/*====================================
# nav
==================================== */
.main-nav {
  background: rgba(35, 74, 255, 0.4);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(35, 74, 255, 0.5);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  padding: 1rem 4rem;
  border-radius: 0 0 25px 25px;
}

.main-nav .navbar-nav .nav-link {
  color: #ffffff;
  padding: 0 0.8rem;
  transition: all 0.3s ease-in-out;
}

.navbar-light .navbar-nav .nav-link:hover {
  color: var(--light);
}

.navbar-light .navbar-toggler {
  border: none;
}

.btn-signup {
  background-color: var(--light);
  padding: 8px 25px;
  border-radius: 25px;
  color: #212121;
  transition: all 0.3s;
}

.btn-signup:hover {
  background-color: var(--C2);
  text-decoration: none;
  transform: scale(110%);
}

.btn-signup-mobile {
  opacity: 1;
  visibility: visible;
  transition-property: opacity, visibility;
  transition-duration: .5s;
  transition-timing-function: ease;
  transition-delay: .5ms;
}

.btn-signup-desktop {
  display: none;
}


@media (min-width: 992px) {
  .navbar-nav {
    text-align: center;
  }

  .btn-signup-mobile {
    opacity: 0;
    visibility: hidden;
    transition-property: opacity, visibility;
    transition-duration: 0.1ms;
  }

  .btn-signup-desktop {
    display: block;
  }
}

@media (max-width:992px) {
  .main-nav {
    position: fixed;
    width: 100%;
    padding: 1rem 1.2rem;
    z-index: 100;
  }

  .main-nav .navbar-nav {
    width: 100%;
    height: 100vh;
    text-align: center;
  }

  .main-nav .navbar-nav .nav-link {
    padding: 1rem;
  }
}

@media (max-width:576px) {
  .navbar-brand img {
    width: 150px;
  }

  .btn-signup {
    padding: 5px 10px;
  }
}

/*====================================
# openbtn 小版按鈕
==================================== */
.openbtn {
  position: relative;
  cursor: pointer;
  width: 50px;
  height: 50px;
  border-radius: 5px;
}

/*======= 按鈕內側 =======*/
.openbtn span {
  display: inline-block;
  transition: all .4s;
  position: absolute;
  left: 14px;
  height: 3px;
  border-radius: 2px;
  background: var(--light);
  width: 45%;
}

.openbtn span:nth-of-type(1) {
  top: 15px;
}

.openbtn span:nth-of-type(2) {
  top: 23px;
}

.openbtn span:nth-of-type(3) {
  top: 31px;
}

/*======= active 線動作 =======*/

.openbtn.active span:nth-of-type(1),
.openbtn.active span:nth-of-type(3) {
  top: 23px;
}