/* /remove-white-background/ page styles. Built from /assets/polyatic.css tokens only (no new colours or fonts).
   The preview backdrops white and black are the two plain test grounds a cut-out is checked on, by definition. */
.nojs{margin:1.25rem 0 0;padding:0.875rem 1rem;border:1px solid var(--line);border-left:0.25rem solid var(--accent);border-radius:0.625rem;background:var(--surface);color:var(--ink);font-size:0.9375rem;line-height:1.6}

@media(min-width:920px){.rb-duo{grid-template-columns:minmax(0,1.4fr) minmax(21rem,1fr)}}
.rb-side{display:grid;gap:1rem;align-content:start}

/* drop zone (same component as the other polyatic file tools) */
.drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.5rem;text-align:center;min-height:11rem;padding:1.5rem 1.25rem;border:2px dashed var(--line-2);border-radius:0.875rem;background:var(--surface-2);cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop:focus-visible,.drop.drag{border-color:var(--accent);background:var(--accent-soft)}
.drop b{font-size:1.0625rem}
.drop small{color:var(--muted);max-width:34ch}
@media(min-width:920px){.rb-drop{min-height:20rem}}
/* icon: a cut-out disc over a checkerboard */
.rb-drop-icon{position:relative;width:2.75rem;height:2.75rem;border:2px solid var(--ink);border-radius:0.375rem;overflow:hidden;background:repeating-conic-gradient(var(--line-2) 0 25%,var(--surface) 0 50%) 0 0/0.6875rem 0.6875rem}
.rb-drop-icon::after{content:"";position:absolute;inset:22%;border-radius:50%;background:var(--accent);border:2px solid var(--ink)}
.has-image .drop{display:none}

.hint{font-size:0.8125rem;color:var(--muted);margin:0.75rem 0.125rem 0;min-height:1.125rem}
.hint.bad{color:var(--bad);font-weight:600}
.has-image .hint{margin-top:0;margin-bottom:0.5rem}
.rb-warn{margin:0 0 0.625rem;padding:0.5rem 0.75rem;border:1px solid var(--line);border-left:0.25rem solid var(--warn);border-radius:0.5rem;background:var(--surface-2);font-size:0.84375rem;color:var(--ink-2)}
.rb-warn[hidden]{display:none}

.rb-work[hidden]{display:none}
.rb-view{display:flex;justify-content:center;align-items:center;border:1px solid var(--line);border-radius:0.5rem;background:var(--surface-2);padding:0.5rem;overflow:hidden}
.rb-stage{position:relative;max-width:100%;touch-action:pan-y;cursor:crosshair;user-select:none;-webkit-user-select:none;--pos:0%}
.rb-stage[data-backdrop="checker"] #after{background:repeating-conic-gradient(var(--line-2) 0 25%,var(--surface) 0 50%) 0 0/1rem 1rem}
.rb-stage[data-backdrop="white"] #after{background:#fff}
.rb-stage[data-backdrop="black"] #after{background:#000}
.rb-stage[data-backdrop="color"] #after{background:var(--bd,#fff)}
.rb-canvas{display:block;width:100%;height:100%}
.rb-before{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--pos)) 0 0)}
.rb-stage[data-busy="1"] #after{opacity:.85}
.rb-tag{position:absolute;top:0.5rem;padding:0.125rem 0.4375rem;border-radius:0.3125rem;background:var(--surface);color:var(--ink);border:1px solid var(--line);font-family:var(--mono);font-size:0.6875rem;text-transform:uppercase;letter-spacing:.06em;pointer-events:none;opacity:.92}
.rb-tag-l{left:0.5rem}.rb-tag-r{right:0.5rem}
.rb-handle{position:absolute;top:0;bottom:0;left:var(--pos);width:2.75rem;margin-left:-1.375rem;cursor:ew-resize;outline:none;touch-action:none}
.rb-handle::before{content:"";position:absolute;top:0;bottom:0;left:50%;width:2px;margin-left:-1px;background:var(--accent);box-shadow:0 0 0 1px var(--surface)}
.rb-handle::after{content:"\2194";position:absolute;top:50%;left:50%;width:2.25rem;height:2.25rem;margin:-1.125rem 0 0 -1.125rem;display:grid;place-items:center;border-radius:50%;background:var(--surface);border:2px solid var(--accent);color:var(--ink);font-size:1.0625rem;font-weight:700;box-shadow:var(--shadow)}
.rb-handle:focus-visible::after{outline:2px solid var(--accent);outline-offset:2px}

.rb-line{display:flex;flex-wrap:wrap;gap:0.5rem 0.875rem;align-items:center;margin:0.625rem 0.125rem 0;font-size:0.8125rem;color:var(--muted)}
.rb-mono{font-family:var(--mono);font-size:0.75rem}
.rb-muted{color:var(--muted)}
.rb-link{border:0;background:none;padding:0.25rem 0;margin-left:auto;color:var(--muted);font:inherit;font-size:0.8125rem;text-decoration:underline;text-underline-offset:2px;cursor:pointer}
.rb-link:hover{color:var(--accent)}
.rb-link:disabled{opacity:.5;cursor:default;text-decoration:none}
.rb-tapnote{margin-top:0.5rem}

.rb-mini{gap:0.375rem;flex-wrap:wrap}
.rb-mini button{min-height:2.25rem;padding-left:0.625rem;padding-right:0.625rem}
.rb-colorbtn{display:inline-flex;align-items:center;gap:0.375rem;min-height:2.25rem;padding:0 0.5rem;border:1px solid var(--line-2);border-radius:0.5rem;background:var(--surface);color:var(--ink);font-size:0.8125rem;cursor:pointer}
.rb-colorbtn.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}
.rb-colorbtn input{width:1.375rem;height:1.375rem;padding:0;border:1px solid var(--line-2);border-radius:0.25rem;background:none;cursor:pointer}

.rb-sec{font-size:0.8125rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin:0 0 0.75rem}
.rb-k{display:block;font-family:var(--mono);font-size:0.75rem;font-weight:500;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:0.375rem}
.rb-bgrow{display:flex;flex-wrap:wrap;align-items:center;gap:0.5rem 0.75rem;margin-bottom:1rem}
.rb-swatch{width:2rem;height:2rem;border-radius:0.375rem;border:1px solid var(--line-2);background:var(--sw,#fff)}
.rb-modes{margin-bottom:0.5rem}
.rb-modes button{min-height:2.5rem;flex:1 1 40%}
.rb-panel .field{margin-bottom:1rem}
.rb-panel .field[hidden],.rb-ink[hidden]{display:none}
.rb-check{margin:0 0 1rem;align-items:flex-start}
.rb-check input{margin-top:0.1875rem;flex:none}
.rb-ink{margin:-0.25rem 0 1rem}
.rb-wide{width:100%;margin:0.5rem 0 0.75rem}
.btn:disabled{opacity:.5;cursor:default;filter:none}
.modes button:focus-visible,.drop:focus-visible,.btn:focus-visible,.rb-colorbtn:focus-within{outline:2px solid var(--accent);outline-offset:2px}

.note{font-size:0.8125rem;color:var(--muted);margin:0.75rem 0.125rem 0;line-height:1.5}
.rb-note{margin:0 0.125rem 1rem}
#dlNote{margin-bottom:0}
.note.bad{color:var(--bad);font-weight:600}

.explainer .rb-steps,.explainer .rb-cannot{color:var(--muted);font-size:0.9375rem;margin:0 0 0.75rem;padding-left:1.25rem}
.explainer .rb-steps li,.explainer .rb-cannot li{margin:0 0 0.5rem}
.explainer .rb-steps b,.explainer .rb-cannot b{color:var(--ink)}
.explainer code{font-family:var(--mono);font-size:0.875em;overflow-wrap:anywhere}

@media (prefers-reduced-motion:reduce){.drop{transition:none}}