:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto 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#667eea26}.password-modal-error{color:#dc2626;font-size:.9rem;text-align:left}.password-modal button{padding:.875rem 1rem;border:none;border-radius:10px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:1rem;font-weight:600;cursor:pointer}.password-modal button:disabled{opacity:.6;cursor:not-allowed}.chat-widget-button{position:fixed;bottom:20px;right:20px;width:60px;height:60px;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 20px #00000026;transition:all .3s ease;z-index:1000}.chat-widget-button:hover{transform:scale(1.05);box-shadow:0 6px 25px #0003}.chat-icon{font-size:24px;color:#fff}.notification-badge{position:absolute;top:-5px;right:-5px;width:20px;height:20px;background:#ff4757;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;color:#fff}.chat-widget{position:fixed;bottom:90px;right:20px;width:350px;height:500px;background:#fff;border-radius:12px;box-shadow:0 8px 32px #0000001a;display:flex;flex-direction:column;z-index:1000;overflow:hidden;animation:slideUp .3s ease-out;transition:width .25s ease,height .25s ease,top .25s ease,left .25s ease,right .25s ease,bottom .25s ease,border-radius .25s ease}.chat-widget.fullscreen{inset:0;width:100vw;height:100vh;height:100dvh;border-radius:0;animation:none}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.chat-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:16px 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svg{width:14px;height:14px}.new-thread-btn:hover:not(:disabled){background:#ffffff47;border-color:#ffffffb3}.new-thread-btn:disabled{opacity:.5;cursor:not-allowed}.fullscreen-toggle-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:1px solid rgba(255,255,255,.45);border-radius:999px;background:#ffffff26;color:#fff;cursor:pointer;transition:background .2s,border-color .2s}.fullscreen-toggle-btn svg{width:16px;height:16px}.fullscreen-toggle-btn:hover{background:#ffffff47;border-color:#ffffffb3}.chat-messages{flex:1;padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:12px}.welcome-message{text-align:center;color:#666;font-style:italic;padding:20px}.message{max-width:80%;animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.user-message{align-self:flex-end}.bot-message{align-self:flex-start}.message-content{padding:12px 16px;border-radius:18px;word-wrap:break-word;white-space:pre-wrap}.user-message .message-content{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.bot-message .message-content{background:#f1f1f1;color:#333}.message-timestamp{font-size:10px;color:#999;margin-top:4px;text-align:right}.user-message .message-timestamp{text-align:right}.bot-message .message-timestamp{text-align:left;margin-top:2px}.voice-error-banner{padding:8px 16px;font-size:12px;color:#c0392b;background:#fdecea;border-top:1px solid #f5c6cb}.chat-input{padding:16px;border-top:1px solid #eee;display:flex;gap:8px;align-items:flex-end}.mic-button{flex-shrink:0;width:44px;height:44px;padding:0;border:1px solid #ddd;border-radius:50%;background:#fff;color:#667eea;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s}.mic-button:hover:not(:disabled){border-color:#667eea;background:#f8f7ff}.mic-button:disabled{opacity:.5;cursor:not-allowed}.mic-button.recording{background:#ff4757;border-color:#ff4757;color:#fff;animation:mic-pulse 1.2s ease-in-out infinite}@keyframes mic-pulse{0%,to{box-shadow:0 0 #ff475773}50%{box-shadow:0 0 0 8px #ff475700}}.mic-icon{width:22px;height:22px}.mic-spinner{width:20px;height:20px;border:2px solid rgba(102,126,234,.25);border-top-color:#667eea;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.message-speak-btn{margin-top:6px;padding:4px;border:none;background:transparent;color:#888;cursor:pointer;border-radius:6px;line-height:0;transition:color .2s,background .2s}.message-speak-btn:hover{color:#667eea;background:#667eea14}.message-speak-btn.playing{color:#667eea}.speak-icon{width:18px;height:18px;display:block}.chat-input textarea{flex:1;padding:12px 16px;border:1px solid #ddd;border-radius:20px;resize:none;font-family:inherit;font-size:14px;outline:none;transition:border-color .2s}.chat-input textarea:focus{border-color:#667eea}.send-button{padding:12px 20px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:20px;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s}.send-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #667eea4d}.send-button:disabled{opacity:.5;cursor:not-allowed}@media(max-width:480px){.chat-widget:not(.fullscreen){width:calc(100vw - 40px);height:calc(100vh - 120px);bottom:80px;right:20px}.chat-widget-button{bottom:20px;right:20px}}.topic-modal-overlay{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem;background:linear-gradient(135deg,#667eea,#764ba2)}.topic-modal{width:100%;max-width:460px;background:#fffffffa;border-radius:16px;padding:2rem;box-shadow:0 20px 60px #00000040;text-align:center}.topic-modal-icon{font-size:2.5rem;margin-bottom:.75rem}.topic-modal h2{margin:0 0 .5rem;color:#333;font-size:1.5rem}.topic-modal p{margin:0 0 1.5rem;color:#666;line-height:1.5}.topic-modal form{display:flex;flex-direction:column;gap:1rem}.topic-modal input{width:100%;padding:.875rem 1rem;border:1px solid #d1d5db;border-radius:10px;font-size:1rem;box-sizing:border-box}.topic-modal input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea26}.topic-suggestions{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center}.topic-suggestion{padding:.5rem .875rem;border:1px solid #d1d5db;border-radius:999px;background:#fff;color:#555;font-size:.875rem;cursor:pointer;transition:all .2s}.topic-suggestion:hover{border-color:#667eea;color:#667eea}.topic-suggestion.selected{border-color:#667eea;background:#667eea1a;color:#667eea}.topic-modal-error{color:#dc2626;font-size:.9rem;text-align:left}.topic-modal button[type=submit]{padding:.875rem 1rem;border:none;border-radius:10px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:1rem;font-weight:600;cursor:pointer}.topic-modal button[type=submit]:disabled{opacity:.6;cursor:not-allowed}.topic-modal-wide{max-width:520px}.mode-options{display:flex;flex-direction:column;gap:.875rem;margin-bottom:1rem}.mode-option{display:flex;flex-direction:column;align-items:flex-start;gap:.35rem;width:100%;padding:1rem 1.125rem;border:2px solid #e5e7eb;border-radius:12px;background:#fff;cursor:pointer;text-align:left;transition:all .2s}.mode-option:hover{border-color:#667eea;background:#667eea0d;transform:translateY(-1px)}.mode-option-icon{font-size:1.5rem}.mode-option-title{font-size:1.05rem;font-weight:700;color:#333}.mode-option-desc{font-size:.875rem;color:#666;line-height:1.45}.topic-modal-back{padding:.625rem 1rem;border:none;border-radius:8px;background:transparent;color:#667eea;font-size:.9rem;font-weight:600;cursor:pointer}.topic-modal-back:hover{background:#667eea14}.app{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.app-header{text-align:center;padding:4rem 2rem 2rem;color:#fff}.app-header h1{font-size:3rem;margin-bottom:1rem;text-shadow:0 2px 4px rgba(0,0,0,.3)}.app-header p{font-size:1.2rem;opacity:.9;max-width:600px;margin:0 auto;line-height:1.6}.app-content{max-width:800px;margin:0 auto;padding:2rem}.demo-section{background:#fffffff2;border-radius:12px;padding:2rem;margin-bottom:2rem;box-shadow:0 8px 32px #0000001a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.demo-section h2{color:#333;margin-bottom:1rem;font-size:1.8rem}.demo-section ul{list-style:none;padding:0}.demo-section li{position:relative;padding:.5rem 0 .5rem 2rem}.demo-section li:before{content:"✓";color:#667eea;font-weight:700;position:absolute;left:0}.code-block{background:#f8f9fa;border:1px solid #e9ecef;border-radius:8px;padding:1.5rem;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:.9rem;color:#495057;overflow-x:auto;white-space:pre-wrap;line-height:1.5}@media(max-width:768px){.app-header{padding:2rem 1rem 1rem}.app-header h1{font-size:2rem}.app-content{padding:1rem}.demo-section{padding:1.5rem}}