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textarea:focus{outline:none;border-color:var(--primary)}.input-area textarea::placeholder{color:var(--text-muted)}.send-button{background:var(--primary);color:var(--bg-darker);border:none;border-radius:24px;padding:.8rem 1.5rem;font-weight:600;transition:all .2s;flex-shrink:0}.send-button:hover:not(:disabled){background:var(--primary-dark)}.send-button:disabled{opacity:.5;cursor:not-allowed}@media (max-width:600px){.companion-main{padding:0}.chat-container{height:100vh;border-radius:0;border:none}.scenario-grid{grid-template-columns:1fr 1fr}.header-controls{display:none}}.validation-panel{background:rgba(0,0,0,.4);border:1px solid rgba(212,175,55,.3);border-radius:12px;margin:.5rem 1rem;padding:1rem;max-height:300px;overflow-y:auto}.validation-loading{display:flex;align-items:center;justify-content:center;gap:.75rem;color:var(--primary);padding:1rem}.validation-spinner{width:20px;height:20px;border:2px solid rgba(212,175,55,.2);border-top:2px solid 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.5rem}.close-validation:hover{color:var(--text-light)}.validation-details{display:flex;flex-direction:column;gap:.75rem}.validation-section{background:rgba(0,0,0,.2);border-radius:8px;padding:.75rem}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem;font-weight:600;color:var(--text-light)}.section-score{color:var(--primary);font-size:.9rem}.no-issues{color:#4ade80;margin:0;font-size:.9rem}.issues-list,.suggestions-list{display:flex;flex-direction:column;gap:.5rem}.issue-item,.suggestion-item{background:rgba(239,68,68,.1);border-left:3px solid #ef4444;padding:.5rem .75rem;border-radius:0 4px 4px 0}.issue-original,.sug-used{color:#f87171;text-decoration:line-through}.issue-arrow,.sug-arrow{color:var(--text-muted);margin:0 .5rem}.issue-correction,.sug-better{color:#4ade80;font-weight:600}.issue-explanation,.sug-reason{color:var(--text-muted);font-size:.85rem;margin:.25rem 0 0}.comprehension-feedback,.pronunciation-feedback{color:var(--text-light);margin:0;font-size:.9rem}.validation-encouragement{background:rgba(74,222,128,.1);border:1px solid rgba(74,222,128,.3);border-radius:8px;padding:.75rem;color:#4ade80;text-align:center;font-weight:500}.validation-toggle{background:rgba(74,222,128,.1);border:1px solid rgba(74,222,128,.3);border-radius:4px;padding:.25rem .5rem}.validation-toggle input:checked+span{color:#4ade80}@media (max-width:600px){.validation-panel{margin:.5rem;max-height:250px}.score-badge{width:40px;height:40px;font-size:1rem}}