/* ============================================================
   SAFE — Footer
   ============================================================ */

.footer {
  background:
    radial-gradient(circle at 80% 0%, rgba(34, 211, 238, 0.08), transparent 40%),
    linear-gradient(180deg, var(--brand-900) 0%, #02061f 100%);
  color: var(--text-on-dark);
  padding: clamp(2.5rem, 5vw, 4rem) 0 clamp(1.25rem, 2.5vw, 2rem);
  font-family: var(--font-body);
  position: relative;
  overflow: hidden;
  border-top: 1px solid rgba(34, 211, 238, 0.18);
}

.footer .container {
  width: min(var(--container-xl), calc(100% - 2.5rem));
  margin: 0 auto;
  padding: 0;
  display: grid;
  gap: 0;
}

/* ============================================================
   Top : 4 colonnes de liens
   ============================================================ */
.footer .footer-top {
  display: grid;
  grid-template-columns: repeat(4, minmax(180px, 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
  padding-bottom: clamp(1.75rem, 3vw, 2.5rem);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin: 0;
}

.footer .footer-section {
  padding: 0;
}

.footer .footer-section h4 {
  color: #ffffff;
  margin-bottom: var(--space-md);
  font-size: var(--text-md);
  font-family: var(--font-display);
  font-weight: var(--weight-bold);
  letter-spacing: 0.01em;
}

.footer .footer-section ul {
  display: grid;
  gap: var(--space-sm);
  margin: 0;
  padding: 0;
}

.footer .footer-section ul li {
  list-style: none;
}

.footer .footer-section a {
  color: rgba(228, 237, 249, 0.78);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: var(--weight-regular);
  transition: color var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
  display: inline-block;
}

.footer .footer-section a:hover {
  color: var(--accent-300);
  transform: translateX(2px);
}

/* ============================================================
   Middle : logo + tagline + socials
   ============================================================ */
.footer .footer-middle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-xl);
  padding: clamp(1.25rem, 2.5vw, 2rem) 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer .footer-logo {
  max-width: 380px;
}

.footer .footer-logo .logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: #ffffff;
  font-weight: var(--weight-black);
  font-size: var(--text-xl);
  font-family: var(--font-display);
  letter-spacing: 0.04em;
  text-decoration: none;
}

.footer .footer-logo .logo i {
  color: var(--accent-300);
  font-size: 1.2em;
  filter: drop-shadow(0 4px 12px rgba(34, 211, 238, 0.4));
}

.footer .footer-logo p {
  color: rgba(228, 237, 249, 0.72);
  margin-top: var(--space-xs);
  line-height: var(--leading-relaxed);
  font-size: var(--text-sm);
  max-width: 360px;
}

.footer .footer-social {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.footer .footer-social a {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(228, 237, 249, 0.85);
  font-size: var(--text-md);
  transition: var(--transition-base);
  text-decoration: none;
}

.footer .footer-social a:hover {
  background: var(--accent-500);
  border-color: var(--accent-400);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(6, 182, 212, 0.32);
}

/* ============================================================
   Bottom : copyright + legal links
   ============================================================ */
.footer .footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
  padding: clamp(1rem, 2vw, 1.5rem) 0;
}

.footer .footer-legal p {
  color: rgba(228, 237, 249, 0.6);
  font-size: var(--text-xs);
  margin: 0.15rem 0;
  line-height: var(--leading-snug);
}

.footer .footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
}

.footer .footer-links a {
  color: rgba(228, 237, 249, 0.6);
  text-decoration: none;
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  transition: color var(--duration-fast) var(--ease-out);
}

.footer .footer-links a:hover {
  color: var(--accent-300);
}

/* ============================================================
   Certification line — pleine largeur centrée
   ============================================================ */
.footer .footer-certification {
  padding: clamp(1rem, 2vw, 1.25rem) var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
  background: rgba(255, 255, 255, 0.02);
  border-radius: var(--radius-sm);
  margin-top: var(--space-md);
}

.footer .footer-certification p {
  color: rgba(228, 237, 249, 0.55);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  margin: 0;
  line-height: var(--leading-snug);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1024px) {
  .footer .footer-top {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
  }
}

@media (max-width: 720px) {
  .footer .container {
    width: calc(100% - 2rem);
  }
  .footer .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .footer .footer-middle,
  .footer .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .footer .footer-logo,
  .footer .footer-legal {
    text-align: center;
    width: 100%;
    max-width: 100%;
  }
  .footer .footer-logo .logo {
    justify-content: center;
  }
}