/* ============================================================
   SmartStack — footer.css
   Footer CTA dark + colonnes + copyright + mini mockup
   ============================================================ */

.footer {
  background: var(--color-navy);
  color: var(--color-white);
  margin-top: var(--space-4xl);
}

/* ─── Footer bottom ─── */

.footer__bottom {
  max-width: 1120px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg) var(--space-2xl);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  position: relative;
}

/* Séparateur gradient bleu */
.footer__bottom::before {
  content: "";
  position: absolute;
  top: 0;
  left: var(--space-lg);
  right: var(--space-lg);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(37, 99, 235, 0.35) 25%,
    rgba(59, 130, 246, 0.55) 50%,
    rgba(37, 99, 235, 0.35) 75%,
    transparent
  );
}

/* ─── Brand column ─── */

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__brand-logo {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.footer__brand-icon {
  height: 40px;
  width: auto;
  opacity: 1;
  margin-right: 0.375rem;
}

.footer__brand-smart {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--color-white);
}

.footer__brand-stack {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--color-blue-light);
}

.footer__tagline {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
  line-height: 1.6;
  max-width: 33ch;
}

.footer__brand-socials {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-top: var(--space-sm);
}

.footer__social-title {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.3);
}

.footer__social-row {
  display: flex;
  gap: var(--space-xs);
}

.footer__social {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  color: rgba(255, 255, 255, 0.4);
  transition:
    background-color var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

.footer__social:hover {
  background: rgba(37, 99, 235, 0.15);
  border-color: rgba(59, 130, 246, 0.4);
  color: var(--color-blue-light);
  transform: translateY(-2px);
}

.footer__social svg {
  width: 15px;
  height: 15px;
}

/* ─── Link columns ─── */

.footer__links-title {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.28);
  margin-bottom: var(--space-lg);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
  transition:
    color var(--transition-fast),
    padding-left var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-white);
  padding-left: 5px;
}

/* ─── Contact column ─── */

.footer__contact-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer__contact-item svg {
  width: 14px;
  height: 14px;
  color: var(--color-blue-light);
  flex-shrink: 0;
  opacity: 0.75;
}

.footer__contact-item a {
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition-fast);
}

.footer__contact-item a:hover {
  color: var(--color-white);
}

/* ─── Copyright bar ─── */

.footer__copy {
  max-width: 1120px;
  margin: 0 auto;
  padding: var(--space-lg) var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.22);
}

.footer__copy-dot {
  color: rgba(255, 255, 255, 0.12);
}

.footer__copy-link {
  color: rgba(255, 255, 255, 0.22);
  transition: color var(--transition-fast);
}

.footer__copy-link:hover {
  color: rgba(255, 255, 255, 0.5);
}

/* ─── Responsive : tablet (768px+) ─── */
@media (min-width: 768px) {
  .footer__bottom {
    grid-template-columns: 1fr 1fr;
  }
}

/* ─── Responsive : desktop (1024px+) ─── */
@media (min-width: 1024px) {
  .footer__bottom {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-2xl);
    padding: var(--space-3xl) var(--space-lg) var(--space-2xl);
  }
}