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ease}.clear-chat-button:hover img{filter:brightness(1)}.close-button{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-secondary);transition:all .3s ease;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center}.close-button:hover{color:var(--text-primary);background:var(--bg-primary)}.chatbot-messages{flex:1;padding:1.5rem;overflow-y:auto;display:flex;flex-direction:column;gap:1rem;max-height:60vh}.chatbot-messages::-webkit-scrollbar{width:6px}.chatbot-messages::-webkit-scrollbar-track{background:var(--bg-secondary);border-radius:3px}.chatbot-messages::-webkit-scrollbar-thumb{background:var(--accent);border-radius:3px}.chatbot-messages::-webkit-scrollbar-thumb:hover{background:var(--accent-hover)}.welcome-message{background:var(--bg-secondary);color:var(--text-secondary);padding:1rem 1.25rem;border-radius:12px;border:1px solid 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button:disabled{opacity:.6;cursor:not-allowed;transform:none}.send-button:disabled{opacity:.5;cursor:not-allowed}.send-button:not(:disabled):hover{background:var(--accent-hover);transform:scale(1.05)}@media(max-width:768px){.chatbot-panel{max-width:none;height:100vh}.chatbot-toggle{bottom:1rem;right:1rem;width:50px;height:50px;font-size:1.25rem}.chatbot-messages{max-height:none;flex:1}.message{max-width:90%}.clear-chat-button{width:36px;height:36px}.clear-chat-button img{width:18px;height:18px}.close-button{width:36px;height:36px;font-size:1.6rem}}@media(max-width:480px){.chatbot-header,.chatbot-messages,.chatbot-input{padding:1rem 1.25rem}.message{padding:.75rem 1rem;font-size:.9rem}.clear-chat-button{width:34px;height:34px}.clear-chat-button img{width:16px;height:16px}.ai-avatar{width:24px;height:24px;font-size:.7rem}}.dark-mode .chatbot-input input{border-color:var(--border)}.dark-mode .message.ai{background:var(--bg-secondary);border-color:var(--border)}.dark-mode .clear-chat-button img{filter:brightness(1.2)}.dark-mode .clear-chat-button:hover img{filter:brightness(1.5)}:root{--bg-primary: #ffffff;--bg-secondary: #f8f9fa;--text-primary: #2d3748;--text-secondary: #4a5568;--accent: #3b82f6;--accent-hover: #2563eb;--border: #e2e8f0;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .1);--card-bg: #ffffff}.dark-mode{--bg-primary: #1a202c;--bg-secondary: #2d3748;--text-primary: #f7fafc;--text-secondary: #e2e8f0;--accent: #4299e1;--accent-hover: #3182ce;--border: #4a5568;--shadow: 0 4px 6px -1px rgba(0, 0, 0, .3);--card-bg: #2d3748}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;color:var(--text-primary);background-color:var(--bg-primary);transition:background-color .3s ease,color .3s ease}.app{min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:0 2rem}.section-title{font-size:2.5rem;font-weight:700;text-align:center;margin-bottom:1rem;color:var(--text-primary)}.section-subtitle{font-size:1.1rem;text-align:center;margin-bottom:3rem;color:var(--text-secondary)}.cta-button{background:var(--accent);color:#fff;border:none;padding:12px 30px;font-size:1rem;font-weight:600;border-radius:8px;cursor:pointer;transition:all .3s ease;text-decoration:none;display:inline-block}.cta-button:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:var(--shadow)}@media(max-width:768px){.container{padding:0 1rem}.section-title{font-size:2rem}}@keyframes fadeUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.fade-up{animation:fadeUp .6s ease-out}