body{font-family:Arial,sans-serif;margin:0;background-color:#f8f9fa}.app-container{min-height:100vh;display:flex;flex-direction:column;align-items:center;padding:20px;background:linear-gradient(to bottom,#e9f2ff,#fff)}.app-title{font-size:2.5rem;color:#007bff;font-weight:700;margin-bottom:20px;text-shadow:1px 1px 2px rgba(0,0,0,.2)}.boards-container{display:flex;flex-direction:row;gap:20px;justify-content:center;width:100%}@media (max-width: 768px){.board-lists-container{flex-direction:column;gap:10px}}.board{background-color:#fff;border:1px solid #dee2e6;border-radius:8px;box-shadow:0 4px 8px #0000001a;padding:20px;max-width:fit-content;width:100%;display:flex;flex-direction:column;gap:20px}.board-title{font-size:1.7rem;font-weight:600;color:#495057;margin-bottom:10px;text-align:center}.board-lists-container{display:flex;gap:20px;justify-content:space-between;overflow-x:auto}.change-title{display:flex;justify-content:space-between;align-items:center;width:200px;margin:0 auto;border-radius:5px}.change-title:hover{scale:1.1;transition:all .3s ease}.change-title-button{background-color:#007bff;border:none;border-radius:5px;color:#fff;cursor:pointer;font-size:1rem;padding:5px 10px;width:150px;margin:0 auto}.change-title-button:hover{background-color:green;scale:1.1;transition:all .3s ease}.task-list{background-color:#fff;border:1px solid #e0e0e0;border-radius:12px;padding:20px;margin:15px;display:flex;flex-direction:column;gap:15px;box-shadow:0 4px 8px #0000001a;transition:box-shadow .3s ease}.task-list:hover{box-shadow:0 8px 16px #0003}.task-list-title{font-size:1.5rem;font-weight:700;color:#333;text-align:left;margin-bottom:15px}.add-task-form{display:flex;align-items:center;gap:10px}.add-task-input{flex-grow:1;padding:10px;font-size:1rem;border:1px solid #e0e0e0;border-radius:8px;box-shadow:inset 0 2px 4px #0000001a;transition:border-color .3s ease}.add-task-input:focus{border-color:#007bff;outline:none}.add-task-button{background-color:#007bff;color:#fff;border:none;border-radius:8px;padding:10px 15px;font-size:1rem;cursor:pointer;transition:background-color .3s ease,transform .3s ease}.add-task-button:hover{background-color:#09d614;transform:scale(1.02);color:#000}.assign-task-select{width:100%;padding:5px;margin-top:5px;font-size:.9rem;border:1px solid #ced4da;border-radius:4px;background-color:#fff;cursor:pointer}.task-card{background-color:#fff;border:1px solid #ced4da;border-radius:6px;padding:10px;box-shadow:0 2px 4px #0000001a;display:flex;flex-direction:column;gap:4px;transition:transform .2s,box-shadow .2s}.task-card:hover{transform:translateY(-2px);box-shadow:0 4px 8px #0003}.task-card-title{font-weight:600;font-size:1rem;color:#495057}.task-card-assignee{font-size:.9rem;color:#868e96}.delete-task-button{background-color:#dc3545;color:#fff;border:none;border-radius:4px;padding:5px 10px;font-size:.8rem;cursor:pointer;transition:background-color .3s ease}.delete-task-button:hover{background-color:#a71d2a}