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24px}.enhanced-language-card{height:86px;max-width:140px;min-width:110px}.enhanced-flag{font-size:28px}.language-title{font-size:11.5px}.enhanced-tab-button{height:88px}.tab-icon{font-size:24px;height:44px;width:44px}.tab-title{font-size:13px}.tab-subtitle{font-size:10px}}:root{--tutor-gradient:linear-gradient(135deg,#8b5cf6,#6366f1);--tutor-secondary-gradient:linear-gradient(135deg,#6366f1,#38bdf8);--tutor-accent-gradient:linear-gradient(135deg,#f43f5e,#fb923c);--tutor-success-gradient:linear-gradient(135deg,#10b981,#34d399);--tutor-warning-gradient:linear-gradient(135deg,#f59e0b,#fbbf24);--tutor-primary:#8b5cf6;--tutor-primary-dark:#7c3aed;--tutor-primary-light:rgba(139,92,246,.12);--tutor-accent:#f43f5e;--tutor-success:#10b981;--tutor-warning:#f59e0b;--chat-user-bg:rgba(99,102,241,.16);--chat-assistant-bg:rgba(139,92,246,.14);--chat-system-bg:rgba(16,185,129,.1);--chat-input-bg:rgba(99,102,241,.08);--tutor-shadow-glow:0 0 32px rgba(139,92,246,.45);--tutor-shadow-accent:0 0 22px rgba(244,63,94,.32);--tutor-shadow-message:0 4px 18px rgba(0,0,0,.35)}.tutor-mode-container{animation:fadeInUp .6s var(--transition-bounce);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:rgba(9,14,26,.97);background-attachment:fixed;background-image:radial-gradient(ellipse 65% 50% at 15% 30%,rgba(139,92,246,.2) 0,transparent 55%),radial-gradient(ellipse 55% 45% at 85% 15%,rgba(99,102,241,.16) 0,transparent 50%),radial-gradient(ellipse 50% 40% at 50% 95%,rgba(16,185,129,.08) 0,transparent 55%);border:1.5px solid rgba(139,92,246,.25);border-radius:var(--radius-xl);box-shadow:0 20px 60px rgba(0,0,0,.65),inset 0 0 0 1px rgba(139,92,246,.1);color:var(--text-primary);display:flex;flex-direction:column;height:90vh;margin:0 auto;max-height:90vh;max-width:1200px;overflow:hidden;padding:var(--space-xl);position:relative;width:100%}.tutor-mode-container:before{animation:rainbow-bar 5s linear infinite;background:linear-gradient(90deg,#6366f1,#8b5cf6,#ec4899,#8b5cf6,#6366f1);background-size:200% 100%;border-radius:var(--radius-xl) var(--radius-xl) 0 0;content:"";height:3px;left:0;position:absolute;right:0;top:0}@keyframes rainbow-bar{0%{background-position:0 0}to{background-position:200% 0}}.tutor-header{border-bottom:1px solid var(--glass-border);display:flex;flex-direction:column;margin-bottom:var(--space-lg);padding-bottom:var(--space-md);position:relative}.tutor-title{-webkit-text-fill-color:transparent;animation:slideDown .6s var(--transition-bounce);background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);background-clip:text;-webkit-background-clip:text;font-size:2rem;font-weight:800;margin:0 0 var(--space-md) 0;position:relative;text-align:center}.tutor-title:after{animation:expandWidth 1s var(--transition-bounce) .5s both;background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);border-radius:var(--radius-full);bottom:-8px;content:"";height:3px;left:50%;position:absolute;transform:translateX(-50%);width:80px}.mode-description{animation:fadeInUp .6s var(--transition-bounce) .2s both;-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);color:var(--text-secondary);font-size:1rem;line-height:1.6;margin-bottom:var(--space-sm);padding:var(--space-md);text-align:center}.tutor-content{display:flex;flex:1 1;flex-direction:column;gap:var(--space-lg);overflow:hidden;position:relative}.tutor-footer{border-top:1px solid var(--glass-border);margin-top:var(--space-lg);padding-top:var(--space-md);text-align:center}.close-tutor-button{background:linear-gradient(135deg,#f43f5e,#fb923c);background:var(--tutor-accent-gradient);border:none;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);color:#fff;cursor:pointer;font-size:1rem;font-weight:600;letter-spacing:.5px;min-width:200px;overflow:hidden;padding:var(--space-md) var(--space-xl);position:relative;text-transform:uppercase;transition:all var(--transition-normal)}.close-tutor-button:before{background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.3),transparent);content:"";height:100%;left:-100%;position:absolute;top:0;transition:left var(--transition-slow);width:100%}.close-tutor-button:hover{box-shadow:var(--shadow-lg),0 0 22px rgba(244,63,94,.32);box-shadow:var(--shadow-lg),var(--tutor-shadow-accent);transform:translateY(-3px)}.close-tutor-button:hover:before{left:100%}.tutor-intro{align-items:center;animation:fadeIn .5s ease;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);background:var(--bg-overlay);border-radius:var(--radius-xl);bottom:0;display:flex;flex-direction:column;justify-content:center;left:0;overflow-y:auto;padding:var(--space-xl);position:absolute;right:0;top:0}.tutor-intro-content{animation:zoomIn .8s var(--transition-bounce);max-width:600px;text-align:center}.tutor-intro h1{-webkit-text-fill-color:transparent;background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);background-clip:text;-webkit-background-clip:text;font-size:2.5rem;font-weight:800;margin-bottom:var(--space-xl);position:relative}.tutor-intro h1:after{animation:bounce 2s infinite;content:"🎓";font-size:2rem;position:absolute;right:-50px;top:0}.tutor-intro p{color:var(--text-secondary);font-size:1.1rem;line-height:1.7;margin-bottom:var(--space-xl)}.tutor-intro-modes{grid-gap:var(--space-lg);display:grid;gap:var(--space-lg);grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin-bottom:var(--space-xl);width:100%}.tutor-intro-mode{animation:fadeInUp .6s var(--transition-bounce);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);cursor:pointer;overflow:hidden;padding:var(--space-xl);position:relative;transition:all var(--transition-normal)}.tutor-intro-mode:before{background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);content:"";height:3px;left:0;opacity:0;position:absolute;right:0;top:0;transition:opacity var(--transition-normal)}.tutor-intro-mode:hover{border-color:#8b5cf6;border-color:var(--tutor-primary);box-shadow:var(--shadow-lg),0 0 32px rgba(139,92,246,.45);box-shadow:var(--shadow-lg),var(--tutor-shadow-glow);transform:translateY(-5px) scale(1.02)}.tutor-intro-mode:hover:before{opacity:1}.tutor-intro-icon{animation:pulse 2s infinite;display:block;font-size:3rem;margin-bottom:var(--space-lg)}.tutor-intro-mode h3{-webkit-text-fill-color:transparent;background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);background-clip:text;-webkit-background-clip:text;color:var(--text-primary);font-size:1.3rem;font-weight:700;margin-bottom:var(--space-md)}.tutor-intro-mode p{color:var(--text-muted);font-size:1rem;line-height:1.6;margin:0}.skip-intro-button{background:linear-gradient(135deg,#6366f1,#38bdf8);background:var(--tutor-secondary-gradient);border:none;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);color:#fff;cursor:pointer;font-size:1.1rem;font-weight:600;letter-spacing:.5px;min-width:200px;overflow:hidden;padding:var(--space-lg) var(--space-2xl);position:relative;text-transform:uppercase;transition:all var(--transition-normal)}.skip-intro-button:before{background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.3),transparent);content:"";height:100%;left:-100%;position:absolute;top:0;transition:left var(--transition-slow);width:100%}.skip-intro-button:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}.skip-intro-button:hover:before{left:100%}.tutor-free-mode{display:flex;flex:1 1;flex-direction:column;gap:var(--space-lg);overflow:hidden}.topic-selection{animation:fadeInUp .6s var(--transition-bounce);text-align:center}.topic-selection h3{-webkit-text-fill-color:transparent;background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);background-clip:text;-webkit-background-clip:text;font-size:1.5rem;font-weight:700;margin-bottom:var(--space-lg);position:relative}.topic-selection h3:before{content:"💡";font-size:1.3rem;margin-right:var(--space-sm)}.topic-grid{grid-gap:var(--space-md);background:hsla(0,0%,100%,.02);border-radius:var(--radius-lg);display:grid;gap:var(--space-md);grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-top:var(--space-md);max-height:40vh;overflow-y:auto;padding:var(--space-sm)}.topic-grid::-webkit-scrollbar{width:8px}.topic-grid::-webkit-scrollbar-track{background:hsla(0,0%,100%,.05);border-radius:var(--radius-full)}.topic-grid::-webkit-scrollbar-thumb{background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);border-radius:var(--radius-full)}.topic-card{align-items:center;animation:fadeInUp .6s var(--transition-bounce);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);cursor:pointer;display:flex;flex-direction:column;gap:var(--space-sm);justify-content:center;min-height:120px;overflow:hidden;padding:var(--space-lg);position:relative;text-align:center;transition:all var(--transition-normal)}.topic-card:before{background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);content:"";height:2px;left:0;opacity:0;position:absolute;right:0;top:0;transition:opacity var(--transition-normal)}.topic-card:hover{border-color:#8b5cf6;border-color:var(--tutor-primary);box-shadow:var(--shadow-lg),0 0 32px rgba(139,92,246,.45);box-shadow:var(--shadow-lg),var(--tutor-shadow-glow);transform:translateY(-5px) scale(1.02)}.topic-card:hover:before{opacity:1}.topic-icon{font-size:2.5rem;margin-bottom:var(--space-sm);transition:transform var(--transition-normal)}.topic-card:hover .topic-icon{transform:scale(1.1)}.topic-name{color:var(--text-primary);font-size:1rem;font-weight:700;margin-bottom:var(--space-xs)}.topic-description{color:var(--text-muted);font-size:.85rem;line-height:1.4}.custom-topic{border-color:#8b5cf6;border-color:var(--tutor-primary);border-style:dashed}.custom-topic:hover{border-style:solid}.custom-topic-input{animation:slideInUp .5s var(--transition-bounce);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);margin-bottom:var(--space-lg);padding:var(--space-lg)}.custom-topic-input input{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:hsla(0,0%,100%,.08);border:2px solid hsla(0,0%,100%,.1);border-radius:var(--radius-md);color:var(--text-primary);font-size:1rem;font-weight:500;margin-bottom:var(--space-md);padding:var(--space-md);transition:all var(--transition-normal);width:100%}.custom-topic-input input:focus{border-color:#8b5cf6;border-color:var(--tutor-primary);box-shadow:0 0 0 4px rgba(155,89,182,.2),0 0 32px rgba(139,92,246,.45);box-shadow:0 0 0 4px rgba(155,89,182,.2),var(--tutor-shadow-glow);outline:none;transform:translateY(-2px)}.custom-topic-input input::placeholder{color:var(--text-muted)}.custom-topic-buttons{display:flex;gap:var(--space-md);justify-content:center}.custom-topic-buttons button{background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);border:none;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);color:#fff;cursor:pointer;flex:1 1;font-size:.9rem;font-weight:600;max-width:120px;padding:var(--space-sm) var(--space-lg);transition:all var(--transition-normal)}.custom-topic-buttons button:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.custom-topic-buttons button:last-child{background:linear-gradient(135deg,#f43f5e,#fb923c);background:var(--tutor-accent-gradient)}.chat-area{animation:fadeInUp .6s var(--transition-bounce) .3s both;-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);flex:1 1;flex-direction:column}.chat-area,.selected-topic{display:flex;overflow:hidden;position:relative}.selected-topic{align-items:center;background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);border-bottom:1px solid var(--glass-border);color:#fff;padding:var(--space-md)}.selected-topic:before{animation:shimmer 3s infinite;background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.2),transparent);content:"";height:100%;left:-100%;position:absolute;top:0;width:100%}.selected-topic .topic-icon{font-size:1.2rem;margin-bottom:0;margin-right:var(--space-sm)}.selected-topic .topic-name{color:#fff;flex:1 1;font-size:1rem;font-weight:700;margin-bottom:0}.change-topic-button{background:hsla(0,0%,100%,.2);border:1px solid hsla(0,0%,100%,.3);border-radius:var(--radius-md);color:#fff;cursor:pointer;font-size:.8rem;font-weight:600;letter-spacing:.3px;padding:var(--space-xs) var(--space-sm);text-transform:uppercase;transition:all var(--transition-normal)}.change-topic-button:hover{background:hsla(0,0%,100%,.3);transform:translateY(-1px)}.chat-container{-webkit-overflow-scrolling:touch;background:hsla(0,0%,100%,.02);display:flex;flex:1 1;flex-direction:column;gap:var(--space-md);overflow-y:auto;padding:var(--space-lg)}.chat-container::-webkit-scrollbar{width:6px}.chat-container::-webkit-scrollbar-track{background:hsla(0,0%,100%,.05);border-radius:var(--radius-full)}.chat-container::-webkit-scrollbar-thumb{background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);border-radius:var(--radius-full)}.chat-container::-webkit-scrollbar-thumb:hover{background:linear-gradient(135deg,#6366f1,#38bdf8);background:var(--tutor-secondary-gradient)}.chat-message{align-items:flex-start;animation:slideInUp .3s ease;display:flex;gap:var(--space-sm);margin-bottom:var(--space-md)}.user-message{flex-direction:row-reverse;justify-content:flex-end}.assistant-message{justify-content:flex-start}.system-message{justify-content:center;margin:var(--space-lg) 0}.message-avatar{align-items:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid var(--glass-border);border-radius:var(--radius-full);box-shadow:var(--shadow-sm);display:flex;flex-shrink:0;font-size:1.2rem;height:40px;justify-content:center;width:40px}.user-message .message-avatar{background:rgba(99,102,241,.16);background:var(--chat-user-bg);border-color:rgba(52,152,219,.3)}.assistant-message .message-avatar{background:rgba(139,92,246,.14);background:var(--chat-assistant-bg);border-color:rgba(155,89,182,.3)}.message-content{-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:0 4px 18px rgba(0,0,0,.35);box-shadow:var(--tutor-shadow-message);max-width:75%;padding:var(--space-md);position:relative;transition:all var(--transition-normal);word-break:break-word}.message-content:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}.user-message .message-content{background:rgba(99,102,241,.16);background:var(--chat-user-bg);border-bottom-right-radius:var(--radius-sm);border-color:rgba(52,152,219,.3)}.user-message .message-content:after{border:8px solid transparent;border-bottom:0;border-left:8px solid var(--chat-user-bg);border-right:0;bottom:0;content:"";height:0;position:absolute;right:-8px;width:0}.assistant-message .message-content{background:rgba(139,92,246,.14);background:var(--chat-assistant-bg);border-bottom-left-radius:var(--radius-sm);border-color:rgba(155,89,182,.3)}.assistant-message .message-content:after{border:8px solid transparent;border-bottom:0;border-left:0;border-right:8px solid var(--chat-assistant-bg);bottom:0;content:"";height:0;left:-8px;position:absolute;width:0}.system-message .message-content{background:rgba(16,185,129,.1);background:var(--chat-system-bg);border-color:rgba(46,204,113,.3);border-radius:var(--radius-lg);color:var(--text-muted);font-size:.85rem;max-width:60%;padding:var(--space-sm) var(--space-md);text-align:center}.message-text{color:var(--text-primary);font-size:.95rem;line-height:1.6;margin:0}.message-time{color:var(--text-muted);font-size:.7rem;margin-top:var(--space-xs);text-align:right}.user-message .message-time{text-align:left}.message-actions{display:flex;gap:var(--space-xs);justify-content:flex-end;margin-top:var(--space-sm)}.feedback-button,.speak-button{align-items:center;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;display:flex;font-size:1rem;height:28px;justify-content:center;padding:var(--space-xs);transition:all var(--transition-normal);width:28px}.feedback-button:hover,.speak-button:hover{background:rgba(155,89,182,.1);color:#8b5cf6;color:var(--tutor-primary);transform:scale(1.1)}.speak-button:disabled{color:hsla(0,0%,100%,.3);cursor:not-allowed;transform:none}.feedback-button:hover{background:rgba(231,76,60,.1);color:#f43f5e;color:var(--tutor-accent)}.typing-indicator{animation:slideInUp .3s ease;border:1px solid rgba(155,89,182,.3);border-radius:var(--radius-lg);box-shadow:0 4px 18px rgba(0,0,0,.35);box-shadow:var(--tutor-shadow-message);margin-bottom:var(--space-md);padding:var(--space-md);width:fit-content}.typing-avatar,.typing-indicator{align-items:center;background:rgba(139,92,246,.14);background:var(--chat-assistant-bg);display:flex}.typing-avatar{border:2px solid rgba(155,89,182,.3);border-radius:var(--radius-full);font-size:1rem;height:32px;justify-content:center;width:32px}.typing-avatar,.typing-name{margin-right:var(--space-sm)}.typing-name{color:var(--text-muted);font-size:.8rem;font-weight:600}.typing-dots{display:flex;gap:var(--space-xs)}.typing-dot{animation:typingAnimation 1.5s ease-in-out infinite;background:#8b5cf6;background:var(--tutor-primary);border-radius:var(--radius-full);height:8px;width:8px}.typing-dot:nth-child(2){animation-delay:.3s}.typing-dot:nth-child(3){animation-delay:.6s}@keyframes typingAnimation{0%,to{opacity:.5;transform:translateY(0)}50%{opacity:1;transform:translateY(-6px)}}.input-area{grid-gap:var(--space-sm);align-items:flex-end;-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:var(--glass-bg);border-top:1px solid var(--glass-border);display:grid;gap:var(--space-sm);grid-template-columns:auto 1fr auto;padding:var(--space-lg);position:relative}.input-area:before{background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);content:"";height:1px;left:0;opacity:.5;position:absolute;right:0;top:0}.voice-input-button{align-items:center;-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:var(--glass-bg);border:2px solid var(--glass-border);border-radius:var(--radius-full);box-shadow:var(--shadow-sm);color:var(--text-primary);cursor:pointer;display:flex;font-size:1.3rem;height:48px;justify-content:center;overflow:hidden;position:relative;transition:all var(--transition-normal);width:48px}.voice-input-button:before{background:linear-gradient(135deg,#f43f5e,#fb923c);background:var(--tutor-accent-gradient);border-radius:var(--radius-full);bottom:0;content:"";left:0;opacity:0;position:absolute;right:0;top:0;transition:opacity var(--transition-normal)}.voice-input-button:hover{border-color:#8b5cf6;border-color:var(--tutor-primary);box-shadow:var(--shadow-md),0 0 32px rgba(139,92,246,.45);box-shadow:var(--shadow-md),var(--tutor-shadow-glow);transform:translateY(-2px) scale(1.05)}.voice-input-button.listening{animation:pulseRecord 1.5s infinite;background:linear-gradient(135deg,#f43f5e,#fb923c);background:var(--tutor-accent-gradient);border-color:#f43f5e;border-color:var(--tutor-accent);box-shadow:var(--shadow-lg),0 0 22px rgba(244,63,94,.32);box-shadow:var(--shadow-lg),var(--tutor-shadow-accent)}.voice-input-button.listening:before{opacity:.2}.message-input{-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:rgba(99,102,241,.08);background:var(--chat-input-bg);border:2px solid var(--glass-border);border-radius:var(--radius-lg);color:var(--text-primary);font-family:inherit;font-size:1rem;font-weight:500;line-height:1.5;max-height:120px;min-height:48px;padding:var(--space-md);resize:none;transition:all var(--transition-normal)}.message-input:focus{background:hsla(0,0%,100%,.12);border-color:#8b5cf6;border-color:var(--tutor-primary);box-shadow:0 0 0 4px rgba(155,89,182,.2),0 0 32px rgba(139,92,246,.45);box-shadow:0 0 0 4px rgba(155,89,182,.2),var(--tutor-shadow-glow);outline:none;transform:translateY(-2px)}.message-input::placeholder{color:var(--text-muted);font-weight:400}.send-button{align-items:center;background:linear-gradient(135deg,#8b5cf6,#6366f1);background:var(--tutor-gradient);border:none;border-radius:var(--radius-full);box-shadow:var(--shadow-md);color:#fff;cursor:pointer;display:flex;font-size:1.3rem;height:48px;justify-content:center;overflow:hidden;position:relative;transition:all var(--transition-normal);width:48px}.send-button:before{background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.3),transparent);content:"";height:100%;left:-100%;position:absolute;top:0;transition:left var(--transition-slow);width:100%}.send-button:after{content:"➤";position:relative;transition:transform var(--transition-normal);z-index:2}.send-button:hover{box-shadow:var(--shadow-lg),0 0 32px rgba(139,92,246,.45);box-shadow:var(--shadow-lg),var(--tutor-shadow-glow);transform:translateY(-3px) scale(1.05)}.send-button:hover:before{left:100%}.send-button:hover:after{transform:translateX(2px)}.send-button:disabled{background:rgba(155,89,182,.3);box-shadow:var(--shadow-sm);cursor:not-allowed;transform:none}.send-button:disabled:before{display:none}.feedback-container{animation:slideInUp .5s var(--transition-bounce);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);background:var(--glass-bg);border:1px solid rgba(231,76,60,.3);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);margin-top:var(--space-md);overflow:hidden}.feedback-header{align-items:center;background:linear-gradient(135deg,#f43f5e,#fb923c);background:var(--tutor-accent-gradient);color:#fff;display:flex;justify-content:space-between;overflow:hidden;padding:var(--space-md);position:relative}.feedback-header:before{animation:shimmer 3s 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