.header{background-color:#fff;box-shadow:0 2px 10px #0000001a;padding:20px 0;margin-bottom:30px}.header-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}.header h1{color:var(--primary-color);margin:0;font-size:28px}.header-actions{display:flex;align-items:center;gap:15px}.filter-options{min-width:150px}.filter-select{padding:8px 12px;border-radius:4px;border:1px solid var(--gray-light);background-color:#fff;font-size:14px}.add-task-btn{display:flex;align-items:center;gap:5px;font-weight:500}@media (max-width: 768px){.header-content{flex-direction:column;align-items:flex-start}.header-actions{width:100%;justify-content:space-between}}.task-item{background-color:#fff;border-radius:8px;box-shadow:0 2px 8px #0000001a;padding:16px;transition:all .3s ease;border-left:4px solid var(--primary-color);display:flex;flex-direction:column;gap:12px}.task-item.completed{border-left-color:var(--success-color);opacity:.8}.task-item.overdue{border-left-color:var(--danger-color)}.task-header{display:flex;align-items:flex-start;gap:10px}.task-checkbox{position:relative;min-width:20px}.task-checkbox input{position:absolute;opacity:0;cursor:pointer;height:0;width:0}.task-checkbox label{position:absolute;top:0;left:0;height:20px;width:20px;background-color:#fff;border:2px solid var(--gray);border-radius:4px;cursor:pointer}.task-checkbox input:checked+label{background-color:var(--success-color);border-color:var(--success-color)}.task-checkbox label:after{content:"";position:absolute;display:none;left:6px;top:2px;width:5px;height:10px;border:solid white;border-width:0 2px 2px 0;transform:rotate(45deg)}.task-checkbox input:checked+label:after{display:block}.task-item h3{margin:0;font-size:18px;font-weight:500;color:var(--text-color);flex-grow:1}.completed-text{text-decoration:line-through;color:var(--gray)!important}.task-description{margin:8px 0;color:var(--gray);font-size:14px;line-height:1.5}.task-meta{display:flex;justify-content:space-between;margin-top:10px;font-size:14px}.meta-label{font-weight:500;margin-right:5px;color:var(--gray)}.overdue-text{color:var(--danger-color);font-weight:500}.task-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:10px}.edit-btn,.delete-btn{padding:6px 12px;font-size:13px}.task-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}@media (max-width: 768px){.task-list{grid-template-columns:1fr}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background-color:#fff;border-radius:8px;width:90%;max-width:500px;box-shadow:0 4px 20px 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#0000001a;transition:transform .3s ease}.stat-card:hover{transform:translateY(-5px)}.stat-card h3{margin:0 0 15px;font-size:16px;color:var(--gray)}.stat-value{font-size:32px;font-weight:700;margin:0}.stat-card.total{border-top:4px solid var(--primary-color)}.stat-card.total .stat-value{color:var(--primary-color)}.stat-card.today{border-top:4px solid var(--accent-color)}.stat-card.today .stat-value{color:var(--accent-color)}.stat-card.overdue{border-top:4px solid var(--danger-color)}.stat-card.overdue .stat-value{color:var(--danger-color)}.stat-card.completed{border-top:4px solid var(--success-color)}.stat-card.completed .stat-value{color:var(--success-color)}.completion-rate{margin-top:10px}.progress-bar{height:8px;background-color:var(--gray-light);border-radius:4px;margin-bottom:5px;overflow:hidden}.progress{height:100%;background-color:var(--success-color);border-radius:4px}@media (max-width: 768px){.stats-container{grid-template-columns:repeat(2,1fr)}}@media (max-width: 480px){.stats-container{grid-template-columns:1fr}}.dashboard{display:flex;flex-direction:column;gap:30px}.task-section{background-color:#fff;border-radius:8px;box-shadow:0 2px 10px #0000001a;padding:20px}.task-section h2{margin-bottom:20px;color:var(--secondary-color);font-size:20px;border-bottom:2px solid var(--gray-light);padding-bottom:10px}.empty-state{text-align:center;padding:40px 0;color:var(--gray)}.empty-state p{margin-top:10px;font-size:16px}:root{--primary-color: #4a6fa5;--secondary-color: #166088;--accent-color: #4fc3dc;--background-color: #f8f9fa;--text-color: #333;--danger-color: #dc3545;--success-color: #28a745;--warning-color: #ffc107;--gray-light: #e9ecef;--gray: #6c757d}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Roboto,sans-serif;background-color:var(--background-color);color:var(--text-color);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:20px}button{cursor:pointer;border:none;border-radius:4px;padding:8px 16px;font-size:14px;transition:all .3s ease}button:hover{opacity:.9}input,select,textarea{padding:10px;border:1px solid var(--gray-light);border-radius:4px;font-size:14px;width:100%}input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent-color)}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-danger{background-color:var(--danger-color);color:#fff}.btn-success{background-color:var(--success-color);color:#fff}.btn-warning{background-color:var(--warning-color);color:var(--text-color)}.card{background-color:#fff;border-radius:8px;box-shadow:0 2px 10px #0000001a;padding:20px;margin-bottom:20px}.form-group{margin-bottom:15px}.form-group label{display:block;margin-bottom:5px;font-weight:500}.badge{padding:4px 8px;border-radius:4px;font-size:12px;font-weight:500}.badge-high{background-color:var(--danger-color);color:#fff}.badge-medium{background-color:var(--warning-color);color:var(--text-color)}.badge-low{background-color:var(--success-color);color:#fff}.flex{display:flex}.justify-between{justify-content:space-between}.items-center{align-items:center}.gap-2{gap:8px}.gap-4{gap:16px}.mt-2{margin-top:8px}.mt-4{margin-top:16px}.mb-2{margin-bottom:8px}.mb-4{margin-bottom:16px}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}@media (max-width: 768px){.grid{grid-template-columns:1fr}}