.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary: #0f0f0f;--bg-secondary: #1a1a1a;--bg-tertiary: #252525;--text-primary: #e8e8e8;--text-secondary: #999;--accent: #6c63ff;--accent-hover: #5a52e0;--bubble-user: #6c63ff;--bubble-assistant: #2a2a2a;--danger: #e74c3c;--border: #333;--radius: 12px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}#root{height:100%}.app-container{height:100%;max-width:480px;margin:0 auto}.setup-page{display:flex;align-items:center;justify-content:center;min-height:100%;padding:20px;padding-top:calc(20px + var(--safe-top))}.setup-card{background:var(--bg-secondary);border-radius:var(--radius);padding:32px 24px;width:100%;text-align:center}.setup-card h1{font-size:24px;margin-bottom:8px}.setup-card p{color:var(--text-secondary);margin-bottom:24px;font-size:14px}.setup-card input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;background:var(--bg-tertiary);color:var(--text-primary);font-size:16px;margin-bottom:8px}.setup-card .error{color:var(--danger);font-size:13px;margin-bottom:8px}.setup-card button{width:100%;padding:12px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:16px;font-weight:600;cursor:pointer;margin-top:8px}.setup-card button:hover{background:var(--accent-hover)}.thread-list-page{padding:16px;padding-top:calc(16px + var(--safe-top));padding-bottom:calc(16px + var(--safe-bottom))}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.page-header h1{font-size:22px}.header-actions{display:flex;gap:8px}.btn-icon{width:40px;height:40px;border:none;border-radius:50%;background:var(--accent);color:#fff;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center}.btn-icon:hover{background:var(--accent-hover)}.btn-icon.btn-subtle{background:transparent}.empty-state{text-align:center;padding:60px 20px;color:var(--text-secondary)}.empty-state button{margin-top:16px;padding:10px 20px;border:none;border-radius:8px;background:var(--accent);color:#fff;font-size:15px;cursor:pointer}.thread-list{list-style:none;display:flex;flex-direction:column;gap:8px}.thread-item{display:flex;align-items:center;background:var(--bg-secondary);border-radius:var(--radius);overflow:hidden}.thread-link{flex:1;display:flex;align-items:center;gap:12px;padding:14px 16px;text-decoration:none;color:inherit}.thread-emoji{font-size:28px}.thread-info{display:flex;flex-direction:column;gap:2px}.thread-name{font-weight:600;font-size:15px}.thread-date{font-size:12px;color:var(--text-secondary)}.btn-delete{padding:14px 16px;border:none;background:transparent;font-size:16px;cursor:pointer;opacity:.4}.btn-delete:hover{opacity:1}.new-thread-overlay{position:fixed;inset:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:100;padding:20px}.new-thread-form{background:var(--bg-secondary);border-radius:var(--radius);padding:24px;width:100%;max-width:360px}.new-thread-form h2{font-size:18px;margin-bottom:16px}.emoji-picker{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}.emoji-btn{width:40px;height:40px;border:2px solid var(--border);border-radius:8px;background:transparent;font-size:20px;cursor:pointer}.emoji-btn.selected{border-color:var(--accent);background:#6c63ff26}.new-thread-form input{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;background:var(--bg-tertiary);color:var(--text-primary);font-size:16px;margin-bottom:16px}.form-actions{display:flex;gap:8px}.form-actions button{flex:1;padding:10px;border:none;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer}.form-actions button[type=submit]{background:var(--accent);color:#fff}.form-actions button[type=submit]:disabled{opacity:.4;cursor:not-allowed}.btn-secondary{background:var(--bg-tertiary)!important;color:var(--text-secondary)!important}.chat-page{display:flex;flex-direction:column;height:100%}.chat-header{display:flex;align-items:center;gap:12px;padding:12px 16px;padding-top:calc(12px + var(--safe-top));background:var(--bg-secondary);border-bottom:1px solid var(--border);flex-shrink:0}.back-btn{font-size:20px;text-decoration:none;color:var(--text-primary);padding:4px 8px}.chat-title{flex:1;font-weight:600;font-size:16px;background:none;border:none;color:inherit;text-align:left;padding:0;cursor:pointer}.edit-hint{font-size:12px;opacity:.3;margin-left:4px}.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:8px}.chat-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:12px;color:var(--text-secondary)}.chat-loading a{color:var(--accent)}.message-bubble{max-width:85%;padding:10px 14px;border-radius:16px;font-size:15px;line-height:1.5;word-break:break-word;white-space:pre-wrap}.message-bubble.user{align-self:flex-end;background:var(--bubble-user);color:#fff;border-bottom-right-radius:4px}.message-bubble.assistant{align-self:flex-start;background:var(--bubble-assistant);border-bottom-left-radius:4px}.message-sender{display:block;font-size:12px;font-weight:600;color:var(--accent);margin-bottom:4px}.message-time{display:block;font-size:11px;color:#fff6;margin-top:4px;text-align:right}.message-bubble.assistant .message-time{color:var(--text-secondary)}.typing-indicator{display:flex;gap:4px;padding:4px 0}.typing-indicator span{width:8px;height:8px;background:var(--text-secondary);border-radius:50%;animation:typing 1.2s infinite}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes typing{0%,60%,to{opacity:.3;transform:scale(.8)}30%{opacity:1;transform:scale(1)}}.chat-error{text-align:center;color:var(--danger);font-size:13px;padding:8px}.chat-input-area{display:flex;gap:8px;padding:12px 16px;padding-bottom:calc(12px + var(--safe-bottom));background:var(--bg-secondary);border-top:1px solid var(--border);flex-shrink:0}.chat-input-area textarea{flex:1;padding:10px 14px;border:1px solid var(--border);border-radius:20px;background:var(--bg-tertiary);color:var(--text-primary);font-size:15px;font-family:inherit;resize:none;max-height:120px}.chat-input-area textarea:focus{outline:none;border-color:var(--accent)}.send-btn{width:44px;height:44px;border:none;border-radius:50%;background:var(--accent);color:#fff;font-size:16px;cursor:pointer;flex-shrink:0}.send-btn:disabled{opacity:.4;cursor:not-allowed}.send-btn:hover:not(:disabled){background:var(--accent-hover)}