@import"https://fonts.googleapis.com/css2?family=Pretendard:wght@400;600;800&display=swap";:root{--primary-color: #3b82f6;--primary-hover: #2563eb;--bg-color: #e2e8f0;--card-bg: #ffffff;--text-main: #1e293b;--text-muted: #64748b;--border-color: #e2e8f0;--shadow: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius: 12px}*{box-sizing:border-box;margin:0;padding:0}.tab-bar-container{display:flex;align-items:center;margin-bottom:1.5rem;overflow-x:auto;gap:8px;padding-bottom:5px}.tab-bar{display:flex;gap:8px}.tab-item{padding:.75rem 1.25rem;background-color:#cbd5e1;border-radius:8px 8px 0 0;cursor:pointer;font-weight:600;color:#475569;transition:all .2s;min-width:100px;text-align:center;position:relative;-webkit-user-select:none;user-select:none}.tab-item.active{background-color:var(--card-bg);color:var(--primary-color);box-shadow:0 -2px 5px #0000000d;font-weight:800}.tab-item:hover:not(.active){background-color:#e2e8f0}.add-tab-btn{background-color:#cbd5e1;color:#475569;border:none;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:700;cursor:pointer;transition:all .2s;flex-shrink:0}.add-tab-btn:hover{background-color:var(--primary-color);color:#fff}.paste-zone{border:2px dashed #cbd5e1;background-color:#f8fafc;border-radius:8px;padding:1rem;text-align:center;cursor:pointer;transition:all .2s;color:#64748b;min-height:80px;display:flex;flex-direction:column;justify-content:center;align-items:center;outline:none}.paste-zone:hover,.paste-zone:focus{border-color:var(--primary-color);background-color:#f1f5f9;color:var(--primary-color)}.paste-zone p{margin:0;font-size:.9rem;pointer-events:none}#image-preview-container{margin-top:10px;position:relative;display:inline-block}#image-preview-container.hidden{display:none}#image-preview{max-height:120px;border-radius:4px;border:1px solid #e2e8f0;box-shadow:0 4px 6px #0000000d}#clear-image-btn{position:absolute;top:-8px;right:-8px;background:#ef4444;color:#fff;border:none;border-radius:50%;width:24px;height:24px;line-height:24px;text-align:center;font-size:.7rem;cursor:pointer;box-shadow:0 2px 4px #0003;padding:0;font-weight:700}.tab-name-input{background:transparent;border:none;font-family:inherit;font-weight:inherit;color:inherit;text-align:center;width:100%;outline:none}.attached-image{max-width:100%;max-height:150px;border-radius:4px;box-shadow:0 2px 4px #0000001a;display:block;margin-top:4px;cursor:zoom-in}.attached-image:hover{box-shadow:0 4px 8px #00000026}.delete-tab-btn{position:absolute;top:2px;right:2px;font-size:.7rem;width:16px;height:16px;line-height:14px;background:#ef4444;color:#fff;border-radius:50%;text-align:center;opacity:0;transition:opacity .2s}.tab-item:hover .delete-tab-btn{opacity:1}.modal{border:none;background:transparent;padding:0;width:100vw;height:100vh;max-width:100vw;max-height:100vh;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);background-color:#0006;display:flex;align-items:center;justify-content:center;z-index:1000;position:fixed;top:0;left:0}.modal:not([open]){display:none}.modal-content{background:#fff;width:600px;max-width:90%;border-radius:12px;box-shadow:0 10px 25px #0003;display:flex;flex-direction:column;overflow:hidden}.modal-header{padding:1rem 1.5rem;border-bottom:1px solid #e2e8f0;display:flex;justify-content:space-between;align-items:center;background-color:#f8fafc}.modal-header h2{font-size:1.25rem;margin:0;color:#1e293b}.close-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;color:#64748b}.close-btn:hover{color:#ef4444}.modal-body{padding:1.5rem;max-height:60vh;overflow-y:auto}.modal-footer{padding:1rem 1.5rem;border-top:1px solid #e2e8f0;display:flex;justify-content:flex-end;background-color:#f8fafc}body{font-family:Pretendard,-apple-system,BlinkMacSystemFont,system-ui,Roboto,sans-serif;background-color:var(--bg-color);color:var(--text-main);line-height:1.6;padding:2rem 1rem}.app-container{max-width:1200px;margin:0 auto}header{text-align:center;margin-bottom:3rem}header h1{font-size:2.5rem;font-weight:800;letter-spacing:-.025em}header .highlight{color:var(--primary-color)}.subtitle{color:var(--text-muted);font-size:1.1rem;margin-top:.5rem}.card{background:var(--card-bg);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);margin-bottom:1.5rem;border:1px solid var(--border-color)}.card h2{font-size:1.25rem;margin-bottom:1.5rem;display:flex;align-items:center;gap:.75rem;color:var(--text-main)}.input-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem}.input-group label{display:block;font-size:.875rem;font-weight:600;color:var(--text-muted);margin-bottom:.5rem}.input-group input{width:100%;padding:.75rem;border:1px solid var(--border-color);border-radius:8px;font-size:1rem;transition:border-color .2s}.input-group input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #3b82f61a}.primary-btn{width:100%;background-color:var(--primary-color);color:#fff;border:none;padding:1rem;border-radius:8px;font-size:1rem;font-weight:700;cursor:pointer;transition:background-color .2s}.primary-btn:hover{background-color:var(--primary-hover)}.results-container{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.results-container.full-width{grid-template-columns:1fr}@media(max-width:900px){.results-container{grid-template-columns:1fr}}#canvas-wrapper{width:100%;aspect-ratio:16 / 9;background:#f1f5f9;border-radius:8px;overflow:hidden;margin-bottom:1rem;display:flex;align-items:center;justify-content:center}#structure-canvas{width:100%;height:100%}.result-table{width:100%;border-collapse:collapse}.result-table th,.result-table td{padding:1rem;text-align:left;border-bottom:1px solid var(--border-color)}.result-table th{font-size:.875rem;color:var(--text-muted)}.total-row{font-weight:800;font-size:1.1rem;background-color:#eff6ff}.secondary-btn{width:100%;background:#f1f5f9;color:var(--text-main);border:1px solid var(--border-color);padding:.75rem;border-radius:8px;font-weight:600;cursor:pointer;transition:all .2s}.secondary-btn:hover{background:var(--border-color)}.hidden{display:none}#ai-image-container img{width:100%;border-radius:8px;box-shadow:var(--shadow)}.delete-btn{background-color:#fee2e2;color:#ef4444;border:1px solid #fecaca;padding:.25rem .5rem;border-radius:4px;cursor:pointer;font-size:.75rem;font-weight:600}.delete-btn:hover{background-color:#fca5a5;color:#fff}.tag{font-size:.75rem;background:#f1f5f9;padding:.25rem .5rem;border-radius:4px;color:var(--text-muted)}.professional{width:100%;border-collapse:collapse;font-size:.9rem}.row-actions{display:flex;gap:4px;justify-content:center}.drag-handle{cursor:grab;color:#94a3b8;text-align:center;-webkit-user-select:none;user-select:none;font-size:1.1rem}.drag-handle:active{cursor:grabbing}tr.dragging{opacity:.5;background-color:#f1f5f9}tr.drag-over{border-top:3px solid #3b82f6!important}[contenteditable=true]:empty:before{content:attr(data-placeholder);color:#94a3b8;font-style:italic;font-weight:400}.row-highlight{background-color:#fef08a!important;transition:background-color .5s ease-out}[contenteditable=true]:hover{background-color:#f8fafc;outline:1px dashed #cbd5e1}[contenteditable=true]:focus{background-color:#fff;outline:2px solid #3b82f6;padding:2px}.formula-line{display:flex;align-items:center;gap:4px;margin-top:4px}.edit-formula{min-width:50px;display:inline-block}.unit-text{color:#64748b;font-weight:500}.move-up-btn,.move-down-btn,.insert-btn{background:#f1f5f9;border:1px solid #cbd5e1;color:#475569;padding:2px 6px;border-radius:4px;cursor:pointer;font-family:monospace;transition:all .2s}.insert-btn{color:#4f46e5;font-weight:700}.move-up-btn:hover,.move-down-btn:hover,.insert-btn:hover{background:#e2e8f0;color:#1e293b}.professional th{background:#f8fafc;text-align:center!important;font-weight:800;color:#1e293b}.professional td{border:1px solid #e2e8f0;vertical-align:middle}.category-start td:first-child{border-right:none}.formula-cell{padding-left:1.5rem!important}.formula-cell .desc{font-weight:600;margin-bottom:.25rem}.formula-cell .formula-text{font-family:monospace;color:var(--text-muted)}.result-cell{text-align:right!important;font-family:Courier New,Courier,monospace}.category-summary{background:#f1f5f9}.total-row-main{background:#1e293b;color:#fff}.total-row-main td{padding:1.25rem!important;font-size:1.2rem}.action-cell{text-align:center!important}.delete-btn{width:24px;height:24px;display:flex;align-items:center;justify-content:center;padding:0}