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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #ffe2e5 0%, #e7d0ff 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 40px rgba(0, 0, 0, 0.1);
        }

        h1 {
            text-align: center;
            color: #333;
            margin-bottom: 30px;
            font-size: 2.5rem;
            background: linear-gradient(135deg, #fb7cff, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .controls {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .control-group {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 15px;
            border: 2px solid #e9ecef;
            transition: all 0.3s ease;
        }

        .control-group:hover {
            border-color: #667eea;
            transform: translateY(-2px);
        }

        .control-group label {
            display: block;
            margin-bottom: 10px;
            font-weight: 600;
            color: #495057;
            font-size: 1.1rem;
        }

        select {
            width: 100%;
            padding: 12px;
            border: 2px solid #dee2e6;
            border-radius: 10px;
            font-size: 16px;
            background: white;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        select:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 10px rgba(102, 126, 234, 0.3);
        }

        .comparison-area {
            background: #ffffff;
            border: 3px solid #e9ecef;
            border-radius: 15px;
            padding: 30px;
            margin-bottom: 30px;
            min-height: 400px;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
            position: relative;
            overflow: auto;
        }

        .paper {
            border: 3px solid #333;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 14px;
            color: #333;
            background: rgba(255, 255, 255, 0.9);
            border-radius: 5px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            transition: all 0.3s ease;
            cursor: pointer;
            position: relative;
        }

        .paper:hover {
            box-shadow: 0 12px 35px rgba(0, 0, 0, 0.25);
        }

        .paper.paper1 {
            background: linear-gradient(135deg, rgba(255, 107, 107, 0.3), rgba(255, 142, 83, 0.3));
            border-color: #ff6b6b;
        }

        .paper.paper2 {
            background: linear-gradient(135deg, rgba(74, 144, 226, 0.3), rgba(80, 227, 194, 0.3));
            border-color: #4a90e2;
        }

        .info-panel {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-top: 20px;
        }

        .info-card {
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            padding: 20px;
            border-radius: 15px;
            border: 2px solid #dee2e6;
            transition: all 0.3s ease;
        }

        .info-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }

        .info-card h3 {
            margin-bottom: 15px;
            color: #495057;
            font-size: 1.3rem;
            border-bottom: 2px solid #667eea;
            padding-bottom: 8px;
        }

        .size-info {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            margin-bottom: 15px;
        }

        .size-detail {
            background: white;
            padding: 10px;
            border-radius: 8px;
            text-align: center;
            border: 1px solid #e9ecef;
        }

        .size-detail strong {
            display: block;
            color: #667eea;
            font-size: 0.9rem;
            margin-bottom: 5px;
        }

        .size-detail span {
            font-size: 1.1rem;
            font-weight: 600;
            color: #333;
        }

        .ratio {
            background: #667eea;
            color: white;
            padding: 8px 15px;
            border-radius: 20px;
            font-weight: 600;
            text-align: center;
            margin-top: 10px;
        }

        .comparison-area.overlay {
            justify-content: center;
            align-items: center;
        }

        .comparison-area.overlay .paper {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        .comparison-area.overlay .paper.paper1 {
            z-index: 1;
            opacity: 0.8;
        }

        .comparison-area.overlay .paper.paper2 {
            z-index: 2;
            opacity: 0.8;
        }
            position: absolute;
            bottom: 10px;
            right: 10px;
            background: rgba(0, 0, 0, 0.7);
            color: white;
            padding: 5px 10px;
            border-radius: 15px;
            font-size: 12px;
        }

        #resetButton:hover {
            .comparison-area {
                flex-direction: column;
                gap: 20px;
                padding: 20px;
            }
            
            h1 {
                font-size: 2rem;
            }
        }