.promo-block {
    position: relative;
    background: linear-gradient(135deg, #0b1b4a, #18366e);
    border-radius: 15px;
    padding: 40px;
    color: white;
    overflow: hidden;
    text-align: center;
    max-width: 350px;
    margin: 0 auto;
}

.stars-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.star {
    position: absolute;
    background: radial-gradient(circle, rgba(255,255,255,0.8), rgba(255,255,255,0));
    border-radius: 50%;
    animation: twinkle 3s infinite alternate;
}

.star-small {
    width: 10px;
    height: 10px;
    top: 20%;
    left: 30%;
    animation-duration: 2s;
}

.star-medium {
    width: 15px;
    height: 15px;
    top: 50%;
    left: 70%;
    animation-duration: 2.5s;
}

.star-large {
    width: 20px;
    height: 20px;
    top: 80%;
    left: 10%;
    animation-duration: 3s;
}

@keyframes twinkle {
    from {
        opacity: 0.5;
        transform: scale(1);
    }

    to {
        opacity: 1;
        transform: scale(1.2);
    }
}

.content {
    position: relative;
    z-index: 1;
}

h2 {
    font-size: 24px;
    margin-bottom: 15px;
}

p {
    font-size: 0.9rem;
    line-height: 1.5;
}
label {
    font-size: 0.9rem;
}
span {
    font-size: 0.8rem;
}
.btn-open-access {
    background: linear-gradient(90deg, #ff7e5f, #feb47b);
    border: none;
    color: white;
    padding: 12px 24px;
    font-size: 16px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.loginbody {
    display: flex;
    gap: 30px;
    flex-direction: column;
    align-items: anchor-center;
}
    .btn-open-access:hover {
        box-shadow: 0 8px 20px rgba(255,126,95,0.5);
        transform: translateY(-2px);
    }