/* Footer Styles */
.footer {
  background-color: #1a1a1a;
  color: #fff;
  padding: 0;
}

.footer-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 60px;
}

.footer-main {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 80px;
  padding: 60px 0 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Company Info */
.footer-company {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.footer-logo img {
  height: 80px;
  width: auto;
}

.footer-contact {
  font-size: 18px;
  line-height: 1.8;
}

.footer-tel p {
  display: flex;
}

.footer-tel {
  margin-bottom: 15px;
}

.footer-tel p {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 8px 0;
  line-height: 1.4;
}

.footer-tel .tel-label {
  display: inline-block;
  width: 60px;
  text-align: left;
}

.footer-tel a {
  color: #fff;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.footer-tel a:hover {
  opacity: 0.7;
}

.footer-address {
  color: rgba(255, 255, 255, 0.7);
  font-size: 17px;
  line-height: 1.8;
}

/* Footer Navigation */
.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.footer-nav-group {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-nav-title {
  font-size: 20px;
  font-weight: 600;
  color: #fff;
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-nav-list li {
  margin: 0;
  padding: 0;
}

.footer-nav-list a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  font-size: 17px;
  line-height: 1.6;
  transition: all 0.3s ease;
  display: inline-block;
  position: relative;
}

.footer-nav-list a:hover {
  color: #fff;
  padding-left: 5px;
}

/* Footer Bottom */
.footer-bottom {
  padding: 20px 0;
  text-align: center;
}

.footer-copyright {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.5);
  margin: 0;
}

/* Responsive Design */
@media screen and (max-width: 1080px) {
  .footer-inner {
    padding: 0 20px;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 40px 0 30px;
  }

  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

@media screen and (max-width: 767px) {
  .footer-main {
    padding: 30px 0 20px;
  }

  .footer-company {
    gap: 20px;
  }

  .footer-logo img {
    height: 60px;
  }

  .footer-nav {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .footer-nav-title {
    font-size: 18px;
  }

  .footer-nav-list a {
    font-size: 16px;
  }

  .footer-tel p {
    font-size: 18px;
  }

  .footer-address {
    font-size: 16px;
  }
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  width: 50px;
  height: 50px;
  background-color: #00A0E9;
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  z-index: 9999;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(0, 160, 233, 0.3);
}

.back-to-top:hover {
  background-color: #0080c0;
  transform: translateY(-3px);
  box-shadow: 0 4px 15px rgba(0, 160, 233, 0.4);
}

.back-to-top.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top span {
  display: block;
  width: 12px;
  height: 12px;
  border-top: 2px solid #fff;
  border-right: 2px solid #fff;
  transform: rotate(-45deg);
  margin-top: 4px;
}

@media screen and (max-width: 767px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
  }
}