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solid #5c6ac4;transition:all .3s ease}.activity-item:hover{background:#e9ecef;transform:translate(4px)}.activity-item.settlement{border-left-color:#27ae60}.activity-icon{font-size:28px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:8px}.activity-details{flex:1}.activity-title{font-weight:600;color:#2c3e50;margin-bottom:4px;font-size:16px}.activity-subtitle{color:#555;font-size:14px;margin-bottom:4px}.activity-splits{color:#7f8c8d;font-size:13px;margin-top:4px}.activity-date{color:#95a5a6;font-size:12px;margin-top:8px}@media (max-width: 768px){.activity-item{padding:12px;gap:12px}.activity-icon{width:36px;height:36px;font-size:24px}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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#0000001a;margin-bottom:20px}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000;padding:20px}.modal{background:#fff;border-radius:16px;padding:32px;max-width:500px;width:100%;max-height:90vh;overflow-y:auto;box-shadow:0 20px 60px #0000004d}.modal h2{margin-bottom:24px;color:#2c3e50}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;font-weight:500;color:#555}.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px;border:2px solid #e0e0e0;border-radius:8px;font-size:16px;font-family:inherit;transition:border-color .3s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:#5c6ac4}.checkbox-group{display:flex;flex-direction:column;gap:12px;padding:12px;background:#f8f9fa;border-radius:8px}.checkbox-item{display:flex;align-items:center;gap:8px}.checkbox-item input[type=checkbox]{width:auto;margin:0;cursor:pointer}.button-group{display:flex;gap:12px;margin-top:24px}.button-group button{flex:1}.loading{text-align:center;padding:40px;color:#fff;font-size:18px}.error{background:#ffe0e0;color:#c0392b;padding:16px;border-radius:8px;margin-bottom:20px;border-left:4px solid #c0392b}.empty-state{text-align:center;padding:40px;color:#999}.empty-state h3{color:#666;margin-bottom:8px}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease}@media (max-width: 768px){#root{padding:10px}.card{padding:16px}.modal{padding:24px}.button-group{flex-direction:column}}