*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Segoe UI',Arial,sans-serif;font-size:13px;background:#f0f2f5;color:#1a1a1a;overflow:hidden}
:root{--bg:#fff;--bg2:#f5f6f8;--bg3:#eceef1;--border:#d0d4da;--blue:#1a6fb5;--blue2:#e8f1fb;--green:#1a7a3a;--amber:#b56a00;--red:#c0302a;--text:#1a1a1a;--text2:#555;--panel-w:220px;--ribbon-h:88px;--bottom-h:180px}
.main-layout{display:flex;flex-direction:column;height:100vh;overflow:hidden}

/* ===== App header ===== */
#cr-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}
#cr-logo-mark{font-family:'Courier New',monospace;font-size:18px;font-weight:900;color:#fff;letter-spacing:-1px;line-height:1}
#cr-logo-mark span{color:#3fa8ff}
#cr-byline{font-size:10px;color:#6a8cb0;letter-spacing:.5px;margin-left:4px;padding-top:1px}
#cr-title-sep{width:1px;height:20px;background:#2a4a7a;margin:0 12px;flex-shrink:0}
#cr-app-name{font-size:12px;font-weight:600;color:#c5d8ef;letter-spacing:.3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;flex-shrink:1}
#cr-spacer{flex:1}
#cr-version{font-size:10px;color:#4a6a8a;margin-left:10px;letter-spacing:.3px}
#cr-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}
#cr-helpbtn:hover{background:#1e82d4;box-shadow:0 0 0 2px rgba(30,130,212,.3)}
#cr-helpbtn i{font-size:13px}

/* ===== Ribbon ===== */
.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;user-select:none}
.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 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}
.rnote{padding:0 8px;font-size:11px;color:var(--amber);display:flex;align-items:center;gap:4px;white-space:nowrap}

/* ===== Workspace ===== */
.workspace{display:flex;flex:1;min-height:0;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 #f0f2f5;transition:background .1s;user-select:none}
.lib-item:hover{background:var(--blue2)}
.lib-item.active{background:var(--blue2);box-shadow:inset 2px 0 0 var(--blue)}
.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:#f0f2f5}
.canvas-footer-brand{position:absolute;bottom:10px;left:50%;transform:translateX(-50%);z-index:11;pointer-events:none;font-size:11px;font-weight:600;letter-spacing:.15px;color:var(--text2);background:rgba(21,26,34,.78);border:1px solid var(--border);border-radius:6px;padding:4px 10px;white-space:nowrap;box-shadow:0 1px 5px rgba(0,0,0,.25)}
@media print{.canvas-footer-brand{display:none!important}}
#main-canvas{position:absolute;top:0;left:0;width:100%;height:100%;touch-action:none;cursor:crosshair;z-index:2}
#three-container{position:absolute;inset:0;display:none;z-index:1;background:#f7f9fb}
#three-container canvas{display:block;width:100%;height:100%;outline:none}
.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;box-shadow:0 2px 8px rgba(0,0,0,.1)}
.vtbtn{padding:5px 11px;font-size:11px;cursor:pointer;border:none;background:transparent;color:var(--text2);transition:all .15s;border-right:1px solid var(--border)}
.vtbtn:last-child{border-right:none}
.vtbtn.active{background:var(--blue);color:#fff}
.nav-hint{position:absolute;top:48px;right:8px;background:#fff;border:1px solid var(--border);border-radius:6px;padding:5px 8px;font-size:11px;color:#555;z-index:10;box-shadow:0 2px 8px rgba(0,0,0,.08);max-width:220px;text-align:right}
.grid-coords{position:absolute;bottom:8px;left:8px;font-size:11px;color:#888;pointer-events:none;z-index:5;background:rgba(255,255,255,.7);padding:2px 6px;border-radius:4px}
.canvas-hint{position:absolute;bottom:8px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.6);color:#fff;font-size:11px;padding:4px 10px;border-radius:10px;pointer-events:none;z-index:5;white-space:nowrap;display:none}
.conn-pending{position:absolute;bottom:36px;left:50%;transform:translateX(-50%);background:#1a6fb5;color:#fff;font-size:12px;padding:5px 14px;border-radius:12px;z-index:20;pointer-events:none;display:none}
.view3d-badge{position:absolute;top:48px;left:8px;background:rgba(26,111,181,.12);border:1px solid #90bce8;border-radius:6px;padding:6px 10px;z-index:10;font-size:11px;color:#555;display:none;max-width:240px}
.view3d-badge strong{color:var(--blue);display:block;font-size:11px;margin-bottom:2px}

.right-panel{width:250px;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 #f0f0f0}
.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:96px;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-input[readonly]{background:#f1f3f5;color:#666}
.prop-select{flex:1;padding:3px 6px;border:1px solid var(--border);border-radius:3px;font-size:11px;background:var(--bg);color:var(--text)}
.prop-check{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--text);margin-bottom:5px}
.no-sel{padding:20px 12px;text-align:center;color:var(--text2);font-size:12px;line-height:1.6}
.prop-btn{width:100%;padding:5px 8px;border:1px solid var(--border);border-radius:4px;background:#fff;cursor:pointer;font-size:11px;color:var(--text);margin-top:4px}
.prop-btn:hover{background:var(--blue2);border-color:#90bce8;color:var(--blue)}
.prop-btn.danger{color:var(--red);border-color:#e8b8b4}
.prop-btn.danger:hover{background:#fbeceb}
.dir-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin:8px 0 12px}
.dirbtn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:10px 4px;border:1px solid var(--border);border-radius:6px;background:#fff;cursor:pointer;color:var(--text);transition:all .15s;user-select:none}
.dirbtn:hover{background:var(--blue2);border-color:#90bce8}
.dirbtn.active{background:var(--blue);border-color:var(--blue);color:#fff}
.dirbtn i{font-size:18px}
.dirbtn span{font-size:10px;font-weight:600;text-align:center;line-height:1.2}
.turn-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin:8px 0 4px}
.angle-presets{display:flex;gap:6px;margin:6px 0 10px}
.angle-preset{flex:1;padding:4px 0;border:1px solid var(--border);border-radius:4px;background:#fff;cursor:pointer;font-size:11px;color:var(--text2);text-align:center}
.angle-preset:hover{background:var(--blue2);border-color:#90bce8;color:var(--blue)}
.angle-preset.active{background:var(--blue2);border-color:#90bce8;color:var(--blue);font-weight:600}
.pill{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;border-radius:10px;font-size:10px;font-weight:600}
.pill.ok{background:#e6f4e6;color:var(--green)}
.pill.warn{background:#fff3cd;color:var(--amber)}
.pill.err{background:#f8d7da;color:var(--red)}
.pill.muted{background:var(--bg3);color:var(--text2)}

/* ===== Bottom panel ===== */
.bottom-panel{background:var(--bg);border-top:1px solid var(--border);flex-shrink:0;transition:height .2s}
.bottom-tabs{display:flex;align-items:center;border-bottom:1px solid var(--border);background:var(--bg2)}
.btab{display:flex;align-items:center;gap:6px;padding:7px 12px;font-size:12px;cursor:pointer;color:var(--text2);border-right:1px solid var(--border);user-select:none}
.btab.active{background:var(--bg);color:var(--text);font-weight:600;box-shadow:inset 0 -2px 0 var(--blue)}
.btab .badge{padding:0 6px;border-radius:8px;font-size:10px;font-weight:700;background:var(--bg3);color:var(--text2)}
.btab .badge.issues{background:#fbeceb;color:var(--red)}
.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 #f5f5f5;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 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)}
.wf-step{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px solid #f0f0f0;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)}
.log-item{font-size:11px;color:var(--text2);padding:2px 0;border-bottom:1px solid #f7f7f7;font-family:'Courier New',monospace}

/* ===== Calc results drawer ===== */
.calc-results-drawer{position:fixed;top:96px;right:262px;height:calc(100vh - 200px);width:min(640px,calc(100vw - 540px));min-width:420px;min-height:260px;max-width:calc(100vw - 280px);max-height:calc(100vh - 120px);background:#fff;border:1px solid var(--border);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,.18);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:#f8fafc;border-bottom:1px solid var(--border);cursor:move;user-select:none}
.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:#fff;border-radius:5px;padding:5px 8px;font-size:11px;cursor:pointer;color:var(--text)}
.calc-mini-btn:hover{background:var(--blue2);border-color:#90bce8;color:var(--blue)}
.calc-drawer-body{padding:10px 12px;overflow-y:auto;flex:1;background:#fff}
.calc-summary-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-bottom:10px}
.calc-summary-cards.inputs{grid-template-columns:repeat(3,minmax(0,1fr))}
.calc-summary-card .big.compact{font-size:14px;line-height:1.25;word-break:break-word}
.segment-selection-top{background:#eef6ff;border-bottom:1px solid #c9ddf1}
.segment-selection-top .prop-row{display:block;margin-bottom:8px}
.segment-selection-top .prop-label{display:block;width:auto;margin-bottom:3px;font-weight:600;color:#334}
.segment-selection-top .prop-select,.segment-selection-top .prop-input{width:100%;display:block;min-height:30px}
.calc-summary-card{border:1px solid var(--border);border-radius:8px;background:#f8fafc;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-card{border:1px solid var(--border);border-radius:8px;margin-bottom:10px;background:#fff;overflow:hidden}
.calc-card-head{display:flex;align-items:center;gap:8px;background:#f5f6f8;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:15px;font-weight:800;color:var(--blue);white-space:nowrap}
.calc-card-body{padding:10px;font-size:12px;line-height:1.55}
.calc-kv{display:grid;grid-template-columns:150px 1fr;gap:5px 8px;margin-bottom:8px}
.calc-kv .k{font-weight:600;color:var(--text2)}
.calc-kv .v{color:var(--text)}
.calc-empty{border:1px dashed var(--border);border-radius:8px;padding:18px;text-align:center;color:var(--text2);font-size:12px;background:#fafafa}
.calc-action-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px;margin-bottom:10px}
.calc-btn{padding:7px 8px;border:1px solid var(--border);border-radius:6px;background:#fff;cursor:pointer;font-size:11px;text-align:left;color:var(--text)}
.calc-btn:hover{background:var(--blue2);border-color:#90bce8;color:var(--blue)}
.sparkline{width:100%;height:54px}

/* ===== Modals (templates / help / report) ===== */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(5,15,35,.55);z-index:8500;align-items:center;justify-content:center;backdrop-filter:blur(2px)}
.modal-overlay.open{display:flex}
.modal-box{width:min(940px,96vw);max-height:88vh;background:#fff;border:1px solid #c8d4e2;border-radius:12px;box-shadow:0 22px 60px rgba(0,0,0,.35);display:flex;flex-direction:column;overflow:hidden}
.modal-head{display:flex;align-items:center;gap:10px;padding:14px 18px;background:#f6f9fd;border-bottom:1px solid #d8e2ee}
.modal-title{font-weight:800;color:#17385f;font-size:15px;flex:1}
.modal-close{border:1px solid #ccd6e2;background:#fff;border-radius:6px;padding:6px 10px;cursor:pointer}
.modal-body{padding:14px 18px 18px;overflow-y:auto}
.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}

.main-layout:fullscreen{width:100vw;height:100vh;background:#f0f2f5}

/* ===== Editable engineering library ===== */
.library-modal-box{width:min(1120px,97vw);height:min(780px,92vh)}
.library-editor-tabs{display:flex;gap:4px;padding:8px 12px;background:#eef3f8;border-bottom:1px solid var(--border);flex-wrap:wrap}
.library-editor-tab{padding:7px 12px;border:1px solid var(--border);border-radius:6px;background:#fff;cursor:pointer;font-size:12px;font-weight:600;color:var(--text2)}
.library-editor-tab.active{background:var(--blue);border-color:var(--blue);color:#fff}
.library-toolbar{display:flex;align-items:center;gap:7px;margin-bottom:10px;flex-wrap:wrap}
.library-toolbar .spacer{flex:1}
.library-table-wrap{overflow:auto;border:1px solid var(--border);border-radius:8px;max-height:530px}
.library-table{width:100%;border-collapse:collapse;font-size:11px;min-width:820px}
.library-table th{position:sticky;top:0;background:#eaf0f7;color:#294663;z-index:2;text-align:left;padding:7px 6px;border-bottom:1px solid var(--border);white-space:nowrap}
.library-table td{padding:5px 6px;border-bottom:1px solid #edf0f3;vertical-align:middle}
.library-table input,.library-table select{width:100%;min-width:72px;padding:4px 5px;border:1px solid var(--border);border-radius:4px;font-size:11px;background:#fff}
.library-table input:focus,.library-table select:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 2px rgba(26,111,181,.12)}
.library-delete{border:1px solid #e3b4b1;background:#fff;color:var(--red);border-radius:5px;padding:4px 7px;cursor:pointer}
.library-delete:hover{background:#fbeceb}
.library-footer{display:flex;gap:8px;align-items:center;padding:10px 14px;border-top:1px solid var(--border);background:#f8fafc}
.library-footer .spacer{flex:1}
.library-primary{border:1px solid var(--blue);background:var(--blue);color:#fff;border-radius:6px;padding:7px 12px;cursor:pointer;font-weight:600}
.library-secondary{border:1px solid var(--border);background:#fff;color:var(--text);border-radius:6px;padding:7px 12px;cursor:pointer}
.library-note{font-size:11px;color:var(--text2);line-height:1.45;margin-bottom:10px}
.defaults-grid{display:grid;grid-template-columns:repeat(3,minmax(180px,1fr));gap:10px}
.default-card{border:1px solid var(--border);border-radius:7px;padding:9px;background:#fafbfd}
.default-card label{display:block;font-size:10px;text-transform:uppercase;color:var(--text2);font-weight:700;margin-bottom:4px}
.default-card input,.default-card select{width:100%;padding:6px;border:1px solid var(--border);border-radius:5px;background:#fff}
@media(max-width:850px){.defaults-grid{grid-template-columns:1fr 1fr}}

@media print{.ribbon,.left-panel,.right-panel,.canvas-area,.bottom-panel,#cr-appbar{display:none!important}}

/* ===== DARK MODE — audited theme override ===== */
:root{
  color-scheme:dark;
  --bg:#151d27;
  --bg2:#1b2531;
  --bg3:#243140;
  --border:#344557;
  --blue:#4ca6e8;
  --blue2:#203b52;
  --green:#59c77b;
  --amber:#e5a84b;
  --red:#f06b66;
  --text:#e7edf3;
  --text2:#aab7c4;
}
html,body{background:#0f151d;color:var(--text)}
body{scrollbar-color:#526779 #18222d}
*{scrollbar-color:#526779 #18222d}
*::-webkit-scrollbar{width:10px;height:10px}
*::-webkit-scrollbar-track{background:#18222d}
*::-webkit-scrollbar-thumb{background:#526779;border:2px solid #18222d;border-radius:8px}
*::-webkit-scrollbar-thumb:hover{background:#657d91}
#cr-appbar{background:linear-gradient(90deg,#08111f 0%,#10233a 58%,#163554 100%);border-bottom-color:#3887c5}
#cr-byline,#cr-version{color:#86a3bf}
#cr-title-sep{background:#34506b}
#cr-app-name{color:#d5e3f0}
.ribbon-tabs{background:#111a25}
.rtab{color:#9eafc0;border-right-color:#263544}
.rtab:hover{background:#1b2d3e;color:#dce9f4}
.ribbon,.left-panel,.right-panel,.bottom-panel{background:var(--bg)}
.ribbon-tools,.workspace{background:var(--bg)}
.rtool:hover,.ctool:hover,.prop-btn:hover,.calc-mini-btn:hover,.calc-btn:hover,.angle-preset:hover,.dirbtn:hover{background:#213244}
.rtool.active,.ctool.active,.angle-preset.active{background:#203f59;border-color:#4e91c4;color:#72bdf1}
.panel-header,.lib-cat,.bottom-tabs{background:var(--bg2);color:#c1ccd7}
.lib-search input,.prop-input,.prop-select,.default-card input,.default-card select,
.library-table input,.library-table select{background:#101821!important;color:var(--text)!important;border-color:var(--border)!important}
input::placeholder,textarea::placeholder{color:#718293;opacity:1}
.prop-input[readonly]{background:#202a35!important;color:#9dacba!important}
.lib-item{border-bottom-color:#202b37}
.lib-item:hover,.lib-item.active{background:#20384c}
.canvas-area{background:#111923}
#three-container{background:#101722}
.canvas-toolbar,.view-toggle{background:#17222d;border-color:#3a4b5d;box-shadow:0 3px 12px rgba(0,0,0,.45)}
.ctool,.vtbtn{color:#c3ced8}
.vtbtn{border-right-color:#3a4b5d}
.nav-hint{background:#17222d;border-color:#3a4b5d;color:#b6c3cf;box-shadow:0 3px 12px rgba(0,0,0,.4)}
.grid-coords{background:rgba(17,25,35,.86);color:#aebdca;border:1px solid rgba(77,99,119,.7)}
.view3d-badge{background:rgba(36,65,88,.9);border-color:#4b84ac;color:#c0ccd6}
.right-panel,.left-panel{box-shadow:0 0 18px rgba(0,0,0,.14)}
.prop-group{border-bottom-color:#263440}
.prop-btn,.dirbtn,.angle-preset,.calc-mini-btn,.calc-btn,.library-secondary,.modal-close{background:#18232e;color:var(--text);border-color:var(--border)}
.prop-btn.danger,.library-delete{background:#241b1d;color:#ff8882;border-color:#704043}
.prop-btn.danger:hover,.library-delete:hover{background:#3b2225}
.segment-selection-top{background:#1a3041;border-bottom-color:#38536a}
.segment-selection-top .prop-label{color:#c3d3df}
.bottom-content{background:#131c25}
.issue-item,.wf-step{border-bottom-color:#263440}
.status-card,.calc-summary-card,.default-card{background:#1b2733;border-color:#34485b}
.pill.ok{background:#183927;color:#75dd96}
.pill.warn{background:#45361c;color:#f2c46d}
.pill.err{background:#482426;color:#ff908b}
.calc-results-drawer{background:#141e28;border-color:#3a4c5f;box-shadow:0 12px 40px rgba(0,0,0,.55)}
.calc-drawer-head,.library-footer{background:#1b2733;border-color:#394b5d}
.calc-drawer-body{background:#121b24}
.calc-card{background:#17222d;border-color:#35485a}
.calc-card-head{background:#202d39;border-color:#35485a}
.calc-empty{background:#17222d;color:#aebac5}
.modal-overlay{background:rgba(0,5,12,.74)}
.modal-box{background:#141e28;border-color:#405267;box-shadow:0 24px 70px rgba(0,0,0,.65)}
.modal-head{background:#1b2937;border-bottom-color:#3b4e61}
.modal-title{color:#d8e7f3}
.modal-body{background:#141e28;color:var(--text)}
.library-editor-tabs{background:#192633;border-bottom-color:#394b5e}
.library-editor-tab{background:#18232e;color:#b7c4cf;border-color:#3b4c5d}
.library-table-wrap{border-color:#3a4c5e}
.library-table th{background:#223244;color:#c9d9e6;border-bottom-color:#43566a}
.library-table td{border-bottom-color:#293845}
.library-note{color:#aebbc7}
.report-page{background:#17222d;color:#e4eaf0}
.report-page h1,.report-page h2{color:#78bdf0}
.report-page h2{border-bottom-color:#425467}
.report-page th,.report-page td{border-color:#536577}
.report-page th{background:#253545}
.report-note{background:#3c301b;color:#f1dfb8}
.no-sel i{color:#647688!important}
.main-layout:fullscreen{background:#0f151d}
select option{background:#101821;color:#e7edf3}
button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid #58aee9;outline-offset:1px}
@media print{
  :root{color-scheme:light}
  .report-page{background:#fff!important;color:#111!important}
  .report-page h1,.report-page h2{color:#1a3f67!important}
  .report-page th{background:#eef3f8!important}
  .report-note{background:#fff8e8!important;color:#111!important}
}


/* ===== INDUSTRY VALIDATION CENTER ===== */
.validation-modal-box{width:min(1240px,98vw);height:min(860px,94vh)}
.validation-summary{display:grid;grid-template-columns:repeat(5,minmax(120px,1fr));gap:8px;margin-bottom:12px}
.validation-kpi{border:1px solid var(--border);border-radius:8px;background:var(--bg2);padding:9px 10px}
.validation-kpi .v{font-size:19px;font-weight:800;color:var(--blue)}
.validation-kpi .l{font-size:10px;color:var(--text2);text-transform:uppercase;letter-spacing:.4px;margin-top:3px}
.validation-toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.validation-table-wrap{border:1px solid var(--border);border-radius:8px;overflow:auto;max-height:510px}
.validation-table{width:100%;border-collapse:collapse;font-size:11px;min-width:1100px}
.validation-table th{position:sticky;top:0;z-index:2;background:var(--bg3);color:var(--text);text-align:left;padding:7px;border-bottom:1px solid var(--border)}
.validation-table td{padding:6px 7px;border-bottom:1px solid var(--border);vertical-align:top}
.validation-table tr.val-pass td:first-child{box-shadow:inset 3px 0 0 var(--green)}
.validation-table tr.val-fail td:first-child{box-shadow:inset 3px 0 0 var(--red)}
.validation-pass{font-weight:800;color:var(--green)}
.validation-fail{font-weight:800;color:var(--red)}
.validation-info{font-weight:700;color:var(--amber)}
.validation-ref{font-size:10px;color:var(--text2);line-height:1.35}
.validation-section{border:1px solid var(--border);border-radius:8px;background:var(--bg2);padding:10px;margin:10px 0}
.validation-section h3{font-size:12px;margin:0 0 6px;color:var(--text)}
.validation-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(330px,1fr));gap:10px;margin:10px 0 14px}
.validation-case-card{border:1px solid var(--border);border-radius:9px;background:var(--bg2);overflow:hidden}
.validation-case-head{display:flex;align-items:center;gap:7px;padding:8px 9px;border-bottom:1px solid var(--border);background:var(--bg3)}
.validation-case-id{font-weight:800;color:var(--blue);font-size:12px}
.validation-case-name{font-weight:700;font-size:11px;flex:1;color:var(--text)}
.validation-case-body{display:grid;grid-template-columns:150px 1fr;gap:9px;padding:9px}
.validation-drawing{height:122px;border:1px solid var(--border);border-radius:7px;background:#0f1822;display:flex;align-items:center;justify-content:center;overflow:hidden}
.validation-drawing svg{width:100%;height:100%;display:block}
.validation-case-data{font-size:10px;line-height:1.45;color:var(--text2);min-width:0}
.validation-case-data b{color:var(--text)}
.validation-case-result{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;margin-top:6px}
.validation-case-result div{border:1px solid var(--border);border-radius:5px;padding:4px 5px;background:var(--bg)}
.southwire-compare{display:grid;grid-template-columns:repeat(2,minmax(320px,1fr));gap:10px;margin:10px 0 14px}
.southwire-card{border:1px solid var(--border);border-radius:9px;background:var(--panel);padding:10px 11px;box-shadow:0 1px 2px rgba(0,0,0,.08)}
.southwire-head{display:flex;align-items:center;gap:8px;margin-bottom:7px}.southwire-head .id{font-weight:700;color:#69bff3;min-width:50px}.southwire-head .name{font-weight:600;flex:1;color:var(--text)}
.southwire-eq{font-family:Consolas,monospace;font-size:11px;background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:6px 7px;margin:6px 0;color:var(--text)}
.southwire-inputs{font-size:11px;line-height:1.45;color:var(--text2);margin:4px 0 7px}
.southwire-values{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}.southwire-values>div{background:var(--bg);border:1px solid var(--border);border-radius:6px;padding:5px 6px;min-height:46px;font-size:10px;color:var(--text2)}.southwire-values b{display:block;color:var(--text);font-size:11px;margin-top:2px;word-break:break-word}
@media(max-width:980px){.southwire-compare{grid-template-columns:1fr}.southwire-values{grid-template-columns:repeat(2,minmax(0,1fr))}}
.validation-case-actions{padding:0 9px 9px;display:flex;gap:6px;align-items:center}
.validation-case-actions .prop-btn{width:auto;margin:0;padding:5px 7px}
.validation-drawing-note{font-size:9px;color:var(--text2)}
.validation-all-note{font-size:10px;color:var(--text2);margin-left:auto}
@media(max-width:720px){.validation-case-body{grid-template-columns:1fr}.validation-drawing{height:150px}}
@media(max-width:900px){.validation-summary{grid-template-columns:repeat(2,1fr)}}


/* ===== DARK RESULTS / VALIDATION VISIBILITY OVERRIDE ===== */
.calc-results-drawer,
.calc-drawer-body,
.calc-card,
.calc-card-body,
.calc-empty,
.validation-modal-box,
.validation-section,
.validation-case-card,
.validation-case-result div,
.southwire-card,
.southwire-eq,
.southwire-values>div,
.validation-table-wrap,
.validation-table td,
.modal-body{
  background:#121b24!important;
  color:#e7edf3!important;
  border-color:#3b4d60!important;
}
.calc-drawer-head,
.calc-card-head,
.validation-case-head,
.validation-table th,
.modal-head{
  background:#1d2a36!important;
  color:#e7edf3!important;
  border-color:#3b4d60!important;
}
.calc-drawer-title,
.calc-card-title,
.calc-kv .v,
.calc-card-body,
.validation-case-name,
.validation-case-data,
.validation-case-data b,
.validation-section h3,
.southwire-head .name,
.southwire-eq,
.southwire-values b,
.validation-table td,
.validation-table th{
  color:#e7edf3!important;
}
.calc-kv .k,
.calc-summary-card .small,
.validation-ref,
.validation-case-data,
.validation-drawing-note,
.southwire-inputs,
.southwire-values>div{
  color:#aab7c4!important;
}
.calc-summary-card,
.status-card,
.segment-selection-top,
.validation-kpi{
  background:#1b2733!important;
  color:#e7edf3!important;
  border-color:#3b4d60!important;
}
.calc-summary-card .big,
.validation-kpi .v,
.calc-card-result,
.southwire-head .id{
  color:#69bff3!important;
}
.calc-results-drawer input,
.calc-results-drawer select,
.calc-results-drawer textarea,
.validation-modal-box input,
.validation-modal-box select,
.validation-modal-box textarea{
  background:#0f1822!important;
  color:#e7edf3!important;
  border-color:#46596d!important;
}
.calc-results-drawer input[readonly],
.validation-modal-box input[readonly]{
  background:#1b2733!important;
  color:#d6e0e9!important;
}
.calc-results-drawer button,
.validation-modal-box button,
.southwire-card button{
  background:#1a2a38!important;
  color:#e7edf3!important;
  border-color:#46596d!important;
}
.calc-results-drawer button:hover,
.validation-modal-box button:hover,
.southwire-card button:hover{
  background:#244158!important;
  color:#ffffff!important;
}
.validation-table tr:nth-child(even) td{background:#16212b!important}
.validation-table tr:hover td{background:#203243!important}
.southwire-card{box-shadow:0 4px 14px rgba(0,0,0,.28)!important}
.southwire-values>div{min-height:50px}
.southwire-values b{font-size:12px!important;line-height:1.25}
.validation-pass{color:#75dd96!important}
.validation-fail{color:#ff908b!important}
.validation-info{color:#f2c46d!important}


/* Results + Validation high-contrast audit override — scoped; print report intentionally excluded */
.calc-results-drawer h1,
.calc-results-drawer h2,
.calc-results-drawer h3,
.calc-results-drawer h4,
.calc-results-drawer h5,
.calc-results-drawer h6,
.validation-modal-box h1,
.validation-modal-box h2,
.validation-modal-box h3,
.validation-modal-box h4,
.validation-modal-box h5,
.validation-modal-box h6,
.calc-results-drawer .panel-header,
.validation-modal-box .panel-header,
.calc-results-drawer .prop-group-label,
.validation-modal-box .prop-group-label,
.calc-results-drawer .calc-card-head,
.validation-modal-box .calc-card-head,
.validation-modal-box .validation-case-head,
.validation-modal-box .southwire-head,
.validation-modal-box .modal-head,
.validation-modal-box thead,
.validation-modal-box thead tr,
.validation-modal-box thead th,
.calc-results-drawer thead,
.calc-results-drawer thead tr,
.calc-results-drawer thead th {
  background:#1d2a36!important;
  background-color:#1d2a36!important;
  color:#f3f7fb!important;
  border-color:#46596d!important;
  text-shadow:none!important;
}
.calc-results-drawer h1 *,
.calc-results-drawer h2 *,
.calc-results-drawer h3 *,
.calc-results-drawer h4 *,
.calc-results-drawer h5 *,
.calc-results-drawer h6 *,
.validation-modal-box h1 *,
.validation-modal-box h2 *,
.validation-modal-box h3 *,
.validation-modal-box h4 *,
.validation-modal-box h5 *,
.validation-modal-box h6 *,
.calc-results-drawer .calc-card-head *,
.validation-modal-box .calc-card-head *,
.validation-modal-box .validation-case-head *,
.validation-modal-box .southwire-head *,
.validation-modal-box .modal-head * {
  color:inherit!important;
}
/* Defeat generated light/white inline result surfaces. */
.calc-results-drawer [style*="background:#fff"],
.calc-results-drawer [style*="background: #fff"],
.calc-results-drawer [style*="background:white"],
.calc-results-drawer [style*="background: white"],
.calc-results-drawer [style*="background:#f5f6f8"],
.calc-results-drawer [style*="background: #f5f6f8"],
.calc-results-drawer [style*="background:#eceef1"],
.calc-results-drawer [style*="background: #eceef1"],
.validation-modal-box [style*="background:#fff"],
.validation-modal-box [style*="background: #fff"],
.validation-modal-box [style*="background:white"],
.validation-modal-box [style*="background: white"],
.validation-modal-box [style*="background:#f5f6f8"],
.validation-modal-box [style*="background: #f5f6f8"],
.validation-modal-box [style*="background:#eceef1"],
.validation-modal-box [style*="background: #eceef1"] {
  background:#121b24!important;
  background-color:#121b24!important;
  color:#e7edf3!important;
  border-color:#46596d!important;
}
.calc-results-drawer [style*="color:#111"],
.calc-results-drawer [style*="color: #111"],
.calc-results-drawer [style*="color:#333"],
.calc-results-drawer [style*="color: #333"],
.calc-results-drawer [style*="color:#555"],
.calc-results-drawer [style*="color: #555"],
.validation-modal-box [style*="color:#111"],
.validation-modal-box [style*="color: #111"],
.validation-modal-box [style*="color:#333"],
.validation-modal-box [style*="color: #333"],
.validation-modal-box [style*="color:#555"],
.validation-modal-box [style*="color: #555"] {
  color:#e7edf3!important;
}
/* Heading bars and labels must never inherit white text on a white surface. */
.calc-results-drawer .calc-card-title,
.calc-results-drawer .calc-drawer-title,
.validation-modal-box .validation-section h3,
.validation-modal-box .validation-case-name,
.validation-modal-box .southwire-head .name,
.validation-modal-box .modal-head,
.validation-modal-box th {
  color:#f3f7fb!important;
}


/* Final forced dark-theme override for all Results / Validation content */
.calc-results-drawer,
.calc-results-drawer .calc-drawer-head,
.calc-results-drawer .calc-drawer-body,
.calc-results-drawer .calc-summary-card,
.calc-results-drawer .calc-card,
.calc-results-drawer .calc-card-head,
.calc-results-drawer .calc-empty,
.calc-results-drawer .calc-kv,
.calc-results-drawer .formula,
.validation-modal-box,
.validation-modal-box .modal-head,
.validation-modal-box .modal-body,
.validation-modal-box .validation-section,
.validation-modal-box .validation-case,
.validation-modal-box .validation-case-head,
.validation-modal-box .southwire-card,
.validation-modal-box .southwire-head,
.validation-modal-box .southwire-values > div,
.validation-modal-box .validation-table,
.validation-modal-box .validation-table thead,
.validation-modal-box .validation-table tbody tr,
.validation-modal-box .validation-table th,
.validation-modal-box .validation-table td {
  background:#121b24!important;
  background-color:#121b24!important;
  color:#e7edf3!important;
  border-color:#46596d!important;
}
.calc-results-drawer .calc-card-result,
.calc-results-drawer .calc-card-title,
.calc-results-drawer .calc-drawer-title,
.validation-modal-box .validation-case-name,
.validation-modal-box .southwire-head .name,
.validation-modal-box .validation-section h3,
.validation-modal-box .validation-table th,
.validation-modal-box .modal-head,
.validation-modal-box b,
.validation-modal-box strong { color:#f3f7fb!important; }
.calc-results-drawer .calc-label,
.calc-results-drawer .calc-value,
.calc-results-drawer .muted,
.validation-modal-box .muted,
.validation-modal-box small,
.validation-modal-box .note { color:#d4dee8!important; }
.calc-results-drawer .validation-pass,
.validation-modal-box .validation-pass { color:#75dd96!important; }
.calc-results-drawer .validation-fail,
.validation-modal-box .validation-fail { color:#ff908b!important; }
.calc-results-drawer .validation-info,
.validation-modal-box .validation-info { color:#f2c46d!important; }

/* Catch generated inline light surfaces that appear inside Results / Validation */
.calc-results-drawer [style*="background:#f8fafc"],
.calc-results-drawer [style*="background: #f8fafc"],
.calc-results-drawer [style*="background:#fafafa"],
.calc-results-drawer [style*="background: #fafafa"],
.calc-results-drawer [style*="background:#f6f9fd"],
.calc-results-drawer [style*="background: #f6f9fd"],
.calc-results-drawer [style*="background:#f4f8fc"],
.calc-results-drawer [style*="background: #f4f8fc"],
.calc-results-drawer [style*="background:#fff4e6"],
.calc-results-drawer [style*="background: #fff4e6"],
.calc-results-drawer [style*="background:#fff8e8"],
.calc-results-drawer [style*="background: #fff8e8"],
.calc-results-drawer [style*="background:#eaf0f7"],
.calc-results-drawer [style*="background: #eaf0f7"],
.calc-results-drawer [style*="background:#f0f4f8"],
.calc-results-drawer [style*="background: #f0f4f8"],
.validation-modal-box [style*="background:#f8fafc"],
.validation-modal-box [style*="background: #f8fafc"],
.validation-modal-box [style*="background:#fafafa"],
.validation-modal-box [style*="background: #fafafa"],
.validation-modal-box [style*="background:#f6f9fd"],
.validation-modal-box [style*="background: #f6f9fd"],
.validation-modal-box [style*="background:#f4f8fc"],
.validation-modal-box [style*="background: #f4f8fc"],
.validation-modal-box [style*="background:#fff4e6"],
.validation-modal-box [style*="background: #fff4e6"],
.validation-modal-box [style*="background:#fff8e8"],
.validation-modal-box [style*="background: #fff8e8"],
.validation-modal-box [style*="background:#eaf0f7"],
.validation-modal-box [style*="background: #eaf0f7"],
.validation-modal-box [style*="background:#f0f4f8"],
.validation-modal-box [style*="background: #f0f4f8"] {
  background:#121b24!important;
  background-color:#121b24!important;
  color:#e7edf3!important;
  border-color:#46596d!important;
}
.calc-results-drawer [style*="color:#1a1a1a"],
.calc-results-drawer [style*="color: #1a1a1a"],
.calc-results-drawer [style*="color:#1a3a5c"],
.calc-results-drawer [style*="color: #1a3a5c"],
.calc-results-drawer [style*="color:#294663"],
.calc-results-drawer [style*="color: #294663"],
.validation-modal-box [style*="color:#1a1a1a"],
.validation-modal-box [style*="color: #1a1a1a"],
.validation-modal-box [style*="color:#1a3a5c"],
.validation-modal-box [style*="color: #1a3a5c"],
.validation-modal-box [style*="color:#294663"],
.validation-modal-box [style*="color: #294663"] {
  color:#e7edf3!important;
}


/* Final direction-control dark-theme fix inside Results */
.calc-results-drawer .calc-card .prop-btn,
.calc-results-drawer .calc-card button.prop-btn,
.calc-results-drawer [onclick*="setRouteDirView"] {
  background:#18232e!important;
  background-color:#18232e!important;
  color:#f3f7fb!important;
  border-color:#46596d!important;
  box-shadow:none!important;
}
.calc-results-drawer .calc-card .prop-btn:hover,
.calc-results-drawer .calc-card button.prop-btn:hover,
.calc-results-drawer [onclick*="setRouteDirView"]:hover {
  background:#244158!important;
  background-color:#244158!important;
  color:#ffffff!important;
}
.calc-results-drawer [onclick*="setRouteDirView"][style*="background:var(--blue)"],
.calc-results-drawer [onclick*="setRouteDirView"][style*="background: var(--blue)"] {
  background:#1a6fb5!important;
  background-color:#1a6fb5!important;
  color:#ffffff!important;
  border-color:#2a85d0!important;
}


/* Pull Direction Comparison: force dark rows in Results */
.calc-results-drawer table tr[style*="background:#eef6ff"],
.calc-results-drawer table tr[style*="background: #eef6ff"]{
  background:#203243!important;
  background-color:#203243!important;
  color:#f3f7fb!important;
}
.calc-results-drawer table tr td{color:#f3f7fb;}