/* aplicatie.css — stiluri proprii lecției „Inegalități cu operații mixte” (doar variabile de culoare). */

/* ---------- planșe desenate ---------- */
.plate .bl,.plate .ar-grup,.plate .sc-grup,.plate .ax,.plate .pc{
  background:var(--card);color:var(--ink);border-radius:12px;padding:14px;font-weight:800}
.ineg-mono{font-family:"Baloo 2",system-ui,sans-serif}

/* balanța: talerul cu valoarea mai mare coboară (--t: -1 stânga jos, 0 echilibru, 1 dreapta jos) */
.bl{--t:0}
.bl-scena{position:relative;height:178px;max-width:460px;margin:0 auto}
.bl-stalp{position:absolute;left:50%;top:30px;bottom:12px;width:10px;transform:translateX(-50%);background:var(--muted);border-radius:6px}
.bl-baza{position:absolute;left:50%;bottom:0;width:120px;height:14px;transform:translateX(-50%);background:var(--muted);border-radius:8px}
.bl-brat{position:absolute;left:22%;right:22%;top:26px;height:10px;border-radius:6px;background:var(--leaf-deep);transform:rotate(calc(var(--t) * 7deg));transition:transform .8s ease-in-out}
.bl-brat::after{content:"";position:absolute;left:50%;top:50%;width:18px;height:18px;border-radius:50%;background:var(--sun);border:3px solid var(--sun-edge);transform:translate(-50%,-50%)}
.bl-taler{position:absolute;top:31px;width:40%;display:flex;flex-direction:column;align-items:center;transition:transform .8s ease-in-out}
.bl-taler.st{left:5%;transform:translateY(calc(var(--t) * -15px))}
.bl-taler.dr{right:5%;transform:translateY(calc(var(--t) * 15px))}
.bl-fir{width:3px;height:22px;background:var(--muted)}
.bl-farf{width:100%;box-sizing:border-box;min-height:84px;border:3px solid var(--sky);border-top-width:5px;border-radius:6px 6px 46px 46px;background:var(--sky-tint);
  display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4px 6px 10px;text-align:center}
.bl-taler.dr .bl-farf{border-color:var(--sun-edge);background:var(--sun-tint)}
.bl-ex{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(19px * var(--fs));line-height:1.15;color:var(--ink)}
.bl-val{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(26px * var(--fs));line-height:1.1;color:var(--muted)}
.bl-taler.are .bl-val{color:var(--berry);animation:pop .35s ease-out}
.bl-semn{display:flex;align-items:center;justify-content:center;gap:14px;margin:8px 0 0;min-height:52px;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(30px * var(--fs))}
.bl-s{display:inline-flex;align-items:center;justify-content:center;width:50px;height:50px;border-radius:50%;border:3px dashed var(--line);color:var(--muted)}
.bl.gata .bl-s{border-style:solid;border-color:var(--berry);background:var(--berry-tint);color:var(--berry);animation:pop .4s ease-out}

/* arborele operațiilor (SVG) */
.ar svg{display:block;width:100%;height:auto;margin:0 auto}
.ar-l{stroke:var(--line);stroke-width:3}
.ar-f rect{fill:var(--sky-tint);stroke:var(--sky);stroke-width:2.5}
.ar text{font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;text-anchor:middle;dominant-baseline:middle;fill:var(--ink);font-size:20px}
.ar-n rect{fill:var(--card);stroke:var(--berry);stroke-width:2.5;stroke-dasharray:5 4;transition:fill .3s,stroke .3s}
.ar-n .ar-o{fill:var(--berry);font-size:24px;transition:opacity .3s}
.ar-n .ar-v,.ar-n .ar-b,.ar-n .ar-bo{opacity:0;transition:opacity .3s}
.ar-n.on rect{fill:var(--leaf-tint);stroke:var(--leaf);stroke-dasharray:none}
.ar-n.on .ar-o{opacity:0}
.ar-n.on .ar-v,.ar-n.on .ar-b,.ar-n.on .ar-bo{opacity:1}
.ar-n .ar-v{fill:var(--leaf-deep)}
.ar-b{fill:var(--berry)}
.ar text.ar-bo{fill:var(--card);font-size:13px}
.ar-n.cur{animation:arPop .45s ease-out;transform-box:fill-box;transform-origin:center}
.ar-cap{text-align:center;margin:4px 0 0;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(19px * var(--fs));white-space:nowrap}
.ar-res,.ar-q{display:inline-block;min-width:1.5em}
.ar-res{color:var(--leaf-deep);animation:pop .35s ease-out}
.ar-q{color:var(--muted)}
.ar:not(.gata) .ar-res,.ar.gata .ar-q{display:none}
.ar-grup.doi{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:end}
.ar-concl{grid-column:1/-1;margin:0;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(30px * var(--fs));color:var(--berry);opacity:0;transition:opacity .4s}
.ar-grup.gata .ar-concl{opacity:1}
@keyframes arPop{0%{transform:scale(.7)}70%{transform:scale(1.12)}100%{transform:none}}

/* scara calculului: un rând pentru fiecare pas */
.sc-grup{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.sc{border-left:5px solid var(--sky);padding:4px 8px 4px 12px}
.sc + .sc{border-left-color:var(--sun-edge)}
.sc-r{display:flex;align-items:center;gap:8px;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(25px * var(--fs));line-height:1.55;opacity:0;transition:opacity .35s}
.sc-r.on{opacity:1}
.sc-r.cur{animation:pop .4s ease-out}
.sc-eq{flex:0 0 .8em;color:var(--muted)}
.sc-e{white-space:nowrap}
.sc-u{position:relative;border-bottom:4px solid var(--berry);padding:0 2px}
.sc-op{color:var(--berry)}
.sc-r.fin .sc-e{background:var(--leaf);color:var(--on-leaf);border-radius:10px;padding:0 12px}

/* axa numerelor cu soluțiile */
.ax-ineq{margin:0 0 4px;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(28px * var(--fs))}
.ax svg{display:block;width:100%;height:auto}
.ax-l,.ax-t{stroke:var(--muted);stroke-width:2.5;fill:none}
.ax-c{fill:var(--card);stroke:var(--line);stroke-width:2.5;transition:fill .3s,stroke .3s}
.ax svg text{font-family:"Baloo 2",system-ui,sans-serif;text-anchor:middle;font-weight:800}
.ax-n{font-size:18px;fill:var(--ink)}
.ax-x{font-size:16px;fill:var(--berry);opacity:0}
.ax-p.on[data-ok="1"] .ax-c{fill:var(--leaf);stroke:var(--leaf-deep)}
.ax-p.on[data-ok="0"] .ax-c{stroke:var(--berry)}
.ax-p.on[data-ok="0"] .ax-x{opacity:1}
.ax-p.cur .ax-c{stroke-width:5}
.ax-cap{margin:4px 0 0;min-height:1.5em;text-align:center;font-size:calc(19px * var(--fs))}
.ax-cap .da{color:var(--leaf-deep)}
.ax-cap .nu{color:var(--berry)}

/* partea comună / pașii */
.pc-r{margin:4px 0;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(30px * var(--fs))}
.pc-c{background:var(--sky-tint);border:2px dashed var(--sky);border-radius:10px;padding:0 10px}
.pc-d{background:var(--sun);color:var(--on-sun);border-radius:10px;padding:0 10px}
.pc-s{margin:0;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(34px * var(--fs));line-height:1;color:var(--berry)}
.pc-n{margin:8px 0 0;text-align:center;color:var(--muted);font-size:calc(17px * var(--fs))}
.pc-p{display:flex;align-items:center;gap:12px;margin:12px 0;font-size:calc(20px * var(--fs))}
.pc-p b{flex:none;display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--sun);color:var(--on-sun);box-shadow:0 3px 0 var(--sun-edge)}

/* ---------- laborator: balanța pas cu pas ---------- */
.sb-top,.vs-top{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;font-weight:800;color:var(--muted);font-size:calc(14px * var(--fs))}
.sb-ghid{color:var(--sky)}
.sb-cols{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:6px}
.sb-col{min-width:0;border:3px solid var(--line);border-radius:14px;padding:6px 10px 8px;background:var(--card)}
.sb-col.gata{border-color:var(--leaf);background:var(--leaf-tint)}
.sb-et{display:block;font-size:calc(12px * var(--fs));font-weight:900;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.sb-ist{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(17px * var(--fs));line-height:1.35;color:var(--muted)}
.sb-u{color:var(--ink);border-bottom:3px solid var(--berry)}
.sb-cur{min-height:calc(50px * var(--fs));line-height:calc(50px * var(--fs));font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(23px * var(--fs));color:var(--ink);white-space:pre-wrap}
.sb-cur.pop{animation:pop .35s ease-out}
.sb-t{white-space:nowrap}
.sb-op{display:inline-flex;align-items:center;justify-content:center;min-width:calc(42px * var(--fs));height:calc(42px * var(--fs));margin:0 1px;padding:0 6px;border:3px solid var(--berry);border-radius:12px;background:var(--berry-tint);color:var(--berry);font:inherit;font-weight:900;cursor:pointer;box-shadow:0 4px 0 var(--berry)}
.sb-op:hover{transform:translateY(-2px)}
.sb-op.rau{animation:shake .45s}
.sb-rez{display:inline-block;padding:0 16px;border-radius:12px;background:var(--leaf);color:var(--on-leaf)}
.sb-semne{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:10px;padding-top:10px;border-top:2px dashed var(--line)}
.sb-sv{min-width:2.6em;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(25px * var(--fs));color:var(--ink)}
.sb .sb-s{justify-content:center;min-width:calc(62px * var(--fs));min-height:calc(50px * var(--fs));font-size:calc(26px * var(--fs));font-weight:900}
.sb .sb-s:disabled{opacity:.4;cursor:not-allowed}
.sb-made{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;min-height:26px;margin-top:8px}
.sb-gata{background:var(--leaf-tint);color:var(--leaf-deep);border:2px solid var(--leaf);border-radius:999px;padding:1px 12px;font-weight:800;font-size:calc(14px * var(--fs));animation:pop .35s ease-out}
.sb-made .btn{padding-top:4px;padding-bottom:4px}

/* ---------- laborator: vânătorul de soluții ---------- */
.vs-ineq{margin:6px 0 10px;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(32px * var(--fs));color:var(--ink)}
.vs-tiles{display:grid;grid-template-columns:repeat(11,minmax(0,1fr));gap:6px}
html.flow .vs-tiles{grid-template-columns:repeat(auto-fill,minmax(calc(46px * var(--fs)),1fr));gap:8px}
.vs-t{min-width:0;height:calc(50px * var(--fs));padding:0;border:3px solid var(--sky);border-radius:12px;background:var(--sky-tint);color:var(--ink);font:inherit;font-weight:900;font-size:calc(21px * var(--fs));box-shadow:0 4px 0 var(--sky);cursor:pointer}
.vs-t:hover{transform:translateY(-2px)}
.vs-t.ales{background:var(--leaf);border-color:var(--leaf-deep);color:var(--on-leaf);box-shadow:0 4px 0 var(--leaf-deep);transform:translateY(-3px)}
.vs-t:disabled{cursor:default}
.vs-proba{min-height:2.7em;margin:10px 0 6px;text-align:center;font-weight:700;font-size:calc(16px * var(--fs));color:var(--ink)}
.vs-act{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding-top:8px;border-top:2px dashed var(--line)}
.vs-act .verif{margin-left:auto}
.vs-nr{color:var(--muted);font-weight:800}

/* ---------- laborator: 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-cer{margin:10px 0 0;text-align:center;font-weight:800;color:var(--muted);font-size:calc(16px * var(--fs))}
.an-q{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(28px * var(--fs));font-weight:800;margin:6px 0 10px;color:var(--ink);text-align:center}
.an-q .gol,.an-cer .gol{display:inline-block;min-width:1.8em;border-bottom:3px dashed var(--leaf);text-align:center;color:var(--muted)}
.an-cer .gol{font-size:calc(22px * var(--fs))}
.gol.plin{border-bottom-style:solid;color:var(--leaf-deep);animation:pop .35s}
.an-var{justify-content:center}
.an-var .chip{font-size:calc(22px * var(--fs));min-width:3.2em;justify-content:center}
.an-msg{min-height:2.6em;margin:8px 0 0;text-align:center;font-weight:800;font-size:calc(15px * var(--fs))}
.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) sau mișcare redusă: ceasul din js/aplicatie.js arată starea completă */
html.a-still .bl-brat,html.a-still .bl-taler,html.a-still .sc-r,html.a-still .ar *{transition:none!important}
@media (prefers-reduced-motion: reduce){
  .bl-brat,.bl-taler,.sc-r,.ar *{transition:none!important}
  .bl-val,.bl-s,.ar-n,.ar-res,.sc-r,.sb-cur,.sb-gata,.an-scor,.an-serie,.gol,.sb-op,.vs-t{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}