/* ─────────────────────────────────────────────────────────────────────────
   WooCommerce Product Kit Builder — Frontend Styles
   Dark luxury theme  ·  3-column accordion + canvas + toolbar layout
───────────────────────────────────────────────────────────────────────── */

:root {
    --pkb-bg:            #0e0e0e;
    --pkb-bg-panel:      #1a1a1a;
    --pkb-bg-card:       #222222;
    --pkb-bg-card-hover: #2c2c2c;
    --pkb-border:        rgba(255,255,255,.08);
    --pkb-gold:          #c9a84c;
    --pkb-gold-light:    #e0c97a;
    --pkb-gold-dim:      rgba(201,168,76,.18);
    --pkb-text:          #e8e0d0;
    --pkb-text-dim:      #888070;
    --pkb-text-muted:    #555048;
    --pkb-red:           #cc4444;
    --pkb-green:         #4caf50;
    --pkb-radius:        6px;
    --pkb-steps-w:       300px;
    --pkb-toolbar-w:     88px;
    --pkb-carousel-h:    148px;
    --pkb-transition:    .18s ease;
}

/* ── Outer shell ──────────────────────────────────────────────────────── */

.pkb-builder {
    background: var(--pkb-bg);
    color: var(--pkb-text);
    font-family: inherit;
    border-radius: 0;
    overflow: hidden;
    box-shadow: 0 4px 32px rgba(0,0,0,.55);
}

.pkb-product-title {
    padding: 16px 20px 14px;
    border-bottom: 1px solid var(--pkb-border);
    background: var(--pkb-bg-panel);
}

.pkb-product-title__text {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--pkb-text);
    letter-spacing: .01em;
    line-height: 1.3;
}

.pkb-layout {
    display: grid;
    grid-template-columns: var(--pkb-steps-w) 1fr var(--pkb-toolbar-w);
    grid-template-rows: 1fr;
    height: clamp(520px, 75vh, 820px);
}

/* ═══════════════════════════════════════════════════════════════════════
   LEFT  — step accordion panel
═══════════════════════════════════════════════════════════════════════ */

.pkb-steps-panel {
    grid-column: 1;
    display: flex;
    flex-direction: column;
    background: var(--pkb-bg-panel);
    border-right: 1px solid var(--pkb-border);
    overflow: hidden;
    min-height: 0;
}

/* Header */
.pkb-steps-header {
    padding: 18px 20px 14px;
    border-bottom: 1px solid var(--pkb-border);
    flex-shrink: 0;
}

.pkb-steps-heading {
    display: block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--pkb-gold);
}

/* Accordion list */
.pkb-accordion {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--pkb-border) transparent;
}

.pkb-accordion::-webkit-scrollbar { width: 4px; }
.pkb-accordion::-webkit-scrollbar-thumb { background: var(--pkb-border); border-radius: 4px; }

/* Step row */
.pkb-step {
    border-bottom: 1px solid var(--pkb-border);
}

.pkb-step-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    color: var(--pkb-text-dim);
    transition: background var(--pkb-transition), color var(--pkb-transition);
}

.pkb-step-trigger:hover,
.pkb-step--active .pkb-step-trigger {
    background: rgba(255,255,255,.04);
    color: var(--pkb-text);
}

.pkb-step-num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--pkb-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    transition: background var(--pkb-transition), border-color var(--pkb-transition), color var(--pkb-transition);
}

.pkb-step--active .pkb-step-num {
    background: var(--pkb-gold);
    border-color: var(--pkb-gold);
    color: #000;
}

.pkb-step--done .pkb-step-num {
    background: var(--pkb-green);
    border-color: var(--pkb-green);
    color: #fff;
}

/* Mandatory section — "Required" pill after the step label */
.pkb-step--mandatory .pkb-step-label::after {
    content: 'Required';
    display: inline-block;
    margin-left: 6px;
    padding: 1px 5px;
    font-size: 9px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    border-radius: 3px;
    background: rgba(200,160,70,.18);
    color: var(--pkb-gold);
    vertical-align: middle;
    line-height: 1.6;
}

/* Error state — mandatory section still empty when add-to-cart attempted */
.pkb-step--error .pkb-step-num {
    background: #c0392b;
    border-color: #c0392b;
    color: #fff;
}
.pkb-step--error .pkb-step-trigger {
    background: rgba(192,57,43,.08);
}
.pkb-step--error .pkb-step-label::after {
    content: 'Selection required';
    background: rgba(192,57,43,.15);
    color: #e74c3c;
}

.pkb-step-labels {
    flex: 1;
    min-width: 0;
}

.pkb-step-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pkb-step-sublabel {
    display: block;
    font-size: 11px;
    color: var(--pkb-text-dim);
    margin-top: 1px;
}

.pkb-step-tick {
    font-size: 13px;
    color: var(--pkb-green);
    opacity: 0;
    transition: opacity var(--pkb-transition);
}

.pkb-step--done .pkb-step-tick { opacity: 1; }

.pkb-step-arrow {
    display: none;
}

/* Step body (collapsible) */
.pkb-step-body {
    display: none;
    padding: 4px 16px 14px;
}

.pkb-step--active .pkb-step-body { display: block; }

.pkb-step-hint {
    font-size: 11px;
    color: var(--pkb-text-muted);
    margin: 0 0 10px;
}

/* Component card grid embedded inside each step body */
.pkb-step-components {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
    max-height: 380px;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--pkb-border) transparent;
}

.pkb-step-components::-webkit-scrollbar { width: 4px; }
.pkb-step-components::-webkit-scrollbar-thumb { background: var(--pkb-border); border-radius: 4px; }

.pkb-step-components .pkb-component-card {
    flex: 0 0 calc(50% - 4px);
    width: calc(50% - 4px);
    height: 158px;
}

.pkb-no-selection {
    font-size: 11px;
    color: var(--pkb-text-muted);
    margin: 0;
    font-style: italic;
}

.pkb-selection-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--pkb-bg-card);
    border: 1px solid var(--pkb-border);
    border-radius: 20px;
    padding: 3px 4px 3px 9px;
    font-size: 11px;
    cursor: pointer;
    transition: border-color var(--pkb-transition), background var(--pkb-transition);
    max-width: 140px;
    user-select: none;
}

.pkb-selection-tag:hover {
    border-color: rgba(201,168,76,.4);
    background: var(--pkb-bg-card-hover);
}

/* Highlighted when the corresponding canvas layer is selected */
.pkb-selection-tag--active {
    border-color: var(--pkb-gold);
    background: var(--pkb-gold-dim);
    color: var(--pkb-gold-light);
}

.pkb-selection-tag-name {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 90px;
}

.pkb-selection-tag-remove {
    flex-shrink: 0;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--pkb-text-muted);
    font-size: 13px;
    line-height: 1;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--pkb-transition), color var(--pkb-transition);
    padding: 0;
}

.pkb-selection-tag-remove:hover {
    background: rgba(204,68,68,.2);
    color: var(--pkb-red);
}

/* ═══════════════════════════════════════════════════════════════════════
   DEDICATED ADDED-COMPONENTS PANEL
═══════════════════════════════════════════════════════════════════════ */

.pkb-selections-panel {
    flex-shrink: 0;
    border-top: 1px solid var(--pkb-border);
    background: var(--pkb-bg-panel);
    display: flex;
    flex-direction: column;
    height: 148px;
}

.pkb-selections-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px 6px;
    flex-shrink: 0;
    border-bottom: 1px solid var(--pkb-border);
}

.pkb-selections-panel-title {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--pkb-gold);
}

.pkb-selections-panel-count {
    font-size: 11px;
    font-weight: 700;
    color: var(--pkb-text-muted);
    background: var(--pkb-bg-card);
    border: 1px solid var(--pkb-border);
    border-radius: 10px;
    padding: 0 6px;
    min-width: 18px;
    text-align: center;
    line-height: 18px;
    height: 18px;
    display: inline-block;
}

.pkb-selections-panel-list {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 8px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--pkb-border) transparent;
}

.pkb-selections-panel-list::-webkit-scrollbar { width: 4px; }
.pkb-selections-panel-list::-webkit-scrollbar-thumb { background: var(--pkb-border); border-radius: 4px; }

.pkb-selections-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.pkb-selections-group-label {
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--pkb-text-muted);
}

.pkb-selections-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

/* Price summary */
.pkb-price-summary {
    flex-shrink: 0;
    padding: 14px 16px;
    border-top: 1px solid var(--pkb-border);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.pkb-price-row {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--pkb-text-dim);
}

.pkb-price-total {
    font-size: 14px;
    color: var(--pkb-text);
    padding-top: 6px;
    border-top: 1px solid var(--pkb-border);
}

.pkb-price-total strong { color: var(--pkb-gold-light); }

/* Action buttons */
.pkb-validation-error {
    font-size: 12px;
    color: var(--pkb-red);
    padding: 0 16px 8px;
}

.pkb-btn {
    display: block;
    width: calc(100% - 32px);
    margin: 4px 16px;
    padding: 11px 16px;
    border: none;
    border-radius: var(--pkb-radius);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    transition: background var(--pkb-transition), color var(--pkb-transition), opacity var(--pkb-transition);
}

.pkb-btn:last-child { margin-bottom: 16px; }

.pkb-btn--primary {
    background: var(--pkb-gold);
    color: #000;
}

.pkb-btn--primary:hover { background: var(--pkb-gold-light); }

.pkb-btn--primary:disabled {
    opacity: .45;
    cursor: not-allowed;
}

.pkb-btn--ghost {
    background: transparent;
    color: var(--pkb-text-dim);
    border: 1px solid var(--pkb-border);
}

.pkb-btn--ghost:hover {
    background: rgba(255,255,255,.06);
    color: var(--pkb-text);
}

/* ═══════════════════════════════════════════════════════════════════════
   CENTRE  — canvas stage + carousel
═══════════════════════════════════════════════════════════════════════ */

.pkb-stage {
    grid-column: 2;
    display: flex;
    flex-direction: row;
    background: var(--pkb-bg);
    overflow: hidden;
    min-width: 0;
    min-height: 0;
}

/* ── Component picker panel (lives inside .pkb-stage, left of canvas) ─── */

.pkb-picker-panel {
    flex-shrink: 0;
    width: 240px;
    background: var(--pkb-bg-panel);
    border-right: 1px solid var(--pkb-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-height: 0;
}

.pkb-picker-header {
    flex-shrink: 0;
    padding: 12px 14px 10px;
    border-bottom: 1px solid var(--pkb-border);
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.pkb-picker-section-name {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--pkb-gold);
    line-height: 1.2;
}

.pkb-picker-hint {
    font-size: 10px;
    color: var(--pkb-text-muted);
    line-height: 1.3;
}

.pkb-picker-grid {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 10px;
    scrollbar-width: thin;
    scrollbar-color: var(--pkb-border) transparent;
}

.pkb-picker-grid::-webkit-scrollbar { width: 4px; }
.pkb-picker-grid::-webkit-scrollbar-thumb { background: var(--pkb-border); border-radius: 4px; }

.pkb-picker-section {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-content: flex-start;
}

.pkb-picker-section .pkb-component-card {
    flex: 0 0 calc(50% - 4px);
    width: calc(50% - 4px);
    height: 158px;
}

/* ── Canvas column (canvas + added-components panel) ───────────────────── */

.pkb-canvas-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    overflow: hidden;
}

/* ── Canvas ─────────────────────────────────────────────────────────────── */

/* Canvas */
.pkb-canvas-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    overflow: hidden;
    position: relative;
}

.pkb-canvas-ratio {
    position: relative;
    width: 100%;
    max-width: min(100%, 560px);
    margin: 0 auto;
    /* aspect-ratio set inline from canvas dimensions — always relative to own width */
}

.pkb-canvas-inner {
    position: absolute;
    inset: 0;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: 0 0 0 1px var(--pkb-border), 0 8px 40px rgba(0,0,0,.6);
    /* Explicit size matches parent so drag/resize pixel→% conversion is exact */
    width: 100%;
    height: 100%;
}

.pkb-base-layer {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
}

.pkb-layers-container {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

/* Grid overlay */
.pkb-canvas-inner--grid::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 900;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.07) 1px, transparent 1px);
    background-size: 10% 10%;
}

/* Individual layer elements */
.pkb-layer {
    position: absolute;
    cursor: move;
    box-sizing: border-box;
    user-select: none;
    transition: outline var(--pkb-transition);
}

.pkb-layer img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    pointer-events: none;
}

.pkb-layer--selected {
    outline: 2px solid var(--pkb-gold);
    outline-offset: 2px;
}

.pkb-layer--locked {
    cursor: default;
}

.pkb-layer--locked::after {
    content: '';
    position: absolute;
    top: 4px;
    right: 4px;
    width: 14px;
    height: 14px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23c9a84c' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='11' width='18' height='11' rx='2' ry='2'%3E%3C/rect%3E%3Cpath d='M7 11V7a5 5 0 0 1 10 0v4'%3E%3C/path%3E%3C/svg%3E") center/contain no-repeat;
    opacity: .75;
    pointer-events: none;
}

.pkb-layer-resize {
    position: absolute;
    bottom: -4px;
    right: -4px;
    width: 10px;
    height: 10px;
    background: var(--pkb-gold);
    border-radius: 2px;
    cursor: se-resize;
}

/* Carousel */
.pkb-carousel-area {
    flex-shrink: 0;
    height: var(--pkb-carousel-h);
    display: flex;
    align-items: center;
    background: var(--pkb-bg-panel);
    border-top: 1px solid var(--pkb-border);
    position: relative;
    overflow: hidden;
}

.pkb-carousel-track-wrap {
    flex: 1;
    overflow: hidden;
    height: 100%;
}

.pkb-carousel-track {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    height: 100%;
    transition: transform .28s cubic-bezier(.4,0,.2,1);
    will-change: transform;
}

/* Carousel arrows */
.pkb-carousel-arrow {
    flex-shrink: 0;
    width: 32px;
    height: 100%;
    background: var(--pkb-bg-panel);
    border: none;
    border-radius: 0;
    color: var(--pkb-text-dim);
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
    transition: background var(--pkb-transition), color var(--pkb-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.pkb-carousel-arrow:hover { background: rgba(255,255,255,.06); color: var(--pkb-gold); }
.pkb-carousel-arrow:disabled { opacity: .25; cursor: default; }

/* Component cards (in carousel) */
.pkb-component-card {
    flex-shrink: 0;
    width: 104px;
    height: 124px;
    background: var(--pkb-bg-card);
    border: 1px solid var(--pkb-border);
    border-radius: var(--pkb-radius);
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: border-color var(--pkb-transition), transform var(--pkb-transition), opacity var(--pkb-transition);
}

.pkb-component-card:hover {
    border-color: var(--pkb-gold);
    transform: translateY(-2px);
}

.pkb-component-card--active {
    border-color: var(--pkb-gold);
    background: var(--pkb-bg-card-hover);
}

.pkb-component-card--excluded {
    opacity: .32;
    pointer-events: none;
    cursor: not-allowed;
}

/* Card thumbnail */
.pkb-card-thumb {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: #181818;
}

.pkb-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.pkb-card-no-img {
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        45deg,
        #222 0px, #222 4px,
        #1a1a1a 4px, #1a1a1a 8px
    );
}

.pkb-card-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,.45);
    opacity: 0;
    transition: opacity var(--pkb-transition);
}

.pkb-component-card:hover .pkb-card-overlay { opacity: 1; }
.pkb-component-card--active .pkb-card-overlay { opacity: 1; background: rgba(201,168,76,.22); }

.pkb-card-add-icon {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--pkb-gold);
    color: #000;
    font-size: 20px;
    font-weight: 700;
    line-height: 28px;
    text-align: center;
}

/* Card info bar */
.pkb-card-info {
    flex-shrink: 0;
    padding: 5px 6px 4px;
    background: var(--pkb-bg-panel);
    border-top: 1px solid var(--pkb-border);
}

.pkb-card-name {
    display: block;
    font-size: 10px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--pkb-text);
    line-height: 1.3;
}

.pkb-card-price {
    display: block;
    font-size: 10px;
    color: var(--pkb-gold);
    font-weight: 600;
    margin-top: 1px;
}

/* Card badges */
.pkb-card-badge {
    position: absolute;
    top: 4px;
    left: 4px;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
    padding: 2px 5px;
    border-radius: 3px;
    pointer-events: none;
}

.pkb-card-badge--required {
    background: rgba(201,168,76,.22);
    color: var(--pkb-gold);
    border: 1px solid rgba(201,168,76,.3);
}

.pkb-card-badge--excluded {
    background: rgba(136,112,112,.35);
    color: #ccc;
    border: 1px solid rgba(200,120,120,.25);
}

.pkb-card-badge--count {
    top: auto;
    bottom: 30px;
    left: auto;
    right: 4px;
    background: var(--pkb-gold);
    color: #000;
    font-size: 10px;
    font-weight: 800;
    border: none;
    padding: 2px 5px;
    border-radius: 3px;
}

/* ═══════════════════════════════════════════════════════════════════════
   RIGHT  — toolbar panel
═══════════════════════════════════════════════════════════════════════ */

.pkb-toolbar-panel {
    grid-column: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 12px 0;
    background: var(--pkb-bg-panel);
    border-left: 1px solid var(--pkb-border);
    overflow: hidden;
}

.pkb-tool-btn {
    width: 64px;
    padding: 8px 4px 6px;
    background: none;
    border: none;
    border-radius: var(--pkb-radius);
    cursor: pointer;
    color: var(--pkb-text-dim);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: background var(--pkb-transition), color var(--pkb-transition);
    font-family: inherit;
}

.pkb-tool-btn:hover:not(:disabled) {
    background: rgba(255,255,255,.06);
    color: var(--pkb-gold);
}

.pkb-tool-btn:disabled {
    opacity: .28;
    cursor: not-allowed;
}

.pkb-tool-btn--active {
    color: var(--pkb-gold);
    background: var(--pkb-gold-dim);
}

.pkb-tool-btn svg {
    width: 18px;
    height: 18px;
}

.pkb-tool-btn span {
    font-size: 9px;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    line-height: 1;
}

.pkb-tool-divider {
    width: 40px;
    height: 1px;
    background: var(--pkb-border);
    margin: 4px 0;
}

/* ═══════════════════════════════════════════════════════════════════════
   ADMIN MODE
═══════════════════════════════════════════════════════════════════════ */

/* Gold outline signals admin mode is live */
.pkb-builder--admin-mode {
    outline: 2px solid var(--pkb-gold);
    outline-offset: -2px;
}

/* Amber banner below the product title */
.pkb-builder--admin-mode .pkb-product-title {
    background: #2a2000;
    border-bottom-color: rgba(201,168,76,.5);
    position: relative;
}

.pkb-builder--admin-mode .pkb-product-title::after {
    content: 'ADMIN MODE — drag & resize to set defaults, then Save';
    display: block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--pkb-gold);
    margin-top: 4px;
    opacity: .85;
}

/* Save button flash on success */
.pkb-tool-btn--saved {
    color: var(--pkb-green) !important;
    background: rgba(76,175,80,.12) !important;
}

/* ═══════════════════════════════════════════════════════════════════════
   PHOTO UPLOAD PANEL  (inside .pkb-steps-panel)
═══════════════════════════════════════════════════════════════════════ */

.pkb-upload-panel {
    display: none !important;
}

.pkb-upload-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.pkb-upload-panel-title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--pkb-gold);
}

.pkb-upload-count {
    font-size: 11px;
    color: var(--pkb-text-dim);
}

.pkb-upload-hint {
    font-size: 11px;
    color: var(--pkb-text-dim);
    margin: 0 0 10px;
    line-height: 1.4;
}

.pkb-upload-slots {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pkb-upload-slot {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    background: var(--pkb-bg-card);
    border: 1px solid var(--pkb-border);
    border-radius: var(--pkb-radius);
    min-height: 52px;
    transition: border-color var(--pkb-transition);
}

.pkb-upload-slot:hover {
    border-color: rgba(201,168,76,.3);
}

.pkb-upload-slot-label {
    font-size: 11px;
    color: var(--pkb-text-dim);
    white-space: nowrap;
    min-width: 44px;
}

.pkb-upload-trigger {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: 1px dashed rgba(201,168,76,.35);
    border-radius: 4px;
    color: var(--pkb-gold);
    font-size: 11px;
    font-weight: 600;
    padding: 5px 10px;
    cursor: pointer;
    transition: border-color var(--pkb-transition), background var(--pkb-transition);
    flex: 1;
}

.pkb-upload-trigger:hover {
    border-color: var(--pkb-gold);
    background: var(--pkb-gold-dim);
}

.pkb-upload-slot--loading .pkb-upload-trigger {
    opacity: .5;
    pointer-events: none;
}

/* Filled slot */
.pkb-upload-slot--filled {
    border-color: rgba(201,168,76,.4);
}

.pkb-upload-preview {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 3px;
    overflow: hidden;
    border: 1px solid var(--pkb-border);
    background: #111;
}

.pkb-upload-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.pkb-upload-actions {
    display: flex;
    gap: 4px;
    margin-left: auto;
}

.pkb-upload-change,
.pkb-upload-delete {
    background: none;
    border: 1px solid var(--pkb-border);
    border-radius: 3px;
    color: var(--pkb-text-dim);
    font-size: 10px;
    padding: 3px 7px;
    cursor: pointer;
    transition: border-color var(--pkb-transition), color var(--pkb-transition);
}

.pkb-upload-change:hover {
    border-color: var(--pkb-gold);
    color: var(--pkb-gold);
}

.pkb-upload-delete:hover {
    border-color: var(--pkb-red);
    color: var(--pkb-red);
}

/* ── Frame photo-slot layer ───────────────────────────────────────────
   Stacking order (bottom → top):
   1. .pkb-layer-slot-photo-wrap  — uploaded customer photo (object-fit:cover)
   2. .pkb-layer-slot-empty       — placeholder shown when no photo uploaded
   3. .pkb-layer-frame-img        — the frame PNG (transparent interior → photo shows through)
   4. .pkb-layer-resize           — resize handle
─────────────────────────────────────────────────────────────────────── */

.pkb-layer--frame-slot {
    overflow: hidden;
}

/* Unlocked frame slots are clickable — show pointer and a subtle highlight on hover */
.pkb-layer--frame-slot:not(.pkb-layer--locked) {
    cursor: pointer;
}

.pkb-layer--frame-slot:not(.pkb-layer--locked):hover .pkb-layer-slot-empty {
    background: rgba(201,168,76,.15);
    border-color: rgba(201,168,76,.6);
    color: rgba(201,168,76,.85);
}

.pkb-layer--frame-slot:not(.pkb-layer--locked):hover .pkb-layer-slot-photo-wrap {
    opacity: .85;
}

/* Layer 1 — uploaded photo (position set inline from photo area %) */
.pkb-layer--frame-slot .pkb-layer-slot-photo-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Layer 2 — empty-state hint (position set inline, hidden once photo uploaded) */
.pkb-layer--frame-slot .pkb-layer-slot-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201,168,76,.07);
    border: 1px dashed rgba(201,168,76,.3);
    color: rgba(201,168,76,.5);
    pointer-events: none;
    box-sizing: border-box;
}

/* Layer 3 — frame PNG sits on top; transparent centre reveals the photo */
.pkb-layer--frame-slot .pkb-layer-frame-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    z-index: 2;
    pointer-events: none;
}

/* Locked layer padlock indicator */
.pkb-layer--locked {
    cursor: default !important;
}

.pkb-layer--locked::after {
    content: '';
    position: absolute;
    top: 4px;
    right: 4px;
    width: 14px;
    height: 14px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23c9a84c' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='11' width='18' height='11' rx='2' ry='2'%3E%3C/rect%3E%3Cpath d='M7 11V7a5 5 0 0 1 10 0v4'%3E%3C/path%3E%3C/svg%3E") center/contain no-repeat;
    opacity: .85;
    pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════════════════
   MOBILE NAV BAR  (hidden on desktop, shown ≤ 680px)
═══════════════════════════════════════════════════════════════════════ */

.pkb-mobile-nav {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 10px 12px;
    background: var(--pkb-bg-panel);
    border-bottom: 1px solid var(--pkb-border);
    flex-shrink: 0;
}

.pkb-mobile-nav-btn {
    flex-shrink: 0;
    background: none;
    border: 1px solid var(--pkb-border);
    border-radius: var(--pkb-radius);
    color: var(--pkb-text);
    font-size: 13px;
    font-weight: 600;
    padding: 8px 14px;
    cursor: pointer;
    font-family: inherit;
    transition: background var(--pkb-transition), border-color var(--pkb-transition), color var(--pkb-transition);
    white-space: nowrap;
    min-width: 72px;
}

.pkb-mobile-nav-btn:hover:not(:disabled) {
    background: rgba(255,255,255,.06);
    border-color: var(--pkb-gold);
    color: var(--pkb-gold);
}

.pkb-mobile-nav-btn:disabled {
    opacity: .28;
    cursor: not-allowed;
}

.pkb-mobile-step-info {
    flex: 1;
    text-align: center;
    min-width: 0;
    overflow: hidden;
}

.pkb-mobile-step-count {
    display: block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--pkb-gold);
}

.pkb-mobile-step-name {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--pkb-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-top: 2px;
}

/* ═══════════════════════════════════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════════════════════════════════ */

@media (max-width: 900px) {
    :root {
        --pkb-steps-w:    260px;
        --pkb-toolbar-w:  72px;
    }
}

@media (max-width: 680px) {

    /* ── Layout: single scrollable flex column ──────────────────────── */
    .pkb-layout {
        display: flex;
        flex-direction: column;
        /* Remove the fixed desktop height so everything stacks and scrolls */
        height: auto;
        min-height: auto;
        overflow: visible;
    }

    /* Stacking order: mobile nav → stage → step panel */
    .pkb-mobile-nav    { display: flex; order: 1; }
    .pkb-stage         { order: 2; flex-direction: column; overflow: visible; }
    .pkb-steps-panel   { order: 3; overflow: visible; border-right: none; border-top: 1px solid var(--pkb-border); height: auto; }
    .pkb-toolbar-panel { display: none; }

    /* ── Canvas column: canvas then selections panel ─────────────────── */
    /* canvas-column is order 1 inside stage (default 0, before picker order 2) */
    .pkb-canvas-column {
        order: 1;
        flex-shrink: 0;
        display: flex;
        flex-direction: column;
    }

    /* Canvas wrap: natural size driven by aspect-ratio child */
    .pkb-canvas-wrap {
        order: 1;     /* explicit — must come before selections panel (order 2) */
        flex: none;
        padding: 14px 20px;
    }

    .pkb-canvas-ratio {
        max-width: min(100%, 400px);
        margin: 0 auto;
    }

    /* Selections panel below canvas, compact */
    .pkb-selections-panel {
        order: 2;
        height: auto;
        max-height: 130px;
    }

    /* ── Component picker panel ──────────────────────────────────────── */
    .pkb-picker-panel {
        order: 2;
        width: 100%;
        height: 210px;
        flex-shrink: 0;
        border-right: none;
        border-top: 1px solid var(--pkb-border);
    }

    /* Horizontal scroll on narrow screens */
    .pkb-picker-grid {
        padding: 8px;
        overflow-x: auto;
        overflow-y: hidden;
    }
    .pkb-picker-section {
        flex-wrap: nowrap;
        gap: 8px;
    }
    .pkb-picker-section .pkb-component-card {
        flex: 0 0 100px;
        width: 100px;
        height: 124px;
    }

    /* ── Step panel: simplified single-step view ─────────────────────── */
    .pkb-steps-header { display: none; }
    .pkb-accordion { flex: 0 0 auto; overflow: visible; }
    .pkb-step:not(.pkb-step--active) { display: none; }
    .pkb-step--active .pkb-step-trigger { pointer-events: none; cursor: default; }

    /* Price + buttons: always full-width, no cramping */
    .pkb-price-summary { padding: 12px 16px; }
    .pkb-btn { width: calc(100% - 32px); }
}