/* aplicatie.css — stiluri proprii lecției „Ecuații pentru adunare și scădere în mai mulți pași” (doar variabile de culoare). */

/* titlul lung al copertei: mai mic, ca butoanele să rămână deasupra barei de jos */
html:not(.flow) .cover h1{font-size:3.1em}

/* ---------- planșe desenate ---------- */
.plate .card-ink{background:var(--card);color:var(--ink);border-radius:12px;padding:14px 16px;font-weight:800}
/* „?” în cutie, oriunde apare într-o egalitate */
.ec-q{display:inline-flex;align-items:center;justify-content:center;min-width:1.5em;height:1.35em;padding:0 4px;box-sizing:border-box;border:3px dashed var(--berry);border-radius:8px;background:var(--berry-tint);color:var(--berry);font-style:normal;font-weight:900;line-height:1;vertical-align:middle}
.ec-q.plin{border-style:solid;border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep)}
.eq{font-family:"Baloo 2",system-ui,sans-serif;white-space:nowrap}

/* ---------- balanța în echilibru ---------- */
.bl{position:relative;padding:6px 4px 0;font-family:"Baloo 2",system-ui,sans-serif}
.bl-arm{display:grid;grid-template-columns:1.7fr 1fr;column-gap:18px;align-items:end;transform-origin:50% 100%;transition:transform .7s cubic-bezier(.4,1.6,.5,1)}
.bl[data-tilt="st"] .bl-arm{transform:rotate(-5deg)}
.bl[data-tilt="dr"] .bl-arm{transform:rotate(5deg)}
.bl-pan{display:flex;align-items:center;justify-content:center;gap:6px;min-height:calc(58px * var(--fs));padding:6px 8px 8px;border-bottom:6px solid var(--sky);border-radius:0 0 999px 999px / 0 0 26px 26px;background:var(--sky-tint);flex-wrap:nowrap}
.bl-dr{border-bottom-color:var(--sun-ink);background:var(--sun-tint)}
.bl-beam{grid-column:1/-1;height:8px;border-radius:8px;background:var(--muted);margin-top:4px}
.bl-post{width:0;height:0;margin:0 auto;border-left:22px solid transparent;border-right:22px solid transparent;border-bottom:44px solid var(--muted)}
.bl-base{width:130px;height:10px;margin:0 auto;border-radius:8px;background:var(--muted)}
.bl-n,.bl-s,.bl-q{display:inline-flex;align-items:center;justify-content:center;height:calc(40px * var(--fs));box-sizing:border-box;font-size:calc(22px * var(--fs));font-weight:800;line-height:1}
.bl-n{padding:0 8px;border-radius:10px;background:var(--card);border:2px solid var(--line);color:var(--ink);white-space:nowrap}
.bl-s{color:var(--ink);min-width:.8em}
.bl-q{min-width:calc(48px * var(--fs));padding:0 6px;border:3px dashed var(--berry);border-radius:10px;background:var(--berry-tint);color:var(--berry);transition:background .3s}
.bl-q.plin{border-style:solid;border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep)}
.pl-bl{text-align:center}
.pl-eq{margin:12px 0 0;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(26px * var(--fs));color:var(--ink)}

/* copertă: un singur ceas (js/aplicatie.js) schimbă cutia, înclinarea și textul în același pas */
.cov-anim{text-align:center;padding:20px 14px!important}
.cov-note{margin:14px 0 0;font-size:calc(18px * var(--fs));color:var(--muted);display:flex;gap:10px;justify-content:center;align-items:center;flex-wrap:wrap}
.cov-note .cv-t{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(22px * var(--fs));color:var(--ink)}
.cv-v{border-radius:999px;padding:2px 12px;background:var(--sun-tint);color:var(--sun-ink)}
.cv-v.bun{background:var(--leaf);color:var(--on-leaf)}
.cv-v.rau{background:var(--berry-tint);color:var(--berry)}
.cov-anim.static .bl-arm{transition:none}

/* stația 2: cuvintele-cheie */
.pl-kw p{margin:10px 0;font-size:calc(20px * var(--fs));line-height:1.4}
.pl-kw mark{border-radius:8px;padding:0 6px}
.kw-p{background:var(--leaf-tint);color:var(--leaf-deep)}
.kw-m{background:var(--berry-tint);color:var(--berry)}
.kw-semn{display:inline-flex;align-items:center;justify-content:center;width:1.4em;height:1.4em;border-radius:50%;font-weight:900;vertical-align:middle}
.kw-semn.p{background:var(--leaf);color:var(--on-leaf)}
.kw-semn.m{background:var(--berry);color:var(--card)}

/* stația 3, 5, 10: egalități cu explicații */
.pl-unde p,.pl-reg p{display:flex;flex-direction:column;align-items:center;gap:2px;margin:0 0 12px;padding:8px 10px;border-radius:12px}
.pl-unde p:nth-child(1),.pl-reg .r1{background:var(--sky-tint)}
.pl-unde p:nth-child(2),.pl-reg .r2{background:var(--sun-tint)}
.pl-unde p:nth-child(3),.pl-reg .r3{background:var(--leaf-tint)}
.pl-unde .eq{font-size:calc(28px * var(--fs))}
.pl-unde small,.pl-reg small,.ds-l small{font-size:calc(14px * var(--fs));font-weight:700;color:var(--muted)}
.pl-reg p{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;column-gap:8px}
.pl-reg .eq{font-size:calc(22px * var(--fs));text-align:center}
.pl-reg .ar{color:var(--muted);font-size:calc(22px * var(--fs))}
.pl-reg small{grid-column:1/-1;text-align:center}
.pl-ech{text-align:center}
.pl-ech p{margin:0}
.pl-ech .eq{display:inline-block;font-size:calc(26px * var(--fs));background:var(--sky-tint);border-radius:10px;padding:2px 14px}
.pl-ech p:last-child .eq{background:var(--leaf);color:var(--on-leaf)}
.pl-ech .ar{color:var(--muted);font-size:calc(18px * var(--fs));line-height:1.3}

/* stația 6: operația inversă desface egalitatea, rând cu rând (același ceas) */
.ds{display:flex;flex-direction:column;gap:6px}
.ds-l{margin:0;display:flex;justify-content:space-between;align-items:center;gap:10px;padding:6px 12px;border-radius:12px;border:2px solid transparent;opacity:.12;transition:opacity .4s,background .4s,border-color .4s}
.ds-l>span{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(25px * var(--fs));white-space:nowrap}
.ds-l small{text-align:right}
.ds-l.on{opacity:1}
.ds-l.acum{background:var(--sun-tint);border-color:var(--sun)}
.ds-x,.ds-y{text-decoration:none;border-radius:8px;padding:0 4px}
.ds-x{background:var(--berry-tint);color:var(--berry)}
.ds-y{background:var(--leaf-tint);color:var(--leaf-deep)}
.ds[data-pas="1"] .ds-x,.ds[data-pas="2"] .ds-x,.ds[data-pas="3"] .ds-x,.ds[data-pas="4"] .ds-x{text-decoration:line-through}
.ds-l.acum .ds-y{animation:pop .45s ease-out}
.ds-l b{color:var(--leaf-deep)}
.ds-proba{background:var(--leaf-tint)}
.ds.static .ds-l{transition:none}

/* ---------- laborator: scrie egalitatea ---------- */
.ec-live{min-height:120px}
.sc-txt,.pt-txt{margin:0 0 12px;font-size:calc(19px * var(--fs));line-height:1.45;color:var(--ink)}
.sc-txt mark{background:var(--sun-tint);color:var(--sun-ink);border-radius:6px;padding:0 4px}
.sc-live .bl.gol .bl-st .bl-n,.sc-live .bl.fara-dr .bl-dr .bl-n{background:transparent;border-style:dashed;color:var(--muted)}
.sc-rand{display:flex;align-items:center;justify-content:center;gap:6px;flex-wrap:wrap;min-height:calc(62px * var(--fs));padding:6px 8px;border:3px dashed var(--line);border-radius:14px;background:var(--paper);margin-bottom:12px}
.sc-rand.bun{border-style:solid;border-color:var(--leaf);background:var(--leaf-tint)}
.sc-rand.rau{animation:shake .45s}
.sc-loc{color:var(--muted);font-weight:700;font-size:calc(15px * var(--fs))}
.sc-p{display:inline-flex;align-items:center;justify-content:center;height:calc(44px * var(--fs));min-width:calc(36px * var(--fs));padding:0 8px;box-sizing:border-box;border-radius:10px;background:var(--card);border:2px solid var(--line);font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(22px * var(--fs));font-weight:800;color:var(--ink);animation:pop .3s ease-out;white-space:nowrap}
.sc-p.eg{background:var(--sun-tint);border-color:var(--sun)}
.sc-banca{display:flex;justify-content:center;align-items:center;gap:18px;flex-wrap:wrap}
.sc-grup{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;align-items:center}
.sc-semne{padding-left:18px;border-left:2px dashed var(--line)}
/* plăcuțele: butoane mari, la fel, cu starea „folosit” clară */
.sc .chip.sc-t{display:inline-flex;align-items:center;justify-content:center;min-width:calc(58px * var(--fs));height:calc(54px * var(--fs));padding:0 12px;font-size:calc(22px * 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;white-space:nowrap}
.sc .chip.sc-t:hover{transform:translateY(-2px)}
.sc .chip.sc-sg{min-width:calc(54px * var(--fs));background:var(--sun-tint)}
.sc .chip.sc-t:disabled{opacity:.35;box-shadow:none;transform:none;cursor:default}
.sc-act,.df-act{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-top:12px;padding-top:10px;border-top:2px dashed var(--line)}
.sc-act .verif{margin-left:auto}
.sc-act .btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* ---------- laborator: desface pas cu pas ---------- */
.df-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))}
.df-eq{margin:6px 0 4px;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(30px * var(--fs));font-weight:800;color:var(--ink)}
.df-cer{margin:0 0 8px;text-align:center;font-weight:800;color:var(--sky)}
.df-var{display:flex;flex-direction:column;align-items:stretch;gap:10px}
.df .chip.df-o{display:flex;align-items:center;justify-content:center;gap:4px;min-height:calc(50px * var(--fs));font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(21px * var(--fs));font-weight:800;color:var(--ink);border:3px solid var(--stripe);border-radius:14px;box-shadow:0 4px 0 var(--stripe)}
.df .chip.df-o.bad{opacity:.55}
.df-proba{margin:10px 0 0;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(22px * var(--fs));color:var(--leaf-deep);background:var(--leaf-tint);border-radius:12px;padding:8px}
.df-act{justify-content:flex-end}
.df-linii{margin-top:10px;display:flex;flex-direction:column;gap:4px}
.df-linii p{margin:0;padding:4px 10px;border-radius:10px;background:var(--sky-tint);font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(19px * var(--fs));animation:pop .35s ease-out}
.df-linii .df-ok{background:var(--leaf-tint);color:var(--leaf-deep)}

/* ---------- laborator: potrivește enunțul ---------- */
.pt-nr{margin:0 0 6px;font-weight:800;color:var(--sky);font-size:calc(14px * var(--fs));text-transform:uppercase;letter-spacing:.06em}
.pt-var{display:flex;flex-direction:column;gap:12px;margin-top:10px}
.pt .chip.pt-o{display:flex;align-items:center;justify-content:center;gap:4px;min-height:calc(56px * var(--fs));padding:6px 14px;border:3px solid var(--stripe);border-radius:14px;background:var(--card);color:var(--ink);box-shadow:0 5px 0 var(--stripe);font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(23px * var(--fs));font-weight:800;cursor:pointer}
.pt .chip.pt-o:hover:not(:disabled){transform:translateY(-2px)}
.pt .chip.pt-o.good{border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep);box-shadow:0 5px 0 var(--leaf)}
.pt .chip.pt-o.bad{border-color:var(--berry);background:var(--berry-tint);opacity:.6;box-shadow:none}
.pt .chip.pt-o:disabled{cursor:default}

/* ---------- 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.aprinsa{color:var(--berry);animation:pop .4s ease-out}
.an-q{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(30px * var(--fs));font-weight:800;margin:14px 0;color:var(--ink);text-align:center}
.an-var{justify-content:center}
.an-var .chip{font-size:calc(20px * var(--fs));min-width:5em;white-space:nowrap}
.an-msg{min-height:1.5em;margin:10px 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: stare statică completă */
html.a-still .bl-arm,html.a-still .ds-l{transition:none!important}
html.a-still .sc-p,html.a-still .df-linii p,html.a-still .an-scor,html.a-still .ds-y{animation:none!important}
@media (prefers-reduced-motion: reduce){
  .bl-arm,.ds-l{transition:none!important}
  .sc-p,.df-linii p,.an-scor,.an-serie,.ds-y,.sc-rand{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}