* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            padding: 30px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
            backdrop-filter: blur(10px);
        }

        h1 {
            text-align: center;
            color: #333;
            margin-bottom: 30px;
            font-size: 2.5rem;
            background: linear-gradient(135deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .input-section {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 30px;
        }

        .text-input-group {
            display: flex;
            flex-direction: column;
        }

        label {
            font-weight: 600;
            margin-bottom: 8px;
            color: #555;
            font-size: 1.1rem;
        }

        textarea {
            width: 100%;
            height: 200px;
            padding: 15px;
            border: 2px solid #e1e5e9;
            border-radius: 12px;
            font-size: 14px;
            font-family: inherit;
            resize: vertical;
            transition: all 0.3s ease;
            background: #fafbfc;
        }

        textarea:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
            transform: translateY(-2px);
        }

        .controls {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 30px;
            flex-wrap: wrap;
            gap: 15px;
        }

        .order-control {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .order-control label {
            margin: 0;
            font-size: 1rem;
        }

        select {
            padding: 10px 15px;
            border: 2px solid #e1e5e9;
            border-radius: 8px;
            font-size: 14px;
            background: white;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        select:focus {
            outline: none;
            border-color: #667eea;
        }

        .buttons {
            display: flex;
            gap: 10px;
        }

        button {
            padding: 12px 24px;
            border: none;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
        }

        .btn-secondary {
            background: #f8f9fa;
            color: #333;
            border: 2px solid #e9ecef;
        }

        .btn-secondary:hover {
            background: #e9ecef;
            transform: translateY(-1px);
        }

        .output-section {
            margin-top: 30px;
        }

        .interlinear-display {
            background: #f8f9fa;
            border-radius: 12px;
            padding: 25px;
            border: 1px solid #e9ecef;
            min-height: 200px;
        }

        .sentence-pair {
            margin-bottom: 25px;
            padding: 20px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: transform 0.2s ease;
        }

        .sentence-pair:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .sentence-line {
            padding: 8px 0;
            font-size: 16px;
            line-height: 1.6;
        }

        .source-line {
            font-weight: 500;
            color: #2c3e50;
        }

        .target-line {
            color: #7f8c8d;
            font-style: italic;
        }

        .sentence-number {
            display: inline-block;
            background: linear-gradient(135deg, #667eea, #764ba2);
            color: white;
            padding: 4px 10px;
            border-radius: 15px;
            font-size: 12px;
            font-weight: bold;
            margin-bottom: 10px;
            min-width: 30px;
            text-align: center;
        }

        .empty-state {
            text-align: center;
            color: #6c757d;
            font-style: italic;
            padding: 40px;
        }

        @media (max-width: 768px) {
            .input-section {
                grid-template-columns: 1fr;
            }
            
            .controls {
                flex-direction: column;
                align-items: stretch;
            }
            
            .buttons {
                justify-content: center;
            }
            
            h1 {
                font-size: 2rem;
            }
        }