/* V8.1: quattro aree tecniche, solo un pannello visibile alla volta */
.v81-nav{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:7px;margin:14px 0;padding:8px;background:#eaf1f6;border:1px solid #cadce9;border-radius:12px}
.v81-tab{padding:12px 7px;border-radius:9px;border:1px solid #c2d4df;background:white;color:#24455d;font:inherit;font-size:.91rem;font-weight:750;cursor:pointer}.v81-tab.active{background:#12344f;color:#fff;border-color:#12344f}.v81-tab:focus-visible{outline:3px solid #a0dc5a;outline-offset:2px}
.v81-pane[hidden]{display:none!important}.v81-pane{min-width:0}.v81-pane>*{margin-bottom:14px}.v81-pane .v42-col{max-width:100%}
@media(max-width:700px){.v81-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.v81-tab{font-size:.83rem;padding:10px 4px}}@media print{.v81-nav{display:none!important}.v81-pane[hidden]{display:block!important}}

.v821-cut-details{margin:12px 0;padding:10px 14px;border:1px solid #d2dfe7;border-radius:9px}.v821-cut-details summary{cursor:pointer;font-weight:700}.v821-cut-details .v73-cut{border:0;padding:8px 0;margin:5px 0}.v821-loss-indicator{padding:12px;background:#f0f6fa;border-radius:8px}

/* V8.3 */
.v83-boards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin:16px 0}.v83-board{display:flex;flex-direction:column;gap:8px;background:#f8fafc;border:1px solid #d5e2ea;border-radius:8px;padding:12px}.v83-board svg{display:block;width:100%;height:270px}.v83-board small{overflow-wrap:anywhere}.v83-choice{display:block;padding:12px;border:1px solid #b9d3e2;border-radius:8px;margin:12px 0}.v83-choice input{margin-right:8px}

/* V8.4 - vista principale unica con strumenti tecnici espandibili */
.v84-unified-summary{border:1px solid #abc6d8;background:#f2f7fb;border-radius:12px;padding:16px;margin:14px 0;color:#1f3747}
.v84-unified-summary h4{margin:0 0 12px;font-size:1.06rem}
.v84-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:10px}
.v84-grid>div{display:flex;flex-direction:column;gap:4px;background:white;border:1px solid #dce5eb;border-radius:8px;padding:10px}
.v84-grid small{color:#526778}.v84-grid b{overflow-wrap:anywhere}
.v84-unified-summary p{margin:10px 0 5px}
.v84-advanced{margin:18px 0;border:1px solid #bdccd6;border-radius:10px;padding:12px}
.v84-advanced>summary{cursor:pointer;font-weight:700;color:#23445c;padding:8px}
.v84-advanced>.v74-purchase{margin-top:12px}
@media print{.v84-advanced{display:block!important}}

/* V8.5: percorso semplice in cinque fasi. */
.v81-nav{grid-template-columns:repeat(5,minmax(0,1fr));position:sticky;top:0;z-index:5}
.v85-guide{padding:18px;border-radius:12px;border:1px solid #cbdce6;background:#f6fafc}
.v85-guide h3{margin-top:0}.v85-warning{background:#fff8eb;color:#69451a;border-left:4px solid #d79d43;padding:10px 12px;border-radius:5px}
.v85-main-summary .v84-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.v84-advanced{margin-top:16px}
@media(max-width:800px){.v81-nav{grid-template-columns:repeat(2,minmax(0,1fr));position:static}.v85-main-summary .v84-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}