* {
    text-align: center;
}


button {
    margin-top: 2rem;
    background: #2A7B9B;
    background: linear-gradient(90deg, rgba(42, 123, 155, 1) 0%, rgba(63, 158, 145, 1) 12%, rgba(87, 199, 133, 1) 30%, rgba(133, 206, 118, 1) 59%, rgba(237, 221, 83, 1) 100%);
    color: black;
    padding: 0.5rem 2rem;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 1rem;
    border: none;
    box-shadow: 0 0 40px #145c9e;
    transform: scale(1.1);
}

.buton {
    padding: 0.7rem 3rem;
    background: #020024;
    background: radial-gradient(circle, rgba(2, 0, 36, 1) 0%, rgba(9, 9, 121, 1) 33%, rgba(0, 212, 255, 1) 100%);
    color: whitesmoke;
    font-size: 1rem;
    border-radius: 1rem;
    border: none;
    box-shadow: 0 0 30px #9222be;
    transform: scale(1.1);
}


.img-container {
    position: relative;
}


img {
    opacity: 1;
    transition: opacity 0.4s ease;
}

img.fade {
    opacity: 0;
}


.spinner {
    display: none;
    margin: 20px auto;
    width: 40px;
    height: 40px;
    border: 4px solid #ccc;
    border-top: 4px solid #145c9e;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spinner.active {
    display: block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}


.error {
    color: red;
    font-weight: bold;
}