:root{--primary-color:#0078aa;--primary-dark:#0a58ca;--primary-light:#e7f1ff;--secondary-color:#6c757d;--success-color:#198754;--warning-color:#ffc107;--danger-color:#dc3545;--info-color:#0dcaf0;--bg-body:#f4f6f9;--bg-surface:#ffffff;--bg-sidebar:#ffffff;--text-main:#2c3e50;--text-muted:#6c757d;--text-light:#ffffff;--border-color:#e9ecef;--border-focus:#86b7fe;--shadow-sm:0 .125rem .25rem rgba(0,0,0,.075);--shadow-md:0 .5rem 1rem rgba(0,0,0,.15);--shadow-lg:0 1rem 3rem rgba(0,0,0,.175);--shadow-soft:0 10px 30px -10px rgba(0, 0, 0, 0.1);--radius-sm:0.375rem;--radius-md:0.75rem;--radius-lg:1rem;--radius-xl:1.5rem}body{background-color:var(--bg-body);color:var(--text-main);font-family:Inter,system-ui,-apple-system,sans-serif;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-weight:600;letter-spacing:-.02em;color:#1a1a1a}.calc-container{max-width:1400px;margin:0 auto;padding:2rem 1rem}.calc-card{background:var(--bg-surface);border:1px solid rgba(0,0,0,.04);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);padding:2rem;transition:transform .2s ease,box-shadow .2s ease}.calc-card-header{margin-bottom:2rem;border-bottom:1px solid var(--border-color);padding-bottom:1rem;display:flex;justify-content:space-between;align-items:center}.calc-stepper{background:var(--bg-surface);border-radius:var(--radius-lg);padding:1rem;box-shadow:var(--shadow-sm);border:1px solid rgba(0,0,0,.04)}.calc-stepper .list-group-item{border:none;background:0 0;padding:1rem 1.25rem;margin-bottom:.5rem;border-radius:var(--radius-md);font-weight:500;color:var(--text-muted);transition:all .2s ease;cursor:pointer;display:flex;align-items:center;gap:10px}.calc-stepper .list-group-item:hover{background-color:var(--primary-light);color:var(--primary-color)}.calc-stepper .list-group-item.active-step{background-color:var(--primary-color);color:var(--text-light);box-shadow:0 4px 12px rgba(13,110,253,.3)}.calc-stepper .list-group-item.disabled{opacity:.6;pointer-events:none}.form-label{font-weight:500;font-size:.875rem;margin-bottom:.5rem;color:#4a5568}.form-control,.form-select{border:1px solid #ced4da;border-radius:var(--radius-sm);padding:.75rem 1rem;font-size:1rem;transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out;background-color:#fcfcfc}.form-control:focus,.form-select:focus{background-color:#fff;border-color:var(--border-focus);box-shadow:0 0 0 4px rgba(13,110,253,.15)}.btn-calc{padding:.75rem 1.5rem;border-radius:var(--radius-md);font-weight:600;letter-spacing:.3px;transition:all .2s ease;border:none}.btn-calc-primary{background:linear-gradient(145deg,var(--primary-color),var(--primary-dark));color:#fff;box-shadow:0 4px 6px -1px rgba(13,110,253,.3)}.btn-calc-primary:hover{filter:brightness(110%);transform:translateY(-1px);box-shadow:0 10px 15px -3px rgba(13,110,253,.4);color:#fff}.btn-calc-secondary{background:#fff;border:1px solid var(--border-color);color:var(--text-main)}.btn-calc-secondary:hover{background:#f8f9fa;border-color:#c7c7c7;color:#1a1a1a}.btn-calc-outline{border:1px solid var(--primary-color);color:var(--primary-color);background:0 0}.btn-calc-outline:hover{background:var(--primary-light);color:var(--primary-dark)}.table-modern{width:100%;border-collapse:separate;border-spacing:0}.table-modern thead th{background-color:#f8f9fa;color:var(--text-muted);font-weight:600;text-transform:uppercase;font-size:.75rem;letter-spacing:.05em;padding:1rem;border-bottom:2px solid var(--border-color)}.table-modern tbody td{padding:1rem;vertical-align:middle;border-bottom:1px solid var(--border-color);background:#fff;transition:background .2s}.table-modern tbody tr:hover td{background-color:#f1f5f9}.table-modern tbody tr:last-child td{border-bottom:none}.table-modern thead th:first-child{border-top-left-radius:var(--radius-md)}.table-modern thead th:last-child{border-top-right-radius:var(--radius-md)}.table-modern tbody tr:last-child td:first-child{border-bottom-left-radius:var(--radius-md)}.table-modern tbody tr:last-child td:last-child{border-bottom-right-radius:var(--radius-md)}.calc-accordion .accordion-item{border:1px solid rgba(0,0,0,.05);margin-bottom:1rem;border-radius:var(--radius-md)!important;overflow:hidden;background:#fff;box-shadow:0 2px 4px rgba(0,0,0,.02)}.calc-accordion .accordion-button{background-color:var(--primary-color)!important;color:var(--text-light)!important;font-weight:600;padding:1.25rem;box-shadow:none;cursor:pointer;transition:background-color .2s ease,color .2s ease}.calc-accordion .accordion-button:hover{background-color:var(--primary-dark)!important;color:var(--text-light)!important}.calc-accordion .accordion-button:not(.collapsed){background-color:var(--primary-dark)!important;color:var(--text-light)!important;box-shadow:none}.calc-accordion .accordion-button::after{display:none!important}.calc-accordion .accordion-body{padding:1.5rem;background-color:#fff;border-top:1px solid var(--border-color)}.accordion-submenu{background-color:var(--primary-color);color:#fff;margin-bottom:1rem;border-radius:var(--radius-sm)}.text-label-small{text-transform:uppercase;font-size:.7rem;font-weight:700;color:var(--text-muted);letter-spacing:.5px}.bg-soft-primary{background-color:var(--primary-light)}.text-primary-dark{color:var(--primary-dark)}.table-responsive{scrollbar-width:thin;scrollbar-color:#adb5bd #f1f3f5}.fade-enter-active,.fade-leave-active{transition:opacity .3s}.fade-enter,.fade-leave-to{opacity:0}