/* Viewer designs — design B is the viewer's look (embeds included); A and C load only with ?design=a|c.
   Same DOM and the same JS as the production viewer; only the layout and the
   chrome change. A = Atölye (docked workbench), B = Sahne (immersive stage),
   C = Levha (editorial figure plate). Palette and radii follow DESIGN.md. */

/* ---------- Preview strip (top, every design incl. "Mevcut") ---------- */
:root { --pv: 0px; }
html[data-design-preview] { --pv: 28px; }
#designStrip {
  position: fixed; top: 0; left: 0; right: 0; height: 28px; z-index: 100;
  display: flex; align-items: center; justify-content: center; gap: 4px;
  background: #202020; color: rgba(255, 255, 255, 0.6);
  font: 500 12px/1 Inter, system-ui, sans-serif;
}
#designStrip .ds-label { margin-right: 8px; }
#designStrip a {
  padding: 4px 10px; border-radius: 20px; color: rgba(255, 255, 255, 0.78); text-decoration: none; white-space: nowrap;
}
#designStrip a:hover { color: #fff; background: rgba(255, 255, 255, 0.12); }
#designStrip a[aria-current="true"] { background: #fff; color: #202020; }
#designStrip .ds-mode { display: inline-flex; margin-left: 10px; padding: 2px; border-radius: 20px; background: rgba(255, 255, 255, 0.1); }
#designStrip .ds-mode button { padding: 2px 9px; border: 0; border-radius: 20px; background: transparent; color: rgba(255, 255, 255, 0.7); font: inherit; cursor: pointer; }
#designStrip .ds-mode button[aria-pressed="true"] { background: rgba(255, 255, 255, 0.92); color: #202020; }
@media (max-width: 480px) { #designStrip .ds-label, #designStrip .ds-name { display: none; } #designStrip a { padding: 4px 6px; } #designStrip .ds-mode { margin-left: 4px; } #designStrip .ds-mode button { padding: 2px 6px; } }
html[data-design-preview] main.h-screen {
  margin-top: var(--pv); height: calc(100vh - var(--pv)); height: calc(100dvh - var(--pv));
}

/* Shared: labels/icons of the header toolbar buttons are Tailwind-toggled
   (svg `sm:hidden`, label `hidden sm:inline`); each design picks one. */
html[data-design] main > header { pointer-events: none; }

/* =====================================================================
   A — ATÖLYE: white top bar, docked left sidebar, grey technical canvas
   ===================================================================== */
html[data-design="a"] { --a-bar: 56px; --a-side: 360px; }
html[data-design="a"] body, html[data-design="a"] main { background: #fff; }

@media (min-width: 641px) {
  html[data-design="a"] main > header {
    height: var(--a-bar); padding: 0 16px !important; align-items: center;
    background: #fff; border-bottom: 1px solid #e8e8e8; pointer-events: auto; z-index: 32;
  }
  html[data-design="a"] #viewer {
    left: var(--a-side) !important; top: var(--a-bar) !important; right: 0 !important; bottom: 0 !important;
    width: auto !important; height: auto !important;
  }
  html[data-design="a"] #controlPanel {
    top: var(--a-bar); bottom: 0; left: 0; right: auto; width: var(--a-side); max-height: none;
    border-radius: 0; border: 0 !important; border-right: 1px solid #e8e8e8 !important;
    background: #fff !important; backdrop-filter: none; -webkit-backdrop-filter: none; padding: 0 !important;
  }
  html[data-design="a"] #panelToggle { display: none; }
  html[data-design="a"] #controlPanel[data-collapsed="true"] #panelBody {
    max-height: none !important; opacity: 1 !important; pointer-events: auto !important; overflow-y: auto;
  }
  html[data-design="a"] .viewer-panel-header { padding: 20px 20px 16px !important; border-bottom: 1px solid #e8e8e8 !important; }
  html[data-design="a"] #panelBody { padding: 0 20px 24px; }
  html[data-design="a"] .viewer-inline-qr { right: 20px; bottom: 20px; }
  html[data-design="a"] #infoPanel { top: var(--a-bar); }
  html[data-design="a"] .layers-panel:not(.is-embed) { top: calc(var(--a-bar) + 16px); right: 16px; max-height: calc(100% - var(--a-bar) - 32px); }
  html[data-design="a"] .viewer-free-watermark { top: calc(var(--a-bar) + 12px) !important; left: calc(50% + var(--a-side) / 2); }
}
html[data-design="a"] main > header > a[href="/"] {
  background: transparent !important; border: 0 !important; padding: 0 !important; color: #202020 !important; backdrop-filter: none;
}
html[data-design="a"] main > header > a[href="/"] .brand-mark { background: #202020; color: #fff; border-radius: 6px; }
html[data-design="a"] .viewer-toolbar { align-items: center; }
html[data-design="a"] .viewer-toolbar .viewer-tool-btn:not(.primary) {
  min-height: 36px; padding: 0 14px; border-radius: 20px; background: transparent; border: 1px solid transparent;
  color: #4d4d4d; font-size: 13px; font-weight: 500; backdrop-filter: none; -webkit-backdrop-filter: none;
}
html[data-design="a"] .viewer-toolbar .viewer-tool-btn:not(.primary):hover { background: #f5f5f5; color: #202020; transform: none; border-color: transparent; }
html[data-design="a"] .viewer-toolbar .viewer-tool-btn:not(.primary):is([aria-expanded="true"], .is-active) {
  background: #f5f5f5; color: #202020; box-shadow: inset 0 -2px 0 #202020;
}
html[data-design="a"] .viewer-toolbar .viewer-tool-btn.primary {
  min-height: 36px; padding: 0 16px; border-radius: 20px; background: #202020; border-color: #202020; color: #fff; font-size: 13px; font-weight: 500;
}
html[data-design="a"] .viewer-panel-header h1 {
  display: block !important; overflow: visible !important; -webkit-line-clamp: unset !important; word-break: normal !important;
  font-size: 24px; line-height: 1.15; letter-spacing: -0.02em; font-weight: 600; margin-top: 6px;
}
html[data-design="a"] .viewer-panel-header p:first-child::before {
  content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 8px; border-radius: 50%; background: #ff682c; vertical-align: 1px;
}

@media (max-width: 640px) {
  html[data-design="a"] { --a-bar-m: 100px; }
  html[data-design="a"] main > header {
    height: var(--a-bar-m); flex-wrap: wrap; align-content: flex-start; row-gap: 4px; padding: 8px 10px 0 !important;
    background: #fff; border-bottom: 1px solid #e8e8e8; pointer-events: auto; z-index: 32; align-items: center;
  }
  html[data-design="a"] main > header > a[href="/"] { height: 40px; align-items: center; }
  html[data-design="a"] main > header > a[href="/"] > span.font-serif { display: inline !important; }
  html[data-design="a"] .viewer-toolbar { order: 3; width: 100%; flex-wrap: nowrap !important; gap: 2px !important; justify-content: space-between; }
  html[data-design="a"] .viewer-toolbar .viewer-tool-btn { flex: 1 1 0; min-width: 0 !important; max-width: 44px; padding: 0 !important; }
  html[data-design="a"] #viewer { top: var(--a-bar-m) !important; height: calc(100% - var(--a-bar-m)) !important; }
  html[data-design="a"] #controlPanel {
    left: 0 !important; right: 0 !important; bottom: 0 !important; border-radius: 16px 16px 0 0; background: #fff !important;
    border: 1px solid #e8e8e8 !important; border-bottom: 0 !important; box-shadow: 0 -8px 24px rgba(32, 32, 32, 0.08);
    max-height: 52dvh; padding: 14px 16px calc(14px + env(safe-area-inset-bottom, 0px)) !important;
  }
  html[data-design="a"] .viewer-free-watermark { top: calc(var(--a-bar-m) + 10px) !important; }
}

/* =====================================================================
   B — SAHNE: full-bleed stage, a glass icon rail on the right that opens
   into a labelled menu on hover, and a matching compact tools panel on the
   left. Dark and light (data-viewer-bg) share the layout; tokens switch.
   ===================================================================== */
html[data-design="b"] {
  --b-glass: rgba(18, 18, 20, 0.62); --b-panel: rgba(16, 16, 18, 0.88);
  --b-line: rgba(255, 255, 255, 0.1); --b-line-2: rgba(255, 255, 255, 0.22);
  --b-ink: #fff; --b-ink-2: rgba(255, 255, 255, 0.74); --b-ink-3: rgba(255, 255, 255, 0.46);
  --b-hover: rgba(255, 255, 255, 0.08); --b-fill: rgba(255, 255, 255, 0.06);
  --b-on: rgba(255, 255, 255, 0.18); --b-seg-on: rgba(255, 255, 255, 0.16); --b-seg-shadow: 0 0 0 0 transparent;
  --b-cta: #fff; --b-cta-ink: #111; --b-range: #fff;
}
html[data-design="b"]:is([data-viewer-bg="light"], [data-viewer-bg="white"]) {
  --b-glass: rgba(255, 255, 255, 0.74); --b-panel: rgba(255, 255, 255, 0.92);
  --b-line: rgba(32, 32, 32, 0.1); --b-line-2: rgba(32, 32, 32, 0.24);
  --b-ink: #202020; --b-ink-2: rgba(32, 32, 32, 0.72); --b-ink-3: rgba(32, 32, 32, 0.5);
  --b-hover: rgba(32, 32, 32, 0.06); --b-fill: rgba(32, 32, 32, 0.04);
  --b-on: rgba(32, 32, 32, 0.09); --b-seg-on: #fff; --b-seg-shadow: 0 1px 2px rgba(32, 32, 32, 0.16);
  --b-cta: #202020; --b-cta-ink: #fff; --b-range: #202020;
}

/* Stage */
html[data-design="b"] body { background: #000; }
html[data-design="b"]:is([data-viewer-bg="light"], [data-viewer-bg="white"]) body { background: #fff; }
html[data-design="b"] .volumetric-grid { display: none; }
html[data-design="b"][data-viewer-bg="dark"] model-viewer {
  background: radial-gradient(ellipse 80% 70% at 50% 46%, #2b2b30 0, #131315 58%, #050506 100%) !important;
}
html[data-design="b"][data-viewer-bg="light"] model-viewer {
  background: radial-gradient(ellipse 80% 70% at 50% 46%, #ffffff 0, #f2f2f3 60%, #e2e2e4 100%) !important;
}
html[data-design="b"] main > header { top: 0; bottom: 0; padding: 20px !important; align-items: flex-start; }
html[data-design="b"] main > header > a[href="/"] {
  width: 44px; height: 44px; padding: 0 !important; justify-content: center; border-radius: 50% !important;
  background: var(--b-glass) !important; border: 1px solid var(--b-line) !important; color: var(--b-ink) !important;
  backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); pointer-events: auto;
}
html[data-design="b"] main > header > a[href="/"] > span:not(.brand-mark) { display: none !important; }
html[data-design="b"] main > header > a[href="/"] .brand-mark { background: transparent !important; color: var(--b-ink); }

/* Right rail: icons in a fixed column; hovering opens it into a labelled menu. */
html[data-design="b"] .viewer-toolbar {
  position: absolute; right: 20px; top: 20px;
  flex-direction: column; flex-wrap: nowrap !important; align-items: flex-end; gap: 2px !important;
  padding: 6px; border-radius: 28px; background: var(--b-glass);
  border: 1px solid var(--b-line); backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}
html[data-design="b"] .viewer-toolbar .viewer-tool-btn {
  position: relative; flex-direction: row-reverse; justify-content: flex-start; gap: 0;
  width: 44px; height: 44px; min-height: 44px; min-width: 44px; padding: 0 !important; border-radius: 22px;
  border: 0; background: transparent; color: var(--b-ink-2); box-shadow: none;
  font-size: 13px; font-weight: 500; letter-spacing: 0; white-space: nowrap; overflow: hidden;
  backdrop-filter: none; -webkit-backdrop-filter: none;
  transition: width 0.22s ease, background-color 0.15s ease, color 0.15s ease;
}
html[data-design="b"] .viewer-toolbar .viewer-tool-btn > svg { display: block !important; flex: 0 0 auto; width: 18px; height: 18px; margin: 0 13px; }
html[data-design="b"] .viewer-toolbar .viewer-tool-btn > span {
  display: block !important; flex: 1 1 auto; min-width: 0; overflow: hidden; padding-left: 16px; text-align: left;
  opacity: 0; transition: opacity 0.12s ease;
}
html[data-design="b"] .viewer-toolbar .viewer-tool-btn:hover { background: var(--b-hover); color: var(--b-ink); transform: none; border: 0; }
html[data-design="b"] .viewer-toolbar .viewer-tool-btn:is([aria-expanded="true"], .is-active) {
  background: var(--b-on) !important; border: 0 !important; color: var(--b-ink) !important;
}
html[data-design="b"] .viewer-toolbar .viewer-tool-btn.is-active { box-shadow: inset 0 0 0 1.5px #ff682c; }
html[data-design="b"] .viewer-toolbar .viewer-tool-btn.primary {
  order: -1; margin-bottom: 4px; background: var(--b-cta) !important; color: var(--b-cta-ink) !important; font-weight: 600;
}
@media (hover: hover) and (min-width: 641px) {
  html[data-design="b"] .viewer-toolbar:is(:hover, :focus-within) .viewer-tool-btn { width: 172px; }
  html[data-design="b"] .viewer-toolbar:is(:hover, :focus-within) .viewer-tool-btn > span { opacity: 1; transition-delay: 0.06s; }
}

/* While a window is open the rail stays slim (labels are in the tooltips) so it never covers the window beside it. */
@media (hover: hover) and (min-width: 641px) {
  html[data-design="b"] body:is(:has(.layers-panel:not([hidden])), :has(#infoPanel.open)) .viewer-toolbar:is(:hover, :focus-within) .viewer-tool-btn { width: 44px; }
  html[data-design="b"] body:is(:has(.layers-panel:not([hidden])), :has(#infoPanel.open)) .viewer-toolbar:is(:hover, :focus-within) .viewer-tool-btn > span { opacity: 0; }
}

/* Left panel: title lockup when folded, a compact glass tools sheet when open. */
html[data-design="b"] body:has(#controlPanel) #viewer { left: 0 !important; width: 100% !important; }
html[data-design="b"] #controlPanel {
  left: 28px; right: auto; bottom: 28px; width: min(384px, calc(100% - 140px)); max-height: calc(100dvh - var(--pv) - 120px);
  background: transparent !important; border: 1px solid transparent !important; padding: 0 !important; color: var(--b-ink);
  box-shadow: none; backdrop-filter: none !important; -webkit-backdrop-filter: none !important;
  transition: background-color 0.2s, padding 0.2s, border-color 0.2s;
}
html[data-design="b"] #controlPanel[data-collapsed="false"] {
  animation: b-panel-in 0.45s var(--b-ease) both;
  background: var(--b-panel) !important; border-color: var(--b-line) !important; padding: 18px 18px 6px !important;
  border-radius: 22px !important; box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(26px) !important; -webkit-backdrop-filter: blur(26px) !important;
}
html[data-design="b"] #controlPanel .viewer-panel-header {
  flex-direction: column; align-items: flex-start; gap: 10px; border-bottom: 0 !important; padding-bottom: 0;
}
html[data-design="b"] #controlPanel[data-collapsed="false"] .viewer-panel-header { padding-bottom: 14px; }
html[data-design="b"] .viewer-panel-header h1 {
  display: block !important; overflow: visible !important; -webkit-line-clamp: unset !important; word-break: normal !important;
  font-size: 34px; line-height: 1.05; letter-spacing: -0.025em; font-weight: 600; color: var(--b-ink);
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.6); transition: font-size 0.2s ease;
}
html[data-design="b"] #controlPanel[data-collapsed="false"] .viewer-panel-header h1 { font-size: 24px; text-shadow: none; }
html[data-design="b"]:is([data-viewer-bg="light"], [data-viewer-bg="white"]) .viewer-panel-header h1 { text-shadow: none; }
html[data-design="b"] #panelToggle {
  order: 2; flex-direction: row-reverse; width: auto; height: 34px; margin-top: 2px; padding: 0 12px 0 14px; gap: 8px;
  border-radius: 20px !important; font-size: 12px; font-weight: 500; color: var(--b-ink) !important;
  background: var(--b-glass) !important; border: 1px solid var(--b-line) !important;
  backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
}
html[data-design="b"] #panelToggle:hover { background: var(--b-on) !important; }
html[data-design="b"] #panelToggle::before { content: "Tools"; }
html[data-design="b"] #controlPanel[data-collapsed="false"] #panelToggle { position: absolute; top: 16px; right: 16px; margin: 0; background: var(--b-fill) !important; backdrop-filter: none; }
html[data-design="b"] #controlPanel[data-collapsed="false"] #panelToggle::before { content: "Close"; }
html[data-design="b"] #controlPanel[data-collapsed="false"] .viewer-panel-header > div { padding-right: 84px; }

@keyframes b-panel-in { from { opacity: 0; transform: translateY(14px) scale(0.98); } to { opacity: 1; transform: none; } }

/* Facts: one hairline strip instead of three boxes. */
html[data-design="b"] #controlPanel .viewer-meta-grid {
  display: flex !important; gap: 0 !important; margin-top: 0 !important; border: 1px solid var(--b-line); border-radius: 10px;
}
html[data-design="b"] #controlPanel .viewer-meta-grid:has(+ div:not(.viewer-tool-stack)) { border-radius: 10px 10px 0 0; }
html[data-design="b"] #controlPanel .viewer-meta-grid > div {
  flex: 1 1 0; min-width: 0; background: transparent !important; border-radius: 0 !important; padding: 7px 11px !important;
}
html[data-design="b"] #controlPanel .viewer-meta-grid > div + div { border-left: 1px solid var(--b-line); }
html[data-design="b"] #controlPanel :is(.viewer-meta-grid > div, .viewer-meta-grid + div:not(.viewer-tool-stack)) > p:first-child {
  font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--b-ink-3) !important;
}
html[data-design="b"] #controlPanel :is(.viewer-meta-grid > div, .viewer-meta-grid + div:not(.viewer-tool-stack)) > p + p {
  margin-top: 1px !important; font-size: 12.5px; font-weight: 600; color: var(--b-ink) !important;
}
html[data-design="b"] #controlPanel .viewer-meta-grid + div:not(.viewer-tool-stack) {
  display: flex; flex-wrap: wrap; align-items: baseline; column-gap: 10px; margin-top: 0 !important;
  background: transparent !important; border: 1px solid var(--b-line); border-top: 0; border-radius: 0 0 10px 10px !important; padding: 7px 11px !important;
}
html[data-design="b"] #controlPanel .viewer-meta-grid + div:not(.viewer-tool-stack) > p { margin: 0 !important; }
html[data-design="b"] #controlPanel .viewer-meta-grid + div:not(.viewer-tool-stack) > p:nth-child(3) { flex-basis: 100%; font-size: 11px; color: var(--b-ink-3) !important; }

/* Tool groups: hairline-separated rows, small-caps titles, text actions on the right. */
html[data-design="b"] #controlPanel .viewer-tool-stack { gap: 0 !important; margin-top: 6px !important; font-size: 12px; }
html[data-design="b"] #controlPanel .viewer-tool-stack > div:not(.b-group-body) { border-top: 1px solid var(--b-line) !important; padding: 12px 0 !important; }
html[data-design="b"] #controlPanel .viewer-tool-stack > div:not(.b-group-body):first-child { border-top: 0 !important; }
html[data-design="b"] #controlPanel .viewer-tool-heading {
  flex-wrap: wrap; row-gap: 6px; column-gap: 8px; min-height: 26px;
  color: var(--b-ink-3); font-size: 10.5px; font-weight: 600; letter-spacing: 0.1em;
}
html[data-design="b"] #controlPanel .viewer-tool-heading > div { gap: 2px !important; margin-left: auto; width: auto; justify-content: flex-end; }
html[data-design="b"] #controlPanel :is(.viewer-tool-heading button, .viewer-light-save button) {
  min-height: 26px; padding: 0 7px; border: 0; border-radius: 6px; background: transparent; color: var(--b-ink-2);
  font-size: 12px; font-weight: 500; letter-spacing: 0; text-transform: none; white-space: nowrap;
}
html[data-design="b"] #controlPanel :is(.viewer-tool-heading button, .viewer-light-save button):not(:disabled):hover { background: var(--b-hover); color: var(--b-ink); }
html[data-design="b"] #controlPanel :is(.viewer-auto-toggle, .viewer-animation-toggle)[aria-pressed="true"] { background: var(--b-on); color: var(--b-ink); }

/* Segmented controls: Background, Lighting presets, screenshot background. */
html[data-design="b"] #controlPanel :is([data-bg-options], [data-light-presets], .viewer-shot-bg-opts) {
  display: flex; flex-wrap: nowrap !important; gap: 0 !important; padding: 2px; border-radius: 8px; background: var(--b-fill); border: 1px solid var(--b-line);
}
html[data-design="b"] #controlPanel :is([data-bg-options], [data-light-presets], .viewer-shot-bg-opts) button {
  min-height: 24px; padding: 0 10px; border: 0; border-radius: 6px; background: transparent; color: var(--b-ink-2);
  font-size: 12px; font-weight: 500; box-shadow: none;
}
html[data-design="b"] #controlPanel :is([data-bg-options], [data-light-presets], .viewer-shot-bg-opts) button[aria-pressed="true"] {
  background: var(--b-seg-on); color: var(--b-ink); box-shadow: var(--b-seg-shadow);
}
html[data-design="b"] #controlPanel .viewer-light-tools .viewer-tool-heading { flex-direction: column; align-items: stretch; }
html[data-design="b"] #controlPanel .viewer-light-tools .viewer-tool-heading > [data-light-presets] { margin-left: 0; width: 100%; }
html[data-design="b"] #controlPanel [data-light-presets] button { flex: 1 1 0; padding: 0 4px; }

/* Buttons that do something: compact, square-ish, side by side. */
html[data-design="b"] #controlPanel :is(.viewer-shot-actions, .viewer-video-actions) { gap: 6px; margin-top: 8px; }
html[data-design="b"] #controlPanel .viewer-shot-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }
html[data-design="b"] #controlPanel :is(.viewer-shot-actions button, .viewer-video-actions button) {
  min-height: 32px; padding: 0 10px; border: 1px solid var(--b-line); border-radius: 8px; background: var(--b-fill);
  color: var(--b-ink); font-size: 12px; font-weight: 500;
}
html[data-design="b"] #controlPanel :is(.viewer-shot-actions button, .viewer-video-actions button):not(:disabled):hover { background: var(--b-hover); border-color: var(--b-line-2); }
html[data-design="b"] #controlPanel :is(.viewer-shot-actions button, .viewer-video-actions button):disabled { color: var(--b-ink-3); }
html[data-design="b"] #controlPanel :is(.viewer-video-actions button, .viewer-shot-actions [data-video-record]) { display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
html[data-design="b"] #controlPanel :is(.viewer-video-actions button, .viewer-shot-actions [data-video-record])::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #e5484d; }
html[data-design="b"] #controlPanel .viewer-shot-qr-toggle {
  display: inline-flex; margin: 10px 16px 0 0; gap: 6px; font-size: 12px; font-weight: 400; color: var(--b-ink-2);
}
html[data-design="b"] #controlPanel .viewer-shot-qr-toggle input { width: 14px; height: 14px; }
html[data-design="b"] #controlPanel .viewer-shot-bg { margin-top: 8px; }
html[data-design="b"] #controlPanel :is(.viewer-shot-grid, .viewer-shot-status):empty { display: none; }
html[data-design="b"] #controlPanel :is(.viewer-shot-status, .viewer-video-status, .viewer-media-status, .viewer-color-hint, .viewer-light-save) {
  margin-top: 8px; font-size: 11.5px; line-height: 1.4; color: var(--b-ink-3);
}
html[data-design="b"] #controlPanel .viewer-light-save { gap: 4px; }
html[data-design="b"] #controlPanel .viewer-light-save button { margin-left: -8px; }
html[data-design="b"] #controlPanel .viewer-light-save button + button { margin-left: 0; }

/* Colours: a row of dots (names stay in the tooltip and the accessible label). */
html[data-design="b"] #controlPanel .viewer-color-swatches { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px; margin-top: 8px; }
html[data-design="b"] #controlPanel :is(.viewer-color-swatch, .viewer-color-custom) {
  width: 20px; height: 20px; padding: 0; border: 0; border-radius: 50%; background: transparent; overflow: visible;
}
html[data-design="b"] #controlPanel :is(.viewer-color-swatch, .viewer-color-custom) > span { display: none; }
html[data-design="b"] #controlPanel .viewer-color-swatch i,
html[data-design="b"] #controlPanel .viewer-color-custom::before {
  width: 100%; height: 100%; border-radius: 50%; border: 1px solid var(--b-line-2);
}
html[data-design="b"] #controlPanel :is(.viewer-color-swatch, .viewer-color-custom):hover { transform: scale(1.12); }
html[data-design="b"] #controlPanel .viewer-color-swatch[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--b-panel), 0 0 0 3.5px var(--b-ink); }

/* Sliders */
html[data-design="b"] #controlPanel .viewer-light-sliders { gap: 12px; margin-top: 10px; }
html[data-design="b"] #controlPanel .viewer-light-sliders label { font-size: 11px; color: var(--b-ink-3); }
html[data-design="b"] #controlPanel input[type="range"] { accent-color: var(--b-range); height: 16px; }
html[data-design="b"] #controlPanel .viewer-rotation-tools label {
  grid-template-columns: 12px minmax(0, 1fr) 44px; gap: 10px; margin-top: 4px; font-size: 11px; font-weight: 600; color: var(--b-ink-3);
}
html[data-design="b"] #controlPanel .viewer-rotate-num {
  height: 24px; padding: 0 6px; font-size: 12px; border-radius: 6px; color: var(--b-ink); background: var(--b-fill); border-color: var(--b-line);
}

/* Groups: Appearance / Screen capture / Orientation, one open at a time (headers added by the B script). */
html[data-design="b"] {
  --b-accent: #ff682c; --b-ease: cubic-bezier(0.22, 1, 0.36, 1);
}
html[data-design="b"]:is([data-viewer-bg="light"], [data-viewer-bg="white"]) { --b-accent: #e5521a; }
html[data-design="b"] #controlPanel .viewer-tool-stack { margin-top: 10px !important; gap: 2px !important; }
html[data-design="b"] #controlPanel .viewer-tool-stack > .b-group-head {
  display: flex; align-items: center; justify-content: space-between; gap: 10px; width: 100%; min-height: 40px; padding: 0 12px;
  border: 0; border-radius: 10px; background: transparent; color: var(--b-accent); cursor: pointer;
  font: 700 12px/1 Inter, system-ui, sans-serif; letter-spacing: 0.08em; text-transform: uppercase; text-align: left;
  transition: background-color 0.2s ease;
}
html[data-design="b"] #controlPanel .b-group-head:hover { background: var(--b-hover); }
html[data-design="b"] #controlPanel .b-group-head[aria-expanded="true"] { background: var(--b-fill); }
html[data-design="b"] #controlPanel .b-group-title { display: inline-flex; align-items: center; gap: 8px; }
html[data-design="b"] #controlPanel .b-group-head.is-recording .b-group-title::after {
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: #e5484d; animation: b-rec 1.2s ease-in-out infinite;
}
html[data-design="b"] #controlPanel .b-group-head > svg { flex: 0 0 auto; width: 14px; height: 14px; transition: transform 0.4s var(--b-ease); }
html[data-design="b"] #controlPanel .b-group-head[aria-expanded="true"] > svg { transform: rotate(180deg); }

/* The sheet opens by height and its sections rise in one after another. */
html[data-design="b"] #controlPanel .b-group-body {
  display: grid; grid-template-rows: 0fr; visibility: hidden;
  transition: grid-template-rows 0.42s var(--b-ease), visibility 0s 0.42s;
}
html[data-design="b"] #controlPanel .b-group-body.is-open { grid-template-rows: 1fr; visibility: visible; transition: grid-template-rows 0.42s var(--b-ease), visibility 0s; }
html[data-design="b"] #controlPanel .b-group-inner { min-height: 0; overflow: hidden; padding: 0 12px; }
html[data-design="b"] #controlPanel .b-group-inner > [data-b-group] {
  border-top: 0 !important; padding: 8px 0 12px !important;
  opacity: 0; transform: translateY(-8px); filter: blur(3px);
  transition: opacity 0.2s ease, transform 0.2s ease, filter 0.2s ease;
}
html[data-design="b"] #controlPanel .b-group-body.is-open .b-group-inner > [data-b-group] {
  opacity: 1; transform: none; filter: none;
  transition: opacity 0.4s ease calc(0.1s + var(--b-i, 0) * 0.07s), transform 0.5s var(--b-ease) calc(0.1s + var(--b-i, 0) * 0.07s), filter 0.4s ease calc(0.1s + var(--b-i, 0) * 0.07s);
}
@keyframes b-rec { 50% { opacity: 0.35; } }
@media (prefers-reduced-motion: reduce) {
  html[data-design="b"] #controlPanel :is(.b-group-body, .b-group-inner > [data-b-group], .b-group-head > svg) { transition: none !important; }
}

/* Orange marks state, never fills a button (DESIGN.md). */
html[data-design="b"] #controlPanel :is([data-bg-options], [data-light-presets], .viewer-shot-bg-opts) button[aria-pressed="true"] {
  box-shadow: var(--b-seg-shadow), inset 0 -2px 0 #ff682c;
}
html[data-design="b"] #controlPanel input[type="range"] { accent-color: #ff682c; }
html[data-design="b"] #controlPanel .viewer-color-swatch[aria-pressed="true"] { box-shadow: 0 0 0 2px var(--b-panel), 0 0 0 3.5px #ff682c; }
html[data-design="b"] :is(#controlPanel, .viewer-toolbar, main > header) :focus-visible { outline: 2px solid #ff682c; outline-offset: 2px; }
html[data-design="b"] #controlPanel .b-progress { display: none; height: 2px; margin-top: 8px; border-radius: 2px; background: var(--b-fill); overflow: hidden; }
html[data-design="b"] #controlPanel .b-progress.is-on { display: block; }
html[data-design="b"] #controlPanel .b-progress > i { display: block; height: 100%; width: 0; background: #ff682c; transition: width 0.3s ease; }

/* Less noise: no greyed-out actions, fixed help lines as tooltips, four media thumbnails until asked. */
html[data-design="b"] #controlPanel .viewer-shot-tools .viewer-tool-heading button:disabled { display: none; }
html[data-design="b"] #controlPanel .b-quiet { display: none !important; }
html[data-design="b"] #controlPanel .viewer-media-group:not(.b-all) .viewer-media-grid > :nth-child(n+5) { display: none; }
html[data-design="b"] #controlPanel [data-shot-gallery][hidden] { display: none !important; }
html[data-design="b"] #controlPanel .viewer-shot-actions [data-video-record] { grid-column: 1 / -1; }
html[data-design="b"] #controlPanel [data-media-tools] > .viewer-tool-heading { display: none; }
html[data-design="b"] #controlPanel .viewer-media-kind { display: flex; align-items: baseline; justify-content: space-between; margin-top: 14px; color: var(--b-ink-3); }
html[data-design="b"] #controlPanel .viewer-media-kind + .viewer-media-grid { margin-top: 6px; }
html[data-design="b"] #controlPanel .viewer-media-clear { border: 0; background: transparent; padding: 0; font-size: 11px; font-weight: 500; letter-spacing: 0; text-transform: none; color: var(--b-ink-3); cursor: pointer; }
html[data-design="b"] #controlPanel .viewer-media-clear:hover { color: #ff682c; }
html[data-design="b"] #controlPanel .viewer-media-caption { position: absolute; left: 4px; bottom: 3px; right: 4px; font-size: 9px; font-weight: 600; color: #fff; padding: 1px 4px; border-radius: 4px; background: rgba(0,0,0,.6); right: auto; max-width: calc(100% - 8px); pointer-events: none; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
html[data-design="b"] #controlPanel .b-media-more {
  margin-top: 8px; min-height: 26px; padding: 0 8px 0 0; border: 0; background: transparent; color: var(--b-ink-2);
  font-size: 12px; font-weight: 500; cursor: pointer;
}
html[data-design="b"] #controlPanel .b-media-more:hover { color: var(--b-ink); }
html[data-design="b"] #controlPanel .b-media-more[hidden] { display: none; }
html[data-design="b"] #controlPanel[data-collapsed="false"] .viewer-panel-header > div > p:first-child { display: none; }
html[data-design="b"] #panelBody { scrollbar-width: thin; scrollbar-color: transparent transparent; }
html[data-design="b"] #panelBody:hover { scrollbar-color: var(--b-line-2) transparent; }
html[data-design="b"] #panelBody::-webkit-scrollbar { width: 4px; }
html[data-design="b"] #panelBody::-webkit-scrollbar-thumb { background: transparent; }
html[data-design="b"] #panelBody:hover::-webkit-scrollbar-thumb { background: var(--b-line-2); }

/* Floating extras */
html[data-design="b"] .viewer-inline-qr { right: 20px; bottom: 20px; padding: 8px; border-radius: 16px; }
html[data-design="b"] .viewer-inline-qr img { width: 76px; height: 76px; }
html[data-design="b"] .layers-panel:not(.is-embed) { top: 20px; right: 84px; max-height: calc(100% - 40px); }
html[data-design="b"] .viewer-free-watermark { top: 24px !important; }

@media (max-width: 640px) {
  html[data-design="b"] main > header { padding: 12px !important; }
  html[data-design="b"] .viewer-toolbar { right: 10px; padding: 5px; }
  html[data-design="b"] .viewer-toolbar .viewer-tool-btn { width: 40px; height: 40px; min-height: 40px; min-width: 40px; font-size: 0; }
  html[data-design="b"] .viewer-toolbar .viewer-tool-btn > svg { margin: 0 11px; }
  html[data-design="b"] .viewer-toolbar .viewer-tool-btn > span { display: none !important; }
  /* While the tools sheet is open the rail would show through the glass. */
  html[data-design="b"] body:has(#controlPanel[data-collapsed="false"]) .viewer-toolbar { opacity: 0; pointer-events: none; }
  html[data-design="b"] #controlPanel {
    left: 16px !important; right: 68px !important; bottom: calc(16px + env(safe-area-inset-bottom, 0px)) !important;
    width: auto !important; max-height: 58dvh; padding: 0 !important; border-radius: 0;
  }
  html[data-design="b"] #controlPanel[data-collapsed="false"] {
    right: 12px !important; left: 12px !important; bottom: calc(12px + env(safe-area-inset-bottom, 0px)) !important;
    padding: 16px 16px 4px !important; border-radius: 20px !important;
  }
  html[data-design="b"] .viewer-panel-header h1 { font-size: 28px; }
  html[data-design="b"] #controlPanel[data-collapsed="false"] .viewer-panel-header h1 { font-size: 20px; }
  html[data-design="b"] #controlPanel .viewer-tool-heading > div { width: auto; justify-content: flex-end; }
  html[data-design="b"] #controlPanel .viewer-rotation-tools label { grid-template-columns: 12px minmax(0, 1fr) 44px; gap: 10px; }
  html[data-design="b"] #controlPanel .viewer-tool-stack > .b-group-head { min-height: 46px; }
}

/* Windows opened from the rail (Scenes, Layers, Slice, Info, QR, label form):
   the same glass sheet, orange small-caps titles and quiet text actions as the
   tools panel. Prefix keeps them above the plain light/dark rules. */
html[data-design="b"] main > header:has(.viewer-toolbar:is(:hover, :focus-within)) { z-index: 37; }
html[data-design="b"] .viewer-toolbar:is(:hover, :focus-within) { background: var(--b-panel); }
html[data-design="b"][data-viewer-bg] .layers-panel:not(.is-embed) {
  width: 344px; background: var(--b-panel); color: var(--b-ink); border: 1px solid var(--b-line); border-radius: 22px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18); backdrop-filter: blur(26px); -webkit-backdrop-filter: blur(26px);
  animation: b-panel-in 0.4s var(--b-ease) both;
}
html[data-design="b"][data-viewer-bg] .layers-head { flex-wrap: nowrap; padding: 16px 14px 8px 18px; }
html[data-design="b"][data-viewer-bg] .layers-head h2 {
  color: var(--b-accent); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; white-space: nowrap;
}
html[data-design="b"][data-viewer-bg] .layers-head h2 .font-normal,
html[data-design="b"][data-viewer-bg] .layers-head h2 [data-scenes-count] { color: var(--b-ink-3); letter-spacing: 0; }
html[data-design="b"][data-viewer-bg] .layers-head-actions { flex-wrap: nowrap; align-items: center; gap: 2px; }
html[data-design="b"][data-viewer-bg] .layers-head-actions button {
  white-space: nowrap; padding: 5px 9px; border: 0; border-radius: 10px; background: transparent;
  color: var(--b-ink-2); font-size: 12px; font-weight: 600;
}
html[data-design="b"][data-viewer-bg] .layers-head-actions button:hover:not(:disabled) { background: var(--b-hover); color: var(--b-ink); }
html[data-design="b"][data-viewer-bg] .layers-head-actions button:disabled { opacity: 0.4; }
html[data-design="b"][data-viewer-bg] .layers-head-actions button[aria-label^="Close"] {
  width: 28px; height: 28px; padding: 0; margin-left: 2px; border-radius: 50%; background: var(--b-fill);
  color: var(--b-ink-2); font-size: 16px; line-height: 1;
}
html[data-design="b"][data-viewer-bg] .layers-list { padding: 0 8px 8px; }
html[data-design="b"][data-viewer-bg] .layer-row:hover,
html[data-design="b"][data-viewer-bg] .scene-row:hover { background: var(--b-hover); }
html[data-design="b"][data-viewer-bg] .scene-row.is-active { background: rgba(255, 104, 44, 0.14); }
html[data-design="b"][data-viewer-bg] .layer-eye {
  border: 0; border-radius: 50%; background: var(--b-fill); color: var(--b-ink);
}
html[data-design="b"][data-viewer-bg] .layer-eye[aria-pressed="false"] { color: var(--b-ink-3); }
html[data-design="b"][data-viewer-bg] .layer-swatch { border-color: var(--b-line-2); }
html[data-design="b"][data-viewer-bg] .layer-volume,
html[data-design="b"][data-viewer-bg] .layer-count,
html[data-design="b"][data-viewer-bg] .scene-desc,
html[data-design="b"][data-viewer-bg] .layers-note,
html[data-design="b"][data-viewer-bg] .layers-save span,
html[data-design="b"][data-viewer-bg] .section-pos { color: var(--b-ink-3); }
html[data-design="b"][data-viewer-bg] .layers-finish,
html[data-design="b"][data-viewer-bg] .layers-note,
html[data-design="b"][data-viewer-bg] .layers-save,
html[data-design="b"][data-viewer-bg] .scene-foot,
html[data-design="b"][data-viewer-bg] .scene-form { border-color: var(--b-line); }
html[data-design="b"][data-viewer-bg] .layers-finish { padding: 12px 18px 14px; }
html[data-design="b"][data-viewer-bg] .layers-finish-head { font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--b-accent); }
html[data-design="b"][data-viewer-bg] .layers-finish-head select {
  text-transform: none; letter-spacing: 0; font-weight: 500; color: var(--b-ink); background: var(--b-fill); border: 1px solid var(--b-line);
}
html[data-design="b"][data-viewer-bg] .layers-finish-presets { gap: 4px; }
html[data-design="b"][data-viewer-bg] .layers-finish-presets button {
  border: 0; background: var(--b-fill); color: var(--b-ink-2); font-weight: 500; padding: 5px 11px;
}
html[data-design="b"][data-viewer-bg] .layers-finish-presets button:hover { background: var(--b-hover); color: var(--b-ink); }
html[data-design="b"][data-viewer-bg] .layers-finish-presets button[aria-pressed="true"] { background: var(--b-accent); color: #fff; }
html[data-design="b"][data-viewer-bg] .layers-save button { background: var(--b-cta); color: var(--b-cta-ink); border-color: transparent; }
/* Scenes: quiet text actions instead of a pill for every verb. */
html[data-design="b"][data-viewer-bg] .scene-actions { gap: 0; margin: 4px -4px 0; }
html[data-design="b"][data-viewer-bg] .scene-actions button,
html[data-design="b"][data-viewer-bg] .scene-actions a {
  padding: 2px 5px; border: 0; border-radius: 8px; background: transparent; color: var(--b-ink-3); font-weight: 500; font-size: 11px;
}
html[data-design="b"][data-viewer-bg] .scene-actions button:hover:not(:disabled),
html[data-design="b"][data-viewer-bg] .scene-actions a:hover { background: var(--b-hover); color: var(--b-ink); }
html[data-design="b"][data-viewer-bg] .scene-actions > :last-child:hover { color: #ff6b5e; }
html[data-design="b"][data-viewer-bg] .scene-foot, html[data-design="b"][data-viewer-bg] .scene-form { padding-left: 18px; padding-right: 18px; }
html[data-design="b"][data-viewer-bg] .scene-foot button,
html[data-design="b"][data-viewer-bg] .scene-form .scene-save { background: var(--b-accent); color: #fff; padding: 7px 16px; border: 0; }
html[data-design="b"][data-viewer-bg] .scene-form button:not(.scene-save) { background: var(--b-fill); color: var(--b-ink-2); border: 0; }
html[data-design="b"][data-viewer-bg] .scene-form input,
html[data-design="b"][data-viewer-bg] .scene-form textarea,
html[data-design="b"][data-viewer-bg] #annotateForm input,
html[data-design="b"][data-viewer-bg] #annotateForm textarea {
  background: var(--b-fill); border: 1px solid var(--b-line); color: var(--b-ink); border-radius: 10px;
}
/* Slice */
html[data-design="b"][data-viewer-bg] .section-body { padding: 0 18px 14px; }
html[data-design="b"][data-viewer-bg] .section-axes { gap: 4px; }
html[data-design="b"][data-viewer-bg] .section-axes button {
  border: 0; border-radius: 12px; background: var(--b-fill); color: var(--b-ink-2); font-weight: 600;
}
html[data-design="b"][data-viewer-bg] .section-axes button:hover { background: var(--b-hover); color: var(--b-ink); }
html[data-design="b"][data-viewer-bg] .section-axes button[aria-pressed="true"] { background: var(--b-accent); color: #fff; }
html[data-design="b"][data-viewer-bg] .section-readout { color: var(--b-ink); }
html[data-design="b"][data-viewer-bg] .section-pos input { accent-color: var(--b-accent); }
html[data-design="b"][data-viewer-bg] .slice-title { color: var(--b-accent); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; }
html[data-design="b"][data-viewer-bg] .slice-actions button {
  border: 0; border-radius: 10px; background: var(--b-fill); color: var(--b-ink-2); font-weight: 600;
}
html[data-design="b"][data-viewer-bg] .slice-actions button:hover { background: var(--b-hover); color: var(--b-ink); }
html[data-design="b"][data-viewer-bg] .slice-actions button[aria-pressed="true"] { background: var(--b-accent); color: #fff; }
html[data-design="b"][data-viewer-bg] .slice-readout { color: var(--b-ink); }
html[data-design="b"][data-viewer-bg] .slice-hint { color: var(--b-ink-3); }
/* Label form */
html[data-design="b"][data-viewer-bg] #annotateForm {
  background: var(--b-panel); border: 1px solid var(--b-line); border-radius: 18px; padding: 16px 18px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18); backdrop-filter: blur(26px); -webkit-backdrop-filter: blur(26px);
}
html[data-design="b"][data-viewer-bg] #annotateForm label { color: var(--b-ink-3); }
html[data-design="b"][data-viewer-bg] #annotateForm button { border-radius: 12px; padding: 6px 14px; }
html[data-design="b"][data-viewer-bg] #annotateForm .ann-save { background: var(--b-accent); }
html[data-design="b"][data-viewer-bg] #annotateForm .ann-cancel { background: var(--b-fill); color: var(--b-ink-2); }
/* Info: a floating card beside the rail instead of a full-height drawer. */
html[data-design="b"][data-viewer-bg] #infoPanel {
  top: 20px !important; right: 84px !important; bottom: auto !important; left: auto; width: 380px !important;
  max-height: calc(100% - 40px); padding: 20px 22px !important; border: 1px solid var(--b-line) !important;
  border-radius: 22px; background: var(--b-panel) !important; color: var(--b-ink) !important;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.18); backdrop-filter: blur(26px); -webkit-backdrop-filter: blur(26px);
  scrollbar-width: thin;
}
html[data-design="b"][data-viewer-bg] #infoPanel [class*="text-white"] { color: var(--b-ink-2) !important; }
html[data-design="b"][data-viewer-bg] #infoPanel [class*="text-white/4"] { color: var(--b-ink-3) !important; }
html[data-design="b"][data-viewer-bg] #infoPanel [class*="border-white/"] { border-color: var(--b-line) !important; }
html[data-design="b"][data-viewer-bg] #infoPanel p.uppercase { color: var(--b-accent) !important; font-weight: 700; letter-spacing: 0.08em; font-size: 12px; }
html[data-design="b"][data-viewer-bg] #infoPanel h2 { font-family: inherit; font-size: 22px; letter-spacing: -0.02em; color: var(--b-ink); }
html[data-design="b"][data-viewer-bg] #infoPanel h3 { font-size: 16px; line-height: 1.35; color: var(--b-ink); }
html[data-design="b"][data-viewer-bg] #infoPanel h4 { color: var(--b-ink) !important; }
html[data-design="b"][data-viewer-bg] #infoPanel a { color: var(--b-ink) !important; text-decoration-color: var(--b-accent); }
html[data-design="b"][data-viewer-bg] #closeInfo { border: 0 !important; border-radius: 50% !important; background: var(--b-fill) !important; color: var(--b-ink-2) !important; }
/* Layers save row: the button on one line, the hint beside it on one line. */
html[data-design="b"][data-viewer-bg] .layers-save { flex-wrap: nowrap; gap: 12px; padding: 12px 18px 14px; }
html[data-design="b"][data-viewer-bg] .layers-save button {
  flex: none; white-space: nowrap; padding: 7px 16px; border: 0; border-radius: 999px; background: var(--b-accent); color: #fff;
}
html[data-design="b"][data-viewer-bg] .layers-save button:hover:not(:disabled) { filter: brightness(1.08); }
html[data-design="b"][data-viewer-bg] .layers-save span { flex: 1 1 auto; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
/* "Edit model" / publish link under the title: an orange-text button. */
html[data-design="b"] #controlPanel .viewer-publish-cta {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 8px; padding: 6px 14px; border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--b-accent) 45%, transparent); background: var(--b-glass);
  color: var(--b-accent) !important; font-size: 12.5px; font-weight: 600; text-decoration: none;
  backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); transition: background-color 0.15s, border-color 0.15s;
}
html[data-design="b"] #controlPanel .viewer-publish-cta:hover {
  background: color-mix(in srgb, var(--b-accent) 14%, var(--b-glass)); border-color: var(--b-accent);
}
/* QR / AR dialogs sit in the middle of the window, both ways. */
html[data-design="b"] #qrModal:not(.hidden) { display: flex; align-items: center; justify-content: center; }
html[data-design="b"] #qrModal > div { margin: 0; }
/* Model gallery (slider window) and split view. */
html[data-design="b"] .viewer-toolbar { max-height: calc(100% - 40px); overflow-y: auto; scrollbar-width: none; }
html[data-design="b"] .viewer-toolbar::-webkit-scrollbar { display: none; }
html[data-design="b"][data-viewer-bg] .gallery-panel:not(.is-embed) { width: 420px; }
html[data-design="b"] .b-gal-track {
  display: flex; gap: 10px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 4px 18px 14px; scrollbar-width: none; outline: none;
}
html[data-design="b"] .b-gal-track::-webkit-scrollbar { display: none; }
html[data-design="b"] .b-gal-card {
  position: relative; flex: 0 0 172px; display: flex; flex-direction: column; gap: 2px; padding: 0 0 10px; text-align: left;
  scroll-snap-align: start; overflow: hidden; border-radius: 16px; border: 1px solid var(--b-line); background: var(--b-fill);
  color: var(--b-ink); cursor: pointer; transition: border-color 0.18s, transform 0.25s var(--b-ease), background-color 0.18s;
}
html[data-design="b"] .b-gal-card:hover { background: var(--b-hover); transform: translateY(-2px); }
html[data-design="b"] .b-gal-card:focus-visible { outline: 2px solid var(--b-accent); outline-offset: 2px; }
html[data-design="b"] .b-gal-card.is-current { border-color: var(--b-accent); }
html[data-design="b"] .b-gal-thumb {
  display: grid; place-items: center; aspect-ratio: 4 / 3; margin-bottom: 8px; background: var(--b-hover); color: var(--b-ink-3);
}
html[data-design="b"] .b-gal-thumb img { width: 100%; height: 100%; object-fit: cover; }
html[data-design="b"] .b-gal-name, html[data-design="b"] .b-gal-proj { display: block; padding: 0 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
html[data-design="b"] .b-gal-name { font-size: 13px; font-weight: 600; }
html[data-design="b"] .b-gal-proj { font-size: 11.5px; color: var(--b-ink-3); }
html[data-design="b"] .b-gal-badge {
  position: absolute; top: 8px; left: 8px; padding: 2px 9px; border-radius: 999px; background: var(--b-accent); color: #fff;
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
}
html[data-design="b"] .b-gal-note { padding: 8px 4px; font-size: 12.5px; color: var(--b-ink-3); }
html[data-design="b"] .b-gal-foot { padding: 0 18px 14px; }
html[data-design="b"] .b-gal-foot button {
  padding: 6px 0; border: 0; background: none; color: var(--b-accent); font-size: 12.5px; font-weight: 600; cursor: pointer;
}
html[data-design="b"] .b-gal-foot button:hover { text-decoration: underline; text-underline-offset: 3px; }
html[data-design="b"] .viewer-toolbar .viewer-tool-btn.is-active:is(#splitBtn) { box-shadow: inset 0 0 0 1.5px var(--b-accent); }

/* Split: the stage keeps the left half, a second model fills the right half. */
html[data-design="b"].b-split body:has(#controlPanel) #viewer, html[data-design="b"].b-split #viewer { width: 50% !important; }
html[data-design="b"] #splitPane {
  position: absolute; top: 0; right: 0; bottom: 0; width: 50%; z-index: 20; overflow: hidden; background: #0c0c0e;
  border-left: 1px solid var(--b-line-2);
}
html[data-design="b"]:is([data-viewer-bg="light"], [data-viewer-bg="white"]) #splitPane { background: #f4f4f5; }
html[data-design="b"] #splitPane[hidden] { display: none; }
html[data-design="b"] #splitPane iframe { width: calc(100% - 84px); height: 100%; border: 0; display: block; }
html[data-design="b"].b-split .viewer-inline-qr { display: none !important; }
html[data-design="b"] .b-split-bar {
  position: absolute; bottom: 20px; right: 104px; z-index: 4; display: flex; align-items: center; gap: 2px; padding: 4px 4px 4px 14px;
  border-radius: 999px; background: var(--b-panel); border: 1px solid var(--b-line); color: var(--b-ink);
  backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px); max-width: calc(100% - 120px);
}
html[data-design="b"] .b-split-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-right: 6px; font-size: 12.5px; font-weight: 600; }
html[data-design="b"] .b-split-bar button {
  flex: none; padding: 5px 10px; border: 0; border-radius: 999px; background: transparent; color: var(--b-accent); font-size: 12px; font-weight: 600; cursor: pointer;
}
html[data-design="b"] .b-split-bar button:hover { background: var(--b-hover); }
html[data-design="b"] .b-split-bar button[data-split-close] { width: 28px; height: 28px; padding: 0; background: var(--b-fill); color: var(--b-ink-2); font-size: 16px; }
html[data-design="b"] .b-split-pick {
  position: absolute; inset: 0; z-index: 3; overflow-y: auto; padding: 84px 92px 28px 28px; background: inherit; color: var(--b-ink);
}
html[data-design="b"] .b-split-pick[hidden] { display: none; }
html[data-design="b"] .b-split-title { margin-bottom: 14px; color: var(--b-accent); font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
html[data-design="b"] .b-split-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
html[data-design="b"] .b-split-grid .b-gal-card { flex: none; }
@media (max-width: 640px) {
  html[data-design="b"][data-viewer-bg] .gallery-panel:not(.is-embed) { width: auto; }
  html[data-design="b"] .b-gal-card { flex-basis: 150px; }
  html[data-design="b"].b-split body:has(#controlPanel) #viewer, html[data-design="b"].b-split #viewer { width: 100% !important; height: 50% !important; }
  html[data-design="b"] #splitPane { top: 50%; width: 100%; border-left: 0; border-top: 1px solid var(--b-line-2); }
  html[data-design="b"] #splitPane iframe { width: calc(100% - 60px); }
  html[data-design="b"] .b-split-bar { bottom: 12px; right: 68px; }
  html[data-design="b"].b-split #controlPanel { display: none; }
  html[data-design="b"] .b-split-name { display: none; }
  html[data-design="b"] .b-split-bar { padding-left: 4px; }
  html[data-design="b"] .b-split-grid { grid-template-columns: repeat(auto-fill, minmax(128px, 1fr)); }
  html[data-design="b"] .b-split-pick { padding: 64px 64px 16px 16px; }
}

/* QR dialog */
html[data-design="b"][data-viewer-bg="dark"] #qrModal { background: rgba(0, 0, 0, 0.5); }
html[data-design="b"][data-viewer-bg]:is([data-viewer-bg="light"], [data-viewer-bg="white"]) #qrModal { background: rgba(255, 255, 255, 0.5); }
html[data-design="b"][data-viewer-bg] #qrModal > div {
  background: var(--b-panel); color: var(--b-ink); border: 1px solid var(--b-line); border-radius: 22px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28); backdrop-filter: blur(26px); -webkit-backdrop-filter: blur(26px);
}
html[data-design="b"][data-viewer-bg] #qrModal [data-qr-eyebrow] { color: var(--b-accent); font-weight: 700; letter-spacing: 0.08em; font-size: 12px; }
html[data-design="b"][data-viewer-bg] #qrModal [data-qr-note] { color: var(--b-ink-3); }
html[data-design="b"][data-viewer-bg] #qrModal [data-qr-image] { border-radius: 16px; box-shadow: inset 0 0 0 1px var(--b-line); }
html[data-design="b"][data-viewer-bg] #closeQr { border: 0; background: var(--b-fill); color: var(--b-ink-2); border-radius: 12px; }
html[data-design="b"][data-viewer-bg] #closeQr:hover { background: var(--b-hover); color: var(--b-ink); }
@media (max-width: 640px) {
  html[data-design="b"][data-viewer-bg] .layers-panel:not(.is-embed) { width: auto; top: auto; right: 12px; }
  /* The rail would sit on top of the sheet; each window has its own close button. */
  html[data-design="b"] body:is(:has(.layers-panel:not([hidden])), :has(#infoPanel.open)) .viewer-toolbar { opacity: 0; pointer-events: none; }
  html[data-design="b"][data-viewer-bg] #infoPanel { top: auto !important; right: 12px !important; left: 12px; bottom: 12px !important; width: auto !important; max-height: 70dvh; }
}

/* Embeds (?embed=1) wear B: the top bar is B's glass pill, the brand chip and the title
   lockup follow the theme. The split view's second pane (&pane=1) drops both, since its
   name already shows in the split bar. */
html[data-embed] main > header { justify-content: space-between; }
html[data-pane] main > header > div:first-child,
html[data-pane] [data-embed-title] { display: none !important; }
html[data-pane] main > header { justify-content: flex-end; }
html[data-embed] main > header > div:first-child {
  height: 36px; padding: 0 12px 0 5px !important; border-radius: 18px !important; background: var(--b-glass) !important;
  border: 1px solid var(--b-line) !important; backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}
html[data-embed] main > header > div:first-child .font-serif:not(.brand-mark) { color: var(--b-ink) !important; }
html[data-embed] main > header > div:first-child .brand-mark { border-radius: 50% !important; }
html[data-embed] [data-embed-title] { filter: none; }
html[data-embed] [data-embed-title] p:first-child { color: var(--b-accent) !important; font-weight: 700; letter-spacing: 0.08em; font-size: 11px; }
html[data-embed] [data-embed-title] h1 { color: var(--b-ink) !important; }
html[data-embed] [data-embed-title] p:last-child { color: var(--b-ink-3) !important; }
html[data-embed] main > header > div:last-child {
  gap: 2px !important; padding: 5px; border-radius: 24px; background: var(--b-glass);
  border: 1px solid var(--b-line); backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}
html[data-embed] main > header .viewer-tool-btn {
  height: 36px; min-height: 36px; padding: 0 14px !important; border-radius: 18px; border: 0;
  background: transparent; color: var(--b-ink-2); box-shadow: none; font-size: 12.5px !important; font-weight: 500;
  backdrop-filter: none; -webkit-backdrop-filter: none; transform: none;
}
html[data-embed] main > header .viewer-tool-btn:hover { background: var(--b-hover); color: var(--b-ink); transform: none; border: 0; }
html[data-embed] main > header .viewer-tool-btn:is([aria-expanded="true"], [aria-pressed="true"], .is-active) {
  background: var(--b-on) !important; border: 0 !important; color: var(--b-ink) !important;
}
html[data-embed] main > header .viewer-tool-btn.primary { background: var(--b-cta) !important; color: var(--b-cta-ink) !important; font-weight: 600; }

/* White label (embed settings, plan feature embed_white_label): no AcademicAR brand chip,
   Free-preview badge, "publish your own" link or QR card. The brand chip keeps its space so the
   toolbar stays where it is. */
html[data-embed-nobrand] main > header > :is(div:first-child, a[href="/"]) { visibility: hidden; }
html[data-embed-nobrand] :is(.viewer-free-watermark, .viewer-publish-cta, .viewer-inline-qr) { display: none !important; }

/* =====================================================================
   C — LEVHA: ivory page, framed figure plate, caption column, bottom dock
   ===================================================================== */
html[data-design="c"] { --c-col: 340px; }
html[data-design="c"] body, html[data-design="c"] main { background: #ebe6dd; }
html[data-design="c"] .volumetric-grid { display: none; }
html[data-design="c"] main > header > a[href="/"] {
  background: transparent !important; border: 0 !important; padding: 0 !important; color: #202020 !important;
  backdrop-filter: none; pointer-events: auto;
}
html[data-design="c"] main > header > a[href="/"] .brand-mark { background: #202020; color: #fff; border-radius: 50%; }
html[data-design="c"] .viewer-toolbar {
  pointer-events: auto; flex-wrap: nowrap !important; align-items: center; gap: 2px; padding: 6px 8px;
  background: #fff; border: 1px solid #202020; border-radius: 30px;
}
html[data-design="c"] .viewer-toolbar .viewer-tool-btn:not(.primary) {
  flex-direction: column; gap: 3px; min-width: 40px; min-height: 48px; padding: 6px 10px; border-radius: 22px;
  background: transparent; border: 0; color: #4d4d4d; font-size: 11px; font-weight: 500; backdrop-filter: none; -webkit-backdrop-filter: none;
}
html[data-design="c"] .viewer-toolbar .viewer-tool-btn { flex-direction: column; gap: 3px; min-width: 40px; min-height: 48px; border-radius: 22px; font-size: 11px; font-weight: 500; }
html[data-design="c"] .viewer-toolbar .viewer-tool-btn > svg { display: block !important; width: 18px; height: 18px; }
html[data-design="c"] .viewer-toolbar .viewer-tool-btn > span { display: block !important; line-height: 1; }
html[data-design="c"] .viewer-toolbar .viewer-tool-btn:not(.primary):hover { background: #f5f5f5; color: #202020; transform: none; }
html[data-design="c"] .viewer-toolbar .viewer-tool-btn:not(.primary):is([aria-expanded="true"], .is-active) { background: #f5f5f5; color: #202020; box-shadow: inset 0 -2px 0 #ff682c; }
html[data-design="c"] .viewer-toolbar .viewer-tool-btn.primary { padding: 6px 14px; background: #202020 !important; border-color: #202020; color: #fff !important; }
@media (min-width: 641px) {
  html[data-design="c"] main > header {
    top: auto; bottom: 16px; left: 24px; right: 24px; height: 60px; padding: 0 !important; align-items: center; justify-content: center;
  }
  html[data-design="c"] main > header > a[href="/"] { position: absolute; left: 0; top: 50%; transform: translateY(-50%); }
  html[data-design="c"] #viewer {
    left: 24px !important; top: 24px !important; right: calc(var(--c-col) + 48px) !important; bottom: 92px !important;
    width: auto !important; height: auto !important; border: 1px solid #202020; border-radius: 8px;
  }
  html[data-design="c"] #controlPanel {
    top: 24px; right: 24px; bottom: 92px; left: auto; width: var(--c-col); max-height: none;
    border-radius: 8px; background: #fff !important; border: 1px solid #202020 !important; padding: 20px !important;
    backdrop-filter: none; -webkit-backdrop-filter: none;
  }
  html[data-design="c"] #panelToggle { display: none; }
  html[data-design="c"] #controlPanel[data-collapsed="true"] #panelBody {
    max-height: none !important; opacity: 1 !important; pointer-events: auto !important; overflow-y: auto;
  }
  html[data-design="c"] .viewer-inline-qr {
    left: 40px; right: auto; bottom: 108px; padding: 6px; border-radius: 6px; background: #fff !important; border: 1px solid #202020 !important;
  }
  html[data-design="c"] .viewer-inline-qr img { width: 72px; height: 72px; }
  html[data-design="c"] .viewer-inline-qr p { margin-top: 4px; font-size: 9px; }
  html[data-design="c"] .layers-panel:not(.is-embed) { top: 40px; left: 40px; right: auto; max-height: calc(100% - 160px); }
  html[data-design="c"] .viewer-free-watermark { top: 36px !important; left: calc(50% - (var(--c-col) + 24px) / 2); }
}
@media (min-width: 641px) and (max-width: 1179px) {
  html[data-design="c"] main > header > a[href="/"] > span:not(.brand-mark) { display: none !important; }
  html[data-design="c"] .viewer-toolbar .viewer-tool-btn > span { display: none !important; }
  html[data-design="c"] .viewer-toolbar .viewer-tool-btn { flex-direction: row; min-height: 40px; }
}
html[data-design="c"] .viewer-panel-header h1 {
  display: block !important; overflow: visible !important; -webkit-line-clamp: unset !important; word-break: normal !important;
  font-size: 28px; line-height: 1.1; letter-spacing: -0.02em; font-weight: 600; margin-top: 8px;
}
html[data-design="c"] .viewer-panel-header { border-bottom: 1px solid #202020 !important; }
html[data-design="c"] .viewer-panel-header p:first-child::before { content: "Fig. 1 —"; margin-right: 8px; text-transform: none; letter-spacing: 0; font-weight: 600; color: #202020; }
html[data-design="c"] .viewer-meta-grid { gap: 14px !important; }
html[data-design="c"] #controlPanel .viewer-meta-grid > div, html[data-design="c"] #controlPanel .viewer-meta-grid + div {
  background: transparent !important; border-radius: 0 !important; border-top: 1px solid #202020; padding: 10px 0 !important;
}
@media (max-width: 640px) {
  html[data-design="c"] main > header {
    top: auto; bottom: calc(10px + env(safe-area-inset-bottom, 0px)); left: 10px !important; right: 10px !important; height: 56px;
    padding: 0 !important; align-items: center; justify-content: center;
  }
  html[data-design="c"] main > header > a[href="/"] {
    position: fixed; left: 12px; top: calc(var(--pv) + 12px); width: 36px; height: 36px; justify-content: center;
    background: #fff !important; border: 1px solid #202020 !important; border-radius: 50% !important;
  }
  html[data-design="c"] main > header > a[href="/"] > span:not(.brand-mark) { display: none !important; }
  html[data-design="c"] .viewer-toolbar { width: 100%; justify-content: space-between; gap: 0 !important; padding: 4px 6px; }
  html[data-design="c"] .viewer-toolbar .viewer-tool-btn { flex: 1 1 0; min-width: 0 !important; max-width: 44px; min-height: 40px; padding: 0 !important; }
  html[data-design="c"] .viewer-toolbar .viewer-tool-btn > span { display: none !important; }
  html[data-design="c"] #viewer { bottom: 76px !important; height: calc(100% - 76px) !important; }
  html[data-design="c"] #controlPanel {
    left: 10px !important; right: 10px !important; bottom: calc(76px + env(safe-area-inset-bottom, 0px)) !important;
    background: #fff !important; border: 1px solid #202020 !important; border-radius: 14px; max-height: 50dvh; padding: 14px !important;
  }
  html[data-design="c"] .viewer-free-watermark { top: calc(var(--pv) + 60px) !important; }
}

/* A and C: narrower panel -> each tool heading puts its label above its buttons. */
html[data-design="a"] #controlPanel .viewer-tool-heading,
html[data-design="c"] #controlPanel .viewer-tool-heading { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
@media (min-width: 641px) {
  html[data-design="a"] #controlPanel .viewer-tool-heading > div,
  html[data-design="c"] #controlPanel .viewer-tool-heading > div { flex-wrap: wrap; }
}

/* The brand mark sits inside the round brand button; no second box. */
html[data-design="c"] main > header > a[href="/"] .brand-mark { border-radius: 50%; }
@media (max-width: 640px) {
  html[data-design="c"] main > header > a[href="/"] .brand-mark { background: transparent; color: #202020; }
}

/* Active tools: the production look fills them orange; each design marks them its own way. */
html[data-design="a"] .viewer-toolbar .viewer-tool-btn.is-active { background: #f5f5f5 !important; border-color: transparent !important; color: #202020 !important; box-shadow: inset 0 -2px 0 #ff682c; }
html[data-design="c"] .viewer-toolbar .viewer-tool-btn.is-active { background: #f5f5f5 !important; border: 0 !important; color: #202020 !important; box-shadow: inset 0 -2px 0 #ff682c; }

/* A and C: the Info drawer is opaque, so the sidebar underneath does not ghost through. */
html[data-design="a"] #infoPanel, html[data-design="c"] #infoPanel {
  background: #fff !important; backdrop-filter: none; -webkit-backdrop-filter: none; border-left: 1px solid #e8e8e8 !important;
}
html[data-design="c"] #infoPanel { border-left-color: #202020 !important; }
@media (min-width: 641px) {
  html[data-design="a"] #controlPanel .viewer-tool-heading > div,
  html[data-design="c"] #controlPanel .viewer-tool-heading > div { align-self: stretch; justify-content: flex-start; margin: 0; }
}

/* Split bar: the camera link toggle. */
/* Active side of the split view: a thin orange frame; the rail follows it. */
html[data-design="b"].b-split[data-split-active="left"] #viewer { outline: 2px solid var(--b-accent); outline-offset: -2px; }
html[data-design="b"].b-split[data-split-active="right"] [data-split-frame] { outline: 2px solid var(--b-accent); outline-offset: -2px; }
html[data-design="b"].b-split[data-split-active="right"] #controlPanel { opacity: 0.55; transition: opacity 0.15s ease; }
html[data-design="b"].b-split[data-split-active="right"] #controlPanel:hover { opacity: 1; }
html[data-design="b"] .viewer-toolbar[data-target="right"] { border-color: var(--b-accent); }
html[data-design="b"] .viewer-toolbar .viewer-tool-btn.b-off { opacity: 0.35; cursor: default; }
html[data-design="b"] .b-split-bar button[data-split-link][aria-pressed="true"] { background: var(--b-accent); color: #fff; }