/**
 * Section Numbering Styles
 * For headings with automatic hierarchical numbering (1, 1.1, 1.2, etc.)
 */

.heading-block {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

/* Add more spacing for main sections */
.heading-block h2,
h2.heading-block {
    margin-top: 3rem;
}

/* Section numbers */
.section-number {
    display: inline-block;
    margin-right: 0.75rem;
    color: var(--color-link);
    font-weight: 700;
    /* Add minimum width to align multi-digit numbers */
    min-width: 2ch;
}

/* Numbered headings have consistent spacing */
.numbered-heading {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

/* Ensure section number doesn't wrap */
.numbered-heading .section-number {
    flex-shrink: 0;
}

/* Different sizes for different heading levels */
h2.heading-block,
.heading-block h2 {
    font-size: 2rem;
}

h3.heading-block,
.heading-block h3 {
    font-size: 1.5rem;
}

h4.heading-block,
.heading-block h4 {
    font-size: 1.25rem;
}

h5.heading-block,
.heading-block h5 {
    font-size: 1.1rem;
}

h6.heading-block,
.heading-block h6 {
    font-size: 1rem;
}

/* Heading hover state for headings with IDs (cross-referenceable) */
.heading-block[id]:hover::before {
    content: "#";
    position: absolute;
    left: -1.5rem;
    color: var(--color-link);
    opacity: 0.5;
    font-weight: normal;
}

.heading-block[id] {
    position: relative;
}

/* Focus styles for keyboard navigation (when jumping to section) */
.heading-block[id]:target {
    animation: highlight-section 2s ease-in-out;
}

@keyframes highlight-section {
    0%, 100% {
        background-color: transparent;
    }
    10%, 90% {
        background-color: var(--bg-elevated);
        outline: 2px solid var(--color-link);
        outline-offset: 0.5rem;
    }
}

/* Print styles - ensure section numbers are visible */
@media print {
    .section-number {
        color: #000;
    }

    .heading-block {
        page-break-after: avoid;
    }

    /* Don't show hover indicators in print */
    .heading-block[id]:hover::before {
        display: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .section-number {
        font-weight: 900;
        text-decoration: underline;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .heading-block {
        color: var(--text-primary);
    }

    .section-number {
        color: var(--color-link);
    }

    .heading-block[id]:target {
        background-color: var(--color-link-hover-bg);
    }
}

[data-theme="dark"] .heading-block {
    color: var(--text-primary);
}

[data-theme="dark"] .section-number {
    color: var(--color-link);
}

[data-theme="dark"] .heading-block[id]:target {
    background-color: var(--color-link-hover-bg);
}

/* Responsive design - smaller section numbers on mobile */
@media (max-width: 768px) {
    .section-number {
        margin-right: 0.5rem;
    }

    h2.heading-block,
    .heading-block h2 {
        font-size: 1.75rem;
    }

    h3.heading-block,
    .heading-block h3 {
        font-size: 1.35rem;
    }

    h4.heading-block,
    .heading-block h4 {
        font-size: 1.15rem;
    }
}