.form-container{display:flex;flex-direction:column;align-items:center;justify-content:center;margin:50px auto;padding:20px;border-radius:8px;box-shadow:0 4px 6px #0000001a;max-width:400px}.form-input{width:90%;padding:10px;margin:10px 0;border:1px solid #ccc;border-radius:4px;box-sizing:border-box}.form-button{width:95%;padding:10px;margin:20px 0;background-color:#007bff;color:#fff;border:none;border-radius:4px;cursor:pointer;transition:background-color .2s ease-in-out}.form-button:hover{background-color:#0056b3}.required-field:after{content:" *";color:red}.assignments-header{display:flex;align-items:center;gap:12px;margin-bottom:12px}.assignments-header h2{margin:0}.message{font-size:14px;padding:4px 8px;border-radius:4px}.message.success{background:#e8f8ec;color:#2e7d32}.message.error{background:#fdecea;color:#c62828}.delete-btn{opacity:0}ul li:hover .delete-btn{opacity:1}.center-header{display:flex;justify-content:center;margin:16px 0}.center-header h2{margin:0}.pagination{display:flex;gap:6px;margin-top:12px}.pagination button{padding:4px 8px;border:1px solid #ccc;background:#fff;cursor:pointer}.pagination button.active{background:#3498db;color:#fff;border-color:#3498db}.pagination button:disabled{opacity:.4;cursor:not-allowed}.loader-container{display:flex;justify-content:center;align-items:center}.loader{border:5px solid #f3f3f3;border-top:5px solid #3498db;border-radius:50%;width:50px;height:50px;animation:spin 2s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000073;display:flex;justify-content:center;align-items:center;z-index:9999}.modal-box{background:#fff;padding:20px 24px;border-radius:8px;width:360px;box-shadow:0 4px 12px #0003}.modal-title{margin-top:0;margin-bottom:12px;color:#1677ff}.modal-title.error{color:#c60808}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.modal-btn{padding:6px 14px;border-radius:4px;border:1px solid #999;background:#fff;cursor:pointer}div{font-family:Arial,sans-serif}.notes-section{margin-bottom:2rem}.notes-section h2{color:#333;font-size:24px}.note{background-color:#f9f9f9;border-left:5px solid #007bff;margin:10px 0;padding:10px 15px;border-radius:5px}form{background-color:#fff;padding:20px;border-radius:8px;box-shadow:0 2px 4px #0000001a;max-width:500px;margin:auto}form h2{color:#333;font-size:24px;margin-bottom:20px}form label{font-weight:700;margin-top:10px}form input,form textarea{width:100%;padding:8px;margin:8px 0 16px;border:1px solid #ccc;border-radius:4px;box-sizing:border-box}form input[type=submit]{background-color:#007bff;color:#fff;padding:10px 20px;border:none;border-radius:4px;cursor:pointer;font-size:16px}form input[type=submit]:hover{background-color:#0056b3}.assignment-container{padding:10px;margin:20px 0;border:1px solid #ccc;border-radius:5px}.assignment-title{color:#333}.assignment-date{color:#999;font-size:.8rem}.assignment-table{width:100%;border-collapse:collapse;margin-top:16px;font-size:14px}.assignment-table th,.assignment-table td{padding:10px 12px;border-bottom:1px solid #ddd;text-align:left}.assignment-table th{background:#f5f5f5;font-weight:600}.assignment-table tr:hover{background:#fafafa}.delete-button{padding:6px 10px;background:#e74c3c;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:12px}.delete-button:hover{background:#c0392b}.assignments-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.create-btn{padding:6px 12px;background:#3498db;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:14px}.create-btn:hover{background:#2980b9}.student-container{padding:10px;margin:20px 0;border:1px solid #ccc;border-radius:5px}.student-title{color:#333}.grade-button{background-color:#4bc4f4;color:#fff;border:none;padding:10px 20px;border-radius:5px;cursor:pointer;transition:background-color .3s}.grade-button:hover{background-color:#75bae9}.info-label{position:relative;display:inline-flex;align-items:center;gap:4px;cursor:default}.info-icon{display:inline-flex;justify-content:center;align-items:center;width:14px;height:14px;font-size:10px;font-weight:700;border-radius:50%;background:#ccc;color:#333;position:relative;top:-2px}.tooltip{visibility:hidden;opacity:0;transition:opacity .2s;position:absolute;left:100%;top:50%;transform:translateY(-50%);margin-left:8px;background:#333;color:#fff;padding:6px 8px;border-radius:4px;font-size:12px;white-space:nowrap;z-index:10}.info-label:hover .tooltip{visibility:visible;opacity:1}