/* aplicatie.css — stiluri proprii lecției „Probleme cu adunarea numerelor mari” (doar variabile de culoare).
   Prefixe proprii: pa- (desene comune), ps- (laboratorul schemei), pc- (laboratorul coloanei), an- (antrenament). */

/* ---------- carduri și note ---------- */
.pa-card{background:var(--card);color:var(--ink);border-radius:12px;padding:14px 16px;text-align:center}
.plate .pa-card{font-weight:800}
.pa-nota{margin:10px 0 0;font-size:calc(15px * var(--fs));font-weight:800;color:var(--muted);line-height:1.3}
.pa-nota b{color:var(--ink)}

/* ---------- calculul în coloană (școala românească) ----------
   o coloană pe ordin + o coloană pentru semn, la DREAPTA primului număr; linia sub al doilea număr */
.pa-col{--w:1.05em;display:inline-grid;grid-template-columns:repeat(var(--n),var(--w)) var(--w);
  font-family:var(--f-display);font-weight:800;font-size:calc(40px * var(--fs));line-height:1.12;font-variant-numeric:tabular-nums;color:var(--ink);vertical-align:middle}
.pa-col>span{display:flex;align-items:center;justify-content:center;box-sizing:border-box;min-width:0}
.pa-col.pa-mic{font-size:calc(26px * var(--fs))}
.pa-col .pa-mii{padding-right:.16em}                          /* spațiu între clasa miilor și clasa unităților */
.pa-h{font-size:.38em;font-weight:900;padding:2px 0;border-radius:6px 6px 0 0}
.pa-h.pa-cu{color:var(--sky);background:var(--sky-tint)}
.pa-h.pa-cm{color:var(--leaf-deep);background:var(--leaf-tint)}
.pa-col .pa-h:empty{background:none}
.pa-tr{font-size:.5em;color:var(--berry);height:1.3em;align-items:flex-end!important}
.pa-semn{color:var(--berry)}
.pa-r{border-top:4px solid var(--ink);min-height:1.12em}
.pa-r.pa-gol::after{content:"";width:.6em;height:.86em;border:2px dashed var(--muted);border-radius:6px;opacity:.7}
.pa-col .pa-act{background:var(--sun-tint)}
.pa-col .pa-h.pa-act{background:var(--sun);color:var(--on-sun)}
.pa-prop{color:var(--sky)!important}
.pa-t1{color:var(--berry)}

/* ---------- copertă și stația 6: coloana animată ---------- */
.pa-colanim .pa-colbox{min-height:calc(40px * 5 * 1.12 * var(--fs))}
.pa-cov .pa-col{font-size:calc(46px * var(--fs))}
.pa-cov .pa-colbox{min-height:calc(46px * 5 * 1.12 * var(--fs))}
.pa-cov-pb{margin:0 0 8px;font-size:calc(15px * var(--fs));font-weight:800;color:var(--muted);line-height:1.35}
.pa-cov-pb b{color:var(--ink)}
.pa-anim-txt{margin:10px 0 0;min-height:2.6em;display:block;text-align:center;font-size:calc(17px * var(--fs));font-weight:800;color:var(--muted);line-height:1.3}
.pa-anim-txt b{color:var(--ink)}
.pa-anim-txt b.pa-t1{color:var(--berry)}

/* ---------- schema cu segmente ---------- */
.pa-sch{display:grid;gap:0;margin:6px 0 2px}
.pa-acol-et{font-weight:900;font-size:calc(19px * var(--fs));color:var(--berry);text-align:center}
.pa-acol-et small{font-size:.72em;color:var(--muted)}
.pa-acol{height:14px;border:3px solid var(--berry);border-bottom:0;border-radius:10px 10px 0 0;margin:2px 4px 4px}
.pa-acol.pa-jos{border-bottom:3px solid var(--berry);border-top:0;border-radius:0 0 10px 10px;margin:4px 4px 2px}
.pa-bar{display:flex;align-items:stretch;min-height:calc(44px * var(--fs))}
.pa-seg{display:flex;align-items:center;justify-content:center;min-width:0;padding:4px 6px;border:3px solid var(--ink);font-weight:900;font-size:calc(17px * var(--fs));color:var(--ink);white-space:nowrap;transition:opacity .35s,background .35s}
.pa-seg+.pa-seg{border-left-width:0}
.pa-seg:first-child{border-radius:10px 0 0 10px}
.pa-seg:last-child{border-radius:0 10px 10px 0}
.pa-seg:only-child{border-radius:10px}
.pa-s1{background:var(--sky-tint)}
.pa-s2{background:var(--sun-tint)}
.pa-copie{border-style:dashed;color:var(--muted)}
.pa-nume{display:flex;margin-top:4px;font-size:calc(14px * var(--fs));font-weight:800;color:var(--muted)}
.pa-nume span{min-width:0;text-align:center}
.pa-story{margin:0 0 10px;font-size:calc(16px * var(--fs));line-height:1.6;text-align:left}
.pa-story mark{border-radius:6px;padding:0 4px;color:var(--ink)}
.pa-m1{background:var(--sky-tint)} .pa-m2{background:var(--sun-tint)} .pa-mq{background:var(--berry-tint)}

/* stația 3: schema se construiește pas cu pas (data-k din ceas); fără animații: data-k=3, totul vizibil */
.pa-schanim .pa-s2,.pa-schanim .pa-acol,.pa-schanim .pa-acol-et,.pa-schanim .pa-nume span:nth-child(2){transition:opacity .35s}
.pa-schanim[data-k="0"] .pa-s2,.pa-schanim[data-k="0"] .pa-nume span:nth-child(2){opacity:.15}
.pa-schanim[data-k="0"] .pa-acol,.pa-schanim[data-k="0"] .pa-acol-et,.pa-schanim[data-k="1"] .pa-acol,.pa-schanim[data-k="1"] .pa-acol-et{opacity:.12}
.pa-schanim[data-k="0"] .pa-s1,.pa-schanim[data-k="1"] .pa-s2{background:var(--sun)}
.pa-schanim .pa-v{display:none}
.pa-schanim[data-k="3"] .pa-q{display:none}
.pa-schanim[data-k="3"] .pa-v{display:inline}
.pa-schanim .pa-anim-txt span{display:none}
.pa-schanim[data-k="0"] .pa-anim-txt [data-k="0"],.pa-schanim[data-k="1"] .pa-anim-txt [data-k="1"],
.pa-schanim[data-k="2"] .pa-anim-txt [data-k="2"],.pa-schanim[data-k="3"] .pa-anim-txt [data-k="3"]{display:inline}

/* schema de comparare: numele în stânga, benzile pe aceeași scară */
.pa-cmp{display:grid;grid-template-columns:auto minmax(0,1fr);gap:8px 10px;align-items:start;text-align:left}
.pa-cmp-n{font-weight:900;font-size:calc(15px * var(--fs));color:var(--muted);min-height:calc(44px * var(--fs));display:flex;align-items:center}
.pa-cmp-b{min-width:0}
.pa-cmp .pa-acol-et{font-size:calc(16px * var(--fs))}

/* stația 2: cuvintele-cheie */
.pa-cuv{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.pa-cuv-c{display:grid;gap:6px;align-content:start}
.pa-cuv-c b{font-size:calc(20px * var(--fs));border-radius:10px;padding:4px}
.pa-cuv-c span{border-radius:10px;padding:5px 8px;font-size:calc(16px * var(--fs));border:2px solid var(--line)}
.pa-plus b{background:var(--leaf);color:var(--on-leaf)} .pa-plus span{background:var(--leaf-tint)}
.pa-minus b{background:var(--berry);color:var(--card)} .pa-minus span{background:var(--berry-tint)}

/* stația 8: tabelul de ordine, colorat pe clase */
.pa-tab{display:inline-grid;grid-template-columns:repeat(6,calc(44px * var(--fs))) calc(30px * var(--fs));gap:3px;align-items:center;justify-items:center}
.pa-tab-cls{grid-column:span 3;width:100%;font-size:calc(12px * var(--fs));font-weight:900;border-radius:8px 8px 0 0;padding:2px 0}
.pa-tab-h{width:100%;font-size:calc(15px * var(--fs));font-weight:900;border-radius:6px;padding:3px 0}
.pa-tcm{background:var(--leaf-tint);color:var(--leaf-deep)}
.pa-tcu{background:var(--sky-tint);color:var(--sky)}
.pa-tab-d{width:100%;text-align:center;font-family:var(--f-display);font-size:calc(34px * var(--fs));line-height:1.15;border-bottom:1px dashed var(--line)}
.pa-tab-r{border-top:4px solid var(--ink);border-bottom:0;color:var(--leaf-deep)}
.pa-tab .pa-semn{font-family:var(--f-display);font-size:calc(34px * var(--fs))}

/* stația 9: axa numerică */
.pa-axa{width:100%;height:auto;display:block;font-family:var(--f-body)}
.pa-ax-l{stroke:var(--ink);stroke-width:3}
.pa-ax-t{stroke:var(--ink);stroke-width:2}
.pa-ax-n{fill:var(--muted);font-size:12px;font-weight:800;text-anchor:middle}
.pa-ax-z{fill:var(--sun);opacity:.85}
.pa-ax-e{fill:var(--ink);font-size:15px;font-weight:900;text-anchor:middle}
.pa-ax-ok{fill:var(--leaf);stroke:var(--card);stroke-width:2}
.pa-ax-rau{fill:var(--berry);stroke:var(--card);stroke-width:2}
.pa-ax-x{fill:var(--berry);font-size:13px;font-weight:900;text-anchor:end}
.pa-ax-v{fill:var(--leaf-deep);font-size:13px;font-weight:900;text-anchor:start}

/* stația 10: proba */
.pa-proba{display:flex;align-items:center;justify-content:center;gap:14px;flex-wrap:wrap}
.pa-sag{font-size:calc(28px * var(--fs));color:var(--muted);font-weight:900}

/* ---------- laboratoarele: lățimea întreagă a scenei ---------- */
html:not(.flow) .view:has(.ps,.pc) .lesson{grid-template-columns:minmax(0,1fr)}
.view:has(.ps,.pc) .work{display:none}
html:not(.flow) .view:has(.an) .lesson{grid-template-columns:minmax(0,1.45fr) minmax(0,.55fr)}
.ps,.pc,.an{display:grid;gap:8px}

/* ---------- laborator 1: construiește schema ---------- */
.ps-top,.an-top{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;font-weight:800;color:var(--muted);font-size:calc(14px * var(--fs))}
.ps-ajutor{color:var(--sky);font-weight:800;font-size:calc(14px * var(--fs))}
.ps-nr{display:inline-block;background:var(--sun);color:var(--on-sun);border-radius:8px;padding:0 8px;margin-right:4px}
.ps-pb,.pc-pb{margin:0;font-weight:800;font-size:calc(17px * var(--fs));line-height:1.35;color:var(--ink);background:var(--sun-tint);border-radius:12px;padding:8px 12px}
.ps-sch{margin:2px 0}
.ps-tot{display:flex;align-items:center;justify-content:center;gap:8px}
.ps-tot small{font-weight:800;color:var(--muted);font-size:calc(14px * var(--fs))}
.ps-sch .pa-seg{min-height:calc(48px * var(--fs));padding:3px}
.ps-sch .pa-bar{min-height:calc(48px * var(--fs))}
.ps-sch.pa-cmp .pa-cmp-n{min-height:calc(48px * var(--fs))}
/* locurile de pe schemă: casete de aceeași înălțime, centrate în segment */
.ps-slot{display:inline-flex;align-items:center;justify-content:center;min-width:6.4em;height:calc(40px * var(--fs));padding:0 10px;border:3px dashed var(--muted);border-radius:10px;background:var(--card);color:var(--muted);font:inherit;font-weight:900;font-size:calc(18px * var(--fs));cursor:pointer;box-sizing:border-box}
.ps-slot:hover{border-color:var(--sky)}
.ps-slot.plin{border-style:solid;border-color:var(--sky);color:var(--ink)}
.ps-slot.necunoscut{border-color:var(--berry);color:var(--berry)}
.ps-slot.ps-rez{border:3px solid var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep);cursor:default;animation:pa-pop .4s ease-out}
.ps-rand{display:flex;align-items:center;justify-content:space-between;gap:10px 24px;flex-wrap:wrap}
.ps-grup{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.ps-et,.pc-et{font-weight:900;color:var(--muted);font-size:calc(14px * var(--fs));text-transform:uppercase;letter-spacing:.04em}
.ps-carti,.ps-ops{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.ps .chip.ps-c,.ps .chip.ps-op,.pc .chip.pc-d,.pc .chip.pc-c{display:inline-flex;align-items:center;justify-content:center;min-height:calc(46px * var(--fs));padding:0 14px;font-family:var(--f-display);font-size:calc(20px * var(--fs));font-weight:800;color:var(--ink);border:3px solid var(--stripe);border-radius:12px;box-shadow:0 4px 0 var(--stripe);cursor:pointer}
.ps .chip.ps-c{min-width:6.2em}
.ps .chip.ps-op{min-width:2.6em;font-size:calc(26px * var(--fs))}
.ps .chip.ps-c.necunoscut{color:var(--berry)}
.ps .chip.ps-c:disabled{opacity:.3;box-shadow:none}
.ps .chip.ales,.pc .chip.ales{background:var(--sky);border-color:var(--sky);color:var(--card);box-shadow:0 4px 0 var(--ink);transform:translateY(-2px)}
.ps-calc{font-weight:900;font-size:calc(19px * var(--fs));color:var(--ink)}
.ps-calc b{color:var(--leaf-deep)}
.ps-act,.pc-act{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;padding-top:8px;border-top:2px dashed var(--line)}
.ps-act .verif,.ps-act .ps-next,.pc-act .verif{margin-left:auto}
.ps-act .verif:disabled,.pc-act .verif:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* ---------- laborator 2: adunarea în coloană cu transport ---------- */
.pc-main{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:center}
html.flow .pc-main{grid-template-columns:minmax(0,1fr)}
.pc-col{border:2px solid var(--line);padding:6px 12px}
.pc-col .pa-col{font-size:calc(38px * var(--fs))}
.pc-dr{display:grid;gap:8px}
.pc-pas{margin:0;font-weight:800;color:var(--muted);font-size:calc(14px * var(--fs))}
.pc-ex{margin:0;font-weight:900;font-size:calc(22px * var(--fs));min-height:1.4em;color:var(--ink);line-height:1.3}
.pc-ex b{color:var(--leaf-deep)}
.pc-t{color:var(--berry)}
.pc-est{font-size:calc(15px * var(--fs));color:var(--muted)}
.pc-rand{display:flex;align-items:center;gap:10px}
.pc-et{min-width:3.4em}
.pc-rand[hidden]{display:none}
.pc-pad{flex:1;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}
.pc-tr{display:flex;gap:8px}
.pc .chip.pc-d{padding:0}
.pc .chip.pc-c{min-width:3.2em}
.pc .chip:disabled{opacity:.45;transform:none}

/* ---------- laborator 3: antrenament rapid ---------- */
.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:pa-pop .4s ease-out}
.an-q{font-size:calc(20px * var(--fs));font-weight:800;margin:6px 0;color:var(--ink);text-align:center;line-height:1.35}
.an-var{justify-content:center}
.an .an-var .chip{font-family:var(--f-display);font-size:calc(19px * var(--fs));min-width:7.5em;min-height:calc(48px * var(--fs));border:3px solid var(--stripe);box-shadow:0 4px 0 var(--stripe)}
.an-msg{min-height:2.6em;margin:4px 0 0;text-align:center;font-weight:800;line-height:1.3}
.an-msg.bine{color:var(--leaf-deep)} .an-msg.rau{color:var(--berry)}
.an-final{text-align:center}
.an-scor{font-family:var(--f-display);font-size:calc(54px * var(--fs));color:var(--leaf-deep);animation:pa-pop .5s}

@keyframes pa-pop{0%{transform:scale(.6)}70%{transform:scale(1.15)}100%{transform:none}}
@media (prefers-reduced-motion: reduce){
  .ps-slot.ps-rez,.an-serie,.an-scor{animation:none!important}
  .pa-seg,.pa-schanim *{transition:none!important}
}
html.a-still .ps-slot.ps-rez,html.a-still .an-scor{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}