body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background-color: #f4f6f9;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
        .coupon-card {
            background: linear-gradient(135deg, #ff1e43, #d60024);
            color: white;
            border-radius: 15px;
            padding: 30px;
            max-width: 400px;
            text-align: center;
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
            position: relative;
        }
        .coupon-card h2 {
            margin: 0 0 10px 0;
            font-size: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .coupon-card p {
            font-size: 14px;
            line-height: 1.5;
            margin: 0 0 20px 0;
            opacity: 0.9;
        }
        .code-container {
            background-color: rgba(255, 255, 255, 0.2);
            border: 2px dashed #ffffff;
            padding: 12px;
            border-radius: 8px;
            font-size: 18px;
            font-weight: bold;
            letter-spacing: 1px;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
        }
        .code-container:hover {
            background-color: rgba(255, 255, 255, 0.3);
        }
        .tooltip {
            font-size: 11px;
            display: block;
            margin-top: 5px;
            opacity: 0.7;
        }