:root{color-scheme:dark;--bg:#101d24;--panel:#182e39;--line:#4a6572;--ice:#d0f3fc;--muted:#a9c0ca}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:#f4fafb;font-family:Arial,sans-serif}a{color:inherit;text-decoration:none}header{max-width:1440px;margin:auto;padding:28px 4%;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);gap:20px}.brand{font-size:30px;font-weight:800;letter-spacing:-1px}.brand span{display:block;font-size:9px;letter-spacing:2px;margin-top:8px;font-weight:400}main{max-width:1440px;margin:auto;padding:40px 4% 90px}.intro{max-width:780px;margin-bottom:38px}.eyebrow,.visual-top{font-size:11px;letter-spacing:2px;color:var(--ice)}h1{font-size:clamp(36px,4vw,62px);line-height:1.04;letter-spacing:-2px;margin:17px 0}.intro>p:last-child{max-width:590px;line-height:1.7;color:var(--muted)}.workspace{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,1fr);gap:40px;align-items:start}.visual{position:sticky;top:20px;background:#edf3f4;color:#142e3b;border-radius:10px;overflow:hidden}.visual-top{display:flex;justify-content:space-between;padding:22px;background:#213b48;color:white}.visual #assembly{position:relative;aspect-ratio:1;background:white;overflow:hidden}.layer{position:absolute;pointer-events:none}.caption{font-size:12px;line-height:1.5;margin:16px 22px;color:#526873}#assembly-details{padding:0 22px;display:grid;grid-template-columns:1fr 1fr;gap:12px}.part-summary{background:white;border:1px solid #cad8de;padding:12px;border-radius:5px;font-size:12px;line-height:1.5}.part-summary strong{display:block;font-size:16px;margin-bottom:7px}.part-summary img{width:70px;height:65px;object-fit:contain;vertical-align:middle}.quote{margin:20px 22px;border-top:1px solid #bacdd5;padding-top:20px;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px}.quote strong{font-size:22px;white-space:nowrap}h2{font-size:23px;margin:0 0 14px}h2 span{color:#7dabbf;font-size:14px;margin-right:10px}.controls>p,.hint{color:var(--muted);font-size:13px;line-height:1.5}button,input{font:inherit}button{cursor:pointer;color:inherit;border:1px solid var(--line);background:transparent;border-radius:6px;padding:12px}button:hover{border-color:var(--ice)}button:focus-visible,a:focus-visible{outline:3px solid #83d9f4;outline-offset:3px}button[aria-pressed=true]{background:var(--ice);color:#102b38;border-color:var(--ice)}.diameters,.head-tabs{display:flex;gap:8px}.diameters button{flex:1;padding:14px 0}.length-label{display:flex;justify-content:space-between;margin:24px 0 10px;font-size:14px}.length-label span{color:var(--muted)}input{width:100%;padding:16px;background:#0b161d;border:1px solid var(--line);border-radius:6px;color:white;font-size:23px}.hint{margin-bottom:32px}.head-tabs button{flex:1;font-weight:700;font-size:18px}.option-group{margin:24px 0}.option-group h3{font-size:17px;margin:0 0 12px}.swatches{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.swatch{background:var(--panel);border:1px solid var(--line);border-radius:6px;overflow:hidden;position:relative}.swatch.selected{border:2px solid var(--ice)}.swatch button.pick{width:100%;height:100%;border:0;padding:9px;border-radius:0;display:flex;flex-direction:column;text-align:left;gap:10px}.pick img{width:100%;height:90px;object-fit:contain;background:white;border-radius:3px}.pick span{font-size:12px;line-height:1.4}.pick .empty{height:90px;display:grid;place-items:center;font-size:26px;background:#12242c;width:100%;border-radius:3px}.swatch .enlarge{position:absolute;top:12px;right:12px;background:white;color:#102b38;padding:3px 6px;font-size:14px;border:1px solid #a7bbc5}.selected .pick:after{content:'✓ Selezionato';font-size:10px;color:var(--ice)}#notice{min-height:18px;font-size:12px;color:var(--ice)}.summary{border-top:1px solid var(--line);margin-top:28px;padding-top:24px}.summary>div{display:flex;justify-content:space-between;align-items:center}.summary strong{font-size:30px}.summary p{font-size:12px;line-height:1.6;color:var(--muted)}button.primary{background:var(--ice);color:#102b38;width:100%;font-weight:700;font-size:16px;padding:18px;margin-top:12px}#errors{color:#ffc1b9;white-space:pre-line}dialog{background:white;color:#102b38;max-width:90vw;max-height:90vh;border:0;border-radius:8px}dialog::backdrop{background:#000b}dialog img{display:block;max-height:70vh;max-width:78vw;object-fit:contain}dialog button{color:#102b38;float:right}dialog p{max-width:650px;font-size:14px} @media(max-width:850px){.workspace{grid-template-columns:1fr;gap:32px}.visual{position:static}.intro{margin-bottom:24px}header{padding:22px 5%}header>a:last-child{font-size:12px}main{padding:28px 5% 60px}.visual #assembly{max-height:460px;aspect-ratio:1;width:100%;max-width:460px;margin:auto}.visual{background:#edf3f4}.swatches{grid-template-columns:repeat(3,minmax(0,1fr))}}@media print{header,.controls,.intro{display:none}.workspace{display:block}.visual{position:static;max-width:680px;margin:auto}}

@media(min-width:851px){.visual{max-height:calc(100vh - 40px);overflow:auto}}.selected .pick:after{color:#315765}