:root{--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--bg-primary: #f8fafc;--bg-secondary: #ffffff;--accent-primary: #3b82f6;--accent-secondary: #2563eb;--text-primary: #1e293b;--text-secondary: #64748b;--border-color: #e2e8f0;--card-shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--card-radius: 12px;--input-radius: 8px}@media(prefers-color-scheme:dark){:root{--bg-primary: #0f172a;--bg-secondary: #1e293b;--accent-primary: #60a5fa;--accent-secondary: #3b82f6;--text-primary: #f8fafc;--text-secondary: #94a3b8;--border-color: #334155;--card-shadow: 0 10px 15px -3px rgb(0 0 0 / .5)}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-primary);color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased}.container{max-width:1000px;margin:0 auto;padding:2rem 1rem}header{text-align:center;margin-bottom:3rem}h1{font-size:2.5rem;font-weight:800;letter-spacing:-.025em;margin-bottom:.5rem;background:linear-gradient(to right,var(--accent-primary),var(--accent-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.subtitle{color:var(--text-secondary);font-size:1.125rem}.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:2rem;margin-top:2rem}.tool-button{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--card-radius);padding:2rem;text-align:left;cursor:pointer;transition:all .2s ease;box-shadow:var(--card-shadow);display:flex;flex-direction:column;gap:1rem}.tool-button:hover{transform:translateY(-4px);border-color:var(--accent-primary);box-shadow:0 20px 25px -5px #0000001a}.tool-button h3{font-size:1.5rem;font-weight:700;color:var(--text-primary)}.tool-button p{color:var(--text-secondary);font-size:1rem}.tool-icon{width:48px;height:48px;background:linear-gradient(to bottom right,var(--accent-primary),var(--accent-secondary));border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff;margin-bottom:.5rem}.back-btn{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:none;border:1px solid var(--border-color);border-radius:var(--input-radius);color:var(--text-secondary);cursor:pointer;font-weight:600;margin-bottom:2rem;transition:all .2s ease}.back-btn:hover{background-color:var(--bg-secondary);color:var(--accent-primary);border-color:var(--accent-primary)}.accordion-container{display:flex;flex-direction:column;gap:1rem}.accordion-item{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--card-radius);box-shadow:var(--card-shadow);overflow:hidden;transition:all .3s ease}.accordion-header{padding:1.25rem 1.5rem;cursor:pointer;display:flex;align-items:center;gap:1rem;transition:background-color .2s ease}.accordion-header:hover{background-color:#00000005}.accordion-header h2{font-size:1.25rem;font-weight:600;flex:1}.accordion-icon{transition:transform .3s ease}.accordion-item.active .accordion-icon{transform:rotate(180deg)}.accordion-content{max-height:0;overflow:hidden;transition:max-height .4s cubic-bezier(.4,0,.2,1),padding .4s ease;padding:0 1.5rem}.accordion-item.active .accordion-content{max-height:1500px;padding:1.5rem;border-top:1px solid var(--border-color)}.tool-layout{display:grid;grid-template-columns:1.5fr 1fr;gap:2rem}@media(max-width:768px){.tool-layout{grid-template-columns:1fr}}.tool-inputs{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem}.tool-results{background-color:var(--bg-primary);padding:1.5rem;border-radius:var(--input-radius);height:fit-content}.input-group label{display:block;font-size:.875rem;font-weight:500;color:var(--text-secondary);margin-bottom:.375rem}input,select{width:100%;padding:.625rem .875rem;border-radius:var(--input-radius);border:1px solid var(--border-color);background-color:var(--bg-secondary);color:var(--text-primary);font-size:1rem}.results{display:flex;flex-direction:column;gap:.75rem}.result-item{display:flex;justify-content:space-between;align-items:center}.result-label{font-size:.875rem;color:var(--text-secondary)}.result-value{font-size:1.125rem;font-weight:700;color:var(--accent-primary)}.unit-toggle{display:flex;justify-content:center;gap:1rem;margin-bottom:2rem}.toggle-btn{padding:.5rem 1.5rem;border-radius:9999px;border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;font-weight:600}.toggle-btn.active{background:var(--accent-primary);color:#fff}.modal-overlay{position:fixed;inset:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background-color:var(--bg-secondary);padding:2rem;border-radius:var(--card-radius);max-width:500px;width:90%;text-align:center}.modal-btn{padding:.75rem 2rem;border-radius:var(--input-radius);background-color:var(--accent-primary);color:#fff;border:none;font-weight:600;cursor:pointer}.experimental-badge{background-color:#fef3c7;color:#92400e;font-size:.75rem;padding:.25rem .5rem;border-radius:4px;font-weight:800;text-transform:uppercase;width:fit-content}.state-list{display:flex;flex-direction:column;gap:.75rem}.state-row{display:grid;grid-template-columns:1.5fr .8fr .7fr .8fr auto auto;gap:.5rem;align-items:end;padding:.75rem;background-color:var(--bg-primary);border-radius:var(--input-radius);border:1px solid var(--border-color)}.state-row .input-group label{font-size:.75rem;white-space:nowrap}.state-row input,.state-row select{padding:.5rem .625rem;font-size:.875rem}.classification-toggle{display:flex;gap:0;align-self:end}.classification-toggle button{padding:.5rem .625rem;font-size:.75rem;font-weight:600;border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-secondary);cursor:pointer;transition:all .15s ease}.classification-toggle button:first-child{border-radius:var(--input-radius) 0 0 var(--input-radius)}.classification-toggle button:last-child{border-radius:0 var(--input-radius) var(--input-radius) 0;border-left:none}.classification-toggle button.active{background:var(--accent-primary);color:#fff;border-color:var(--accent-primary)}.classification-toggle button.active+button{border-left:1px solid var(--border-color)}.remove-state-btn{align-self:end;padding:.5rem;background:none;border:1px solid transparent;border-radius:var(--input-radius);color:var(--text-secondary);cursor:pointer;transition:all .15s ease;display:flex;align-items:center;justify-content:center}.remove-state-btn:hover:not(:disabled){color:#ef4444;border-color:#ef4444;background-color:#ef44440d}.remove-state-btn:disabled{opacity:.3;cursor:not-allowed}.add-state-btn{width:100%;padding:.625rem;border:2px dashed var(--border-color);border-radius:var(--input-radius);background:none;color:var(--text-secondary);font-weight:600;font-size:.875rem;cursor:pointer;transition:all .15s ease}.add-state-btn:hover{border-color:var(--accent-primary);color:var(--accent-primary)}.summary-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:.75rem;margin-top:1.25rem;padding-top:1.25rem;border-top:1px solid var(--border-color)}.stat-item{text-align:center}.stat-value{font-size:1rem;font-weight:700;color:var(--accent-primary)}.stat-label{font-size:.75rem;color:var(--text-secondary);margin-top:.125rem}.battery-config-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.25rem}.checkbox-group{display:flex;align-items:center;gap:.5rem;align-self:end;padding-bottom:.5rem}.checkbox-group input[type=checkbox]{width:auto;accent-color:var(--accent-primary)}.checkbox-group label{font-size:.875rem;color:var(--text-secondary);font-weight:500}.runtime-headline{text-align:center;padding:1.5rem;background:var(--bg-primary);border-radius:var(--input-radius);margin-bottom:1.5rem}.runtime-headline .runtime-value{font-size:2rem;font-weight:800;color:var(--accent-primary)}.runtime-headline .runtime-label{font-size:.875rem;color:var(--text-secondary);margin-top:.25rem}.runtime-headline .runtime-secondary{font-size:.875rem;color:var(--text-secondary);margin-top:.5rem}.chart-container{background:var(--bg-primary);border-radius:var(--input-radius);padding:1.25rem;margin-bottom:1rem}.chart-container h3{font-size:.875rem;font-weight:600;color:var(--text-secondary);margin-bottom:1rem}.battery-results-section{margin-top:1.5rem}@media(max-width:768px){.state-row{grid-template-columns:1fr 1fr;gap:.5rem}.classification-toggle{grid-column:1 / -1}}