/* aplicatie.css — stiluri proprii; folosește doar variabilele de culoare (var(--leaf), var(--sun), var(--ink) ...). */
/* stiluri proprii lecției „Înțelege parantezele în ecuații” (doar variabile de culoare). */

/* ---------- planșe desenate ---------- */
.plate .cu-grup,.plate .inc,.plate .mi-plansa,.plate .bal,.plate .mp-cum{
  background:var(--card);color:var(--ink);border-radius:12px;padding:14px 16px;font-weight:800}

/* cutiile: parantezele devin o cutie care se închide și se calculează prima */
.cu-grup.doi{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start}
.cu{display:grid;gap:4px;justify-items:start}
.cu-r{display:flex;align-items:center;gap:8px;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(26px * var(--fs));line-height:1.5;opacity:0;transition:opacity .35s}
.cu-r.on{opacity:1}
.cu-r.cur .cu-e{animation:aprinde .45s ease-out}
.cu-eq{flex:0 0 .7em;color:var(--muted)}
.cu-e{white-space:nowrap;display:inline-flex;align-items:center;gap:.28em}
.cu-o{color:var(--muted)}
.cu-o.acum{color:var(--berry)}
.cu-box{position:relative;display:inline-flex;align-items:center;gap:.28em;padding:0 .18em;border:3px dashed var(--line);border-radius:12px;line-height:1.25}
.cu-p{color:var(--berry);font-weight:900}
.cu-box.inchis{border-style:solid;border-color:var(--berry);background:var(--berry-tint)}
.cu-box.inchis::before{content:"1";position:absolute;top:-17px;left:calc(50% - 9px);width:18px;height:18px;border-radius:50%;background:var(--berry);color:var(--card);font:900 11px/18px "Nunito",system-ui,sans-serif;text-align:center}
.cu-box.inchide{animation:cuInchide .55s ease-out}
.cu-val{background:var(--berry-tint);border:3px solid var(--berry);border-radius:12px;padding:0 .3em;line-height:1.25;color:var(--ink)}
.cu-r.fin .cu-e{background:var(--leaf);color:var(--on-leaf);border-radius:10px;padding:0 12px}
.cu-r.fin .cu-e .cu-n{color:var(--on-leaf)}
.cu-not{margin:6px 0 0;font-size:calc(14px * var(--fs));color:var(--muted);font-weight:800}
.cu-not.ok{color:var(--leaf-deep);font-size:calc(18px * var(--fs))}
@keyframes cuInchide{0%{transform:scaleX(1.35);opacity:.3}60%{transform:scaleX(.94);opacity:1}100%{transform:none}}

/* încercările: fiecare loc al parantezelor, pe rând */
.inc{display:grid;gap:8px}
.inc-t{margin:0 0 4px;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(26px * var(--fs));text-align:center}
.inc-t b{color:var(--berry)}
.inc-r{display:flex;align-items:center;gap:10px;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(24px * var(--fs));padding:6px 12px;border-radius:12px;border:3px solid var(--line);opacity:0;transition:opacity .35s}
.inc-r.on{opacity:1}
.inc-r.cur{animation:aprinde .45s ease-out}
.inc-v{min-width:1.6em}
.inc-m{margin-left:auto;font-size:1.1em}
.inc-r.da{border-color:var(--leaf);background:var(--leaf-tint)} .inc-r.da .inc-m{color:var(--leaf-deep)}
.inc-r.nu .inc-m{color:var(--berry)}

/* mersul invers: a → cutia → rezultat, înapoi cu operațiile inverse */
.mi-ec{margin:0 0 10px;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(26px * var(--fs));text-align:center;display:flex;align-items:center;justify-content:center;gap:.28em}
.mi{display:grid;grid-template-columns:auto minmax(0,1fr) auto minmax(0,1fr) auto;align-items:center;gap:6px}
.mi-nod{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:calc(66px * var(--fs));height:calc(66px * var(--fs));box-sizing:border-box;border:3px dashed var(--line);border-radius:14px;background:var(--card);transition:background .3s,border-color .3s}
.mi-nod small{font-size:calc(12px * var(--fs));color:var(--muted);font-weight:800;line-height:1}
.mi-nod b{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(26px * var(--fs));line-height:1.1}
.mi-c{border-color:var(--berry)}
.mi-r{border-style:solid;border-color:var(--sky);background:var(--sky-tint)}
.mi-nod.on{border-style:solid;border-color:var(--leaf);background:var(--leaf-tint);animation:pop .4s ease-out}
.mi-c.on{border-color:var(--berry);background:var(--berry-tint)}
.mi-sag{display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;font-size:calc(15px * var(--fs));white-space:nowrap}
.mi-f{color:var(--sky);border-bottom:3px solid var(--sky);padding:0 4px}
.mi-b{color:var(--berry);border-top:3px dashed var(--berry);padding:0 4px;opacity:.2;transition:opacity .3s}
.mi-b.on{opacity:1;border-top-style:solid}
.mi-pasi{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:4px;font-size:calc(17px * var(--fs))}
.mi-pasi li{opacity:0;transition:opacity .35s}
.mi-pasi li.on{opacity:1}
.mi-pasi b{color:var(--leaf-deep)}

/* balanța cutiilor */
.bal{display:grid;gap:4px}
.bal-sc{position:relative;height:calc(112px * var(--fs));margin-bottom:6px}
.bal-brat{position:absolute;left:4%;right:4%;top:58%;height:6px;border-radius:3px;background:var(--muted)}
.bal-stalp{position:absolute;left:calc(50% - 4px);top:58%;width:8px;bottom:0;background:var(--muted);border-radius:4px}
.bal-st,.bal-dr{position:absolute;bottom:calc(42% + 6px);display:flex;gap:4px;align-items:flex-end}
.bal-st{left:4%} .bal-dr{right:8%}
.bal-c{border:3px solid var(--berry);background:var(--berry-tint);border-radius:10px;padding:2px 6px;font-size:calc(16px * var(--fs));white-space:nowrap}
.bal-n{border:3px solid var(--sky);background:var(--sky-tint);border-radius:10px;padding:2px 12px;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(24px * var(--fs))}
.bal p{margin:0;font-size:calc(18px * var(--fs));opacity:0;transition:opacity .35s}
.bal p.on{opacity:1}
.bal p.cur{animation:aprinde .45s ease-out}
.bal p b{color:var(--leaf-deep)}
.bal.cutie-ok .bal-c{background:var(--leaf-tint);border-color:var(--leaf)}

/* cum lucrezi în laboratorul „Mută parantezele” */
.mp-cum p{margin:8px 0;display:flex;align-items:center;gap:12px;font-size:calc(19px * var(--fs))}
.mp-pas{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--sun);color:var(--on-sun);box-shadow:0 3px 0 var(--sun-edge);font-weight:900}

/* ---------- laborator 1: Mută parantezele ---------- */
.mp-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))}
.mp-tinta{background:var(--sun-tint);color:var(--sun-ink);border-radius:999px;padding:2px 12px;font-size:calc(17px * var(--fs))}
.mp-tinta b{font-size:1.2em}
/* rândul cu numere: toate plăcuțele au aceeași înălțime și stau pe aceeași linie */
.mp-ex{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px;margin:14px 0 6px;min-height:calc(66px * var(--fs));font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(28px * var(--fs))}
.mp-o{color:var(--muted);font-weight:800}
.mp .mp-ex .chip.mp-n{min-width:calc(54px * var(--fs));height:calc(52px * var(--fs));display:inline-flex;align-items:center;justify-content:center;padding:0 10px;font:inherit;font-weight:800;color:var(--ink);background:var(--card);border:3px solid var(--stripe);border-radius:14px;box-shadow:0 5px 0 var(--stripe);cursor:pointer}
.mp .mp-ex .chip.mp-n:hover{transform:translateY(-2px)}
.mp .mp-ex .chip.mp-n.start{background:var(--sun);border-color:var(--sun-edge);color:var(--on-sun);box-shadow:0 5px 0 var(--sun-edge);transform:translateY(-3px)}
.mp-box{gap:8px;padding:4px 6px}
.mp .mp-ex .mp-box .chip.mp-n{border-color:var(--berry);box-shadow:0 5px 0 var(--berry)}
.mp-lant{margin:6px 0 0;min-height:1.6em;text-align:center;font-weight:800;font-size:calc(18px * var(--fs));color:var(--ink)}
.mp-lant.ok{color:var(--leaf-deep)}
.mp-act,.mv .grp{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-top:8px;padding-top:8px;border-top:2px dashed var(--line)}
.mp-act .verif{margin-left:auto}
.mp-act .verif:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* ---------- laborator 2: Mersul invers ---------- */
.mv-ce{color:var(--berry)}
.mv-mi{margin:8px 0 4px}
.mv-mi .mi-ec{font-size:calc(24px * var(--fs));margin-bottom:6px}
.mv-var{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:10px}
.mv .mv-var .chip{min-width:calc(96px * var(--fs));min-height:calc(48px * var(--fs));font-size:calc(20px * var(--fs));font-weight:800;color:var(--ink);border:3px solid var(--stripe);border-radius:14px;box-shadow:0 5px 0 var(--stripe)}
.mv .mv-var .chip.bad{animation:shake .45s;border-color:var(--berry)}
.mv-msg{margin:10px 0 0;min-height:1.5em;text-align:center;font-weight:800;font-size:calc(17px * var(--fs))}
.mv-msg .ok{color:var(--leaf-deep)}

/* ---------- laborator 3: 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(23px * var(--fs));font-weight:800;margin:12px 0;color:var(--ink);text-align:center}
.an-var{justify-content:center}
.an-var .chip{font-size:calc(19px * var(--fs));min-width:4.5em;font-weight:800}
.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 aprinde{0%{opacity:.2;transform:translateY(8px)}100%{opacity:1;transform:none}}
@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: totul se vede, nimic nu se mișcă */
html.a-still .cu-r,html.a-still .inc-r,html.a-still .mi-pasi li,html.a-still .bal p{opacity:1!important}
@media (prefers-reduced-motion: reduce){
  .cu-r,.inc-r,.mi-pasi li,.bal p{opacity:1!important}
  .cu-box,.cu-r .cu-e,.inc-r,.mi-nod,.bal p,.an-scor,.an-serie,.mv-var .chip{animation:none!important}
}

/* telefon: cutiile din planșele duble stau una sub alta */
html.flow .cu-grup.doi{grid-template-columns:minmax(0,1fr)}
html.flow .mi{gap:3px}
html.flow .mi-nod{min-width:calc(52px * var(--fs));height:calc(58px * var(--fs))}
html.flow .mi-nod b{font-size:calc(22px * var(--fs))}
html.flow .mi-sag{font-size:calc(12px * var(--fs));white-space:normal;min-width:0}
.mi-f,.mi-b{max-width:100%;overflow-wrap:anywhere}

/* în egalitatea cu necunoscută, cutia e închisă, dar fără bulina „1” */
.mi-ec .cu-box::before{display:none}

/* 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}