/* aplicatie.css — stiluri proprii lecției „Adună, scade, înmulțește și împarte” (doar variabile de culoare).
   Clasele proprii au prefixe: om- (planșe), oms- (exercițiul care se strânge), t- (tokeni), pp-, pz-, dg-, an- (laboratoare). */

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

/* ---------- planșe desenate ---------- */
.plate .om-str,.plate .om-doi,.plate .om-scara,.plate .om-dir,.plate .om-cuv{background:var(--card);color:var(--ink);border-radius:12px;padding:14px 16px;font-weight:800}

/* tokenii unui exercițiu: același contur pentru toți, ca aprinderea să nu miște rândul */
.t-n,.t-o,.t-p{display:inline-flex;align-items:center;justify-content:center;line-height:1.15;border-bottom:4px solid transparent;border-radius:10px;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;transition:background .3s,border-color .3s,color .3s}
.t-n{padding:0 6px;color:var(--ink)}
.t-o{position:relative;padding:0 4px;color:var(--sky)}
.t-p{color:var(--berry);padding:0 1px}
.t-n.activ,.t-o.activ{background:var(--sun-tint);border-bottom-color:var(--berry);color:var(--ink)}
.t-n.nou{background:var(--leaf-tint);color:var(--leaf-deep);animation:om-pop .45s ease-out}
.t-b{position:absolute;top:-.55em;left:50%;transform:translateX(-50%);min-width:1.3em;height:1.3em;border-radius:99px;background:var(--berry);color:var(--card);font-size:.42em;line-height:1.3em;text-align:center;font-family:Nunito,system-ui,sans-serif}

/* exercițiul care se strânge (copertă, stațiile 3, 6, 7) */
.om-str{display:grid;gap:8px}
.oms-sus{display:flex;align-items:center;justify-content:space-between;gap:12px}
.oms-linie{flex:1;display:flex;flex-wrap:nowrap;justify-content:center;align-items:center;gap:4px;min-height:calc(62px * var(--fs));font-size:calc(32px * var(--fs));white-space:nowrap}
.oms-nota{margin:0;min-height:1.4em;text-align:center;color:var(--muted);font-size:calc(16px * var(--fs))}
.oms-ist{list-style:none;margin:0;padding:8px 12px;border-top:2px dashed var(--line);display:grid;gap:2px;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(21px * var(--fs));color:var(--ink)}
.oms-ist li{visibility:hidden}
.oms-ist li.vaz{visibility:visible}
.oms-ist li.nou{color:var(--leaf-deep);animation:om-pop .45s ease-out;transform-origin:left center}
.om-str.static .oms-linie{padding-top:10px}
/* scara mică: treapta operației aprinse se aprinde și ea */
.oms-sc{display:flex;flex-direction:column;gap:4px;flex:0 0 auto}
.oms-sc span{border:2px solid var(--line);border-radius:8px;padding:2px 10px;font-weight:900;font-size:calc(16px * var(--fs));text-align:center;color:var(--ink);background:var(--card);transition:background .3s,transform .3s}
.oms-sc span[data-r="1"]{margin-left:14px}
.oms-sc span[data-r="2"]{margin-left:28px}
.oms-sc span.on{background:var(--sun);border-color:var(--sun-edge);color:var(--on-sun);transform:scale(1.08)}
.om-pereche{display:grid;gap:10px}
.om-str.mini{padding:10px 14px}
.om-str.mini .oms-linie{min-height:calc(52px * var(--fs));font-size:calc(30px * var(--fs))}
.om-str.mini .oms-ist{font-size:calc(19px * var(--fs));padding:4px 12px}

/* stația 1: doi copii, același exercițiu */
.om-doi{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.od-c{position:relative;border:3px solid var(--line);border-radius:14px;padding:10px 14px 12px;background:var(--card)}
.od-c p{margin:4px 0;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(26px * var(--fs));line-height:1.2}
.od-c u{text-decoration-color:var(--berry);text-decoration-thickness:3px}
.od-cine{display:inline-block;font-size:calc(16px * var(--fs));color:var(--muted)}
.od-semn{position:absolute;top:6px;right:12px;font-size:calc(30px * var(--fs));font-weight:900}
.od-c.rau{border-color:var(--berry)} .od-c.rau .od-semn{color:var(--berry)}
.od-c.bun{border-color:var(--leaf)} .od-c.bun .od-semn{color:var(--leaf-deep)}

/* stația 2: scara priorităților */
.om-scara{display:grid;gap:10px;padding:18px 16px!important}
.sc-tr{display:flex;align-items:center;gap:14px;border-radius:14px;padding:8px 14px;border:2px solid var(--line)}
.sc-tr b{flex:0 0 auto;min-width:2.6em;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(34px * var(--fs));line-height:1.1;color:var(--ink);background:var(--card);border-radius:10px;padding:2px 8px;border:2px solid var(--line)}
.sc-tr span{display:flex;flex-direction:column;font-size:calc(20px * var(--fs));color:var(--ink)}
.sc-tr small{font-size:calc(15px * var(--fs));color:var(--muted);font-weight:700}
.sc-tr.t0{background:var(--berry-tint);margin-right:22%}
.sc-tr.t1{background:var(--sun-tint);margin-left:11%;margin-right:11%}
.sc-tr.t2{background:var(--leaf-tint);margin-left:22%}

/* stația 4: de la stânga la dreapta */
.om-dir{display:grid;gap:12px}
.dr-ex{margin:0;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(40px * var(--fs));line-height:1.1}
.dr-c{display:flex;align-items:center;gap:10px;flex-wrap:wrap;border:3px solid var(--line);border-radius:14px;padding:8px 14px;font-size:calc(22px * var(--fs))}
.dr-c u{text-decoration-color:var(--berry);text-decoration-thickness:3px}
.dr-s{font-size:calc(26px * var(--fs));font-weight:900}
.dr-sag{color:var(--muted)}
.dr-c.bun{border-color:var(--leaf)} .dr-c.bun .dr-s{color:var(--leaf-deep)}
.dr-c.rau{border-color:var(--berry);opacity:.85} .dr-c.rau .dr-s{color:var(--berry)}

/* stația 11: cuvintele care arată operația */
.om-cuv{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 12px;align-items:center;font-size:calc(19px * var(--fs))}
.om-cuv span{background:var(--sky-tint);border-radius:10px;padding:6px 12px}
.om-cuv b{min-width:1.8em;text-align:center;font-size:calc(28px * var(--fs));background:var(--sun);color:var(--on-sun);border-radius:10px;padding:0 8px}

/* ---------- laborator 1: pas cu pas ---------- */
.pp{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:8px 18px;align-items:start}
.pp-stg{display:grid;gap:8px;min-width:0}
.pp-top,.pz-top,.dg-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))}
.pp-pas{color:var(--sky)}
.pp-expr{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;min-height:calc(64px * var(--fs));font-size:calc(32px * var(--fs))}
.pp .pp-op{min-width:calc(50px * var(--fs));height:calc(52px * var(--fs));padding:0 8px;border:3px solid var(--sky);background:var(--sky-tint);color:var(--ink);border-radius:12px;box-shadow:0 4px 0 var(--sky);font-size:calc(30px * var(--fs));cursor:pointer}
.pp .pp-op:hover:not(:disabled){transform:translateY(-2px)}
.pp .pp-op:disabled{opacity:.5;cursor:default;box-shadow:none}
.pp .pp-op.activ{opacity:1;background:var(--sun);border-color:var(--sun-edge);color:var(--on-sun);box-shadow:0 4px 0 var(--sun-edge)}
.pp-scrie{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;padding-top:8px;border-top:2px dashed var(--line)}
.pp-calc{font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(24px * var(--fs));color:var(--ink);min-width:7em;text-align:right}
.pp-in{width:calc(120px * var(--fs));height:calc(52px * var(--fs));border:3px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink);font:inherit;font-weight:800;font-size:calc(26px * var(--fs));text-align:center}
.pp-in:focus{outline:none;border-color:var(--leaf)}
.pp-in:disabled{opacity:.6}
.pp-scrie .verif:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}
.pz-pas,.an-msg{min-height:1.4em;margin:0;text-align:center;font-weight:800;color:var(--ink)}
.an-msg.bine{color:var(--leaf-deep)} .an-msg.rau{color:var(--berry)}
.pp-dr{display:flex;align-items:flex-start;gap:12px;min-width:0}
.pp-caiet{flex:1;min-width:0;border:2px solid var(--line);border-radius:12px;padding:6px 12px;background:var(--card);color:var(--ink)}
.pp-et{font-size:calc(13px * var(--fs));font-weight:800;color:var(--muted)}
.pp-ist{list-style:none;margin:0;padding:0;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(20px * var(--fs));line-height:1.35;overflow-wrap:anywhere}
.pp-ist li.nou{color:var(--leaf-deep);animation:om-pop .4s ease-out;transform-origin:left center}
.pp-act{grid-column:1/-1;display:flex;justify-content:center;min-height:0}
.pp-act:empty{display:none}
.scutura{animation:om-shake .45s}

/* ---------- laborator 2: pune parantezele ---------- */
.pz{display:grid;gap:10px}
.pz-tinta{background:var(--sun-tint);color:var(--ink);border-radius:999px;padding:4px 16px;font-size:calc(18px * var(--fs))}
.pz-tinta b{font-size:calc(24px * var(--fs));color:var(--berry)}
.pz-expr{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:2px;font-size:calc(34px * var(--fs))}
.pz-expr .t-o{margin:0 6px;color:var(--muted)}
.pz .pz-n{min-width:calc(66px * var(--fs));height:calc(62px * var(--fs));padding:0 10px;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(30px * var(--fs));cursor:pointer}
.pz .pz-n:hover:not(:disabled){transform:translateY(-2px);border-color:var(--sky)}
.pz .pz-n.in{background:var(--sky-tint)}
.pz .pz-n.cap{background:var(--berry-tint);border-color:var(--berry);box-shadow:0 4px 0 var(--berry)}
.pz .pz-n:disabled{cursor:default}
.pz-sl{display:inline-block;width:.5em;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-weight:900;font-size:calc(46px * var(--fs));line-height:1;color:transparent}
.pz-sl.pus{color:var(--berry);animation:om-pop .35s ease-out}
.pz-rez{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;font-weight:800}
.pz-et{color:var(--muted);font-size:calc(16px * var(--fs))}
.pz-val{min-width:3em;text-align:center;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(32px * var(--fs));background:var(--sky-tint);color:var(--ink);border-radius:12px;padding:0 12px}
.pz-val.bun{background:var(--leaf-tint);color:var(--leaf-deep)}
.pz-cmp{font-size:calc(18px * var(--fs))}
.pz-cmp.bine{color:var(--leaf-deep)} .pz-cmp.rau{color:var(--berry)}
.pz-pas{min-height:2.8em}
.pz-act,.dg-act{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-top:8px;border-top:2px dashed var(--line)}
.pz-loc,.dg-loc{flex:1;display:flex;justify-content:center}
.pz-act .verif:disabled,.dg-act .verif:disabled,.pz-sterge:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* ---------- laborator 3: detectivul greșelilor ---------- */
.dg{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:14px 20px;align-items:start}
.dg-st{display:grid;gap:6px;min-width:0}
.dg-caiet{border:2px solid var(--line);border-radius:12px;padding:8px 12px 10px;background:var(--card);color:var(--ink)}
.dg-ex{margin:0 0 4px;font-family:"Baloo 2",system-ui,sans-serif;font-size:calc(26px * var(--fs));font-weight:800}
.dg .dg-r{display:flex;align-items:center;gap:10px;flex-wrap:wrap;width:100%;margin-top:6px;padding:4px 12px;text-align:left;border:2px dashed var(--sky);background:var(--sky-tint);color:var(--ink);border-radius:10px;font-family:"Baloo 2",system-ui,sans-serif;font-weight:800;font-size:calc(23px * var(--fs));cursor:pointer;min-height:calc(46px * var(--fs))}
.dg .dg-r:hover:not(:disabled){border-style:solid}
.dg .dg-r.ales{border-style:solid;border-color:var(--berry);background:var(--berry-tint)}
.dg-eg{color:var(--muted)}
.dg .dg-r.taiat .dg-l{text-decoration:line-through;text-decoration-color:var(--berry);text-decoration-thickness:3px;opacity:.8}
.dg-fix{margin-left:auto;color:var(--leaf-deep);animation:om-pop .45s ease-out}
.dg .dg-r.stins{opacity:.4}
.dg .dg-r:disabled{cursor:default}
.dg-final{margin:8px 0 0;font-weight:800;color:var(--leaf-deep);font-size:calc(18px * var(--fs))}
.dg-dr{display:grid;gap:8px;min-width:0}
.dg-q{margin:0;font-weight:800;color:var(--ink);font-size:calc(17px * var(--fs))}
.dg-mot{display:grid;gap:8px}
.dg .dg-m{text-align:left;min-height:calc(46px * var(--fs));padding:6px 14px;border:3px solid var(--stripe);border-radius:14px;box-shadow:0 4px 0 var(--stripe);font-size:calc(16px * var(--fs));color:var(--ink);cursor:pointer}
.dg .dg-m:hover:not(:disabled){transform:translateY(-2px)}
.dg .dg-m.ales{background:var(--berry);border-color:var(--berry);color:var(--card);box-shadow:0 4px 0 var(--ink)}
.dg .dg-m:disabled{opacity:.6;transform:none}
.dg .dg-m.ales:disabled{opacity:1}

/* ---------- 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{transition:transform .2s}
.an-serie.aprinsa{color:var(--berry);animation:om-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(28px * var(--fs));font-weight:800;margin:6px 0 14px;color:var(--ink);text-align:center;font-family:"Baloo 2",system-ui,sans-serif;line-height:1.2}
.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{margin-top:12px}
.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:om-pop .5s}

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

/* telefon: exercițiile mai lungi trec pe rândul următor, laboratoarele se așază pe o coloană */
html.flow .oms-linie{flex-wrap:wrap;white-space:normal;gap:2px;font-size:calc(22px * var(--fs))}
html.flow .t-n{padding:0 3px}
html.flow .oms-sus{flex-direction:column}
html.flow .oms-sc{flex-direction:row}
html.flow .oms-sc span[data-r]{margin-left:0}
html.flow .pp,html.flow .dg{grid-template-columns:minmax(0,1fr)}
html.flow .pp-expr,html.flow .pz-expr{font-size:calc(26px * var(--fs))}
html.flow .pp .pp-op{min-width:calc(42px * var(--fs))}
html.flow .pz .pz-n{min-width:calc(52px * var(--fs));height:calc(54px * var(--fs));font-size:calc(24px * var(--fs))}
html.flow .om-doi{grid-template-columns:minmax(0,1fr)}

/* mișcare redusă (sistem) și „fără animații”: animațiile decorative se opresc; planșele care se strâng sunt oprite din js/aplicatie.js */
@media (prefers-reduced-motion: reduce){
  .t-n,.oms-ist li,.pp-ist li,.pz-sl,.dg-fix,.an-scor,.an-serie,.scutura{animation:none!important}
}
html.a-still :is(.t-n,.oms-ist li,.pp-ist li,.pz-sl,.dg-fix,.an-scor,.an-serie,.scutura){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}