html {
  font-size: calc(0.9rem + 0.1vw);
}

body {
  font-family: "Open Sans", sans-serif;
  padding-top: 90px;
  text-align: justify;
}

form {
  max-width: 500px;
  margin: 0 auto;
}

#footer {
  height: 80px;
  position: relative;
  bottom: 0;
  width: 100%;
}

button {
  color: #777;
  background: #fff;
  padding: 4px 12px 4px 12px;
  border: solid #777 2px;
  transition: all 0.3s ease-in-out;
  text-decoration: none;
}
button:hover {
  color: #000;
  border: solid #000 2px;
  text-decoration: none;
}

input, textarea {
  font-size: 0.8rem;
  border: 1px solid #ddd;
  background: #fff;
  padding: 0.5rem 0.7rem;
  margin: 5px 0;
  transition: all 0.3s ease-in-out;
  width: 100%;
}

input:focus, textarea:focus {
  border-color: #777;
  outline: none;
}

.portfolio-content {
  line-height: 2;
  color: #555;
}
.portfolio-content a {
  color: #777;
  text-decoration: none;
}
.portfolio-content a:hover {
  color: #000;
  text-decoration: none;
}

h1, h2, h3 {
  font-family: "Crimson Text", "Noto Serif TC", sans-serif;
  letter-spacing: 1px;
  font-weight: 300;
  margin-bottom: 0.5rem;
}

.navbar-light a.navbar-brand {
  color: #fff;
  background-color: #000;
  width: fit-content;
}
.navbar-light a.navbar-brand:hover {
  color: #fff;
}

.navbar-brand {
  font-weight: 800;
  font-size: calc(0.85rem + 0.2vw);
  letter-spacing: 0.5px;
  font-family: "Open Sans", sans-serif;
}

.navbar {
  text-transform: uppercase;
  -webkit-backdrop-filter: blur(7px);
  backdrop-filter: blur(7px);
  background-color: rgba(255, 255, 255, 0.7);
}
.navbar button {
  padding: 0px 0px 0px 0px;
}

.navbar-toggler {
  border: 0;
}

.navbar-toggler-right {
  right: 0rem;
}

.project-img {
  width: 100%;
  max-width: 500px;
  display: block;
  object-fit: cover;
}

.project-img-inpage {
  width: 100%;
  max-width: 900px;
  display: block;
  object-fit: cover;
}

/* Image Hover Effect */
.img-fluid.portfolio-img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.hovereffect {
  width: 100%;
  height: 18rem;
  float: left;
  overflow: hidden;
  position: relative;
  text-align: center;
  filter: grayscale(1);
  -webkit-filter: grayscale(1);
}
.hovereffect img {
  display: block;
  position: relative;
  max-width: none;
  width: 100%;
  height: 100%;
  -webkit-transition: opacity 0.35s, -webkit-transform 0.35s;
  transition: opacity 0.35s, transform 0.35s;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  opacity: 0.4;
  transform: scale(1.05);
  filter: blur(1.3px);
}
.hovereffect .overlay {
  width: 100%;
  height: 100%;
  position: absolute;
  overflow: hidden;
  top: 0;
  left: 0;
}
.hovereffect .overlay-text {
  color: #000;
  left: 50%;
  position: absolute;
  top: 50%;
  width: 100%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  opacity: 1;
  filter: alpha(opacity=0);
  -webkit-transition: opacity 0.35s, -webkit-transform 0.35s;
  transition: opacity 0.35s, transform 0.35s;
}
.hovereffect .overlay-text .en {
  letter-spacing: 0.2rem;
  font-family: "Open Sans", sans-serif;
  font-weight: 300;
}
.hovereffect .overlay-text .zh {
  letter-spacing: 0.8rem;
  font-family: "Open Sans", sans-serif;
  font-weight: 300;
}

/* any-hover */
@media (any-hover: hover) {
  .hovereffect:hover img {
    opacity: 1;
    transform: scale(1);
    filter: blur(0px);
  }
  .hovereffect:hover .overlay-text {
    opacity: 0;
    filter: alpha(opacity=100);
  }
  .hovereffect .overlay-text {
    font-size: calc(1rem + 0.5vw);
  }
}
@media (any-hover: none) {
  .hovereffect:active img {
    opacity: 1;
    transform: scale(1);
    filter: blur(0px);
  }
  .hovereffect:active .overlay-text {
    opacity: 0;
    filter: alpha(opacity=100);
  }
  .hovereffect .overlay-text {
    font-size: calc(1rem + 0.7vw);
  }
}
.page-nav {
  width: 50%;
  margin: 0 auto;
  text-align: center;
}
.page-nav a {
  font-size: 1.3rem;
  font-family: "Crimson Text", sans-serif;
  font-weight: 300;
  margin: 0 10px;
  color: #000;
}

span {
  font-size: 1.3rem;
  font-family: "Crimson Text", sans-serif;
  font-weight: 300;
  margin: 0 10px;
  color: #000;
}

.animate__animated.animate__fadeIn {
  --animate-duration: 1000ms;
}

.about-img {
  width: 100%;
  max-width: 250px;
}

.footer-copyright {
  font-family: "Open Sans", sans-serif;
  font-weight: 300;
  font-size: 0.9rem;
  letter-spacing: 0.6px;
  color: #777;
}

.video-container {
  position: relative;
  padding-bottom: 56.25%;
  padding-top: 30px;
  height: 0;
  overflow: hidden;
}
.video-container iframe, .video-container object, .video-container embed {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.wrong-page {
  text-align: center;
  font-family: "Crimson Text", sans-serif;
  font-weight: 300;
  font-size: 6rem;
  color: #777;
}
.wrong-page a {
  font-size: 1.2rem;
  text-decoration: none;
  color: #777;
  -webkit-transition: color 0.35s, -webkit-transform 0.35s;
  transition: color 0.35s, transform 0.35s;
  border: solid;
  border-width: 0.15rem;
}
@media (any-hover: hover) {
  .wrong-page a:hover {
    color: #000;
  }
}
@media (any-hover: none) {
  .wrong-page a:active {
    color: #000;
  }
}

.home-brand {
  text-align: center;
  line-height: 40rem;
  font-family: "Open Sans", sans-serif;
  font-size: calc(1.5rem + 2.5vw);
  font-weight: 700;
  letter-spacing: 0.5px;
  height: 40rem;
  background-image: url("../images/cover.jpg");
  background-size: cover;
  background-position: center;
  max-width: 100%;
}
.home-brand a {
  color: #fff;
  text-decoration: none;
  text-shadow: black 0.1em 0.1em 0.3em;
}

.home-menu {
  text-align: center;
  font-family: "Open Sans", sans-serif;
  font-size: calc(0.7rem + 0.3vw);
  font-weight: 300;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}
.home-menu a {
  color: #888;
  background-color: #fff;
  text-decoration: none;
  -webkit-transition: color 0.35s, -webkit-transform 0.35s;
  transition: color 0.35s, transform 0.35s;
}
@media (any-hover: hover) {
  .home-menu a:hover {
    color: #333;
  }
}
@media (any-hover: none) {
  .home-menu a:active {
    color: #333;
  }
}

.home-img {
  padding-right: 0px;
  padding-left: 0px;
}

/*any-hover*/
@media (any-hover: hover) {
  .footer,
  .push {
    height: 50px;
  }
  .nav-item {
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 1.5px;
    font-family: "Open Sans", sans-serif;
  }
  .nav-item a {
    -webkit-transition: color 0.35s, -webkit-transform 0.35s;
    transition: color 0.35s, transform 0.35s;
    color: #333;
  }
  .nav-item a:hover {
    color: #000;
  }
}
@media (any-hover: none) {
  .footer,
  .push {
    height: 100px;
  }
  .nav-item {
    font-size: calc(0.85rem + 0.2vw);
    font-weight: 300;
    letter-spacing: 1.5px;
    font-family: "Open Sans", sans-serif;
  }
  .nav-item a {
    -webkit-transition: color 0.35s, -webkit-transform 0.35s;
    transition: color 0.35s, transform 0.35s;
    color: #333;
  }
  .nav-item a:active {
    color: #000;
  }
}