*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',Arial,sans-serif;font-size:13px;background:#0f1115;color:#e6e9ef;overflow:hidden}
:root{--bg:#1c1f26;--bg2:#252932;--bg3:#2e333e;--border:#3a4150;--blue:#4da3ff;--blue2:#1d3452;--green:#3ddc84;--amber:#ffb648;--red:#ff6b6b;--text:#e6e9ef;--text2:#a3acbd;--panel-w:220px;--ribbon-h:88px;--bottom-h:180px;--canvas-bg:#14161b}
.ribbon{height:var(--ribbon-h);background:var(--bg);border-bottom:1px solid var(--border);display:flex;flex-direction:column;flex-shrink:0}
.ribbon-tabs{display:flex;background:#2a3a5c;height:28px}
.rtab{padding:0 14px;color:#a0adc0;font-size:12px;cursor:pointer;display:flex;align-items:center;border-right:1px solid #1e2d48;transition:all .15s}
.rtab.active{background:#1a6fb5;color:#fff}
.ribbon-tools{display:flex;align-items:center;padding:4px 8px;gap:4px;flex:1;overflow-x:auto}
.rtool{display:flex;flex-direction:column;align-items:center;gap:2px;padding:4px 8px;border-radius:6px;cursor:pointer;border:1px solid transparent;min-width:52px;transition:all .15s;user-select:none;color:var(--text)}
.rtool:hover{background:var(--bg2);border-color:var(--border)}
.rtool.active{background:var(--blue2);border-color:#90bce8;color:var(--blue)}
.rtool.snap-off{background:rgba(255,107,107,.10);border-color:rgba(255,107,107,.45);color:var(--red)}
.rtool i{font-size:18px}
.rtool span{font-size:10px;text-align:center;line-height:1.2;white-space:nowrap}
.rsep{width:1px;background:var(--border);height:40px;margin:0 4px;flex-shrink:0}
.rgroup{display:flex;align-items:center;gap:3px;padding:2px 5px 16px;border-right:1px solid var(--border);position:relative;flex-shrink:0}
.rgroup:last-of-type{border-right:0}
.rgroup-label{position:absolute;left:4px;right:4px;bottom:1px;text-align:center;font-size:9px;font-weight:700;color:#667085;text-transform:uppercase;letter-spacing:.35px;white-space:nowrap}
.rgroup .rtool{padding-left:6px;padding-right:6px;min-width:50px}

.workspace{display:flex;flex:1;overflow:hidden}
.left-panel{width:var(--panel-w);background:var(--bg);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;flex-shrink:0}
.panel-header{padding:8px 12px;font-weight:600;font-size:12px;color:var(--text2);background:var(--bg2);border-bottom:1px solid var(--border);text-transform:uppercase;letter-spacing:.5px}
.lib-search{padding:6px 8px;border-bottom:1px solid var(--border)}
.lib-search input{width:100%;padding:4px 8px;border:1px solid var(--border);border-radius:4px;font-size:12px;background:var(--bg);color:var(--text)}
.lib-group{overflow-y:auto;flex:1}
.lib-cat{padding:6px 12px 4px;font-size:11px;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:.5px;background:var(--bg2);border-bottom:1px solid var(--border)}
.lib-item{display:flex;align-items:center;gap:8px;padding:5px 12px;cursor:grab;border-bottom:1px solid var(--border);transition:background .1s;user-select:none}
.lib-item:hover{background:var(--blue2)}
.lib-item:active{cursor:grabbing}
.lib-sym{width:28px;height:24px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.lib-label{font-size:12px;color:var(--text)}
.canvas-area{flex:1;position:relative;overflow:hidden;background:var(--canvas-bg)}
#main-canvas{position:absolute;top:0;left:0;cursor:crosshair}
.canvas-toolbar{position:absolute;top:8px;left:50%;transform:translateX(-50%);display:flex;gap:4px;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:4px;box-shadow:0 2px 8px rgba(0,0,0,.1);z-index:10}
.ctool{width:30px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:4px;cursor:pointer;border:1px solid transparent;transition:all .15s;color:var(--text)}
.ctool:hover{background:var(--bg2);border-color:var(--border)}
.ctool.active{background:var(--blue2);border-color:#90bce8;color:var(--blue)}
.ctool i{font-size:15px}
.view-toggle{position:absolute;top:8px;right:8px;display:flex;background:var(--bg);border:1px solid var(--border);border-radius:6px;overflow:hidden;z-index:10}
.vtbtn{padding:5px 14px;font-size:12px;cursor:pointer;border:none;background:transparent;color:var(--text2);transition:all .15s}
.vtbtn.active{background:var(--blue);color:#fff}
.right-panel{width:240px;background:var(--bg);border-left:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;flex-shrink:0}
.prop-group{padding:8px 10px;border-bottom:1px solid var(--border)}
.prop-group-label{font-size:10px;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:.5px;margin-bottom:6px}
.prop-row{display:flex;align-items:center;gap:6px;margin-bottom:5px}
.prop-label{width:82px;font-size:11px;color:var(--text2);flex-shrink:0}
.prop-input{flex:1;padding:3px 6px;border:1px solid var(--border);border-radius:3px;font-size:11px;background:var(--bg);color:var(--text);min-width:0}
.prop-input:focus{outline:none;border-color:var(--blue)}
.prop-select{flex:1;padding:3px 6px;border:1px solid var(--border);border-radius:3px;font-size:11px;background:var(--bg);color:var(--text)}
.no-sel{padding:20px 12px;text-align:center;color:var(--text2);font-size:12px;line-height:1.6}
.bottom-panel{background:var(--bg);border-top:1px solid var(--border);flex-shrink:0;transition:height .2s}
.bottom-panel.collapsed{height:28px!important}
.bottom-tabs{display:flex;height:28px;border-bottom:1px solid var(--border)}
.btab{padding:0 14px;font-size:12px;cursor:pointer;display:flex;align-items:center;gap:4px;border-right:1px solid var(--border);color:var(--text2);transition:all .15s;white-space:nowrap}
.btab.active{color:var(--blue);font-weight:600}
.btab .badge{padding:1px 5px;border-radius:10px;font-size:10px;background:rgba(255,107,107,.18);color:var(--red);font-weight:600}
.btab .badge.ok{background:rgba(61,220,132,.18);color:var(--green)}
.btab .badge.warn{background:rgba(255,182,72,.18);color:var(--amber)}
.bcollapse{margin-left:auto;padding:0 10px;cursor:pointer;color:var(--text2);font-size:16px;display:flex;align-items:center}
.bottom-content{height:152px;overflow-y:auto;padding:8px 12px}
.issue-item{display:flex;align-items:flex-start;gap:8px;padding:4px 0;border-bottom:1px solid var(--border);font-size:12px}
.issue-dot{width:6px;height:6px;border-radius:50%;margin-top:4px;flex-shrink:0}
.issue-dot.err{background:var(--red)}
.issue-dot.warn{background:#e8a020}
.issue-dot.ok{background:var(--green)}
.status-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.status-card{background:var(--bg2);border:1px solid var(--border);border-radius:6px;padding:8px 10px}
.status-card .val{font-size:20px;font-weight:600;margin-bottom:2px}
.status-card .lbl{font-size:11px;color:var(--text2)}
.status-card.ok .val{color:var(--green)}
.status-card.warn .val{color:var(--amber)}
.status-card.err .val{color:var(--red)}
.calc-section{margin-bottom:10px;border:1px solid var(--border);border-radius:6px;overflow:hidden}
.calc-hdr{padding:6px 10px;background:var(--bg2);font-size:12px;font-weight:600;display:flex;justify-content:space-between;align-items:center}
.calc-body{padding:8px 10px;font-size:11px;color:var(--text2);line-height:1.6}
.calc-placeholder{color:var(--text2);font-style:italic}
.tag-pill{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:10px;font-size:11px;font-weight:600}
.tag-pill.pending{background:rgba(255,182,72,.2);color:var(--amber)}
.tag-pill.ready{background:rgba(61,220,132,.2);color:var(--green)}
.tag-pill.issues{background:rgba(255,107,107,.2);color:var(--red)}
#canvas3d{position:absolute;top:0;left:0;display:none}
#main-canvas,#canvas3d{width:100%;height:100%;touch-action:none}
.canvas-hint{position:absolute;bottom:8px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.55);color:#fff;font-size:11px;padding:4px 10px;border-radius:10px;pointer-events:none;z-index:5;white-space:nowrap}
.grid-coords{position:absolute;bottom:8px;left:8px;font-size:11px;color:#888;pointer-events:none;z-index:5}
.conn-pending{position:absolute;bottom:8px;left:50%;transform:translateX(-50%);background:#1a6fb5;color:#fff;font-size:12px;padding:5px 14px;border-radius:12px;z-index:20;pointer-events:none}
.wf-step{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px solid var(--border);font-size:12px}
.wf-num{width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:600;flex-shrink:0}
.wf-num.done{background:#d4edda;color:var(--green)}
.wf-num.active{background:var(--blue);color:#fff}
.wf-num.todo{background:var(--bg3);color:var(--text2)}
.report-section{padding:8px 12px}
.report-btn{width:100%;padding:6px 10px;margin-bottom:4px;border:1px solid var(--border);border-radius:4px;background:var(--bg);cursor:pointer;font-size:12px;text-align:left;transition:all .15s;color:var(--text)}
.report-btn:hover{background:var(--blue2);border-color:#90bce8;color:var(--blue)}
.sched-table{width:100%;border-collapse:collapse;font-size:11px}
.sched-table th{background:var(--bg2);padding:4px 8px;border:1px solid var(--border);font-weight:600;text-align:left}
.sched-table td{padding:3px 8px;border:1px solid var(--border)}
.layer-row{display:flex;align-items:center;gap:6px;padding:5px 12px;border-bottom:1px solid var(--border)}
.layer-row input[type=checkbox]{cursor:pointer}
.layer-label{font-size:12px;flex:1}
.layer-color{width:12px;height:12px;border-radius:2px;flex-shrink:0}
.main-layout{display:flex;flex-direction:column;height:100vh;overflow:hidden}
.calc-grid{display:grid;grid-template-columns:repeat(4,minmax(120px,1fr));gap:6px;margin-bottom:8px}
.calc-btn{padding:6px 8px;border:1px solid var(--border);border-radius:5px;background:var(--bg);cursor:pointer;font-size:11px;color:var(--text);text-align:left}
.calc-btn:hover{background:var(--blue2);border-color:#90bce8;color:var(--blue)}
.calc-result-table{width:100%;border-collapse:collapse;font-size:11px;margin-top:6px}
.calc-result-table th,.calc-result-table td{border:1px solid var(--border);padding:4px 6px;text-align:left;vertical-align:top}
.calc-result-table th{background:var(--bg2);font-weight:600}
.report-page{background:#fff;color:#111;padding:18px;line-height:1.45;font-size:12px}
.report-page h1{font-size:22px;margin-bottom:6px;color:#1a3f67}
.report-page h2{font-size:15px;margin:14px 0 6px;color:#1a3f67;border-bottom:1px solid #cfd6df;padding-bottom:3px}
.report-page table{width:100%;border-collapse:collapse;margin:6px 0 10px;font-size:11px}
.report-page th,.report-page td{border:1px solid #bbb;padding:5px;text-align:left;vertical-align:top}
.report-page th{background:#eef3f8}
.report-note{border-left:4px solid var(--amber);background:#fff8e8;padding:7px 10px;margin:8px 0}
.nav-hint{position:absolute;top:48px;right:8px;background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:5px 8px;font-size:11px;color:var(--text2);z-index:10;box-shadow:0 2px 8px rgba(0,0,0,.4)}


/* Large calculation results workspace */
.calc-results-drawer{position:fixed;top:96px;right:252px;height:calc(100vh - 294px);width:min(620px,calc(100vw - 520px));min-width:420px;min-height:260px;max-width:calc(100vw - 280px);max-height:calc(100vh - 120px);background:var(--bg);border:1px solid var(--border);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.5);z-index:60;display:none;flex-direction:column;overflow:hidden;resize:both}
.calc-results-drawer.open{display:flex}
.calc-drawer-head{display:flex;align-items:center;gap:8px;padding:10px 12px;background:var(--bg2);border-bottom:1px solid var(--border);cursor:move;user-select:none}
.calc-drawer-head button,.calc-drawer-head .calc-mini-btn{cursor:pointer}
.calc-results-drawer.dragging{box-shadow:0 14px 36px rgba(0,0,0,.6);opacity:.98}
.calc-drawer-title{font-weight:700;font-size:13px;color:var(--text);flex:1}
.calc-drawer-actions{display:flex;gap:6px}
.calc-mini-btn{border:1px solid var(--border);background:var(--bg);border-radius:5px;padding:5px 8px;font-size:11px;cursor:pointer;color:var(--text)}
.calc-mini-btn:hover{background:var(--blue2);border-color:var(--blue);color:var(--blue)}
.calc-drawer-body{padding:10px 12px;overflow-y:auto;flex:1;background:var(--bg)}
.calc-summary-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:10px}
.calc-summary-card{border:1px solid var(--border);border-radius:8px;background:var(--bg2);padding:9px 10px}
.calc-summary-card .big{font-size:18px;font-weight:700;color:var(--blue);line-height:1.1}
.calc-summary-card .small{font-size:10px;text-transform:uppercase;letter-spacing:.4px;color:var(--text2);margin-top:3px}
.calc-action-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin-bottom:10px}
.calc-action-grid .calc-btn,.calc-btn{padding:7px 8px;border:1px solid var(--border);border-radius:6px;background:var(--bg);cursor:pointer;font-size:11px;text-align:left;color:var(--text)}
.calc-action-grid .calc-btn:hover,.calc-btn:hover{background:var(--blue2);border-color:var(--blue);color:var(--blue)}
.calc-card{border:1px solid var(--border);border-radius:8px;margin-bottom:10px;background:var(--bg);overflow:hidden}
.calc-card-head{display:flex;align-items:center;gap:8px;background:var(--bg2);padding:8px 10px;border-bottom:1px solid var(--border)}
.calc-card-title{font-size:13px;font-weight:700;flex:1;color:var(--text)}
.calc-card-result{font-size:16px;font-weight:800;color:var(--green);white-space:nowrap;text-shadow:0 0 10px rgba(61,220,132,.18)}
.calc-resistance-result{color:var(--green)!important;font-weight:800}
.calc-input-label{color:var(--text2);font-weight:700}
.soil-preset-blue,.soil-preset-blue option,.efficiency-factor-blue,.pe-advanced-blue{color:var(--blue)!important;font-weight:700}
.soil-preset-blue,.efficiency-factor-blue,.pe-advanced-blue{border-color:rgba(77,163,255,.7)!important;background:rgba(77,163,255,.08)!important}
.pe-advanced-checkbox{accent-color:var(--blue)}
.calc-card-body{padding:10px;font-size:12px;line-height:1.55}
.calc-kv{display:grid;grid-template-columns:130px 1fr;gap:5px 8px;margin-bottom:8px}
.calc-kv .k{font-weight:600;color:var(--text2)}
.calc-kv .v{color:var(--text)}
.calc-detail{border-top:1px solid var(--border);margin-top:8px;padding-top:8px}
.calc-warn-list{margin:6px 0 0 16px;color:var(--amber)}
.calc-lim-list{margin:6px 0 0 16px;color:var(--text2)}
.calc-empty{border:1px dashed var(--border);border-radius:8px;padding:18px;text-align:center;color:var(--text2);font-size:12px;background:var(--bg2)}
.report-page{font-size:12px;line-height:1.55;color:#222;background:#fff}
.report-page h1{font-size:20px;margin:0 0 8px}.report-page h2{font-size:15px;margin:14px 0 6px;border-bottom:1px solid #ddd;padding-bottom:3px}.report-page table{width:100%;border-collapse:collapse;margin:6px 0 10px}.report-page th,.report-page td{border:1px solid #ccc;padding:5px;text-align:left;vertical-align:top}.report-note{background:#fff8e6;border:1px solid #f0d38a;padding:8px;margin:10px 0;border-radius:6px}

.main-layout:fullscreen{width:100vw;height:100vh;background:var(--canvas-bg)}
html:fullscreen,html:-webkit-full-screen{width:100vw;height:100vh;background:var(--canvas-bg)}
body.fullscreen-active{width:100vw;height:100vh;overflow:hidden}
body.fullscreen-active .calc-results-drawer{top:96px;height:calc(100vh - 120px);z-index:9600}
body.fullscreen-active #template-overlay,
body.fullscreen-active #library-overlay,
body.fullscreen-active #gc-help-overlay,
body.fullscreen-active #soil-rho-overlay{z-index:9800}
body.fullscreen-active .ribbon-tools{scrollbar-width:thin}
body.fullscreen-active .rtool{flex-shrink:0}
@media (max-width:1100px){.calc-results-drawer{left:240px;right:10px;width:auto;min-width:0}}
@media print{.ribbon,.left-panel,.right-panel,.canvas-area,.bottom-panel,.calc-drawer-head{display:none!important}.calc-results-drawer{display:block!important;position:static!important;width:auto!important;min-width:0!important;border:0!important;box-shadow:none!important}.calc-drawer-body{overflow:visible!important;padding:0!important}}

.ring-create-toolbar{position:absolute;top:48px;left:50%;transform:translateX(-50%);display:flex;gap:6px;background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:6px;box-shadow:0 4px 14px rgba(0,0,0,.5);z-index:25}
.ring-create-toolbar button{border:1px solid var(--border);background:var(--bg);border-radius:5px;padding:5px 9px;font-size:11px;cursor:pointer;color:var(--text)}
.ring-create-toolbar button:hover{background:var(--blue2);border-color:var(--blue);color:var(--blue)}
.prop-input[readonly]{background:var(--bg3);color:var(--text2)}


/* IEEE 80 GroundCheck App Header */
#gc-appbar{
  display:flex;align-items:center;gap:0;background:linear-gradient(90deg,#0d1f3c 0%,#162d52 60%,#1a3a6b 100%);
  height:38px;padding:0 14px 0 10px;flex-shrink:0;border-bottom:2px solid #2a6fb5;
  box-shadow:0 2px 8px rgba(0,0,0,.35);position:relative;z-index:100;
}
#gc-logo-mark{font-family:'Courier New',monospace;font-size:18px;font-weight:900;color:#fff;letter-spacing:-1px;line-height:1}
#gc-logo-mark span{color:#3fa8ff}
#gc-byline{font-size:10px;color:#6a8cb0;letter-spacing:.5px;margin-left:4px;padding-top:1px}
#gc-title-sep{width:1px;height:20px;background:#2a4a7a;margin:0 12px;flex-shrink:0}
#gc-app-name{font-size:12px;font-weight:600;color:#c5d8ef;letter-spacing:.3px}
#gc-spacer{flex:1}
#gc-helpbtn{
  display:flex;align-items:center;gap:5px;padding:5px 13px;background:#1a6fb5;border:1px solid #2a85d0;
  border-radius:5px;cursor:pointer;color:#fff;font-size:11px;font-weight:600;letter-spacing:.3px;
  transition:all .15s;user-select:none;
}
#gc-helpbtn:hover{background:#1e82d4;box-shadow:0 0 0 2px rgba(30,130,212,.3)}
#gc-helpbtn i{font-size:13px}
#gc-version{font-size:10px;color:#4a6a8a;margin-left:10px;letter-spacing:.3px}

/* Help Modal */
#gc-help-overlay{
  display:none;position:fixed;inset:0;background:rgba(5,15,35,.72);z-index:9000;
  align-items:center;justify-content:center;backdrop-filter:blur(3px);
}
#gc-help-overlay.open{display:flex}
#gc-help-modal{
  background:var(--bg);border-radius:12px;box-shadow:0 24px 64px rgba(0,0,0,.6);
  width:min(900px,96vw);max-height:92vh;display:flex;flex-direction:column;overflow:hidden;
  border:1px solid var(--border);
}
#gc-help-head{
  display:flex;align-items:center;padding:16px 20px 14px;background:linear-gradient(135deg,#0d1f3c,#1a4a88);
  flex-shrink:0;gap:10px;
}
#gc-help-head-logo{font-family:'Courier New',monospace;font-size:22px;font-weight:900;color:#fff;letter-spacing:-1px}
#gc-help-head-logo span{color:#3fa8ff}
#gc-help-head-sub{font-size:11px;color:#7aaad8;letter-spacing:.5px;margin-top:1px}
#gc-help-head-spacer{flex:1}
#gc-help-close{
  width:28px;height:28px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;
  transition:background .15s;line-height:1;
}
#gc-help-close:hover{background:rgba(255,255,255,.22)}
#gc-help-layout{display:flex;flex:1;min-height:0;overflow:hidden}
#gc-help-nav{
  width:210px;flex-shrink:0;background:var(--bg2);border-right:1px solid var(--border);
  overflow-y:auto;padding:10px 0;
}
.gc-hnav-item{
  padding:7px 16px;font-size:12px;cursor:pointer;border-left:3px solid transparent;
  color:var(--text2);transition:all .12s;line-height:1.3;
}
.gc-hnav-item:hover{background:var(--blue2);color:var(--blue)}
.gc-hnav-item.active{background:var(--blue2);color:var(--blue);border-left-color:var(--blue);font-weight:600}
.gc-hnav-sep{height:1px;background:var(--border);margin:6px 12px}
#gc-help-body{flex:1;overflow-y:auto;padding:22px 26px;background:var(--bg)}
#gc-help-body h2{font-size:16px;font-weight:700;color:var(--blue);margin:0 0 12px;padding-bottom:8px;border-bottom:2px solid var(--blue2)}
#gc-help-body h3{font-size:13px;font-weight:700;color:var(--blue);margin:18px 0 7px}
#gc-help-body h4{font-size:12px;font-weight:700;color:var(--blue);margin:14px 0 5px}
#gc-help-body p{font-size:12px;line-height:1.75;color:var(--text);margin:0 0 10px}
#gc-help-body ul,#gc-help-body ol{font-size:12px;color:var(--text);margin:0 0 10px 18px;line-height:1.75}
#gc-help-body li{margin-bottom:3px}
.gc-formula-box{
  background:var(--bg3);border:1px solid var(--border);border-radius:7px;padding:10px 14px;
  font-family:'Courier New',monospace;font-size:11.5px;color:var(--text);margin:8px 0 12px;
  line-height:1.9;overflow-x:auto;white-space:pre-wrap;
}
.gc-note-box{
  background:rgba(255,182,72,.12);border-left:4px solid var(--amber);border-radius:0 6px 6px 0;
  padding:9px 14px;font-size:12px;color:var(--text);margin:10px 0;line-height:1.65;
}
.gc-tip-box{
  background:rgba(61,220,132,.12);border-left:4px solid var(--green);border-radius:0 6px 6px 0;
  padding:9px 14px;font-size:12px;color:var(--text);margin:10px 0;line-height:1.65;
}
#gc-help-body table{width:100%;border-collapse:collapse;margin:8px 0 14px;font-size:11.5px}
#gc-help-body th{background:var(--bg2);padding:6px 10px;border:1px solid var(--border);font-weight:700;color:var(--blue);text-align:left}
#gc-help-body td{padding:5px 10px;border:1px solid var(--border);color:var(--text);vertical-align:top}
#gc-help-body tr:nth-child(even) td{background:rgba(255,255,255,.03)}
.gc-section-content{display:none}
.gc-section-content.active{display:block}


/* ============================================================
   TRACEABLE CALCULATION ARCHITECTURE — DIAGNOSTIC UI
   Added without changing the validated engineering formulas.
   ============================================================ */
.calc-architecture-toolbar{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px;padding:8px;border:1px solid var(--border);border-radius:8px;background:var(--bg2)}
.calc-architecture-toolbar .calc-mini-btn{display:inline-flex;align-items:center;gap:5px}
.calc-id-badge{display:inline-flex;align-items:center;padding:2px 7px;border-radius:10px;background:rgba(77,163,255,.14);color:var(--blue);font-family:Consolas,monospace;font-size:10px;font-weight:700;margin-right:6px}
.calc-formula-id{font-family:Consolas,monospace;color:var(--blue);font-size:11px}
.calc-trace-table{width:100%;border-collapse:collapse;margin-top:7px;font-size:11px}
.calc-trace-table th,.calc-trace-table td{border:1px solid var(--border);padding:5px 6px;text-align:left;vertical-align:top}
.calc-trace-table th{background:var(--bg2);color:var(--text2)}
.calc-trace-step{font-family:Consolas,monospace;color:var(--text)}
.calc-entered-value{color:var(--blue);font-weight:700}
.calc-normalized-value{color:#77baff;font-weight:600}
.calc-derived-value{color:var(--green);font-weight:700}
.calc-diagnostic-ok{color:var(--green)}
.calc-diagnostic-warn{color:var(--amber)}
.calc-diagnostic-error{color:var(--red)}
.calc-registry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:8px 0}
.calc-registry-item{border:1px solid var(--border);border-radius:7px;padding:8px;background:var(--bg2)}
.calc-registry-item code{color:var(--blue)}
@media(max-width:760px){.calc-registry-grid{grid-template-columns:1fr}}



/* ============================================================
   PROFESSIONAL CALCULATION RESULTS COLOR HIERARCHY
   Visual-only update; no calculation formulas or values changed.
   ============================================================ */
:root{
  --calc-input-blue:#7db9f2;
  --calc-normalized-blue:#a9c5df;
  --calc-result-green:#52d68a;
  --calc-label:#b8c2d1;
  --calc-value:#eef2f7;
  --calc-formula:#c8baf5;
  --calc-note:#98a5b7;
}
.calc-results-drawer .calc-card{border-color:#414a5a;background:#1b1f27}
.calc-results-drawer .calc-card-head{background:#252a34;border-bottom-color:#414a5a}
.calc-results-drawer .calc-card-title{color:#dce3ed;font-size:13px;font-weight:650;line-height:1.35}
.calc-results-drawer .calc-card-result{
  color:var(--calc-result-green);
  font-size:17px;
  font-weight:750;
  font-variant-numeric:tabular-nums;
  letter-spacing:.1px;
  text-shadow:none;
  background:rgba(82,214,138,.075);
  border:1px solid rgba(82,214,138,.24);
  border-radius:6px;
  padding:4px 8px;
}
.calc-results-drawer .calc-kv .k{color:var(--calc-label);font-weight:650}
.calc-results-drawer .calc-kv .v{color:var(--calc-value)}
.calc-results-drawer .calc-kv code,
.calc-results-drawer .calc-trace-step,
.calc-results-drawer .calc-formula-id{color:var(--calc-formula)}
.calc-results-drawer .calc-input-label{color:var(--calc-label);font-weight:650}
.calc-results-drawer .calc-input-value,
.calc-results-drawer .calc-entered-value{color:var(--calc-input-blue)!important;font-weight:700}
.calc-results-drawer .calc-normalized-value{color:var(--calc-normalized-blue)!important;font-weight:650}
.calc-results-drawer .calc-derived-value{color:var(--calc-value)!important;font-weight:650}
.calc-results-drawer .calc-trace-table th{color:var(--calc-label);background:#252a34}
.calc-results-drawer .calc-trace-table td{color:var(--calc-value)}
.calc-results-drawer .calc-trace-table td.calc-entered-value{color:var(--calc-input-blue)!important}
.calc-results-drawer .calc-trace-table td.calc-normalized-value{color:var(--calc-normalized-blue)!important}
.calc-results-drawer .calc-trace-table td.calc-derived-value{color:var(--calc-value)!important}
.calc-results-drawer .calc-diagnostic-ok{color:var(--calc-result-green)}
.calc-results-drawer .calc-diagnostic-warn{color:#f2b84b}
.calc-results-drawer .calc-diagnostic-error{color:#ff7373}
.calc-results-drawer .calc-warn-list{color:#f2b84b}
.calc-results-drawer .calc-lim-list{color:var(--calc-note)}
.calc-results-drawer details summary{color:#d7dee8}
.calc-results-drawer h4{color:#cbd5e1}
.calc-results-drawer .calc-id-badge{color:var(--calc-input-blue);background:rgba(125,185,242,.11)}

/* User-entered engineering setup values remain blue, but less saturated. */
.soil-preset-blue,.soil-preset-blue option,
.efficiency-factor-blue,.pe-advanced-blue{
  color:var(--calc-input-blue)!important;
  font-weight:700;
}
.soil-preset-blue,.efficiency-factor-blue,.pe-advanced-blue{
  border-color:rgba(125,185,242,.52)!important;
  background:rgba(125,185,242,.065)!important;
}