/* Tool Hero Section */
        .tool-hero {
            background: linear-gradient(135deg, #e6f4ff 0%, #f0f7ff 100%);
            padding: 80px 0 40px;
            text-align: center;
        }
        
        .tool-hero h1 {
            font-size: 42px;
            margin-bottom: 15px;
            color: var(--dark);
        }
        
        .tool-hero p {
            font-size: 18px;
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto 30px;
        }
        
        /* Converter Section */
        .converter-section {
            padding: 60px 0;
        }
        
        .converter-container {
            display: flex;
            gap: 40px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        
        .preview-column {
            flex: 1;
            min-width: 300px;
            background: white;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            padding: 30px;
            display: flex;
            flex-direction: column;
        }
        
        .column-title {
            font-size: 22px;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--dark);
        }
        
        .column-title i {
            color: var(--primary);
        }
        
        .preview-area {
            flex: 1;
            background: #f8f9fa;
            border: 2px dashed var(--light-gray);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            overflow: hidden;
            position: relative;
            min-height: 300px;
        }
        
        .preview-area img {
            max-width: 100%;
            max-height: 100%;
            display: block;
        }
        
        .placeholder-text {
            text-align: center;
            color: var(--gray);
            padding: 20px;
        }
        
        .placeholder-text i {
            font-size: 48px;
            margin-bottom: 15px;
            color: var(--light-gray);
        }
        
        .file-info {
            display: flex;
            justify-content: space-between;
            background: #f0f7ff;
            padding: 15px;
            border-radius: 8px;
            margin-top: 10px;
        }
        
        .info-item {
            text-align: center;
        }
        
        .info-label {
            font-size: 14px;
            color: var(--gray);
            margin-bottom: 5px;
        }
        
        .info-value {
            font-weight: 600;
            color: var(--dark);
        }
        
        .controls {
            display: flex;
            justify-content: space-between;
            gap: 15px;
            margin-top: 20px;
        }
        
        .btn {
            padding: 12px 20px;
            border-radius: 8px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 16px;
        }
        
        .btn-primary {
            background: var(--primary);
            color: white;
            flex: 1;
        }
        
        .btn-primary:hover {
            background: #0d5cb6;
        }
        
        .btn-secondary {
            background: white;
            color: var(--primary);
            border: 1px solid var(--light-gray);
        }
        
        .btn-secondary:hover {
            background: #f5f9ff;
            border-color: var(--primary);
        }
        
        .btn-disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }
        
         /* Settings Panel */
        .settings-panel {
            background: white;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            padding: 30px;
            margin-bottom: 40px;
        }
        
        .panel-title {
            font-size: 22px;
            margin-bottom: 25px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--dark);
        }
        
        .panel-title i {
            color: var(--primary);
        }
        
        .settings-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
        }
        
        .setting-group {
            margin-bottom: 20px;
        }
        
        .setting-label {
            display: block;
            margin-bottom: 10px;
            font-weight: 500;
            color: var(--dark);
        }
        
        .slider-container {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .slider {
            flex: 1;
            height: 8px;
            -webkit-appearance: none;
            background: #e9ecef;
            border-radius: 4px;
            outline: none;
        }
        
        .slider::-webkit-slider-thumb {
            -webkit-appearance: none;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--primary);
            cursor: pointer;
        }
        
        .slider-value {
            min-width: 40px;
            text-align: center;
            font-weight: 600;
            color: var(--dark);
        }
        
        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .checkbox-group input {
            width: 18px;
            height: 18px;
        }
        
        .checkbox-group label {
            color: var(--gray);
        }
        
        /* Info Section */
        .info-section {
            background: linear-gradient(135deg, #f0f9ff 0%, #e6f7ff 100%);
            padding: 60px 0;
        }
        
        .info-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .info-card {
            background: white;
            padding: 30px;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
        }
        
        .info-card i {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 20px;
        }
        
        .info-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--dark);
        }
        
        .info-card p {
            color: var(--gray);
            line-height: 1.7;
        }