:root{color-scheme:dark;--bg:#091621;--panel:#112330;--line:#2b4658;--text:#edf5fa;--muted:#b0c3d1;--accent:#a1e0cc;--blue:#75c8fa;--red:#ffa9a9;--amber:#f1cc83}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 Inter,Arial,sans-serif}main{max-width:1520px;margin:auto;padding:32px 30px}h1,h2,h3,p{margin:0}h1{font-size:32px;letter-spacing:-.8px;display:flex;align-items:center;gap:14px;flex-wrap:wrap}h2{font-size:18px}h3{font-size:16px}.eyebrow{font-size:12px;letter-spacing:2px;color:var(--accent);margin-bottom:7px}.page-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:28px}.page-heading p:not(.eyebrow){color:var(--muted);margin-top:7px}.beta{font-size:12px;border:1px solid var(--line);border-radius:4px;padding:3px 8px;color:var(--muted);letter-spacing:0;font-weight:500}.actions{display:flex;gap:8px;flex-wrap:wrap}button{font:600 14px/1.35 inherit;font-family:inherit;font-size:14px;line-height:1.35;border:1px solid #496477;background:#183143;color:var(--text);padding:10px 13px;border-radius:6px;cursor:pointer;min-height:40px}button:hover{background:#25485e}.primary{background:var(--accent);color:#0b2b24;border-color:var(--accent);font-weight:700}.primary:hover{background:#bbeddf}button:disabled{opacity:.5;cursor:not-allowed}a{color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.workspace{display:grid;grid-template-columns:340px minmax(0,1fr);gap:24px;align-items:start}form{border:1px solid var(--line);border-radius:10px;background:var(--panel);padding:22px}fieldset{border:0;border-top:1px solid var(--line);margin:22px 0 0;padding:18px 0 0;min-width:0}legend{padding:0 10px 0 0;font-size:15px;font-weight:700;color:var(--accent)}label{display:block;font-size:14px;color:var(--muted);margin:0 0 14px}input,select{display:block;width:100%;margin-top:6px;border:1px solid #466073;border-radius:5px;background:#0a1b28;color:var(--text);padding:11px 10px;font:16px/1.3 inherit;font-size:16px;font-family:inherit;min-height:44px}select{padding-right:23px}.pair{display:grid;grid-template-columns:1fr 1fr;gap:12px}.check{display:flex;align-items:center;gap:10px}.check input{width:18px;min-height:18px;height:18px;margin:0;accent-color:var(--accent)}.hint{font-size:13px;color:var(--muted);margin:3px 0 14px;line-height:1.6}.section-title{display:flex;align-items:center;gap:10px;margin-bottom:18px;flex-wrap:wrap}.section-title>span:first-child{font-size:12px;color:var(--accent);border:1px solid #456e66;padding:2px 5px;border-radius:3px}.section-title button,.section-title .small{margin-left:auto}.small{color:var(--muted);font-size:13px}.results{min-width:0}.panel{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:24px;margin-bottom:20px}.summary-bar{display:grid;grid-template-columns:1.5fr repeat(3,1fr);border:1px solid var(--line);border-radius:10px;background:#132c3b;margin-bottom:20px;overflow:hidden}.stat{padding:17px;border-left:1px solid var(--line)}.stat:first-child{border:0}.stat strong{font-size:26px;font-weight:600;display:block}.stat span{font-size:13px;color:var(--muted)}.stat.status strong{font-size:16px;color:var(--amber)}.stat.status.blocked strong{color:var(--red)}.flow-row{display:grid;grid-template-columns:1fr 32px 1fr 32px 1fr;align-items:stretch;margin:10px 0}.node{min-width:0;border:1px solid #41667c;border-top:3px solid var(--blue);border-radius:6px;background:#0b1c29;padding:15px}.node.audio{border-top-color:var(--accent)}.node.control{border-top-color:#b5afff}.node strong{font-size:15px;display:block;overflow-wrap:anywhere}.node small{font-size:13px;color:var(--muted);display:block;margin-top:6px}.arrow{display:flex;align-items:center;justify-content:center;color:var(--blue)}.flow-label{font-size:12px;letter-spacing:1px;color:var(--muted);margin-top:18px}.path-note{font-size:13px;color:var(--amber);margin-top:10px;padding:10px 12px;background:#27281f;border-left:2px solid var(--amber)}.zone{display:grid;grid-template-columns:minmax(100px,1.4fr) 80px 80px 115px 36px;gap:10px;align-items:end;border-bottom:1px solid var(--line);padding:10px 0}.zone label{margin:0;font-size:12px}.zone input{padding:9px 8px}.zone .load{align-self:center;padding-top:20px;font-size:14px}.zone .load small{display:block;color:var(--muted);font-size:12px}.zone .remove{padding:5px;min-height:42px}.zone-total{padding-top:15px;color:var(--accent);font-size:14px}.over{color:var(--red)}.issue{border-left:3px solid var(--amber);background:#1c2c34;padding:13px 16px;margin-top:10px}.issue.block{border-color:var(--red);background:#33282d}.issue .severity{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--amber);margin-bottom:4px}.issue.block .severity{color:var(--red)}.issue p{font-size:14px;color:#d0dde6;margin-top:5px}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;color:var(--muted);font-weight:500;font-size:12px;text-transform:uppercase;letter-spacing:.7px}td,th{padding:13px 10px;border-bottom:1px solid var(--line);vertical-align:top}td:first-child{color:var(--accent);font-weight:700}td:nth-child(2){min-width:150px}td:last-child{color:var(--muted)}.network-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:18px}.network-grid>div{padding:15px;background:#0a1b28;border:1px solid var(--line);border-radius:6px}.network-grid strong{display:block;font-size:23px}.network-grid span{font-size:13px;color:var(--muted)}.network-notes{font-size:14px;color:var(--muted);padding-left:20px}.network-notes li{margin:8px 0}details summary{cursor:pointer;font-weight:600;font-size:14px;color:var(--accent)}details[open]>summary{margin-bottom:18px}.references{font-size:14px;color:var(--muted)}.source-links{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:20px}footer{font-size:13px;color:var(--muted);padding:12px 0 24px}#feedback:not(:empty){border:1px solid var(--amber);background:#2c2b20;padding:14px;margin-bottom:18px;border-radius:6px}[hidden]{display:none!important}.invalid #resultBody{opacity:.4;pointer-events:none}.print-project{display:none}

@media(max-width:1150px){.workspace{grid-template-columns:300px minmax(0,1fr);gap:16px}main{padding:24px 18px}.page-heading{align-items:start;flex-direction:column}.panel{padding:18px}.zone{grid-template-columns:minmax(80px,1fr) 65px 65px 36px}.zone .load{grid-column:1/4;padding:0}.zone .remove{grid-column:4;grid-row:1}.zone .load small{display:inline;margin-left:8px}.summary-bar{grid-template-columns:repeat(2,1fr)}.stat:nth-child(3){border-left:0;border-top:1px solid var(--line)}.stat:nth-child(4){border-top:1px solid var(--line)}}

@media(max-width:760px){.workspace{grid-template-columns:1fr}main{padding:24px 14px}h1{font-size:28px}form{padding:20px}.panel{padding:18px}.flow-row{grid-template-columns:1fr}.arrow{min-height:25px;transform:rotate(90deg)}.network-grid{grid-template-columns:1fr}.section-title .small{margin-left:0}.page-heading{margin-bottom:20px}.zone{grid-template-columns:minmax(80px,1fr) 67px 67px 34px}.actions button{flex:1}.actions{width:100%}}

@media print{color-scheme:light;body{background:white;color:#142737;font-size:11px}.lvd-site-header,.actions,#configuration,button,footer,#feedback{display:none!important}main{max-width:none;padding:0}.workspace{display:block}.page-heading{margin-bottom:18px}.page-heading p{color:#333!important}.page-heading h1{font-size:24px}.print-project{display:block;font-weight:700}.panel,.summary-bar{background:white;border-color:#aaa;break-inside:avoid}.stat strong,.stat span,.hint,.small,td,th,.node small,.references,.flow-label,.network-notes,.network-grid span{color:#333!important}.node,.network-grid>div{background:#fafafa;color:#111}.issue,.issue.block{background:#fafafa;color:#111;border:1px solid #bbb}.issue p{color:#222}.issue .severity{color:#333!important}.zone input{color:#111;background:white;border-color:#bbb}.zone label{color:#333}.zone .load small{color:#333}a{color:#145369}.results{opacity:1!important}.source-links{font-size:10px}.network-grid{grid-template-columns:repeat(3,1fr)}.flow-row{grid-template-columns:1fr 24px 1fr 24px 1fr}.arrow{transform:none}.panel{margin-bottom:12px;padding:15px}.summary-bar{grid-template-columns:1.5fr repeat(3,1fr)}table{font-size:11px}.invalid #resultBody{display:none}}



.room{display:grid;grid-template-columns:1.4fr 85px 1fr;gap:12px;border-bottom:1px solid var(--line);padding:8px 0}.room label{margin:0 0 10px}.room-count{display:flex;align-items:center;gap:10px;margin:0 0 0 auto}.room-count input{width:72px;margin:0}.room-panel{border-top:3px solid var(--accent)}input[readonly]{color:var(--accent);border-style:dashed}@media(max-width:760px){.room{grid-template-columns:1fr 75px}.room label:last-child{grid-column:1/-1}.room-count{margin-left:0}}@media print{.room input,.room select{background:white;color:#111;border-color:#ccc}.room label{color:#222}.room{grid-template-columns:1.4fr 85px 1fr}.room label:last-child{grid-column:auto}.room-count{display:none}.room-panel{break-inside:auto}}



.rack-actions{display:flex;align-items:center;gap:15px;flex-wrap:wrap;margin:16px 0}.rack-actions span{font-size:14px;color:var(--accent)}.rack-drawing{overflow:auto;max-height:600px;border:1px solid var(--line);padding:8px;border-radius:6px;background:#0d202c}.rack-drawing svg{display:block;max-width:100%;height:auto}.prebuild-note{border-left:3px solid var(--accent);padding:12px 16px;background:#19352f;font-size:14px}.prebuild-note p{margin-top:5px}@media print{.rack-drawing{max-height:none;overflow:visible}.rack-drawing svg{max-height:700px}.prebuild-note{background:white;color:#111}}



dialog{color:var(--text);background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:26px;max-width:580px;width:calc(100% - 32px);max-height:90vh;overflow:auto}dialog::backdrop{background:#020910c9}dialog form{padding:16px 0;border:0}dialog p{margin:12px 0}textarea{display:block;width:100%;margin-top:6px;padding:10px;border:1px solid #466073;border-radius:5px;background:#0a1b28;color:var(--text);font:16px/1.4 Arial}#dealerLogin button{margin:14px}#poResult{color:var(--amber)}@media print{dialog{display:none!important}}



/* Guided build */

.build-steps{display:grid;grid-template-columns:repeat(7,1fr);gap:8px;margin-bottom:24px}.build-steps button{background:#112330;border-color:#2b4658;display:flex;gap:9px;align-items:center;justify-content:center;padding:13px 8px}.build-steps button span{font-size:12px;border:1px solid #557789;border-radius:50%;height:23px;width:23px;display:grid;place-items:center}.build-steps button[aria-current=step]{background:#a1e0cc;color:#082a22;border-color:#a1e0cc;font-weight:bold}.build-steps button.visited{border-color:#5b9d8b}.workspace{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr)}.step-heading{margin-bottom:24px;scroll-margin-top:155px}.step-heading h2{font-size:28px}.step-heading>p:last-child{color:var(--muted);margin-top:8px}.build-step fieldset{border:0;margin:0 0 20px;padding:0}.build-step fieldset legend{font-size:17px;margin-bottom:16px}.build-step .room-panel,.build-step #zones{margin-top:18px}.build-step .panel{padding:0;border:0;background:none}.build-step .section-title>span:first-child{display:none}.build-step .room{grid-template-columns:minmax(120px,1fr) 85px minmax(120px,1fr)}.step-controls{display:flex;gap:12px;align-items:center;margin-top:28px;padding-top:20px;border-top:1px solid var(--line)}#stepPosition{margin-left:auto;color:var(--muted);font-size:13px}.choice-guide{margin-top:22px;padding:16px;background:#18322e;border-left:3px solid var(--accent);font-size:14px;line-height:1.65}#choiceChanges:empty{display:none}#choiceChanges{margin-top:16px;padding:14px;border:1px solid #896d38;background:#29291e;color:#ffe1a3;font-size:14px}#choiceChanges ul{padding-left:18px;margin:8px 0}.live-build{border-top:3px solid var(--accent)}#liveBuild h3{font-size:21px;margin-bottom:12px}#liveBuild dl{margin:0}#liveBuild dl>div{display:flex;justify-content:space-between;gap:18px;border-bottom:1px solid var(--line);padding:11px 0;font-size:14px}#liveBuild dt{color:var(--muted)}#liveBuild dd{margin:0;text-align:right}#liveStatus{font-size:13px;color:var(--amber);margin-top:15px}.results #diagram .flow-row{grid-template-columns:1fr}.results #diagram .arrow{transform:rotate(90deg);min-height:24px}.results #diagram .node{padding:12px}.results #diagram .flow-label{margin-top:14px}.review-intro p{margin:14px 0;color:var(--muted)}body[data-build-step="6"] .workspace{grid-template-columns:minmax(260px,.6fr) minmax(0,1.4fr)}

@media(max-width:1000px){.build-steps{grid-template-columns:repeat(4,1fr)}.workspace,body[data-build-step="6"] .workspace{grid-template-columns:1fr}.step-heading{scroll-margin-top:95px}.results #diagram .flow-row{grid-template-columns:1fr 24px 1fr 24px 1fr}.results #diagram .arrow{transform:none}}

@media(max-width:600px){.build-steps{grid-template-columns:repeat(2,1fr)}.build-steps button{justify-content:flex-start}.build-step .room{grid-template-columns:1fr 75px}.build-step .room label:last-child{grid-column:1/-1}.results #diagram .flow-row{grid-template-columns:1fr}.results #diagram .arrow{transform:rotate(90deg)}.step-controls{flex-wrap:wrap}#nextStep{flex:1}.step-heading h2{font-size:25px}}

@media print{.build-steps,.step-controls,.step-heading,.choice-guide,#choiceChanges,.live-build{display:none!important}#configuration{display:block!important;background:white;border:0;padding:0}#configuration>label,#configuration .build-step{display:none!important}#configuration .build-step[data-build-step="0"],#configuration .build-step[data-build-step="3"]{display:block!important}#configuration fieldset{display:none!important}.results section[hidden],.results details[hidden],#summary[hidden]{display:block!important}#summary{display:grid!important}.results #diagram .flow-row{grid-template-columns:1fr 24px 1fr 24px 1fr}.results #diagram .arrow{transform:none}.workspace{display:block!important}.room-panel{break-inside:auto}.build-step .section-title{margin-top:20px}}


/* Focused, sequential designer */
@media screen {
 main{max-width:none;width:100%;padding:28px clamp(16px,3vw,56px)}
 .workspace,body[data-build-step="6"] .workspace{display:block;width:100%}
 #configuration{width:100%;padding:clamp(20px,3vw,44px)}
 .build-steps{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}
 .build-steps button{padding:10px 16px}
 .build-step fieldset{margin-bottom:28px}
 .build-step>label{max-width:760px}
 .build-step .pair{gap:20px}
 .build-step .room{grid-template-columns:minmax(180px,2fr) minmax(90px,.5fr) minmax(160px,1fr);gap:20px;padding:14px 0}
 .advanced-options{padding:18px 20px;border:1px solid var(--line);border-radius:8px;margin:18px 0;background:#0d202c}
 .advanced-options[open]>summary{margin-bottom:22px}
 .choice-guide{margin-top:18px}
 .results{margin-top:24px}
 .results #diagram .flow-row{grid-template-columns:1fr 32px 1fr 32px 1fr}
 .results #diagram .arrow{transform:none}
 .step-controls{justify-content:space-between}
 #stepPosition{margin-left:0}
}
@media screen and (max-width:600px){
 .build-step .room{grid-template-columns:minmax(0,1fr) 80px;gap:12px}
 .build-step .room label:last-child{grid-column:1/-1}
 .build-step .pair{grid-template-columns:1fr;gap:0}
 .results #diagram .flow-row{grid-template-columns:1fr}
 .results #diagram .arrow{transform:rotate(90deg)}
 .step-controls #nextStep{flex-basis:100%}
 .build-steps button{padding:8px 10px}
}
@media print{.results[hidden]{display:block!important}}

.step-recommendations{padding:20px 24px;margin-bottom:26px;border:1px solid #527e70;border-radius:8px;background:#132e29}.step-recommendations h3{font-size:19px}.step-recommendations ul{padding-left:20px;margin:12px 0;color:#d2e5de;font-size:14px}.step-recommendations li{margin:8px 0}.step-recommendations button{margin-top:8px}.build-step .choice-guide{display:none}@media print{.step-recommendations{display:none!important}}

.zone-model{grid-column:1/-1;padding:12px 0}.zone-model label{font-size:14px}.zone-model .pair{grid-template-columns:1fr 1fr}@media(max-width:600px){.zone-model .pair{grid-template-columns:1fr}}