.file-upload-container{display:flex;align-items:flex-end;gap:8px}.file-input-hidden{display:none}.file-upload-button{display:flex;align-items:center;justify-content:center;width:40px;height:40px;padding:8px;background:var(--bg-secondary, #f5f5f5);border:1px solid var(--border-color, #ddd);border-radius:8px;cursor:pointer;color:var(--text-secondary, #666);transition:all .2s ease}.file-upload-button:hover:not(:disabled){background:var(--bg-hover, #e8e8e8);color:var(--text-primary, #333);border-color:var(--border-hover, #bbb)}.file-upload-button:disabled{opacity:.5;cursor:not-allowed}.file-upload-button svg{width:20px;height:20px}.file-preview-list{display:flex;flex-wrap:wrap;gap:8px;max-width:100%;overflow-x:auto;padding:4px 0}.file-preview-item{display:flex;align-items:center;gap:6px;padding:6px 10px;background:var(--bg-secondary, #f5f5f5);border:1px solid var(--border-color, #ddd);border-radius:8px;font-size:12px;max-width:200px;transition:all .2s ease}.file-preview-item.pending{border-color:var(--border-color, #ddd)}.file-preview-item.uploading{border-color:var(--color-info, #3b82f6);background:var(--bg-info-light, #eff6ff)}.file-preview-item.uploaded{border-color:var(--color-success, #10b981);background:var(--bg-success-light, #ecfdf5)}.file-preview-item.error{border-color:var(--color-error, #ef4444);background:var(--bg-error-light, #fef2f2)}.file-icon{font-size:16px;flex-shrink:0}.file-info{display:flex;flex-direction:column;gap:2px;overflow:hidden;min-width:0}.file-name{font-weight:500;color:var(--text-primary, #333);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-size{color:var(--text-secondary, #666);font-size:10px}.file-status{font-size:14px;flex-shrink:0}.file-status.uploading{animation:pulse 1s infinite}.file-remove-button{display:flex;align-items:center;justify-content:center;width:20px;height:20px;padding:0;background:transparent;border:none;border-radius:50%;cursor:pointer;color:var(--text-secondary, #666);font-size:16px;font-weight:700;line-height:1;transition:all .2s ease;flex-shrink:0}.file-remove-button:hover:not(:disabled){background:var(--bg-error-light, #fef2f2);color:var(--color-error, #ef4444)}.file-remove-button:disabled{opacity:.5;cursor:not-allowed}@media (prefers-color-scheme: dark){.file-upload-button{background:var(--bg-secondary-dark, #2d2d2d);border-color:var(--border-color-dark, #444);color:var(--text-secondary-dark, #aaa)}.file-upload-button:hover:not(:disabled){background:var(--bg-hover-dark, #3d3d3d);color:var(--text-primary-dark, #fff);border-color:var(--border-hover-dark, #555)}.file-preview-item{background:var(--bg-secondary-dark, #2d2d2d);border-color:var(--border-color-dark, #444)}.file-preview-item.uploading{background:var(--bg-info-dark, #1e3a5f);border-color:var(--color-info, #3b82f6)}.file-preview-item.uploaded{background:var(--bg-success-dark, #064e3b);border-color:var(--color-success, #10b981)}.file-preview-item.error{background:var(--bg-error-dark, #7f1d1d);border-color:var(--color-error, #ef4444)}.file-name{color:var(--text-primary-dark, #fff)}.file-size,.file-remove-button{color:var(--text-secondary-dark, #aaa)}.file-remove-button:hover:not(:disabled){background:var(--bg-error-dark, #7f1d1d);color:var(--color-error, #ef4444)}}@media (max-width: 768px){.file-preview-list{max-width:calc(100vw - 120px)}.file-preview-item{max-width:150px}}.chat-container{display:flex;flex-direction:column;height:100%;background:var(--color-bg-light);transition:background-color var(--transition-base)}.chat-messages{flex:1;overflow-y:auto;padding:var(--spacing-xl);display:flex;flex-direction:column;gap:var(--spacing-lg)}.chat-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;padding:var(--spacing-2xl)}.empty-icon{font-size:64px;margin-bottom:var(--spacing-lg);opacity:.6}.empty-title{font-size:24px;font-weight:700;color:var(--color-text);margin-bottom:var(--spacing-sm)}.empty-description{font-size:16px;color:var(--color-text-muted);margin:0}.message-wrapper{display:flex;gap:var(--spacing-md);align-items:flex-start;animation:fadeInUp .3s ease-out}.message-wrapper.message-user{flex-direction:row-reverse}.message-avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0;background:var(--color-surface);border:1px solid var(--color-border)}.message-wrapper.message-user .message-avatar{background:#9b99fe;border-color:#9b99fe}.message-content{flex:1;max-width:70%;min-width:0}.message-bubble{padding:12px 16px;border-radius:var(--radius-lg);line-height:1.6;word-wrap:break-word;overflow-wrap:anywhere;white-space:pre-wrap}.message-wrapper.message-user .message-bubble{background:#9b99fe;color:#0a0a0a;border-bottom-right-radius:4px}.message-wrapper.message-assistant .message-bubble{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border);border-bottom-left-radius:4px}[data-theme=dark] .message-wrapper.message-assistant .message-bubble{background:#ffffff0d;border-color:#ffffff1a}.message-heading{font-weight:700;margin-bottom:8px}.message-heading-1{font-size:20px;color:#9b99fe}.message-heading-2{font-size:18px;color:#2bc8b7}.message-heading-3{font-size:16px;color:#764ba2}.message-list{margin:8px 0;padding-left:20px}.message-list li{margin-bottom:4px;line-height:1.6}.message-paragraph{margin-bottom:8px}.message-paragraph:last-child{margin-bottom:0}.message-link{color:#9b99fe;text-decoration:underline;transition:color var(--transition-fast)}.message-link:hover{color:#7d7bfe}.underline{text-decoration:underline}.message-typing{padding:16px 20px}.typing-indicator{display:flex;gap:4px;align-items:center}.typing-indicator span{width:8px;height:8px;border-radius:50%;background:var(--color-text-muted);animation:typing 1.4s 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:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.chat-error{padding:12px 16px;background:#dc35451a;border-top:1px solid rgba(220,53,69,.2);color:#dc3545;display:flex;align-items:center;gap:8px;font-size:14px}[data-theme=dark] .chat-error{background:#dc354533;border-top-color:#dc35454d}.error-icon{font-size:18px}.chat-input-container{padding:var(--spacing-md);border-top:1px solid var(--color-border);background:var(--color-surface)}.chat-input-wrapper{display:flex;align-items:flex-end;gap:var(--spacing-sm);padding:12px;background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-xl);transition:all var(--transition-fast)}.chat-input-wrapper:focus-within{border-color:#9b99fe;box-shadow:0 0 0 3px #9b99fe1a}.chat-input{flex:1;border:none;outline:none;background:transparent;color:var(--color-text);font-size:14px;font-family:inherit;resize:none;max-height:200px;line-height:1.5;padding:0}.chat-input::placeholder{color:var(--color-text-light)}.chat-send-button{padding:8px;background:#9b99fe;color:#0a0a0a;border:none;border-radius:var(--radius-md);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);flex-shrink:0;width:36px;height:36px}.chat-send-button:hover:not(:disabled){background:#7d7bfe;transform:scale(1.05)}.chat-send-button:disabled{opacity:.5;cursor:not-allowed;transform:none}.chat-footer{margin-top:8px;padding:0 4px;display:flex;justify-content:space-between;align-items:center}.chat-shortcut{font-size:12px;color:var(--color-text-muted)}.chat-file-count{font-size:12px;color:#9b99fe;font-weight:500}.message-files{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}.message-file-tag{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;background:#9b99fe26;border:1px solid rgba(155,153,254,.3);border-radius:var(--radius-md);font-size:12px;color:#9b99fe}.message-wrapper.message-user .message-file-tag{background:#fff3;border-color:#ffffff4d;color:#0a0a0a}[data-theme=dark] .message-file-tag{background:#9b99fe33;border-color:#9b99fe66}.send-spinner{width:16px;height:16px;border:2px solid rgba(10,10,10,.3);border-top-color:#0a0a0a;border-radius:50%;animation:spin .8s linear infinite}.chat-messages::-webkit-scrollbar{width:8px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}.chat-messages::-webkit-scrollbar-thumb:hover{background:var(--color-text-muted)}@media (max-width: 1024px){.message-content{max-width:75%}}@media (max-width: 768px){.chat-messages{padding:var(--spacing-md);gap:var(--spacing-md)}.message-content{max-width:85%}.message-avatar{width:28px;height:28px;font-size:16px}.message-bubble{padding:10px 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.error-icon{font-size:3rem;margin-bottom:1rem}.chatkit-error h2{font-size:1.5rem;margin-bottom:.5rem;color:var(--color-text, #333)}.chatkit-error p{font-size:1rem;color:var(--color-text-secondary, #666);max-width:500px}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;padding:20px;animation:fadeIn .3s ease-out}.modal-container{position:relative;background:var(--color-surface, white);border:1px solid var(--color-border, rgba(0, 0, 0, .1));border-radius:16px;box-shadow:0 20px 60px #0000004d;max-width:440px;width:100%;max-height:90vh;overflow-y:auto;overflow-x:hidden;animation:slideUp .4s cubic-bezier(.16,1,.3,1)}.modal-enter{animation:slideUp .4s cubic-bezier(.16,1,.3,1)}.modal-close{position:absolute;top:16px;right:16px;width:36px;height:36px;border:none;background:#0000000d;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#666;transition:all .2s ease;z-index:10}.modal-close:hover{background:#0000001a;color:#333;transform:rotate(90deg)}.modal-close svg{width:18px;height:18px}.modal-content{padding:40px 40px 32px}@media (max-width: 768px){.modal-container{max-width:100%;border-radius:16px 16px 0 0;margin-top:auto}.modal-content{padding:32px 24px}}.confirm-modal-container{max-width:420px;padding:0}.confirm-modal-content{padding:32px}.confirm-modal-title{font-size:20px;font-weight:700;color:var(--color-text);margin:0 0 12px;line-height:1.4}.confirm-modal-message{font-size:15px;color:var(--color-text-muted);margin:0 0 24px;line-height:1.6}.confirm-modal-actions{display:flex;gap:12px;justify-content:flex-end;flex-direction:row-reverse}.confirm-modal-btn{padding:10px 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.confirm-modal-btn-cancel{background:var(--color-bg-light);color:var(--color-text);border-color:var(--color-border)}[data-theme=dark] .confirm-modal-btn-cancel:hover{background:var(--color-surface)}@media (max-width: 768px){.confirm-modal-content{padding:24px}.confirm-modal-title{font-size:18px}.confirm-modal-message{font-size:14px}.confirm-modal-actions{flex-direction:column}.confirm-modal-btn{width:100%}}.settings-container{max-width:1200px;margin:0 auto;padding:var(--spacing-xl) var(--spacing-md);width:100%;box-sizing:border-box;padding-bottom:var(--spacing-3xl)}.btn-back{padding:8px 12px;background:transparent;border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);font-size:18px;cursor:pointer;transition:all 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var(--spacing-sm)}.settings-header{margin-bottom:var(--spacing-lg)}.settings-title{font-size:24px}.settings-subtitle{font-size:14px}.settings-card{padding:var(--spacing-md)}.card-title{font-size:18px}.card-description,.form-label{font-size:13px}.form-select,.form-input{padding:10px 12px;font-size:16px}.btn{padding:10px 20px;font-size:14px}.key-icon{width:40px;height:40px;font-size:24px}.key-provider{font-size:14px}.key-date{font-size:11px}.empty-icon{font-size:48px}.empty-text{font-size:16px}.empty-subtext{font-size:13px}.btn-back{width:32px;height:32px;font-size:16px}}.support-modal-container{max-width:560px}.support-modal-title{font-size:28px;font-weight:700;margin:0 0 8px;color:var(--color-text, #1a1a1a)}.support-modal-subtitle{font-size:15px;color:var(--color-text-secondary, #666);margin:0 0 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#fcc;border-radius:8px;color:#c33;font-size:14px;line-height:1.5}.support-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:8px}.btn{padding:12px 24px;font-size:15px;font-weight:600;border:none;border-radius:8px;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;gap:8px;justify-content:center}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--color-primary, #2563eb);color:#fff}.btn-primary:hover:not(:disabled){background:var(--color-primary-hover, #1d4ed8);transform:translateY(-1px);box-shadow:0 4px 12px #2563eb4d}.btn-secondary{background:var(--color-surface-secondary, #f5f5f5);color:var(--color-text, #1a1a1a)}.btn-secondary:hover:not(:disabled){background:var(--color-surface-hover, #e5e5e5)}.spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.support-success{text-align:center;padding:20px 0}.support-success-icon{width:64px;height:64px;margin:0 auto 20px;background:linear-gradient(135deg,#10b981,#059669);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:32px;color:#fff;animation:successPop .5s cubic-bezier(.16,1,.3,1)}@keyframes successPop{0%{transform:scale(0);opacity:0}50%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}.support-success-title{font-size:24px;font-weight:700;margin:0 0 12px;color:var(--color-text, #1a1a1a)}.support-success-message{font-size:15px;color:var(--color-text-secondary, #666);margin:0 0 16px;line-height:1.5}.support-success-id{font-size:13px;color:var(--color-text-secondary, #666);margin:0;padding:12px 16px;background:var(--color-surface-secondary, #f5f5f5);border-radius:8px;display:inline-block}.support-success-id strong{color:var(--color-text, #1a1a1a);font-family:Courier New,monospace}[data-theme=dark] .support-modal-title,[data-theme=dark] .form-label,[data-theme=dark] 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#1a1a1a)}.project-modal-subtitle{font-size:14px;color:var(--color-text-secondary, #666);margin:0 0 8px;line-height:1.4}.project-form{display:flex;flex-direction:column;gap:12px}.project-form .form-group{display:flex;flex-direction:column;gap:4px}.project-form .form-label{font-size:14px;font-weight:600;color:var(--color-text, #1a1a1a)}.project-form .form-input,.project-form .form-textarea{width:100%;padding:10px 14px;font-size:15px;border:1px solid var(--color-border, #ddd);border-radius:8px;background:var(--color-input-bg, white);color:var(--color-text, #1a1a1a);transition:all .2s ease;font-family:inherit}.project-form .form-input:focus,.project-form .form-textarea:focus{outline:none;border-color:var(--color-primary, #2563eb);box-shadow:0 0 0 3px #2563eb1a}.project-form .form-input:disabled,.project-form .form-textarea:disabled{opacity:.6;cursor:not-allowed}.project-form .form-textarea{resize:vertical;min-height:60px;line-height:1.5}.project-form 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solid var(--color-border);border-radius:18px;box-shadow:0 24px 48px #0f172a40;padding:16px;display:flex;flex-direction:column;gap:16px;z-index:30;animation:fadeInUp .2s ease-out}[data-theme=dark] .settings-menu-popover{background:#111111f5;border-color:#ffffff14;box-shadow:0 24px 48px #0009}.settings-menu-header{display:flex;flex-direction:column;gap:6px}.settings-menu-email{font-size:14px;font-weight:600;color:var(--color-text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.settings-menu-plan{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--color-text-muted);padding:4px 10px;border-radius:999px;background:var(--color-bg-light);border:1px solid var(--color-border);width:fit-content}.settings-menu-plan-status{font-size:11px;text-transform:uppercase;letter-spacing:.4px;color:inherit;opacity:.75}[data-theme=dark] 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