:root{--bg-primary:#f8fafc;--bg-secondary:#f1f5f9;--text-primary:#0f172a;--text-secondary:#475569;--accent-primary:#3b82f6;--accent-secondary:#8b5cf6;--accent-gradient:linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));--glass-bg:#ffffffb3;--glass-border:#0000001a;--glass-shadow:0 8px 32px 0 #0000001a;--success:#10b981;--warning:#f59e0b;--danger:#ef4444}:root[data-theme=dark]{--bg-primary:#0f172a;--bg-secondary:#1e293b;--text-primary:#f8fafc;--text-secondary:#94a3b8;--glass-bg:#1e293bb3;--glass-border:#ffffff1a;--glass-shadow:0 8px 32px 0 #0000005e}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg-primary:#0f172a;--bg-secondary:#1e293b;--text-primary:#f8fafc;--text-secondary:#94a3b8;--glass-bg:#1e293bb3;--glass-border:#ffffff1a;--glass-shadow:0 8px 32px 0 #0000005e}}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);flex-direction:column;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;transition:background-color .3s,color .3s;display:flex}.glass-panel{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);box-shadow:var(--glass-shadow);border-radius:16px;padding:1.5rem;transition:transform .3s,box-shadow .3s,background .3s,border-color .3s}.glass-panel:hover{transform:translateY(-2px);box-shadow:0 12px 40px #00000026}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .glass-panel:hover{box-shadow:0 12px 40px #00000073}}:root[data-theme=dark] .glass-panel:hover{box-shadow:0 12px 40px #00000073}.btn{background:var(--accent-gradient);color:#fff;cursor:pointer;border:none;border-radius:8px;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;transition:all .3s;box-shadow:0 4px 15px #3b82f666}.btn:hover{transform:scale(1.05);box-shadow:0 6px 20px #3b82f699}.btn:active{transform:scale(.98)}.selector-panel{flex-direction:column;gap:1.5rem;display:flex}.selector-category h3{color:var(--text-secondary);margin-bottom:.75rem;font-size:1.1rem}.selector-options{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;display:grid}.selector-card{border:1px solid var(--glass-border);cursor:pointer;background:#0f172a99;border-radius:12px;padding:1rem;transition:all .2s;position:relative;overflow:hidden}.selector-card:hover{background:#1e293bcc;border-color:#fff3}.selector-card.selected{border-color:var(--card-color,var(--accent-primary));background:#1e293be6;box-shadow:0 0 15px #0003}.selector-card.selected:before{content:"";background:var(--card-color,var(--accent-primary));width:4px;height:100%;position:absolute;top:0;left:0}.card-header{align-items:center;gap:.5rem;display:flex}.color-indicator{background-color:var(--card-color,#ccc);border-radius:50%;width:12px;height:12px}.selector-card h4{color:var(--text-primary);font-size:1rem}.card-desc{color:var(--text-secondary);margin-top:.75rem;font-size:.85rem;line-height:1.4;animation:.3s fadeIn}@keyframes fadeIn{0%{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}.simulation-panel{flex-direction:column;gap:1.5rem;display:flex}.simulation-header{justify-content:space-between;align-items:center;display:flex}.controls{gap:1rem;display:flex}.control-btn{background:var(--bg-secondary);border:1px solid var(--glass-border);color:var(--text-primary);box-shadow:none;font-weight:500}.control-btn:hover{background:#ffffff1a;box-shadow:0 4px 15px #ffffff1a}.control-btn.active{background:var(--accent-gradient);border:none}.battery-cell{border:2px solid var(--glass-border);background:#0f172a80;border-radius:12px;height:300px;display:flex;position:relative;overflow:hidden;box-shadow:inset 0 0 20px #00000080}.electrode{background:repeating-linear-gradient(45deg,#ffffff0d,#ffffff0d 10px,#0000 10px 20px);border-left:6px solid;border-right:6px solid;flex:1;justify-content:center;align-items:center;display:flex}.electrode-label{text-align:center;text-shadow:0 2px 4px #000c;z-index:2;font-size:1.25rem;font-weight:700}.middle-layer{flex:1;justify-content:center;align-items:center;transition:background-color .5s;display:flex;position:relative}.separator-layer{border-left:2px dashed;border-right:2px dashed;justify-content:center;align-items:center;width:10px;display:flex;position:absolute;top:0;bottom:0}.separator-layer span{white-space:nowrap;background:#00000080;border-radius:4px;padding:2px 6px;font-size:.8rem;font-weight:600;position:absolute;top:10px}.ions-container{pointer-events:none;position:absolute;inset:0}.ion{color:#fff;opacity:0;background:radial-gradient(circle,#fcd34d 0%,#d97706 100%);border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:.6rem;font-weight:700;display:flex;position:absolute;left:50%;transform:translate(-50%);box-shadow:0 0 10px #f59e0bcc}.ion.idle{opacity:.7}.ion.charging{animation:2s linear infinite moveLeft}.ion.discharging{animation:2s linear infinite moveRight}@keyframes moveLeft{0%{opacity:0;left:80%;transform:scale(.5)}10%{opacity:1;transform:scale(1)}90%{opacity:1;transform:scale(1)}to{opacity:0;left:20%;transform:scale(.5)}}@keyframes moveRight{0%{opacity:0;left:20%;transform:scale(.5)}10%{opacity:1;transform:scale(1)}90%{opacity:1;transform:scale(1)}to{opacity:0;left:80%;transform:scale(.5)}}.status-text{text-align:center;color:var(--text-secondary);font-size:.95rem;font-style:italic}.metrics-panel{flex-direction:column;gap:1.5rem;display:flex}.metrics-container{flex-direction:column;gap:1.25rem;display:flex}.metric-row{flex-direction:column;gap:.5rem;display:flex}.metric-label{color:var(--text-primary);justify-content:space-between;font-weight:500;display:flex}.metric-value{color:var(--text-secondary);font-family:monospace;font-size:1.1rem}.metric-bar-bg{background:#0f172acc;border-radius:6px;height:12px;overflow:hidden;box-shadow:inset 0 1px 3px #00000080}.metric-bar-fill{border-radius:6px;height:100%;transition:width 1s cubic-bezier(.4,0,.2,1)}.overall-score{justify-content:center;align-items:center;margin-top:1rem;display:flex}.score-circle{background:conic-gradient(from 180deg, var(--bg-secondary), var(--bg-primary));border:4px solid var(--accent-primary);border-radius:50%;flex-direction:column;justify-content:center;align-items:center;width:120px;height:120px;display:flex;box-shadow:0 0 20px #3b82f666}.score-number{color:var(--text-primary);font-size:2.5rem;font-weight:800;line-height:1}.score-text{color:var(--text-secondary);margin-top:.5rem;font-size:.85rem}.theme-toggle-container{justify-content:center;align-items:center;gap:.75rem;margin-top:1rem;display:flex}.theme-label{color:var(--text-secondary);font-size:.9rem;font-weight:500}.theme-select{background-color:var(--bg-secondary);color:var(--text-primary);border:1px solid var(--glass-border);cursor:pointer;border-radius:8px;outline:none;padding:.4rem .8rem;font-family:inherit;font-size:.9rem;transition:all .2s}.theme-select:hover{border-color:var(--accent-primary)}.theme-select:focus{border-color:var(--accent-primary);box-shadow:0 0 0 2px #3b82f633}#root{width:100%;max-width:1280px;margin:0 auto;padding:2rem}.app-container{grid-template-columns:1fr 2fr;gap:2rem;margin-top:2rem;display:grid}@media (width<=900px){.app-container{grid-template-columns:1fr}}.app-header{text-align:center;margin-bottom:2rem}.app-header h1{background:var(--accent-gradient);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:.5rem;font-size:3rem;font-weight:800}.app-header p{color:var(--text-secondary);font-size:1.2rem}.panel-title{color:var(--text-primary);border-bottom:1px solid var(--glass-border);margin-bottom:1.5rem;padding-bottom:.5rem;font-size:1.5rem}.left-panel,.right-panel{flex-direction:column;gap:1.5rem;display:flex}