/* UNMCG — Logičke zagonetke
   Isti identitet kao ostatak sistema: tamnoplava / zlatna / bijela / svijetloplava.
   Zelena = tačno, crvena = netačno. Mobile-first, bez eksternih biblioteka. */

.lz-app{
  --lz-navy:#0f2a4a; --lz-navy-2:#16375f; --lz-gold:#d4a72c; --lz-blue:#e8f0fb;
  --lz-blue-line:#c7d8f0; --lz-ink:#12233b; --lz-muted:#5b6b80;
  --lz-ok:#1f9d57; --lz-err:#d43c3c; --lz-white:#fff;
  --lz-radius:16px; --lz-shadow:0 10px 30px rgba(15,42,74,.12);
  max-width:960px; margin:0 auto; padding:0 14px; color:var(--lz-ink); font-family:inherit;
}
.lz-app *{box-sizing:border-box}

/* Header */
.lz-head{position:relative;overflow:hidden;text-align:center;border-radius:var(--lz-radius);
  padding:30px 18px 24px;background:linear-gradient(160deg,var(--lz-navy),var(--lz-navy-2));
  color:var(--lz-white);box-shadow:var(--lz-shadow)}
.lz-grid-bg{position:absolute;inset:0;opacity:.13;pointer-events:none;
  background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);
  background-size:28px 28px;
  -webkit-mask-image:radial-gradient(circle at 50% 35%,#000 42%,transparent 78%);
          mask-image:radial-gradient(circle at 50% 35%,#000 42%,transparent 78%)}
.lz-title{position:relative;margin:0 0 6px;font-size:1.9rem;font-weight:800}
.lz-title::after{content:"";display:block;width:52px;height:3px;background:var(--lz-gold);margin:10px auto 0;border-radius:3px}
.lz-sub{position:relative;margin:0 auto 14px;max-width:46ch;color:#d9e4f4}
.lz-stats-strip{position:relative;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;font-size:.82rem;color:#cfdcef;margin-bottom:14px}
.lz-stats-strip b{color:var(--lz-gold)}
.lz-actions{position:relative;display:flex;gap:10px;justify-content:center;flex-wrap:wrap}

/* Dugmad */
.lz-btn{font:inherit;font-weight:600;border:0;border-radius:12px;padding:11px 17px;min-height:44px;cursor:pointer;
  transition:transform .12s ease,filter .12s ease,background .12s ease}
.lz-btn:active{transform:scale(.98)}
.lz-btn-gold{background:var(--lz-gold);color:#3a2c05}
.lz-btn-gold:hover{filter:brightness(1.05)}
.lz-btn-ghost{background:rgba(255,255,255,.1);color:var(--lz-white);border:1px solid rgba(255,255,255,.22)}
.lz-btn-ghost:hover{background:rgba(255,255,255,.18)}

/* Filteri */
.lz-filters{margin:18px 0 8px;display:grid;gap:10px}
.lz-filter-row{display:flex;flex-wrap:wrap;gap:8px}
.lz-chip{font:inherit;font-size:.85rem;font-weight:600;border:1px solid var(--lz-blue-line);
  background:var(--lz-blue);color:var(--lz-navy);border-radius:999px;padding:8px 14px;min-height:40px;cursor:pointer;
  transition:background .12s,border-color .12s,color .12s}
.lz-chip:hover{border-color:var(--lz-gold)}
.lz-chip.is-active{background:var(--lz-navy);color:#fff;border-color:var(--lz-navy)}
.lz-chip-cat.is-active{background:var(--lz-gold);color:#3a2c05;border-color:var(--lz-gold)}

/* Grid kartica */
.lz-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1rem;margin:14px 0;align-items:start}
.lz-card{display:flex;flex-direction:column;gap:.5rem;background:#fff;border:1px solid var(--lz-blue-line);
  border-radius:14px;padding:1.1rem 1.15rem;box-shadow:0 5px 16px rgba(15,42,74,.06);cursor:pointer;
  transition:transform .14s ease,box-shadow .14s ease,border-color .14s ease;text-align:left}
.lz-card:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(15,42,74,.13);border-color:var(--lz-gold)}
.lz-card-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.lz-card-cat{font-size:.74rem;font-weight:700;color:var(--lz-navy);background:var(--lz-blue);
  border-radius:999px;padding:3px 9px}
.lz-card-lvl{font-size:.68rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--lz-muted)}
.lz-card-title{margin:.1rem 0 0;font-size:1.02rem;color:var(--lz-navy);font-weight:700}
.lz-card-ex{margin:0;font-size:.85rem;color:var(--lz-muted);line-height:1.4;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.lz-card.is-solved{border-color:var(--lz-ok)}
.lz-card-done{font-size:.72rem;font-weight:700;color:var(--lz-ok)}
.lz-empty{text-align:center;color:var(--lz-muted);padding:24px}
.lz-more-wrap{display:flex;justify-content:center;margin:6px 0 18px}
.lz-more{min-width:200px}
.lz-reset{position:relative;display:inline-block;margin:-4px auto 6px;background:transparent;border:0;
  color:#cfdcef;font:inherit;font-size:.78rem;text-decoration:underline;cursor:pointer;opacity:.8}
.lz-reset:hover{opacity:1;color:#fff}

/* Modal */
.lz-modal{position:fixed;inset:0;z-index:99999;display:flex;align-items:flex-start;justify-content:center;
  padding:20px 14px;background:rgba(15,42,74,.55);overflow:auto}
.lz-modal[hidden]{display:none}
.lz-modal-box{position:relative;background:#fff;border-radius:var(--lz-radius);max-width:600px;width:100%;
  padding:26px 22px;box-shadow:0 20px 60px rgba(0,0,0,.3);margin:auto}
.lz-modal-x{position:absolute;top:10px;right:12px;border:0;background:transparent;font-size:1.7rem;line-height:1;
  cursor:pointer;color:var(--lz-muted);width:38px;height:38px}
.lz-m-meta{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:8px}
.lz-badge{font-size:.74rem;font-weight:700;background:var(--lz-navy);color:#fff;border-radius:999px;padding:4px 11px}
.lz-badge-lvl{background:var(--lz-gold);color:#3a2c05}
.lz-m-title{margin:0 0 8px;font-size:1.25rem;color:var(--lz-navy)}
.lz-m-text{margin:0 0 16px;font-size:1rem;line-height:1.5;white-space:pre-line}

/* Odgovori */
.lz-choices{display:grid;gap:9px;margin-bottom:12px}
.lz-choice{display:flex;align-items:center;gap:10px;text-align:left;font:inherit;font-size:.98rem;
  border:2px solid var(--lz-blue-line);background:#fff;color:var(--lz-ink);border-radius:12px;
  padding:12px 14px;cursor:pointer;min-height:48px;transition:border-color .12s,background .12s}
.lz-choice:hover{border-color:var(--lz-navy)}
.lz-choice.is-selected{border-color:var(--lz-navy);background:var(--lz-blue)}
.lz-choice.is-correct{border-color:var(--lz-ok);background:#e4f6ec}
.lz-choice.is-wrong{border-color:var(--lz-err);background:#fbe9e9}
.lz-choice-k{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:var(--lz-navy);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:.8rem;font-weight:700}
.lz-input-wrap{margin-bottom:12px}
.lz-input{width:100%;font:inherit;font-size:1.1rem;padding:12px 14px;border:2px solid var(--lz-blue-line);
  border-radius:12px}
.lz-input:focus{outline:none;border-color:var(--lz-navy);box-shadow:0 0 0 3px rgba(15,42,74,.15)}

.lz-feedback{min-height:1.4em;margin:0 0 12px;font-weight:700}
.lz-feedback.is-ok{color:var(--lz-ok)}
.lz-feedback.is-err{color:var(--lz-err)}

.lz-m-actions{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.lz-hints,.lz-solution{background:#fbfcfe;border:1px dashed var(--lz-blue-line);border-radius:12px;
  padding:13px 15px;margin-bottom:12px}
.lz-hints h4,.lz-solution h4{margin:0 0 6px;font-size:.9rem;color:var(--lz-navy)}
.lz-hints ul{margin:0;padding-left:18px}
.lz-hints li{margin:4px 0;font-size:.9rem}
.lz-solution p{margin:0;font-size:.92rem;line-height:1.5}
.lz-m-nav{display:flex;justify-content:flex-end}

.lz-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
.lz-app :focus-visible{outline:3px solid var(--lz-gold);outline-offset:2px;border-radius:6px}

/* Responzivno */
@media (max-width:640px){
  .lz-title{font-size:1.6rem}
  .lz-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:430px){
  .lz-grid{grid-template-columns:1fr}
  .lz-modal-box{padding:22px 16px}
}
@media (prefers-reduced-motion:reduce){
  .lz-app *{transition:none !important;animation:none !important}
}