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

        body {
            font-family: 'Poppins', sans-serif;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            overflow-x: hidden;
        }

        .container {
            max-width: 800px;
            padding: 40px;
            margin: 20px;
        }

        .card {
            background: rgba(255, 255, 255, 0.95);
            border-radius: 20px;
            padding: 50px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            animation: slideIn 0.6s ease;
            backdrop-filter: blur(10px);
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .icon {
            font-size: 80px;
            text-align: center;
            margin-bottom: 20px;
            animation: bounce 2s infinite;
        }

        @keyframes bounce {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }

        h1 {
            color: #2d3748;
            text-align: center;
            margin-bottom: 20px;
            font-size: 2.5em;
            font-weight: 700;
        }

        p {
            color: #4a5568;
            text-align: center;
            margin-bottom: 15px;
            font-size: 1.1em;
            line-height: 1.6;
        }

        .info-box {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 20px;
            border-radius: 12px;
            margin: 20px 0;
        }

        .info-row {
            display: flex;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.2);
        }

        .info-row:last-child {
            border-bottom: none;
        }

        .info-label {
            font-weight: 600;
            opacity: 0.9;
        }

        .info-value {
            font-weight: 300;
            text-align: right;
            word-break: break-all;
            max-width: 60%;
        }

        .status-badge {
            display: inline-block;
            padding: 8px 20px;
            border-radius: 20px;
            font-weight: 600;
            margin: 10px 0;
        }

        .status-valid {
            background: #48bb78;
            color: white;
        }

        .status-invalid {
            background: #f56565;
            color: white;
        }

        .construction {
            background: #f7fafc;
            border-left: 4px solid #667eea;
            padding: 20px;
            margin: 20px 0;
            border-radius: 8px;
        }

        .construction h3 {
            color: #667eea;
            margin-bottom: 10px;
        }

        .progress-bar {
            width: 100%;
            height: 8px;
            background: #e2e8f0;
            border-radius: 10px;
            overflow: hidden;
            margin-top: 15px;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
            animation: progress 2s ease-in-out infinite;
        }

        @keyframes progress {
            0% { width: 30%; }
            50% { width: 70%; }
            100% { width: 30%; }
        }

        .alert {
            background: #fed7d7;
            border: 2px solid #fc8181;
            color: #742a2a;
            padding: 15px;
            border-radius: 8px;
            margin: 20px 0;
            text-align: center;
            font-weight: 600;
        }

        .success {
            background: #c6f6d5;
            border: 2px solid #68d391;
            color: #22543d;
        }

        .footer {
            text-align: center;
            margin-top: 30px;
            color: #718096;
            font-size: 0.9em;
        }

        .test-form {
            background: #f7fafc;
            padding: 20px;
            border-radius: 10px;
            margin-top: 20px;
        }

        .test-form h3 {
            color: #2d3748;
            margin-bottom: 15px;
        }

        .form-group {
            margin-bottom: 15px;
        }

        .form-group label {
            display: block;
            color: #4a5568;
            margin-bottom: 5px;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            padding: 10px;
            border: 2px solid #e2e8f0;
            border-radius: 8px;
            font-size: 16px;
            transition: all 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: #667eea;
        }

        .btn {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 12px 30px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            width: 100%;
            transition: all 0.3s ease;
        }

        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
        }

        @media (max-width: 600px) {
            .card {
                padding: 30px 20px;
            }

            h1 {
                font-size: 2em;
            }

            .info-row {
                flex-direction: column;
            }

            .info-value {
                max-width: 100%;
                text-align: left;
                margin-top: 5px;
            }
        }