*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;color:#333}#root{min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:20px}.header{display:flex;justify-content:space-between;align-items:center;padding:20px 0;margin-bottom:30px}.logo{font-size:24px;font-weight:700;color:#fff}.connect-btn{background:#fff;color:#667eea;border:none;padding:12px 24px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s}.connect-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #0003}.connect-btn:disabled{opacity:.7;cursor:not-allowed;transform:none}.card{background:#fff;border-radius:16px;padding:24px;margin-bottom:20px;box-shadow:0 4px 20px #0000001a}.card-title{font-size:20px;font-weight:600;margin-bottom:20px;color:#667eea}.form-group{margin-bottom:16px}.form-label{display:block;margin-bottom:8px;font-weight:500;color:#555}.form-input{width:100%;padding:12px;border:2px solid #e0e0e0;border-radius:8px;font-size:16px;transition:border-color .3s}.form-input:focus{outline:none;border-color:#667eea}.form-input::placeholder{color:#aaa}.btn{background:#667eea;color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s;width:100%}.btn:hover{background:#5568d3;transform:translateY(-2px)}.btn:disabled{background:#ccc;cursor:not-allowed;transform:none}.btn-secondary{background:#f0f0f0;color:#333}.btn-secondary:hover{background:#e0e0e0}.btn-danger{background:#e74c3c}.btn-danger:hover{background:#c0392b}.btn-success{background:#27ae60}.btn-success:hover{background:#219a52}.status{padding:12px;border-radius:8px;margin-bottom:16px;font-size:14px}.status-error{background:#fee;color:#c0392b;border:1px solid #fcc}.status-success{background:#efe;color:#27ae60;border:1px solid #cfc}.status-info{background:#eef;color:#667eea;border:1px solid #ccf}.offer-list{display:grid;gap:16px}.offer-item{background:#f8f9fa;border-radius:12px;padding:16px;border:2px solid #e0e0e0;transition:all .3s}.offer-item:hover{border-color:#667eea;transform:translate(4px)}.offer-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.offer-id{font-size:14px;color:#888}.offer-status{padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}.status-active{background:#d4edda;color:#155724}.status-expired{background:#f8d7da;color:#721c24}.status-cancelled{background:#fff3cd;color:#856404}.status-fulfilled{background:#d1ecf1;color:#0c5460}.offer-details{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-bottom:16px}.offer-detail{font-size:14px}.offer-detail-label{color:#888;font-size:12px;margin-bottom:4px}.offer-detail-value{font-weight:600;color:#333}.offer-actions{display:flex;gap:8px}.offer-actions button{flex:1}.tabs{display:flex;gap:8px;margin-bottom:20px}.tab{padding:10px 20px;background:#fff3;border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:14px;font-weight:500;transition:all .3s}.tab:hover{background:#ffffff4d}.tab-active{background:#fff;color:#667eea}@media (max-width: 768px){.header{flex-direction:column;gap:16px}.offer-details{grid-template-columns:1fr}.offer-actions{flex-direction:column}}.spinner{display:inline-block;width:20px;height:20px;border:3px solid #f3f3f3;border-top:3px solid #667eea;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}