/* aplicatie.css — stiluri proprii lecției „Probleme cu cele patru operații” (doar variabile de culoare).
   Prefixe: pu- (cele patru uși), pi-, pt-, ps-, pb-, pp2-, pd-, pr- (planșe), ua- (Ușa potrivită),
   cz- (Construiește exercițiul), an- (Antrenament rapid). */

/* laboratoarele fără planșă ocupă toată lățimea stației */
.lesson:has(> .work:empty){grid-template-columns:minmax(0,1fr)}
.lesson > .work:empty{display:none}

/* culoarea fiecărei operații */
.u-ad{--op:var(--leaf);--op-t:var(--leaf-tint);--op-i:var(--leaf-deep)}
.u-sc{--op:var(--berry);--op-t:var(--berry-tint);--op-i:var(--berry)}
.u-in{--op:var(--sky);--op-t:var(--sky-tint);--op-i:var(--sky)}
.u-im{--op:var(--sun-edge);--op-t:var(--sun-tint);--op-i:var(--sun-ink)}

/* ---------- planșa: cele patru uși ---------- */
.plate .pu-usi{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;background:var(--card);color:var(--ink);border-radius:12px;padding:12px}
.pu-usa{position:relative;display:flex;flex-direction:column;align-items:center;gap:2px;border:3px solid var(--op);background:var(--op-t);border-radius:40px 40px 10px 10px;padding:8px 8px 6px;transition:transform .35s,box-shadow .35s}
.pu-usa::after{content:"";position:absolute;right:10px;top:52%;width:9px;height:9px;border-radius:50%;background:var(--op)}
.pu-cap{display:flex;align-items:center;gap:8px}
.pu-semn{display:inline-flex;align-items:center;justify-content:center;width:1.4em;height:1.4em;border-radius:50%;background:var(--op);color:var(--card);font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(24px * var(--fs));line-height:1}
.pu-nume{font-weight:900;font-size:calc(16px * var(--fs));color:var(--op-i)}
.pu-sc{position:relative;width:100%;height:calc(46px * var(--fs));display:grid;place-items:center}
.pu-sc > .pu-i,.pu-sc > .pu-d{grid-area:1/1;display:flex;align-items:center;justify-content:center;gap:3px;font-size:calc(19px * var(--fs));line-height:1;white-space:nowrap;transition:opacity .5s,transform .5s}
.pu-sag{display:none}
.pu-d{opacity:0;transform:scale(.85)}
.pu-usi.dupa .pu-i{opacity:0;transform:scale(.85)}
.pu-usi.dupa .pu-d{opacity:1;transform:none}
.pu-gol{display:inline-block;width:14px}
.pu-plec{opacity:.28;filter:grayscale(1);transform:translateY(-6px);display:inline-block}
.pu-cut{display:inline-flex;gap:1px;border:2px dashed var(--op);border-radius:8px;padding:2px 3px;margin:0 2px}
.pu-eg{margin:0;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(20px * var(--fs));line-height:1.1}
.pu-cuv{margin:0;font-weight:800;font-size:calc(13px * var(--fs));color:var(--muted);text-align:center;line-height:1.15}
.pu-nota{grid-column:1/-1;margin:2px 0 0;text-align:center;font-size:calc(17px * var(--fs));min-height:1.5em}
.pu-nota b b{color:var(--leaf-deep)}
.pu-usi.cov .pu-usa.on{transform:scale(1.04);box-shadow:0 0 0 4px var(--op)}
/* stare statică (fără animații): ambele scene, una sub alta */
.pu-usi.static .pu-sc{height:auto;display:flex;flex-direction:column;align-items:center;gap:2px}
.pu-usi.static .pu-i,.pu-usi.static .pu-d{opacity:1;transform:none}
.pu-usi.static .pu-sag{display:block;font-weight:900;color:var(--muted);line-height:1}
.pu-usi.cov.static .pu-sc{gap:0}

/* ---------- planșa: cuvintele-indiciu ---------- */
.plate .pi-tab{display:grid;gap:8px;background:var(--card);color:var(--ink);border-radius:12px;padding:12px}
.pi-r{display:flex;align-items:center;gap:12px;border-radius:12px;background:var(--op-t);border-left:6px solid var(--op);padding:8px 12px}
.pi-r b{flex:0 0 auto;width:1.5em;height:1.5em;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:var(--op);color:var(--card);font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(26px * var(--fs));line-height:1}
.pi-r span{font-weight:800;font-size:calc(17px * var(--fs));line-height:1.3}

/* ---------- planșa: același tablou, trei întrebări ---------- */
.plate .pt{display:flex;align-items:center;gap:14px;background:var(--card);color:var(--ink);border-radius:12px;padding:12px}
.pt-svg{flex:0 0 46%;width:46%;height:auto}
.pt-p{fill:var(--sky-tint);stroke:var(--sky);stroke-width:3;transition:fill .4s}
.pt.c0 .pt-p,.pt.c1 .pt-p.r0,.pt.c2 .pt-p.k0{fill:var(--sun)}
.pt-l{display:grid;gap:8px;flex:1;min-width:0}
.pt-c{margin:0;display:flex;flex-direction:column;border:2px solid var(--line);border-radius:10px;padding:4px 10px;transition:background .4s,border-color .4s}
.pt-c b{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(22px * var(--fs));line-height:1.1}
.pt-c span{font-size:calc(14px * var(--fs));color:var(--muted);font-weight:700}
.pt-c.on{background:var(--sun-tint);border-color:var(--sun-edge)}

/* ---------- planșa: schema problemei ---------- */
.plate .ps{background:var(--card);color:var(--ink);border-radius:12px;padding:12px;display:grid;gap:10px}
.ps-pb{margin:0;font-weight:800;font-size:calc(16px * var(--fs));line-height:1.3;background:var(--paper);border-radius:10px;padding:8px 10px}
.ps-flux{display:flex;align-items:stretch;gap:6px}
.ps-c{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px;border:3px solid var(--line);border-radius:12px;padding:6px 8px;font-size:calc(14px * var(--fs));font-weight:700;line-height:1.25}
.ps-c small{font-weight:900;font-size:calc(12px * var(--fs));text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.ps-c b{margin-top:auto;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(19px * var(--fs))}
.ps-st{border-style:dashed}
.ps-p1{border-color:var(--sky);background:var(--sky-tint)}
.ps-p2{border-color:var(--berry);background:var(--berry-tint)}
.ps-sag{align-self:center;font-weight:900;font-size:calc(22px * var(--fs));color:var(--muted)}

/* ---------- planșa: modelul-bandă ---------- */
.plate .pb{background:var(--card);color:var(--ink);border-radius:12px;padding:10px 12px}
.pb-svg{display:block;width:100%;height:auto}
.pb-svg text{fill:var(--ink);font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:22px;text-anchor:middle}
.pb-svg .pb-et{font-size:17px;fill:var(--muted)}
.pb-s{fill:var(--sky-tint);stroke:var(--sky);stroke-width:3}
.pb-r{fill:var(--leaf-tint);stroke:var(--leaf);stroke-width:3}
.pb-ac{fill:none;stroke:var(--muted);stroke-width:2.5}
.pb-eg{margin:4px 0 0;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(24px * var(--fs))}
.pb-eg b{color:var(--leaf-deep)}

/* ---------- planșa: paranteze ---------- */
.plate .pp2{background:var(--card);color:var(--ink);border-radius:12px;padding:12px;display:grid;gap:10px}
.pp2-pb{margin:0;font-weight:800;font-size:calc(15px * var(--fs));color:var(--muted);text-align:center}
.pp2-r{display:flex;align-items:center;gap:10px;border:3px solid var(--line);border-radius:12px;padding:8px 12px;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(23px * var(--fs))}
.pp2-ex{flex:0 0 auto}
.pp2-ex i{font-style:normal;color:var(--berry);font-size:1.15em}
.pp2-s{margin-left:auto;font-size:calc(26px * var(--fs))}
.pp2-r.bun{border-color:var(--leaf)} .pp2-r.bun .pp2-s{color:var(--leaf-deep)}
.pp2-r.rau{border-color:var(--berry)} .pp2-r.rau .pp2-s{color:var(--berry)}
.pp2-sc{display:flex;justify-content:center;gap:8px;flex-wrap:wrap}
.pp2-sc span{border:2px solid var(--line);border-radius:999px;padding:2px 12px;font-weight:900;font-size:calc(15px * var(--fs));background:var(--paper)}

/* ---------- planșa: două drumuri ---------- */
.plate .pd{background:var(--card);color:var(--ink);border-radius:12px;padding:12px;display:flex;align-items:center;gap:16px}
.pd-g{display:grid;gap:2px}
.pd-r{font-size:calc(22px * var(--fs));letter-spacing:2px;line-height:1.05}
.pd .a{color:var(--sky)} .pd .b{color:var(--berry)}
.pd-l{display:grid;gap:8px;flex:1}
.pd-l p{margin:0;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(22px * var(--fs));border:2px solid var(--line);border-radius:10px;padding:4px 10px;text-align:center}

/* ---------- planșa: proba ---------- */
.plate .pr{background:var(--card);color:var(--ink);border-radius:12px;padding:14px;display:grid;gap:10px;justify-items:center}
.pr-r{display:flex;align-items:center;gap:16px}
.pr-o{width:1.6em;height:1.6em;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:var(--op);color:var(--card);font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(32px * var(--fs));line-height:1}
.pr-s{font-size:calc(34px * var(--fs));font-weight:900;color:var(--muted)}
.pr-ex{margin:4px 0 0;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(22px * var(--fs));text-align:center}
.pr-ex span{color:var(--muted);font-size:.8em}

/* ---------- laborator 1: ușa potrivită ---------- */
.ua{display:grid;gap:10px}
.ua-top,.cz-top{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;font-weight:800;color:var(--muted);font-size:calc(14px * var(--fs))}
.ua-puncte{display:flex;gap:6px}
.ua-puncte i{width:14px;height:14px;border-radius:50%;border:2px solid var(--line);background:var(--card)}
.ua-puncte i.acum{border-color:var(--sky);background:var(--sky-tint)}
.ua-puncte i.gata{border-color:var(--leaf);background:var(--leaf)}
.ua-t,.cz-t{margin:0;font-weight:800;font-size:calc(19px * var(--fs));line-height:1.35;color:var(--ink);background:var(--paper);border-radius:12px;padding:10px 14px;border-left:6px solid var(--sky)}
.ua-usi{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.ua .ua-u{position:relative;display:flex;align-items:center;justify-content:center;gap:10px;min-height:calc(76px * var(--fs));padding:8px 22px 8px 10px;border:3px solid var(--op);background:var(--card);color:var(--ink);border-radius:30px 30px 10px 10px;box-shadow:0 5px 0 var(--op);cursor:pointer;transition:transform .2s,background .3s}
.ua .ua-u::after{content:"";position:absolute;right:10px;top:50%;width:9px;height:9px;margin-top:-4px;border-radius:50%;background:var(--op)}
.ua .ua-u:hover:not(:disabled){transform:translateY(-3px);background:var(--op-t)}
.ua .ua-u:disabled{opacity:.45;cursor:default}
.ua-s{flex:0 0 auto;width:1.45em;height:1.45em;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:var(--op);color:var(--card);font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(30px * var(--fs));line-height:1}
.ua-n{display:flex;flex-direction:column;align-items:flex-start;min-width:0;font-weight:900;font-size:calc(17px * var(--fs));line-height:1.15;text-align:left;color:var(--op-i)}
.ua-n small{font-weight:700;font-size:calc(13px * var(--fs));color:var(--muted)}
.ua .ua-u.deschisa{opacity:1;background:var(--op-t);box-shadow:inset 0 0 0 3px var(--op),0 5px 0 var(--op);transform:translateY(-3px)}
.ua .ua-u.deschisa::after{background:var(--card);box-shadow:0 0 0 3px var(--op)}
.ua .ua-u.rau{animation:po-shake .45s}
.ua-jos{display:flex;align-items:stretch;gap:14px}
.ua-scena{flex:1;min-width:0;min-height:calc(112px * var(--fs));display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;border:3px dashed var(--line);border-radius:14px;padding:8px;background:var(--card)}
.ua-ghid{color:var(--muted);font-weight:800;font-size:calc(16px * var(--fs))}
.ua-cut{display:flex;flex-wrap:wrap;justify-content:center;gap:2px;max-width:100%;border:2px solid var(--line);border-radius:12px;padding:4px 6px;background:var(--paper)}
.ua-o{display:inline-block;font-size:calc(24px * var(--fs));line-height:1.15}
.ua-vine{animation:po-vine .55s ease-out both}
.ua-plec{opacity:.25;filter:grayscale(1);transform:translateY(-8px);animation:po-pleaca .6s ease-in both}
.ua-apare{animation:po-apare .45s ease-out both}
.ua-da{animation:po-da .4s ease-out both}
.ua-dr{flex:0 0 calc(250px * var(--fs));max-width:40%;display:flex;flex-direction:column;justify-content:center;gap:10px}
.ua-eg{margin:0;display:flex;flex-direction:column;align-items:center;text-align:center;min-height:1.4em}
.ua-eg b{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(32px * var(--fs));line-height:1.1;color:var(--leaf-deep);animation:po-pop .45s ease-out}
.ua-eg small{font-weight:800;color:var(--muted);font-size:calc(14px * var(--fs))}
.ua-act{display:flex;justify-content:center}
.ua-act:empty{display:none}

/* ---------- laborator 2: construiește exercițiul ---------- */
.cz{display:grid;gap:10px}
.cz-ajutor{font-weight:700}
.cz-linie{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:4px;min-height:calc(66px * var(--fs));border:3px dashed var(--sky);border-radius:14px;background:var(--card);padding:6px 12px}
.cz-linie.bun{border-style:solid;border-color:var(--leaf);background:var(--leaf-tint)}
.cz-ghid{color:var(--muted);font-weight:800;font-size:calc(16px * var(--fs))}
.cz-tk{display:inline-flex;align-items:center;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(32px * var(--fs));line-height:1.1;color:var(--ink);animation:po-pop .3s ease-out}
.cz-tk.o{color:var(--sky);padding:0 2px}
.cz-tk.p{color:var(--berry);font-size:calc(38px * var(--fs))}
.cz-tk.r{color:var(--leaf-deep);margin-left:8px}
.cz-pal{display:flex;justify-content:center;align-items:center;gap:22px;flex-wrap:wrap}
.cz-gr{display:flex;align-items:center;gap:8px}
.cz .cz-p{min-width:calc(58px * var(--fs));height:calc(56px * var(--fs));padding:0 12px;border:3px solid var(--line);background:var(--card);color:var(--ink);border-radius:14px;box-shadow:0 4px 0 var(--stripe);font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(28px * var(--fs));line-height:1;cursor:pointer}
.cz .cz-p:hover:not(:disabled){transform:translateY(-2px);border-color:var(--sky)}
.cz .cz-p:active:not(:disabled){transform:translateY(2px);box-shadow:0 2px 0 var(--stripe)}
.cz .cz-n{border-color:var(--sun-edge);background:var(--sun-tint)}
.cz .cz-o{color:var(--sky);border-color:var(--sky)}
.cz .cz-par{color:var(--berry);border-color:var(--berry)}
.cz .cz-p:disabled{opacity:.45;cursor:default;box-shadow:none}
.cz-act{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-top:8px;border-top:2px dashed var(--line)}
.cz-loc{flex:1;display:flex;justify-content:center;min-width:0}
.cz-pasi{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 14px;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(19px * var(--fs));color:var(--leaf-deep)}
.cz-act .btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* ---------- 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.aprinsa{color:var(--berry);animation:po-pop .4s ease-out}
.an-tip{margin:10px 0 0;text-align:center;font-weight:800;color:var(--sky);font-size:calc(14px * var(--fs));text-transform:uppercase;letter-spacing:.06em}
.an-q{font-size:calc(22px * var(--fs));font-weight:800;margin:6px 0 14px;color:var(--ink);text-align:center;line-height:1.35}
.an-var{justify-content:center;gap:12px}
.an-var .chip{font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(22px * var(--fs));min-width:6em;min-height:calc(52px * var(--fs));border:3px solid var(--stripe);border-radius:14px;box-shadow:0 4px 0 var(--stripe)}
.an-msg{min-height:2.8em;margin:12px 0 0;text-align:center;font-weight:800;color:var(--ink)}
.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:po-pop .5s}

@keyframes po-pop{0%{transform:scale(.6)}70%{transform:scale(1.15)}100%{transform:none}}
@keyframes po-shake{0%,100%{transform:none}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}
@keyframes po-vine{from{opacity:0;transform:translateX(70px)}}
@keyframes po-pleaca{from{opacity:1;filter:none;transform:none}}
@keyframes po-apare{from{opacity:0;transform:scale(.6)}}
@keyframes po-da{from{opacity:0;transform:translateY(-28px)}}

/* telefon: laboratoarele se așază pe o coloană */
html.flow .ua-usi{grid-template-columns:repeat(2,minmax(0,1fr))}
html.flow .ua-jos{flex-direction:column}
html.flow .ua-dr{flex:auto;max-width:none}
html.flow .ps-flux{flex-direction:column}
html.flow .ps-sag{transform:rotate(90deg)}
html.flow .cz-tk{font-size:calc(26px * var(--fs))}
html.flow .cz-pal{gap:12px}
html.flow .plate .pu-usi{gap:8px;padding:8px}
html.flow .pu-usa{padding:6px 4px;border-radius:28px 28px 10px 10px}
html.flow .pu-usa::after{right:6px}
html.flow .pu-sc > .pu-i,html.flow .pu-sc > .pu-d{font-size:calc(14px * var(--fs));gap:1px}
html.flow .pu-cut{margin:0 1px;padding:1px 2px}
html.flow .pu-nume{font-size:calc(14px * var(--fs))}
html.flow .plate .pt{flex-direction:column}

/* mișcare redusă (sistem) și „fără animații”: animațiile se opresc pe starea finală; planșele cu ceas sunt oprite din js/aplicatie.js */
@media (prefers-reduced-motion: reduce){
  .ua-vine,.ua-plec,.ua-apare,.ua-da,.ua-eg b,.ua-u,.cz-tk,.an-scor,.an-serie,.pu-usa,.pu-i,.pu-d,.pt-p,.pt-c{animation:none!important;transition:none!important}
}
html.a-still :is(.ua-vine,.ua-plec,.ua-apare,.ua-da,.ua-eg b,.ua-u,.cz-tk,.an-scor,.an-serie,.pu-usa,.pu-i,.pu-d,.pt-p,.pt-c){animation:none!important;transition: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}