.calculator{background-color:var(--color-background);border-radius:var(--border-radius-lg);padding:var(--spacing-xl);box-shadow:var(--box-shadow-lg);margin-bottom:var(--spacing-2xl);max-width:800px;margin-left:auto;margin-right:auto}.calculator-title{font-size:1.75rem;font-weight:700;margin-bottom:var(--spacing-lg);text-align:center}.calculator-form{display:flex;flex-direction:column;gap:var(--spacing-lg)}.calculator-row{display:flex;flex-direction:column;gap:var(--spacing-xs)}.calculator-label{font-weight:600;color:var(--color-text)}.calculator-select,.calculator-input{padding:var(--spacing-sm);border:2px solid var(--color-border);border-radius:var(--border-radius);font-size:1rem;font-family:inherit;transition:border-color var(--transition-speed) var(--transition-timing)}.calculator-select:focus,.calculator-input:focus{outline:none;border-color:var(--color-primary)}.calculator-extras{padding-top:var(--spacing-md);border-top:1px solid var(--color-border)}.calculator-extras-title{font-weight:600;margin-bottom:var(--spacing-md)}.calculator-extras-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--spacing-sm)}.calculator-checkbox-wrapper{display:flex;flex-direction:column}.calculator-checkbox-label{display:flex;align-items:center;gap:var(--spacing-xs);cursor:pointer;user-select:none}.calculator-checkbox{width:18px;height:18px;cursor:pointer}.calculator-result{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg);background-color:var(--color-primary);color:white;border-radius:var(--border-radius);margin-top:var(--spacing-md)}.calculator-result-label{font-size:1.25rem;font-weight:600}.calculator-result-value{font-size:2rem;font-weight:700}