.rephraser-result-box{min-height:80px;padding:1rem 1.25rem;border-radius:10px;background:#f8f9fa;border:1px solid #e9ecef;font-size:1rem;line-height:1.7;word-break:break-word}.rephraser-result-box.has-result{background:#fff;border-color:#dee2e6}.word-replaced{color:#1a6fc4;background:#dbeafe;border-radius:3px;padding:0 3px;font-weight:600}.word-added{color:#166534;background:#dcfce7;border-radius:3px;padding:0 3px;text-decoration:underline;font-weight:600}.word-removed{color:#991b1b;background:#fee2e2;border-radius:3px;padding:0 3px;text-decoration:line-through}.word-structural{color:#14532d;background:#bbf7d0;border-radius:3px;padding:0 3px;font-weight:600}.grammar-explanation-box{background:linear-gradient(135deg,#f0f9ff 0,#f8fafc 100%);border:1px solid #bae6fd;border-radius:12px;padding:1.25rem 1.5rem}.grammar-explanation-box .expl-row{display:flex;gap:.5rem;align-items:flex-start;margin-bottom:.5rem;font-size:.92rem}.grammar-explanation-box .expl-label{font-weight:700;color:#0369a1;min-width:90px;flex-shrink:0}.grammar-explanation-box .expl-value{color:#1e293b}.grammar-explanation-box .expl-rule{margin-top:.75rem;padding-top:.75rem;border-top:1px solid #bae6fd}.grammar-explanation-box .expl-rule .expl-label{color:#7c3aed}.grammar-explanation-box .expl-explanation p{font-size:.9rem;color:#374151;margin:0;line-height:1.6}.highlight-legend{display:flex;flex-wrap:wrap;gap:.5rem 1rem;margin-top:.75rem}.legend-item{display:flex;align-items:center;gap:6px;font-size:.82rem;color:#4b5563}.legend-swatch{width:22px;height:14px;border-radius:3px;display:inline-block}.legend-swatch.replaced{background:#dbeafe;border:1px solid #93c5fd}.legend-swatch.added{background:#dcfce7;border:1px solid #86efac;text-decoration:underline}.legend-swatch.removed{background:#fee2e2;border:1px solid #fca5a5}.legend-swatch.structural{background:#bbf7d0;border:1px solid #4ade80}.difficulty-selector{display:flex;gap:.5rem;flex-wrap:wrap}.difficulty-btn{flex:1;min-width:100px;padding:.5rem .75rem;border:2px solid #e2e8f0;border-radius:8px;background:#f8fafc;color:#475569;font-size:.85rem;font-weight:500;cursor:pointer;text-align:center;transition:border-color .2s,color .2s,background-color .2s}.difficulty-btn:hover{border-color:#6366f1;color:#6366f1;background:#eef2ff}.difficulty-btn.active{border-color:#6366f1;background:#6366f1;color:#fff;font-weight:600}.mode-check-label{display:flex;align-items:center;gap:.5rem;padding:.4rem .75rem;border:1px solid #e2e8f0;border-radius:8px;cursor:pointer;font-size:.88rem;transition:background .15s,border-color .15s;margin-bottom:.4rem;color:#374151}.mode-check-label:hover{background:#f1f5f9;border-color:#94a3b8}.mode-check-label input[type=checkbox]{accent-color:#6366f1;width:16px;height:16px;flex-shrink:0}.mode-check-label.disabled-mode{opacity:.45;pointer-events:none}.char-counter-bar{font-size:.8rem;color:#94a3b8;text-align:right;margin-top:.3rem}.char-counter-bar.near-limit{color:#f59e0b;font-weight:600}.char-counter-bar.at-limit{color:#ef4444;font-weight:700}.rephraser-alert{display:none;padding:.6rem 1rem;border-radius:8px;font-size:.88rem;margin-top:.5rem}.rephraser-alert.show{display:block}.rephraser-alert.alert-warning{background:#fef3c7;color:#92400e;border:1px solid #fcd34d}.rephraser-alert.alert-danger{background:#fee2e2;color:#991b1b;border:1px solid #fca5a5}.btn-rephrase{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;border:none;border-radius:10px;padding:.65rem 1.5rem;font-size:.95rem;font-weight:600;width:100%;transition:opacity .2s,transform .1s}.btn-rephrase:hover{opacity:.92;transform:translateY(-1px)}.btn-rephrase:active{transform:translateY(0)}@media (min-width:992px){.rephraser-sticky{position:sticky;top:2rem}}