/**
 * Base Styles - Shared across all sub-pages
 *
 * Contains: Brand navigation, shared tokens, footer
 * Used by: Economy, Invest, future pages
 */

/* ==========================================================================
   SHARED TOKENS
   ========================================================================== */

:root {
    --color-black-steel: #1c1f2e;
    --color-ember: #d4501e;
    --color-white: #ffffff;
    --color-off-white: #fafaf9;
    --color-muted: #737373;
    --color-border: #e5e5e5;

    --font-serif: 'IBM Plex Serif', Georgia, serif;
    --font-sans: 'IBM Plex Sans', -apple-system, sans-serif;
    --font-brand: 'Playfair Display', Georgia, serif;
}

/* ==========================================================================
   BRAND NAVIGATION (Sub-page header treatment)
   Matches economy site masthead__home-link exactly
   ========================================================================== */

.brand-nav {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--color-muted);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color 150ms ease;
}

.brand-nav:hover {
    color: var(--color-ember);
}

/* ==========================================================================
   SHARED FOOTER
   ========================================================================== */

.site-footer-shared {
    border-top: 3px solid var(--color-black-steel);
    padding: 3rem 1.5rem 2rem;
    background: var(--color-white);
}

.site-footer-shared__container {
    max-width: 1000px;
    margin: 0 auto;
}

.site-footer-shared__nav {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
}

.site-footer-shared__col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.site-footer-shared__heading {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-black-steel);
    margin-bottom: 0.25rem;
}

.site-footer-shared__links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.site-footer-shared__links li {
    list-style: none;
}

.site-footer-shared__links a {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--color-muted);
    text-decoration: none;
}

.site-footer-shared__links a:hover {
    color: var(--color-ember);
}

.site-footer-shared__legal {
    text-align: center;
}

.site-footer-shared__disclaimer {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    color: var(--color-muted);
    max-width: 600px;
    margin: 0 auto 1rem;
    line-height: 1.5;
}

.site-footer-shared__copyright {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    color: var(--color-muted);
}

@media (max-width: 640px) {
    .site-footer-shared__nav {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .site-footer-shared__col {
        align-items: center;
    }
}