*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#eceeff;
  --surface:rgba(255,255,255,0.55);
  --border:rgba(255,255,255,0.6);
  --border-dark:rgba(0,0,0,0.08);
  --green:#10B981;--cyan:#06b6d4;--purple:#7C3AED;--amber:#F59E0B;--blue:#1A56DB;--rose:#F43F5E;
  --text:#0f0f1a;--muted:#475569;
  --font-display:var(--lf-font-display);
  --font-body:var(--lf-font-body);
  --font-mono:'JetBrains Mono',monospace;
}
body{margin:0;background-color:var(--bg);color:var(--text);font-family:var(--font-body);min-height:100vh}
    
    /* LAYOUT */
    .page{padding-top:var(--lf-main-padding-top);max-width:1300px;margin:0 auto;padding-left:2rem;padding-right:2rem;position:relative;z-index:10}
    .page-header{padding:1.75rem 0 1.25rem;display:flex;align-items:flex-start;justify-content:space-between;flex-wrap:wrap;gap:1rem}
    .breadcrumb{display:flex;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.65rem;color:var(--muted);margin-bottom:.6rem}
    .breadcrumb .badge{background:rgba(26,86,219,.15);border:1px solid rgba(26,86,219,.3);color:var(--blue);padding:.15rem .5rem;border-radius:999px}
    .page-header h1{font-family:var(--font-display);font-size:2.2rem;color:var(--text);margin-bottom:.35rem;letter-spacing:-0.03em}
    .page-header p{font-size:.9rem;color:var(--muted);max-width:550px;line-height:1.6}
    
    .lab-grid{display:grid;grid-template-columns:360px 1fr;gap:1.5rem;padding-bottom:3rem}
    
    /* PANEL */
    .panel{background:var(--surface);backdrop-filter:blur(20px);border:1px solid var(--border);box-shadow:0 8px 32px rgba(0,0,0,0.03);border-radius:16px;padding:1.5rem}
    .panel-label{font-family:var(--font-mono);font-size:.65rem;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;margin-bottom:1.25rem;font-weight:700}
    
    /* TOGGLES */
    .toggle-group{display:flex;gap:.5rem;background:rgba(0,0,0,.04);border:1px solid var(--border-dark);border-radius:10px;padding:.3rem;margin-bottom:1.5rem}
    .toggle-btn{flex:1;padding:.6rem;border-radius:7px;border:none;background:none;color:var(--muted);font-family:var(--font-mono);font-size:.78rem;cursor:pointer;transition:all .2s;font-weight:600}
    .toggle-btn.active{background:var(--blue);color:#fff;box-shadow:0 4px 12px rgba(26,86,219,.3)}
    
    /* SWITCH */
    .switch-row{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;background:rgba(16,185,129,.1);border:1px solid rgba(16,185,129,.3);border-radius:10px;margin-bottom:1.5rem}
    .switch-label{font-weight:600;color:#059669;font-size:.9rem}
    .switch-input{appearance:none;width:40px;height:24px;background:rgba(0,0,0,.2);border-radius:12px;position:relative;cursor:pointer;outline:none;transition:background .3s}
    .switch-input::after{content:'';position:absolute;top:2px;left:2px;width:20px;height:20px;background:#fff;border-radius:50%;transition:transform .3s;box-shadow:0 2px 4px rgba(0,0,0,.2)}
    .switch-input:checked{background:#10B981}
    .switch-input:checked::after{transform:translateX(16px)}

    /* SLIDERS */
    .slider-wrap{margin-bottom:1.25rem}
    .slider-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}
    .slider-title{font-size:.8rem;font-weight:600;color:var(--text)}
    .slider-val{font-family:var(--font-mono);font-size:1rem;font-weight:700;color:var(--text)}
    input[type=range]{width:100%;height:6px;border-radius:3px;outline:none;-webkit-appearance:none;background:rgba(0,0,0,.1)}
    input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--blue);box-shadow:0 0 8px rgba(26,86,219,.4);border:2px solid #fff;cursor:pointer}
    .slider-range{display:flex;justify-content:space-between;font-family:var(--font-mono);font-size:.6rem;color:var(--muted);margin-top:.4rem}
    
    /* METERS */
    .meter-grid{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;margin-bottom:1.5rem}
    .meter-card{background:rgba(255,255,255,0.7);border:1px solid var(--border);border-radius:10px;padding:1rem;box-shadow:0 2px 12px rgba(0,0,0,0.02)}
    .meter-key{font-family:var(--font-mono);font-size:.65rem;color:var(--muted);margin-bottom:.4rem;font-weight:700}
    .meter-val{font-family:var(--font-mono);font-size:1.3rem;font-weight:700}

    /* CHART AREA */
    .chart-panel{display:flex;flex-direction:column;gap:1.5rem}
    .chart-box{height:250px;position:relative;background:rgba(255,255,255,0.4);border-radius:12px;padding:10px;border:1px solid var(--border)}
    
    @media(max-width:900px){.lab-grid{grid-template-columns:1fr}}

/* ═══════════ WIRED SANDBOX STYLES ═══════════ */
:root { --rose:#F43F5E; }

/* Mode toggle */
.mode-toggle{display:flex;gap:.4rem;background:rgba(0,0,0,.04);border:1px solid rgba(0,0,0,.08);border-radius:10px;padding:.3rem;margin-bottom:1.5rem;max-width:340px}
.mode-btn{flex:1;padding:.55rem;border-radius:7px;border:none;background:none;color:var(--muted);font-family:var(--font-mono);font-size:.78rem;cursor:pointer;transition:all .2s;font-weight:700}
.mode-btn.active{background:var(--blue);color:#fff;box-shadow:0 4px 12px rgba(26,86,219,.35)}

/* Dual grid */
.sandbox-layout{display:grid;grid-template-columns:260px 1fr;gap:1.5rem;padding-bottom:3rem}
.right-col{display:flex;flex-direction:column;gap:1rem}

/* Live circuit panel */
.circuit-panel{background:#0f172a;border-radius:16px;border:2px solid #1e293b;overflow:hidden;position:relative}
.circuit-label{position:absolute;top:12px;left:16px;font-family:var(--font-mono);font-size:.6rem;color:#475569;text-transform:uppercase;letter-spacing:.1em;font-weight:700}

/* Palette */
.palette-wrap{display:flex;flex-direction:column;gap:1rem}
.palette-panel{background:rgba(30,41,59,.5);border:1px solid rgba(51,65,85,.5);border-radius:12px;padding:1rem}
.palette-title{font-family:var(--font-mono);font-size:.8rem;color:#f1f5f9;font-weight:700;margin-bottom:.4rem}
.palette-sub{font-size:.7rem;color:var(--muted);margin-bottom:.75rem}
.components-grid{display:grid;grid-template-columns:1fr 1fr;gap:.6rem}
.component-item{display:flex;flex-direction:column;align-items:center;gap:.35rem;padding:.65rem .4rem;background:rgba(15,23,42,.5);border:1px solid rgba(51,65,85,.3);border-radius:8px;cursor:grab;transition:all .2s;user-select:none}
.component-item:hover{background:rgba(26,86,219,.12);border-color:rgba(26,86,219,.35);transform:translateY(-2px)}
.component-item:active{cursor:grabbing;transform:scale(.95)}
.component-item span{font-family:var(--font-mono);font-size:.62rem;color:#94a3b8;text-align:center}

/* Wire guide */
.wire-guide{background:rgba(15,23,42,.4);border:1px solid rgba(51,65,85,.3);border-radius:8px;padding:.75rem;margin-top:.5rem}
.wire-guide h4{font-family:var(--font-mono);font-size:.72rem;color:#e2e8f0;margin-bottom:.5rem}
.wire-guide ol{font-size:.68rem;color:var(--muted);line-height:1.6;padding-left:1.1rem}
.wire-guide ol li{margin-bottom:.2rem}
.hint-chips{display:flex;gap:.4rem;margin-top:.5rem;flex-wrap:wrap}
.hint-chip{font-size:.6rem;padding:.15rem .45rem;border-radius:4px;font-family:var(--font-mono)}

/* Canvas */
.canvas-wrap{display:flex;flex-direction:column;gap:1rem}
.canvas-header{display:flex;justify-content:space-between;align-items:center}
.canvas-header h3{font-family:var(--font-mono);font-size:.85rem;color:#f1f5f9;font-weight:700}
.canvas-btns{display:flex;gap:.5rem;flex-wrap:wrap}
.cbtn{padding:.45rem .8rem;border-radius:6px;font-family:var(--font-mono);font-size:.7rem;font-weight:700;cursor:pointer;transition:all .2s;border:1px solid}
.cbtn-danger{background:rgba(244,63,94,.1);border-color:rgba(244,63,94,.3);color:#f87171}
.cbtn-danger:hover{background:rgba(244,63,94,.2)}
.cbtn-run{background:rgba(16,185,129,.15);border-color:rgba(16,185,129,.35);color:#34d399}
.cbtn-run:hover{background:rgba(16,185,129,.25)}
.cbtn-tpl{background:rgba(26,86,219,.1);border-color:rgba(26,86,219,.3);color:#a78bfa;font-size:.65rem}
.cbtn-tpl:hover{background:rgba(26,86,219,.2)}

#circuit-canvas-5{width:100%;height:400px;background:#0f172a;border-radius:12px;border:1px solid #1e293b;cursor:crosshair;display:block}

.readings-panel{background:rgba(30,41,59,.5);border:1px solid rgba(51,65,85,.5);border-radius:12px;padding:1rem}
.readings-title{font-family:var(--font-mono);font-size:.8rem;color:#f1f5f9;font-weight:700;margin-bottom:.75rem}
#circuit-readings-5{min-height:60px}