/* The sandbox's own chrome. The editor inside it is themed by its `theme` attribute, not by this. */
:root {
  --sb-bg: #eef0f3; --sb-panel: #ffffff; --sb-ink: #16181d; --sb-muted: #646b78; --sb-line: #dfe3ea;
  --sb-soft: #f5f6f8; --sb-accent: #4f46e5; --sb-accent-soft: #eceafd; --sb-on-accent: #fff; --sb-danger: #d03a3a;
  --sb-radius: 10px; --sb-shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 4px 16px rgba(16, 24, 40, .06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --sb-bg: #0e1013; --sb-panel: #171a1f; --sb-ink: #e8eaee; --sb-muted: #9097a3; --sb-line: #2a2f37;
    --sb-soft: #1e2228; --sb-accent: #8b85ff; --sb-accent-soft: #25234a; --sb-on-accent: #0e1013; --sb-danger: #ff7b7b;
    --sb-shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 16px rgba(0, 0, 0, .3);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --sb-bg: #0e1013; --sb-panel: #171a1f; --sb-ink: #e8eaee; --sb-muted: #9097a3; --sb-line: #2a2f37;
  --sb-soft: #1e2228; --sb-accent: #8b85ff; --sb-accent-soft: #25234a; --sb-on-accent: #0e1013; --sb-danger: #ff7b7b;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--sb-bg); color: var(--sb-ink); font: 14px/1.45 system-ui, -apple-system, 'Segoe UI', sans-serif; }
code { font: 12px ui-monospace, Menlo, Consolas, monospace; }
button, select, input, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }
.sb-muted { color: var(--sb-muted); }

/* ---- app grid ---------------------------------------------------------------------------- */
.sb-app { display: grid; grid-template-columns: 250px minmax(0, 1fr) 300px; grid-template-rows: auto minmax(0, 1fr); grid-template-areas: "top top top" "palette canvas inspector"; height: 100vh; }
/* One row: the layout (left), the mode (centre), sizes, help and the code (right). */
.sb-top { grid-area: top; display: grid; grid-template-columns: auto minmax(0, 1fr) auto minmax(0, 1fr); align-items: center; gap: 14px; padding: 8px 16px; background: var(--sb-panel); border-bottom: 1px solid var(--sb-line); }
.sb-brand { display: flex; align-items: center; gap: 8px; color: var(--sb-accent); white-space: nowrap; }
.sb-brand strong { color: var(--sb-ink); font-size: 14px; }
.sb-top-start { display: flex; align-items: center; gap: 8px; min-width: 0; }
.sb-top-end { display: flex; align-items: center; justify-content: flex-end; gap: 8px; }
.sb-icons button { display: grid; place-items: center; width: 34px; padding: 0; }
.sb-icons svg { width: 17px; height: 17px; }

/* The layout's name, as a menu. */
.sb-menu-wrap { position: relative; min-width: 0; }
.sb-layout-button { display: flex; align-items: center; gap: 8px; max-width: 100%; height: 36px; padding: 0 10px 0 12px; border-radius: 9px; border: 1px solid var(--sb-line); background: var(--sb-panel); color: var(--sb-ink); font: 600 13.5px system-ui, sans-serif; cursor: pointer; }
.sb-layout-button:hover, .sb-layout-button[aria-expanded="true"] { background: var(--sb-soft); }
.sb-layout-kicker { color: var(--sb-muted); font-weight: 500; font-size: 12px; }
.sb-layout-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sb-layout-button svg { flex: none; width: 15px; height: 15px; color: var(--sb-muted); }
.sb-menu { position: absolute; top: calc(100% + 6px); left: 0; z-index: 950; width: 340px; max-height: min(70vh, 640px); overflow: auto; padding: 6px; border: 1px solid var(--sb-line); border-radius: 12px; background: var(--sb-panel); box-shadow: 0 12px 32px rgba(16, 24, 40, .18); }
.sb-menu[hidden] { display: none; }
.sb-menu [role^="menuitem"] { display: flex; align-items: flex-start; gap: 10px; width: 100%; padding: 8px 10px; border: 0; border-radius: 8px; background: none; color: var(--sb-ink); font: 600 13px/1.35 system-ui, sans-serif; text-align: left; cursor: pointer; }
.sb-menu [role^="menuitem"]:hover, .sb-menu [role^="menuitem"]:focus-visible { background: var(--sb-soft); outline: none; }
.sb-menu [role^="menuitem"]:focus-visible { box-shadow: inset 0 0 0 2px var(--sb-accent); }
.sb-menu [role^="menuitem"] svg { flex: none; width: 16px; height: 16px; margin-top: 1px; color: var(--sb-muted); }
.sb-menu [role^="menuitem"] span { display: grid; }
.sb-menu small { color: var(--sb-muted); font-weight: 500; font-size: 12px; }
.sb-menu [role="menuitemradio"] { padding-left: 36px; position: relative; }
.sb-menu [role="menuitemradio"][aria-checked="true"]::before { content: '✓'; position: absolute; left: 13px; top: 8px; color: var(--sb-accent); font-weight: 700; }
.sb-menu-label { margin: 8px 10px 4px; padding-top: 8px; border-top: 1px solid var(--sb-line); color: var(--sb-muted); font: 700 11px system-ui, sans-serif; letter-spacing: .06em; text-transform: uppercase; }

/* The live editor's bar, above the canvas: what it's open on, its status, and what to try while using it. */
.sb-session { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; }
.sb-session .sb-field select { max-width: 340px; }
.sb-session-use { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.sb-app[data-mode="arrange"] .sb-session-use { display: none; }
.sb-app[data-mode="preview"] .sb-session { display: none; }
.sb-field { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--sb-muted); }
.sb-field select, .sb-input { height: 34px; padding: 0 10px; border-radius: 8px; border: 1px solid var(--sb-line); background: var(--sb-panel); color: var(--sb-ink); max-width: 260px; }
.sb-mode { display: inline-flex; padding: 3px; border-radius: 10px; background: var(--sb-soft); border: 1px solid var(--sb-line); }
.sb-mode button { height: 28px; padding: 0 14px; border: 0; border-radius: 7px; background: none; font-weight: 600; font-size: 13px; color: var(--sb-muted); cursor: pointer; }
.sb-mode button[aria-pressed="true"] { background: var(--sb-panel); color: var(--sb-ink); box-shadow: var(--sb-shadow); }
.sb-status { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--sb-muted); }
.sb-status i { width: 8px; height: 8px; border-radius: 50%; background: var(--sb-line); }
.sb-status[data-state="loading"] i { background: var(--sb-accent); animation: sb-pulse 1s ease-in-out infinite; }
.sb-status[data-state="ready"] i { background: #22a06b; }
.sb-status[data-state="error"] i { background: var(--sb-danger); }
.sb-actions { display: flex; gap: 8px; margin-left: auto; align-items: center; }
.sb-btn { height: 34px; padding: 0 14px; border-radius: 8px; border: 1px solid var(--sb-line); background: var(--sb-panel); font-weight: 600; font-size: 13px; cursor: pointer; }
.sb-btn:hover { background: var(--sb-soft); }
.sb-btn.sb-primary { background: var(--sb-accent); border-color: var(--sb-accent); color: var(--sb-on-accent); }
.sb-btn.sb-primary:hover { filter: brightness(1.08); }
.sb-btn:disabled { opacity: .5; cursor: default; }
.sb-orders { display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 10px; border-radius: 8px; border: 1px solid var(--sb-line); font-size: 13px; font-weight: 600; color: var(--sb-muted); cursor: pointer; }
.sb-orders input { accent-color: var(--sb-danger); }
.sb-real-orders .sb-orders { border-color: var(--sb-danger); background: color-mix(in srgb, var(--sb-danger) 12%, transparent); color: var(--sb-danger); }
.sb-btn.sb-icon { width: 34px; padding: 0; font-size: 20px; line-height: 1; }
.sb-link { border: 0; background: none; color: var(--sb-accent); font-weight: 600; font-size: 12px; cursor: pointer; padding: 0; }

/* ---- palette ----------------------------------------------------------------------------- */
.sb-palette, .sb-inspector { overflow: auto; background: var(--sb-panel); padding: 14px; }
.sb-palette { grid-area: palette; border-right: 1px solid var(--sb-line); }
.sb-inspector { grid-area: inspector; border-left: 1px solid var(--sb-line); display: flex; flex-direction: column; gap: 12px; }
.sb-panel-head { display: grid; gap: 2px; margin-bottom: 12px; }
.sb-panel-head h2, .sb-group-title { margin: 0; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--sb-muted); }
.sb-panel-head small { color: var(--sb-muted); font-size: 12px; }
.sb-group-title { margin: 14px 0 6px; }
.sb-card { display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 10px; width: 100%; margin-bottom: 6px; padding: 8px; border: 1px solid var(--sb-line); border-radius: var(--sb-radius); background: var(--sb-panel); text-align: left; cursor: grab; transition: border-color .12s, transform .12s, box-shadow .12s; }
.sb-card:hover { border-color: var(--sb-accent); box-shadow: var(--sb-shadow); }
.sb-card:active { cursor: grabbing; }
.sb-card[aria-disabled="true"] { opacity: .5; cursor: default; }
.sb-card[aria-disabled="true"]:hover { border-color: var(--sb-line); box-shadow: none; }
.sb-card .sb-glyph { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 8px; background: var(--sb-accent-soft); color: var(--sb-accent); }
.sb-card .sb-glyph svg { width: 17px; height: 17px; }
.sb-card strong { display: block; font-size: 13px; }
.sb-card small { display: block; color: var(--sb-muted); font-size: 11.5px; line-height: 1.35; }
.sb-card .sb-add { width: 26px; height: 26px; border-radius: 7px; border: 1px solid var(--sb-line); background: var(--sb-soft); font-size: 16px; line-height: 1; cursor: pointer; }
.sb-card .sb-add:hover:not(:disabled) { background: var(--sb-accent); color: var(--sb-on-accent); border-color: var(--sb-accent); }
.sb-card .sb-add:disabled { opacity: .4; cursor: default; }

/* ---- canvas: the live editor ------------------------------------------------------------- */
.sb-canvas { grid-area: canvas; position: relative; min-width: 0; min-height: 0; padding: 14px; overflow: hidden; display: flex; flex-direction: column; gap: 10px; }
.sb-single-note { padding: 10px 14px; border-radius: var(--sb-radius); background: var(--sb-accent-soft); font-size: 13px; }
/* The device frame: the editor gets a tablet's or phone's width; its regions follow by container query. */
.sb-device { flex: 1; min-height: 0; width: 100%; margin: 0 auto; display: flex; flex-direction: column; container: sb-device / inline-size; transition: width .25s ease, max-height .25s ease; }
.sb-canvas[data-device="tablet"] .sb-device { width: min(820px, 100%); }
.sb-canvas[data-device="phone"] .sb-device { width: min(410px, 100%); max-height: 860px; padding: 10px; border-radius: 40px; background: #111317; box-shadow: var(--sb-shadow); }
.sb-device > taopix-editor { flex: 1; min-height: 0; width: 100%; border-radius: 14px; box-shadow: var(--sb-shadow); }
.sb-canvas[data-device="phone"] .sb-device > taopix-editor { border-radius: 30px; box-shadow: none; }

/* The composed editor lays its regions out on a grid; the sandbox sets the side widths. */
taopix-editor.sb-editor.sb-no-sides { column-gap: 0; }
taopix-editor.sb-editor {
  display: grid; gap: 10px; padding: 10px; overflow: hidden;
  grid-template-areas: "top top top" "left center right" "bottom bottom bottom";
  grid-template-columns: var(--sb-left-w, 280px) minmax(0, 1fr) var(--sb-right-w, 280px);
  grid-template-rows: auto minmax(0, 1fr) auto;
  background: var(--tpx-canvas, #eef0f3); border: 1px solid var(--tpx-line, #dfe3ea);
}
.sb-region { position: relative; min-width: 0; min-height: 0; border-radius: 12px; }
.sb-region[data-region="top"] { grid-area: top; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 8px 12px; background: var(--tpx-surface); border: 1px solid var(--tpx-line); }
.sb-region[data-region="bottom"] { grid-area: bottom; display: flex; align-items: stretch; gap: 10px; padding: 6px 10px; background: var(--tpx-surface); border: 1px solid var(--tpx-line); }
.sb-region[data-region="left"], .sb-region[data-region="right"] { display: flex; flex-direction: column; gap: 12px; padding: 12px; overflow: auto; background: var(--tpx-surface); border: 1px solid var(--tpx-line); }
.sb-region[data-region="left"] { grid-area: left; }
.sb-region[data-region="right"] { grid-area: right; }
.sb-region[data-region="center"] { grid-area: center; display: flex; flex-direction: column; gap: 10px; }
.sb-region.is-empty { display: none; }
/* Side columns scroll; their elements keep their own height (except tabs, which fill the column). */
.sb-region[data-region="left"] > .sb-block, .sb-region[data-region="right"] > .sb-block { flex: none; }
.sb-region[data-region="left"] > .sb-block[data-type="tabs"], .sb-region[data-region="right"] > .sb-block[data-type="tabs"] { flex: 1 1 0; min-height: 320px; }

/* Layout containers: a row, a column, tabs, a section that folds away. */
.sb-container { min-width: 0; min-height: 0; }
.sb-container[data-kind="row"] { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.sb-container[data-kind="column"] { display: flex; flex-direction: column; gap: 10px; }
.sb-container[data-kind="tabs"] { display: flex; flex-direction: column; gap: 10px; height: 100%; }
.sb-container[data-kind="tabs"] > .sb-slot { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.sb-container[data-kind="tabs"] > .sb-slot > .sb-block { flex: 1; min-height: 0; display: flex; flex-direction: column; }
details.sb-container > summary { padding: 4px 2px; font-weight: 600; font-size: 13.5px; color: var(--tpx-text); cursor: pointer; }
details.sb-container > .sb-slot { display: flex; flex-direction: column; gap: 10px; padding-top: 6px; }
.sb-block[data-type="tabs"] { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.sb-block[data-type="tabs"] > .sb-container { flex: 1; }
.sb-region[data-region="top"] > .sb-block[data-type="row"], .sb-region[data-region="bottom"] > .sb-block[data-type="row"] { flex: 1; }

/* Blocks: an element plus the sandbox's handle. */
.sb-block { position: relative; min-width: 0; min-height: 0; }
.sb-region[data-region="top"] > .sb-block { flex: none; }
.sb-region[data-region="top"] > .sb-block[data-type="title"] { flex: 1; }
.sb-region[data-region="bottom"] > .sb-block { flex: 1; }
/* In the bottom bar only the page strip stretches; a price or a button sits at its own size. */
.sb-region[data-region="bottom"] > .sb-block:not([data-type="page-strip"]):not([data-type="row"]) { flex: none; align-self: center; }
/* A preview in the centre fills it, as the stage does. */
.sb-region[data-region="center"] > .sb-block[data-type="preview-3d"] { flex: 1; display: flex; flex-direction: column; }
.sb-region[data-region="center"] > .sb-block[data-type="preview-3d"] > taopix-preview-3d { flex: 1; height: auto; }
.sb-block[data-type="stage"] { flex: 1; display: flex; flex-direction: column; min-height: 280px; }
.sb-region[data-region="top"] > .sb-block[data-type="stage"], .sb-region[data-region="bottom"] > .sb-block[data-type="stage"] { min-height: 320px; flex-basis: 100%; }
.sb-region[data-region="center"] > .sb-block[data-type="product-picker"] { flex: 1; overflow: auto; }
.sb-block > taopix-stage { flex: 1; min-height: 0; border-radius: 12px; border: 1px solid var(--tpx-line); }
.sb-block > taopix-preview-3d { display: block; height: 300px; border-radius: 12px; overflow: hidden; }
.sb-region[data-region="center"] > .sb-block > taopix-preview-3d { height: 100%; min-height: 300px; }
.sb-block > taopix-page-strip[orientation="vertical"] { max-height: 70vh; }
.sb-block > h2 { margin: 0; font-size: 17px; color: var(--tpx-text); }
.sb-block > p { margin: 0; font-size: 13px; color: var(--tpx-muted); }

/* A side region shown as tabs: one element at a time. */
.sb-tabbar:empty { display: none; }
.sb-tabbar { display: flex; gap: 4px; padding: 3px; border-radius: 10px; background: var(--tpx-surface-2); flex: none; }
.sb-tabbar { flex-wrap: wrap; }
.sb-tabbar button { flex: 1 0 auto; min-width: 0; padding: 7px 4px; border: 0; border-radius: 8px; background: none; color: var(--tpx-muted); font-weight: 600; font-size: 12.5px; cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sb-tabbar button[aria-selected="true"] { background: var(--tpx-surface); color: var(--tpx-text); box-shadow: 0 1px 2px rgba(0, 0, 0, .08); }

/* Arrange mode: the elements are shown but don't take input; the handles and drop zones appear. */
.sb-chrome { display: none; }
[data-mode="arrange"] .sb-chrome { position: absolute; z-index: 30; top: -1px; left: -1px; display: flex; align-items: center; gap: 2px; height: 22px; padding: 0 2px 0 6px; border-radius: 8px 0 8px 0; background: var(--sb-accent); color: var(--sb-on-accent); font: 600 11px system-ui, sans-serif; cursor: grab; opacity: .0; transition: opacity .12s; white-space: nowrap; }
[data-mode="arrange"] .sb-block:hover > .sb-chrome, [data-mode="arrange"] .sb-block.is-selected > .sb-chrome { opacity: 1; }
.sb-chrome button { width: 18px; height: 18px; padding: 0; border: 0; border-radius: 4px; background: none; color: inherit; cursor: pointer; font-size: 13px; line-height: 1; }
.sb-chrome button:hover { background: rgba(255, 255, 255, .2); }
[data-mode="arrange"] .sb-block > :not(.sb-chrome):not(.sb-container) { pointer-events: none; user-select: none; }
/* A container's contents sit below its handle while arranging, so drops don't land on the handle. */
[data-mode="arrange"] .sb-block > .sb-container { margin-top: 24px; }
/* A block inside a container shows its handle top-right, clear of the container's. */
[data-mode="arrange"] .sb-container .sb-chrome { left: auto; right: -1px; border-radius: 0 8px 0 8px; }
[data-mode="arrange"] .sb-block { outline: 1px dashed color-mix(in srgb, var(--sb-accent) 45%, transparent); outline-offset: 2px; border-radius: 10px; cursor: pointer; }
[data-mode="arrange"] .sb-block:hover { outline-style: solid; }
[data-mode="arrange"] .sb-block.is-selected { outline: 2px solid var(--sb-accent); }
[data-mode="arrange"] .sb-block.is-dragging { opacity: .35; }
[data-mode="arrange"] .sb-container .sb-slot.is-empty, [data-mode="arrange"] .sb-container.sb-slot.is-empty { display: flex; align-items: center; justify-content: center; min-height: 48px; border: 1.5px dashed color-mix(in srgb, var(--sb-accent) 40%, var(--tpx-line)); border-radius: 10px; }
[data-mode="arrange"] .sb-slot.is-empty:not(.sb-region)::before { content: attr(data-label); color: var(--sb-muted); font: 600 11.5px system-ui, sans-serif; padding: 6px; text-align: center; }
[data-mode="arrange"] .sb-region.is-empty { display: flex; align-items: center; justify-content: center; min-height: 54px; border: 1.5px dashed color-mix(in srgb, var(--sb-accent) 50%, var(--tpx-line)); background: color-mix(in srgb, var(--sb-accent) 5%, transparent); }
[data-mode="arrange"] .sb-region.is-empty::before { content: attr(data-label); color: var(--sb-muted); font: 600 12px system-ui, sans-serif; text-align: center; padding: 6px; }
[data-mode="arrange"] .sb-slot.is-over { box-shadow: inset 0 0 0 2px var(--sb-accent); }
[data-mode="arrange"] .sb-region.is-selected { box-shadow: inset 0 0 0 2px color-mix(in srgb, var(--sb-accent) 60%, transparent); }
.sb-indicator { position: absolute; z-index: 50; background: var(--sb-accent); border-radius: 2px; pointer-events: none; box-shadow: 0 0 0 2px color-mix(in srgb, var(--sb-accent) 25%, transparent); }

/* ---- inspector ----------------------------------------------------------------------------- */
.sb-tabs { display: flex; gap: 4px; padding: 3px; border-radius: 10px; background: var(--sb-soft); border: 1px solid var(--sb-line); }
.sb-tabs button { flex: 1; height: 28px; border: 0; border-radius: 7px; background: none; color: var(--sb-muted); font-weight: 600; font-size: 13px; cursor: pointer; }
.sb-tabs button[aria-selected="true"] { background: var(--sb-panel); color: var(--sb-ink); box-shadow: var(--sb-shadow); }
.sb-tabs button span { display: inline-block; min-width: 18px; padding: 0 5px; border-radius: 9px; background: var(--sb-accent-soft); color: var(--sb-accent); font-size: 11px; }
.sb-tab-body { display: flex; flex-direction: column; gap: 14px; }
.sb-section { display: grid; gap: 10px; padding-bottom: 14px; border-bottom: 1px solid var(--sb-line); }
.sb-section:last-child { border-bottom: 0; }
.sb-section h3 { margin: 0; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.sb-section h3 code { font-size: 12px; font-weight: 500; color: var(--sb-accent); }
.sb-section p { margin: 0; font-size: 13px; color: var(--sb-muted); }
.sb-section h4 { margin: 0; font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--sb-muted); }
.sb-prop { display: grid; gap: 4px; font-size: 13px; }
.sb-prop > span { display: flex; justify-content: space-between; gap: 8px; font-weight: 600; }
.sb-prop > span code { font-weight: 400; color: var(--sb-muted); }
.sb-prop small { color: var(--sb-muted); font-size: 11.5px; }
.sb-prop input[type="text"], .sb-prop input[type="number"], .sb-prop select { width: 100%; height: 32px; padding: 0 8px; border-radius: 8px; border: 1px solid var(--sb-line); background: var(--sb-panel); color: var(--sb-ink); }
.sb-prop input[type="range"] { width: 100%; accent-color: var(--sb-accent); }
.sb-check { display: flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; }
.sb-check input { accent-color: var(--sb-accent); width: 16px; height: 16px; }
.sb-check code { margin-left: auto; font-weight: 400; color: var(--sb-muted); }
.sb-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.sb-chips button { padding: 5px 10px; border-radius: 999px; border: 1px solid var(--sb-line); background: var(--sb-panel); font-size: 12px; cursor: pointer; }
.sb-chips button[aria-pressed="true"] { background: var(--sb-ink); color: var(--sb-panel); border-color: var(--sb-ink); }
.sb-chips code { padding: 3px 7px; border-radius: 6px; background: var(--sb-soft); font-size: 11.5px; }
.sb-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.sb-warn { padding: 8px 10px; border-radius: 8px; background: color-mix(in srgb, #d97706 14%, transparent); color: inherit; font-size: 12.5px; }
.sb-snippet { margin: 0; padding: 10px; border-radius: 8px; background: var(--sb-soft); font: 11.5px/1.5 ui-monospace, Menlo, monospace; white-space: pre-wrap; word-break: break-word; color: var(--sb-muted); }
.sb-danger-btn { color: var(--sb-danger); }
.sb-log { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; font-size: 12px; }
.sb-log li { display: grid; gap: 2px; padding: 7px 9px; border-radius: 8px; background: var(--sb-soft); }
.sb-log li .sb-row strong { font: 600 12px ui-monospace, Menlo, monospace; color: var(--sb-accent); }
.sb-log li .sb-row small { color: var(--sb-muted); }
.sb-log li code { color: var(--sb-muted); word-break: break-word; white-space: pre-wrap; }
.sb-log li.is-warn strong { color: #d97706; }

.sb-order { gap: 8px; }
.sb-order > span:last-child { display: inline-flex; gap: 6px; }
[data-mode="arrange"] .sb-block:focus-visible { outline: 3px solid var(--sb-accent); outline-offset: 2px; }
.sb-style-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 10px; align-items: end; }
.sb-colour input[type="color"] { width: 34px; height: 28px; padding: 0; border: 1px solid var(--sb-line); border-radius: 6px; background: none; cursor: pointer; }
.sb-colour.is-unset input[type="color"] { opacity: .4; }
.sb-colour code { font-size: 11px; color: var(--sb-muted); }

/* ---- try it ---------------------------------------------------------------------------------- */
.sb-try-list { display: grid; gap: 6px; }
.sb-try-btn { height: auto; min-height: 34px; padding: 6px 12px; text-align: left; background: var(--sb-accent-soft); border-color: transparent; color: var(--sb-accent); }
.sb-try-btn:disabled { opacity: .55; cursor: default; }
.sb-steps { margin: 0; padding: 0; list-style: none; display: grid; gap: 4px; counter-reset: step; }
.sb-steps li { display: grid; grid-template-columns: 22px 1fr; gap: 2px 8px; align-items: center; font-size: 12.5px; counter-increment: step; }
.sb-steps li::before { content: counter(step); display: grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--sb-soft); color: var(--sb-muted); font-size: 11px; font-weight: 700; }
.sb-steps li[data-state="running"]::before { background: var(--sb-accent); color: var(--sb-on-accent); animation: sb-pulse 1s ease-in-out infinite; }
.sb-steps li[data-state="done"]::before { content: '✓'; background: #22a06b; color: #fff; }
.sb-steps li[data-state="failed"]::before { content: '!'; background: var(--sb-danger); color: #fff; }
.sb-steps li small { grid-column: 2; color: var(--sb-danger); }
.sb-demo-ring { position: fixed; z-index: 2147483000; pointer-events: none; border: 3px solid var(--sb-accent); border-radius: 12px; box-shadow: 0 0 0 4px color-mix(in srgb, var(--sb-accent) 25%, transparent), 0 6px 20px rgba(0, 0, 0, .2); transition: left .25s ease, top .25s ease, width .25s ease, height .25s ease, transform .12s ease; }
.sb-demo-ring.is-pressing { transform: scale(.92); }
@media (prefers-reduced-motion: reduce) { .sb-demo-ring { transition: none; } }

/* ---- tutorial ------------------------------------------------------------------------------- */
.sb-tutorial { position: relative; color: var(--sb-accent); border-color: color-mix(in srgb, var(--sb-accent) 40%, var(--sb-line)); }
.sb-tutorial.is-new::after { content: ''; position: absolute; top: -4px; right: -4px; width: 10px; height: 10px; border-radius: 50%; background: var(--sb-danger); box-shadow: 0 0 0 2px var(--sb-panel); animation: sb-pulse 1.4s ease-in-out infinite; }
.sb-tour-spot { position: fixed; inset: auto; margin: 0; padding: 0; border: 3px solid var(--sb-accent); border-radius: 14px; background: transparent; pointer-events: none; overflow: visible;
  box-shadow: 0 0 0 9999px rgba(10, 12, 20, .32), 0 0 0 6px color-mix(in srgb, var(--sb-accent) 25%, transparent); transition: left .3s ease, top .3s ease, width .3s ease, height .3s ease; }
.sb-tour-card { position: fixed; inset: auto; margin: 0; width: min(380px, calc(100vw - 32px)); padding: 16px 18px 12px; border: 1px solid var(--sb-line); border-radius: 16px; background: var(--sb-panel); color: var(--sb-ink);
  box-shadow: 0 18px 50px rgba(10, 12, 20, .28); font: 14px/1.5 system-ui, -apple-system, 'Segoe UI', sans-serif; transition: left .3s ease, top .3s ease; }
.sb-tour-card h3 { margin: 4px 0 6px; font-size: 17px; }
.sb-tour-body { color: var(--sb-ink); font-size: 13.5px; }
.sb-tour-body code { font-size: 12px; color: var(--sb-accent); }
.sb-tour-head { display: flex; justify-content: space-between; align-items: center; }
.sb-tour-count { font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--sb-muted); }
.sb-tour-x { width: 26px; height: 26px; border: 0; border-radius: 50%; background: var(--sb-soft); color: var(--sb-muted); font-size: 16px; line-height: 1; cursor: pointer; }
.sb-tour-status { margin: 10px 0 0; font-size: 12.5px; font-weight: 600; color: var(--sb-muted); }
.sb-tour-status[data-ok="true"] { color: #22a06b; }
.sb-tour-actions { display: flex; align-items: center; gap: 8px; margin-top: 12px; }
.sb-tour-actions span { flex: 1; }
.sb-tour-actions .sb-btn:disabled { opacity: .45; }
.sb-tour-dots { display: flex; gap: 4px; margin-top: 12px; }
.sb-tour-dots i { flex: 1; height: 3px; border-radius: 2px; background: var(--sb-line); }
.sb-tour-dots i[data-on="true"] { background: var(--sb-accent); }
@media (prefers-reduced-motion: reduce) { .sb-tour-spot, .sb-tour-card { transition: none; } .sb-tutorial.is-new::after { animation: none; } }

/* ---- layouts dialog ---------------------------------------------------------------------- */
.sb-history { display: inline-flex; gap: 4px; }
.sb-history .sb-btn { display: grid; place-items: center; width: 32px; height: 32px; }
.sb-history svg { width: 16px; height: 16px; }
.sb-layouts { width: min(560px, 94vw); }
.sb-layouts form { gap: 8px; }
.sb-layouts form .sb-input { flex: 1; max-width: none; }
.sb-layout-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; overflow: auto; }
.sb-layout-list li { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 10px; background: var(--sb-soft); }
.sb-layout-list li > div { display: grid; min-width: 0; }
.sb-layout-list small { color: var(--sb-muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.sb-code { width: min(1000px, 96vw); }
.sb-code .sb-dialog-head .sb-tabs { margin-left: 12px; }
.sb-code .sb-dialog-head .sb-tabs button { padding: 0 14px; white-space: nowrap; }
.sb-settings { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.sb-settings .sb-wide { grid-column: 1 / -1; }
.sb-settings input { width: 100%; height: 32px; padding: 0 8px; border-radius: 8px; border: 1px solid var(--sb-line); background: var(--sb-panel); color: var(--sb-ink); font: 12px ui-monospace, Menlo, monospace; }
.sb-files { display: grid; gap: 12px; min-height: 0; overflow: auto; }
.sb-file { display: grid; gap: 6px; }
.sb-file pre { max-height: 46vh; }
@media (max-width: 760px) { .sb-settings { grid-template-columns: 1fr 1fr; } }

/* ---- code dialog --------------------------------------------------------------------------- */
.sb-dialog { width: min(900px, 94vw); max-height: 88vh; padding: 18px; border: 1px solid var(--sb-line); border-radius: 16px; background: var(--sb-panel); color: var(--sb-ink); box-shadow: var(--sb-shadow); }
.sb-dialog::backdrop { background: rgba(10, 12, 16, .5); }
.sb-dialog[open] { display: flex; flex-direction: column; gap: 10px; }
.sb-dialog-head { display: flex; align-items: center; gap: 10px; }
.sb-dialog p { margin: 0; font-size: 13px; }
.sb-dialog pre { flex: 1; min-height: 0; overflow: auto; margin: 0; padding: 14px; border-radius: 10px; background: var(--sb-soft); font: 12px/1.55 ui-monospace, Menlo, monospace; white-space: pre; }

@keyframes sb-pulse { 50% { opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .sb-status i { animation: none !important; } .sb-card { transition: none; } }

/* ---- narrow screens: canvas first, then the palette and inspector ------------------------- */
@media (max-width: 1100px) {
  .sb-app { grid-template-columns: 220px minmax(0, 1fr); grid-template-areas: "top top" "palette canvas" "inspector inspector"; grid-template-rows: auto minmax(560px, 1fr) auto; height: auto; min-height: 100vh; }
  .sb-inspector { border-left: 0; border-top: 1px solid var(--sb-line); }
  .sb-canvas { height: 80vh; }
}
@media (max-width: 760px) {
  .sb-app { grid-template-columns: minmax(0, 1fr); grid-template-areas: "top" "canvas" "palette" "inspector"; }
  .sb-top { grid-template-columns: auto minmax(0, 1fr); grid-template-areas: "brand start" "mode end"; padding: 8px 16px; gap: 8px 10px; }
  .sb-top > .sb-brand { grid-area: brand; } .sb-top > .sb-top-start { grid-area: start; }
  .sb-top > .sb-mode { grid-area: mode; justify-self: start; } .sb-top > .sb-top-end { grid-area: end; }
  .sb-brand strong { display: none; }
  .sb-session .sb-field { flex: 1 1 160px; }
  .sb-session .sb-field select { flex: 1; max-width: none; min-width: 0; }
  .sb-session-use { margin-left: 0; }
  .sb-menu { width: min(340px, calc(100vw - 32px)); }
  .sb-palette { border-right: 0; border-top: 1px solid var(--sb-line); padding: 14px 16px; }
  .sb-inspector { padding: 14px 16px; }
  .sb-canvas { padding: 10px 16px; height: 86vh; }
}

/* A narrow editor (a phone or tablet preview, or a narrow window): one column, the pages first. */
@container sb-device (max-width: 760px) {
  taopix-editor.sb-editor { display: flex; flex-direction: column; overflow: auto; }
  taopix-editor.sb-editor > .sb-region { flex: none; }
  .sb-region[data-region="top"] { order: 0; gap: 6px; padding: 6px 8px; }
  .sb-region[data-region="center"] { order: 1; height: min(460px, 70cqh); min-height: 360px; }
  .sb-region[data-region="left"] { order: 2; }
  .sb-region[data-region="right"] { order: 3; }
  .sb-region[data-region="bottom"] { order: 4; }
  .sb-region[data-region="left"], .sb-region[data-region="right"] { max-height: 420px; }
  .sb-region[data-region="top"] > .sb-block[data-type="title"] { flex-basis: 100%; }
}

/* Toasts: bottom centre, the ink colour inverted so they read on either scheme. */
.sb-toasts { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); z-index: 1000; display: flex; flex-direction: column; align-items: center; gap: 8px; width: max-content; max-width: calc(100vw - 32px); pointer-events: none; }
.sb-toast { pointer-events: auto; display: flex; align-items: center; gap: 12px; max-width: 520px; padding: 10px 10px 10px 16px; border-radius: 12px; background: var(--sb-ink); color: var(--sb-panel); font: 500 13.5px/1.4 system-ui, sans-serif; box-shadow: 0 8px 24px rgba(16, 24, 40, .25); animation: sb-toast-in .18s ease-out; }
.sb-toast span { flex: 1; }
.sb-toast button { font: 600 13px system-ui, sans-serif; border: 0; border-radius: 8px; padding: 6px 10px; cursor: pointer; background: transparent; color: var(--sb-accent-soft); }
.sb-toast button:hover, .sb-toast button:focus-visible { background: color-mix(in srgb, var(--sb-panel) 14%, transparent); }
.sb-toast button:focus-visible { outline: 2px solid var(--sb-accent-soft); outline-offset: 1px; }
.sb-toast .sb-toast-close { color: var(--sb-panel); opacity: .75; font-size: 16px; line-height: 1; padding: 6px 8px; }
@keyframes sb-toast-in { from { opacity: 0; transform: translateY(8px); } }
@media (prefers-reduced-motion: reduce) { .sb-toast { animation: none; } }

/* Preview mode: the layout on its own, filling the window; the sandbox's controls are hidden. */
.sb-app[data-mode="preview"] { grid-template-columns: minmax(0, 1fr); grid-template-rows: minmax(0, 1fr); grid-template-areas: "canvas"; }
.sb-app[data-mode="preview"] > .sb-top, .sb-app[data-mode="preview"] > .sb-palette, .sb-app[data-mode="preview"] > .sb-inspector { display: none; }
.sb-app[data-mode="preview"] > .sb-canvas { padding: 0; }
.sb-app[data-mode="preview"] > .sb-canvas:not([data-device="desktop"]) { padding: 14px; }
.sb-exit-preview { position: fixed; top: 10px; left: 50%; transform: translate(-50%, -6px); z-index: 900; display: inline-flex; align-items: center; gap: 8px; padding: 7px 8px 7px 12px; border: 1px solid var(--sb-line); border-radius: 999px; background: color-mix(in srgb, var(--sb-panel) 92%, transparent); color: var(--sb-ink); font: 600 12.5px system-ui, sans-serif; box-shadow: var(--sb-shadow); cursor: pointer; opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; backdrop-filter: blur(6px); }
/* Out of the layout's way: shown on entering, near the top edge, or on keyboard focus. */
.sb-exit-preview.is-shown, .sb-exit-preview:focus-visible { opacity: 1; pointer-events: auto; transform: translate(-50%, 0); }
@media (prefers-reduced-motion: reduce) { .sb-exit-preview { transition: none; } }
.sb-exit-preview:focus-visible { outline: 2px solid var(--sb-accent); outline-offset: 2px; }
.sb-exit-preview kbd { font: 600 11px ui-monospace, monospace; padding: 1px 6px; border-radius: 6px; background: var(--sb-soft); color: var(--sb-muted); border: 1px solid var(--sb-line); }

/* When it shows: outside Arrange mode, by the editor's project state (as the exported CSS does). */
.sb-app:not([data-mode="arrange"]) taopix-editor:not([data-project="empty"]) .sb-block:has(> [data-show="empty"]),
.sb-app:not([data-mode="arrange"]) taopix-editor:is([data-project="empty"], :not([data-project])) .sb-block:has(> [data-show="open"]),
.sb-app:not([data-mode="arrange"]) taopix-editor:not([data-project="ready"]) .sb-block:has(> [data-show="ready"]),
.sb-app:not([data-mode="arrange"]) taopix-editor:not([data-project="error"]) .sb-block:has(> [data-show="error"]) { display: none; opacity: 0; }
.sb-block:has(> [data-fade]) { transition: opacity .35s ease, display .35s allow-discrete; }
@starting-style { .sb-block:has(> [data-fade]) { opacity: 0; } }
/* Arranging: every element shows; a conditional one says when it does. */
[data-mode="arrange"] .sb-block:has(> [data-show])::after { position: absolute; right: 6px; bottom: 6px; z-index: 31; padding: 2px 7px; border-radius: 999px; background: var(--sb-accent-soft); color: var(--sb-accent); font: 600 10.5px system-ui, sans-serif; pointer-events: none; }
[data-mode="arrange"] .sb-block:has(> [data-show="empty"])::after { content: 'Before a product'; }
[data-mode="arrange"] .sb-block:has(> [data-show="open"])::after { content: 'Once a product is chosen'; }
[data-mode="arrange"] .sb-block:has(> [data-show="ready"])::after { content: 'Once loaded'; }
[data-mode="arrange"] .sb-block:has(> [data-show="error"])::after { content: "If it can't open"; }
@media (prefers-reduced-motion: reduce) { .sb-block:has(> [data-fade]) { transition: none; } }

/* The inspector's lists (a toolbar's buttons, a panel's colours): ticks, ↑ ↓, folding when long. */
.sb-tokens { border: 0; margin: 0; padding: 0; min-width: 0; }
.sb-tokens legend { display: flex; align-items: center; gap: 8px; width: 100%; padding: 0; margin-bottom: 4px; font-size: 12.5px; font-weight: 600; }
.sb-tokens legend small { color: var(--sb-muted); font-weight: 500; }
.sb-tokens legend .sb-link { margin-left: auto; }
.sb-token-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.sb-token-list li { display: flex; align-items: center; gap: 6px; min-height: 30px; padding: 0 4px 0 6px; border-radius: 7px; }
.sb-token-list li:hover { background: var(--sb-soft); }
.sb-token-list .sb-check { flex: 1; font-family: ui-monospace, Menlo, monospace; font-size: 12px; }
.sb-token-move { display: inline-flex; gap: 2px; }
.sb-mini { width: 24px; height: 24px; padding: 0; border: 1px solid var(--sb-line); border-radius: 6px; background: var(--sb-panel); color: var(--sb-ink); font-size: 13px; line-height: 1; cursor: pointer; }
.sb-mini:hover:not(:disabled) { background: var(--sb-soft); }
.sb-mini:disabled { opacity: .35; cursor: default; }
.sb-colour-list input[type="color"] { width: 30px; height: 24px; padding: 0; border: 1px solid var(--sb-line); border-radius: 6px; background: none; }
.sb-colour-list code { flex: 1; font-size: 12px; }
.sb-fold > summary { display: flex; align-items: center; gap: 8px; min-height: 30px; padding: 0 6px; border-radius: 7px; cursor: pointer; font-size: 12.5px; color: var(--sb-muted); }
.sb-fold > summary:hover { background: var(--sb-soft); }
.sb-fold[open] > summary { margin-bottom: 4px; }
.sb-swatch-strip { display: inline-flex; }
.sb-swatch-strip i { width: 14px; height: 14px; margin-right: -4px; border-radius: 50%; border: 2px solid var(--sb-panel); box-shadow: 0 0 0 1px var(--sb-line); }