/* aplicatie.css — stiluri proprii lecției „Alege numerele cu diferența dată” (doar variabile de culoare).
   Aceleași culori în toată lecția: numărul mare = albastru (sky), numărul mic = verde (leaf), diferența = roșu (berry). */

/* ---------- culorile rolurilor ---------- */
.df-cm{color:var(--sky)}
.df-cn{color:var(--leaf-deep)}
.df-cd{color:var(--berry)}

/* ---------- planșe desenate ---------- */
.plate .df-card,.plate .df-cov,.plate .pn-live{background:var(--card);color:var(--ink);border-radius:12px;padding:14px 16px;font-weight:800;text-align:center}
.df-nota{margin:8px 0 0;font-size:calc(18px * var(--fs));line-height:1.35;color:var(--ink)}
.df-tinta{margin:0 0 8px;font-size:calc(19px * var(--fs))}

/* banda de comparație: bara mare = partea cât numărul mic + diferența; acolada roșie stă exact sub diferență */
.df-bare{text-align:left}
.df-r{display:flex;align-items:center;gap:10px;margin:6px 0}
.df-n{flex:0 0 4.4em;text-align:right;font-family:var(--f-display);font-size:calc(21px * var(--fs));line-height:1}
.df-bara{flex:1;display:flex;height:calc(28px * var(--fs));min-width:0}
.df-p{display:block;width:var(--a);background:var(--leaf);border-radius:8px 0 0 8px}
.df-r:nth-child(2) .df-p{border-radius:8px}
.df-pm{background:var(--sky)}
.df-d{display:block;width:var(--b);border-radius:0 8px 8px 0;background:repeating-linear-gradient(135deg,var(--berry) 0 8px,var(--berry-tint) 8px 12px)}
.df-leg{margin-top:0}
.df-leg .df-bara{height:calc(34px * var(--fs))}
.df-sp{flex:0 0 var(--a)}
.df-dl{flex:0 0 var(--b);position:relative;height:8px;border:3px solid var(--berry);border-bottom:0;border-radius:4px 4px 0 0;box-sizing:border-box}
.df-dl em{position:absolute;left:50%;top:10px;transform:translateX(-50%);white-space:nowrap;font-style:normal;font-weight:900;color:var(--berry);font-size:calc(16px * var(--fs))}
.df-ingust .df-dl em{left:auto;right:0;transform:none}

/* axa numerelor (SVG) */
.dfa{display:block;width:100%;height:auto;overflow:visible;font-family:var(--f-display)}
.dfa-l,.dfa-t{stroke:var(--ink);stroke-width:3;stroke-linecap:round}
.dfa-t{stroke-width:2}
.dfa-v{fill:var(--ink)}
.dfa-n{fill:var(--muted);font-size:15px;font-weight:800;text-anchor:middle}
.dfa-a{fill:none;stroke:var(--berry);stroke-width:4;stroke-linecap:round}
.dfa-a-n{fill:var(--berry);font-size:21px;font-weight:900;text-anchor:middle}
.dfa-s{fill:none;stroke:var(--sun-ink);stroke-width:3;stroke-dasharray:6 5}
.dfa-s-n{fill:var(--sun-ink);font-size:19px;font-weight:900;text-anchor:middle}
.dfa-pn,.dfa-pm{stroke:var(--card);stroke-width:2.5}
.dfa-pn{fill:var(--leaf)} .dfa-pm{fill:var(--sky)}
.dfa-bn,.dfa-bm{font-size:18px;font-weight:900;text-anchor:middle}
.dfa-bn{fill:var(--leaf-deep)} .dfa-bm{fill:var(--sky)}
.dfa-anim{stroke-dasharray:100;stroke-dashoffset:100;animation:dfa-draw .9s ease-out forwards}
.dfa-anim-n{opacity:0;animation:dfa-fade .4s .6s ease-out forwards}
@keyframes dfa-draw{to{stroke-dashoffset:0}}
@keyframes dfa-fade{to{opacity:1}}

/* copertă: un singur ceas (js/aplicatie.js) schimbă perechea, arcul și textele odată */
.df-cov{padding:14px 16px 16px!important}
.df-cov-eq{margin:6px 0 0;font-family:var(--f-display);font-size:calc(40px * var(--fs));line-height:1.1}
.df-cov-eq .dfk-m,.df-cov-txt .dfk-m{color:var(--sky)}
.df-cov-eq .dfk-n,.df-cov-txt .dfk-n{color:var(--leaf-deep)}
.df-cov-eq .dfk-d,.df-cov-txt .dfk-d{color:var(--berry)}
.df-cov-txt{margin:6px 0 0;font-size:calc(18px * var(--fs));color:var(--muted)}

/* stațiile 3 și 8: rânduri „păstrez / elimin” */
.df-ord p,.df-est p.df-ok,.df-est p.df-no{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:8px 0;padding:8px 14px;border-radius:12px;text-align:left}
.df-ord p{font-size:calc(26px * var(--fs));font-family:var(--f-display)}
.df-est p.df-ok,.df-est p.df-no{font-size:calc(18px * var(--fs))}
.df-ord em,.df-est em{font-style:normal;font-family:var(--f-body);font-size:calc(15px * var(--fs));font-weight:900;white-space:nowrap}
.df-ok{background:var(--leaf-tint)} .df-ok em{color:var(--leaf-deep)}
.df-no{background:var(--berry-tint)} .df-no em{color:var(--berry)}

/* stația 4: trei întrebări, același calcul */
.df-tab{display:grid;grid-template-columns:1fr auto;gap:8px 14px;align-items:center;text-align:left;font-size:calc(18px * var(--fs))}
.df-tab>span{background:var(--sun-tint);border-radius:10px;padding:6px 12px}
.df-tab>b{font-family:var(--f-display);font-size:calc(24px * var(--fs));white-space:nowrap}
.df-tab .df-tab-r{background:none;text-align:right;color:var(--muted)}

/* stația 6: mulțimea și pașii */
.df-mult{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:10px}
.df-mult span{display:inline-flex;align-items:center;justify-content:center;min-width:2.6em;height:calc(46px * var(--fs));border:3px solid var(--line);border-radius:12px;font-family:var(--f-display);font-size:calc(24px * var(--fs))}
.df-mult .df-ales-m{border-color:var(--sky);background:var(--sky-tint);color:var(--sky)}
.df-mult .df-ales-n{border-color:var(--leaf);background:var(--leaf-tint);color:var(--leaf-deep)}
.df-pas{margin:6px 0;font-size:calc(22px * var(--fs))}
.df-pas em{font-style:normal;font-size:calc(15px * var(--fs));color:var(--leaf-deep)}

/* stația 10: calculul în coloană (semnul la dreapta primului număr) și proba */
.df-pr{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap}
.dfc{display:inline-grid;grid-template-columns:repeat(var(--n),1.05em) 1.05em;font-family:var(--f-display);font-weight:800;font-size:calc(40px * var(--fs));line-height:1.15;font-variant-numeric:tabular-nums;color:var(--ink)}
.dfc>span{display:flex;align-items:center;justify-content:center}
.dfc-h{font-size:.4em;font-weight:900;border-radius:6px;margin:0 2px 4px;line-height:1.6}
.dfc-o0{color:var(--berry);background:var(--berry-tint)} .dfc-o1{color:var(--leaf-deep);background:var(--leaf-tint)} .dfc-o2{color:var(--sky);background:var(--sky-tint)} .dfc-o3{color:var(--sun-ink);background:var(--sun-tint)}
.dfc-sub{border-bottom:3px solid var(--ink)}
.dfc-semn,.dfc-rez{color:var(--berry)}
.df-sag{font-size:calc(30px * var(--fs));color:var(--muted)}
.df-pr-t{display:flex;flex-direction:column;gap:6px;font-size:calc(22px * var(--fs));text-align:left}

/* ---------- laborator: panoul cu numere ---------- */
.pn-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))}
.pn-tinta{font-size:calc(19px * var(--fs));color:var(--ink)}
.pn-tinta b{color:var(--berry);font-family:var(--f-display);font-size:1.3em}
.pn-tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:10px 0 14px}
.pn .pn-tiles .chip.pn-t{min-height:calc(54px * var(--fs));display:flex;align-items:center;justify-content:center;padding:4px 10px;font-family:var(--f-display);font-size:calc(24px * var(--fs));color:var(--ink);border:3px solid var(--stripe);border-radius:14px;box-shadow:0 5px 0 var(--stripe);cursor:pointer}
.pn .pn-tiles .chip.pn-t:hover{transform:translateY(-2px)}
.pn .pn-tiles .chip.pn-t.ales{background:var(--sun-tint);border-color:var(--sun-ink);box-shadow:0 5px 0 var(--sun-ink);transform:translateY(-3px)}
.pn .pn-tiles .chip.pn-t.e-m{background:var(--sky);border-color:var(--sky);color:var(--card);box-shadow:0 5px 0 var(--ink)}
.pn .pn-tiles .chip.pn-t.e-n{background:var(--leaf);border-color:var(--leaf);color:var(--on-leaf);box-shadow:0 5px 0 var(--ink)}
.pn .pn-tiles .chip.pn-t:disabled{opacity:.6;transform:none}
.pn-eq{min-height:1.5em;margin:0;text-align:center;font-weight:800;font-size:calc(22px * var(--fs));color:var(--muted)}
.pn-eq b{font-family:var(--f-display)}
.pn-bine{color:var(--leaf-deep);font-size:calc(16px * var(--fs))}
.pn-act{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-top:10px;padding-top:10px;border-top:2px dashed var(--line)}
.pn-act .verif{margin-left:auto}
.pn-act .verif:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}
.pn-live{min-height:calc(230px * var(--fs))}
.pn-ins{margin:0 0 6px;font-size:calc(22px * var(--fs))}
.pn-ins b{font-family:var(--f-display)}
.pn-mic{font-size:calc(15px * var(--fs));color:var(--muted)}

/* ---------- 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:df-pop .4s ease-out}
.an-q{font-size:calc(24px * var(--fs));font-weight:800;margin:10px 0;color:var(--ink);text-align:center}
.an-q b{font-family:var(--f-display);font-size:1.25em}
.an-var{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.an-var .chip{min-height:calc(52px * var(--fs));font-size:calc(20px * var(--fs));display:flex;align-items:center;justify-content:center}
.an-msg{min-height:2.6em;margin:10px 0 0;text-align:center;font-weight:800;font-size:calc(16px * var(--fs))}
.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:df-pop .5s}
@keyframes df-pop{0%{transform:scale(.6)}70%{transform:scale(1.15)}100%{transform:none}}

/* fără animații (accesibilitate) și mișcare redusă: stare statică completă (arcul desenat, eticheta vizibilă) */
html.a-still .dfa-anim{animation:none!important;stroke-dashoffset:0!important}
html.a-still .dfa-anim-n{animation:none!important;opacity:1!important}
html.a-still :is(.an-scor,.an-serie){animation:none!important}
@media (prefers-reduced-motion: reduce){
  .dfa-anim{animation:none!important;stroke-dashoffset:0!important}
  .dfa-anim-n{animation:none!important;opacity:1!important}
  .an-scor,.an-serie{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}
.df-ord p.df-ad{background:var(--sun-tint);font-size:calc(20px * var(--fs))}
.df-ad em{color:var(--sun-ink)}
.dfa-alt{fill:var(--card);stroke:var(--muted);stroke-width:2.5}
.an-emoji{margin:0;font-size:calc(64px * var(--fs));line-height:1.2}