:root {
            --primary-color: #2c7da0;
            --secondary-color: #a9d6e5;
            --light-bg: #f8f9fa;
            --dark-text: #212529;
            --border-color: #dee2e6;
            --success-color: #198754;
            --warning-color: #ffc107;
            --error-color: #dc3545;
        }
         
        .grade-input-group {
            margin-bottom: 1.5rem;
        }
        
        .grade-input {
            max-width: 120px;
            text-align: center;
        }
        
        .grade-slider {
            width: 100%;
            margin-top: 0.5rem;
        }
        
        .grade-visual {
            height: 20px;
            background: linear-gradient(to right, #dc3545 0%, #ffc107 50%, #198754 100%);
            border-radius: 10px;
            margin: 1rem 0;
            position: relative;
        }
        
        .grade-marker {
            position: absolute;
            top: -5px;
            width: 3px;
            height: 30px;
            background-color: #000;
        }
        
        .grade-label {
            position: absolute;
            top: 25px;
            font-size: 0.8rem;
            transform: translateX(-50%);
            white-space: nowrap;
        }
          .toast-close {
            background: none;
            border: none;
            font-size: 1.25rem;
            cursor: pointer;
            color: var(--dark-text);
            opacity: 0.5;
        }