/* In-browser slicer and CAM (apps.tools: /tools/slicer/, /tools/cam/). Builds on site.css and tools.css. */
.fab{display:grid;gap:14px;align-items:start}
.fab>*{min-width:0}
.fab__side{display:grid;gap:4px;padding:16px}
.fab__main{display:grid;gap:12px;order:-1}

/* settings panel */
.fab-set{border:0;margin:0;padding:12px 0;min-width:0;display:grid;gap:10px;border-top:1px solid var(--line2)}
.fab-set:first-child{border-top:0;padding-top:0}
.fab-set legend{font-weight:800;font-size:15px;padding:0;margin-bottom:8px}
.fab-set>summary{font-weight:800;font-size:15px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;min-height:32px}
.fab-set>summary::-webkit-details-marker{display:none}
.fab-set>summary::after{content:"";width:8px;height:8px;border:solid var(--muted);border-width:0 2px 2px 0;transform:rotate(45deg);margin-inline-end:4px;transition:transform .15s}
.fab-set[open]>summary::after{transform:rotate(-135deg)}
.fab-set[open]>summary{margin-bottom:2px}
.fab-set .tl-row{grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}
.fab-set .tl-row--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.fab-set .tl-f>input,.fab-set .tl-f>select{min-height:40px}
.fab-u{font-weight:600;color:var(--muted)}
.fab-note{font-size:12px;line-height:1.9;margin:0}
.fab-model{font-size:13px;margin:0;overflow-wrap:anywhere}
.fab-code{font:12px/1.6 var(--mono);text-align:left;min-height:120px;resize:vertical;width:100%}
.fab-file{position:relative;display:block;margin:0}
.fab-file input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}
.fab-file .btn{width:100%;min-height:44px}
.fab-file:has(input:focus-visible) .btn{outline:3px solid rgba(43,92,130,.45);outline-offset:2px}
.fab-tools{display:flex;flex-wrap:wrap;gap:6px}
.fab-chip{min-height:36px;padding:0 12px;border-radius:999px;border:1px solid var(--line);background:var(--paper);color:var(--ink);font:inherit;font-size:13px;font-weight:700;cursor:pointer}
.fab-chip:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}
.fab-chip:disabled{opacity:.45;cursor:default}

/* operations list (CAM) */
.fab-ops{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.fab-op{display:flex;align-items:center;gap:4px;border-radius:10px;background:var(--paper);box-shadow:inset 0 0 0 1px var(--line2);padding:4px 6px}
.fab-op.is-on{box-shadow:inset 0 0 0 2px var(--accent);background:var(--accent-s)}
.fab-op__c{flex:0 0 10px;height:10px;border-radius:50%;margin-inline:4px}
.fab-op__name{flex:1;min-width:0;text-align:right;background:none;border:0;font:inherit;font-size:13px;font-weight:700;color:var(--ink);padding:6px 2px;cursor:pointer;line-height:1.6}
.fab-op__x{flex:0 0 32px;height:32px;border-radius:8px;border:0;background:none;color:var(--ink2);font-size:16px;cursor:pointer}
.fab-op__x:hover:not(:disabled){background:var(--card);color:var(--accent)}
.fab-op__x:disabled{opacity:.3;cursor:default}
.fab [data-c="0"]{background:#2B5C82}.fab [data-c="1"]{background:#C2410C}.fab [data-c="2"]{background:#15803D}
.fab [data-c="3"]{background:#7C3AED}.fab [data-c="4"]{background:#B45309}.fab [data-c="5"]{background:#0E7490}

/* preview */
.fab__view{position:relative;height:clamp(320px,58vh,760px);border-radius:var(--r);overflow:hidden;background:#F4F2EE;box-shadow:inset 0 0 0 1px var(--line2);touch-action:none}
.fab__view canvas{display:block;width:100%;height:100%}
.fab__view.is-drag{box-shadow:inset 0 0 0 3px var(--accent)}
.fab__empty{position:absolute;inset:0;margin:0;display:grid;place-content:center;gap:6px;text-align:center;padding:24px;pointer-events:none;color:var(--ink2)}
.fab__empty b{font-size:17px}
.fab__empty span{font-size:13px;color:var(--muted);max-width:360px}
.fab__empty[hidden]{display:none}
.fab__layers{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;background:var(--card);border-radius:var(--r);box-shadow:var(--sh);padding:10px 14px}
.fab__layers[hidden],.fab__stats[hidden],.fab__warn[hidden]{display:none}
.fab__slider{flex:1 1 100%;display:grid;gap:4px;margin:0;font-size:13px;color:var(--ink2)}
.fab__slider input{width:100%;accent-color:var(--accent);margin:0}
.fab-check{display:inline-flex;align-items:center;gap:6px;margin:0;font-size:13px;font-weight:600;cursor:pointer}
.fab-check input{width:18px;height:18px;margin:0;accent-color:var(--accent)}
.fab-legend{flex:1 1 100%;display:flex;flex-wrap:wrap;gap:4px 14px;align-items:center;margin:0;font-size:12px;color:var(--muted)}
.fab-legend i{display:inline-block;width:16px;height:4px;border-radius:2px;margin-inline-end:5px;vertical-align:middle}
.fab-legend span{display:inline-flex;align-items:center}
.k-outer{background:#C2410C}.k-wall{background:#EA8A3A}.k-solid{background:#2B5C82}.k-infill{background:#5AA0C8}.k-skirt{background:#7C3AED}.k-travel{background:#D97706;opacity:.55}
.fab__stats{margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:8px}
.fab__stats div{background:var(--accent-s);border-radius:12px;padding:10px 12px}
.fab__stats dt{font-size:12px;color:var(--muted);font-weight:600}
.fab__stats dd{margin:0;font-weight:800;color:var(--accent-d)}
.fab__warn{margin:0;padding:10px 12px 10px 12px;padding-inline-start:28px;border-radius:10px;background:var(--amber-s);color:var(--amber);font-size:13px;font-weight:600;line-height:1.8}

/* sticky action bar */
.fab__bar{position:sticky;bottom:0;z-index:5;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 14px;background:var(--card);border-radius:var(--r) var(--r) 0 0;box-shadow:0 -6px 20px rgba(26,28,31,.10);padding:10px 14px;margin-inline:-4px}
.fab__status{flex:1 1 220px;display:grid;gap:4px;font-size:13px;font-weight:600;color:var(--ink2);min-width:0}
.fab__status progress{width:100%;height:8px;accent-color:var(--accent)}
.fab__status progress[hidden]{display:none}
.fab__status .is-bad{color:var(--red)}
.fab__btns{display:flex;gap:8px;flex-wrap:wrap}
.fab__btns .btn{min-height:44px;padding:0 18px}
.fab__btns .btn[hidden]{display:none}
.fab__btns .btn:disabled{opacity:.5;cursor:default}
.fab__mobile{flex:1 1 100%;margin:0;font-size:12px}

@media (min-width:1024px){
  .fab{grid-template-columns:minmax(330px,380px) minmax(0,1fr)}
  .fab__main{order:0;position:sticky;top:16px}
  .fab__view{height:clamp(480px,calc(100vh - 260px),820px)}
  .fab__bar{grid-column:1/-1;border-radius:var(--r);margin-inline:0}
  .fab__mobile{display:none}
}
@media (prefers-reduced-motion:reduce){.fab-set>summary::after{transition:none}}