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

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

        .container {
            padding: 40px;
            width: 100%;
            max-width: 500px;
            background-color: #ffffff;
            border-radius: 15px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
        }

        label {
            display: block;
            margin-bottom: 10px;
            font-weight: 600;
            color: #333;
            font-size: 16px;
        }

        input[type="text"] {
            width: 100%;
            padding: 12px 15px;
            margin-bottom: 15px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 16px;
            transition: all 0.3s ease;
        }

        input[type="text"]:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 10px rgba(102, 126, 234, 0.2);
        }

        input[type="button"] {
            width: 100%;
            padding: 12px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-bottom: 20px;
        }

        input[type="button"]:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
        }

        input[type="button"]:active {
            transform: translateY(0);
        }

        .github {
            padding: 30px;
            margin-top: 0;
            font-size: 16px;
            background-color: #f8f9fa;
            border-radius: 12px;
            text-align: center;
            border-left: 4px solid #667eea;
            min-height: 100px;
        }

        .github img {
            border-radius: 50%;
            margin-bottom: 20px;
            border: 4px solid #667eea;
            transition: transform 0.3s ease;
        }

        .github img:hover {
            transform: scale(1.05);
        }

        .github h3 {
            color: #333;
            margin: 12px 0;
            font-size: 15px;
            font-weight: 600;
        }

        p {
            display: inline;
            font-size: 14px;
            color: #667eea;
            font-weight: 500;
        }

        .github a {
            color: #667eea;
            text-decoration: none;
            word-break: break-all;
            transition: color 0.3s ease;
        }

        .github a:hover {
            color: #764ba2;
            text-decoration: underline;
        }