html, body {
    height: 100%;
    margin: 0;
}

.center-wrapper {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.button-wrapper {
    position: relative;
    width: 100%;
    padding-top: 100%; /* Makes it square */
    cursor: pointer;
}

.blur-button {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    border-radius: 15px;
    background-size: cover;
    background-position: center;
    filter: blur(5px);
    transition: filter 0.3s ease;
}

#btn-mri {
    background-image: url("/assets/MRI_button.jpg");
}

#btn-he {
    background-image: url("/assets/HE_button.jpg");
}

#btn-gen {
    background-image: url("/assets/GE_button.jpg");
}

#btn-lacun {
    background-image: url("/assets/lacun_button.jpg");
}

#btn-custom {
    background-image: url("/assets/custom_button.jpg");
}

.button-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 2rem;
    font-weight: bold;
    z-index: 1;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.7);
    pointer-events: none;
    text-align: center;
}

.button-wrapper:hover .blur-button {
    filter: blur(2px);
    box-shadow: 0 0 15px rgba(0,0,0,0.3);
}

.image-container {
    position: relative;
    justify-content: center;
    text-align: center;
    align-items: center;
    width: 100%;
    height: 100%;
    padding: 0;
}
.image-container > * {
    position: absolute;
    width: 100%;
    height: 100%;
}

.throbber {
    display: flex;
    justify-content: center;
    align-items: center;
}

.loader {
          border: 16px solid #f3f3f3;
          border-radius: 50%;
          border-top: 16px solid #3498db;
          width: 10rem;
          height: 10rem;
          -webkit-animation: spin 2s linear infinite; /* Safari */
          animation: spin 2s linear infinite;
        }

@-webkit-keyframes spin {
          0% { -webkit-transform: rotate(0deg); }
          100% { -webkit-transform: rotate(360deg); }
        }

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}