.tab-active {
    border-bottom: 2px solid #3b82f6;
    color: #3b82f6;
    font-weight: 600;
}
.htmx-indicator { display: none; }
.htmx-request .htmx-indicator { display: inline; }
.success-flash {
    animation: fadeout 2s forwards;
    animation-delay: 1s;
}
@keyframes fadeout { to { opacity: 0; } }
textarea.latex-editor {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
}