.header{display:flex;align-items:center;justify-content:space-between;padding:20px 0;margin-bottom:20px;gap:16px}.header-title{font-size:2.5rem;font-weight:900;color:#000;letter-spacing:-.5px;margin:0;flex:1}.header .icon{color:#000;cursor:pointer;transition:opacity .2s;flex-shrink:0}.header .icon:hover{opacity:.7}.search-container{display:flex;align-items:center;gap:8px;flex-shrink:0}.search-input{padding:8px 12px;border:2px solid #d1d5db;border-radius:8px;font-size:.95rem;width:200px;transition:border-color .2s,width .2s}.search-input:focus{outline:none;border-color:#8b5cf6;width:250px}@media (max-width: 768px){.header-title{font-size:2rem}.header .icon{width:20px;height:20px}.search-input{width:150px}.search-input:focus{width:180px}}.activity-card{background:#fff;border-radius:16px;padding:24px;box-shadow:0 4px 6px #00000012,0 2px 4px #0000000f}.activity-title{font-size:1.25rem;font-weight:600;color:#000;margin-bottom:20px}.chart-container{width:100%;height:200px}.no-activity{display:flex;align-items:center;justify-content:center;height:200px;color:#6b7280;font-size:.95rem}.link-card{background:#fff;border-radius:12px;padding:20px;display:flex;justify-content:space-between;align-items:center;box-shadow:0 4px 6px #0000001a,0 2px 4px #0000000f;transition:transform .2s,box-shadow .2s;min-height:80px;cursor:pointer}.link-card:hover{transform:translateY(-2px);box-shadow:0 6px 12px #00000026,0 4px 6px #0000001a}.link-content{flex:1;min-width:0}.link-title{font-size:1.1rem;font-weight:500;color:#fff;margin:0 0 4px;word-break:break-word}.link-url{font-size:.85rem;color:#fffc;margin:0;word-break:break-all;overflow:hidden;text-overflow:ellipsis}.link-actions{display:flex;gap:8px;align-items:center;flex-shrink:0}.action-btn{background:#fff3;border:none;border-radius:8px;padding:8px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s,transform .2s;color:#fff}.action-btn:hover{background:#ffffff4d;transform:scale(1.1)}.action-btn:active{transform:scale(.95)}.action-btn.copied{background:#10b9814d}.delete-btn:hover{background:#ef44444d}.add-button{position:fixed;bottom:30px;right:30px;width:60px;height:60px;border-radius:50%;background:#d1d5db;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 4px 12px #00000026;transition:transform .2s,box-shadow .2s,background .2s;color:#4b5563;z-index:100}.add-button:hover{transform:scale(1.1);box-shadow:0 6px 16px #0003;background:#9ca3af}.add-button:active{transform:scale(.95)}@media (max-width: 768px){.add-button{bottom:20px;right:20px;width:56px;height:56px}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{background:#fff;border-radius:16px;width:90%;max-width:500px;max-height:90vh;overflow-y:auto;box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{display:flex;justify-content:space-between;align-items:center;padding:24px;border-bottom:1px solid #e5e7eb}.modal-header h2{font-size:1.5rem;font-weight:600;color:#000;margin:0}.close-btn{background:none;border:none;cursor:pointer;padding:4px;display:flex;align-items:center;justify-content:center;color:#6b7280;transition:color .2s;border-radius:4px}.close-btn:hover{color:#000;background:#f3f4f6}.modal-form{padding:24px}.form-group{margin-bottom:20px}.form-group label{display:block;font-size:.875rem;font-weight:500;color:#374151;margin-bottom:8px}.form-group input{width:100%;padding:12px;border:1px solid #d1d5db;border-radius:8px;font-size:1rem;transition:border-color .2s,box-shadow .2s}.form-group input:focus{outline:none;border-color:#8b5cf6;box-shadow:0 0 0 3px #8b5cf61a}.color-options{display:flex;gap:12px;margin-top:8px}.color-option{width:40px;height:40px;border-radius:8px;border:3px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s}.color-option:hover{transform:scale(1.1)}.color-option.active{border-color:#000;box-shadow:0 0 0 2px #fff,0 0 0 4px #000}.error-message{background:#fee2e2;color:#dc2626;padding:12px;border-radius:8px;font-size:.875rem;margin-bottom:20px}.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:24px}.btn-cancel,.btn-save{padding:12px 24px;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s;border:none}.btn-cancel{background:#f3f4f6;color:#374151}.btn-cancel:hover{background:#e5e7eb}.btn-save{background:#8b5cf6;color:#fff}.btn-save:hover{background:#7c3aed;transform:translateY(-1px);box-shadow:0 4px 6px #8b5cf64d}.app{min-height:100vh;background:linear-gradient(135deg,#e8d5f2,#d4b8e8);padding:20px 20px 100px}.app-content{max-width:1200px;margin:0 auto;display:flex;flex-direction:column;gap:20px}.links-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin-top:20px}.empty-state{grid-column:1 / -1;text-align:center;padding:60px 20px;background:#ffffff80;border-radius:16px;color:#6b7280;font-size:1.1rem}.empty-state p{margin:0}.loading-state{display:flex;align-items:center;justify-content:center;min-height:100vh;color:#6b7280;font-size:1.2rem}.error-banner{background:#fee2e2;color:#dc2626;padding:12px 20px;border-radius:8px;margin:20px auto;max-width:1200px;display:flex;justify-content:space-between;align-items:center}.error-banner button{background:#dc2626;color:#fff;border:none;padding:6px 12px;border-radius:4px;cursor:pointer;font-size:.9rem}.error-banner button:hover{background:#b91c1c}@media (max-width: 768px){.app{padding:15px 15px 100px}.links-container{grid-template-columns:1fr}}*{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 Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}