/* ============================================================================
   Frame — QR Phone Cover Builder (cover-builder.css)

   Page-specific styles for /qr-phone-cover-builder/. Loaded after
   theme-light.css, so it inherits the site's light design tokens (--ink,
   --ink-soft, --accent, --gold, --border, --radius, --shadow, etc.) and only
   adds what that shared system doesn't already cover: phone-shape silhouettes,
   the model/template picker grids, the step indicator, the live cover
   preview, and this page's own marketing sections.
   ========================================================================= */

/* ---------------------------------------------------------------- layout */
.cb-wrap{max-width:1280px;margin:0 auto;padding:0 32px;}
@media(max-width:760px){.cb-wrap{padding:0 20px;}}

.cb-section{padding:56px 0;}
.cb-section-head{max-width:640px;margin:0 auto 32px;text-align:center;}
.cb-section-head h2{font-size:clamp(24px,3vw,32px);margin:10px 0 8px;}
.cb-section-head p{color:var(--ink-soft);font-size:15.5px;}
.cb-section-alt{background:var(--surface-2);}

/* ------------------------------------------------------------- step rail */
.cb-steps{
  display:flex;align-items:center;justify-content:center;gap:0;
  max-width:920px;margin:0 auto 40px;flex-wrap:wrap;
}
.cb-step{display:flex;align-items:center;gap:10px;padding:0 6px;}
.cb-step-num{
  width:30px;height:30px;border-radius:50%;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;
  background:#FFF;border:1.5px solid var(--border);color:var(--ink-dim);
  transition:all .2s ease;
}
.cb-step-label{font-size:13.5px;font-weight:600;color:var(--ink-dim);white-space:nowrap;}
.cb-step.is-active .cb-step-num{background:var(--accent);border-color:var(--accent);color:#FFF;box-shadow:0 0 0 4px var(--accent-soft);}
.cb-step.is-active .cb-step-label{color:var(--ink);}
.cb-step.is-done .cb-step-num{background:var(--laser);border-color:var(--laser);color:#FFF;}
.cb-step-line{width:36px;height:1.5px;background:var(--border);margin:0 2px;}
@media(max-width:700px){
  .cb-steps{gap:6px;}
  .cb-step-label{display:none;}
  .cb-step-line{width:18px;}
}

/* --------------------------------------------------------- builder shell */
.cb-builder{
  display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:0;
  background:#FFF;border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);overflow:hidden;
}
@media(max-width:960px){.cb-builder{grid-template-columns:1fr;}}

.cb-controls{padding:32px;min-width:0;}
.cb-preview-col{
  background:var(--surface-2);padding:32px;
  display:flex;flex-direction:column;align-items:center;gap:18px;
  border-left:1px solid var(--border-soft);
}
/* Sticky, but deliberately NOT height-capped-with-overflow:auto — that
   combination is what produced an internal scrollbar clipping the phone
   preview on shorter viewports (1366x768, laptop-class screens). Instead
   the phone stage itself (.cb-photoreal-stage) caps its own height to a
   viewport-relative max so the WHOLE column (phone + meta + action
   buttons) fits without needing to scroll; if it still doesn't fit on an
   unusually short viewport, the column scrolls with the page rather than
   gaining its own inner scrollbar — a full-page scroll reads as normal, a
   nested one reads as broken. */
@media(min-width:961px){.cb-preview-col{position:sticky;top:76px;align-self:start;max-height:calc(100vh - 96px);overflow:visible;}}
@media(max-width:960px){
  .cb-preview-col{border-left:0;border-top:1px solid var(--border-soft);order:-1;padding:28px 20px;}
  /* Not sticky here (normal flow, order:-1 already puts it first) so the
     vh-based height cap that exists purely to dodge the desktop inner-
     scrollbar problem isn't needed — let the phone size from max-width
     instead, same as before this pass. */
  .cb-photoreal-stage{height:auto;}
  .cb-fit-stage{height:auto;min-height:260px;}
}

.cb-panel{margin-bottom:6px;}
.cb-panel + .cb-panel{margin-top:28px;padding-top:26px;border-top:1px solid var(--border-soft);}
.cb-panel-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:14px;}
.cb-panel-title{font-size:15.5px;font-weight:700;color:var(--ink);display:flex;align-items:center;gap:8px;}
.cb-panel-title .cb-panel-num{
  width:22px;height:22px;border-radius:50%;background:var(--ink);color:#FFF;
  font-size:11.5px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;
}
.cb-panel-note{font-size:12.5px;color:var(--ink-dim);}

/* ------------------------------------------------------ phone model grid */
.cb-model-brand-block{margin-bottom:16px;}
.cb-model-brand-block:last-child{margin-bottom:0;}
.cb-model-brand-label{font-size:11.5px;font-weight:700;color:var(--ink-dim);text-transform:uppercase;letter-spacing:.05em;margin-bottom:9px;}
.cb-model-search{
  width:100%;background:#FFF;border:1.5px solid var(--border);border-radius:10px;
  padding:10px 14px;font-size:13px;font-family:inherit;color:var(--ink);
  transition:border-color .15s ease;
}
.cb-model-search:focus{outline:none;border-color:var(--accent);}
.cb-model-search::placeholder{color:var(--ink-dim);}

.cb-model-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;}
@media(max-width:700px){.cb-model-grid{grid-template-columns:repeat(4,1fr);}}
@media(max-width:560px){.cb-model-grid{grid-template-columns:repeat(3,1fr);}}
.cb-model-card{
  background:#FFF;border:1.5px solid var(--border);border-radius:12px;
  padding:12px 6px 10px;display:flex;flex-direction:column;align-items:center;gap:8px;
  cursor:pointer;transition:border-color .15s ease,box-shadow .15s ease,transform .1s ease;
  text-align:center;min-height:44px;
}
.cb-model-card:hover{border-color:#CBD2DC;box-shadow:var(--shadow-sm);}
.cb-model-card.is-active{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px var(--accent-soft);}
.cb-model-card:active{transform:scale(.98);}
/* One plain generic icon for every model/brand — deliberately not
   differentiated by camera type or size (see miniPhoneThumb's removal
   note in cover-builder.js): the picker is for finding a model by name,
   not previewing its camera layout. */
/* .cb-mini-phone is now a real <img> (a per-archetype canvas render — see
   getModelThumbDataUrl() in cover-builder.js), not a flat placeholder;
   object-fit:contain preserves each device's own aspect ratio (a tablet
   glyph renders visibly shorter/wider than a phone one) inside a fixed
   card-icon box. The <span> fallback (no matching DEVICE_GEOMETRY entry)
   keeps the old flat dark rounded-rect look so a missing registry row
   never renders as a broken image. */
.cb-model-card .cb-mini-phone{
  width:26px;height:48px;object-fit:contain;display:block;
}
span.cb-mini-phone{border-radius:7px;background:#1C1E22;border:1.5px solid #2A2D33;}
.cb-model-card span{font-size:11px;font-weight:600;color:var(--ink-soft);line-height:1.25;}
.cb-model-card.is-active span{color:var(--accent);}

/* ------------------------------------------------------ category tabs */
.cb-cat-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px;}
.cb-cat-tab{
  display:inline-flex;align-items:center;gap:8px;background:#FFF;border:1.5px solid var(--border);
  color:var(--ink-soft);border-radius:999px;padding:8px 15px 8px 10px;font-size:13px;font-weight:650;
  cursor:pointer;transition:all .15s ease;min-height:38px;
}
.cb-cat-tab:hover{border-color:#CBD2DC;color:var(--ink);}
.cb-cat-tab.is-active{border-color:var(--ink);background:var(--ink);color:#FFF;}
.cb-cat-dot{width:16px;height:16px;border-radius:50%;flex-shrink:0;box-shadow:inset 0 0 0 1px rgba(0,0,0,.08);}

/* --------------------------------------------------------- layout grid */
.cb-layout-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;}
@media(max-width:640px){
  .cb-layout-grid{grid-template-columns:none;grid-auto-flow:column;grid-auto-columns:128px;overflow-x:auto;
    scroll-snap-type:x proximity;padding-bottom:4px;margin:0 -2px;}
  .cb-layout-grid::-webkit-scrollbar{height:5px;}
  .cb-layout-grid::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px;}
}
.cb-layout-card{
  border:1.5px solid var(--border);border-radius:12px;overflow:hidden;cursor:pointer;background:#FFF;
  transition:border-color .15s ease,box-shadow .15s ease,transform .1s ease;text-align:left;
  scroll-snap-align:start;min-height:44px;
}
.cb-layout-card:hover{box-shadow:var(--shadow-sm);}
.cb-layout-card.is-active{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);}
.cb-layout-card:active{transform:scale(.98);}
.cb-layout-thumb{
  display:block;height:64px;position:relative;
  background:linear-gradient(150deg,var(--lc-bg,#eee),var(--lc-bg2,#fff));
}
.cb-layout-thumb-mark{position:absolute;inset:0;}
/* Each thumbnail sketches its layout's signature composition at tiny
   scale — a real visual cue, not just a color chip. */
.cb-layout-classic .cb-layout-thumb-mark::after{
  content:'';position:absolute;left:50%;bottom:8px;transform:translateX(-50%);
  width:20px;height:20px;background:#FFF;border-radius:4px;
}
.cb-layout-badge .cb-layout-thumb-mark::after{
  content:'';position:absolute;left:50%;top:50%;transform:translate(-50%,-46%);
  width:26px;height:26px;background:#FFF;border-radius:5px;
}
.cb-layout-badge .cb-layout-thumb-mark::before{
  content:'';position:absolute;left:50%;top:26%;transform:translate(-50%,-50%) rotate(-6deg);
  width:24px;height:8px;background:var(--lc-accent,#E8B94E);border-radius:5px;
}
.cb-layout-frame .cb-layout-thumb-mark::before{
  content:'';position:absolute;inset:7px;border:1.5px solid var(--lc-accent,#E8B94E);border-radius:6px;
}
.cb-layout-frame .cb-layout-thumb-mark::after{
  content:'';position:absolute;left:50%;bottom:12px;transform:translateX(-50%);
  width:14px;height:14px;background:#FFF;border-radius:3px;
}
.cb-layout-side .cb-layout-thumb-mark::before{
  content:'';position:absolute;top:0;right:0;bottom:0;width:9px;background:var(--lc-accent,#E8B94E);
}
.cb-layout-side .cb-layout-thumb-mark::after{
  content:'';position:absolute;left:10px;bottom:8px;width:16px;height:16px;background:#FFF;border-radius:4px;
}
.cb-layout-name{display:block;padding:8px 10px 1px;font-size:12px;font-weight:700;color:var(--ink);}
.cb-layout-blurb{display:block;padding:0 10px 9px;font-size:10.5px;color:var(--ink-dim);line-height:1.35;}

/* --------------------------------------------------------------- fields */
.cb-field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px;}
@media(max-width:520px){.cb-field-row{grid-template-columns:1fr;}}
.cb-field{margin-bottom:14px;}
.cb-field label{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.cb-field label .cb-optional{font-weight:400;color:var(--ink-dim);font-size:11.5px;}
.cb-field input,.cb-field textarea,.cb-field select{
  width:100%;background:#FFF;border:1px solid var(--border);color:var(--ink);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);font-family:inherit;font-size:14px;
  padding:11px 13px;transition:border-color .15s,box-shadow .15s;
}
.cb-field input:focus,.cb-field textarea:focus,.cb-field select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);
}
.cb-field input::placeholder,.cb-field textarea::placeholder{color:#A5ADBB;}
.cb-icon-field{position:relative;}
.cb-icon-field input{padding-left:40px;}
.cb-icon-field .cb-field-ico{position:absolute;left:12px;top:37px;width:18px;height:18px;color:var(--ink-dim);}

.cb-logo-drop{
  background:var(--surface-2);border:1.5px dashed var(--border);border-radius:var(--radius);
  padding:18px;display:flex;align-items:center;gap:12px;cursor:pointer;transition:border-color .15s,background .15s;
}
.cb-logo-drop:hover{border-color:var(--accent);background:var(--accent-soft);}
.cb-logo-drop-icon{width:38px;height:38px;border-radius:9px;background:#FFF;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--accent);}
.cb-logo-drop-text{font-size:13px;color:var(--ink-soft);}
.cb-logo-drop-text strong{color:var(--ink);display:block;font-size:13.5px;margin-bottom:1px;}

/* --------------------------------------------------------- destination */
.cb-dest-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px;}
.cb-dest-tab{
  background:#FFF;border:1px solid var(--border);color:var(--ink-soft);border-radius:8px;
  padding:8px 14px;font-size:13px;font-weight:600;cursor:pointer;transition:all .15s ease;
}
.cb-dest-tab:hover{border-color:#CBD2DC;color:var(--ink);}
.cb-dest-tab.is-active{background:var(--ink);border-color:var(--ink);color:#FFF;}

/* --------------------------------------------------------------- style */
.cb-swatch-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.cb-color-swatch{
  width:34px;height:34px;border-radius:50%;border:2px solid var(--border);cursor:pointer;
  transition:transform .15s ease,box-shadow .15s ease;padding:0;
}
.cb-color-swatch.is-active{border-color:var(--ink);transform:scale(1.14);box-shadow:0 0 0 3px var(--accent-soft);}

.cb-toggle-row{display:flex;flex-wrap:wrap;gap:8px;}
.cb-toggle-chip{
  display:inline-flex;align-items:center;gap:6px;background:#FFF;border:1px solid var(--border);
  border-radius:999px;padding:7px 13px 7px 10px;font-size:12.5px;font-weight:600;color:var(--ink-soft);
  cursor:pointer;transition:all .15s ease;user-select:none;
}
.cb-toggle-chip:hover{border-color:#CBD2DC;}
.cb-toggle-chip.is-on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent);}
.cb-toggle-chip input{position:absolute;opacity:0;width:0;height:0;}
.cb-toggle-chip .cb-chip-dot{width:7px;height:7px;border-radius:50%;background:var(--border);flex-shrink:0;}
.cb-toggle-chip.is-on .cb-chip-dot{background:var(--accent);}

.cb-seg{display:inline-flex;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:3px;gap:2px;}
.cb-seg button{
  background:transparent;border:0;padding:7px 14px;border-radius:7px;font-size:12.5px;font-weight:600;
  color:var(--ink-soft);cursor:pointer;transition:all .15s ease;
}
.cb-seg button.is-active{background:#FFF;color:var(--ink);box-shadow:var(--shadow-sm);}

.cb-qr-risk-warning{
  display:none;flex-wrap:wrap;align-items:center;gap:7px;background:#FEF6E7;border:1px solid #F5D9A6;color:#8A5A0A;
  border-radius:var(--radius);padding:9px 12px;font-size:11.5px;font-weight:600;margin-top:10px;line-height:1.4;
}
.cb-qr-risk-warning.is-visible{display:flex;}
.cb-qr-risk-warning svg{flex-shrink:0;width:15px;height:15px;}
.cb-qr-risk-warning span{flex:1 1 auto;}
.cb-move-qr-btn{
  flex-shrink:0;background:#8A5A0A;color:#FFF;border:0;border-radius:999px;
  padding:6px 13px;font-size:11px;font-weight:700;cursor:pointer;margin-left:auto;
}
.cb-move-qr-btn:hover{background:#6E4808;}

.cb-preview-stage-title{margin:2px 0 0;font-size:15.5px;font-weight:750;color:var(--ink);text-align:center;}
.cb-print-guides-toggle{
  display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:600;color:var(--ink-soft);
  cursor:pointer;margin:2px 0 4px;
}
.cb-print-guides-toggle input{width:15px;height:15px;accent-color:var(--accent);cursor:pointer;}

/* --------------------------------------------------- custom background upload */
.cb-bg-mode-tabs{display:flex;gap:8px;margin-bottom:16px;}
.cb-bg-mode-tab{
  flex:1;background:#FFF;border:1.5px solid var(--border);color:var(--ink-soft);border-radius:10px;
  padding:10px 12px;font-size:12.5px;font-weight:650;cursor:pointer;transition:all .15s ease;text-align:center;
}
.cb-bg-mode-tab:hover{border-color:#CBD2DC;}
.cb-bg-mode-tab.is-active{border-color:var(--ink);background:var(--ink);color:#FFF;}
.cb-upload-drop{
  background:var(--surface-2);border:1.5px dashed var(--border);border-radius:var(--radius);
  padding:26px 18px;display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;
  cursor:pointer;transition:border-color .15s,background .15s;
}
.cb-upload-drop:hover{border-color:var(--accent);background:var(--accent-soft);}
.cb-upload-drop-icon{width:40px;height:40px;border-radius:10px;background:#FFF;border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--accent);}
.cb-upload-drop strong{font-size:13.5px;color:var(--ink);}
.cb-upload-drop span{font-size:12px;color:var(--ink-dim);}
.cb-bg-controls{display:none;}
.cb-bg-controls.is-visible{display:block;}
.cb-bg-range-row{margin-bottom:12px;}
.cb-bg-range-row label{display:flex;justify-content:space-between;font-size:12px;font-weight:600;color:var(--ink);margin-bottom:6px;}
.cb-bg-range-row input[type="range"]{width:100%;accent-color:var(--accent);}
.cb-bg-hint{font-size:11.5px;color:var(--ink-dim);margin:0 0 12px;line-height:1.5;}
.cb-bg-actions{display:flex;gap:8px;}
.cb-bg-actions .cb-btn-secondary{flex:1;padding:9px 12px;font-size:12.5px;}

/* --------------------------------------------------------- live preview
   ONE premium photorealistic case mockup, shared by every model/brand —
   see the file-level architecture note in the HTML above this element.
   Asset-driven: a real PNG for the case body/camera (assets/mockups/
   iphone-16-pro-max-*.png — filename kept for continuity, now the
   universal preview asset), an alpha mask PNG defining the printable
   surface (CSS mask-image, not a hand-tuned clip-path), and a transparent
   foreground PNG (camera + rim) layered on top so artwork/QR/text always
   render as if physically printed under real hardware. All layers share
   one rigid wrapper (.cb-pr-object) so the desktop tilt rotates the whole
   "object," never the artwork alone. */
.cb-photoreal-stage{
  width:auto;max-width:320px;height:min(600px,58vh);min-height:300px;aspect-ratio:1/2.1;position:relative;
  display:flex;align-items:center;justify-content:center;perspective:1300px;
  flex-shrink:0;
}
.cb-pr-shadow{
  position:absolute;left:50%;bottom:-4%;width:78%;height:9%;
  transform:translateX(-50%);border-radius:50%;
  background:radial-gradient(closest-side,rgba(16,24,40,.34),rgba(16,24,40,0) 72%);
  filter:blur(2px);z-index:0;
}
.cb-pr-object{
  width:100%;height:100%;position:relative;
  transition:transform .45s cubic-bezier(.16,1,.3,1);will-change:transform;
  filter:drop-shadow(0 22px 40px rgba(16,24,40,.26));
}
.cb-pr-base,.cb-pr-foreground{
  position:absolute;inset:0;width:100%;height:100%;pointer-events:none;user-select:none;
}
.cb-pr-foreground{z-index:3;}
/* Everything that "prints" onto the case — background, name, tagline,
   company, QR, layout-specific decoration (frame border, side stripe,
   badge pill, business-card block) — is drawn onto ONE canvas
   (#cbPrDesignCanvas) by renderDesignContent() in cover-builder.js, the
   exact same function the flat export calls. That canvas is explicitly
   sized/positioned (via JS, in updateDesignPreview()) to the real
   measured printable-area rectangle (PHONE_GEOMETRY in cover-builder.js),
   not guessed from CSS padding percentages — this is what guarantees the
   QR can never extend past the actual case edge. .cb-pr-artwork itself is
   now just a mask-clipping wrapper: the mask still clips the canvas's
   rectangular corners to the real rounded-corner printable silhouette, a
   defense-in-depth safety net on top of the JS-computed bounds. */
.cb-pr-artwork{
  position:absolute;inset:0;width:100%;height:100%;overflow:hidden;z-index:2;
  mask-image:url(/assets/mockups/iphone-16-pro-max-mask.png?v=20260910-1);
  -webkit-mask-image:url(/assets/mockups/iphone-16-pro-max-mask.png?v=20260910-1);
  mask-size:100% 100%;-webkit-mask-size:100% 100%;
  mask-repeat:no-repeat;-webkit-mask-repeat:no-repeat;
}
.cb-pr-design-canvas{position:absolute;display:block;}
@media(hover:none),(pointer:coarse){.cb-pr-object{transition:transform .3s ease;}}

/* DEVICE FIT PREVIEW: same fixed box as .cb-photoreal-stage (same fix for
   the same flexbox-shrink problem — see that rule's history), but there is
   no fixed aspect-ratio here since the box must letterbox a DIFFERENT body
   aspect ratio per selected model. #cbFitCanvas fills the whole box and
   updateFitPreview() (cover-builder.js) does the "contain" math itself —
   scaling the device silhouette to fit within whatever box size this
   renders at, per DEVICE_GEOMETRY's real body width/height for the
   selected model. */
.cb-fit-stage{
  width:auto;max-width:320px;height:min(600px,58vh);min-height:300px;position:relative;
  display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.cb-fit-stage canvas{width:100%;height:100%;display:block;}
/* .cb-photoreal-stage and .cb-fit-stage both set their own `display`
   unconditionally, which is EQUAL CSS specificity to the browser's default
   [hidden]{display:none} rule — so toggling the `hidden` attribute alone
   (see initPreviewModeToggle() in cover-builder.js) does nothing without
   this override; without it, whichever stage is "hidden" stays visually
   stacked underneath the other. */
.cb-photoreal-stage[hidden],.cb-fit-stage[hidden]{display:none;}
.cb-preview-toggle{margin-bottom:-4px;}
.cb-preview-mode-help{text-align:center;max-width:280px;}

.cb-preview-meta{text-align:center;}
.cb-preview-meta-model{font-size:12.5px;font-weight:600;color:var(--ink);}
.cb-preview-meta-sub{font-size:11.5px;color:var(--ink-dim);margin-top:2px;}

.cb-actions{width:100%;display:flex;flex-direction:column;gap:8px;margin-top:4px;}
.cb-btn-primary{
  width:100%;background:var(--accent);color:#FFF;border:0;border-radius:var(--radius);
  font-weight:650;font-size:14.5px;padding:13px 18px;cursor:pointer;
  box-shadow:0 2px 8px rgba(44,95,246,.28);transition:background .15s ease,transform .1s ease;
  display:flex;align-items:center;justify-content:center;gap:8px;
}
.cb-btn-primary:hover{background:#1E4FDD;}
.cb-btn-primary:active{transform:scale(.985);}
.cb-btn-secondary{
  width:100%;background:#FFF;color:var(--ink);border:1px solid var(--border);border-radius:var(--radius);
  font-weight:600;font-size:13.5px;padding:11px 16px;cursor:pointer;box-shadow:var(--shadow-sm);
  transition:border-color .15s ease,background .15s ease;
  display:flex;align-items:center;justify-content:center;gap:7px;
}
.cb-btn-secondary:hover{border-color:#CBD2DC;background:#FCFCFD;}
.cb-actions-row{display:flex;gap:8px;}
.cb-actions-row .cb-btn-secondary{flex:1;}
.cb-preview-hint{font-size:11.5px;color:var(--ink-dim);text-align:center;line-height:1.5;max-width:230px;}
.cb-toast{
  position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(12px);
  background:var(--ink);color:#FFF;font-size:13.5px;font-weight:600;padding:11px 20px;border-radius:999px;
  box-shadow:0 8px 24px rgba(0,0,0,.22);opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;
  z-index:400;
}
.cb-toast.is-visible{opacity:1;transform:translateX(-50%) translateY(0);}

/* ------------------------------------------------------------- hero art */
.cb-hero-visual{display:flex;justify-content:center;align-items:flex-end;gap:16px;margin-top:28px;}
.cb-hero-phone{
  width:92px;aspect-ratio:1/1.98;border-radius:20px;position:relative;flex-shrink:0;
  box-shadow:0 18px 36px rgba(6,32,40,.28),0 0 0 1.5px rgba(0,0,0,.18),0 1px 0 rgba(255,255,255,.12) inset;
  transform:translateY(0) rotate(-3deg);transition:transform .3s ease;
}
.cb-hero-phone::after{
  content:'';position:absolute;inset:0;border-radius:20px;pointer-events:none;
  background:linear-gradient(120deg,rgba(255,255,255,.16),rgba(255,255,255,0) 40%);
}
.cb-hero-phone.cb-hp-2{width:116px;transform:translateY(-14px) rotate(0deg);z-index:2;border-radius:24px;}
.cb-hero-phone.cb-hp-2::after{border-radius:24px;}
.cb-hero-phone.cb-hp-3{width:92px;transform:translateY(0) rotate(3deg);}
@media(max-width:560px){
  .cb-hero-visual{gap:10px;margin-top:20px;}
  .cb-hero-phone{width:70px;}
  .cb-hero-phone.cb-hp-2{width:90px;transform:translateY(-10px) rotate(0deg);}
}

/* --------------------------------------------------- hero "how it works" */
.cb-hero-steps{
  display:flex;justify-content:center;flex-wrap:wrap;gap:10px 6px;margin-top:30px;max-width:820px;
}
.cb-hero-step{
  display:flex;align-items:center;gap:9px;background:rgba(255,255,255,.14);
  border:1px solid rgba(255,255,255,.28);border-radius:999px;padding:8px 16px 8px 10px;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.cb-hero-step-num{
  width:20px;height:20px;border-radius:50%;background:rgba(255,255,255,.92);color:#0B3540;
  font-size:11px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.cb-hero-step-label{font-size:12.5px;font-weight:650;color:#0B3540;white-space:nowrap;}
.cb-hero-step-arrow{color:rgba(11,53,64,.4);font-size:13px;align-self:center;}
@media(max-width:700px){.cb-hero-step-arrow{display:none;}.cb-hero-steps{gap:8px;}}

/* -------------------------------------------------------------- cards */
.cb-card-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
@media(max-width:900px){.cb-card-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.cb-card-grid{grid-template-columns:1fr;}}
/* Three-item variant (e.g. the profile-page-concept section) — desktop
   only, so the shared 900px/520px collapse rules above still win on
   mobile instead of forcing 3 cramped columns down to a 375px viewport. */
@media(min-width:901px){.cb-card-grid-3{grid-template-columns:repeat(3,1fr);}}
.cb-card{
  background:#FFF;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:22px;box-shadow:var(--shadow-sm);transition:box-shadow .18s ease,transform .12s ease;
}
.cb-card:hover{box-shadow:var(--shadow);transform:translateY(-2px);}
.cb-card-icon{
  width:38px;height:38px;border-radius:10px;background:var(--accent-soft);color:var(--accent);
  display:flex;align-items:center;justify-content:center;margin-bottom:14px;
}
.cb-card h3{font-size:15px;margin:0 0 6px;}
.cb-card p{font-size:13.5px;color:var(--ink-soft);margin:0;line-height:1.55;}

.cb-usecase-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
@media(max-width:820px){.cb-usecase-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.cb-usecase-grid{grid-template-columns:1fr;}}
.cb-usecase{
  display:flex;align-items:center;gap:12px;background:#FFF;border:1px solid var(--border);
  border-radius:12px;padding:16px 18px;box-shadow:var(--shadow-sm);
}
.cb-usecase-ico{width:32px;height:32px;border-radius:8px;background:var(--gold-soft);color:var(--gold);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.cb-usecase span{font-size:13.5px;font-weight:600;color:var(--ink);}

.cb-template-showcase{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
@media(max-width:820px){.cb-template-showcase{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.cb-template-showcase{grid-template-columns:1fr;}}
.cb-showcase-card{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-sm);background:#FFF;}
.cb-showcase-art{height:150px;position:relative;display:flex;align-items:flex-end;padding:16px;}
.cb-showcase-art::before{content:'';position:absolute;top:14px;left:14px;width:34px;height:34px;border-radius:9px;background:rgba(255,255,255,.22);}
.cb-showcase-tag{
  font-size:10.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  background:rgba(255,255,255,.9);padding:4px 10px;border-radius:999px;
}
.cb-showcase-body{padding:16px 18px 18px;}
.cb-showcase-body h3{font-size:14.5px;margin:0 0 5px;}
.cb-showcase-body p{font-size:12.5px;color:var(--ink-soft);margin:0;}

/* ------------------------------------------------------------ print guide */
.cb-print-steps{counter-reset:cbstep;max-width:680px;margin:0 auto;}
.cb-print-step{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--border-soft);}
.cb-print-step:last-child{border-bottom:0;}
.cb-print-step-num{
  counter-increment:cbstep;flex-shrink:0;width:30px;height:30px;border-radius:50%;
  background:var(--ink);color:#FFF;font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.cb-print-step-num::before{content:counter(cbstep);}
.cb-print-step h4{font-size:14.5px;margin:0 0 4px;}
.cb-print-step p{font-size:13.5px;color:var(--ink-soft);margin:0;line-height:1.55;}

.cb-shop-note{
  max-width:680px;margin:28px auto 0;background:var(--gold-soft);border:1px solid #F2E4C8;
  border-left:3px solid var(--gold);border-radius:var(--radius);padding:18px 22px;
}
.cb-shop-note h4{font-size:14px;margin:0 0 10px;}
.cb-shop-note ul{margin:0;padding-left:18px;}
.cb-shop-note li{font-size:13.5px;color:var(--ink-soft);margin-bottom:5px;line-height:1.5;}
.cb-shop-note li:last-child{margin-bottom:0;}

/* ------------------------------------------------------------- final CTA */
.cb-final-cta{
  max-width:820px;margin:0 auto;text-align:center;background:var(--ink);color:#FFF;
  border-radius:24px;padding:48px 32px;
}
.cb-final-cta h2{color:#FFF;font-size:clamp(22px,3vw,28px);margin:0 0 10px;}
.cb-final-cta p{color:rgba(255,255,255,.7);font-size:15px;margin:0 0 22px;}
.cb-final-cta .cb-btn-primary{width:auto;padding:14px 30px;display:inline-flex;}

/* ---------------------------------------------------- QR error / density */
.cb-qr-error{
  display:none;background:#FEF3F2;border:1px solid #FDA29B;color:#B42318;border-radius:var(--radius);
  padding:10px 14px;font-size:12.5px;font-weight:600;margin-bottom:12px;text-align:center;
}
.cb-density{
  width:100%;background:#FFF;border:1px solid var(--border);border-radius:var(--radius);
  padding:12px 14px;margin-top:2px;
}
.cb-density-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:5px;}
.cb-density-title{font-size:11.5px;font-weight:600;color:var(--ink-dim);}
.cb-density-badge{font-size:11px;font-weight:700;padding:2px 9px;border-radius:999px;}
.cb-density[data-level="light"] .cb-density-badge{background:var(--laser-soft);color:var(--laser);}
.cb-density[data-level="moderate"] .cb-density-badge{background:var(--accent-soft);color:var(--accent);}
.cb-density[data-level="dense"] .cb-density-badge{background:#FEF6E7;color:#B54708;}
.cb-density[data-level="very-dense"] .cb-density-badge{background:#FEF3F2;color:#B42318;}
.cb-density-hint{font-size:11px;color:var(--ink-dim);line-height:1.45;margin:0;}

/* -------------------------------------------------------- checklist */
.cb-checklist{width:100%;text-align:left;}
.cb-check-row{
  display:flex;align-items:flex-start;gap:9px;padding:7px 0;cursor:pointer;font-size:12px;
  color:var(--ink-soft);line-height:1.4;
}
.cb-check-row input{position:absolute;opacity:0;width:0;height:0;}
.cb-check-box{
  width:18px;height:18px;border-radius:5px;border:1.5px solid var(--border);background:#FFF;
  flex-shrink:0;display:flex;align-items:center;justify-content:center;color:transparent;
  transition:all .15s ease;margin-top:1px;
}
.cb-check-row.is-checked .cb-check-box{background:var(--laser);border-color:var(--laser);color:#FFF;}
.cb-checklist-progress{font-size:11px;font-weight:600;color:var(--ink-dim);margin-top:4px;text-align:right;}

/* --------------------------------------------------- progressive disclosure */
.cb-advanced-toggle{
  display:flex;align-items:center;justify-content:space-between;width:100%;background:transparent;
  border:0;border-top:1px solid var(--border-soft);padding:14px 0 0;margin-top:16px;cursor:pointer;
  font-size:13px;font-weight:650;color:var(--ink-soft);
}
.cb-advanced-toggle:hover{color:var(--ink);}
.cb-advanced-toggle .cb-adv-chev{transition:transform .2s ease;color:var(--ink-dim);}
.cb-advanced-toggle.is-open .cb-adv-chev{transform:rotate(180deg);}
.cb-advanced-panel{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.cb-advanced-panel.is-open{max-height:900px;}
.cb-advanced-panel-inner{padding-top:16px;}

/* --------------------------------------------------- print instructions */
.cb-copy-instructions{
  display:inline-flex;align-items:center;gap:7px;background:transparent;border:1px dashed var(--border);
  border-radius:8px;padding:9px 14px;font-size:12.5px;font-weight:600;color:var(--ink-soft);
  cursor:pointer;transition:all .15s ease;margin-top:14px;
}
.cb-copy-instructions:hover{border-color:var(--accent);color:var(--accent);border-style:solid;}

/* --------------------------------------------------- example scenarios */
.cb-example-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
@media(max-width:900px){.cb-example-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:520px){.cb-example-grid{grid-template-columns:1fr;}}
.cb-example-card{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow-sm);background:#FFF;}
.cb-example-art{
  height:110px;position:relative;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;
  padding:12px;
}
.cb-example-art .cb-ea-avatar{width:26px;height:26px;border-radius:50%;background:rgba(255,255,255,.85);margin-bottom:6px;}
.cb-example-art .cb-ea-qr{width:22px;height:22px;background:#FFF;border-radius:4px;}
.cb-example-body{padding:14px 16px 16px;}
.cb-example-body h3{font-size:14px;margin:0 0 6px;}
.cb-example-chips{display:flex;flex-wrap:wrap;gap:5px;}
.cb-example-chips span{font-size:10.5px;font-weight:600;background:var(--surface-2);color:var(--ink-soft);padding:3px 8px;border-radius:999px;}

/* ------------------------------------------------------- honesty notice */
.cb-honesty-note{
  display:flex;gap:9px;background:var(--accent-soft);border:1px solid #BFD0FF;border-radius:var(--radius);
  padding:11px 13px;font-size:11.5px;color:var(--ink-soft);line-height:1.5;margin-top:12px;
}
.cb-honesty-note svg{flex-shrink:0;width:15px;height:15px;color:var(--accent);margin-top:1px;}
.cb-honesty-note strong{color:var(--ink);}

/* ------------------------------------------------------------- mobile QA pass
   Touch targets for every new interactive control, and no cramped spacing
   at 375-430px. No horizontal scroll anywhere except the intentional
   layout-grid strip (already scoped above). */
@media(max-width:430px){
  .cb-bg-mode-tabs{flex-direction:column;}
  .cb-bg-mode-tab{padding:12px;min-height:44px;}
  .cb-upload-drop{padding:22px 14px;}
  .cb-seg button{padding:9px 12px;min-height:40px;}
  .cb-toggle-chip{padding:9px 14px 9px 11px;min-height:38px;}
  .cb-cat-tab{padding:9px 15px 9px 10px;min-height:40px;}
  .cb-model-card{min-height:48px;padding:11px 5px 9px;}
  .cb-check-row{padding:9px 0;}
  .cb-check-row .cb-check-box{width:20px;height:20px;}
  .cb-density,.cb-checklist,.cb-honesty-note{padding-left:12px;padding-right:12px;}
  .cb-bg-actions{flex-direction:column;}
  .cb-hero-steps{margin-top:22px;}
  .cb-hero-step{padding:7px 13px 7px 8px;}
  .cb-hero-step-label{font-size:11.5px;}
}

/* --------------------------------------------------------- reduced motion */
@media(prefers-reduced-motion:reduce){
  .cb-model-card,.cb-layout-card,.cb-cat-tab,.cb-card,.cb-btn-primary,.cb-btn-secondary,
  .cb-pr-object,.cb-toast,.cb-hero-phone{transition:none!important;animation:none!important;}
}