:root{--primary-color:#4f46e5;--primary-hover:#4338ca;--bg-color:#f8fafc;--card-bg:#fff;--text-main:#1e293b;--text-muted:#64748b;--border-color:#e2e8f0;--success-color:#10b981;--warning-color:#f59e0b;--header-row-bg:#e0f2fe;--xaxis-col-bg:#dcfce7;--series-col-bg:#fef9c3;--shadow:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a}body{background-color:var(--bg-color);color:var(--text-main);margin:0;font-family:Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6}#app{max-width:1200px;margin:0 auto;padding:2rem}header{text-align:center;margin-bottom:3rem}header h1{background:linear-gradient(90deg,#4f46e5,#9333ea);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.5rem;font-size:2.5rem}header p{color:var(--text-muted)}.card{background:var(--card-bg);box-shadow:var(--shadow);border:1px solid var(--border-color);border-radius:1rem;margin-bottom:2rem;padding:2rem}.hidden{display:none!important}.tabs{border-bottom:1px solid var(--border-color);gap:.5rem;margin-bottom:1.5rem;padding-bottom:.5rem;display:flex}.tab-btn{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:.5rem;padding:.6rem 1.2rem;font-weight:600;transition:all .2s}.tab-btn.active{background:var(--primary-color);color:#fff}.tab-btn.highlight{color:#059669;background:#ecfdf5;border:1px solid #10b981;margin-left:auto}.input-area{width:100%}textarea{border:1px solid var(--border-color);resize:vertical;box-sizing:border-box;border-radius:.5rem;width:100%;height:150px;margin-bottom:1rem;padding:1rem;font-family:inherit}.full-width{width:100%;padding:1rem}.drop-zone:hover,.drop-zone--over{border-color:var(--primary-color);background:#eef2ff}.drop-zone__prompt{color:var(--text-muted);font-weight:500}.drop-zone__input{display:none}.section-header{justify-content:space-between;align-items:center;margin-bottom:1.5rem;display:flex}.guide-text{color:var(--warning-color);font-size:.9rem;font-weight:600}.mapping-modes{flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:1.5rem;display:flex}.mode-spacer{flex-grow:1;min-width:1rem}.mode-btn{border:1px solid var(--border-color);cursor:pointer;background:#fff;border-radius:.5rem;padding:.5rem 1rem;font-weight:500;transition:all .2s}.mode-btn.active{background:var(--primary-color);color:#fff;border-color:var(--primary-color)}.secondary-btn{border:1px solid var(--border-color);cursor:pointer;background:#f1f5f9;border-radius:.4rem;padding:.4rem .8rem;font-size:.85rem;font-weight:600}.secondary-btn.danger{color:#ef4444}.secondary-btn:hover{background:#e2e8f0}.guide-banner{color:#92400e;background:#fffbeb;border:1px solid #fde68a;border-radius:.5rem;margin-bottom:1rem;padding:.75rem;font-size:.9rem}.table-container{border:1px solid var(--border-color);border-radius:.5rem;max-height:400px;margin-bottom:1.5rem;overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:.85rem}th,td{border:1px solid var(--border-color);text-align:left;white-space:nowrap;cursor:pointer;padding:.75rem}tr:hover{background-color:#f8fafc}.row-header{background-color:var(--header-row-bg)!important}.col-xaxis{background-color:var(--xaxis-col-bg)!important}.col-series{background-color:var(--series-col-bg)!important}.selection-status{background:#f1f5f9;border-radius:.5rem;gap:2rem;padding:1rem;font-size:.9rem;font-weight:600;display:flex}.selection-status span{color:var(--primary-color)}.config-grid{grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem;margin-bottom:1.5rem;display:grid}.config-item{flex-direction:column;gap:.5rem;display:flex}.config-item label{font-size:.9rem;font-weight:600}.config-item input,.config-item select{border:1px solid var(--border-color);border-radius:.4rem;padding:.6rem}.toggle-item{flex-direction:row;grid-column:1/-1;align-items:center}.action-buttons{gap:1rem;margin-top:1rem;display:flex}.save-btn{border:1px solid var(--primary-color);color:var(--primary-color);background:#f8fafc;padding:1rem;font-size:1rem}.save-btn:hover{background:#eef2ff}.primary-btn{background:var(--primary-color);color:#fff;cursor:pointer;border:none;border-radius:.5rem;flex:2;padding:1rem;font-size:1.1rem;font-weight:600;transition:background .2s}.primary-btn:hover{background:var(--primary-hover)}#chart-container{width:100%;min-height:600px}#loading-overlay{z-index:1000;background:#fffc;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:fixed;top:0;left:0}.spinner{border:5px solid var(--border-color);border-top:5px solid var(--primary-color);border-radius:50%;width:50px;height:50px;margin-bottom:1rem;animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}footer{text-align:center;color:var(--text-muted);padding:2rem;font-size:.9rem}