:root{--bg-color: #1a1a1a;--surface-color: #2a2a2a;--text-color: #e0e0e0;--border-color: #404040;--primary-color: #646cff;--primary-hover: #535bf2;--error-color: #ff4d4f;--success-color: #52c41a}body{margin:0;min-width:320px;min-height:100vh;background-color:var(--bg-color);color:var(--text-color);font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:var(--surface-color);color:var(--text-color);border-color:var(--border-color);cursor:pointer;transition:border-color .25s}button:hover{border-color:var(--primary-color)}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}h1,h2,h3{margin-top:0}.card{padding:2em;background-color:var(--surface-color);border-radius:8px;margin-bottom:2em;border:1px solid var(--border-color)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-color)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#555}.app-container{max-width:1400px;margin:0 auto;padding:2rem}.header{text-align:center;margin-bottom:2rem}.main-grid{display:grid;grid-template-columns:400px 1fr;gap:2rem;align-items:start}@media(max-width:900px){.main-grid{grid-template-columns:1fr}}.left-column{display:flex;flex-direction:column}.right-column{min-width:0}.drop-zone{border:2px dashed var(--border-color);border-radius:8px;padding:3rem;text-align:center;cursor:pointer;transition:border-color .3s}.drop-zone:hover,.drop-zone.active{border-color:var(--primary-color);background-color:#646cff0d}.error-message{color:var(--error-color);margin-top:1rem;padding:1rem;border:1px solid var(--error-color);border-radius:4px;background-color:#ff4d4f1a}.sort-list{list-style:none;padding:0;margin:0}.sortable-item{background-color:#333;padding:.8rem;margin-bottom:.5rem;border-radius:4px;cursor:grab;border:1px solid #444;display:flex;align-items:center;justify-content:space-between}.sortable-item:active{cursor:grabbing}.drag-handle{cursor:grab;padding-right:10px;color:#888;font-weight:700}.item-text{flex-grow:1}.delete-button{background:none;border:none;color:#ff4d4f;cursor:pointer;font-size:1.2rem;padding:0 .5rem;line-height:1}.delete-button:hover{background-color:#ff4d4f1a;border-radius:50%}.controls{display:flex;gap:.5rem;margin-bottom:1rem;flex-wrap:wrap}.controls button{padding:.5em .8em;font-size:.9em}.preview-table{width:100%;border-collapse:collapse;margin-top:1rem;font-size:.9rem}.preview-table th,.preview-table td{border:1px solid var(--border-color);padding:.5rem;text-align:left}.preview-table th{background-color:#222}.preview-scroll{max-height:600px;overflow-y:auto;border:1px solid var(--border-color)}.placeholder{min-height:300px;display:flex;flex-direction:column;justify-content:center;align-items:center}