/* aplicatie.css — stiluri proprii lecției „Două numere după sumă și diferență” (doar variabile de culoare).
   Toate clasele proprii au prefixul sd- / ds- / pr- / vs- / an-, ca să nu se amestece cu edulogia.css. */

/* ---------- metoda figurativă: segmentele ---------- */
.sd-fig{background:var(--card);color:var(--ink);border-radius:12px;padding:16px 16px 12px;font-weight:800}
.sd-grid{display:grid;grid-template-columns:auto minmax(0,1fr) auto;column-gap:12px;row-gap:14px;align-items:center;transition:row-gap .6s ease}
.sd-grid.sd-sep{row-gap:38px}
.sd-nume{grid-column:1;display:flex;flex-direction:column;align-items:flex-end;justify-content:center;gap:2px;text-align:right;font-size:calc(16px * var(--fs));line-height:1.15;color:var(--ink);max-width:8.5em}
.sd-val{font-family:var(--f-display);font-size:calc(19px * var(--fs));line-height:1.1;white-space:nowrap}
.sd-val.sd-q{color:var(--berry);border:2px dashed var(--berry);border-radius:8px;padding:0 8px}
.sd-val.sd-gasit{color:var(--leaf-deep);background:var(--leaf-tint);border-radius:8px;padding:0 8px}
.sd-pista{grid-column:2;display:flex;align-items:stretch;height:calc(44px * var(--fs));min-width:0}
.sd-seg{position:relative;box-sizing:border-box;height:100%;display:flex;align-items:center;justify-content:center;border:3px solid var(--sky);background:var(--sky-tint);color:var(--ink);font-size:calc(17px * var(--fs));white-space:nowrap;transition:transform .7s ease,opacity .6s ease}
.sd-seg.sd-pr{border-radius:10px 0 0 10px}
.sd-seg.sd-fin{border-radius:0 10px 10px 0}
.sd-seg.sd-pr.sd-fin{border-radius:10px}
.sd-seg.sd-d{border-color:var(--berry);border-left:3px dashed var(--berry);background:repeating-linear-gradient(45deg,var(--berry-tint) 0 8px,var(--card) 8px 13px);color:var(--berry)}
.sd-seg.sd-pr+.sd-d{margin-left:-3px}
.sd-seg.sd-m:not(.sd-fin){border-right:0}
.sd-seg.sd-taiat{border-style:dashed}
.sd-seg.sd-dus{transform:translate(18px,-6px) rotate(5deg);opacity:.4}
.sd-fo{position:absolute;left:-14px;top:-26px;font-style:normal;font-size:calc(22px * var(--fs))}
.sd-acol{grid-column:3;align-self:stretch;display:flex;align-items:center;gap:6px;color:var(--leaf-deep)}
.sd-acol svg{width:16px;height:100%;min-height:70px;fill:none;stroke:var(--leaf-deep);stroke-width:3}
.sd-acol b{font-family:var(--f-display);font-size:calc(22px * var(--fs));line-height:1.15;text-align:center;white-space:nowrap}
.sd-acol u{text-decoration:none;border-bottom:3px solid var(--leaf)}
.sd-cap{margin:12px 0 0;min-height:2.7em;display:flex;align-items:center;justify-content:center;text-align:center;font-size:calc(17px * var(--fs));line-height:1.3;color:var(--ink)}
.sd-cap b.d{color:var(--berry)} .sd-cap b.s{color:var(--leaf-deep)}
.sd-calc{margin:12px 0 0;text-align:center;font-family:var(--f-display);font-size:calc(24px * var(--fs));color:var(--ink)}
.sd-calc b{color:var(--leaf-deep)}
.sd-calc.sd-mica{font-family:inherit;font-size:calc(15px * var(--fs));color:var(--muted)}
/* desenul mic (laboratoare) */
.sd-mic{padding:10px 12px 8px}
.sd-mic .sd-grid{row-gap:10px;column-gap:10px}
.sd-mic .sd-pista{height:calc(34px * var(--fs))}
.sd-mic .sd-nume{font-size:calc(14px * var(--fs))}
.sd-mic .sd-val{font-size:calc(17px * var(--fs))}
.sd-mic .sd-acol b{font-size:calc(18px * var(--fs))}
.sd-mic .sd-seg{font-size:calc(15px * var(--fs))}
.sd-live{min-height:120px}

/* animația: un singur ceas (js/aplicatie.js) pune clasa .on pe pasul curent */
.sd-anim .sd-seg[data-k]{transform:scaleX(0);transform-origin:left center;opacity:0}
.sd-anim .sd-seg[data-k].on{transform:none;opacity:1}
.sd-anim .sd-acol[data-k],.sd-anim .sd-val[data-k]{opacity:0;transition:opacity .45s ease}
.sd-anim .sd-acol[data-k].on,.sd-anim .sd-val[data-k].on{opacity:1}
.sd-anim .sd-fo[data-k]{opacity:0;transition:opacity .3s}
.sd-anim .sd-fo.on{opacity:1}
.sd-anim .sd-t[data-k]:not(.on),.sd-anim .sd-t[data-x]:not(.on){display:none}
.sd-anim .sd-t.on{animation:sd-in .4s ease-out}
.sd-anim.sd-still *,html.a-still .sd-anim *{transition:none!important;animation:none!important}
@keyframes sd-in{from{opacity:0}to{opacity:1}}

/* stația 1: enunțul colorat */
.sd-enunt{background:var(--card);color:var(--ink);border-radius:12px;padding:18px;font-weight:800;font-size:calc(22px * var(--fs));line-height:1.6}
.sd-enunt p{margin:0 0 8px}
.sd-hs{background:var(--leaf-tint);border-bottom:3px solid var(--leaf);border-radius:6px;padding:0 6px;color:var(--leaf-deep)}
.sd-hd{background:var(--berry-tint);border-bottom:3px solid var(--berry);border-radius:6px;padding:0 6px;color:var(--berry)}
.sd-leg{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:14px;font-size:calc(16px * var(--fs))}

/* stația 8: proba */
.sd-proba,.sd-reteta,.sd-gresite{background:var(--card);color:var(--ink);border-radius:12px;padding:16px;font-weight:800}
.sd-pt{margin:0 0 10px;text-align:center;font-size:calc(17px * var(--fs));color:var(--muted)}
.sd-pt2{margin:10px 0 0;color:var(--berry)}
.sd-pr-r{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:8px 0;padding:8px 14px;border-radius:10px;background:var(--leaf-tint);font-size:calc(24px * var(--fs));font-family:var(--f-display)}
.sd-pr-r .ok{font-family:inherit;font-size:calc(16px * var(--fs));color:var(--leaf-deep)}

/* stația 9: rețeta */
.sd-rr{display:flex;align-items:center;gap:12px;margin:8px 0;padding:8px 12px;border-radius:10px;background:var(--sky-tint);font-size:calc(19px * var(--fs))}
.sd-rr b{color:var(--leaf-deep)}
.sd-rn{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:1.8em;height:1.8em;border-radius:50%;background:var(--sun);color:var(--on-sun);font-family:var(--f-display)}

/* stația 11: greșeli tipice */
.sd-gt{margin:0 0 10px;text-align:center;font-size:calc(18px * var(--fs))}
.sd-gr{display:flex;flex-direction:column;gap:2px;margin:8px 0;padding:8px 12px;border-radius:10px;border-left:6px solid;font-size:calc(18px * var(--fs))}
.sd-gr small{font-size:calc(14px * var(--fs));color:var(--muted)}
.sd-gr.bad{border-color:var(--berry);background:var(--berry-tint)}
.sd-gr.ok{border-color:var(--leaf);background:var(--leaf-tint)}
.sd-gr.bad span::before{content:"✗ ";color:var(--berry)}
.sd-gr.ok span::before{content:"✓ ";color:var(--leaf-deep)}

/* ---------- laborator 1: desenează enunțul ---------- */
.ds-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))}
.ds-u{display:inline-flex;align-items:center;gap:6px;color:var(--sky)}
.ds-u .ds-cel{width:18px;height:18px;flex:0 0 18px}
.ds-enunt{margin:4px 0 8px;font-weight:800;font-size:calc(16px * var(--fs));line-height:1.35;color:var(--ink)}
.ds-randuri{display:grid;gap:8px}
/* un rând: numele, −, pista, +, valoarea — toate pe aceeași linie, la aceeași înălțime */
.ds-rand{display:flex;align-items:center;gap:8px}
.ds-nume{flex:0 0 6.6em;text-align:right;font-weight:800;font-size:calc(14px * var(--fs));line-height:1.15;color:var(--ink)}
.ds .btn.ds-b{flex:0 0 auto;width:calc(42px * var(--fs));min-width:0;min-height:calc(40px * var(--fs));padding:0;font-size:calc(24px * var(--fs));line-height:1}
.ds .btn.ds-b:disabled{opacity:.4}
.ds-pista{flex:1;min-width:0;display:flex;gap:3px;height:calc(34px * var(--fs))}
.ds-cel{flex:1;box-sizing:border-box;border:2px dashed var(--line);border-radius:6px;background:var(--card)}
.ds-cel.ds-plin{border:2px solid var(--sky);background:var(--sky-tint)}
.ds-cel.ds-dif{border-color:var(--berry);background:repeating-linear-gradient(45deg,var(--berry-tint) 0 6px,var(--card) 6px 10px)}
.ds-val{flex:0 0 3.2em;text-align:left;font-family:var(--f-display);font-size:calc(20px * var(--fs));color:var(--ink)}
/* telefon: numele stă deasupra, ca pista să rămână lată */
html.flow .ds-rand{flex-wrap:wrap;row-gap:2px}
html.flow .ds-nume{flex-basis:100%;text-align:left}
html.flow .ds-val{flex-basis:2.6em}
html.flow .sd-nume{max-width:6em;font-size:calc(14px * var(--fs))}
.ds-live{margin:8px 0 0;text-align:center;font-weight:800;font-size:calc(17px * var(--fs));color:var(--ink)}
.ds-live .s{color:var(--leaf-deep)} .ds-live .d{color:var(--berry)}
.ds-made,.pr-caiet{min-height:0}
.ds-made{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;margin-top:6px}
.ds-gata{background:var(--leaf-tint);color:var(--leaf-deep);border:2px solid var(--leaf);border-radius:999px;padding:1px 10px;font-weight:800;font-size:calc(14px * var(--fs))}
.ds-act,.vs-act,.pr-act{display:flex;gap:10px;justify-content:flex-end;align-items:center;flex-wrap:wrap;margin-top:8px;padding-top:8px;border-top:2px dashed var(--line)}
.ds-act .verif:disabled{opacity:.45;box-shadow:none}

/* ---------- laborator 2: pașii rezolvării ---------- */
.pr-enunt,.vs-enunt,.an-enunt{margin:0 0 6px;font-weight:800;font-size:calc(16px * var(--fs));line-height:1.35;color:var(--ink)}
.pr-caiet{list-style:none;margin:0 0 6px;padding:0;display:grid;gap:4px}
.pr-caiet li{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap;padding:3px 10px;border-radius:8px;background:var(--leaf-tint);color:var(--ink);font-weight:800;font-size:calc(16px * var(--fs));animation:sd-in .4s ease-out}
.pr-caiet li::before{content:"✓";color:var(--leaf-deep)}
.pr-caiet small{font-size:calc(13px * var(--fs));color:var(--muted)}
.pr-q{margin:6px 0;font-weight:800;font-size:calc(17px * var(--fs));color:var(--sky)}
.pr-ops{display:flex;flex-direction:column;align-items:stretch;gap:8px}
.pr .chip.pr-o{text-align:left;font-size:calc(17px * var(--fs));padding:6px 14px;cursor:pointer}
.pr .chip.pr-o:disabled{opacity:.6}
.pr-rasp{margin:8px 0 0;text-align:center;font-weight:800;font-size:calc(19px * var(--fs));color:var(--ink)}
.pr-rasp b{color:var(--leaf-deep)}

/* ---------- laborator 3: verifică soluția ---------- */
.vs-cine{margin:0 0 4px;font-weight:800;font-size:calc(14px * var(--fs));color:var(--muted)}
.vs-cine span{color:var(--sky)}
.vs-jos{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-top:6px}
.vs-jos .vs-rasp{margin:0}
.vs .btn.vs-pb{min-height:36px;padding:4px 12px}
.vs-linii{display:grid;gap:6px}
.vs-l{display:flex;align-items:center;gap:10px;width:100%;text-align:left;border:3px solid var(--line);background:var(--card);color:var(--ink);border-radius:12px;padding:3px 12px;min-height:calc(36px * var(--fs));font:inherit;font-weight:800;font-size:calc(16px * var(--fs));cursor:pointer}
.vs-l:hover{border-color:var(--sky)}
.vs-n{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:1.6em;height:1.6em;border-radius:50%;background:var(--sky-tint);color:var(--sky);font-size:calc(14px * var(--fs))}
.vs-l.ales{border-color:var(--berry);background:var(--berry-tint)}
.vs-l.ales .vs-n{background:var(--berry);color:var(--card)}
.vs-l.gresit .vs-t{text-decoration:line-through;text-decoration-color:var(--berry);text-decoration-thickness:2px}
.vs-l:disabled{cursor:default}
.vs-rasp{margin:6px 0 0;font-weight:800;font-size:calc(16px * var(--fs));color:var(--ink)}
.vs-proba{display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:4px;font-weight:800;font-size:calc(15px * var(--fs))}
.vs-proba:empty{display:none}
.vs-proba .ok{color:var(--leaf-deep)} .vs-proba .bad{color:var(--berry)}
.vs-fix{flex:1 1 14em;font-weight:800;font-size:calc(15px * var(--fs));line-height:1.3;color:var(--leaf-deep)}
.vs .chip.vs-ok{min-height:42px;padding:6px 14px;cursor:pointer}
.vs .chip.vs-ok.ales{background:var(--leaf);border-color:var(--leaf-deep);color:var(--on-leaf);transform:translateY(-2px)}
.vs-act .verif,.vs-act .vs-urm{margin-left:auto}

/* ---------- laborator 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.aprinsa{color:var(--berry);animation:sd-pop .4s ease-out}
.an-enunt{margin-top:10px}
.an-q{font-size:calc(19px * var(--fs));font-weight:800;margin:6px 0 10px;color:var(--sky);text-align:center}
.an-var{justify-content:center}
.an-var .chip{font-size:calc(20px * var(--fs));min-width:4.5em;cursor:pointer}
.an-msg{min-height:1.5em;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-final .an-q{color:var(--ink)}
.an-final .grp{justify-content:center}
.an-scor{font-family:var(--f-display);font-size:calc(54px * var(--fs));color:var(--leaf-deep);animation:sd-pop .5s}
@keyframes sd-pop{0%{transform:scale(.6)}70%{transform:scale(1.15)}100%{transform:none}}

/* mișcare redusă (sistem): animațiile decorative se opresc; desenele se opresc din js/aplicatie.js */
@media (prefers-reduced-motion: reduce){
  .pr-caiet li,.an-scor,.an-serie,.sd-t{animation:none!important}
  .sd-seg,.sd-grid{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}