.panel-custom {
            border-color: #87b87f;
        }
        
        .panel-custom .panel-heading {
            background-color: #87b87f;
            color: white;
            border-color: #87b87f;
        }
        
        .custom-font {
            font-family: customFont;
        }
        
        .drop-file {
            border: 3px dashed #ccc;
            padding: 30px;
            text-align: center;
            background: #f8f9fa;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s;
            margin-bottom: 20px;
        }
        
        .drop-file:hover {
            border-color: #87b87f;
            background: #f0f9f0;
        }
        
        .drop-file i {
            font-size: 48px;
            color: #6c757d;
            margin-bottom: 15px;
        }
        
        .font-preview {
            background: #fff;
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 20px;
            min-height: 120px;
            margin-top: 15px;
            box-shadow: inset 0 1px 1px rgba(0,0,0,.075);
        }
        
        .glyph-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
            gap: 12px;
            margin-top: 20px;
        }
        
        .glyph-item {
            border: 1px solid #ddd;
            border-radius: 6px;
            padding: 12px 5px;
            text-align: center;
            background: #fff;
            transition: all 0.2s;
            height: 60px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        
        .glyph-item:hover {
            background: #f8f9fa;
            border-color: #87b87f;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        }
        
        .glyph-char {
            font-size: 24px;
            margin-bottom: 5px;
        }
        
        .glyph-code {
            font-size: 10px;
            color: #777;
            font-family: monospace;
        }
        
        .font-info {
            background: #f8f9fa;
            padding: 15px;
            border-radius: 6px;
            margin-bottom: 20px;
            border-left: 4px solid #87b87f;
        }
        
        .slider-container {
            display: flex;
            align-items: center;
            gap: 15px;
            margin: 15px 0;
        }
        
        .slider-value {
            min-width: 70px;
            text-align: center;
            font-weight: bold;
            color: #87b87f;
            background: #f0f9f0;
            padding: 5px 10px;
            border-radius: 4px;
        }
        
        .font-size-slider {
            -webkit-appearance: none;
            appearance: none;
            width: 100%;
            height: 8px;
            background: #d3d3d3;
            border-radius: 4px;
            outline: none;
            flex: 1;
        }
        
        .font-size-slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 22px;
            height: 22px;
            border: 3px solid #fff;
            border-radius: 50%;
            background: #87b87f;
            cursor: pointer;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
        }
        
        .font-size-slider::-moz-range-thumb {
            width: 22px;
            height: 22px;
            border: 3px solid #fff;
            border-radius: 50%;
            background: #87b87f;
            cursor: pointer;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
        }
        
        .loading {
            display: none;
            text-align: center;
            padding: 30px;
        }
        
        .alert {
            display: none;
            margin-top: 15px;
            border-radius: 6px;
        }
        
        .feature-list {
            margin: 20px 0;
        }
        
        .feature-list li {
            margin-bottom: 10px;
        }
        
        .btn-custom {
            background-color: #87b87f;
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: 4px;
            transition: all 0.3s;
        }
        
        .btn-custom:hover {
            background-color: #6fa;
            color: white;
        }
        
        .supported-formats {
            margin-top: 25px;
            padding: 15px;
            background: #f8f9fa;
            border-radius: 6px;
        }
        
        .format-badge {
            display: inline-block;
            padding: 4px 8px;
            margin: 4px;
            background: #87b87f;
            color: white;
            border-radius: 4px;
            font-size: 12px;
        }