/* =========================================================
   6. SITE FOOTER
   ========================================================= */
.site-footer {
    padding: 64px 0 32px;
    background: var(--bg-alt);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    transition:
        background var(--anim-med) var(--ease-smooth),
        color var(--anim-med) var(--ease-smooth),
        border-color var(--anim-med) var(--ease-smooth);
}

/* ============================
   TOP: BRAND + NAV
   ============================ */
.footer-top {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 64px;
    margin-bottom: 48px;
}

/* Brand column */
.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text, #ffffff);
    font-size: 1rem;
    font-weight: 700;
    width: fit-content;
}

.footer-logo:visited,
.footer-logo:active {
    color: var(--text, #ffffff);
}

.footer-tagline {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-desc {
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin: 0;
}

/* Social icons */
.footer-social {
    display: flex;
    gap: 10px;
    margin-top: 4px;
}

.footer-social-link {
    width: 34px;
    height: 34px;
    min-width: 34px;
    min-height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: 6px;
    text-decoration: none;
    transition: color 0.2s ease,
                background 0.2s ease,
                border-color 0.2s ease;
}

.footer-social-link:hover {
    color: var(--accent);
    background: rgba(77, 163, 255, 0.08);
    border-color: rgba(77, 163, 255, 0.25);
}

.footer-social-link svg {
    width: 15px;
    height: 15px;
    min-width: 15px;
    min-height: 15px;
    max-width: 15px;
    max-height: 15px;
    display: block;
    flex-shrink: 0;
}

/* Nav columns */
.footer-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 0;               /* overrides old centered nav styles */
    justify-content: unset;
}

.footer-nav-heading {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text, #ffffff);
    margin: 0 0 14px;
}

.footer-nav-col ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.footer-nav-col ul li a {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-nav-col ul li a:hover {
    color: var(--text, #ffffff);
}

.footer-nav-col ul li a:visited {
    color: var(--text-muted);
}

/* ============================
   DIVIDER
   ============================ */
.footer-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.05);
    margin-bottom: 24px;
}

/* ============================
   BOTTOM: COPYRIGHT + LEGAL
   ============================ */
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.footer-copyright {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.7;
    margin: 0;
}

.footer-legal {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-legal a {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.7;
    text-decoration: none;
    transition: opacity 0.2s ease, color 0.2s ease;
}

.footer-legal a:hover {
    opacity: 1;
    color: var(--text, #ffffff);
}

.footer-legal a:visited {
    color: var(--text-muted);
}

/* Risk disclaimer */
.footer-risk {
    font-size: 0.72rem;
    color: var(--text-muted);
    opacity: 0.45;
    line-height: 1.7;
    margin: 0;
    max-width: 800px;
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 900px) {
    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-nav {
        grid-template-columns: repeat(2, 1fr);
        gap: 28px;
    }
}

@media (max-width: 600px) {
    .site-footer {
        padding: 48px 0 28px;
    }

    .footer-nav {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .footer-legal {
        gap: 14px;
    }
}