.product-customizer-modal-overlay {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 999999 !important;
    background: rgba(15, 23, 42, 0.8) !important;
    backdrop-filter: blur(6px);
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
    padding: 16px;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

.product-customizer-modal-content {
    max-width: 1320px !important;
    width: 100% !important;
    max-height: 92vh !important;
    display: flex !important;
    flex-direction: column !important;
    background: #ffffff !important;
    border-radius: 16px !important;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.3) !important;
    overflow: hidden !important;
    margin: auto !important;
}

.pc-modal-body-wrapper {
    flex: 1 1 auto !important;
    overflow-y: auto !important;
    display: flex !important;
    flex-direction: column !important;
}

.pc-modal-body-row {
    flex: 1 1 auto !important;
    display: flex !important;
    flex-wrap: wrap !important;
    margin: 0 !important;
}

.pc-canvas-col {
    overflow-y: auto !important;
    max-height: calc(92vh - 75px) !important;
    display: flex !important;
    flex-direction: column !important;
}

.pc-options-col {
    overflow-y: auto !important;
    max-height: calc(92vh - 75px) !important;
    display: flex !important;
    flex-direction: column !important;
}

/* Scope Bar (Outside / Inside) */
.pc-scope-container {
    background: #f8fafc;
    padding: 8px 16px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.pc-scope-pill {
    padding: 6px 16px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 6px;
    border: 1px solid #cbd5e1;
    background: #fff;
    color: #475569;
    cursor: pointer;
    transition: all 0.2s;
}
.pc-scope-pill.active {
    background: #0f172a;
    color: #fff;
    border-color: #0f172a;
}

/* Side Navigation Pills Matching U-Pack */
.pc-sides-container {
    background: #ffffff;
    padding: 12px 18px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    gap: 10px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.pc-side-pill {
    background: #ffffff;
    color: #475569;
    border: 1px solid #cbd5e1;
    border-radius: 9999px;
    padding: 7px 22px;
    font-size: 11.5px;
    font-weight: 700;
    letter-spacing: 0.6px;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    outline: none;
    box-shadow: none;
}

.pc-side-pill:hover {
    background: #f8fafc;
    border-color: #94a3b8;
    color: #0f172a;
}

.pc-side-pill.active {
    background: #18181b !important;
    border-color: #18181b !important;
    color: #ffffff !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.18);
}

/* Quantity Presets */
.pc-qty-tier-btn {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 6px 10px;
    background: #ffffff;
    color: #1e293b;
    font-weight: 600;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    flex: 1 1 auto;
}
.pc-qty-tier-btn.active, .pc-qty-tier-btn:hover {
    background: #f1f5f9;
    border-color: #0f172a;
}
.pc-qty-tier-btn.active {
    background: #0f172a;
    color: #ffffff;
    border-color: #0f172a;
}
.pc-qty-tier-btn.active .pc-save-badge {
    background: #22c55e !important;
    color: #fff !important;
}

/* Color Swatches */
.pc-color-swatch-btn {
    border: 1.5px solid #cbd5e1 !important;
    background: #ffffff !important;
    border-radius: 8px !important;
    padding: 7px 12px !important;
    cursor: pointer !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 8px !important;
    transition: all 0.15s ease-in-out !important;
    user-select: none !important;
    position: relative !important;
    outline: none !important;
}
.pc-color-swatch-btn:hover {
    border-color: #64748b !important;
    background: #f8fafc !important;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06) !important;
}
.pc-color-swatch-btn.active,
.pc-color-swatch-btn:has(input:checked) {
    border-color: #0f172a !important;
    background-color: #f1f5f9 !important;
    box-shadow: 0 0 0 2px #0f172a !important;
}
.pc-swatch-color-dot {
    width: 22px !important;
    height: 22px !important;
    border-radius: 50% !important;
    border: 1.5px solid rgba(0, 0, 0, 0.15) !important;
    flex-shrink: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.12) !important;
    position: relative !important;
}
.pc-swatch-check {
    display: none !important;
    width: 12px !important;
    height: 12px !important;
    stroke-width: 3 !important;
}
.pc-color-swatch-btn.active .pc-swatch-check,
.pc-color-swatch-btn:has(input:checked) .pc-swatch-check {
    display: block !important;
}
.pc-option-card {
    border: 1.5px solid #e2e8f0 !important;
    border-radius: 10px !important;
    padding: 12px 16px !important;
    cursor: pointer !important;
    background: #ffffff !important;
    transition: all 0.15s ease-in-out !important;
    user-select: none !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
}
.pc-option-card:hover {
    border-color: #cbd5e1 !important;
    background: #f8fafc !important;
}
.pc-option-card.active,
.pc-option-card:has(input:checked) {
    border-color: #0f172a !important;
    background-color: #f1f5f9 !important;
    box-shadow: 0 0 0 2px #0f172a !important;
}
.pc-visually-hidden {
    position: absolute !important;
    opacity: 0 !important;
    width: 1px !important;
    height: 1px !important;
    margin: -1px !important;
    padding: 0 !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    border: 0 !important;
    pointer-events: none !important;
}

/* 3D Studio & Mode Switcher */
.pc-mode-switcher-bar {
    border-bottom: 1px solid #e2e8f0;
}
.pc-view-mode-btn {
    transition: all 0.2s ease;
    border: none !important;
}
.pc-view-mode-btn.active {
    background: #0f172a !important;
    color: #ffffff !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}
.pc-live-indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #22c55e;
    display: inline-block;
    box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.25);
    animation: pcPulse 2s infinite;
}
@keyframes pcPulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

/* 3D Viewport */
#pc_3d_workspace {
    min-height: 520px;
    height: 100%;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.pc-3d-hint-badge {
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 15;
    background: rgba(15, 23, 42, 0.78);
    backdrop-filter: blur(4px);
    color: #ffffff;
    font-size: 11px;
    font-weight: 500;
    padding: 5px 14px;
    border-radius: 20px;
    pointer-events: none;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
#pc_three_canvas_wrapper {
    width: 100%;
    flex: 1 1 auto;
    min-height: 460px;
    height: 100%;
    cursor: grab;
    position: relative;
}
#pc_three_canvas_wrapper:active {
    cursor: grabbing;
}



/* Studio Mode Switcher Bar & Separated Buttons */
.pc-mode-switcher-bar {
    background: #ffffff;
}

#pc_view_mode_group {
    display: inline-flex !important;
    align-items: center !important;
    gap: 10px !important;
}

.pc-view-mode-btn {
    border-radius: 8px !important;
    padding: 6px 14px !important;
    font-size: 12.5px !important;
    font-weight: 600 !important;
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
}

.pc-view-mode-btn.active {
    background-color: #0f172a !important;
    color: #ffffff !important;
    border: 1px solid #0f172a !important;
    box-shadow: 0 2px 4px rgba(15, 23, 42, 0.15) !important;
}

.pc-view-mode-btn:not(.active) {
    background-color: #f8fafc !important;
    color: #334155 !important;
    border: 1px solid #cbd5e1 !important;
}

.pc-view-mode-btn:not(.active):hover {
    background-color: #e2e8f0 !important;
    color: #0f172a !important;
    border-color: #94a3b8 !important;
}

/* Product Color & Material Badge */
.pc-color-badge {
    display: inline-flex !important;
    align-items: center !important;
    background: #f8fafc !important;
    color: #1e293b !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: 6px !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}
.pc-color-dot {
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
}

/* Dimensions & Diameter Toggle Button */
#pc_btn_toggle_dimensions.active,
#pc_3d_btn_toggle_dimensions.active {
    background-color: #e0e7ff !important;
    color: #3730a3 !important;
    border-color: #c7d2fe !important;
    font-weight: 600 !important;
}
#pc_btn_toggle_dimensions:not(.active),
#pc_3d_btn_toggle_dimensions:not(.active) {
    background-color: #ffffff !important;
    color: #64748b !important;
    border-color: #cbd5e1 !important;
    opacity: 0.85;
}

/* Dimensions & Diameter SVG Overlay */
.pc-dimensions-overlay {
    transition: opacity 0.2s ease-in-out;
}
.pc-dimensions-overlay.d-none {
    display: none !important;
}

/* SVG Dimension Elements */
.pc-dim-line {
    stroke: #2563eb;
    stroke-width: 1.5;
    stroke-dasharray: 4, 3;
    shape-rendering: geometricPrecision;
}
.pc-dim-solid {
    stroke: #2563eb;
    stroke-width: 1.8;
    shape-rendering: geometricPrecision;
}
.pc-dim-marker {
    fill: #2563eb;
}
.pc-dim-guide {
    stroke: rgba(37, 99, 235, 0.35);
    stroke-width: 1;
    stroke-dasharray: 3, 3;
}
.pc-dim-pill-bg {
    fill: #1e293b;
    rx: 5;
    ry: 5;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.18));
}
.pc-dim-pill-text {
    fill: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 11px;
    font-weight: 700;
    text-anchor: middle;
    dominant-baseline: central;
}
.pc-dim-circle-guide {
    fill: none;
    stroke: #2563eb;
    stroke-width: 1.5;
    stroke-dasharray: 5, 4;
}

/* 3D Auto-Spin Pill in Sides Navigation Bar */
#pc_3d_btn_auto_rotate {
    border-radius: 9999px !important;
    font-size: 11.5px !important;
    font-weight: 700 !important;
    letter-spacing: 0.5px !important;
    padding: 7px 18px !important;
    transition: all 0.2s ease-in-out !important;
    white-space: nowrap !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    border: 1px solid #0d9488 !important;
    background-color: #0d9488 !important;
    color: #ffffff !important;
    box-shadow: 0 2px 5px rgba(13, 148, 136, 0.25) !important;
}

#pc_3d_btn_auto_rotate svg {
    margin-right: 2px !important;
    flex-shrink: 0 !important;
    stroke: currentColor !important;
}

#pc_3d_btn_auto_rotate:hover {
    background-color: #0f766e !important;
    border-color: #0f766e !important;
    color: #ffffff !important;
    box-shadow: 0 3px 8px rgba(13, 148, 136, 0.35) !important;
}

#pc_3d_btn_auto_rotate.active {
    background-color: #115e59 !important;
    border-color: #115e59 !important;
    color: #ffffff !important;
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.45) !important;
}

/* ==========================================================================
   2D Studio & 3D Studio Toolbars & Button Arrangement
   ========================================================================== */

#pc_toolbar,
#pc_3d_toolbar,
#pc_image_formatting_bar,
#pc_3d_image_formatting_bar {
    white-space: nowrap !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    -webkit-overflow-scrolling: touch !important;
    scrollbar-width: none !important;
    -ms-overflow-style: none !important;
}

#pc_toolbar::-webkit-scrollbar,
#pc_3d_toolbar::-webkit-scrollbar,
#pc_image_formatting_bar::-webkit-scrollbar,
#pc_3d_image_formatting_bar::-webkit-scrollbar {
    display: none !important;
    height: 0 !important;
    width: 0 !important;
}

/* Action Toolbar Styling (2D & 3D) */
#pc_toolbar,
#pc_3d_toolbar {
    min-height: 44px !important;
    padding: 6px 14px !important;
    background: #ffffff !important;
}

.pc-3d-main-btn {
    height: 32px !important;
    padding: 0 14px !important;
    font-size: 12px !important;
    font-weight: 600 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px !important;
    border-radius: 6px !important;
    flex-shrink: 0 !important;
    white-space: nowrap !important;
    transition: all 0.15s ease-in-out !important;
    background-color: #0d9488 !important;
    border-color: #0d9488 !important;
    color: #ffffff !important;
}

.pc-3d-main-btn:hover {
    background-color: #0f766e !important;
    border-color: #0f766e !important;
    color: #ffffff !important;
    box-shadow: 0 2px 6px rgba(13, 148, 136, 0.25) !important;
}

.pc-3d-icon-btn {
    width: 32px !important;
    height: 32px !important;
    padding: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 6px !important;
    flex-shrink: 0 !important;
    background: #ffffff !important;
    border: 1px solid #cbd5e1 !important;
    color: #475569 !important;
    transition: all 0.15s ease-in-out !important;
}

.pc-3d-icon-btn:hover {
    background: #f1f5f9 !important;
    color: #0f172a !important;
    border-color: #94a3b8 !important;
}

#pc_3d_btn_delete_object.pc-3d-icon-btn {
    border-color: #fecaca !important;
    color: #ef4444 !important;
    background: #ffffff !important;
}

#pc_3d_btn_delete_object.pc-3d-icon-btn:hover {
    background: #ef4444 !important;
    color: #ffffff !important;
    border-color: #dc2626 !important;
}

.pc-3d-zoom-group {
    height: 32px !important;
    display: inline-flex !important;
    align-items: stretch !important;
    flex-shrink: 0 !important;
    border-radius: 6px !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03) !important;
}

.pc-3d-zoom-group .btn,
.pc-3d-zoom-group span {
    height: 32px !important;
    padding: 0 9px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 11.5px !important;
    background: #ffffff !important;
    border-color: #cbd5e1 !important;
    color: #334155 !important;
}

.pc-3d-zoom-group .btn:hover {
    background: #f8fafc !important;
    color: #0f172a !important;
}

.pc-3d-dim-btn {
    height: 32px !important;
    padding: 0 12px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 7px !important;
    border-radius: 6px !important;
    flex-shrink: 0 !important;
}

.pc-3d-dim-btn svg {
    margin-right: 6px !important;
    flex-shrink: 0 !important;
}

.pc-3d-dropdown-btn {
    height: 32px !important;
    padding: 0 10px !important;
    font-size: 11.5px !important;
    font-weight: 500 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 5px !important;
    border-radius: 6px !important;
    background: #ffffff !important;
    border: 1px solid #cbd5e1 !important;
    color: #334155 !important;
    flex-shrink: 0 !important;
}

.pc-3d-dropdown-btn svg {
    margin-right: 5px !important;
    flex-shrink: 0 !important;
}

.pc-3d-dropdown-btn:hover {
    background: #f1f5f9 !important;
    color: #0f172a !important;
}

/* Image Adjustments Toolbar (2D & 3D) */
#pc_image_formatting_bar,
#pc_3d_image_formatting_bar {
    background: #f8fafc !important;
    border-bottom: 1px solid #e2e8f0 !important;
    border-top: 1px solid #edf2f7 !important;
    min-height: 40px !important;
    max-height: 40px !important;
    padding: 4px 14px !important;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02) !important;
}

.pc-3d-bar-label {
    font-size: 10.5px !important;
    letter-spacing: 0.5px !important;
    color: #64748b !important;
    margin-right: 2px !important;
    font-weight: 700 !important;
}

.pc-3d-adjust-btn {
    height: 30px !important;
    padding: 0 8px !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 4.5px !important;
    border-radius: 6px !important;
    background: #ffffff !important;
    border: 1px solid #cbd5e1 !important;
    color: #334155 !important;
    transition: all 0.15s ease-in-out !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04) !important;
}

.pc-3d-adjust-btn:hover {
    background: #f0fdfa !important;
    border-color: #0d9488 !important;
    color: #0f766e !important;
    box-shadow: 0 2px 4px rgba(13, 148, 136, 0.12) !important;
}

.pc-3d-btn-group {
    height: 30px !important;
    display: inline-flex !important;
    align-items: stretch !important;
    flex-shrink: 0 !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04) !important;
    border-radius: 6px !important;
}

.pc-3d-group-btn {
    height: 30px !important;
    padding: 0 7px !important;
    font-size: 11px !important;
    font-weight: 600 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: #ffffff !important;
    border: 1px solid #cbd5e1 !important;
    color: #334155 !important;
    border-radius: 0 !important;
    transition: all 0.15s ease-in-out !important;
}

.pc-3d-btn-group .pc-3d-group-btn:not(:first-child) {
    margin-left: -1px !important;
}

.pc-3d-btn-group .pc-3d-group-btn:first-child {
    border-top-left-radius: 6px !important;
    border-bottom-left-radius: 6px !important;
}

.pc-3d-btn-group .pc-3d-group-btn:last-child {
    border-top-right-radius: 6px !important;
    border-bottom-right-radius: 6px !important;
}

.pc-3d-group-btn:hover {
    background: #f0fdfa !important;
    border-color: #0d9488 !important;
    color: #0f766e !important;
    z-index: 2 !important;
}

.pc-3d-edit2d-btn {
    height: 30px !important;
    padding: 0 10px !important;
    font-size: 11px !important;
    font-weight: 700 !important;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 5px !important;
    border-radius: 6px !important;
    background: #0f172a !important;
    border: 1px solid #0f172a !important;
    color: #ffffff !important;
    transition: all 0.15s ease-in-out !important;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.15) !important;
}

.pc-3d-edit2d-btn:hover {
    background: #334155 !important;
    border-color: #334155 !important;
    color: #ffffff !important;
}

/* ==========================================================================
   Responsive Design & Mobile Optimization
   ========================================================================== */

/* Universal Mobile Scrollbar Hiding for sleek horizontal carousels */
.pc-sides-container::-webkit-scrollbar,
.pc-toolbar-controls::-webkit-scrollbar,
.pc-formatting-controls::-webkit-scrollbar {
    display: none !important;
    height: 0 !important;
    width: 0 !important;
}
.pc-sides-container,
.pc-toolbar-controls,
.pc-formatting-controls {
    scrollbar-width: none !important;
    -ms-overflow-style: none !important;
}

/* Toolbar Controls & Dropdowns (Ensure never clipped) */
.pc-toolbar-controls {
    overflow: visible !important;
    position: relative;
    z-index: 40;
}

.pc-toolbar-controls .dropdown {
    position: relative;
}

.pc-toolbar-controls .dropdown-menu {
    z-index: 1060 !important;
    min-width: 180px;
    border-radius: 8px !important;
    border: 1px solid rgba(0, 0, 0, 0.12) !important;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1) !important;
}

.pc-toolbar-controls .dropdown-menu .dropdown-item {
    font-size: 12.5px;
    padding: 8px 14px;
    transition: background-color 0.15s ease-in-out;
}

.pc-toolbar-controls .dropdown-menu .dropdown-item:hover {
    background-color: #f8fafc;
}

/* Tablets and Mobile Screens (<= 991.98px) */
@media (max-width: 991.98px) {
    .product-customizer-modal-overlay {
        padding: 0 !important;
        align-items: stretch !important;
        justify-content: stretch !important;
    }

    .product-customizer-modal-content {
        width: 100vw !important;
        max-width: 100vw !important;
        height: 100vh !important;
        max-height: 100vh !important;
        border-radius: 0 !important;
        margin: 0 !important;
        display: flex !important;
        flex-direction: column !important;
    }

    /* Sticky Modal Header */
    .product-customizer-modal-content > .border-bottom:first-child {
        padding: 10px 14px !important;
        flex-shrink: 0 !important;
        position: sticky !important;
        top: 0 !important;
        z-index: 60 !important;
        background: #ffffff !important;
    }

    /* Modal Body Container */
    .pc-modal-body-wrapper {
        flex: 1 1 auto !important;
        overflow-y: auto !important;
        -webkit-overflow-scrolling: touch !important;
        display: block !important;
    }

    .pc-modal-body-row {
        flex-direction: column !important;
        flex-wrap: nowrap !important;
        margin: 0 !important;
    }

    .pc-canvas-col {
        width: 100% !important;
        max-width: 100% !important;
        max-height: none !important;
        overflow: visible !important;
        flex: 0 0 auto !important;
        border-right: none !important;
        border-bottom: 2px solid #e2e8f0 !important;
    }

    .pc-options-col {
        width: 100% !important;
        max-width: 100% !important;
        max-height: none !important;
        overflow: visible !important;
        flex: 1 0 auto !important;
    }

    /* Mode Switcher Bar (2D vs 3D) */
    .pc-mode-switcher-bar {
        padding: 8px 12px !important;
        flex-wrap: wrap !important;
        gap: 8px !important;
    }
    #pc_view_mode_group {
        width: 100% !important;
        display: flex !important;
    }
    .pc-view-mode-btn {
        flex: 1 1 50% !important;
        justify-content: center !important;
        padding: 8px 12px !important;
        font-size: 12px !important;
    }

    /* Sides Navigation (Horizontal Swipe) */
    .pc-sides-container {
        padding: 8px 12px !important;
        gap: 8px !important;
        overflow-x: auto !important;
        flex-wrap: nowrap !important;
        -webkit-overflow-scrolling: touch !important;
    }
    .pc-side-pill {
        padding: 6px 14px !important;
        font-size: 11px !important;
        flex-shrink: 0 !important;
    }

    /* Toolbars (Add Text, Upload, Rotate, Zoom, etc.) */
    .pc-toolbar-controls {
        padding: 8px 12px !important;
        gap: 6px !important;
        overflow-x: auto !important;
        flex-wrap: nowrap !important;
        -webkit-overflow-scrolling: touch !important;
    }
    .pc-toolbar-controls .btn,
    .pc-toolbar-controls label.btn {
        flex-shrink: 0 !important;
        white-space: nowrap !important;
    }
    .pc-toolbar-controls .vr {
        margin: 0 2px !important;
        flex-shrink: 0 !important;
    }

    /* Formatting Bars */
    .pc-formatting-controls {
        padding: 8px 12px !important;
        gap: 8px !important;
        overflow-x: auto !important;
        flex-wrap: nowrap !important;
        -webkit-overflow-scrolling: touch !important;
    }
    .pc-formatting-controls .btn,
    .pc-formatting-controls select,
    .pc-formatting-controls input {
        flex-shrink: 0 !important;
    }

    /* 2D Interactive Canvas Area */
    .pc-canvas-area {
        padding: 12px 8px !important;
        min-height: 280px !important;
    }
    #pc_canvas_wrapper {
        max-width: 100% !important;
        box-sizing: content-box !important;
    }

    /* 3D Viewport */
    #pc_3d_workspace {
        min-height: 320px !important;
        height: 44vh !important;
        max-height: 420px !important;
    }
    #pc_three_canvas_wrapper {
        min-height: 280px !important;
        height: 100% !important;
    }

    /* Options Panel & Form Content */
    .pc-options-col > .p-4 {
        padding: 16px !important;
    }

    /* Volume Tiers Grid */
    .pc-qty-tier-container {
        display: grid !important;
        grid-template-columns: repeat(auto-fill, minmax(85px, 1fr)) !important;
        gap: 8px !important;
    }
    .pc-qty-tier-btn {
        padding: 8px 6px !important;
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
    }

    /* Sticky Bottom Summary & CTA Bar */
    .pc-sticky-bottom-summary {
        position: sticky !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        z-index: 50 !important;
        background: #ffffff !important;
        border-top: 1px solid #e2e8f0 !important;
        box-shadow: 0 -4px 16px rgba(15, 23, 42, 0.1) !important;
        padding: 12px 16px !important;
        margin-top: auto !important;
    }
    .pc-sticky-bottom-summary .btn-lg {
        padding: 12px 18px !important;
        font-size: 15px !important;
    }
}

/* Smartphone Specific (<= 575.98px) */
@media (max-width: 575.98px) {
    .product-customizer-modal-content h5 {
        font-size: 15px !important;
    }
    .pc-color-badge {
        font-size: 11px !important;
        padding: 3px 8px !important;
    }
    .pc-color-swatch-btn {
        padding: 6px 10px !important;
        font-size: 12px !important;
    }
    .pc-option-card {
        padding: 10px 12px !important;
        font-size: 13px !important;
    }
    .style-stepper {
        max-width: 100% !important;
    }
    #pc_btn_cta_text {
        font-size: 14px !important;
        letter-spacing: 0.5px !important;
    }
}

/* ========================================================
   2D Studio Canvas 3D Flip Transitions
   ======================================================== */
.pc-canvas-area {
    perspective: 1400px !important;
    perspective-origin: 50% 50% !important;
}

#pc_canvas_wrapper {
    transform-style: preserve-3d;
    backface-visibility: hidden;
    will-change: transform, opacity, box-shadow;
}

.pc-flip-animating {
    pointer-events: none !important;
}

/* Horizontal Next (Turns left, enters from right) */
#pc_canvas_wrapper.pc-flip-out-left {
    transform: perspective(1400px) rotateY(-90deg) scale(0.92) !important;
    opacity: 0.15 !important;
    box-shadow: -20px 20px 30px rgba(15, 23, 42, 0.15) !important;
    transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.15s ease, box-shadow 0.15s ease !important;
}
#pc_canvas_wrapper.pc-flip-in-right-prep {
    transform: perspective(1400px) rotateY(90deg) scale(0.92) !important;
    opacity: 0.15 !important;
    box-shadow: 20px 20px 30px rgba(15, 23, 42, 0.15) !important;
    transition: none !important;
}

/* Horizontal Prev (Turns right, enters from left) */
#pc_canvas_wrapper.pc-flip-out-right {
    transform: perspective(1400px) rotateY(90deg) scale(0.92) !important;
    opacity: 0.15 !important;
    box-shadow: 20px 20px 30px rgba(15, 23, 42, 0.15) !important;
    transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.15s ease, box-shadow 0.15s ease !important;
}
#pc_canvas_wrapper.pc-flip-in-left-prep {
    transform: perspective(1400px) rotateY(-90deg) scale(0.92) !important;
    opacity: 0.15 !important;
    box-shadow: -20px 20px 30px rgba(15, 23, 42, 0.15) !important;
    transition: none !important;
}

/* Vertical Up (Tilts up/backwards, enters from bottom) */
#pc_canvas_wrapper.pc-flip-out-up {
    transform: perspective(1400px) rotateX(90deg) scale(0.92) !important;
    opacity: 0.15 !important;
    box-shadow: 0 -20px 30px rgba(15, 23, 42, 0.15) !important;
    transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.15s ease, box-shadow 0.15s ease !important;
}
#pc_canvas_wrapper.pc-flip-in-down-prep {
    transform: perspective(1400px) rotateX(-90deg) scale(0.92) !important;
    opacity: 0.15 !important;
    box-shadow: 0 20px 30px rgba(15, 23, 42, 0.15) !important;
    transition: none !important;
}

/* Vertical Down (Tilts down/forward, enters from top) */
#pc_canvas_wrapper.pc-flip-out-down {
    transform: perspective(1400px) rotateX(-90deg) scale(0.92) !important;
    opacity: 0.15 !important;
    box-shadow: 0 20px 30px rgba(15, 23, 42, 0.15) !important;
    transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.15s ease, box-shadow 0.15s ease !important;
}
#pc_canvas_wrapper.pc-flip-in-up-prep {
    transform: perspective(1400px) rotateX(90deg) scale(0.92) !important;
    opacity: 0.15 !important;
    box-shadow: 0 -20px 30px rgba(15, 23, 42, 0.15) !important;
    transition: none !important;
}

/* Smooth Landing finish */
#pc_canvas_wrapper.pc-flip-in-finish {
    transform: perspective(1400px) rotateY(0deg) rotateX(0deg) scale(1) !important;
    opacity: 1 !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06) !important;
    transition: transform 0.18s cubic-bezier(0.15, 0.85, 0.35, 1), opacity 0.18s ease, box-shadow 0.18s ease !important;
}