/* ═══════════════════════════════════════════════
   KOI-AI — footer.css
   Optimized Footer Styles for PC & Mobile
═══════════════════════════════════════════════ */

footer {
  /*background: aliceblue;*/
  background: #FBFBFD;
  color: #111;
  padding: 40px 0;
}

.footer-container {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  gap: 100px;
}

/* ── Footer Left ── */
.ft-left {
  flex: 1;
  max-width: 500px;
}

.footer-logo {
  margin-bottom: 30px;
}

.footer-logo img {
  height: 28px;
}

.ft-info {
  font-size: 0.9rem;
  line-height: 1.8;
}

.ft-info p {
  margin-bottom: 8px;
}

.ft-info .company-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 15px;
}

.ft-info a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

.ft-info a:hover {
  color: #42c5b6;
}

.ft-info .copyright {
  margin-top: 30px;
  font-size: 0.8rem;
}

/* ── Footer Right ── */
.ft-right {
  flex: 1;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.nav-col {
  list-style: none;
  padding: 0;
}

.nav-col .dep_1 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  position: relative;
}

.nav-col li {
  margin-bottom: 10px;
}

.nav-col li:not(.dep_1) a {
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.3s ease;
}

.nav-col li a:hover {
  color: #42c5b6;
  padding-left: 5px;
}

/* ── Responsive ── */
@media (max-width: 1200px) {
  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}

@media (max-width: 900px) {
  footer {
    padding: 60px 0 40px;
  }

  .footer-container {
    flex-direction: column;
    gap: 50px;
    padding: 0 24px;
  }

  .ft-left {
    max-width: 100%;
  }

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

@media (max-width: 480px) {
  .ft-info {
    font-size: 0.85rem;
  }
}