/* Custom styles for cross-site navigation and branding */

@import url('https://fonts.googleapis.com/css?family=Inter:400,500,700');

/* ============================================================
 * FourM font override
 *
 * Inter, chosen 2026-08-04 after live comparison against
 * Documenter's native default (Lato), Roboto, and Raleway (used
 * on the Franklin main site) -- pairs well with Raleway there.
 *
 * Scoped to body/UI text only -- deliberately does NOT touch:
 *   - .is-family-monospace / .is-family-code (JuliaMono stack)
 *     -- changing this would make code unreadable/misaligned.
 *   - MathJax-rendered math (mjx-container etc.) -- MathJax3
 *     renders its own fonts independent of page CSS, and
 *     Documenter's headings don't set their own font-family
 *     (they inherit from body), so this one override is
 *     sufficient without a separate heading rule.
 * ============================================================ */
body, button, input, optgroup, select, textarea {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", "Helvetica", "Arial", sans-serif;
}

/* Site navigation footer styling */
.site-navigation {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: var(--documenter-dark-background, #f8f9fa);
    border-radius: 8px;
    border: 1px solid var(--documenter-dark-border, #e9ecef);
}

.site-navigation .nav-section {
    margin-bottom: 1rem;
}

.site-navigation .nav-section:last-child {
    margin-bottom: 0;
}

.site-navigation h4 {
    margin: 0 0 0.75rem 0;
    color: var(--documenter-dark-text, #212529);
    font-size: 1rem;
    font-weight: 600;
}

.site-navigation ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.site-navigation ul li {
    margin: 0.25rem 0;
}

.site-navigation ul li a {
    color: var(--documenter-dark-link, #007bff);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.site-navigation ul li a:hover {
    color: var(--documenter-dark-link-hover, #0056b3);
    text-decoration: underline;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .site-navigation {
        background-color: #2b2b2b;
        border-color: #404040;
    }

    .site-navigation h4 {
        color: #ffffff;
    }

    .site-navigation ul li a {
        color: #58a6ff;
    }

    .site-navigation ul li a:hover {
        color: #79c0ff;
    }
}

/* Responsive design */
@media (max-width: 768px) {
    .site-navigation {
        padding: 1rem;
    }

    .site-navigation h4 {
        font-size: 0.9rem;
    }

    .site-navigation ul li a {
        font-size: 0.85rem;
    }
}

/* Integration with Documenter.jl theme */
html[data-theme="dark"] .site-navigation {
    background-color: var(--documenter-dark-background);
    border-color: var(--documenter-dark-border);
}

html[data-theme="dark"] .site-navigation h4 {
    color: var(--documenter-dark-text);
}

html[data-theme="dark"] .site-navigation ul li a {
    color: var(--documenter-dark-link);
}

html[data-theme="dark"] .site-navigation ul li a:hover {
    color: var(--documenter-dark-link-hover);
}

/* ============================================================
 * FourM muted color palette override
 *
 * Documenter's default light theme's global link color
 * (a{color:#2e63b8}) is a saturated blue that reads as "neon"
 * against the site's grays. Replaces it with the same muted
 * blue-gray family chosen for the Franklin main site's sidebar
 * (see math_tech_study/_css/documenter-theme-alignment.css and
 * desktop-sidebar.css) for whole-domain visual consistency.
 *
 * Scope is intentionally narrow: Documenter's headings, sidebar
 * active-state, and docstring badges are already muted in the
 * shipped theme and don't need touching -- only the base anchor
 * color (and the two other selectors below that reuse it) do.
 * ============================================================ */
a {
    color: #4a6b85;
}

a:hover {
    color: #2c3e50;
}

.outdated-warning-overlay a {
    color: #4a6b85;
}

#documenter .docs-sidebar form.docs-search > input.is-active {
    border-color: #4a6b85;
    box-shadow: 0 0 0 0.125em rgba(74, 107, 133, 0.25);
}

details.docstring > summary::before {
    color: #4a6b85;
}

.content a code {
    color: #4a6b85;
}