/* =====================================================================
   ARXO naslovnica v32 — „Brzi kalkulator" (#izracun)
   Lijevo kompaktni parametri, desno veliki 3D model bez tamnog okvira,
   ispod modela staklena traka rezultata. Zajednički tokeni: css/naslovna-v32.css.
   JS: js/naslovna-brzi.js (sučelje, izračun modulima programa), js/naslovna-brzi3d.js (3D).
   ===================================================================== */
.bz { padding: 104px 0 84px; overflow: hidden; }
.bz .omot { position: relative; }
.bz::after { content: ''; position: absolute; z-index: -1; pointer-events: none; left: 50%; top: 42%; width: min(1500px, 120vw); height: 760px; transform: translate(-36%, -30%);
  background: radial-gradient(closest-side, rgba(255, 255, 255, .9), rgba(255, 255, 255, 0)); }
:root[data-tema="tamna"] .bz::after { background: radial-gradient(closest-side, rgba(70, 88, 170, .16), rgba(70, 88, 170, 0)); }
.bz-glava { text-align: center; max-width: 920px; margin: 0 auto 30px; }
.bz-glava .v32-h2 { margin-bottom: 10px; }
.bz-glava .v32-pod { color: var(--v32-siva); }

/* ---------- kategorije ---------- */
.bz-tabovi { display: flex; gap: 4px; padding: 6px; border-radius: 20px; width: max-content; max-width: 100%; margin: 0 auto 30px; overflow-x: auto; scrollbar-width: none; }
.bz-tabovi::-webkit-scrollbar { display: none; }
.bz-tabovi [role="tab"] { flex: 0 0 auto; display: inline-flex; align-items: center; gap: 11px; min-height: 52px; padding: 10px 24px 10px 18px; border: 0; border-radius: 15px; background: transparent;
  color: var(--v32-tinta); font: 600 16px/1.1 var(--v32-f); cursor: pointer; transition: background .25s var(--v32-ease), color .2s, box-shadow .25s; white-space: nowrap; }
.bz-tabovi [role="tab"] svg { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linejoin: round; stroke-linecap: round; }
.bz-tabovi [role="tab"]:hover { background: var(--v32-nagl-meko); }
.bz-tabovi [role="tab"][aria-selected="true"] { color: #fff; background: var(--v32-grad); box-shadow: 0 10px 24px -12px rgba(91, 79, 224, .9), inset 0 1px 0 rgba(255, 255, 255, .28); }
.bz-tabovi [role="tab"]:focus-visible { outline: none; box-shadow: var(--v32-fokus); }

/* ---------- raspored ---------- */
.bz-u { display: grid; grid-template-columns: minmax(300px, 352px) minmax(0, 1fr); grid-template-areas: "panel scena" "panel rez"; gap: 0 26px; align-items: start; }
.bz-panel { grid-area: panel; padding: 22px 22px 16px; border-radius: var(--v32-r-l); background: var(--v32-staklo-jako); position: relative; z-index: 2; }
.bz-scena { grid-area: scena; position: relative; height: clamp(440px, 44vw, 620px); margin-right: -12px; }
.bz-rez { grid-area: rez; position: relative; z-index: 2; margin-top: -78px; display: flex; align-items: center; gap: 16px; padding: 14px 16px 14px 22px; border-radius: var(--v32-r-l); background: var(--v32-staklo-jako); }

/* ---------- panel parametara ---------- */
.bz-p-naslov { margin: 0 0 6px; font: 800 22px/1.2 var(--v32-f); letter-spacing: -.02em; color: var(--v32-tinta); }
.bz-kl { padding: 9px 0 7px; }
.bz-kl label { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font: 500 15px/1.3 var(--v32-f); color: var(--v32-tekst); margin-bottom: 4px; }
.bz-raspon { font: 500 11.5px/1 var(--v32-f); color: var(--v32-siva); letter-spacing: .01em; }
.bz-kl-red { display: grid; grid-template-columns: minmax(0, 1fr) 104px; gap: 14px; align-items: center; }
.bz-kl input[type=range] { width: 100%; margin: 0; }
.bz-polje { position: relative; display: flex; align-items: center; height: 42px; border-radius: 11px; background: var(--v32-staklo-jako); box-shadow: inset 0 0 0 1px var(--v32-rub), 0 1px 2px rgba(20, 24, 60, .05); transition: box-shadow .2s; }
.bz-polje:focus-within { box-shadow: inset 0 0 0 1.5px var(--v32-nagl), var(--v32-fokus); }
.bz-polje input { width: 100%; min-width: 0; height: 100%; border: 0; background: transparent; padding: 0 30px 0 10px; text-align: right; font: 600 16px/1 var(--v32-f); color: var(--v32-tinta); font-variant-numeric: tabular-nums; outline: none; }
.bz-jed { position: absolute; right: 10px; font: 500 13px/1 var(--v32-f); color: var(--v32-siva); pointer-events: none; }
.bz-polje.neispravno { box-shadow: inset 0 0 0 1.5px #c62828; }
.bz-greska { margin: 5px 0 0; font: 500 12.5px/1.35 var(--v32-f); color: #b3261e; }
:root[data-tema="tamna"] .bz-greska { color: #ff9a8f; }
:root[data-tema="tamna"] .bz-polje.neispravno { box-shadow: inset 0 0 0 1.5px #ff8a80; }
.bz-grupa { padding-top: 12px; margin-top: 8px; border-top: 1px solid var(--v32-rub); }
.bz-grupa h4 { margin: 0 0 8px; font: 500 15px/1.3 var(--v32-f); color: var(--v32-tekst); }
.bz-cipovi { display: flex; flex-wrap: wrap; gap: 7px; }
.bz-mat .bz-cipovi { display: grid; grid-template-columns: 1fr 1fr; }
.bz-cip { display: inline-flex; align-items: center; gap: 9px; min-height: 40px; padding: 7px 13px; border-radius: 12px; border: 1px solid var(--v32-rub); background: var(--v32-staklo-jako); color: var(--v32-tinta);
  font: 500 14px/1.2 var(--v32-f); cursor: pointer; transition: border-color .2s, box-shadow .2s, background .2s; text-align: left; }
.bz-mat .bz-cip { min-height: 52px; padding: 7px 10px; }
.bz-cip-ik { flex: 0 0 auto; width: 30px; height: 30px; color: var(--v32-nagl); }
.bz-cip-ik svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.4; stroke-linejoin: round; }
.bz-cip-ik svg circle { fill: currentColor; stroke: none; }
.bz-cip:hover { border-color: var(--v32-nagl-rub); }
.bz-cip[aria-pressed="true"] { border-color: var(--v32-nagl); background: var(--v32-nagl-meko); box-shadow: inset 0 0 0 1px var(--v32-nagl), 0 6px 16px -10px rgba(91, 79, 224, .7); }
.bz-cip:focus-visible, .bz-det-b:focus-visible, .bz-otvori:focus-visible, .bz-alati button:focus-visible, .bz-dod summary:focus-visible, .bz-prek input:focus-visible + .bz-prek-k { outline: none; box-shadow: var(--v32-fokus); }
.bz-sitno .bz-cip { min-height: 36px; padding: 5px 12px; font-size: 13.5px; border-radius: 10px; }
.bz-dod { margin-top: 12px; border-top: 1px solid var(--v32-rub); }
.bz-dod summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 12px 0 4px; font: 600 14.5px/1.3 var(--v32-f); color: var(--v32-nagl); border-radius: 8px; }
.bz-dod summary::-webkit-details-marker { display: none; }
.bz-dod summary::after { content: ''; width: 9px; height: 9px; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg) translateY(-3px); transition: transform .25s var(--v32-ease); }
.bz-dod[open] summary::after { transform: rotate(-135deg) translate(-2px, -2px); }
.bz-dod-u { padding-bottom: 4px; }
.bz-dod-u .bz-grupa { border-top: 0; margin-top: 0; padding-top: 8px; }
.bz-prek { display: flex; align-items: center; gap: 11px; padding: 8px 0; font: 500 14px/1.35 var(--v32-f); color: var(--v32-tekst); cursor: pointer; position: relative; }
.bz-prek input { position: absolute; z-index: 1; opacity: 0; width: 40px; height: 24px; margin: 0; cursor: pointer; }
.bz-prek-k { flex: 0 0 auto; width: 40px; height: 24px; border-radius: 99px; background: rgba(32, 38, 80, .16); position: relative; transition: background .2s; }
.bz-prek-k::after { content: ''; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgba(20, 24, 60, .3); transition: transform .25s var(--v32-ease); }
.bz-prek input:checked + .bz-prek-k { background: var(--v32-nagl); }
.bz-prek input:checked + .bz-prek-k::after { transform: translateX(16px); }
.bz-ogr { margin: 10px 0 0; padding: 9px 11px; border-radius: 10px; background: #fff6e5; color: #6b4300; font: 500 12.5px/1.4 var(--v32-f); }
.bz-ogr:empty, .bz-ogr[hidden] { display: none; }
:root[data-tema="tamna"] .bz-ogr { background: rgba(255, 190, 90, .12); color: #ffd896; }

/* ---------- 3D scena (bez tamnog okvira — model stoji na svijetlom podu odjeljka) ---------- */
.bz-platno { position: absolute; inset: 0; }
.bz-platno canvas { display: block; width: 100%; height: 100%; cursor: grab; outline: none; border-radius: 18px;
  /* rubovi platna se pretapaju u podlogu odjeljka (nema okvira ni ruba poda) */
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 6%, #000 94%, transparent 100%), linear-gradient(180deg, transparent 0, #000 5%, #000 92%, transparent 100%);
  -webkit-mask-composite: source-in; mask-image: linear-gradient(90deg, transparent 0, #000 6%, #000 94%, transparent 100%), linear-gradient(180deg, transparent 0, #000 5%, #000 92%, transparent 100%); mask-composite: intersect; }
.bz-platno canvas:active { cursor: grabbing; }
.bz-platno canvas:focus-visible { box-shadow: inset 0 0 0 2px var(--v32-nagl-rub); }
.bz-poster { position: absolute; inset: 0 0 70px; width: 100%; height: calc(100% - 70px); object-fit: contain; }
.bz-status { position: absolute; left: 50%; top: 18px; transform: translateX(-50%); margin: 0; max-width: min(520px, 90%); padding: 8px 14px; border-radius: 12px; text-align: center;
  background: var(--v32-staklo-jako); box-shadow: var(--v32-sjena); font: 500 13px/1.4 var(--v32-f); color: var(--v32-tekst); }
.bz-ucitava { position: absolute; inset: 0; display: none; place-items: center; pointer-events: none; }
.bz-scena.ucitava .bz-ucitava { display: grid; }
.bz-ucitava span { width: 38px; height: 38px; border-radius: 50%; border: 3px solid var(--v32-nagl-meko); border-top-color: var(--v32-nagl); animation: bz-vrti 0.9s linear infinite; }
@keyframes bz-vrti { to { transform: rotate(360deg); } }
.bz-alati { position: absolute; top: 12px; right: 12px; z-index: 3; display: flex; align-items: stretch; gap: 2px; padding: 5px; border-radius: 16px; }
.bz-alati button { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; min-width: 58px; min-height: 52px; padding: 6px 8px; border: 0; border-radius: 11px; background: transparent;
  color: var(--v32-tekst); font: 500 11.5px/1 var(--v32-f); cursor: pointer; position: relative; transition: background .2s, color .2s; }
.bz-alati button svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; }
.bz-alati button:hover { background: var(--v32-nagl-meko); color: var(--v32-tinta); }
.bz-alati button[aria-pressed="true"] { color: var(--v32-nagl); font-weight: 700; }
.bz-alati button[aria-pressed="true"]::after { content: ''; position: absolute; left: 14px; right: 14px; bottom: 2px; height: 2.5px; border-radius: 2px; background: var(--v32-nagl); }
.bz-alati .bz-upitnik { min-width: 46px; }
.bz-alati .bz-upitnik > span[aria-hidden] { display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; border: 1.6px solid currentColor; font: 600 16px/1 var(--v32-f); }
.bz-alati button[hidden] { display: none; }
.bz-pomoc { position: absolute; z-index: 4; top: 78px; right: 12px; width: min(320px, calc(100% - 24px)); padding: 14px 16px 12px; border-radius: 16px; background: var(--v32-staklo-jako); }
.bz-pomoc h3 { margin: 0 0 8px; font: 700 15px/1.3 var(--v32-f); color: var(--v32-tinta); }
.bz-pomoc ul { margin: 0 0 10px; padding-left: 18px; font: 400 13.5px/1.5 var(--v32-f); color: var(--v32-tekst); }
.bz-pomoc-x { border: 1px solid var(--v32-rub); background: transparent; border-radius: 10px; padding: 7px 14px; font: 600 13px var(--v32-f); color: var(--v32-nagl); cursor: pointer; }
.bz-savjet { position: absolute; left: 50%; bottom: 96px; transform: translate(-50%, 8px); margin: 0; padding: 8px 16px; border-radius: 99px; background: rgba(16, 19, 58, .78); color: #fff;
  font: 500 13px/1.3 var(--v32-f); pointer-events: none; opacity: 0; transition: opacity .35s, transform .35s var(--v32-ease); white-space: nowrap; }
.bz-savjet.vidi { opacity: 1; transform: translate(-50%, 0); }

/* ---------- traka rezultata ---------- */
.bz-rez { container-type: inline-size; }
.bz-st { flex: 1 1 auto; min-width: 0; display: flex; align-items: center; }
@container (max-width: 860px) { .bz-st-ik { display: none; } .bz-st-s { padding: 4px 12px; } .bz-st-s b { font-size: 24px; } }
.bz-st-s { flex: 1 1 0; min-width: 0; display: flex; align-items: center; gap: 12px; padding: 4px 16px; border-left: 1px solid var(--v32-rub); }
.bz-st-s:first-child { border-left: 0; padding-left: 0; }
.bz-st-ik { flex: 0 0 auto; width: 38px; height: 38px; color: var(--v32-tinta); }
.bz-st-ik svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linejoin: round; stroke-linecap: round; }
.bz-st-s b { display: block; font: 800 27px/1.05 var(--v32-f); letter-spacing: -.02em; color: var(--v32-tinta); font-variant-numeric: tabular-nums; white-space: nowrap; }
.bz-st-s b small { font: 600 15px/1 var(--v32-f); letter-spacing: 0; }
.bz-st-o { display: block; font: 500 13px/1.3 var(--v32-f); color: var(--v32-siva); overflow: hidden; text-overflow: ellipsis; }
.bz-st-cek { padding: 12px 0; font: 500 14px var(--v32-f); color: var(--v32-siva); }
.bz-akcije { flex: 0 0 auto; display: flex; align-items: center; gap: 14px; padding-left: 16px; border-left: 1px solid var(--v32-rub); }
.bz-det-b { border: 0; background: transparent; padding: 8px 4px; font: 600 14px/1.2 var(--v32-f); color: var(--v32-nagl); text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; cursor: pointer; border-radius: 8px; white-space: nowrap; }
.bz-otvori { display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 0 24px; border-radius: 15px; background: var(--v32-grad); color: #fff; text-decoration: none; white-space: nowrap;
  font: 600 17px/1 var(--v32-f); box-shadow: 0 14px 28px -14px rgba(91, 79, 224, .95), inset 0 1px 0 rgba(255, 255, 255, .25); transition: transform .25s var(--v32-ease), box-shadow .25s; }
.bz-otvori:hover { transform: translateY(-1px); box-shadow: 0 18px 32px -14px rgba(91, 79, 224, 1), inset 0 1px 0 rgba(255, 255, 255, .25); }
.bz-ogledni { display: flex; align-items: center; gap: 9px; margin: 22px 0 0; font: 500 13.5px/1.4 var(--v32-f); color: var(--v32-siva); }
.bz-ogledni svg { flex: 0 0 auto; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; }

/* ---------- detalji izračuna ---------- */
.bz-dlg { width: min(760px, calc(100vw - 32px)); max-height: min(84vh, 900px); padding: 0; border: 0; border-radius: 22px; background: var(--v32-pod-2); color: var(--v32-tekst); box-shadow: var(--v32-sjena-jaka); font-family: var(--v32-f); }
.bz-dlg::backdrop { background: rgba(16, 19, 58, .35); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.bz-dlg-gl { position: sticky; top: 0; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px 12px; background: var(--v32-pod-2); border-bottom: 1px solid var(--v32-rub); }
.bz-dlg-gl h2 { margin: 0; font: 800 20px/1.2 var(--v32-f); color: var(--v32-tinta); }
.bz-dlg-x { width: 40px; height: 40px; border: 1px solid var(--v32-rub); border-radius: 12px; background: transparent; font: 400 24px/1 var(--v32-f); color: var(--v32-tinta); cursor: pointer; }
.bz-dlg-t { padding: 6px 20px 20px; }
.bz-dlg-t h3 { margin: 10px 0 4px; font: 700 16px/1.3 var(--v32-f); color: var(--v32-nagl); }
.bz-tbl { width: 100%; border-collapse: collapse; margin: 10px 0 6px; font: 400 14px/1.4 var(--v32-f); }
.bz-tbl caption { text-align: left; font: 700 12px/1.3 var(--v32-f); letter-spacing: .06em; text-transform: uppercase; color: var(--v32-siva); padding: 8px 0 6px; }
.bz-tbl th, .bz-tbl td { padding: 7px 8px; border-bottom: 1px solid var(--v32-rub); text-align: left; vertical-align: top; }
.bz-tbl tbody th { font-weight: 500; color: var(--v32-tekst); width: 42%; }
.bz-tbl td { color: var(--v32-tinta); font-weight: 600; }
.bz-tbl td small { display: block; font-weight: 400; font-size: 12.5px; color: var(--v32-siva); }
.bz-tbl thead th { font-size: 12px; color: var(--v32-siva); font-weight: 600; }
.bz-tbl .br { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.bz-tbl-m td:first-child { font-weight: 500; color: var(--v32-tekst); }
.bz-nap { margin: 10px 0 0; font: 400 13px/1.5 var(--v32-f); color: var(--v32-siva); }

/* tamna tema: isti raspored, stakla tamna */
:root[data-tema="tamna"] .bz-cip, :root[data-tema="tamna"] .bz-polje { background: rgba(255, 255, 255, .04); }
:root[data-tema="tamna"] .bz-prek-k { background: rgba(255, 255, 255, .18); }
:root[data-tema="tamna"] .bz-savjet { background: rgba(255, 255, 255, .88); color: #10133a; }

/* ---------- tablet i mobitel: parametri → model → rezultati ---------- */
@media (max-width: 980px) {
  .bz-u { grid-template-columns: minmax(0, 1fr); grid-template-areas: "panel" "scena" "rez"; }
  .bz-scena { height: clamp(320px, 62vw, 520px); margin: 10px -12px 0; }
  .bz-rez { margin-top: -54px; }
  .bz-mat .bz-cipovi { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 720px) {
  .bz { padding: 72px 0 60px; }
  .bz-tabovi { width: auto; display: grid; grid-template-columns: 1fr 1fr; margin-left: -4px; margin-right: -4px; border-radius: 16px; overflow: visible; }
  .bz-tabovi [role="tab"] { justify-content: flex-start; white-space: normal; text-align: left; }
  .bz-tabovi [role="tab"] { min-height: 46px; padding: 8px 14px 8px 11px; font-size: 14.5px; gap: 8px; }
  .bz-tabovi [role="tab"] svg { width: 22px; height: 22px; }
  .bz-panel { padding: 16px 14px 12px; }
  .bz-mat .bz-cipovi { grid-template-columns: 1fr 1fr; }
  .bz-scena { height: 340px; margin: 8px -16px 0; }
  .bz-rez { flex-direction: column; align-items: stretch; gap: 10px; margin-top: -40px; padding: 12px; }
  .bz-st { flex-wrap: wrap; }
  .bz-st-s { flex: 1 1 30%; flex-direction: column; align-items: flex-start; gap: 4px; padding: 2px 8px; }
  .bz-st-ik { width: 26px; height: 26px; }
  .bz-st-s b { font-size: 21px; }
  .bz-st-o { font-size: 12px; white-space: normal; }
  .bz-akcije { padding: 10px 0 0; border-left: 0; border-top: 1px solid var(--v32-rub); justify-content: space-between; }
  .bz-otvori { min-height: 48px; padding: 0 18px; font-size: 15.5px; }
  .bz-alati { top: 8px; right: 8px; padding: 3px; gap: 0; }
  .bz-alati button { min-width: 46px; min-height: 46px; padding: 4px; font-size: 10.5px; }
  .bz-alati button svg { width: 19px; height: 19px; }
  .bz-alati .bz-upitnik > span[aria-hidden] { width: 26px; height: 26px; }
  .bz-pomoc { top: 64px; }
  .bz-savjet { bottom: 64px; white-space: normal; text-align: center; max-width: 86%; }
}
@media (max-width: 400px) {
  .bz-alati button[data-pogled] span { display: none; }
  .bz-alati button { min-width: 42px; }
}
@media (prefers-reduced-motion: reduce) {
  .bz-tabovi [role="tab"], .bz-cip, .bz-otvori, .bz-savjet, .bz-prek-k::after, .bz-dod summary::after { transition: none; }
  .bz-ucitava span { animation-duration: 3s; }
}

/* v34 (3d34): zamjenska slika samo kad uređaj stvarno ne može 3D — jasno označena, bez kontrola koje ne bi radile */
.bz-scena.bez3d .bz-alati button[data-pogled], .bz-scena.bez3d .bz-alati button[data-a="slojevi"], .bz-scena.bez3d .bz-savjet, .bz-scena.bez3d .bz-pomoc { display: none !important; }
.bz-scena.bez3d .bz-poster { cursor: default; filter: saturate(.92); }
.bz-scena.bez3d .bz-status { max-width: min(560px, 92%); font-weight: 500; }
/* prekidač koji trenutno ne može vrijediti (npr. vrata u preuskoj prostoriji) */
.bz-prek.bz-ne-stane { opacity: .55; cursor: not-allowed; }
/* polje koje prikazuje stvarnu vrijednost modela jer tražena ne stane (poruka iznad kaže zašto) */
.bz-polje.bz-ograniceno input[data-n] { color: #9a5b00; }
:root[data-tema="tamna"] .bz-polje.bz-ograniceno input[data-n] { color: #ffd38a; }