body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, #4e73df, #1cc88a);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 350px;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    text-align: center;
}

h2 {
    margin-bottom: 20px;
}

.input-group {
    margin-bottom: 15px;
    text-align: left;
}

input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    outline: none;
}

button {
    width: 100%;
    padding: 10px;
    border: none;
    background: #4e73df;
    color: white;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #2e59d9;
}

.error {
    color: red;
    font-size: 12px;
}

/* Success Page */
.success-page {
    display: none;
    animation: fadeIn 1s ease-in-out forwards;
}

.checkmark {
    font-size: 80px;
    color: #1cc88a;
    animation: pop 0.6s ease forwards;
}

@keyframes pop {
    0% {
        transform: scale(0);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}