px;
        height: 40px;
        border: 1px solid var(--border);
        border-radius: var(--radius-btn);
        background: var(--white);
        font-size: 18px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
        -webkit-tap-highlight-color: transparent;
    }
    .mobile-action-btn:disabled {
        opacity: 0.35;
        pointer-events: none;
    }
    .mobile-preconto-btn { border-color: #90CAF9; }
    .mobile-preconto-btn:active { background: #E3F2FD; }
    .mobile-comanda-btn { border-color: #90CAF9; background: var(--primary-light); }
    .mobile-comanda-btn:active { background: #BBDEFB; }

    .mobile-paga-btn {
        background: var(--accent);
        color: #fff;
        font-size: 14px;
        font-weight: 700;
        border: none;
        border-radius: var(--radius-btn);
        padding: 8px 16px;
        height: 40px;
        cursor: pointer;
        transition: var(--transition);
        -webkit-tap-highlight-color: transparent;
    }
    .mobile-paga-btn:disabled {
        background: var(--border);
        color: var(--text-light);
    }

    /* --- Mobile Tab Bar (fixed bottom with safe area) --- */
    .mobile-tab-bar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: calc(56px + env(safe-area-inset-bottom, 0px));
        padding-bottom: env(safe-area-inset-bottom, 0px);
        background: var(--white);
        border-top: 1px solid var(--border-light);
        z-index: 200;
        box-shadow: 0 -2px 10px rgba(0,0,0,0.08);
    }

    .mobile-tab {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        font-size: 10px;
        font-weight: 500;
        color: var(--text-light);
        background: transparent;
        border: none;
        cursor: pointer;
        position: relative;
        gap: 2px;
        transition: color 150ms ease;
        -webkit-tap-highlight-color: transparent;
    }

    .mobile-tab .tab-icon { font-size: 20px; line-height: 1; }
    .mobile-tab .tab-label { line-height: 1; }

    .mobile-tab.active {
        color: var(--primary);
        font-weight: 700;
    }

    .tab-badge {
        position: absolute;
        top: 4px;
        right: calc(50% - 22px);
        background: var(--danger);
        color: #fff;
        font-size: 10px;
        font-weight: 700;
        min-width: 18px;
        height: 18px;
        border-radius: 9px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 0 4px;
        line-height: 1;
    }

    /* --- Pagination mobile --- */
    .pos-pagination { display: none; }

    /* --- Variant dialog mobile --- */
    .variant-selection { max-height: 50vh; }

    /* --- Quantity popup mobile --- */
    .qty-popup { min-width: 240px; padding: 16px; }
    .qty-popup .qty-display { font-size: 28px; }
    .qty-popup .qty-numpad button { min-height: 44px; font-size: 18px; }

    /* --- Edit mode bar mobile --- */
    .edit-mode-bar-inner { padding: 8px 12px; font-size: 12px; }
    .edit-done-btn { font-size: 12px !important; padding: 6px 16px !important; }

    /* --- Hide manual price button on mobile (save space) --- */
    .pos-center-header button[onclick*="prezzoManuale"] { display: none; }

} /* end @media max-width: 768px */