.sd3d-designer,
.sd3d-designer * {
    box-sizing: border-box;
}

.sd3d-designer {
    --sd3d-border: #d8dde3;
    --sd3d-muted: #67727e;
    --sd3d-bg: #f5f7f9;
    --sd3d-panel: #ffffff;
    --sd3d-text: #1f2933;
    --sd3d-accent: #1f5d8f;
    --sd3d-danger: #a23535;
    color: var(--sd3d-text);
    font: inherit;
    width: 100%;
}

.sd3d-layout {
    display: grid;
    grid-template-columns: minmax(360px, 0.9fr) minmax(440px, 1.35fr);
    gap: 18px;
    align-items: start;
}

.sd3d-controls,
.sd3d-viewer-panel {
    min-width: 0;
}

.sd3d-section,
.sd3d-viewer-panel {
    background: var(--sd3d-panel);
    border: 1px solid var(--sd3d-border);
    border-radius: 10px;
}

.sd3d-section {
    padding: 16px;
    margin-bottom: 14px;
}

.sd3d-section:last-child {
    margin-bottom: 0;
}

.sd3d-section-heading {
    margin-bottom: 14px;
}

.sd3d-heading-row {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: flex-start;
}

.sd3d-section h2 {
    font-size: 18px;
    line-height: 1.25;
    margin: 0 0 4px;
}

.sd3d-section p,
.sd3d-viewer-title span {
    margin: 0;
    color: var(--sd3d-muted);
    font-size: 13px;
}

.sd3d-grid {
    display: grid;
    gap: 12px;
}

.sd3d-grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sd3d-designer label > span,
.sd3d-step-field > span {
    display: block;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 5px;
}

.sd3d-designer input[type="number"],
.sd3d-designer select {
    width: 100%;
    min-height: 42px;
    padding: 8px 10px;
    border: 1px solid var(--sd3d-border);
    border-radius: 6px;
    background: #fff;
    color: var(--sd3d-text);
    font: inherit;
}

.sd3d-designer input:focus,
.sd3d-designer select:focus,
.sd3d-button:focus-visible {
    outline: 2px solid var(--sd3d-accent);
    outline-offset: 2px;
}

.sd3d-step-list {
    display: grid;
    gap: 10px;
}

.sd3d-step {
    border: 1px solid var(--sd3d-border);
    border-radius: 8px;
    padding: 12px;
    background: var(--sd3d-bg);
}

.sd3d-step-head {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    align-items: center;
    margin-bottom: 10px;
}

.sd3d-step-title {
    font-weight: 700;
    font-size: 14px;
}

.sd3d-step-controls {
    display: grid;
    grid-template-columns: 1fr 1fr 1.25fr;
    gap: 9px;
}

.sd3d-step-buttons {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.sd3d-button {
    min-height: 38px;
    padding: 7px 11px;
    border: 1px solid var(--sd3d-border);
    border-radius: 6px;
    background: #fff;
    color: var(--sd3d-text);
    font: inherit;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    text-decoration: none;
}

.sd3d-button:hover {
    border-color: #aeb8c2;
}

.sd3d-button-primary {
    background: var(--sd3d-accent);
    border-color: var(--sd3d-accent);
    color: #fff;
}

.sd3d-button-danger {
    color: var(--sd3d-danger);
}

.sd3d-button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.sd3d-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.sd3d-file-button {
    position: relative;
    overflow: hidden;
}

.sd3d-file-button input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.sd3d-message {
    min-height: 20px;
    margin-top: 10px;
    font-size: 13px;
    color: var(--sd3d-muted);
}

.sd3d-message.is-error {
    color: var(--sd3d-danger);
    font-weight: 700;
}

.sd3d-profile-preview {
    border: 1px solid var(--sd3d-border);
    border-radius: 8px;
    background: #fbfcfd;
    padding: 8px;
    overflow: hidden;
}

.sd3d-profile-preview svg {
    width: 100%;
    height: auto;
    display: block;
}

.sd3d-profile-line {
    fill: none;
    stroke: #2f3e4d;
    stroke-width: 4;
    stroke-linejoin: round;
    stroke-linecap: round;
}

.sd3d-profile-back {
    stroke: #aab2ba;
    stroke-width: 2;
    stroke-dasharray: 7 6;
}

.sd3d-profile-label {
    fill: #75808a;
    font-size: 12px;
}

.sd3d-viewer-panel {
    overflow: hidden;
    position: sticky;
    top: 18px;
}

.sd3d-viewer-toolbar {
    padding: 12px 14px;
    border-bottom: 1px solid var(--sd3d-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.sd3d-viewer-title {
    min-width: 0;
    display: grid;
    gap: 2px;
}

.sd3d-view-actions {
    justify-content: flex-end;
}

.sd3d-canvas-wrap {
    position: relative;
    width: 100%;
    min-height: 720px;
    background:
        linear-gradient(#eef2f5 1px, transparent 1px),
        linear-gradient(90deg, #eef2f5 1px, transparent 1px),
        #f9fbfc;
    background-size: 28px 28px;
    transition: background-color 160ms ease;
    overflow: hidden;
    touch-action: none;
}

.sd3d-canvas-wrap[data-background="light"] {
    background:
        linear-gradient(#eef2f5 1px, transparent 1px),
        linear-gradient(90deg, #eef2f5 1px, transparent 1px),
        #f9fbfc;
    background-size: 28px 28px;
}

.sd3d-canvas-wrap[data-background="neutral"] {
    background:
        linear-gradient(rgba(255,255,255,0.13) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.13) 1px, transparent 1px),
        #aeb6bd;
    background-size: 28px 28px;
}

.sd3d-canvas-wrap[data-background="dark"] {
    background:
        linear-gradient(rgba(255,255,255,0.075) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.075) 1px, transparent 1px),
        #24292e;
    background-size: 28px 28px;
}

.sd3d-canvas-wrap[data-background="dark"] .sd3d-canvas-help {
    background: rgba(22,26,30,0.88);
    border-color: rgba(255,255,255,0.18);
    color: #e9eef2;
}

.sd3d-canvas-wrap[data-background="neutral"] .sd3d-canvas-help {
    background: rgba(255,255,255,0.84);
}

.sd3d-canvas-wrap canvas {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 720px;
    cursor: grab;
    image-rendering: auto;
    touch-action: none;
}

.sd3d-canvas-wrap canvas:active {
    cursor: grabbing;
}

.sd3d-canvas-help {
    position: absolute;
    left: 12px;
    bottom: 10px;
    background: rgba(255,255,255,0.88);
    border: 1px solid var(--sd3d-border);
    border-radius: 6px;
    padding: 6px 8px;
    font-size: 12px;
    color: var(--sd3d-muted);
    pointer-events: none;
}


.sd3d-embed-help {
    display: none;
}

.sd3d-readout {
    padding: 10px 14px 12px;
    border-top: 1px solid var(--sd3d-border);
    color: var(--sd3d-muted);
    font-size: 12px;
    line-height: 1.5;
}

@media (max-width: 980px) {
    .sd3d-layout {
        grid-template-columns: 1fr;
    }

    .sd3d-viewer-panel {
        position: static;
    }

    .sd3d-canvas-wrap,
    .sd3d-canvas-wrap canvas {
        min-height: 600px;
    }
}

@media (max-width: 620px) {
    .sd3d-grid-2,
    .sd3d-step-controls {
        grid-template-columns: 1fr;
    }

    .sd3d-heading-row,
    .sd3d-viewer-toolbar {
        align-items: stretch;
        flex-direction: column;
    }

    .sd3d-actions,
    .sd3d-view-actions {
        width: 100%;
    }

    .sd3d-actions .sd3d-button,
    .sd3d-file-button {
        flex: 1 1 140px;
    }

    .sd3d-canvas-wrap,
    .sd3d-canvas-wrap canvas {
        min-height: 460px;
    }
}

/* ==========================================================
   v0.1.6 - Smooth studio renderer appearance
   ========================================================== */

.sd3d-step-controls {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.sd3d-radius-field.is-hidden {
    visibility: hidden;
    pointer-events: none;
}

.sd3d-profile-radius-label {
    fill: #53606b;
    font-size: 11px;
    font-weight: 700;
}

.sd3d-render-controls {
    padding: 12px 14px 14px;
    border-bottom: 1px solid var(--sd3d-border);
    background: #fbfcfd;
    display: grid;
    gap: 12px;
}

.sd3d-render-group {
    min-width: 0;
}

.sd3d-render-label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--sd3d-text);
}

.sd3d-swatches {
    display: flex;
    align-items: center;
    gap: 7px;
    flex-wrap: wrap;
}

.sd3d-swatch {
    width: 34px;
    height: 34px;
    min-width: 34px;
    padding: 0;
    border-radius: 50%;
    border: 2px solid #fff;
    outline: 1px solid var(--sd3d-border);
    background: var(--swatch);
    cursor: pointer;
    position: relative;
}

.sd3d-swatch.is-selected {
    outline: 3px solid var(--sd3d-accent);
    outline-offset: 1px;
}

.sd3d-swatch:focus-visible,
.sd3d-colour-picker input:focus-visible {
    outline: 3px solid var(--sd3d-accent);
    outline-offset: 2px;
}

.sd3d-colour-picker {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 38px;
    padding: 4px 7px 4px 9px;
    border: 1px solid var(--sd3d-border);
    border-radius: 7px;
    background: #fff;
    font-size: 12px;
    font-weight: 700;
}

.sd3d-colour-picker > span {
    margin: 0 !important;
}

.sd3d-colour-picker input[type="color"] {
    width: 31px;
    height: 29px;
    padding: 1px;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.sd3d-render-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 12px;
}

.sd3d-render-grid label {
    min-width: 0;
}

.sd3d-render-grid select {
    min-height: 38px;
    width: 100%;
}

.sd3d-range-field input[type="range"] {
    width: 100%;
    accent-color: var(--sd3d-accent);
}

.sd3d-range-field output {
    float: right;
    font-variant-numeric: tabular-nums;
    color: var(--sd3d-muted);
    font-weight: 600;
}

@media (max-width: 1180px) {
    .sd3d-step-controls {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 620px) {
    .sd3d-step-controls,
    .sd3d-render-grid {
        grid-template-columns: 1fr;
    }

    .sd3d-radius-field.is-hidden {
        display: none;
    }

    .sd3d-swatch {
        width: 38px;
        height: 38px;
        min-width: 38px;
    }
}

.sd3d-step-geometry-note {
    grid-column: 1 / -1;
    padding: 8px 10px;
    border: 1px dashed var(--sd3d-border);
    border-radius: 6px;
    background: #fff;
    color: var(--sd3d-muted);
    font-size: 12px;
    line-height: 1.4;
}


/* ==========================================================
   v0.1.8 - WebGL depth-tested renderer
   ========================================================== */
.sd3d-webgl-error {
    position: absolute;
    inset: 50% auto auto 50%;
    transform: translate(-50%, -50%);
    max-width: min(420px, calc(100% - 32px));
    padding: 12px 14px;
    border: 1px solid #d9b6b6;
    border-radius: 6px;
    background: rgba(255,255,255,0.94);
    color: #813737;
    font-size: 14px;
    line-height: 1.45;
    text-align: center;
    pointer-events: none;
    z-index: 3;
}
.sd3d-webgl-error[hidden] { display: none !important; }


/* v0.2.1 Raised Island two-sided profile editor */
.sd3d-profile-group {
    display: grid;
    gap: 10px;
}

.sd3d-profile-subheading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.sd3d-profile-subheading h3 {
    margin: 0 0 3px;
    font-size: 15px;
    line-height: 1.3;
}

.sd3d-profile-subheading p,
.sd3d-channel-field p {
    margin: 0;
    color: var(--sd3d-muted);
    font-size: 12px;
}

.sd3d-island-controls {
    display: grid;
    gap: 16px;
    margin-top: 16px;
}

.sd3d-island-controls[hidden] {
    display: none !important;
}

.sd3d-channel-field {
    border: 1px solid var(--sd3d-border);
    border-radius: 8px;
    padding: 12px;
    background: #fff;
}

.sd3d-channel-field label {
    display: block;
    max-width: 220px;
    margin-bottom: 6px;
}

@media (max-width: 620px) {
    .sd3d-profile-subheading {
        align-items: stretch;
        flex-direction: column;
    }

    .sd3d-profile-subheading .sd3d-button {
        align-self: flex-start;
    }
}

/* ==========================================================
   v0.2.7 - Compact builder + preset library
   ========================================================== */
.sd3d-layout {
    grid-template-columns: minmax(430px, 0.95fr) minmax(440px, 1.4fr);
    gap: 12px;
}

.sd3d-section {
    padding: 10px;
    margin-bottom: 8px;
}

.sd3d-section-heading {
    margin-bottom: 8px;
}

.sd3d-section h2 {
    font-size: 16px;
    margin-bottom: 2px;
}

.sd3d-section p,
.sd3d-viewer-title span {
    font-size: 12px;
    line-height: 1.35;
}

.sd3d-grid {
    gap: 8px;
}

.sd3d-door-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sd3d-designer label > span,
.sd3d-step-field > span {
    font-size: 11px;
    margin-bottom: 3px;
}

.sd3d-designer input[type="number"],
.sd3d-designer input[type="text"],
.sd3d-designer select {
    min-height: 34px;
    padding: 5px 8px;
    border-radius: 5px;
    font-size: 13px;
}

.sd3d-step-list {
    gap: 6px;
}

.sd3d-step {
    padding: 8px;
    border-radius: 6px;
}

.sd3d-step-head {
    margin-bottom: 6px;
    gap: 6px;
}

.sd3d-step-title {
    font-size: 13px;
}

.sd3d-step-controls {
    gap: 6px;
}

.sd3d-step-buttons {
    gap: 4px;
}

.sd3d-button {
    min-height: 32px;
    padding: 5px 9px;
    border-radius: 5px;
    font-size: 12px;
}

.sd3d-step-geometry-note {
    padding: 5px 7px;
    font-size: 11px;
    line-height: 1.3;
}

.sd3d-profile-group {
    gap: 7px;
}

.sd3d-profile-subheading {
    gap: 8px;
}

.sd3d-profile-subheading h3 {
    font-size: 14px;
}

.sd3d-profile-subheading p,
.sd3d-channel-field p {
    font-size: 11px;
    line-height: 1.3;
}

.sd3d-island-controls {
    gap: 10px;
    margin-top: 10px;
}

.sd3d-channel-field {
    padding: 8px;
}

.sd3d-channel-field label {
    max-width: 180px;
    margin-bottom: 4px;
}

.sd3d-section-cross-section .sd3d-section-heading {
    align-items: center;
}

.sd3d-profile-preview {
    padding: 4px;
    border-radius: 6px;
}

.sd3d-section-cross-section .sd3d-profile-preview svg {
    height: 128px;
    width: 100%;
}

.sd3d-cross-status {
    color: var(--sd3d-muted);
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
}

.sd3d-preset-grid {
    display: grid;
    grid-template-columns: minmax(160px, 1.35fr) auto minmax(160px, 1fr) auto auto auto;
    gap: 6px;
    align-items: end;
}

.sd3d-preset-grid label {
    min-width: 0;
}

.sd3d-preset-message {
    min-height: 16px;
    margin-top: 5px;
    color: var(--sd3d-muted);
    font-size: 11px;
}

.sd3d-preset-message.is-error {
    color: var(--sd3d-danger);
    font-weight: 700;
}

.sd3d-viewer-toolbar {
    padding: 8px 10px;
}

.sd3d-render-controls {
    padding: 8px 10px;
}

.sd3d-render-grid {
    gap: 7px 9px;
}

.sd3d-render-grid select {
    min-height: 34px;
}

.sd3d-readout {
    padding: 7px 10px;
    font-size: 11px;
}

@media (max-width: 1280px) {
    .sd3d-preset-grid {
        grid-template-columns: minmax(160px, 1fr) auto;
    }

    .sd3d-preset-name-wrap,
    .sd3d-preset-select-wrap {
        min-width: 0;
    }

    .sd3d-door-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 980px) {
    .sd3d-layout {
        grid-template-columns: 1fr;
    }

    .sd3d-viewer-panel {
        position: static;
    }
}

@media (max-width: 620px) {
    .sd3d-door-grid,
    .sd3d-preset-grid {
        grid-template-columns: 1fr 1fr;
    }

    .sd3d-section-cross-section .sd3d-profile-preview svg {
        height: 108px;
    }

    .sd3d-cross-status {
        white-space: normal;
        text-align: right;
    }
}

/* ==========================================================
   v0.3.0 - Studio viewer / compact overlay controls
   ========================================================== */
.sd3d-viewer-panel {
    background: #fff;
}

.sd3d-viewer-toolbar {
    padding: 9px 12px;
}

.sd3d-render-controls {
    display: block;
    padding: 0;
    border-bottom: 1px solid var(--sd3d-border);
    background: #fbfcfd;
}

.sd3d-render-controls > summary {
    cursor: pointer;
    list-style: none;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 800;
    color: var(--sd3d-text);
    user-select: none;
}

.sd3d-render-controls > summary::-webkit-details-marker { display: none; }
.sd3d-render-controls > summary::after {
    content: '▾';
    float: right;
    color: var(--sd3d-muted);
}
.sd3d-render-controls:not([open]) > summary::after { content: '▸'; }

.sd3d-render-controls-body {
    padding: 8px 12px 10px;
    display: grid;
    gap: 9px;
    border-top: 1px solid var(--sd3d-border);
}

.sd3d-render-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 7px 9px;
}

.sd3d-render-grid select,
.sd3d-render-grid input[type="color"] {
    min-height: 32px;
}

.sd3d-render-label {
    margin-bottom: 4px;
    font-size: 11px;
}

.sd3d-swatch {
    width: 28px;
    height: 28px;
    min-width: 28px;
}

.sd3d-colour-picker {
    min-height: 32px;
    padding: 2px 6px 2px 8px;
}

.sd3d-colour-picker input[type="color"] {
    width: 28px;
    height: 24px;
}

.sd3d-canvas-wrap,
.sd3d-canvas-wrap[data-background="light"] {
    background: #f1f3f5;
}

.sd3d-canvas-wrap[data-background="neutral"] {
    background: #979fa7;
}

.sd3d-canvas-wrap[data-background="dark"] {
    background: #30363c;
}

.sd3d-canvas-wrap[data-background="black"] {
    background: #111416;
}

.sd3d-canvas-wrap[data-background="custom"] {
    background: var(--sd3d-custom-bg, #596168);
}

.sd3d-canvas-wrap[data-background="dark"] .sd3d-canvas-help,
.sd3d-canvas-wrap[data-background="black"] .sd3d-canvas-help,
.sd3d-canvas-wrap[data-background="custom"] .sd3d-canvas-help {
    background: rgba(20,24,28,0.82);
    border-color: rgba(255,255,255,0.16);
    color: #eef2f5;
}

.sd3d-view-overlay {
    position: absolute;
    top: 10px;
    z-index: 4;
    display: flex;
    gap: 5px;
    padding: 5px;
    border: 1px solid rgba(45,52,58,0.18);
    border-radius: 8px;
    background: rgba(255,255,255,0.88);
    box-shadow: 0 3px 14px rgba(20,28,34,0.10);
    backdrop-filter: blur(7px);
}

.sd3d-view-overlay-left { left: 10px; }
.sd3d-view-overlay-right { right: 10px; }

.sd3d-view-tool {
    appearance: none;
    border: 1px solid #d4dae0;
    border-radius: 6px;
    background: #fff;
    min-height: 30px;
    padding: 4px 8px;
    font: inherit;
    font-size: 11px;
    font-weight: 800;
    color: #30373d;
    cursor: pointer;
    white-space: nowrap;
}

.sd3d-view-tool:hover,
.sd3d-view-tool:focus-visible {
    border-color: var(--sd3d-accent);
    outline: none;
}

.sd3d-canvas-help {
    font-size: 11px;
    padding: 5px 7px;
}

@media (max-width: 780px) {
    .sd3d-render-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .sd3d-view-overlay {
        top: 8px;
    }

    .sd3d-view-overlay-right {
        top: 48px;
    }
}

@media (max-width: 520px) {
    .sd3d-render-grid {
        grid-template-columns: 1fr;
    }

    .sd3d-view-overlay {
        gap: 3px;
        padding: 4px;
    }

    .sd3d-view-tool {
        min-height: 28px;
        padding: 3px 6px;
        font-size: 10px;
    }

    .sd3d-canvas-help {
        max-width: calc(100% - 20px);
    }
}


/* v0.3.2 - compact back-side hinge drilling controls */
.sd3d-section-hinges .sd3d-section-heading { margin-bottom: 8px; }
.sd3d-hinge-grid { gap: 8px; }
.sd3d-hinge-summary {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 3px 8px;
    border-radius: 999px;
    background: #eef1f3;
    color: #39434b;
    font-size: 11px;
    font-weight: 700;
    white-space: nowrap;
}
.sd3d-hinge-detail {
    margin-top: 8px;
    padding: 7px 9px;
    border: 1px solid #e2e6e9;
    border-radius: 7px;
    background: #f7f8f9;
    color: #59636b;
    font-size: 11px;
    line-height: 1.4;
}


/* v0.3.3 Sydney Doors built-in profile templates */
.sd3d-profile-template-detail {
    grid-column: 1 / -1;
    font-size: 12px;
    line-height: 1.35;
    color: #5e6670;
    padding: 7px 9px;
    border: 1px solid #dfe3e7;
    border-radius: 7px;
    background: #f8f9fa;
}
.sd3d-built-in-profile-wrap { grid-column: span 2; }
.sd3d-root [data-manual-profile-controls][hidden] { display: none !important; }
@media (max-width: 720px) { .sd3d-built-in-profile-wrap { grid-column: 1 / -1; } }


/* ==========================================================
   v0.3.4 - Simplified Paint-3D-style viewer
   ========================================================== */

.sd3d-simple-render-controls {
    padding: 10px 12px;
    border-top: 1px solid var(--sd3d-border);
    border-bottom: 1px solid var(--sd3d-border);
    background: #fbfcfd;
}

.sd3d-simple-render-controls .sd3d-render-colour-group {
    margin-bottom: 9px;
}

.sd3d-render-primary-row {
    display: flex;
    align-items: flex-end;
    gap: 14px;
    margin-bottom: 9px;
}

.sd3d-render-primary-row .sd3d-render-colour-group {
    flex: 1 1 auto;
    min-width: 0;
    margin-bottom: 0;
}

.sd3d-glass-visibility-inline {
    flex: 0 0 auto;
    display: grid;
    align-content: end;
    gap: 4px;
    min-width: 92px;
    padding-bottom: 3px;
}

.sd3d-glass-visibility-inline > span:last-child {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 34px;
    white-space: nowrap;
    font-size: 12px;
}

.sd3d-simple-render-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
}

.sd3d-simple-render-grid label {
    display: grid;
    gap: 4px;
    min-width: 0;
}

.sd3d-simple-render-grid select {
    width: 100%;
    min-width: 0;
    height: 34px;
    padding: 4px 8px;
    font-size: 12px;
    border: 1px solid var(--sd3d-border);
    border-radius: 6px;
    background: #fff;
    color: var(--sd3d-text);
}

.sd3d-render-note {
    margin: 7px 0 0;
    font-size: 11px;
    line-height: 1.35;
    color: var(--sd3d-muted);
}

.sd3d-canvas-wrap[data-background="light"] {
    background: #eef1f4;
}

.sd3d-canvas-wrap[data-background="dark"] {
    background: #2f3439;
}

.sd3d-canvas-wrap[data-background="dark"] .sd3d-view-tool {
    background: rgba(255,255,255,0.92);
    color: #20262b;
}

@media (max-width: 900px) {
    .sd3d-render-primary-row {
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .sd3d-glass-visibility-inline {
        padding-bottom: 0;
    }

    .sd3d-simple-render-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

/* v0.3.5 - built-in Sydney Doors templates only */
.sd3d-designer [data-manual-profile-controls][hidden] {
    display: none !important;
}

/* ==========================================================
   v0.3.7 - WooCommerce cart door-size loader
   ========================================================== */
.sd3d-section-cart-sizes .sd3d-section-heading {
    margin-bottom: 8px;
}

.sd3d-cart-refresh {
    min-height: 34px;
    padding: 6px 10px;
    white-space: nowrap;
}

.sd3d-cart-size-status {
    margin-bottom: 8px;
    font-size: 11px;
    line-height: 1.4;
    color: var(--sd3d-muted);
}

.sd3d-cart-size-status.is-error {
    color: #a23232;
}

.sd3d-cart-size-list {
    display: grid;
    gap: 6px;
}

.sd3d-cart-size-item {
    appearance: none;
    width: 100%;
    min-width: 0;
    border: 1px solid var(--sd3d-border);
    border-radius: 8px;
    background: #fff;
    padding: 9px 10px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px 12px;
    align-items: center;
    color: var(--sd3d-text);
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.sd3d-cart-size-item:hover,
.sd3d-cart-size-item:focus-visible,
.sd3d-cart-size-item.is-selected {
    border-color: var(--sd3d-accent);
    outline: none;
}

.sd3d-cart-size-item.is-selected {
    box-shadow: inset 3px 0 0 var(--sd3d-accent);
}

.sd3d-cart-size-main {
    min-width: 0;
    display: grid;
    gap: 2px;
}

.sd3d-cart-size-main strong {
    font-size: 12px;
    line-height: 1.3;
}

.sd3d-cart-size-main span,
.sd3d-cart-size-meta {
    font-size: 11px;
    line-height: 1.35;
    color: var(--sd3d-muted);
}

.sd3d-cart-size-meta {
    text-align: right;
    white-space: nowrap;
}

@media (max-width: 620px) {
    .sd3d-cart-size-item {
        grid-template-columns: 1fr;
    }

    .sd3d-cart-size-meta {
        text-align: left;
        white-space: normal;
    }
}

/* ==========================================================
   v0.3.8 - Project Viewer / Custom Design modes + Polytec cart skins
   ========================================================== */
.sd3d-mode-switch {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    margin-bottom: 14px;
    padding: 6px;
    border: 1px solid var(--sd3d-border);
    border-radius: 10px;
    background: var(--sd3d-bg);
}

.sd3d-mode-button {
    min-height: 42px;
    border: 1px solid transparent;
    border-radius: 7px;
    background: transparent;
    color: var(--sd3d-text);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.sd3d-mode-button.is-selected {
    background: #fff;
    border-color: var(--sd3d-accent);
    box-shadow: inset 0 0 0 1px var(--sd3d-accent);
}

.sd3d-mode-button:focus-visible {
    outline: 2px solid var(--sd3d-accent);
    outline-offset: 2px;
}

.sd3d-build-version {
    grid-column: 2;
    justify-self: end;
    padding: 0 5px;
    color: var(--sd3d-muted);
    font-size: 10px;
    line-height: 1.2;
    text-align: right;
    white-space: nowrap;
}

.sd3d-mode-summary {
    grid-column: 1 / -1;
    padding: 4px 5px 2px;
    color: var(--sd3d-muted);
    font-size: 11px;
    line-height: 1.4;
}

.sd3d-mode-cart [data-custom-controls].is-cart-locked {
    background: #fafbfc;
}

.sd3d-mode-cart [data-custom-controls].is-cart-locked .sd3d-section-heading p,
.sd3d-mode-cart [data-custom-controls].is-cart-locked label > span {
    color: #8b949e;
}

.sd3d-mode-cart [data-custom-controls].is-cart-locked input:disabled,
.sd3d-mode-cart [data-custom-controls].is-cart-locked select:disabled,
.sd3d-mode-cart [data-custom-controls].is-cart-locked button:disabled {
    opacity: 0.68;
    cursor: default;
}

.sd3d-cart-size-item {
    grid-template-columns: 42px minmax(0, 1fr) auto;
}

.sd3d-cart-thumb {
    width: 42px;
    height: 42px;
    border: 1px solid var(--sd3d-border);
    border-radius: 6px;
    overflow: hidden;
    background: #f3f4f5;
    display: block;
}

.sd3d-cart-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.sd3d-cart-thumb-placeholder {
    background:
        linear-gradient(135deg, transparent 49%, #d8dde3 50%, transparent 51%),
        #f3f4f5;
}

@media (max-width: 620px) {
    .sd3d-mode-switch {
        grid-template-columns: 1fr;
    }
    .sd3d-mode-summary {
        grid-column: 1;
    }
    .sd3d-cart-size-item {
        grid-template-columns: 42px minmax(0, 1fr);
    }
    .sd3d-cart-size-meta {
        grid-column: 2;
    }
}

/* ==========================================================
   v0.3.9 - Cart-driven P2-P5 / Custom Pattern geometry
   Layout remains unchanged; pattern information is rendered
   through the existing cart-row metadata and 3D mesh.
   ========================================================== */


/* ==========================================================
   v0.4.7 - Profile + Outside Edge paired controls
   ========================================================== */
.sd3d-section-presets .sd3d-preset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 10px;
}
.sd3d-section-presets .sd3d-built-in-profile-wrap,
.sd3d-section-presets .sd3d-outside-edge-wrap {
    grid-column: auto;
}
.sd3d-section-presets .sd3d-profile-template-detail {
    grid-column: 1 / -1;
}
@media (max-width: 620px) {
    .sd3d-section-presets .sd3d-preset-grid {
        grid-template-columns: 1fr;
    }
    .sd3d-section-presets .sd3d-profile-template-detail {
        grid-column: 1;
    }
}


/* v0.4.8 - Make native dropdown controls visibly identifiable. */
.sd3d-designer select {
    -webkit-appearance: none;
    appearance: none;
    padding-right: 34px !important;
    background-color: #fff;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5 6 6.5 11 1.5' fill='none' stroke='%23555' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 11px center;
    background-size: 12px 8px;
    cursor: pointer;
}
.sd3d-designer select:disabled {
    cursor: not-allowed;
}

/* ==========================================================
   v0.5.2 - Unified cart export row
   ========================================================== */
.sd3d-bulk-export-row {
    display: grid;
    grid-template-columns: minmax(150px, 220px) auto auto;
    gap: 8px;
    align-items: end;
    margin-bottom: 10px;
}

.sd3d-export-format-field {
    display: grid;
    gap: 5px;
    min-width: 0;
}

.sd3d-export-format-field > span {
    font-size: 12px;
    font-weight: 700;
    color: var(--sd3d-muted);
}

.sd3d-export-format-field select {
    width: 100%;
    min-height: 38px;
}

@media (max-width: 620px) {
    .sd3d-bulk-export-row {
        grid-template-columns: 1fr 1fr;
    }

    .sd3d-export-format-field {
        grid-column: 1 / -1;
    }
}


/* ==========================================================
   v0.5.2 - Simplified export controls
   ========================================================== */
.sd3d-bulk-export-row {
    grid-template-columns: minmax(150px, 220px) auto auto;
    justify-content: start;
    align-items: end;
    margin-bottom: 8px;
}

.sd3d-bulk-export-row .sd3d-button {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.sd3d-config-actions {
    margin-top: 4px;
}

@media (max-width: 620px) {
    .sd3d-bulk-export-row {
        grid-template-columns: 1fr 1fr;
    }

    .sd3d-bulk-export-row .sd3d-export-format-field {
        grid-column: 1 / -1;
    }

    .sd3d-bulk-export-row .sd3d-button {
        width: 100%;
    }
}


/* Embedded renderer mode for the Custom Builder. Keeps the exact same 3D engine
   while removing the standalone designer controls. */
.sd3d-designer.sd3d-embed .sd3d-controls,
.sd3d-designer.sd3d-embed .sd3d-viewer-toolbar,
.sd3d-designer.sd3d-embed .sd3d-viewer-title,
.sd3d-designer.sd3d-embed .sd3d-simple-render-controls,
.sd3d-designer.sd3d-embed .sd3d-readout { display:none !important; }
.sd3d-designer.sd3d-embed,
.sd3d-designer.sd3d-embed .sd3d-layout,
.sd3d-designer.sd3d-embed .sd3d-viewer-panel {
    width:100% !important;
    max-width:none !important;
    min-width:0 !important;
    margin:0 !important;
    padding:0 !important;
}
.sd3d-designer.sd3d-embed .sd3d-layout { display:block !important; }
.sd3d-designer.sd3d-embed .sd3d-viewer-panel { position:relative !important; top:auto !important; overflow:hidden !important; }
.sd3d-designer.sd3d-embed .sd3d-canvas-wrap {
    width:100% !important;
    min-height:520px;
    height:clamp(420px,58vh,680px);
    margin:0 !important;
    border:0 !important;
    border-radius:8px;
}
.sd3d-designer.sd3d-embed .sd3d-canvas-wrap canvas {
    display:block !important;
    width:100% !important;
    height:100% !important;
    min-height:0 !important;
    max-width:none !important;
    max-height:none !important;
    margin:0 !important;
    padding:0 !important;
    border:0 !important;
    border-radius:0 !important;
    background:transparent !important;
    object-fit:fill !important;
}
.sd3d-designer.sd3d-embed .sd3d-canvas-help { font-size:11px; }
@media (max-width:768px){ .sd3d-designer.sd3d-embed .sd3d-canvas-wrap { min-height:380px; height:480px; } }

/* ==========================================================
   v0.9.93 — Embedded renderer inherits host height on compact layouts.
   The standalone designer keeps its existing responsive sizing; only embed
   mode stops imposing a 480px mobile canvas inside the Custom Builder's
   fixed floating renderer/navigation pane.
   ========================================================== */
@media (max-width:950px), (orientation:portrait) and (min-width:951px) and (max-width:1100px){
  .sd3d-designer.sd3d-embed,
  .sd3d-designer.sd3d-embed .sd3d-layout,
  .sd3d-designer.sd3d-embed .sd3d-viewer-panel,
  .sd3d-designer.sd3d-embed .sd3d-canvas-wrap{
    width:100%!important;
    height:100%!important;
    min-height:0!important;
    max-height:100%!important;
    margin:0!important;
    padding:0!important;
    overflow:hidden!important;
  }

  .sd3d-designer.sd3d-embed .sd3d-canvas-wrap canvas{
    width:100%!important;
    height:100%!important;
    min-height:0!important;
    max-height:100%!important;
  }
}


/* ==========================================================
   v0.9.94 — Compact embedded viewer help + touch gestures
   - Persistent desktop caption is hidden in embed mode.
   - A small ? tooltip exposes device-appropriate controls.
   - Canvas owns touch gestures so one-finger orbit and two-finger
     pinch/pan do not scroll the page underneath the renderer.
   ========================================================== */
.sd3d-designer.sd3d-embed .sd3d-canvas-help{
  display:none!important;
}
.sd3d-designer.sd3d-embed .sd3d-embed-help{
  display:block;
  position:absolute;
  right:8px;
  bottom:8px;
  z-index:8;
  margin:0;
}
.sd3d-designer.sd3d-embed .sd3d-embed-help > summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:center;
  width:28px;
  height:28px;
  padding:0;
  border:1px solid rgba(0,0,0,.24);
  border-radius:50%;
  background:rgba(255,255,255,.92);
  color:#222;
  font:700 14px/1 Arial,sans-serif;
  cursor:pointer;
  box-shadow:0 1px 4px rgba(0,0,0,.15);
  -webkit-tap-highlight-color:transparent;
}
.sd3d-designer.sd3d-embed .sd3d-embed-help > summary::-webkit-details-marker{display:none;}
.sd3d-designer.sd3d-embed .sd3d-embed-help-popover{
  position:absolute;
  right:0;
  bottom:34px;
  width:max-content;
  max-width:min(210px,calc(100vw - 36px));
  padding:8px 10px;
  border:1px solid rgba(0,0,0,.18);
  border-radius:7px;
  background:rgba(255,255,255,.96);
  color:#333;
  font:600 11px/1.45 Arial,sans-serif;
  text-align:left;
  box-shadow:0 3px 12px rgba(0,0,0,.16);
  white-space:nowrap;
}
.sd3d-designer.sd3d-embed .sd3d-help-touch-copy{display:none;}
.sd3d-designer.sd3d-embed .sd3d-help-mouse-copy{display:inline;}
.sd3d-designer.sd3d-embed .sd3d-canvas-wrap canvas{touch-action:none!important;}
@media (hover:none), (pointer:coarse){
  .sd3d-designer.sd3d-embed .sd3d-help-touch-copy{display:inline;}
  .sd3d-designer.sd3d-embed .sd3d-help-mouse-copy{display:none;}
}


/* ==========================================================
   v0.9.95 — Compact embedded Reset control
   Mobile + tablet portrait embedded mode removes the multi-button
   view menu. Keep only Reset at bottom-left, aligned with the ? help
   button at bottom-right. Standalone/desktop controls are unchanged.
   ========================================================== */
@media (max-width:950px), (orientation:portrait) and (min-width:951px) and (max-width:1100px){
  .sd3d-designer.sd3d-embed .sd3d-view-overlay-left{
    top:auto!important;
    right:auto!important;
    left:8px!important;
    bottom:8px!important;
    display:block!important;
    padding:0!important;
    margin:0!important;
    border:0!important;
    border-radius:0!important;
    background:transparent!important;
    box-shadow:none!important;
    backdrop-filter:none!important;
  }

  .sd3d-designer.sd3d-embed .sd3d-view-overlay-left .sd3d-view-tool{
    display:none!important;
  }

  .sd3d-designer.sd3d-embed .sd3d-view-overlay-left .sd3d-view-tool[data-view="reset"]{
    display:flex!important;
    align-items:center!important;
    justify-content:center!important;
    width:auto!important;
    min-width:52px!important;
    height:28px!important;
    min-height:28px!important;
    padding:0 10px!important;
    margin:0!important;
    border:1px solid rgba(0,0,0,.24)!important;
    border-radius:14px!important;
    background:rgba(255,255,255,.92)!important;
    color:#222!important;
    font:700 11px/1 Arial,sans-serif!important;
    box-shadow:0 1px 4px rgba(0,0,0,.15)!important;
    -webkit-tap-highlight-color:transparent;
  }

  .sd3d-designer.sd3d-embed .sd3d-embed-help{
    right:8px!important;
    bottom:8px!important;
  }
}


/* v0.9.96 — Embedded responsive WebGL buffer fix */
.sd3d-designer[data-sd3d-embed="1"] .sd3d-canvas-wrap > canvas {
    display: block !important;
    max-width: 100% !important;
    max-height: 100% !important;
}


/* ==========================================================
   v0.9.231 — Export alignment + tablet Custom Colour RGB popup
   ========================================================== */
.sd3d-bulk-export-row {
    align-items: end;
}
.sd3d-bulk-export-row .sd3d-export-format-field {
    margin: 0;
    align-self: end;
}
.sd3d-bulk-export-row .sd3d-export-format-field select,
.sd3d-bulk-export-row .sd3d-button {
    box-sizing: border-box;
    height: 38px;
    min-height: 38px;
    margin: 0;
}
.sd3d-bulk-export-row .sd3d-export-format-field select {
    line-height: 1.2;
}

.sd3d-custom-colour-wrap {
    position: relative;
    display: inline-flex;
}
.sd3d-colour-popup[hidden] { display: none !important; }
.sd3d-colour-popup {
    position: fixed;
    inset: 0;
    z-index: 1000005;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
}
.sd3d-colour-popup-backdrop {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    background: rgba(10,18,30,.48);
}
.sd3d-colour-popup-panel {
    position: relative;
    z-index: 1;
    width: min(320px, calc(100vw - 28px));
    padding: 14px;
    border: 1px solid var(--sd3d-border);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 16px 46px rgba(0,0,0,.24);
}
.sd3d-colour-popup-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}
.sd3d-colour-popup-head > button {
    width: 34px;
    height: 34px;
    min-width: 34px;
    padding: 0;
    border: 1px solid var(--sd3d-border);
    border-radius: 8px;
    background: #fff;
    font-size: 22px;
    line-height: 1;
}
.sd3d-colour-popup-picker {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 12px;
    font-weight: 700;
}
.sd3d-colour-popup-picker input[type="color"] {
    width: 100%;
    height: 42px;
    padding: 2px;
    border: 1px solid var(--sd3d-border);
    border-radius: 7px;
    background: #fff;
}
.sd3d-colour-popup-rgb {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}
.sd3d-colour-popup-rgb label {
    display: grid;
    gap: 5px;
    min-width: 0;
}
.sd3d-colour-popup-rgb label > span {
    margin: 0 !important;
    font-size: 11px;
    font-weight: 700;
}
.sd3d-colour-popup-rgb input[type="number"] {
    width: 100%;
    min-width: 0;
    height: 40px;
    min-height: 40px;
    padding: 5px 6px;
    text-align: center;
    font-size: 16px;
    font-variant-numeric: tabular-nums;
}
@media (hover:hover) and (pointer:fine) {
    .sd3d-colour-popup { display: none !important; }
}


/* ==========================================================
   v0.9.232 — Desktop 3D viewer viewport-fit / compact controls
   ========================================================== */
@media (min-width: 981px) {
    /* Keep the complete right-hand viewer inside the desktop viewport. */
    .sd3d-designer:not(.sd3d-embed) .sd3d-viewer-panel {
        height: calc(100vh - 36px);
        max-height: calc(100vh - 36px);
        min-height: min(520px, calc(100vh - 36px));
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-viewer-toolbar {
        flex: 0 0 auto;
        min-height: 34px;
        padding: 6px 9px;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-viewer-title {
        gap: 0;
        line-height: 1.15;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-viewer-title > strong {
        font-size: 13px;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-viewer-title > span {
        font-size: 10px;
        line-height: 1.15;
    }

    /* Compact the appearance controls without changing their behaviour. */
    .sd3d-designer:not(.sd3d-embed) .sd3d-simple-render-controls {
        flex: 0 0 auto;
        padding: 5px 8px 6px;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-render-primary-row {
        gap: 8px;
        margin-bottom: 5px;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-render-label {
        margin-bottom: 2px;
        font-size: 10px;
        line-height: 1.1;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-swatches {
        gap: 4px;
        flex-wrap: nowrap;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-swatch {
        width: 23px;
        height: 23px;
        min-width: 23px;
        border-width: 1px;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-colour-picker {
        min-height: 25px;
        height: 25px;
        gap: 4px;
        padding: 1px 4px 1px 6px;
        border-radius: 5px;
        font-size: 10px;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-colour-picker input[type="color"] {
        width: 22px;
        height: 20px;
        padding: 0;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-glass-visibility-inline {
        min-width: 78px;
        gap: 2px;
        padding-bottom: 0;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-glass-visibility-inline > span:last-child {
        gap: 4px;
        min-height: 25px;
        font-size: 10px;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-simple-render-grid {
        gap: 4px 6px;
        align-items: end;
    }

    /* Keep Background / Finish / Detail / Display on identical label and control rows. */
    .sd3d-designer:not(.sd3d-embed) .sd3d-simple-render-grid label {
        display: grid;
        grid-template-rows: 11px 27px;
        gap: 2px;
        align-items: end;
        margin: 0;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-simple-render-grid label > .sd3d-render-label {
        min-height: 11px;
        margin: 0 !important;
        align-self: end;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-simple-render-grid select {
        display: block;
        align-self: end;
        width: 100%;
        height: 27px;
        min-height: 27px;
        margin: 0 !important;
        padding: 2px 6px;
        font-size: 11px;
        line-height: 1.2;
        border-radius: 5px;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-render-note {
        display: none;
    }

    /* The renderer takes all space left after toolbar + compact controls + readout. */
    .sd3d-designer:not(.sd3d-embed) .sd3d-canvas-wrap {
        flex: 1 1 auto;
        min-height: 0 !important;
        height: auto;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-canvas-wrap canvas {
        width: 100%;
        height: 100%;
        min-height: 0 !important;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-readout {
        flex: 0 0 auto;
        max-height: 42px;
        overflow: hidden;
        padding: 5px 9px 6px;
        font-size: 10px;
        line-height: 1.25;
    }

    .sd3d-designer:not(.sd3d-embed) .sd3d-canvas-help {
        bottom: 7px;
        padding: 4px 6px;
        font-size: 10px;
    }
}