: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 -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.login-card{background:#fff;border-radius:16px;padding:40px;max-width:480px;width:100%;box-shadow:0 20px 60px #0000004d}.login-card h1{margin:0 0 10px;color:#333;font-size:32px;text-align:center}.login-subtitle{color:#666;text-align:center;margin:0 0 30px;font-size:16px}.error-message{background-color:#fee;color:#c33;padding:12px 16px;border-radius:8px;margin-bottom:20px;border-left:4px solid #c33}.wallet-buttons{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}.wallet-button{padding:16px 24px;font-size:16px;font-weight:600;border:none;border-radius:12px;cursor:pointer;transition:all .3s ease;color:#fff}.wallet-button:disabled{opacity:.6;cursor:not-allowed}.wallet-button.ethereum{background:linear-gradient(135deg,#627eea,#5568d3)}.wallet-button.ethereum:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 16px #627eea66}.wallet-button.solana{background:linear-gradient(135deg,#9945ff,#14f195)}.wallet-button.solana:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 16px #9945ff66}.login-footer{color:#999;font-size:13px;text-align:center;margin:0;line-height:1.5}.wallet-selector{margin-bottom:24px}.wallet-selector h3{color:#333;font-size:20px;margin:0 0 20px;text-align:center}.wallet-options{display:flex;flex-direction:column;gap:12px;margin-bottom:16px}.wallet-option-button{display:flex;align-items:center;gap:12px;padding:16px 20px;font-size:16px;font-weight:600;border:2px solid #e0e0e0;border-radius:12px;background:#fff;cursor:pointer;transition:all .2s ease;color:#333}.wallet-option-button:hover:not(:disabled){border-color:#9945ff;background:#f9f5ff;transform:translateY(-2px);box-shadow:0 4px 12px #9945ff33}.wallet-option-button:disabled{opacity:.6;cursor:not-allowed}.wallet-icon{font-size:24px}.wallet-name{flex:1;text-align:left}.cancel-button{width:100%;padding:12px;font-size:14px;font-weight:600;border:2px solid #ddd;border-radius:8px;background:#fff;color:#666;cursor:pointer;transition:all .2s ease}.cancel-button:hover{border-color:#999;color:#333}.chat-container{height:100vh;display:flex;flex-direction:column;background:#f5f5f5}.chat-header{background:#fff;padding:16px 24px;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 8px #0000001a}.header-left h2{margin:0 0 4px;color:#333;font-size:24px}.wallet-info{margin:0;color:#666;font-size:14px;font-family:monospace}.header-right{display:flex;gap:12px;align-items:center}.profile-link{color:#667eea;text-decoration:none;font-weight:600;padding:8px 16px;border-radius:8px;transition:background .3s}.profile-link:hover{background:#f0f0f0}.logout-button{padding:8px 20px;background:#e74c3c;color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:600;transition:background .3s}.logout-button:hover{background:#c0392b}.chat-content{flex:1;display:flex;gap:0;overflow:hidden}.conversations-sidebar{width:320px;background:#fff;border-right:1px solid #e0e0e0;display:flex;flex-direction:column;overflow:hidden}.sidebar-header{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:1px solid #e0e0e0}.sidebar-title{margin:0;font-size:18px;font-weight:600;color:#333}.new-contact-button{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;font-size:28px;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .3s;line-height:1}.new-contact-button:hover{transform:scale(1.1);box-shadow:0 4px 12px #667eea66}.conversations-list{flex:1;overflow-y:auto;background:#fafafa}.conversation-item{padding:14px 20px;cursor:pointer;border-bottom:1px solid #e8e8e8;background:#fff;transition:all .2s}.conversation-item:hover{background:#f8f8f8}.conversation-item.active{background:linear-gradient(90deg,#667eea1a,#764ba21a);border-left:3px solid #667eea}.conversation-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.partner-address{font-family:monospace;font-size:14px;font-weight:600;color:#333}.timestamp{font-size:11px;color:#999}.conversation-preview{display:flex;justify-content:space-between;align-items:center;gap:8px}.last-message{flex:1;font-size:13px;color:#666;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.unread-badge{background:#e74c3c;color:#fff;font-size:11px;font-weight:600;padding:2px 8px;border-radius:10px;min-width:20px;text-align:center}.no-conversations{padding:40px 20px;text-align:center;color:#999}.no-conversations p{margin:8px 0}.no-conversations .hint{font-size:13px;color:#bbb}.load-more-trigger{padding:12px;text-align:center}.loading-more{font-size:13px;color:#999}.chat-area{flex:1;display:flex;flex-direction:column;background:#f5f5f5}.chat-area-header{background:#fff;padding:16px 24px;border-bottom:1px solid #e0e0e0}.partner-info{display:flex;align-items:center;gap:12px}.chat-area-header h3{margin:0;font-size:18px;font-weight:600;color:#333;font-family:monospace}.partner-actions{display:flex;align-items:center;gap:8px}.blockchain-badge{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-size:11px;font-weight:700;padding:4px 8px;border-radius:4px;letter-spacing:.5px}.copy-btn{background:#f0f0f0;border:none;border-radius:6px;padding:6px 8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;color:#666}.copy-btn:hover{background:#667eea;color:#fff}.explorer-link{display:flex;align-items:center;justify-content:center;padding:6px 8px;border-radius:6px;transition:all .2s;background:#f0f0f0}.explorer-link:hover{background:#e0e0e0;transform:translateY(-1px)}.explorer-icon{width:20px;height:20px;display:block}.no-selection{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;color:#999;padding:40px}.no-selection p{margin:8px 0;font-size:16px}.no-selection .hint{font-size:13px;color:#bbb}.messages-container{flex:1;background:#fff;padding:24px;overflow-y:auto;display:flex;flex-direction:column;position:relative}.load-older-button{padding:8px 16px;background:#667eea;color:#fff;border:none;border-radius:8px;cursor:pointer;font-weight:500;font-size:13px;margin-bottom:16px;align-self:center;transition:all .3s}.load-older-button:hover:not(:disabled){background:#5568d3;box-shadow:0 2px 8px #667eea4d}.load-older-button:disabled{opacity:.5;cursor:not-allowed}.loading,.no-messages{text-align:center;color:#999;padding:40px 20px}.messages-list{display:flex;flex-direction:column;gap:16px;flex:1}.message{max-width:70%;padding:12px 16px;border-radius:12px;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message.sent{align-self:flex-end;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-bottom-right-radius:4px}.message.received{align-self:flex-start;background:#f0f0f0;color:#333;border-bottom-left-radius:4px}.message-content{margin-bottom:8px;word-wrap:break-word;line-height:1.4}.message-meta{display:flex;justify-content:space-between;gap:12px;font-size:11px;opacity:.7}.message.sent .message-meta{color:#fff}.message.received .message-meta{color:#666}.message-sender{font-family:monospace}.message-timestamp{cursor:help}.message-input-form{display:flex;gap:12px;padding:16px 24px;background:#fff;border-top:1px solid #e0e0e0}.message-input{flex:1;padding:14px 18px;border:2px solid #ddd;border-radius:12px;font-size:15px;transition:border-color .3s}.message-input:focus{outline:none;border-color:#667eea}.message-input:disabled{background:#f5f5f5;cursor:not-allowed}.send-button{padding:14px 32px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:12px;font-weight:600;cursor:pointer;transition:all .3s}.send-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.send-button:disabled{opacity:.5;cursor:not-allowed;transform:none}.modal-overlay{position:fixed;inset:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.modal-content{background:#fff;border-radius:16px;padding:24px;max-width:500px;width:90%;box-shadow:0 20px 60px #0000004d;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.modal-header h3{margin:0;font-size:22px;color:#333}.modal-close{background:none;border:none;font-size:32px;color:#999;cursor:pointer;padding:0;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:4px;transition:all .2s}.modal-close:hover{background:#f0f0f0;color:#333}.modal-suggestion{background:linear-gradient(135deg,#667eea0d,#764ba20d);border:1px solid rgba(102,126,234,.2);border-radius:8px;padding:12px 16px;margin-bottom:20px}.modal-suggestion p{margin:0 0 8px;font-size:14px;color:#333}.suggestion-addresses{display:flex;flex-direction:column;gap:8px}.suggestion-item{display:flex;align-items:center;gap:8px}.chain-label{font-weight:600;font-size:12px;color:#667eea;min-width:35px}.address-suggestion{flex:1;background:#fff;border:1px solid #ddd;border-radius:6px;padding:6px 10px;font-family:monospace;font-size:12px;color:#666;cursor:pointer;text-align:left;transition:all .2s;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.address-suggestion:hover{background:#667eea;color:#fff;border-color:#667eea;transform:translate(2px)}.new-contact-form{display:flex;flex-direction:column;gap:16px}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-weight:600;color:#333;font-size:14px}.modal-input,.modal-textarea{padding:12px 16px;border:2px solid #ddd;border-radius:8px;font-size:14px;font-family:inherit;transition:border-color .3s}.modal-input{font-family:monospace}.modal-textarea{resize:vertical;min-height:100px}.modal-input:focus,.modal-textarea:focus{outline:none;border-color:#667eea}.modal-input:disabled,.modal-textarea:disabled{background:#f5f5f5;cursor:not-allowed}.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:8px}.cancel-btn,.send-btn{padding:10px 24px;border-radius:8px;font-weight:600;cursor:pointer;transition:all .3s;border:none;font-size:14px}.cancel-btn{background:#f0f0f0;color:#666}.cancel-btn:hover:not(:disabled){background:#e0e0e0}.send-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.send-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.cancel-btn:disabled,.send-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.profile-container{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:40px 20px}.profile-card{background:#fff;border-radius:16px;padding:40px;max-width:600px;margin:0 auto;box-shadow:0 20px 60px #0000004d}.profile-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:32px;padding-bottom:16px;border-bottom:2px solid #f0f0f0}.profile-header h1{margin:0;color:#333;font-size:28px}.back-link{color:#667eea;text-decoration:none;font-weight:600;transition:color .3s}.back-link:hover{color:#764ba2}.profile-info{margin-bottom:32px}.info-item{margin-bottom:20px}.info-item label{display:block;color:#666;font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px}.wallet-display,.blockchain-display{background:#f5f5f5;padding:12px 16px;border-radius:8px;font-family:monospace;color:#333;word-break:break-all}.blockchain-display{display:inline-block;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-weight:600;padding:8px 16px}.email-form{border-top:2px solid #f0f0f0;padding-top:32px}.email-form h2{margin:0 0 8px;color:#333;font-size:20px}.email-description{color:#666;margin:0 0 24px;line-height:1.5}.success-message{background-color:#d4edda;color:#155724;padding:12px 16px;border-radius:8px;margin-bottom:16px;border-left:4px solid #28a745}.error-message{background-color:#fee;color:#c33;padding:12px 16px;border-radius:8px;margin-bottom:16px;border-left:4px solid #c33}.form-group{margin-bottom:16px}.email-input{width:100%;padding:14px 18px;border:2px solid #ddd;border-radius:12px;font-size:15px;transition:border-color .3s;box-sizing:border-box}.email-input:focus{outline:none;border-color:#667eea}.email-input:disabled{background:#f5f5f5;cursor:not-allowed}.update-button{width:100%;padding:14px 24px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:12px;font-weight:600;font-size:16px;cursor:pointer;transition:all .3s}.update-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 16px #667eea66}.update-button:disabled{opacity:.5;cursor:not-allowed;transform:none}.profile-footer{margin-top:24px;padding-top:24px;border-top:2px solid #f0f0f0}.profile-footer p{color:#999;font-size:13px;line-height:1.5;margin:0}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;margin:0;padding:0}.App{width:100%;min-height:100vh}