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50%;transform:scale(1)}50%{background-position:100% 50%;transform:scale(1.02)}}.scrambled-sentence-area{background:#0000004d;border:1px dashed rgba(255,255,255,.3);border-radius:12px;padding:1.5rem;margin-bottom:1.5rem}.scrambled-words-display{display:flex;flex-wrap:wrap;gap:.75rem;margin-bottom:1.5rem;justify-content:center;min-height:80px;background:#ffffff0d;border-radius:8px;padding:1rem}.scrambled-word-chip{background:linear-gradient(45deg,#f97316,#f59e0b);color:#fff;padding:.6rem 1rem;border-radius:20px;cursor:pointer;box-shadow:0 2px 8px #0000004d;transition:all .2s ease;font-weight:500;-webkit-user-select:none;-moz-user-select:none;user-select:none}.scrambled-word-chip:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 4px 12px #0006}.arranged-sentence-display{min-height:100px;border:1px dashed var(--primary-yellow);background-color:#ffcc001a;border-radius:8px;padding:1rem;display:flex;flex-wrap:wrap;gap:.5rem;align-items:center;margin-bottom:1.5rem}.arranged-word-chip{background:linear-gradient(45deg,#f59e0b,#fbbf24);color:var(--text-dark);padding:.6rem 1rem;border-radius:20px;cursor:pointer;box-shadow:0 2px 8px #0000004d;transition:all .2s ease;font-weight:500;-webkit-user-select:none;-moz-user-select:none;user-select:none}.arranged-word-chip:hover{transform:translateY(-2px) scale(1.02);box-shadow:0 4px 12px #0006}.feedback-message{margin-top:1.5rem;padding:1rem 1.5rem;border-radius:12px;font-weight:700;font-size:1.1rem;text-align:center;animation:feedbackSlideIn .6s ease-out;box-shadow:0 4px 16px #0000004d;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:2px 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#00000026;transform:translateY(-1px)}.email-section-button:active{background:linear-gradient(135deg,#004bb5,#003d99);box-shadow:0 1px 2px #0003;transform:translateY(0)}.email-section-content{padding:16px;background:#ffffff03}.essay-sections{display:flex;flex-direction:column;gap:16px}.essay-section{margin-bottom:20px;padding:16px;background:#ffffff0d;border-radius:12px;border:1px solid rgba(255,255,255,.1);backdrop-filter:blur(10px)}.essay-section-header{margin-bottom:12px}.essay-section-button{padding:8px 16px;border:none;border-radius:8px;font-weight:600;font-size:14px;cursor:pointer;transition:all .3s ease;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 2px 8px #667eea4d;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,sans-serif;letter-spacing:-.01em}.essay-section-button:hover{transform:translateY(-1px);box-shadow:0 4px 12px #667eea66}.essay-section-content{padding:12px 0}.control-button,.hint-button,.mode-toggle-button,.remove-all-button{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;word-break:keep-all;hyphens:none}.control-button{background:linear-gradient(135deg,#007aff,#0056cc);color:#fff;padding:12px 24px;border-radius:12px;font-weight:600;font-size:14px;cursor:pointer;transition:all .2s ease;box-shadow:0 1px 3px #0000001f,0 1px 2px #0000003d;border:none;position:relative;overflow:hidden;min-width:80px;height:44px;display:flex;align-items:center;justify-content:center;text-transform:none;letter-spacing:-.01em;line-height:1.2;white-space:nowrap;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,sans-serif}.control-button:hover{background:linear-gradient(135deg,#0056cc,#004bb5);box-shadow:0 4px 8px #00000026,0 2px 4px #0000001f;transform:translateY(-1px)}.control-button:active{background:linear-gradient(135deg,#004bb5,#003d99);box-shadow:0 1px 2px #0003;transform:translateY(0)}.control-button:disabled{background:#555;cursor:not-allowed;box-shadow:none;transform:none}.vocabulary-section{margin-top:2rem;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:1.5rem}.vocabulary-section h3{font-size:1.4rem;font-weight:600;color:var(--primary-blue);margin-bottom:1rem}.vocabulary-list{display:flex;flex-wrap:wrap;gap:.75rem}.vocabulary-item{background:#0000004d;border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:.6rem 1rem;font-size:.9rem;color:#ddd}.vocabulary-item strong{color:var(--text-light)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.right-inner-3col{display:flex;gap:1rem;height:100%}.middle-pane{flex:.65;min-width:0;display:flex;flex-direction:column;overflow:hidden}.practice-pane{flex:.35;min-width:260px;max-width:480px;background:#ffffff0d;border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:1rem;overflow-y:auto}.middle-pane .task-content-box{max-height:50vh;overflow-y:auto}.practice-pane .draggable-words,.practice-pane .scrambled-words-display,.practice-pane .arranged-sentence-display{margin:.5rem 0}@media(max-width:1024px){.right-inner-3col{flex-direction:column}.practice-pane{max-width:none;min-width:unset}}body{background:#f0f2f5}