/* aplicatie.css — stiluri proprii lecției „Distributivitatea și factorul lipsă” (doar variabile de culoare).
   Toate clasele proprii au prefixul df-, ca să nu se amestece cu edulogia.css. */

/* ---------- cardul planșelor ---------- */
.df-card{background:var(--card);color:var(--ink);border-radius:12px;padding:10px 14px;text-align:center;font-weight:800}

/* ---------- modelul de arie pe rețea (SVG) ---------- */
.df-svg{display:block;width:100%;height:auto;max-height:300px;margin:0 auto;font-family:var(--f-display);overflow:visible}
.df-svg text{text-anchor:middle;dominant-baseline:central;font-weight:800}
.df-p0{fill:var(--sky-tint);stroke:none}
.df-p1{fill:var(--berry-tint);stroke:none}
.df-hb{fill:var(--berry-tint)}
.df-hl{stroke:var(--berry);stroke-width:3;opacity:.55}
.df-retea{fill:none;stroke:var(--muted);stroke-width:1;opacity:.5}
.df-contur{fill:none;stroke:var(--ink);stroke-width:2.5}
.df-cut{stroke:var(--ink);stroke-width:4;stroke-dasharray:8 5;stroke-linecap:round}
.df-cov{fill:var(--sun);stroke:none}
.df-qm{fill:var(--on-sun);font-size:44px;font-weight:900}
.df-in{fill:var(--ink);paint-order:stroke;stroke:var(--card);stroke-width:4px;stroke-linejoin:round}
.df-acol{fill:none;stroke:var(--muted);stroke-width:2}
.df-et{font-size:22px;font-weight:900}
.df-tot{fill:var(--ink)}
.df-et0{fill:var(--sky)}
.df-et1{fill:var(--berry)}
.df-rep{fill:var(--leaf-deep)}
.df-mic .df-et{font-size:26px}
/* mișcarea tăieturii: un singur ceas (js/aplicatie.js) schimbă poziția; aici doar trecerea lină */
.df-viu [data-pos]{transition:transform .6s ease}
.df-cov,.df-qm{transition:opacity .45s}
.df-arata .df-cov,.df-arata .df-qm{opacity:0}
.df-static [data-pos]{transition:none!important}

/* egalitatea de sub desen */
.df-eq{margin:8px 0 0;font-family:var(--f-display);font-weight:800;font-size:calc(26px * var(--fs));line-height:1.25;color:var(--ink);white-space:nowrap}
.df-eq b{color:var(--ink)}
.df-eq .df-k{color:var(--sky)}
.df-eq .df-r{color:var(--berry)}
.df-rp{color:var(--leaf-deep);background:var(--leaf-tint);border-radius:8px;padding:0 6px}
.df-gol{display:inline-flex;align-items:center;justify-content:center;min-width:1.5em;height:1.3em;vertical-align:middle;border:3px dashed var(--sun-edge);border-radius:9px;background:var(--sun-tint);color:var(--sun-ink);font-weight:900;line-height:1}
.df-gol.plin{border-style:solid;border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep);animation:df-pop .35s}
.df-sub{margin:4px 0 0;font-family:var(--f-display);font-size:calc(20px * var(--fs));color:var(--muted)}
.df-sub b{color:var(--berry)}
[data-e].nou{display:inline-block;animation:df-pop .4s ease-out}
.df-doua{display:grid;grid-template-columns:1fr 1fr;gap:10px;align-items:end}
.df-doua .df-sub{color:var(--ink)}

/* ---------- laboratoare: cadru comun ---------- */
/* coloana exercițiului e mai lată la laboratoare */
html:not(.flow) .view:has(.df-lab) .lesson{grid-template-columns:minmax(0,1.55fr) minmax(0,.45fr)}
.df-top{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--muted);font-size:calc(14px * var(--fs));margin-bottom:6px}
.df-dim{margin-left:auto;color:var(--sky)}
.df-bar{flex:1;height:10px;background:var(--line);border-radius:99px;overflow:hidden}
.df-bar i{display:block;height:100%;background:var(--leaf);transition:width .4s}
.df-corp{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:16px;align-items:center}
.df-des{padding:8px 10px;min-height:150px;display:flex;flex-direction:column;justify-content:center}
.df-des .df-svg{max-height:204px}
.df-ctl{display:flex;flex-direction:column;align-items:center;gap:10px;min-width:0}
.df-eq-lab{margin:0;font-size:calc(25px * var(--fs))}
/* butoanele de mutat tăietura: mari, pe același rând cu poziția */
.df-muta{display:flex;align-items:center;justify-content:center;gap:12px}
.df-muta .btn{min-width:calc(58px * var(--fs));min-height:calc(48px * var(--fs));font-size:calc(22px * var(--fs))}
.df-muta .btn:disabled{opacity:.4;box-shadow:none;cursor:not-allowed}
.df-poz{display:inline-flex;align-items:center;gap:6px;height:calc(48px * var(--fs));padding:0 14px;border-radius:12px;background:var(--sky-tint);color:var(--ink);font-family:var(--f-display);font-size:calc(22px * var(--fs));font-weight:900}
.df-poz b{color:var(--sky)} .df-poz .df-pq{color:var(--sun-ink)}
/* căsuța de completat din egalitate */
.df-slot{display:inline-flex;align-items:center;justify-content:center;min-width:1.6em;height:1.35em;vertical-align:middle;border:3px dashed var(--sun-edge);border-radius:10px;background:var(--sun-tint);color:var(--sun-ink);font-weight:900;line-height:1}
.df-slot.plin{border-style:solid;border-color:var(--berry);background:var(--berry-tint);color:var(--berry)}
.df-slot.pop{animation:df-pop .35s ease-out}
.df-slot.bun{border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep)}
.df-slot.rau{animation:df-shake .45s}
/* plăcuțele cu numere: butoane mari, la fel, cu starea „ales” clară */
.df-tiles{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.df-lab .df-tiles .chip.df-t{min-width:calc(52px * var(--fs));min-height:calc(50px * var(--fs));padding:4px 10px;font-size:calc(22px * var(--fs));font-weight:900;color:var(--ink);border:3px solid var(--stripe);border-radius:14px;box-shadow:0 5px 0 var(--stripe);cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.df-lab .df-tiles .chip.df-t:hover:not(:disabled){transform:translateY(-2px)}
.df-lab .df-tiles .chip.df-t.ales{background:var(--berry);border-color:var(--berry);color:var(--card);box-shadow:0 5px 0 var(--ink);transform:translateY(-3px)}
.df-lab .df-tiles .chip.df-t.good{background:var(--leaf-tint);border-color:var(--leaf);color:var(--leaf-deep)}
.df-lab .df-tiles .chip.df-t.bad{background:var(--berry-tint);border-color:var(--berry);color:var(--berry)}
.df-lab .df-tiles .chip.df-t:disabled{cursor:default}
.df-lab .df-tiles .chip.df-t:disabled:not(.good):not(.ales):not(.bad){opacity:.5}
.df-var .chip.df-t{min-width:calc(76px * var(--fs))}
.df-made{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;min-height:28px;margin-top:6px}
.df-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));animation:df-pop .35s ease-out}
/* butoanele de jos: separate de plăcuțe */
.df-act{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);width:100%}
.df-act .verif,.df-act .df-next{margin-left:auto}
.df-act .verif:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}
.df-mij{justify-content:center;border-top:0}
.df-lab [hidden]{display:none!important}
.df-msg{min-height:1.4em;margin:0;text-align:center;font-weight:800;color:var(--muted);font-size:calc(16px * var(--fs))}
.df-msg.bine{color:var(--leaf-deep)} .df-msg.rau{color:var(--berry)}
.df-pus{color:var(--leaf-deep);background:var(--leaf-tint);border-radius:8px;padding:0 8px;display:inline-block;animation:df-pop .35s}

/* adevărat / fals: două plăcuțe mari, cu rolurile vizibile */
.df-af{display:flex;gap:14px;justify-content:center}
.df-af .btn{min-width:calc(150px * var(--fs));min-height:calc(54px * var(--fs));font-size:calc(19px * var(--fs));border:3px solid transparent}
.df-af .df-da{background:var(--leaf-tint);color:var(--leaf-deep);border-color:var(--leaf);box-shadow:0 5px 0 var(--leaf)}
.df-af .df-nu{background:var(--berry-tint);color:var(--berry);border-color:var(--berry);box-shadow:0 5px 0 var(--berry)}
.df-af .btn:disabled{opacity:.45;box-shadow:none}
.df-af .btn.good{opacity:1;outline:4px solid var(--leaf);outline-offset:2px}
.df-af .btn.bad{opacity:1;outline:4px dashed var(--berry);outline-offset:2px}
.df-eg .df-msg{font-size:calc(15px * var(--fs));line-height:1.35}
.df-asteapta{margin:0;color:var(--muted);font-weight:800}
.df-eg .df-des .df-svg{max-height:210px}
.df-eg .df-des .df-sub{color:var(--ink)}

/* antrenament */
.df-eq-an{text-align:center;font-size:calc(32px * var(--fs));margin:18px 0 16px}
.df-serie{transition:transform .2s}
.df-serie.aprinsa{color:var(--berry);animation:df-pop .4s ease-out}
.df-an .df-msg{margin-top:12px}
.df-final{text-align:center}
.df-final .df-eq{white-space:normal}
.df-scor{font-family:var(--f-display);font-size:calc(54px * var(--fs));color:var(--leaf-deep);animation:df-pop .5s}

@keyframes df-pop{0%{transform:scale(.6)}70%{transform:scale(1.15)}100%{transform:none}}
@keyframes df-shake{0%,100%{transform:none}25%{transform:translateX(-6px)}75%{transform:translateX(6px)}}

/* telefon: desenul deasupra, comenzile dedesubt */
html.flow .df-corp{grid-template-columns:1fr}
html.flow .df-eq{white-space:normal}
html.flow .df-af .btn{min-width:0;flex:1}

/* mișcare redusă (sistem): animațiile decorative se opresc; ceasul se oprește din js/aplicatie.js */
@media (prefers-reduced-motion: reduce){
  .df-viu [data-pos],.df-cov,.df-qm{transition:none!important}
  .df-gol,.df-slot,.df-gata,.df-pus,.df-scor,.df-serie,[data-e].nou{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}