body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    margin: 0;
    padding: 0;
}

.container {
    width: 350px;
    margin: 80px auto;
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    text-align: center;
}

h2 {
    margin-bottom: 20px;
}

input {
    width: 90%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    width: 95%;
    padding: 10px;
    background: #4facfe;
    border: none;
    color: white;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #007bff;
}

a {
    display: block;
    margin-top: 10px;
    color: #007bff;
    text-decoration: none;
}




.navbar {
    background: #4facfe;
    color: white;
    padding: 15px;
    display: flex;
    justify-content: space-between;
}

.cards {
    display: flex;
    gap: 20px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.card {
    flex: 1;
    min-width: 200px;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.card h3 {
    margin: 10px 0;
    font-size: 24px;
}

.ref-box {
    margin-top: 30px;
    background: white;
    padding: 20px;
    border-radius: 10px;
}

input {
    width: 80%;
}

.copy-btn {
    padding: 10px;
    background: #4facfe;
    color: white;
    border: none;
    cursor: pointer;
}