/* aplicatie.css — stiluri proprii lecției „Dreptunghiuri cu același perimetru sau aceeași arie” (doar variabile de culoare). */

/* ---------- planșe desenate: fundal de card, lizibil în toate stilurile ---------- */
.plate .mf,.plate .cv,.plate .jm,.plate .dv,.plate .bc,.plate .rf,.plate .it,.plate .ss,.plate .sf-host,.plate .pq-host,.plate .fm-host{
  background:var(--card);color:var(--ink);border-radius:12px;padding:14px;font-weight:800}

/* SVG comun: rețea, dreptunghi, contur, cote */
.dr-svg{display:block;max-width:100%;height:auto;margin:0 auto;overflow:visible}
.dr-gl line{stroke:var(--line);stroke-width:.04}
.dr-in{fill:var(--leaf-tint)}
.dr-gi line{stroke:var(--leaf);stroke-width:.035;opacity:.7}
.dr-o{fill:none;stroke:var(--berry);stroke-width:.13;stroke-linejoin:round}
.dr-dim{font-size:.55px;font-weight:800;fill:var(--ink);text-anchor:middle;font-family:"Nunito",system-ui,sans-serif}
.dr-dl{text-anchor:end}

/* ---------- copertă: cele două familii, din același colț ---------- */
.cv{display:grid;gap:12px}
.cv-f{display:grid;grid-template-columns:auto 1fr;align-items:center;column-gap:14px;row-gap:2px}
.cv-h{grid-column:1/-1;margin:0;font-size:calc(16px * var(--fs));color:var(--muted)}
.cv-h b{color:var(--ink)}
.cv-svg{display:block;max-width:100%;height:auto;overflow:visible}
.cv-r{fill:none;stroke:var(--muted);stroke-width:.07;stroke-dasharray:.25 .15;transition:fill .4s,stroke .4s}
.cv-r.on{fill:var(--leaf-tint);fill-opacity:.85;stroke:var(--berry);stroke-width:.16;stroke-dasharray:none}
.cv-t{margin:0;font-size:calc(17px * var(--fs));line-height:1.3}
.cv-d{display:inline-block;min-width:3.2em;background:var(--sun-tint);border-radius:8px;padding:0 6px;text-align:center}
.cv-x{color:var(--berry)}
html.flow .cv-f{grid-template-columns:minmax(0,1fr)}

/* ---------- sfoara și pătrățelele: scenă pe rețea, colțul stânga-jos fix ---------- */
.mf{container-type:inline-size;display:grid;gap:10px}
.mf-sus{display:flex;flex-direction:column;align-items:center;gap:10px}
.mf-sc{--u:min(34px, calc((100cqw - 70px) / var(--w)));position:relative;width:calc(var(--w) * var(--u));height:calc(var(--h) * var(--u));
  margin:26px 0 0 52px;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:var(--u) var(--u);background-position:0 100%;border-right:1px solid var(--line);border-top:1px solid var(--line)}
.mf-r{position:absolute;left:0;bottom:0;width:calc(var(--L) * var(--u));height:calc(var(--l) * var(--u));box-sizing:border-box;
  background-color:var(--leaf-tint);background-image:linear-gradient(var(--leaf) 1px,transparent 1px),linear-gradient(90deg,var(--leaf) 1px,transparent 1px);
  background-size:var(--u) var(--u);background-position:0 100%;outline:4px solid var(--berry);outline-offset:-2px;border-radius:2px}
.mf.anim .mf-r,.sf-r,.pq-o{transition:width .9s ease-in-out,height .9s ease-in-out}
.mf-L,.mf-l{position:absolute;font-size:calc(15px * var(--fs));font-weight:900;color:var(--ink);white-space:nowrap;line-height:1}
.mf-L{left:0;right:0;bottom:calc(100% + 7px);text-align:center}
.mf-l{right:calc(100% + 8px);top:50%;transform:translateY(-50%)}
.mf-info{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.mf-info span{border-radius:999px;padding:4px 14px;font-size:calc(16px * var(--fs));border:2px solid}
.mf-fix{border-color:var(--berry);background:var(--berry-tint);color:var(--berry)}
.mf-var{border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep)}
.mq .mf-fix{border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep)}
.mq .mf-var{border-color:var(--berry);background:var(--berry-tint);color:var(--berry)}
/* pătrățelele se mută una câte una; conturul arată perimetrul */
.mq-c{position:absolute;left:calc(var(--x, 0) * var(--u));bottom:calc(var(--y, 0) * var(--u));width:var(--u);height:var(--u);box-sizing:border-box;
  border:3px solid var(--card);border-radius:5px;background:var(--leaf)}
.mf.anim .mq-c,.pq-sc .mq-c{transition:left .8s ease-in-out,bottom .8s ease-in-out;transition-delay:calc(var(--i) * 22ms)}
.mq-o{background:none!important;outline-color:var(--berry);z-index:1;pointer-events:none}
/* tabelul care se completează */
.mf-tab{display:grid;gap:4px;font-size:calc(16px * var(--fs))}
.mf-th,.mf-tr{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));align-items:center;text-align:center;border-radius:10px}
.mf-th{color:var(--muted);font-size:calc(14px * var(--fs))}
.mf-tr{min-height:calc(30px * var(--fs));background:var(--sky-tint);border:2px solid transparent;visibility:hidden}
.mf-tr.vaz{visibility:visible;animation:mf-in .35s ease-out}
.mf-tr.acum{border-color:var(--sun-edge);background:var(--sun-tint)}
.mf-tr.max{border-color:var(--leaf);background:var(--leaf-tint)}
.mf-tr.max .mf-a::after{content:" ⭐"}
.mf-a{color:var(--berry);white-space:nowrap}
@keyframes mf-in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- stația 3: jumătate de sfoară ---------- */
.jm{text-align:center}
.jm-svg{display:block;width:min(100%,360px);height:auto;margin:0 auto;overflow:visible}
.jm-in{fill:var(--leaf-tint)}
.jm-a,.jm-b{fill:none;stroke-width:.2;stroke-linecap:round;stroke-linejoin:round}
.jm-a{stroke:var(--sky)} .jm-b{stroke:var(--berry);stroke-dasharray:.35 .18}
.jm-t{font-size:.52px;font-weight:900;text-anchor:middle;font-family:"Nunito",system-ui,sans-serif}
.jm-t.a{fill:var(--sky)} .jm-t.b{fill:var(--berry)}
.jm-ec{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:6px}
.jm-x{border-radius:999px;padding:3px 12px;font-size:calc(16px * var(--fs));border:2px solid}
.jm-x.a{border-color:var(--sky);background:var(--sky-tint);color:var(--sky)}
.jm-x.b{border-color:var(--berry);background:var(--berry-tint);color:var(--berry)}
.jm-f{margin:12px 0 0;font-size:calc(21px * var(--fs))}
.jm-f b{background:var(--sun);color:var(--on-sun);border-radius:10px;padding:0 10px}

/* ---------- stația 4: încerc lățimile pe rând ---------- */
.dv{display:grid;gap:6px}
.dv-h{margin:0 0 4px;font-size:calc(17px * var(--fs))}
.dv-r{display:grid;grid-template-columns:2.2em 1fr auto;align-items:center;gap:10px;border-radius:10px;padding:5px 12px;font-size:calc(17px * var(--fs))}
.dv-r b{display:inline-flex;align-items:center;justify-content:center;height:1.7em;border-radius:8px;background:var(--card);border:2px solid var(--line)}
.dv-r.ok{background:var(--leaf-tint)} .dv-r.ok em{color:var(--leaf-deep)}
.dv-r.nu{background:var(--berry-tint);color:var(--muted)} .dv-r.nu em{color:var(--berry)}
.dv-r.rep{background:var(--sun-tint)} .dv-r.rep em{color:var(--sun-ink)}
.dv-r em{font-style:normal;font-weight:900}

/* ---------- stațiile 7 și 8: bare ---------- */
.bc{display:grid;gap:8px}
.bc-h{margin:0 0 4px;font-size:calc(17px * var(--fs))}
.bc-r{display:grid;grid-template-columns:4.2em 1fr 5.4em;align-items:center;gap:10px;font-size:calc(17px * var(--fs))}
.bc-n{text-align:right}
.bc-b{height:calc(26px * var(--fs));background:var(--paper);border:2px solid var(--line);border-radius:8px;overflow:hidden}
.bc-b i{display:block;height:100%;background:var(--sky);border-radius:6px}
.bc.per .bc-b i{background:var(--berry)}
.bc-r.max .bc-b i{background:var(--leaf)}
.bc-r.max .bc-v,.bc-r.max .bc-n{color:var(--leaf-deep)}

/* ---------- stația 9: dreptunghiul de referință ---------- */
.rf{--dru:44px;display:grid;gap:12px;justify-items:center}
.rf-et{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.rf-et span{border-radius:999px;padding:4px 14px;font-size:calc(17px * var(--fs));border:2px solid}
.rf-p{border-color:var(--berry);background:var(--berry-tint);color:var(--berry)}
.rf-a{border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep)}

/* ---------- stația 10: întors e tot el ---------- */
.it{--dru:30px;text-align:center}
.it-r{display:flex;align-items:flex-end;justify-content:center;gap:18px}
.it-r .dr-svg{margin:0}
.it-s{font-size:calc(40px * var(--fs));color:var(--sky);align-self:center}
.it-t{margin:10px 0 0;font-size:calc(18px * var(--fs))}
.it-t b{color:var(--leaf-deep)}

/* ---------- stația 12: în ordine ---------- */
.ss{text-align:center}
.ss-h{margin:0 0 12px;font-size:calc(20px * var(--fs))}
.ss-l{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.ss-c{border-radius:12px;padding:8px 12px;background:var(--leaf-tint);border:2px solid var(--leaf);font-size:calc(18px * var(--fs))}
.ss-c b{color:var(--sky)}
.ss-c.rep{background:var(--sun-tint);border-color:var(--sun-edge);border-style:dashed}
.ss-t{margin:12px 0 0;font-size:calc(16px * var(--fs));color:var(--muted)}

/* ---------- laboratoarele 1 și 2: planșa cu scena și tabelul ---------- */
.sf-host,.pq-host{container-type:inline-size;display:grid;gap:8px}
.sf-h{margin:0;text-align:center;font-size:calc(18px * var(--fs))}
.sf-host .mf-sc{--u:min(26px, calc((100cqw - 70px) / var(--w)));justify-self:center;margin-left:52px}
.sf-r.gol{visibility:hidden}
.sf-tab .mf-tr{visibility:visible}
.sf-rows,.pq-rows{display:grid;gap:4px}
button.sf-tr{width:100%;opacity:1;font:inherit;font-weight:800;color:var(--ink);cursor:pointer;min-height:calc(31px * var(--fs));border:3px solid var(--line);background:var(--sky-tint)}
button.sf-tr:disabled{cursor:default;color:var(--ink)}
button.sf-tr:not(:disabled):hover{border-color:var(--sky)}
button.sf-tr.ales{border-color:var(--berry);background:var(--berry-tint)}
button.sf-tr:disabled.ales{border-color:var(--leaf);background:var(--leaf-tint)}
.pq-wrap{display:flex;justify-content:center}
.pq-sc{--u:min(21px, calc((100cqw - 70px) / var(--w)))}
.pq-o.rupt{outline-style:dashed;outline-color:var(--muted)}
.pq-info{margin:0;text-align:center;font-size:calc(15px * var(--fs));min-height:1.4em}
.pq-info.bun{color:var(--leaf-deep)} .pq-info.rau{color:var(--berry)}
.pq-gol{margin:4px 0;text-align:center;color:var(--muted);font-size:calc(15px * var(--fs))}

/* comenzile din stânga (laboratoarele 1 și 2) */
.sf-q,.pq-q{margin:0 0 10px;font-size:calc(18px * var(--fs));font-weight:800;color:var(--ink);line-height:1.3}
.sf-var:empty{display:none}
.sf-var{display:flex;gap:10px;flex-wrap:wrap;min-height:calc(50px * var(--fs))}
.sf .chip.sf-c,.pq .chip.pq-c{min-width:calc(64px * var(--fs));min-height:calc(48px * var(--fs));justify-content:center;font-size:calc(19px * var(--fs));font-weight:800;
  color:var(--ink);border:3px solid var(--stripe);border-radius:14px;box-shadow:0 5px 0 var(--stripe);cursor:pointer}
.sf .chip.sf-c:hover,.pq .chip.pq-c:hover{transform:translateY(-2px)}
.sf .chip.sf-c.bad{animation:shake .45s;border-color:var(--berry)}
.pq .chip.pq-c{min-width:calc(46px * var(--fs))}
.pq .chip.pq-c.ales{background:var(--berry);border-color:var(--berry);color:var(--card);box-shadow:0 5px 0 var(--ink);transform:translateY(-3px)}
.pq-rd{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.pq-et{font-weight:900;color:var(--muted)}
.pq-var{display:flex;gap:8px;flex-wrap:wrap}
.sf-st,.pq-st{margin:10px 0 0;min-height:1.4em;font-weight:800;font-size:calc(15px * var(--fs))}
.sf-st.bun,.pq-st.bun{color:var(--leaf-deep)} .sf-st.rau,.pq-st.rau{color:var(--berry)}
.sf-act,.pq-act,.fm-act{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-top:10px;padding-top:10px;border-top:2px dashed var(--line)}
.sf-act .verif,.pq-act .verif,.fm-act .verif{margin-left:auto}
.sf-act .verif:disabled,.pq-act .verif:disabled,.fm-act .verif:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* ---------- laboratorul 3: familii ---------- */
.fm-pool{display:flex;flex-wrap:wrap;gap:8px;min-height:calc(46px * var(--fs));align-items:center}
.fm-gol{color:var(--muted);font-weight:800}
.fm .chip.fm-c{min-height:calc(40px * var(--fs));padding:4px 12px;font-size:calc(16px * var(--fs));font-weight:800;color:var(--ink);border:3px solid var(--stripe);border-radius:12px;box-shadow:0 4px 0 var(--stripe);cursor:pointer}
.fm .chip.fm-c.ales{background:var(--sun);border-color:var(--sun-edge);color:var(--on-sun);box-shadow:0 4px 0 var(--sun-edge);transform:translateY(-3px)}
.fm .chip.fm-c.bad{border-color:var(--berry);animation:shake .45s}
.fm-cosuri{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:12px}
.fm-cos{border:3px dashed var(--line);border-radius:14px;padding:6px;min-height:calc(110px * var(--fs));cursor:pointer;display:flex;flex-direction:column;gap:6px}
.fm-cos:hover,.fm-cos:focus-visible{border-style:solid;outline:none}
.fm-cos.c0{border-color:var(--berry);background:var(--berry-tint)}
.fm-cos.c1{border-color:var(--leaf);background:var(--leaf-tint)}
.fm-cos.c2{border-color:var(--sky);background:var(--sky-tint)}
.fm-ct{margin:0;text-align:center;font-weight:900;font-size:calc(14px * var(--fs));line-height:1.2}
.fm-cos.c0 .fm-ct{color:var(--berry)} .fm-cos.c1 .fm-ct{color:var(--leaf-deep)} .fm-cos.c2 .fm-ct{color:var(--sky)}
.fm-in{display:flex;flex-direction:column;gap:5px;align-items:stretch}
.fm-in .chip.fm-c{min-height:calc(32px * var(--fs));font-size:calc(14px * var(--fs));padding:2px 6px;justify-content:center;box-shadow:0 3px 0 var(--stripe)}
.fm-host{display:grid;gap:12px;--dru:34px;container-type:inline-size}
.fm-id{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.fm-id span{border-radius:999px;padding:4px 14px;font-size:calc(16px * var(--fs));border:2px solid}
.fm-ip{border-color:var(--berry);background:var(--berry-tint);color:var(--berry)}
.fm-ia{border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep)}
.fm-des{min-height:150px;display:flex;align-items:center;justify-content:center}
.fm-hint{margin:0;color:var(--muted);font-size:calc(17px * var(--fs))}
html.flow .fm-cosuri{grid-template-columns:minmax(0,1fr)}
html.flow .fm-cos{min-height:calc(70px * var(--fs))}

/* ---------- laboratorul 4: antrenament rapid ---------- */
.an-top{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--muted);font-size:calc(14px * var(--fs))}
.an-bar{flex:1;height:10px;background:var(--line);border-radius:99px;overflow:hidden}
.an-bar i{display:block;height:100%;background:var(--leaf);transition:width .4s}
.an-serie{transition:transform .2s}
.an-serie.aprinsa{color:var(--berry);animation:pop .4s ease-out}
.an-q{font-size:calc(21px * var(--fs));font-weight:800;margin:12px 0;color:var(--ink);text-align:center;line-height:1.3}
.an-var{justify-content:center}
.an-var .chip{font-size:calc(18px * var(--fs));min-width:5.5em;justify-content:center}
.an-msg{min-height:1.5em;margin:8px 0 0;text-align:center;font-weight:800}
.an-msg.bine{color:var(--leaf-deep)} .an-msg.rau{color:var(--berry)}
.an-final{text-align:center}
.an-scor{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(54px * var(--fs));color:var(--leaf-deep);animation:pop .5s}

@keyframes pop{0%{transform:scale(.6)}70%{transform:scale(1.15)}100%{transform:none}}
@keyframes shake{0%,100%{transform:none}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}

/* fără animații (accesibilitate) și mișcare redusă: figurile rămân în starea completă, fără tranziții */
html.a-still .mf-r,html.a-still .mq-c,html.a-still .mf-tr,html.a-still .cv-r{transition:none!important;animation:none!important}
@media (prefers-reduced-motion: reduce){
  .mf-r,.mq-c,.mf-tr,.cv-r,.an-scor,.an-serie,.sf-c,.fm-c{transition:none!important;animation:none!important}
}

/* Butonul „Verifică” din bara de jos este ascuns; verificarea se deschide din cuprins sau după ultima stație. */
.bottom #checkBtn{display:none!important}

/* ===== aliniere comună (lecțiile refăcute): fără suprapuneri de butoane și text ===== */
/* plasă de siguranță: dacă o stație e mai înaltă decât scena, se derulează în interior, nu intră sub bara de jos */
html:not(.flow) .view.on{overflow-y:auto;overflow-x:hidden;scrollbar-width:thin}
/* ordonare: toate cartonașele pe un rând, loc pentru bulina cu numărul, textul rămâne în cartonaș */
.task .order{grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);grid-template-columns:none;gap:10px;margin-top:16px}
.task .order .ocard{min-width:0;padding:10px 6px 8px;overflow-wrap:anywhere;hyphens:auto}
.task .order .oc-emoji{font-size:2.1em;line-height:1.1}
.task .order .ocard .lab{font-size:calc(14px * var(--fs));line-height:1.2}
.task .order .ocard .more{font-size:calc(12px * var(--fs));line-height:1.2;color:var(--muted)}
.task .order .ocard .badge{top:-14px;left:-8px}
html.flow .task .order{grid-auto-flow:row;grid-template-columns:repeat(2,minmax(0,1fr))}
/* perechi: bulina cu numărul stă pe același rând cu textul, deci butonul nu crește după rezolvare */
.perechi .chip{display:flex;align-items:center;gap:8px;min-width:0;overflow-wrap:anywhere}
.perechi .chip[data-p]::after{flex:0 0 22px}
/* rânduri de butoane: se rup pe rândul următor în loc să se calce */
.grp,.chips,.actions{flex-wrap:wrap;row-gap:10px}
.chip,.btn{max-width:100%}
.btn{white-space:normal}