:root{
  --nav:#0F2D5B;
  --nav-2:#173F7A;
  --nav-3:#24539A;
  --accent:#2563EB;
  --accent-soft:#EBF1FF;
  --stone:#DCE8F8;
  --stone-2:#F3F7FD;
  --stone-3:#CBD5E1;
  --ink:#111827;
  --muted:#64748B;
  --line:#CBD5E1;
  --page:#F8FAFD;
  --pass:#176d3c;
  --fail:#b42318;
  --kl3:#eadcf4;
  --kl2:#fff0bf;
  --kl15:#d5e8f3;
  --kl1:#fff;
  --shadow:0 2px 10px rgba(15,45,91,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",Inter,Arial,sans-serif;background:var(--page);color:var(--ink);font-size:14px}
button,input,select{font:inherit}
.app-header{height:72px;display:flex;align-items:center;padding:0 22px;gap:24px;position:sticky;top:0;background:var(--nav);z-index:50;box-shadow:0 2px 12px rgba(0,0,0,.18)}
.brand{display:flex;align-items:center;gap:10px;min-width:210px;color:#fff}.brand-mark{width:40px;height:40px;border-radius:8px;background:#e9eef2;color:var(--nav);display:grid;place-items:center;font-weight:900;letter-spacing:.4px}.brand b{display:block;font-size:15px;letter-spacing:.2px}.brand small{display:block;color:#cbd7df;margin-top:1px}
.main-nav{display:flex;gap:4px;flex:1}.main-nav button{border:0;background:transparent;color:#e8eff4;padding:10px 14px;border-radius:7px;cursor:pointer;font-weight:650}.main-nav button:hover{background:var(--nav-2)}.main-nav button.active{background:#EBF1FF;color:#0F2D5B;font-weight:800;box-shadow:0 0 0 1px rgba(37,99,235,.12) inset}
.primary,.secondary{border-radius:6px;padding:9px 13px;font-weight:750;cursor:pointer;min-height:36px}.primary{background:var(--nav);color:#fff;border:1px solid var(--nav)}.primary:hover{background:#1D4ED8}.primary:disabled,.secondary:disabled{opacity:.52;cursor:not-allowed}.secondary{background:#fff;border:1px solid #71808a;color:#24323a}.secondary:hover{background:#f0f3f4}.danger{border-color:#b85a63;color:#95232d}.header-action{background:#2563EB;color:#fff;border-color:#2563EB;white-space:nowrap;box-shadow:0 1px 3px rgba(0,0,0,.16)}.header-action:hover{background:#1D4ED8;border-color:#1D4ED8}
.page{display:none;padding:0 22px 48px;max-width:1900px;margin:0 auto}.page.active{display:block}
.subtabs{display:flex;gap:5px;position:sticky;top:72px;z-index:40;background:#FFFFFF;border:1px solid #CBD5E1;border-top:0;padding:9px 10px;margin:0 -2px 18px;overflow:auto;box-shadow:0 3px 8px rgba(16,42,67,.06)}
.subtabs button,.report-tabs button{border:1px solid transparent;background:transparent;padding:9px 12px;border-radius:6px;cursor:pointer;color:#31424d;font-weight:650;white-space:nowrap}.subtabs button:hover,.report-tabs button:hover{background:#EBF1FF;color:#0F2D5B}.subtabs button.active,.report-tabs button.active{background:#2563EB;border-color:#2563EB;color:#fff;font-weight:800;box-shadow:0 1px 3px rgba(37,99,235,.2)}
.design-tab{display:none}.design-tab.active{display:block}
.direction-title{padding-top:4px}.direction-title h1{font-size:23px;margin:0 0 5px;color:#111;font-weight:800}.direction-title p{margin:0;color:var(--muted)}.direction-top{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;margin-bottom:14px}
.card{border:1px solid #CBD5E1;border-radius:9px;background:#fff;margin-bottom:18px;box-shadow:var(--shadow);overflow:hidden}.card-head{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;border-bottom:1px solid #BFD1EC;border-left:4px solid #2563EB;background:#DCEAFF}.card-head h2,.card-head h3{margin:0;font-size:16px;color:#111}.card-head p{margin:3px 0 0;color:#596268;font-size:12px}.card-body{padding:16px}
.grid{display:grid;gap:14px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.stack{display:grid;gap:12px}.input-column{background:#F0F6FF;border:1px solid #D4E2F6;border-radius:8px;padding:13px}.input-column h3{margin:0 0 10px;font-size:14px;color:#20282d}
label{font-size:12px;color:#2f3b43;font-weight:650}label .unit{font-weight:500;color:#6b7479}input,select{width:100%;border:1px solid #aab6bd;border-radius:5px;padding:8px 9px;background:#fff;color:#111;margin-top:5px;min-height:35px}select{text-align:center;text-align-last:center}input:disabled,select:disabled{background:#E8EEF7;color:#7B8794;cursor:not-allowed}input:focus,select:focus{outline:2px solid #BFDBFE;border-color:#2563EB}.readonly-box{background:#EFF5FC;border:1px solid #CBD9EA;border-radius:5px;padding:8px 9px;margin-top:5px;min-height:35px;display:flex;align-items:center}.muted{color:var(--muted)}.small-help{font-size:11px;color:var(--muted);margin-top:5px}.note{border-left:4px solid #2563EB;background:#EBF1FF;padding:10px 12px;margin:10px 0;font-size:12px}
.global-layout{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.global-card .card-body{background:#FFFFFF}
.orientation-topline{display:flex;justify-content:flex-start;margin-bottom:14px}.orientation-topline label{min-width:300px}.roof-orient{display:grid;grid-template-columns:155px minmax(460px,1fr) 155px;grid-template-rows:auto 310px auto;gap:28px;align-items:center;max-width:1120px;margin:0 auto}.roof-box{grid-column:2;grid-row:2;border:1.6px solid #222;background:#fbfbfa;position:relative;height:310px;display:flex;align-items:center;justify-content:center;text-align:center;color:#596267}.roof-box b{color:#111;font-size:18px;letter-spacing:.8px}.edge-control{background:#F0F6FF;border:1px solid #D4E2F6;border-radius:7px;padding:9px;display:grid;grid-template-columns:1fr;gap:6px;align-items:end;justify-content:center}.edge-control label{text-align:center}.edge-control select,.edge-control input{width:120px;margin-left:auto;margin-right:auto}.edge-control.top{grid-column:2;grid-row:1;grid-template-columns:repeat(3,120px);justify-content:center;gap:8px;width:auto;justify-self:center}.edge-control.bottom{grid-column:2;grid-row:3;grid-template-columns:repeat(3,120px);justify-content:center;gap:8px;width:auto;justify-self:center}.edge-control.left{grid-column:1;grid-row:2}.edge-control.right{grid-column:3;grid-row:2}.edge-control.inactive{opacity:.62;background:#E8EEF7}.wind-arrow{position:absolute;color:var(--nav);font-size:26px;font-weight:900;line-height:1}.wind-arrow.top{top:-29px;left:50%;transform:translateX(-50%)}.wind-arrow.bottom{bottom:-29px;left:50%;transform:translateX(-50%)}.wind-arrow.left{left:-29px;top:50%;transform:translateY(-50%)}.wind-arrow.right{right:-29px;top:50%;transform:translateY(-50%)}
.direction-settings.grouped{display:grid;grid-template-columns:minmax(360px,1fr) 34px minmax(360px,1fr);gap:10px;max-width:1000px;flex:1}.direction-setting-group{display:grid;grid-template-columns:repeat(3,minmax(115px,1fr));gap:10px;background:#F0F6FF;border:1px solid #D4E2F6;border-radius:8px;padding:10px;position:relative}.setting-group-title{position:absolute;top:-10px;left:12px;background:var(--page);padding:0 6px;font-size:11px;font-weight:800;color:var(--nav);text-transform:uppercase;letter-spacing:.4px}.direction-setting-gap{width:34px}.kc-field{position:relative}.kc-lock{float:right;font-size:10px;font-weight:600;color:#657078;display:flex;align-items:center;gap:3px}.kc-lock input{width:13px;height:13px;min-height:0;margin:0;padding:0;accent-color:var(--accent)}.kc-field.manual label,.cpe-field.manual label{color:var(--fail)}.kc-field.manual input[type=number],.cpe-field.manual input[type=number]{border-color:#c55b63;background:#fff7f7}.manual-kc-note,.zone-manual-note{color:var(--fail);font-size:12px;font-weight:700}.manual-kc-note{margin:-5px 0 14px}.zone-manual-note{padding:7px 13px;background:#fff8f8;border-bottom:1px solid #d8b7ba}.cpe-field label{display:block;text-align:center}.cpe-field .kc-lock{float:none;margin-left:8px;display:inline-flex}.cpe-input{text-align:center}
.zone-stack{display:grid;gap:17px}.zone-card{border:1px solid #adb5ba;border-radius:8px;overflow:hidden;background:#fff;box-shadow:0 1px 5px rgba(0,0,0,.04)}.zone-head{display:grid;grid-template-columns:minmax(240px,1fr) repeat(2,175px);gap:16px;align-items:end;padding:11px 13px;background:#EAF2FD;border-bottom:1px solid #B7CAE5}.zone-head h3{margin:0;color:#111;font-size:15px}.zone-range{font-size:11px;color:var(--muted);margin-top:3px}
.table-scroll{overflow:auto}.calc-table{width:100%;border-collapse:collapse;min-width:2050px;table-layout:auto;border:1.5px solid #111}.calc-table th{background:#E7EFF8;text-align:center;padding:9px 6px;font-size:11px;color:#252e33;border:1px solid #111;white-space:normal;line-height:1.16;height:58px}.calc-table th .unit{display:block;font-weight:500;color:#667178;margin-top:2px}.calc-table td{padding:7px 6px;border:1px solid #111;vertical-align:middle;white-space:normal;text-align:center;min-height:48px}.calc-table th:first-child,.calc-table td:first-child{border-left:2.2px solid #111}.calc-table th:last-child,.calc-table td:last-child{border-right:2.2px solid #111}.calc-table tr.kl-30 td{background:var(--kl3)}.calc-table tr.kl-20 td{background:var(--kl2)}.calc-table tr.kl-15 td{background:var(--kl15)}.calc-table tr.kl-10 td{background:var(--kl1)}.calc-table tr.failed-row td{color:var(--fail);font-weight:750}.calc-table .gstart{border-left:2.2px solid #111!important}.calc-table td input,.calc-table td select{margin:0;padding:6px 5px;min-width:0;width:100%;background:#fff;height:34px}.calc-table td:nth-child(2),.calc-table th:nth-child(2){min-width:125px}.calc-table td:nth-child(3),.calc-table th:nth-child(3){min-width:125px}.calc-table td:nth-child(5),.calc-table th:nth-child(5){min-width:115px}.calc-table td:nth-child(6),.calc-table th:nth-child(6){min-width:180px}.calc-table td:nth-child(7),.calc-table th:nth-child(7){min-width:180px}.calc-table td:nth-child(8),.calc-table th:nth-child(8){min-width:160px}.calc-table td:nth-child(9),.calc-table th:nth-child(9){min-width:82px;max-width:86px}.calc-table td.linked input:disabled,.calc-table td.linked select:disabled{background:rgba(255,255,255,.64)}.calc-table .kl{font-weight:800;color:#111;font-size:13px}.failed-row .kl{color:var(--fail)}.lock-cell{min-width:0}.lock-wrap{display:grid;grid-template-columns:16px minmax(0,1fr);gap:5px;align-items:center;justify-content:center}.calc-table td:nth-child(9) .lock-wrap{grid-template-columns:16px 48px;justify-content:center}.calc-table td:nth-child(9) select{width:48px}.unlock{width:15px!important;height:15px!important;min-height:0!important;margin:0!important;accent-color:var(--accent);cursor:pointer;padding:0!important}.unlock-spacer{display:block;width:15px;height:15px;visibility:hidden}.output{font-variant-numeric:tabular-nums}.patch-link{color:var(--accent);text-decoration:underline;cursor:pointer;font-weight:700}.pass{color:var(--pass);font-weight:800}.fail,.nodata{color:var(--fail);font-weight:800}
.diagram-wrap{border:0;padding:8px;background:#fff}.roof-svg{width:100%;height:auto;min-height:500px}.diagram-title{font-size:18px;font-weight:800;fill:#111}
.toolbar{display:flex;gap:10px;align-items:end;flex-wrap:wrap}.toolbar label{min-width:150px}.toolbar .library-search{min-width:260px}.library-count{margin-bottom:10px}.library-scroll{max-height:680px;overflow:auto;border:1px solid #b7bec2}.library-table{width:100%;border-collapse:separate;border-spacing:0}.library-table th,.library-table td{border-right:1px solid #b7bec2;border-bottom:1px solid #b7bec2;padding:8px 9px;text-align:left;font-size:12px;background:#fff}.library-table th:first-child,.library-table td:first-child{border-left:0}.library-table th{background:#DCE8F8;position:sticky;top:0;z-index:5;font-weight:800}.project-row,.report-row{display:grid;grid-template-columns:1fr 220px auto;gap:12px;align-items:center;border-bottom:1px solid #d1d4d5;padding:12px 0}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;align-items:center;justify-content:center;z-index:100}.modal.open{display:flex}.modal-card{background:#fff;border-radius:10px;max-width:820px;width:92%;padding:22px;position:relative;box-shadow:0 20px 60px rgba(0,0,0,.24)}.modal-card.wide{max-width:980px}.modal-close{position:absolute;right:14px;top:12px;border:0;background:transparent;font-size:28px;cursor:pointer}.detail-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}.detail-grid div{background:var(--stone-2);border:1px solid #ddd8cf;padding:9px;border-radius:5px;text-align:center}.toast{position:fixed;right:20px;bottom:20px;padding:12px 16px;background:#1f292d;color:#fff;border-radius:7px;display:none;z-index:120;max-width:520px;box-shadow:0 10px 30px rgba(0,0,0,.24)}.toast.show{display:block}
.report-tabs{display:flex;gap:5px;margin:16px 0;border-bottom:1px solid #c6cdd1;padding-bottom:9px}.report-settings-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.report-settings-col{display:grid;align-content:start;gap:12px;background:#F0F6FF;border:1px solid #D4E2F6;border-radius:8px;padding:13px}.report-logo-preview{height:92px;max-width:260px;object-fit:contain;border:1px dashed #9ca6ab;padding:8px;background:#fff}.optimise-actions{display:flex;gap:9px;flex-wrap:wrap;justify-content:flex-end}
@media(max-width:1180px){.direction-top{align-items:stretch;flex-direction:column}.direction-settings.grouped{grid-template-columns:1fr;max-width:none}.direction-setting-gap{display:none}.global-layout{grid-template-columns:1fr}.roof-orient{grid-template-columns:145px minmax(340px,1fr) 145px}.report-settings-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:760px){.app-header{height:auto;min-height:72px;flex-wrap:wrap;padding:10px 12px;gap:8px}.brand{min-width:auto}.main-nav{order:3;width:100%;overflow:auto}.header-action{margin-left:auto}.subtabs{top:113px}.page{padding:0 10px 35px}.direction-setting-group{grid-template-columns:1fr}.roof-orient{display:block}.roof-box{height:220px;margin:10px 0}.edge-control,.edge-control.top,.edge-control.bottom{margin:8px 0;display:grid;grid-template-columns:1fr;width:100%}.edge-control select,.edge-control input{width:100%}.report-settings-grid{grid-template-columns:1fr}.detail-grid{grid-template-columns:1fr 1fr}}


/* DNode Navy — canonical application theme (Design System 1.0)
   Primary #0F2D5B | Action #2563EB | Soft #EBF1FF | Surface #FFFFFF | Line #CBD5E1 */
body{background:#F8FAFD;color:#111827}
.app-header{background:#0F2D5B}
.brand-mark{background:#FFFFFF;color:#0F2D5B}
.brand small{color:#D7E3F5}
.primary{background:#2563EB;border-color:#2563EB;color:#FFFFFF}
.primary:hover{background:#1D4ED8;border-color:#1D4ED8}
.header-action{background:#2563EB!important;border-color:#2563EB!important;color:#FFFFFF!important}
.subtabs{background:#FFFFFF;border-color:#CBD5E1}
.subtabs button.active,.report-tabs button.active{background:#2563EB;border-color:#2563EB;color:#FFFFFF}
.card{background:#FFFFFF;border-color:#CBD5E1}
.card-head{background:#DCEAFF;border-bottom-color:#BFD1EC;border-left-color:#2563EB}
.input-column,.edge-control,.direction-setting-group,.report-settings-col{background:#F0F6FF;border-color:#D4E2F6}
.global-card .card-body{background:#FFFFFF}
.zone-head{background:#EAF2FD;border-bottom-color:#B7CAE5}
.calc-table th{background:#E7EFF8}
.library-table th{background:#DCE8F8}
.note{background:#EBF1FF;border-left-color:#2563EB}
.patch-link{color:#2563EB}
.wind-arrow{color:#2563EB}

/* Final 1.0 refinements */
.edge-control input[data-qz-dir]{text-align:center}
.secondary.compact{min-height:30px;padding:6px 10px;font-size:12px}
.calc-table{min-width:1920px}
.calc-table td:nth-child(2),.calc-table th:nth-child(2){min-width:92px;max-width:100px}
.calc-table td:nth-child(3),.calc-table th:nth-child(3){min-width:92px;max-width:100px}
.calc-table td:nth-child(5),.calc-table th:nth-child(5){min-width:84px;max-width:92px}
.calc-table td:nth-child(6),.calc-table th:nth-child(6){min-width:210px}
.calc-table td:nth-child(7),.calc-table th:nth-child(7){min-width:205px}
.calc-table td:nth-child(8),.calc-table th:nth-child(8){min-width:185px}
.calc-table td:nth-child(9),.calc-table th:nth-child(9){min-width:64px;max-width:68px}
.calc-table td:nth-child(9) .lock-wrap{grid-template-columns:14px 38px;gap:3px}
.calc-table td:nth-child(9) select{width:38px;padding-left:3px;padding-right:3px}
.calc-table .sls-detail{background:#F7FAFF!important;min-width:92px}
.calc-table tr.kl-30 .sls-detail{background:#F1E8F8!important}
.calc-table tr.kl-20 .sls-detail{background:#FFF6D9!important}
.calc-table tr.kl-15 .sls-detail{background:#E7F2F9!important}
.direction-title p{line-height:1.45}

/* Final pre-deployment refinements */
.subtabs .tab-spacer{flex:1 0 24px}
.subtabs .serviceability-nav{margin-left:auto;border:1px solid #2563EB;color:#0F2D5B;background:#EBF1FF;font-weight:800}
.subtabs .serviceability-nav:hover,.subtabs .serviceability-nav.active{background:#2563EB;color:#fff}
.report-settings-grid{align-items:start}
.report-naming{margin-top:6px;padding-top:10px;border-top:1px solid #BFD1EC}
.report-naming h3{margin:0 0 8px;font-size:13px;color:#0F2D5B}
.filename-head,.filename-row{display:grid;grid-template-columns:24px 1.05fr 1.25fr .8fr;gap:5px;align-items:center}
.filename-head{font-size:10px;font-weight:800;color:#64748B;margin-bottom:4px;text-align:center}
.filename-row{margin:4px 0}
.filename-row select,.filename-row input{min-width:0;width:100%;padding:6px 5px;min-height:32px;text-align:center}
.filename-position{font-size:11px;font-weight:800;color:#0F2D5B;text-align:center}
.filename-preview{margin-top:8px;padding:8px 9px;background:#fff;border:1px solid #CBD5E1;border-radius:5px;display:grid;gap:3px;overflow-wrap:anywhere}
.filename-preview b{font-size:10px;color:#64748B;text-transform:uppercase;letter-spacing:.3px}
.sls-detail{white-space:normal!important}
@media(max-width:1180px){.subtabs .tab-spacer{display:none}.subtabs .serviceability-nav{margin-left:8px}}

/* Server beta authentication */
.account-area{display:flex;align-items:center;gap:9px;margin-left:auto;color:#E6EEF9;font-size:12px;font-weight:700}
.account-logout{background:transparent;border:1px solid rgba(255,255,255,.55);color:#fff;border-radius:5px;padding:6px 10px;cursor:pointer}
.account-logout:hover{background:rgba(255,255,255,.1)}
.login-screen{position:fixed;inset:0;background:linear-gradient(145deg,#0F2D5B,#153E75);z-index:1000;display:none;align-items:center;justify-content:center;padding:20px}
.login-screen.open{display:flex}
.login-card{width:min(420px,94vw);background:#fff;border-radius:12px;padding:28px;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.login-brand{display:flex;align-items:center;gap:10px;color:#0F2D5B;margin-bottom:22px}
.login-brand .brand-mark{background:#0F2D5B;color:#fff}
.login-brand small{display:block;color:#64748B;font-weight:600}
.login-card h1{margin:0 0 5px;color:#0F172A;font-size:24px}
.login-card p{margin:0 0 20px;color:#64748B}
.login-card form{display:grid;gap:14px}
.login-card label{display:grid;gap:6px;font-size:12px;font-weight:800;color:#334155}
.login-card input{width:100%;box-sizing:border-box}
.login-card .primary{min-height:40px;font-size:14px}
.login-error{min-height:18px;color:#B42318;font-size:12px;font-weight:700}
@media(max-width:900px){.account-area{order:2}.header-action{order:2}.main-nav{order:3}}

.password-card{max-width:430px!important}.password-form{display:grid;gap:14px}.password-form label{display:grid;gap:6px;font-size:12px;font-weight:800;color:#334155}.password-form input{width:100%;box-sizing:border-box}.password-form .primary{min-height:40px}