/* Geometria v2.6 — layout personalizzato e canvas 3D dei solidi */
.layout.ss-layout{grid-template-columns:minmax(0,345px) minmax(0,1fr);gap:18px;align-items:start}
.ss-sidebar,.ss-content{display:grid;gap:18px;min-width:0;align-content:start}
.ss-sidebar>.panel{padding:18px 16px;min-width:0}
.ss-content>.panel{min-width:0}
.ss-main-select{margin-bottom:14px}
.ss-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.ss-field{display:grid;gap:5px;color:#31587a;font-size:.87rem;font-weight:750;min-width:0}
.ss-field input,.ss-field select{display:block;width:100%;min-width:0;border:1px solid #b4c9de;border-radius:8px;padding:10px 9px;color:#193e68;background:#fff;font-size:.99rem}
.ss-field select{background:#f5f9fe}
.ss-field[data-ss-for][hidden]{display:none!important}
.ss-field input:focus,.ss-field select:focus{outline:2px solid #6eaddb;outline-offset:1px}
.ss-slider-label{margin-top:18px;margin-bottom:14px}
.ss-slider-label input{padding:2px 0;accent-color:#238b82;cursor:pointer;border:0}
.ss-slider-label output{font-variant-numeric:tabular-nums;color:#19675b}
.ss-examples{margin-top:15px;display:flex;flex-wrap:wrap;gap:7px}
.ss-examples span{flex-basis:100%;font-weight:750;color:#345a80;font-size:.85rem}
.ss-examples button{border:0;border-bottom:1px solid #4380b8;padding:3px 1px;background:transparent;color:#2868a8;font-size:.83rem;text-align:left;cursor:pointer}
.ss-examples button:hover,.ss-examples button:focus{color:#0c4177;text-decoration:underline}
.ss-examples button[aria-current="true"]{font-weight:800;color:#184d7a}
.ss-graph{scroll-margin-top:55px}
.ss-checks{margin:12px 0 10px;display:flex;gap:9px 14px;flex-wrap:wrap}
.ss-description{border-left-color:#168f78;margin:9px 0 12px}
.ss-description span{display:block}
.ss-canvas-wrap{background:#fff;border:1px solid #dae5f0;border-radius:12px;overflow:hidden}
#ss-canvas{display:block;width:100%;height:auto;aspect-ratio:960/650;touch-action:none;cursor:grab;outline-offset:-3px}
#ss-canvas:active{cursor:grabbing}
#ss-canvas:focus-visible{outline:3px solid #397abb}
.ss-legend{margin-top:8px;display:flex;flex-wrap:wrap;gap:12px}
.ss-explain p{font-size:.89rem;color:#45617c;line-height:1.65;margin:9px 0}
.ss-explain b{color:#1c4d7a}
.ss-table{border-collapse:collapse;width:100%;font-size:.89rem}
.ss-table th,.ss-table td{padding:9px 5px;border-bottom:1px solid #e1eaf3;vertical-align:top}
.ss-table th{font-weight:600;text-align:left;color:#4d637e;width:58%}
.ss-table td{font-weight:760;color:#1c4e7c;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.ss-table tr.ss-table-heading th{padding-top:16px;color:#19446c;font-weight:850}
.ss-table tr.ss-table-heading:first-child th{padding-top:0}
.ss-step{padding:12px 0;border-bottom:1px solid #e6edf5}
.ss-step:first-child{padding-top:0}
.ss-step:last-child{border-bottom:0}
.ss-step h3{font-size:1rem;margin:3px 0;color:#1a4a7b}
.ss-step p{font-size:.86rem;line-height:1.6;color:#566e86;margin:8px 0}
.ss-math{background:#f3f7fd;border-radius:8px;padding:10px 11px;margin:7px 0;overflow-x:auto;overflow-y:hidden;max-width:100%;font-size:.90rem}
.ss-math mjx-container{margin:0!important;text-align:left!important;max-width:100%}
.ss-theory{margin-top:18px}
.ss-theory-columns{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:17px}
.ss-theory-columns h3{color:#184d7e;font-size:.92rem;margin:4px 0}
.ss-theory-columns p{color:#536d83;font-size:.84rem;line-height:1.6}
.ss-graph .g3-camera-controls button{cursor:pointer}
@media(max-width:920px){.layout.ss-layout{grid-template-columns:minmax(0,1fr)}.ss-sidebar>.panel{padding:20px}.ss-fields{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:640px){.ss-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.ss-theory-columns{grid-template-columns:1fr}.ss-sidebar>.panel{padding:16px}}
@media(max-width:350px){.ss-fields{grid-template-columns:1fr}.g3-view-presets button{padding:7px 6px;font-size:.76rem}}
/* v2.7: piani inclinati e coniche */
.ss-plane-panel{border-top:1px solid #e2e9f1;padding-top:14px;margin-top:16px;display:grid;gap:10px}
.ss-oblique-controls{display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr));min-width:0}
.ss-oblique-controls[hidden]{display:none!important}
.ss-cone-extension,.ss-oblique-help{grid-column:1/-1}
.ss-cone-extension{display:flex;gap:8px;align-items:flex-start;font-weight:670;font-size:.86rem;color:#284f76;line-height:1.35}
.ss-cone-extension[hidden]{display:none!important}
.ss-cone-extension input{margin:2px 0 0;accent-color:#216ca8;flex:0 0 auto}
.ss-oblique-help{font-size:.81rem;line-height:1.5;color:#577189;background:#eff5fb;border-radius:7px;padding:9px 10px;margin:0}
.ss-plane-hint{font-size:.85rem;color:#526f87}
@media(max-width:400px){.ss-oblique-controls{grid-template-columns:1fr}}

/* v2.8: esempi raggruppati e lettura facilitata delle sezioni. */
.ss-examples .ss-examples-heading{flex-basis:100%;font-size:.83rem;letter-spacing:.01em;color:#274e74;margin-top:8px;margin-bottom:2px;padding-top:5px;border-top:1px solid #e1eaf2}
.ss-examples .ss-examples-heading:first-child{border-top:0;margin-top:0}
.ss-graph .construction-info{line-height:1.65}
@media (max-width:640px){.ss-examples{gap:8px 11px}}

/* Geometria v2.9: controlli per i prismi obliqui e animazione di Cavalieri. */
.ss-shear-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;grid-column:1/-1;min-width:0}
.ss-shear-fields[hidden],.ss-shear-panel[hidden]{display:none!important}
.ss-shear-panel{margin:10px 0 14px;padding:12px;border:1px solid #bedbcf;border-radius:9px;background:#f0faf6;min-width:0}
.ss-shear-title{display:flex;justify-content:space-between;gap:8px;align-items:center;color:#125f4b;font-size:12px;margin-bottom:9px}
.ss-shear-panel input[type=range]{display:block;width:100%;accent-color:#16886f;margin:9px 0 5px}
.ss-shear-panel label{font-size:11px;line-height:1.4}
.ss-shear-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.ss-shear-actions button{font-size:11px;padding:7px 10px}
.ss-shear-actions button:disabled{opacity:.45;cursor:not-allowed}
.ss-shear-help{font-size:11px;line-height:1.5;color:#41615c;margin:9px 0 0}
@media(max-width:420px){.ss-shear-fields{grid-template-columns:1fr}.ss-shear-actions button{flex:1 1 auto}}

/* Keep the animated 3D construction visible below the sticky site header. */
.ss-graph{scroll-margin-top:64px}