/* Hide mermaid content until processed */
div.mermaid:not([data-processed="true"]) {
    color: transparent !important;
    position: relative;
    min-height: 2em;
}

/* Show spinner while processing */
div.mermaid:not([data-processed="true"])::after {
    content: '';
    display: block;
    position: absolute;
    left: 50%;
    top: 50%;
    width: 2em;
    height: 2em;
    margin-left: -1em;
    margin-top: -1em;
    border: 0.3em solid #ccc;
    border-top: 0.3em solid #0078d7;
    border-radius: 50%;
    animation: mermaid-spin 1s linear infinite;
    z-index: 2;
}

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

div.mermaid {
    overflow-x: auto;
    width: 100%;
    max-width: 100vw;
}
div.mermaid > svg {
    height: auto;
    max-width: none;
    display: block;
}

/* Random Page Button Styling */
#random-page, .random-page {
    background: linear-gradient(45deg, #673ab7, #9c27b0) !important;
    color: white !important;
    border: none !important;
    padding: 12px 24px !important;
    font-size: 16px !important;
    font-weight: 600 !important;
    border-radius: 8px !important;
    cursor: pointer !important;
    margin: 10px 0 !important;
    transition: all 0.3s ease !important;
    box-shadow: 0 2px 8px rgba(103, 58, 183, 0.3) !important;
    text-decoration: none !important;
    display: inline-block !important;
}

#random-page:hover, .random-page:hover {
    background: linear-gradient(45deg, #5e35b1, #8e24aa) !important;
    box-shadow: 0 4px 12px rgba(103, 58, 183, 0.4) !important;
    transform: translateY(-2px) !important;
}

#random-page:active, .random-page:active {
    transform: translateY(0) !important;
}