#ruleTabs {
    background: var(--light-bg-color);
    padding: 6px 6px 0 6px;
    gap: 4px;
    border-bottom: none !important;
}

#ruleTabs .nav-link {
    color: var(--subtle-text-color);
    border: none;
    border-radius: 8px 8px 0 0;
    padding: 8px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    position: relative;
    transition: color 0.25s ease, background 0.25s ease;
    background: transparent;
}

#ruleTabs .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%;
    height: 2px;
    background: #0d6efd;
    border-radius: 2px 2px 0 0;
    transition: none;
}

#ruleTabs .nav-link:hover {
    color: var(--text-color);
    background: var(--card-bg-color);
}

#ruleTabs .nav-link:hover::after {
    transform: translateX(-50%) scaleX(0.5);
}

#ruleTabs .nav-link.active {
    color: #0d6efd;
    background: var(--card-bg-color);
    border-bottom: 2px solid #0d6efd;
    font-weight: 700;
}

#ruleTabs .nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

#ruleTabs .nav-link i {
    font-size: 11px;
    margin-right: 5px;
    opacity: 0.8;
}

#ruleTabsContent {
    border-top: 2px solid var(--border-color);
    background-color: var(--bg-color);
}

#ruleTabsContent .tab-pane {
    background-color: var(--code-bg-color);
}

#ruleTabsContent .tab-pane.fade {
    transition: opacity 0.05s ease;
}

#ruleTabsContent .tab-pane.fade:not(.show) {
    opacity: 0;
    background-color: var(--code-bg-color);
}

.custom-pre {
    background-color: var(--bg-color) !important;
    margin: 0;
}