/* =============================================================
   ENERGYM — Footer
   ============================================================= */

.site-footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding-top: var(--sp-lg);
  padding-bottom: var(--sp-md);
}

/* ---- Four-column grid ---- */
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.3fr 1fr;
  gap: var(--sp-lg);
  padding-bottom: var(--sp-lg);
  border-bottom: 1px solid var(--clr-border);
}

/* ---- Brand column ---- */
.footer-logo {
  height: 32px;
  width: auto;
  margin-bottom: 1rem;
}
.footer-tagline {
  font-size: 0.87rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
  max-width: 240px;
}

/* ---- Column heading ---- */
.footer-col-title {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-text);
  margin-bottom: 1.2rem;
}

/* ---- Link list ---- */
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.footer-links a {
  font-size: 0.87rem;
  color: var(--clr-text-muted);
  transition: color var(--dur-fast);
}
.footer-links a:hover { color: var(--clr-primary); }

/* ---- Social icon row ---- */
.footer-social-row {
  display: flex;
  gap: 0.75rem;
}
.footer-social-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    border-color var(--dur-fast),
    background   var(--dur-fast);
}
.footer-social-btn:hover {
  border-color: var(--clr-primary);
  background: var(--clr-primary-bg);
}
.footer-social-btn svg {
  width: 15px;
  height: 15px;
  fill: var(--clr-text-muted);
  transition: fill var(--dur-fast);
}
.footer-social-btn:hover svg { fill: var(--clr-primary); }

/* ---- Bottom bar ---- */
.footer-bottom {
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-copyright {
  font-size: 0.76rem;
  color: var(--clr-text-muted);
}
.footer-legal {
  display: flex;
  gap: 1.5rem;
}
.footer-legal a {
  font-size: 0.76rem;
  color: var(--clr-text-muted);
  transition: color var(--dur-fast);
}
.footer-legal a:hover { color: var(--clr-text); }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-md);
  }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}