/* The BUILDS app: the catalogue and the 3D page of a build. Same colours as the site (site.css variables). */
.bfilter{display:flex;flex-wrap:wrap;gap:10px 18px;align-items:center;margin:4px 0 18px}
.brow{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.brow .lbl{color:var(--dim);font:700 10px Inter,sans-serif;letter-spacing:.16em;text-transform:uppercase;margin-right:4px}
.bfilter button{font:600 13px/1 Inter,sans-serif;letter-spacing:.06em;color:var(--soft);background:var(--panel);border:1px solid var(--line);border-radius:999px;padding:9px 15px;cursor:pointer}
.bfilter button.on{background:var(--red);border-color:var(--red);color:#fff}
.bsearch{display:flex;align-items:center;gap:12px;margin:6px 0 14px;padding:0 18px;background:var(--panel);border:1px solid var(--line);border-radius:14px;transition:border-color .15s,box-shadow .15s}
.bsearch:focus-within{border-color:var(--red);box-shadow:0 0 0 3px var(--glow)}
.bsearch svg{width:20px;height:20px;color:var(--muted);flex:none}
.bsearch input{flex:1;min-width:0;background:none;border:0;outline:0;color:var(--text);padding:15px 0;font:16px Inter,sans-serif}
.bgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:16px}
.bcard{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:14px;overflow:hidden;color:var(--text);transition:transform .15s,border-color .15s}
.bcard:hover{transform:translateY(-3px);border-color:var(--edge);text-decoration:none}
.bthumb{position:relative;aspect-ratio:1;background:#2a2a2d}.bthumb img{width:100%;height:100%;object-fit:cover;display:block}
.bbadge{position:absolute;left:10px;top:10px;font:700 11px/1 Inter,sans-serif;letter-spacing:.14em;padding:7px 9px;border-radius:7px;background:#000a;color:#fff}

.btxt{padding:12px 14px 14px}.btxt h3{margin:0 0 6px;font-size:20px}.btxt p{margin:0 0 10px;color:var(--muted);font-size:13px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.bmeta{display:flex;flex-wrap:wrap;gap:6px}.bmeta span{font-size:11.5px;color:var(--soft);background:var(--panel2);border:1px solid var(--line);padding:4px 8px;border-radius:6px}
.d.easy{color:#6fdc6f!important}.d.medium{color:#ffc23d!important}.d.hard{color:#ff8a3d!important}.d.expert{color:var(--red2)!important}
.bnone{color:var(--muted)}
/* the page of a build */
.bview{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:16px;align-items:start}
.bstage{position:relative;height:min(74vh,760px);min-height:420px;border-radius:16px;overflow:hidden;border:1px solid var(--line);background:radial-gradient(ellipse 80% 70% at 50% 45%,#4a4a4f 0%,#2f2f33 55%,#1b1b1e 100%)}
.bstage canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;cursor:grab}
.bexpand{position:absolute;right:14px;top:66px;z-index:2;display:flex;align-items:center;gap:7px;font:600 13px/1 Inter,sans-serif;color:#fff;background:#141416d9;border:1px solid #ffffff2a;border-radius:9px;padding:9px 12px}
.bexpand:hover{background:var(--red);border-color:var(--red);text-decoration:none}.blearn{top:112px}.bexpand .ico{width:14px;height:14px;fill:currentColor}
/* while the build downloads: its picture, dimmed, and a line of text (builds.js removes it) */
.bload{position:absolute;inset:0;z-index:3;display:flex;align-items:flex-end;justify-content:center;padding-bottom:22%;background:#1b1b1e}
.bload img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;opacity:.45}
.bload span{position:relative;font:500 16px var(--px);color:#fff;background:#141416e0;border:1px solid #ffffff1f;border-radius:10px;padding:9px 14px}
.bload:not(.failed) span:after{content:"";display:inline-block;width:8px;height:8px;margin-left:10px;background:var(--red);animation:bblink .8s steps(2) infinite}
.bload.failed span{border-color:var(--red)}
@keyframes bblink{50%{opacity:0}}
.bhud{position:absolute;left:14px;top:14px;right:14px;display:flex;justify-content:space-between;gap:10px;pointer-events:none}
.bhud .lab{background:#141416d9;border:1px solid #ffffff1f;border-radius:12px;padding:9px 13px;max-width:70%}
.bhud .lab b{display:block;font-family:var(--px);font-weight:500;font-size:19px;color:#fff}.bhud .lab span{font-size:12.5px;color:#c9c8cc}
.bhud .k{background:#141416d9;border:1px solid #ffffff1f;border-radius:12px;padding:9px 13px;font-family:var(--px);font-size:18px;color:#fff;white-space:nowrap;align-self:flex-start}
.bctrl{position:absolute;left:12px;right:12px;bottom:12px;display:flex;align-items:center;gap:8px;background:#141416e0;border:1px solid #ffffff1f;border-radius:14px;padding:8px 10px}
.bctrl button{font:600 13px/1 Inter,sans-serif;color:#fff;background:#ffffff14;border:1px solid #ffffff22;border-radius:9px;padding:9px 12px;cursor:pointer;white-space:nowrap}
.bctrl button.on,.bctrl #bplay{background:var(--red);border-color:var(--red)}
.bctrl input[type=range]{flex:1;accent-color:var(--red)}
.stepsonly,.layersonly{display:contents}.bview.layers .stepsonly,.bview:not(.layers) .layersonly{display:none}
.bmode{display:flex;gap:4px;margin-left:4px}
.bpanel{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px}
.bpanel h1{margin:0 0 2px;font-size:30px}.bpanel .series{font-size:11.5px;letter-spacing:.2em;color:var(--red2);font-weight:700}
.bpanel p{color:var(--muted);font-size:13.5px;line-height:1.5;margin:10px 0 14px}
.bstats{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px}
.bstats div{background:var(--panel2);border:1px solid var(--line);border-radius:10px;padding:9px 11px}
.bstats small{display:block;font-size:10.5px;letter-spacing:.18em;color:var(--muted);font-weight:700}.bstats b{font-family:var(--px);font-weight:500;font-size:20px}
.btabs{display:flex;gap:6px;margin-bottom:8px}.btabs button{flex:1;font:600 12.5px Inter,sans-serif;color:var(--soft);background:var(--panel2);border:1px solid var(--line);border-radius:9px;padding:8px;cursor:pointer}
.btabs button.on{background:var(--red);border-color:var(--red);color:#fff}
#bmats{list-style:none;margin:0;padding:0;max-height:340px;overflow:auto}
#bmats li{display:flex;align-items:center;gap:10px;padding:6px 8px;border-radius:9px}#bmats li:nth-child(odd){background:var(--panel2)}
#bmats img{width:28px;height:28px;image-rendering:pixelated}#bmats span{flex:1;font-size:13.5px}#bmats b{font-family:var(--px);font-weight:500;color:var(--red2)}
#bmats li.none{color:var(--muted)}
.blinks{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.blinks a{font-size:13px;font-weight:600;border:1px solid var(--line);border-radius:9px;padding:8px 11px;color:var(--text)}
.bhelp{font-size:12px;color:var(--dim);margin-top:10px}
@media (max-width:900px){.bview{grid-template-columns:1fr}.bstage{height:62vh}.bmode{display:none}}

/* Explore: the filters appear under the search bar only once it is used */
.bapp[data-catalogue] .bfilter{display:none}
.bapp[data-catalogue].searching .bfilter{display:flex;animation:bfin .18s ease-out}
@keyframes bfin{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
/* phones: two builds a row, compact cards */
@media (max-width:600px){
.bgrid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.bcard{border-radius:11px}
.bbadge{left:6px;top:6px;font-size:9px;padding:5px 6px;letter-spacing:.1em}
.btxt{padding:8px 9px 10px}.btxt h3{font-size:14px;margin:0 0 4px}
.btxt p{display:none}
.bmeta{gap:4px}.bmeta span{font-size:10px;padding:3px 5px}
}

/* under a build's page, folded: how to build it, in words (tools/build.py guide()) */
.bguide{margin-top:16px;background:var(--panel,#141418);border:1px solid var(--line);border-radius:14px}
.bguide summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:14px 18px}
.bguide summary::-webkit-details-marker{display:none}
.bguide summary:after{content:"+";margin-left:auto;font:700 20px/1 Inter,sans-serif;color:var(--muted)}.bguide[open] summary:after{content:"\2212"}
.bguide summary h2{margin:0;font:500 19px var(--px)}.bguide summary span{font-size:13px;color:var(--muted)}
.bguidein{padding:0 18px 16px;color:var(--soft);font-size:14px;line-height:1.55;max-width:860px}
.bguidein h3{margin:14px 0 6px;font:800 11px Inter,sans-serif;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.bguidein p{margin:0 0 8px}.bguidein dl{margin:0}.bguidein dt{font-weight:700;color:var(--text);margin-top:8px}.bguidein dd{margin:2px 0 0}.bguidein small{color:var(--muted)}
.bguidein ol{margin:0;padding-left:22px}.bguidein li{margin:3px 0}.bgmore{margin-top:8px!important;color:var(--muted)}
.bguidein .btn{margin-top:8px}


/* the free full lesson of the month: its badge in Explore */
.bfreetag{position:absolute;right:8px;bottom:8px;font:800 10.5px Inter,sans-serif;letter-spacing:.08em;color:#1a1200;background:#ffc23d;border-radius:7px;padding:4px 8px;box-shadow:0 4px 14px #0007}
.bcard.bfreel{border-color:#ffc23d88}
/* the steps after the free ones (builds.js lockOn): the bar striped and a lock from where they start */
.brange{position:relative;flex:1;display:flex;align-items:center;min-width:0;--x:calc(8px + (100% - 16px) * var(--at))}
.brange input[type=range]{flex:1;min-width:0}
.brange::after{content:"";position:absolute;left:var(--x);right:2px;top:50%;height:8px;transform:translateY(-50%);border-radius:4px;pointer-events:none;
	background:repeating-linear-gradient(135deg,#55555f 0 5px,#2c2c33 5px 10px)}
.bctrl .block{position:absolute;left:var(--x);top:50%;transform:translate(-50%,-50%);z-index:1;width:28px;height:28px;padding:0;display:grid;place-items:center;
	border-radius:50%;background:#ffc23d;border-color:#ffc23d;color:#1a1300}
.bctrl .block svg{width:15px;height:15px}.bctrl .block:hover{filter:brightness(1.08)}