/* ============================================================
   Challenge Circle — footer.css
   ============================================================ */

.site-footer {
    border-top: 1px solid rgba(139,92,246,0.12);
    background: rgba(5,2,10,0.97); /* solid dark — blocks canvas watermark */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: relative;
    z-index: 10; /* above canvas (z-index:0) */
}
.footer-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 64px 24px 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}
@media (max-width: 1024px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px)  { .footer-grid { grid-template-columns: 1fr; gap: 32px; } }

/* Brand column */
.footer-brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    text-decoration: none;
}
.footer-brand-logo-icon {
    width: 36px; height: 36px;
    background: var(--purple);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}
.footer-brand-logo-text {
    font-size: 16px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    color: #fff;
}
.footer-brand-logo-text span { color: var(--purple-light); }
.footer-brand-desc {
    font-size: 13px;
    color: #6b7280;
    line-height: 1.65;
    margin-bottom: 20px;
}
.footer-social {
    display: flex;
    gap: 10px;
}
.footer-social-btn {
    width: 36px; height: 36px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    color: #6b7280;
    font-size: 14px;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
    text-decoration: none;
}
.footer-social-btn:hover {
    color: var(--purple-light);
    border-color: rgba(139,92,246,0.4);
    background: rgba(139,92,246,0.08);
}

/* Link columns */
.footer-col-title {
    font-size: 10px;
    font-weight: 900;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 20px;
}
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-link {
    font-size: 13px;
    color: #9ca3af;
    text-decoration: none;
    cursor: pointer;
    background: none;
    border: none;
    text-align: left;
    padding: 0;
    transition: color 0.2s;
    font-family: var(--font);
}
.footer-link:hover   { color: #fff; }
.footer-link-gold    { color: var(--gold) !important; font-weight: 800; }
.footer-link-gold:hover { color: var(--gold-light) !important; }

/* Bottom bar */
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.footer-copy {
    font-size: 12px;
    color: #4b5563;
}
.footer-credit {
    font-size: 12px;
    color: #4b5563;
}
.footer-credit span { color: var(--purple-light); font-weight: 700; }