:root{--color-primary:#22c55e;--color-primary-hover:#16a34a;--color-primary-light:#dcfce7;--color-success:#10b981;--color-warning:#f59e0b;--color-danger:#ef4444;--color-info:#3b82f6;--color-bg:#f8fafc;--color-bg-card:#ffffff;--color-bg-input:#ffffff;--color-border:#e2e8f0;--color-border-focus:#22c55e;--color-text:#1e293b;--color-text-secondary:#64748b;--color-text-muted:#94a3b8;--shadow-sm:0 1px 2px 0 rgb(0 0 0 / 0.05);--shadow-md:0 4px 6px -1px rgb(0 0 0 / 0.1),0 2px 4px -2px rgb(0 0 0 / 0.1);--shadow-lg:0 10px 15px -3px rgb(0 0 0 / 0.1),0 4px 6px -4px rgb(0 0 0 / 0.1);--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--transition-fast:150ms ease}[data-theme=dark]{--color-bg:#0f172a;--color-bg-card:#1e293b;--color-bg-input:#334155;--color-border:#334155;--color-border-focus:#4ade80;--color-text:#f1f5f9;--color-text-secondary:#94a3b8;--color-text-muted:#64748b;--color-primary-light:#14532d}*,::after,::before{box-sizing:border-box}.container{max-width:900px;margin:0 auto;padding:2rem 1.5rem}.page-header{text-align:center;margin-bottom:2rem}.page-header__title{font-size:clamp(1.75rem, 4vw, 2.5rem);font-weight:700;color:var(--color-text);margin-bottom:.75rem}.page-header__subtitle{font-size:1.125rem;color:var(--color-text-secondary);max-width:600px;margin:0 auto}.unit-toggle{display:flex;gap:.5rem;justify-content:center;margin-bottom:1.5rem;flex-wrap:wrap}.unit-btn{padding:.625rem 1.25rem;background:var(--color-bg-card);border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:.875rem;font-weight:500;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast);font-family:inherit}.unit-btn:hover{border-color:var(--color-primary);color:var(--color-primary)}.unit-btn.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.calc-tabs{display:flex;gap:.5rem;margin-bottom:1.5rem;flex-wrap:wrap;justify-content:center}.calc-tab{padding:.75rem 1.25rem;background:var(--color-bg-card);border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:.875rem;font-weight:500;color:var(--color-text-secondary);cursor:pointer;transition:all var(--transition-fast);font-family:inherit}.calc-tab:hover{border-color:var(--color-primary);color:var(--color-primary)}.calc-tab.active{background:var(--color-primary);border-color:var(--color-primary);color:#fff}.calc-card{background:var(--color-bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:2rem;border:1px solid var(--color-border);margin-bottom:2rem}.calc-section{display:none}.calc-section.active{display:block}.calc-title{font-size:1.25rem;font-weight:600;color:var(--color-text);margin-bottom:.5rem;text-align:center}.calc-description{font-size:.9375rem;color:var(--color-text-secondary);text-align:center;margin-bottom:1.5rem}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;margin-bottom:1.5rem}.form-grid .full-width{grid-column:1/-1}@media (max-width:600px){.form-grid{grid-template-columns:1fr}}.form-group{display:flex;flex-direction:column}.form-label{font-size:.875rem;font-weight:500;color:var(--color-text-secondary);margin-bottom:.5rem}.input-with-unit{display:flex;gap:0}.form-input{flex:1;padding:.875rem 1rem;font-size:1rem;font-weight:500;font-family:inherit;background:var(--color-bg-input);border:2px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);transition:all var(--transition-fast);margin:0!important;width:100%}.input-with-unit .form-input{border-radius:var(--radius-md) 0 0 var(--radius-md);border-right:none}.input-unit{padding:.875rem 1rem;background:var(--color-bg);border:2px solid var(--color-border);border-left:none;border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--color-text-secondary);font-weight:500;font-size:.875rem;white-space:nowrap;display:flex;align-items:center}.form-input:focus{outline:0;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.form-input:focus+.input-unit{border-color:var(--color-primary)}.form-input::placeholder{color:var(--color-text-muted)}.form-input::-webkit-inner-spin-button,.form-input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}.form-input[type=number]{-moz-appearance:textfield}.result-container{background:linear-gradient(135deg,var(--color-primary-light),var(--color-bg));border-radius:var(--radius-md);padding:2rem;text-align:center}.result-label{font-size:.875rem;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem}.result-value{font-size:3rem;font-weight:700;color:var(--color-primary)}.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin-top:1.5rem}.result-item{background:var(--color-bg-card);padding:1rem;border-radius:var(--radius-sm);text-align:center;border-left:3px solid var(--color-primary)}.result-item__label{font-size:.6875rem;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em}.result-item__value{font-size:1.25rem;font-weight:700;color:var(--color-text);margin-top:.25rem}.comparison-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;margin-bottom:1.5rem}@media (max-width:600px){.comparison-grid{grid-template-columns:1fr}}.vehicle-card{background:var(--color-bg);border-radius:var(--radius-md);padding:1.5rem;border:1px solid var(--color-border)}.vehicle-title{font-size:1rem;font-weight:600;color:var(--color-primary);margin-bottom:1rem;text-align:center}.compare-inputs{margin-bottom:1.5rem}.comparison-results{display:flex;align-items:center;justify-content:center;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}.comparison-result-card{flex:1;min-width:180px;max-width:280px;background:var(--color-bg);border-radius:var(--radius-md);padding:1.25rem;text-align:center;border:2px solid var(--color-border);transition:all var(--transition-fast)}.comparison-result-card.winner{border-color:var(--color-primary);background:var(--color-primary-light)}.comparison-vehicle-name{font-size:.875rem;font-weight:600;color:var(--color-text-secondary);margin-bottom:.5rem}.comparison-cost{font-size:1.75rem;font-weight:700;color:var(--color-text);margin-bottom:.5rem}.comparison-details{font-size:.75rem;color:var(--color-text-muted);display:flex;justify-content:center;gap:1rem}.comparison-vs{font-size:1.25rem;font-weight:700;color:var(--color-text-muted);flex-shrink:0}.savings-summary{background:linear-gradient(135deg,var(--color-primary-light),var(--color-bg));border-radius:var(--radius-md);padding:1.5rem;text-align:center}.savings-label{font-size:.875rem;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:.25rem}.savings-value{font-size:2.5rem;font-weight:700;color:var(--color-primary)}.savings-detail{font-size:.875rem;color:var(--color-text-secondary);margin-top:.5rem}.tips-section{background:var(--color-bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:2rem;border:1px solid var(--color-border);margin-bottom:2rem}.tips-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:1rem}.tip-card{background:var(--color-bg);padding:1.25rem;border-radius:var(--radius-md);border-left:4px solid var(--color-primary)}.tip-card__title{font-size:.9375rem;font-weight:600;color:var(--color-text);margin-bottom:.5rem}.tip-card__text{font-size:.875rem;color:var(--color-text-secondary);line-height:1.5}.info-section{background:var(--color-bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:2rem;border:1px solid var(--color-border)}.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;margin-top:1rem;margin-bottom:2rem}.info-card{background:var(--color-bg);padding:1.25rem;border-radius:var(--radius-md)}.info-card h3{font-size:.9375rem;font-weight:600;color:var(--color-primary);margin-bottom:.5rem}.info-card p{font-size:.875rem;color:var(--color-text-secondary);line-height:1.5;margin:0}.efficiency-table{margin-top:2rem}.efficiency-table h3{font-size:1rem;font-weight:600;color:var(--color-text);margin-bottom:1rem}.efficiency-table table{width:100%;border-collapse:collapse;font-size:.875rem}.efficiency-table td,.efficiency-table th{padding:.75rem 1rem;text-align:left;border-bottom:1px solid var(--color-border)}.efficiency-table th{font-weight:600;color:var(--color-text);background:var(--color-bg)}.efficiency-table td{color:var(--color-text-secondary)}.efficiency-table tbody tr:hover{background:var(--color-bg)}.rating-badge{display:inline-block;padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;font-weight:600;text-transform:uppercase}.rating-badge.excellent{background:#dcfce7;color:#166534}.rating-badge.good{background:#dbeafe;color:#1e40af}.rating-badge.average{background:#fef3c7;color:#92400e}.rating-badge.poor{background:#fee2e2;color:#991b1b}[data-theme=dark] .rating-badge.excellent{background:#14532d;color:#86efac}[data-theme=dark] .rating-badge.good{background:#1e3a5f;color:#93c5fd}[data-theme=dark] .rating-badge.average{background:#451a03;color:#fcd34d}[data-theme=dark] .rating-badge.poor{background:#450a0a;color:#fca5a5}@media (max-width:480px){.container{padding:1rem}.calc-card{padding:1.5rem}.result-value{font-size:2.25rem}.calc-tabs{gap:.375rem}.calc-tab{padding:.625rem .875rem;font-size:.75rem}.efficiency-table{overflow-x:auto}.efficiency-table table{min-width:500px}}