:root{--bg-primary: #ffffff;--bg-secondary: #f7f7f8;--bg-tertiary: #ececf1;--text-primary: #2d2d30;--text-secondary: #6e6e80;--text-muted: #8e8ea0;--border: #e5e5e5;--border-focus: #10a37f;--accent: #10a37f;--accent-hover: #0d8a6b;--shadow: rgba(0, 0, 0, .1);--shadow-hover: rgba(0, 0, 0, .15)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0;padding:0}body{background:var(--bg-primary);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;font-size:16px;line-height:1.5}.chat-container{display:flex;flex-direction:column;height:100vh;max-width:768px;margin:0 auto;background:var(--bg-primary)}.chat-header{background:var(--bg-primary);border-bottom:1px solid var(--border);padding:16px 24px;position:sticky;top:0;z-index:10}.header-content{display:flex;justify-content:space-between;align-items:center;max-width:100%}.chat-header h1{margin:0;font-size:20px;font-weight:600;color:var(--text-primary)}.header-controls{display:flex;gap:12px;align-items:center}.role-select,.community-select{background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;padding:8px 12px;font-size:14px;color:var(--text-primary);outline:none;transition:border-color .2s ease}.role-select:focus,.community-select:focus{border-color:var(--border-focus)}.role-select{min-width:120px}.community-select{min-width:200px}.community-select:disabled{opacity:.6;cursor:not-allowed}.new-conversation-button{background:var(--accent);border:1px solid var(--accent);border-radius:8px;padding:8px 12px;font-size:14px;color:#fff;cursor:pointer;transition:all .2s ease;white-space:nowrap}.new-conversation-button:hover{background:var(--accent-hover);border-color:var(--accent-hover);transform:translateY(-1px);box-shadow:0 2px 8px var(--shadow)}.new-conversation-button:active{transform:translateY(0)}.clear-conversation-button{background:#e74c3c;border:1px solid #e74c3c;border-radius:8px;padding:8px 12px;font-size:14px;color:#fff;cursor:pointer;transition:all .2s ease;white-space:nowrap}.clear-conversation-button:hover{background:#c0392b;border-color:#c0392b;transform:translateY(-1px);box-shadow:0 2px 8px #e74c3c4d}.clear-conversation-button:active{transform:translateY(0)}.chat-area{flex:1;overflow-y:auto;display:flex;flex-direction:column;min-height:0;padding:0;scrollbar-width:none;-ms-overflow-style:none}.chat-area::-webkit-scrollbar{display:none}.welcome-message{text-align:center;max-width:600px;margin:24px auto 0;padding:24px}.welcome-message h2{font-size:32px;font-weight:600;color:var(--text-primary);margin:0 0 16px}.welcome-message p{font-size:18px;color:var(--text-secondary);margin:0}.message{margin:12px 0;max-width:100%;padding:0 24px}.message-content{background:var(--bg-secondary);border-radius:12px;padding:16px 20px;white-space:pre-wrap;word-wrap:break-word;line-height:1.6;color:var(--text-primary);border:1px solid var(--border)}.ai-message .message-content{background:var(--bg-secondary);color:var(--text-primary);margin-right:auto;max-width:80%}.user-message .message-content{background:var(--accent);color:#fff;margin-left:auto;max-width:80%}.sources{margin-top:12px;padding-top:12px;border-top:1px solid var(--border);font-size:14px;color:var(--text-secondary)}.sources strong{color:var(--text-primary)}.sources-list{margin-top:12px;padding-top:12px;border-top:1px solid var(--border);font-size:14px;line-height:1.4}.sources-title{font-weight:600;color:var(--text-primary);margin-bottom:8px;display:block}.sources-items{display:flex;flex-direction:column;gap:8px}.sources-items-inline{display:inline;line-height:1.6}.source-item{display:flex;flex-direction:column;gap:4px;padding:8px 12px;background:var(--bg-tertiary);border-radius:8px;border:1px solid var(--border);transition:all .2s ease}.source-item:hover{background:var(--bg-secondary);border-color:var(--accent);transform:translateY(-1px);box-shadow:0 2px 8px var(--shadow)}.source-link{color:var(--accent);text-decoration:none;font-weight:500;transition:all .2s ease;cursor:pointer;display:inline-flex;align-items:center;gap:6px;padding:4px 0}.source-link:hover{color:var(--accent-hover);text-decoration:underline;text-decoration-color:var(--accent-hover);text-decoration-thickness:2px}.source-link:active{transform:translateY(0)}.source-link-disabled{color:var(--text-muted);text-decoration:line-through;cursor:not-allowed;opacity:.7;display:inline-flex;align-items:center;gap:6px;padding:4px 0}.source-link-inline{color:var(--accent);text-decoration:underline;text-decoration-color:var(--accent);transition:all .2s ease;cursor:pointer;display:inline}.source-link-inline:hover{color:var(--accent-hover);text-decoration-color:var(--accent-hover);text-decoration-thickness:2px}.source-link-disabled-inline{color:var(--text-muted);text-decoration:line-through;cursor:not-allowed;opacity:.7;display:inline}.source-text{color:var(--text-secondary);font-size:13px;line-height:1.4;font-style:italic;margin-top:2px}.source-pages{color:var(--text-muted);font-size:12px;font-weight:500;margin-top:2px}.sources-links{color:var(--text-secondary)}.sources-link{color:var(--accent);text-decoration:underline;text-decoration-color:var(--accent);transition:all .2s ease;cursor:pointer;display:inline-block;margin-right:4px}.sources-link:hover{color:var(--accent-hover);text-decoration-color:var(--accent-hover);text-decoration-thickness:2px;transform:translateY(-1px)}.sources-link:active{transform:translateY(0)}.sources-link-disabled{color:var(--text-muted);text-decoration:line-through;cursor:not-allowed;opacity:.7}.sources-separator{color:var(--text-muted)}.typing-indicator{display:flex;gap:4px;align-items:center;padding:8px 0}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--text-muted);animation:typing 1.4s infinite ease-in-out}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{transform:translateY(0);opacity:.5}30%{transform:translateY(-10px);opacity:1}}.input-area{background:var(--bg-primary);border-top:1px solid var(--border);padding:16px 24px 24px;position:sticky;bottom:0}.input-container{max-width:100%;margin:0 auto}.input-wrapper{display:flex;align-items:flex-end;background:var(--bg-secondary);border:1px solid var(--border);border-radius:24px;padding:8px 12px;transition:border-color .2s ease,box-shadow .2s ease}.input-wrapper:focus-within{border-color:var(--border-focus);box-shadow:0 0 0 3px #10a37f1a}.message-input{flex:1;background:transparent;border:none;outline:none;resize:none;font-size:16px;line-height:1.5;color:var(--text-primary);padding:8px 12px;min-height:24px;max-height:120px;font-family:inherit}.message-input::placeholder{color:var(--text-muted)}.send-button{background:var(--accent);border:none;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:#fff;transition:background-color .2s ease,transform .1s ease;margin-left:8px;flex-shrink:0}.send-button:hover:not(:disabled){background:var(--accent-hover);transform:scale(1.05)}.send-button:disabled{background:var(--text-muted);cursor:not-allowed;transform:none}.send-button svg{width:16px;height:16px}@media (max-width: 768px){.chat-container{max-width:100%}.chat-header{padding:12px 16px}.header-content{flex-direction:column;gap:12px;align-items:stretch}.header-controls{justify-content:center}.chat-area{padding:16px}.welcome-message h2{font-size:24px}.welcome-message p{font-size:16px}.input-area{padding:12px 16px 16px}}@media (max-width: 480px){.header-controls{flex-direction:column;gap:8px}.role-select,.community-select,.new-conversation-button,.clear-conversation-button{width:100%}}