:root{--ac-primary:#4361ee;--ac-primary-deep:#3a56d4;--ac-secondary:#00a86b;--ac-secondary-light:#e6f0ff;--ac-danger:#e74c3c;--ac-bg:#f7f9fb;--ac-white:#ffffff;--ac-text:#2b2d42;--ac-border:#d8dce2;--ac-radius:8px;--ac-spacing:1.5rem;--ac-gap:0.6rem;--ac-text-muted:#6b7280;--ac-text-light:#9ca3af;--ac-surface:#ffffff;--ac-surface-alt:#f0f4ff;--ac-shadow-sm:0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);--ac-shadow-md:0 4px 16px rgba(67, 97, 238, 0.1), 0 2px 6px rgba(0, 0, 0, 0.06);--ac-shadow-lg:0 8px 32px rgba(67, 97, 238, 0.14), 0 2px 8px rgba(0, 0, 0, 0.07);--ac-transition:0.2s cubic-bezier(0.4, 0, 0.2, 1)}.ac-hidden{display:none!important}.ac-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.ac-header{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;padding:1.8rem 1rem;border:1px solid var(--ac-border);border-radius:var(--ac-radius);box-shadow:var(--ac-shadow-sm)}.ac-header-icon svg{width:52px;height:52px;flex-shrink:0}.ac-title{font-size:1.75rem!important;font-weight:700;color:var(--ac-primary)!important;letter-spacing:-.02em;line-height:1.2}.ac-subtitle{font-size:0.875rem!important;color:var(--ac-text-muted)!important;font-weight:400;margin-top:.2rem}.ac-main{display:flex;flex-direction:column;gap:1.25rem}.ac-section{background:var(--ac-surface)!important;border:1px solid var(--ac-border)!important;border-radius:var(--ac-radius);padding:var(--ac-spacing);box-shadow:var(--ac-shadow-sm)}.ac-section-title{display:flex;align-items:center;gap:.6rem;font-size:0.8rem!important;font-weight:600;color:var(--ac-text-muted)!important;text-transform:uppercase;letter-spacing:.08em;margin-bottom:1rem}.ac-section-num{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:var(--ac-primary)!important;color:var(--ac-white)!important;font-size:0.7rem!important;font-weight:700;flex-shrink:0}.ac-shape-tabs,.ac-unit-tabs{display:flex;gap:var(--ac-gap)}.ac-shape-tab,.ac-unit-tab{display:inline-flex;align-items:center;gap:.45rem;padding:.55rem 1.1rem;border-radius:var(--ac-radius);border:1.5px solid var(--ac-border)!important;background:var(--ac-bg)!important;color:var(--ac-text-muted)!important;font-size:0.875rem!important;font-weight:500;cursor:pointer;transition:all var(--ac-transition)}.ac-shape-tab svg{width:18px;height:18px;flex-shrink:0}.ac-shape-tab:hover,.ac-unit-tab:hover{border-color:var(--ac-primary)!important;color:var(--ac-primary)!important}.ac-shape-tab.ac-active,.ac-unit-tab.ac-active{background:var(--ac-primary)!important;border-color:var(--ac-primary)!important;color:var(--ac-white)!important;box-shadow:0 2px 8px rgb(67 97 238 / .25)}.ac-dimensions-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.ac-dim-group{display:contents}.ac-field{display:flex;flex-direction:column;gap:.35rem}.ac-field-depth{grid-column:1 / -1}.ac-circ-only .ac-field-depth{grid-column:1 / -1}.ac-label{font-size:0.8rem!important;font-weight:600;color:var(--ac-text-muted)!important;text-transform:uppercase;letter-spacing:.06em;display:flex;align-items:center;gap:.4rem}.ac-label-hint{font-size:0.73rem!important;font-weight:400;color:var(--ac-text-light)!important;text-transform:none;letter-spacing:0}.ac-input-wrap{position:relative;display:flex;align-items:center}.ac-input{width:100%;padding:.65rem 3rem .65rem .9rem;font-size:1rem!important;font-weight:500;color:var(--ac-text)!important;background:var(--ac-bg)!important;border:1.5px solid var(--ac-border)!important;border-radius:var(--ac-radius);outline:none;transition:border-color var(--ac-transition),box-shadow var(--ac-transition);-moz-appearance:textfield}.ac-input::-webkit-outer-spin-button,.ac-input::-webkit-inner-spin-button{-webkit-appearance:none}.ac-input:focus{border-color:var(--ac-primary)!important;box-shadow:0 0 0 3px rgb(67 97 238 / .12);background:var(--ac-white)!important}.ac-input.ac-input-error{border-color:var(--ac-danger)!important}.ac-unit-label{position:absolute;right:.75rem;font-size:0.78rem!important;font-weight:600;color:var(--ac-text-muted)!important;pointer-events:none;user-select:none}.ac-material-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:var(--ac-gap)}.ac-material-card{display:flex;flex-direction:column;align-items:center;gap:.3rem;padding:.75rem .5rem;border-radius:var(--ac-radius);border:1.5px solid var(--ac-border)!important;background:var(--ac-bg)!important;cursor:pointer;transition:all var(--ac-transition);text-align:center;user-select:none}.ac-material-card:hover{border-color:var(--ac-primary)!important;background:var(--ac-surface-alt)!important}.ac-material-card.ac-active{border-color:var(--ac-primary)!important;background:var(--ac-secondary-light)!important;box-shadow:0 2px 8px rgb(67 97 238 / .15)}.ac-material-icon{font-size:1.4rem!important;line-height:1}.ac-material-name{font-size:0.75rem!important;font-weight:600;color:var(--ac-text)!important;line-height:1.2}.ac-material-density{font-size:0.68rem!important;color:var(--ac-text-light)!important;font-weight:400}.ac-material-card.ac-active .ac-material-density{color:var(--ac-primary)!important}.ac-custom-density{margin-top:1rem;display:flex;flex-direction:column;gap:.35rem}.ac-waste-row{display:flex;align-items:center;flex-wrap:wrap;gap:.75rem}.ac-waste-buttons{display:flex;gap:var(--ac-gap)}.ac-waste-btn{padding:.45rem 1rem;border-radius:var(--ac-radius);border:1.5px solid var(--ac-border)!important;background:var(--ac-bg)!important;color:var(--ac-text-muted)!important;font-size:0.85rem!important;font-weight:600;cursor:pointer;transition:all var(--ac-transition)}.ac-waste-btn:hover{border-color:var(--ac-secondary)!important;color:var(--ac-secondary)!important}.ac-waste-btn.ac-active{background:var(--ac-secondary)!important;border-color:var(--ac-secondary)!important;color:var(--ac-white)!important}.ac-waste-hint{font-size:0.78rem!important;color:var(--ac-text-light)!important;font-style:italic}.ac-btn-calculate{display:flex;align-items:center;justify-content:center;gap:.6rem;width:100%;padding:1rem;border-radius:var(--ac-radius);border:none!important;background:var(--ac-primary)!important;color:var(--ac-white)!important;font-size:1.05rem!important;font-weight:700;cursor:pointer;letter-spacing:.01em;transition:background var(--ac-transition),box-shadow var(--ac-transition),transform var(--ac-transition);box-shadow:var(--ac-shadow-md)}.ac-btn-calculate svg{width:20px;height:20px}.ac-btn-calculate:hover{background:var(--ac-primary-deep)!important;box-shadow:var(--ac-shadow-lg);transform:translateY(-1px)}.ac-btn-calculate:active{transform:translateY(0)}.ac-error{padding:.75rem 1rem;border-radius:var(--ac-radius);border:1px solid var(--ac-danger)!important;background:#fef2f2!important;color:var(--ac-danger)!important;font-size:0.875rem!important;font-weight:500}.ac-results-panel{background:var(--ac-surface)!important;border:2px solid var(--ac-primary)!important;border-radius:var(--ac-radius);overflow:hidden;box-shadow:var(--ac-shadow-lg);animation:ac-slide-up 0.3s cubic-bezier(.4,0,.2,1)}@keyframes ac-slide-up{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.ac-results-header{display:flex;align-items:center;justify-content:space-between;padding:1.25rem var(--ac-spacing);background:var(--ac-primary)!important}.ac-results-title{font-size:1.1rem!important;font-weight:700;color:var(--ac-white)!important}.ac-results-subtitle{font-size:0.8rem!important;color:rgb(255 255 255 / .75)!important;margin-top:.1rem}.ac-results-badge{display:flex;flex-direction:column;align-items:flex-end;line-height:1}.ac-results-badge #ac-badge-tons{font-size:2rem!important;font-weight:800;color:var(--ac-white)!important;letter-spacing:-.03em}.ac-results-badge small{font-size:0.72rem!important;color:rgb(255 255 255 / .7)!important;text-transform:uppercase;letter-spacing:.07em}.ac-results-grid{display:grid;grid-template-columns:1fr 1fr;gap:0}.ac-result-card{display:flex;align-items:center;gap:.75rem;padding:1rem var(--ac-spacing);border-bottom:1px solid var(--ac-border)!important;border-right:1px solid var(--ac-border)!important;background:var(--ac-white)!important;transition:background var(--ac-transition)}.ac-result-card:nth-child(even){border-right:none!important}.ac-result-card:nth-last-child(-n+2){border-bottom:none!important}.ac-result-card.ac-result-highlight{background:var(--ac-surface-alt)!important}.ac-result-icon{font-size:1.4rem!important;flex-shrink:0}.ac-result-body{display:flex;flex-direction:column;gap:.1rem;min-width:0}.ac-result-label{font-size:0.72rem!important;font-weight:600;color:var(--ac-text-muted)!important;text-transform:uppercase;letter-spacing:.05em}.ac-result-value{font-size:1.05rem!important;font-weight:700;color:var(--ac-text)!important;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ac-result-highlight .ac-result-value{color:var(--ac-primary)!important;font-size:1.15rem!important}.ac-formula-details{border-top:1px solid var(--ac-border)!important}.ac-formula-summary{padding:.85rem var(--ac-spacing);font-size:0.82rem!important;font-weight:600;color:var(--ac-primary)!important;cursor:pointer;user-select:none;list-style:none;display:flex;align-items:center;gap:.4rem;transition:background var(--ac-transition)}.ac-formula-summary::before{content:"▶";font-size:0.65rem!important;transition:transform var(--ac-transition)}details[open] .ac-formula-summary::before{transform:rotate(90deg)}.ac-formula-summary::-webkit-details-marker{display:none}.ac-formula-summary:hover{background:var(--ac-surface-alt)!important}.ac-formula-body{padding:0 var(--ac-spacing) 1rem;font-size:0.85rem!important;color:var(--ac-text-muted)!important;display:flex;flex-direction:column;gap:.4rem}.ac-formula-row{display:flex;flex-wrap:wrap;gap:.3rem .6rem;align-items:center}.ac-formula-label{font-weight:600;color:var(--ac-text)!important;min-width:180px}.ac-formula-val{font-family:"Rubik",monospace;font-size:0.82rem!important;background:var(--ac-bg)!important;border:1px solid var(--ac-border)!important;border-radius:4px;padding:.15rem .5rem;color:var(--ac-primary)!important}.ac-actions{display:flex;gap:var(--ac-gap);padding:1rem var(--ac-spacing);border-top:1px solid var(--ac-border)!important;flex-wrap:wrap}.ac-action-btn{display:inline-flex;align-items:center;gap:.45rem;padding:.55rem 1.1rem;border-radius:var(--ac-radius);border:1.5px solid transparent!important;font-size:0.85rem!important;font-weight:600;cursor:pointer;transition:all var(--ac-transition)}.ac-action-btn svg{width:16px;height:16px;flex-shrink:0}.ac-action-pdf{background:var(--ac-primary)!important;color:var(--ac-white)!important;border-color:var(--ac-primary)!important}.ac-action-pdf:hover{background:var(--ac-primary-deep)!important;border-color:var(--ac-primary-deep)!important}.ac-action-copy{background:var(--ac-white)!important;color:var(--ac-primary)!important;border-color:var(--ac-primary)!important}.ac-action-copy:hover{background:var(--ac-secondary-light)!important}.ac-action-reset{background:var(--ac-white)!important;color:var(--ac-danger)!important;border-color:var(--ac-danger)!important}.ac-action-reset:hover{background:#fef2f2!important}.ac-disclaimer{margin-top:1.5rem;text-align:center;font-size:0.75rem!important;color:var(--ac-text-light)!important;line-height:1.5;padding:0 .5rem}.ac-modal-overlay{position:fixed;inset:0;background:rgb(0 0 0 / .45)!important;display:flex;align-items:center;justify-content:center;z-index:9999;padding:1rem;animation:ac-fade-in 0.2s ease}@keyframes ac-fade-in{from{opacity:0}to{opacity:1}}.ac-modal{background:var(--ac-white)!important;border-radius:12px;padding:2rem;max-width:360px;width:100%;text-align:center;box-shadow:0 24px 64px rgb(0 0 0 / .2);animation:ac-modal-in 0.25s cubic-bezier(.34,1.56,.64,1)}@keyframes ac-modal-in{from{transform:scale(.92);opacity:0}to{transform:scale(1);opacity:1}}.ac-modal-icon{font-size:2.5rem!important;margin-bottom:.75rem}.ac-modal-title{font-size:1.2rem!important;font-weight:700;color:var(--ac-text)!important;margin-bottom:.5rem}.ac-modal-body{font-size:0.875rem!important;color:var(--ac-text-muted)!important;margin-bottom:1.5rem}.ac-modal-actions{display:flex;gap:.75rem;justify-content:center}.ac-modal-btn{padding:.6rem 1.4rem;border-radius:var(--ac-radius);font-size:0.9rem!important;font-weight:600;cursor:pointer;transition:all var(--ac-transition)}.ac-modal-cancel{background:var(--ac-bg)!important;border:1.5px solid var(--ac-border)!important;color:var(--ac-text-muted)!important}.ac-modal-cancel:hover{background:var(--ac-border)!important}.ac-modal-confirm{background:var(--ac-danger)!important;border:1.5px solid var(--ac-danger)!important;color:var(--ac-white)!important}.ac-modal-confirm:hover{background:#c0392b!important;border-color:#c0392b!important}.ac-toast{position:fixed;bottom:1.5rem;left:50%;transform:translateX(-50%) translateY(10px);background:var(--ac-text)!important;color:var(--ac-white)!important;padding:.65rem 1.4rem;border-radius:999px;font-size:0.875rem!important;font-weight:600;z-index:10000;opacity:0;transition:all 0.3s cubic-bezier(.4,0,.2,1);pointer-events:none;white-space:nowrap}.ac-toast.ac-toast-show{opacity:1;transform:translateX(-50%) translateY(0)}@media (max-width:680px){.ac-header{gap:.75rem}.ac-title{font-size:1.4rem!important}.ac-dimensions-grid{grid-template-columns:1fr}.ac-field-depth{grid-column:1 / 2}.ac-material-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr))}.ac-results-grid{grid-template-columns:1fr}.ac-result-card{border-right:none!important}.ac-result-card:nth-last-child(-n+2){border-bottom:1px solid var(--ac-border)!important}.ac-result-card:last-child{border-bottom:none!important}.ac-results-header{flex-direction:column;align-items:flex-start;gap:.5rem}.ac-results-badge{align-items:flex-start;flex-direction:row;align-items:center;gap:.4rem}.ac-results-badge #ac-badge-tons{font-size:1.5rem!important}.ac-actions{flex-wrap:wrap}.ac-action-reset{margin-left:0;width:100%;justify-content:center}}@media (max-width:400px){.ac-shape-tabs,.ac-unit-tabs{flex-wrap:wrap}.ac-waste-buttons{flex-wrap:wrap}.ac-material-grid{grid-template-columns:repeat(3,1fr)}}