:root{--primary:#4361ee;--primary-light:#4895ef;--primary-dark:#3f37c9;--accent:#f72585;--success:#4cc9f0;--warning:#f8961e;--danger:#f94144;--light:#f8f9fa;--dark:#212529;--gray:#adb5bd;--shadow:0 4px 6px rgba(0,0,0,.1);--font-main:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Open Sans","Helvetica Neue",sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:#f0f2f5;color:var(--dark);font-family:var(--font-main);line-height:1.6;overflow-x:hidden}.container{margin:0 auto;max-width:1200px;padding:20px}header{background-color:var(--primary);box-shadow:var(--shadow);color:#fff;padding:20px 0}header h1{margin-bottom:10px;text-align:center}header p{opacity:.8;text-align:center}.tabs{background-color:#fff;border-radius:5px 5px 0 0;box-shadow:var(--shadow);display:flex;margin-top:20px;overflow:hidden}.tab-button{background-color:#f1f1f1;border:none;color:var(--dark);cursor:pointer;flex-grow:1;font-size:16px;font-weight:600;outline:none;padding:14px 20px;transition:.3s}.tab-button:hover{background-color:#ddd}.tab-button.active{background-color:#fff;border-bottom:3px solid var(--primary);color:var(--primary)}.tab-content{animation:fadeIn .5s;background-color:#fff;border-radius:0 0 5px 5px;box-shadow:var(--shadow);display:none;opacity:0;padding:20px;transition:opacity .3s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.tab-content.active{display:block;opacity:1}.tab-content.active>*{animation:slideIn .4s ease forwards}.tab-content.active>:first-child{animation-delay:.1s}.tab-content.active>:nth-child(2){animation-delay:.2s}.tab-content.active>:nth-child(3){animation-delay:.3s}.tab-content.active>:nth-child(4){animation-delay:.4s}.tab-button.active{overflow:hidden;position:relative}.tab-button.active:after{animation:slideInFromLeft .3s ease forwards;background:var(--primary);bottom:0;content:"";height:3px;left:0;position:absolute;width:100%}@keyframes slideInFromLeft{0%{transform:translateX(-100%)}to{transform:translateX(0)}}.form-group{margin-bottom:20px}label{display:block;font-weight:600;margin-bottom:8px}input,select,textarea{border:1px solid var(--gray);border-radius:4px;font-family:var(--font-main);font-size:16px;padding:10px;width:100%}input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 2px rgba(67,97,238,.2);outline:none}button{background-color:var(--primary);border:none;border-radius:4px;color:#fff;cursor:pointer;font-size:16px;font-weight:600;padding:12px 24px;transition:background-color .3s}button:hover{background-color:var(--primary-dark)}button.secondary{background-color:var(--gray)}button.secondary:hover{background-color:#95a5a6}.list-container{margin-top:30px}.list-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:15px}.list-filters{display:flex;gap:10px}.list-filters select{width:auto}.expense-list,.task-list{list-style:none}.expense-item,.task-item{background-color:#fff;border-radius:5px;box-shadow:0 2px 4px rgba(0,0,0,.05);margin-bottom:10px;padding:15px;transition:transform .2s ease}.expense-item:hover,.task-item:hover{box-shadow:0 4px 8px rgba(0,0,0,.1);transform:translateY(-2px)}.expense-header,.task-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:10px}.expense-title,.task-title{font-size:18px;font-weight:600}.task-priority{border-radius:20px;color:#fff;font-size:12px;font-weight:600;padding:4px 8px}.priority-1{background-color:var(--danger)}.priority-2{background-color:var(--warning)}.priority-3{background-color:var(--success)}.expense-description,.task-description{color:#555;margin-bottom:10px}.expense-meta,.task-meta{color:var(--gray);display:flex;font-size:14px;justify-content:space-between}.expense-actions,.task-actions{display:flex;gap:10px}.action-btn{background:none;border:none;color:var(--gray);cursor:pointer;padding:5px;transition:color .2s}.action-btn:hover{color:var(--primary)}.delete-btn:hover{color:var(--danger)}.complete-btn:hover{color:var(--success)}.modal{animation:fadeIn .3s;background-color:rgba(0,0,0,.5);display:none;height:100%;left:0;overflow-y:auto;position:fixed;top:0;width:100%;z-index:1000;-webkit-overflow-scrolling:touch}.modal-content{animation:slideIn .3s;background-color:#fff;border-radius:5px;box-shadow:var(--shadow);margin:10% auto;max-width:500px;padding:20px;position:relative;width:95%}@keyframes slideIn{0%{opacity:0;transform:translateY(-50px)}to{opacity:1;transform:translateY(0)}}@media (max-width:768px){.modal-content{margin:5% auto;padding:15px;width:90%}input[type=datetime-local]{-webkit-appearance:none;appearance:none;font-size:16px;min-height:44px}}.close-modal{color:var(--gray);cursor:pointer;font-size:24px;position:absolute;right:20px;top:15px}.close-modal:hover{color:var(--dark)}.modal-title{border-bottom:1px solid #eee;margin-bottom:20px;padding-bottom:10px}.balance-overview{background-color:#fff;border-radius:5px;box-shadow:var(--shadow);margin-top:20px;padding:20px}.balance-title{font-size:18px;font-weight:600;margin-bottom:15px}.balance-list{list-style:none}.balance-item{border-bottom:1px solid #eee;display:flex;justify-content:space-between;padding:10px 0}.balance-positive{color:var(--success)}.balance-negative{color:var(--danger)}.empty-state{color:var(--gray);padding:40px 0;text-align:center}.empty-state p{margin-top:10px}.case-study{margin:0 auto;max-width:900px}.case-study section{background:#fff;border-radius:8px;box-shadow:var(--shadow);margin-bottom:40px;padding:20px}.case-study h3{border-bottom:2px solid var(--primary-light);color:var(--primary);margin-bottom:20px;padding-bottom:10px}.feature-list{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));list-style:none}.feature-list li{align-items:flex-start;background:var(--light);border-radius:8px;display:flex;gap:15px;padding:15px;transition:transform .2s}.feature-list li:hover{transform:translateY(-2px)}.feature-icon{background:#fff;border-radius:8px;box-shadow:var(--shadow);font-size:24px;padding:10px}.feature-list h4{color:var(--primary-dark);margin-bottom:5px}.tech-grid{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.tech-card{background:var(--light);border-radius:8px;padding:20px;transition:transform .2s}.tech-card:hover{transform:translateY(-2px)}.tech-card h4{color:var(--primary-dark);margin-bottom:15px}.tech-card ul{list-style:none}.tech-card li{border-bottom:1px solid rgba(0,0,0,.1);padding:8px 0}.tech-card li:last-child{border-bottom:none}.roadmap{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.roadmap-item{background:var(--light);border-radius:8px;padding:20px;transition:transform .2s}.roadmap-item:hover{transform:translateY(-2px)}.status{border-radius:12px;display:inline-block;font-size:12px;font-weight:600;margin-bottom:10px;padding:4px 8px}.status.upcoming{background:var(--primary-light);color:#fff}.status.planned{background:var(--gray);color:#fff}.roadmap-item h4{color:var(--primary-dark);margin-bottom:10px}@media (max-width:768px){.feature-list,.roadmap,.tech-grid{grid-template-columns:1fr}.case-study section{margin-bottom:20px;padding:15px}.container,.tab-button{padding:10px}.tab-button{font-size:14px}.modal-content{margin:20% auto;width:90%}.list-header{align-items:stretch;flex-direction:column;gap:10px}.list-filters{flex-direction:column;gap:8px}.list-filters select{width:100%}.expense-item,.task-item{padding:12px}.task-header{flex-direction:column;gap:8px}.task-title{font-size:16px;word-break:break-word}.task-meta{align-items:flex-start;flex-direction:column;font-size:12px;gap:4px}.task-actions{justify-content:flex-start;margin-top:10px}.action-btn{padding:8px}.form-group{margin-bottom:15px}input,select,textarea{font-size:14px;padding:8px}button{font-size:14px;padding:10px;width:100%}}@media (max-width:480px){header h1{font-size:20px}.task-description,header p{font-size:14px}.task-priority{font-size:11px;padding:3px 6px}}footer{background-color:var(--primary);box-shadow:var(--shadow);color:#fff;margin-top:40px;padding:20px 0;text-align:center}footer p{margin:0;opacity:.9}.loading-overlay{align-items:center;background:hsla(0,0%,100%,.9);bottom:0;display:flex;justify-content:center;left:0;position:fixed;right:0;top:0;transition:opacity .3s;z-index:9999}.loading-spinner{animation:spin 1s linear infinite;border:3px solid var(--light);border-radius:50%;border-top-color:var(--primary);height:50px;width:50px}@keyframes spin{to{transform:rotate(1turn)}}.offline-notification{background:var(--warning);color:#fff;font-weight:600;left:0;padding:10px;position:fixed;right:0;text-align:center;top:0;transform:translateY(-100%);transition:transform .3s ease;z-index:9998}.offline-notification.show{transform:translateY(0)}.error-message{align-items:center;background:var(--danger);border-radius:4px;color:#fff;display:flex;justify-content:space-between;margin-bottom:15px;padding:10px}.error-message button{background:none;border:none;color:#fff;cursor:pointer;font-size:20px;padding:0 5px}