style.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Montserrat', sans-serif;
  text-decoration: none;
  list-style: none;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  max-width: 100vw;
  min-height: 100vh;
  background-image: url(./img/bgc0.jpg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
}

.head {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 1.25rem 6.25rem;
}

.head-logo {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  padding: 1.25rem 6.25rem;
  font-size: 3em;
  line-height: 2.3;
  text-shadow: 1px 1px 10px rgba(216, 27, 200, 0.502);
  color: rgb(85, 26, 139);
}

.navigation {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  padding: 2.813rem 6.25rem;
}

.navigation > li {
  margin-left: 1.875rem;
}

.navigation li a {
  border-radius: 1.25rem;
  padding: 0.375rem 1rem;
  font-size: 1.375em;
  font-weight: 600;
  color: rgb(255, 255, 255);
}

.navigation > li a:hover,
.navigation > li a.active {
  background-color: rgb(255, 255, 255);
  color: rgb(0, 0, 0);
}

.main {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100vh;
}

.main > img {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  pointer-events: none;
}

.stars {
  z-index: 0;
  transform: translateY(0.625rem);
}

.base {
  z-index: 3;
  mix-blend-mode: luminosity;
}

.mountain-left,
.mountain-right {
  z-index: 2;
}

.moon {
  z-index: 1;
  opacity: 0.8;
  transform: translateY(12.5rem);
  mix-blend-mode: screen;
}

.crystal2,
.crystal1,
.usagi {
  z-index: 3;
}

.planet1,
.planet2 {
  z-index: 1;
  opacity: 0.8;
  mix-blend-mode: exclusion;
}

.usagi {
  transform: translateY(1.875rem);
  mix-blend-mode: darken;
  -webkit-filter: drop-shadow(5px -10px 6px rgb(172, 99, 184));
  filter: drop-shadow(5px -10px 6px rgb(172, 99, 184));
}

.main::before,
.about::before,
.blog::before,
.contact::before,
.blog::after,
.contact::after,
.footer::after {
  content: '';
  position: absolute;
  z-index: 100;
  bottom: 0;
  width: 100%;
  height: 7.5rem;
  background-image: linear-gradient(
    360deg,
    rgba(10, 0, 25, 1) 0%,
    rgba(10, 0, 25, 1) 30%,
    rgba(59, 27, 107, 0) 100%
  );
}

.about::before,
.blog::before,
.contact::before {
  bottom: -6.25rem;
  left: 0;
  background-image: linear-gradient(
    180deg,
    rgba(10, 0, 25, 1) 0%,
    rgba(10, 0, 25, 1) 30%,
    rgba(59, 27, 107, 0) 100%
  );
}

.blog::after,
.contact::after,
.footer::after {
  top: -6.25rem;
  left: 0;
}

.about,
.blog,
.contact,
.footer {
  position: relative;
  z-index: 10;
  padding: 6.25rem;
  background-color: rgb(10, 0, 25);
}

h2 {
  margin-bottom: 1.25rem;
  font-size: 3rem;
  letter-spacing: 0.313rem;
  text-shadow: 1px 1px 5px rgb(216, 27, 200);
  color: rgb(255, 255, 255);
}

p {
  font-size: 1rem;
  font-weight: 300;
  text-align: justify;
  line-height: 1.5;
  text-indent: 3.125rem;
  color: rgb(255, 255, 255);
}

.container-bg {
  margin: 0 auto;
  height: 50vh;
}

.bg {
  width: 100%;
  height: 80vh;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
}

.first {
  background-image: url('./img/bgc1.jpg');
}

.second {
  background-image: url('./img/bgc2.jpg');
}

.third {
  background-image: url('./img/bgc3.jpg');
}

.cards {
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  margin-top: 5rem;
  width: 100%;
}

.card {
  opacity: 0.5;
  border: 2px solid #d140e7;
  border-radius: 0.938rem;
  width: 18.75rem;
  height: 26.563rem;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  cursor: pointer;
}

.card:hover {
  opacity: 1;
}

.img1 {
  background-image: url('./img/card-img1.jpg');
}
.img2 {
  background-image: url('./img/card-img2.jpg');
}
.img3 {
  background-image: url('./img/card-img3.jpg');
}

.contact {
  min-height: 50vh;
}

.contact-card {
  margin: 3.125rem auto 0;
  box-shadow: -0.6rem 0.6rem 0 rgb(172, 99, 184);
  border: 1px solid rgb(0, 0, 0);
  border-radius: 0.625rem;
  max-width: 37.5rem;
  background-color: rgb(255, 255, 255);
}

.contact-form {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  padding: 1.25rem;
}

.contact-header {
  border-bottom: 1px solid rgb(0, 0, 0);
  padding: 0.5rem;
  font-size: 1.25rem;
  text-align: center;
}

input,
textarea {
  width: 80%;
}

input,
button,
textarea {
  border: 2px solid rgba(0, 0, 0, 0.6);
  border-radius: 0.625rem;
  background-image: none;
  background-color: rgb(218, 218, 211);
  box-shadow: none;
  padding: 0.313rem;
}

input:focus,
button:focus,
textarea:focus {
  outline: none;
}

input:hover,
textarea:hover {
  border: 2px solid rgb(85, 26, 139);
}

textarea {
  margin-top: 0.625rem;
  min-height: 12.5rem;
  resize: vertical;
}

button {
  align-self: flex-end;
  margin-top: 0.625rem;
  margin-right: 10%;
  cursor: pointer;
  font-weight: 500;
}

button:hover {
  background-color: rgb(209, 64, 231);
  color: rgb(255, 255, 255);
}

.container-bg > .third {
  position: relative;
  z-index: 0;
}

.background-glass {
  position: absolute;
  z-index: 0;
  top: 50%;
  left: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  transform: translate(-50%, -50%);
  transition: 0.5s ease;
  width: 60vw;
  height: 25vh;
  box-shadow: 0 0.3px 0.7px rgba(0, 0, 0, 0.126),
    0 0.9px 1.7px rgba(0, 0, 0, 0.179), 0 1.8px 3.5px rgba(0, 0, 0, 0.224),
    0 3.7px 7.3px rgba(0, 0, 0, 0.277), 0 10px 20px rgba(0, 0, 0, 0.4);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.background-glass:hover {
  box-shadow: 0 0.7px 1px rgba(0, 0, 0, 0.157),
    0 1.7px 2.6px rgba(0, 0, 0, 0.224), 0 3.5px 5.3px rgba(0, 0, 0, 0.28),
    0 7.3px 11px rgba(0, 0, 0, 0.346), 0 20px 30px rgba(0, 0, 0, 0.5);
}

.glass-title {
  padding-left: 0.375rem;
  font-size: 3.6rem;
  font-weight: 400;
  text-align: center;
  letter-spacing: 1.5rem;
  color: rgb(255, 255, 255);
  text-shadow: 1px 1px 10px rgba(216, 27, 200, 0.5);
}

.footer {
  top: 17.5rem;
  left: 0;
  display: flex;
  flex-direction: column;
  text-align: center;
  justify-content: center;
  padding: 3.125rem;
}

.footer-socials {
  bottom: 0;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  transition: 0.5s linear;
  margin: 1.875rem auto;
  width: 30%;
}

.btn-social {
  font-size: 1.875rem;
  color: rgb(209, 64, 231);
}

.btn-social:hover {
  transform: translateY(-0.313rem);
  color: rgb(255, 190, 190);
}

.copyright {
  opacity: 0.5;
  text-align: center;
  letter-spacing: 0.313rem;
  text-indent: 0;
}

.github:hover {
  color: rgb(172, 99, 184);
}

.scroll-up {
  position: fixed;
  z-index: 20;
  bottom: 1.875rem;
  right: 0.625rem;
  opacity: 0;
  margin: 0 auto;
  width: 6.25rem;
  height: 6.25rem;
  cursor: pointer;
}

.arrow {
  position: absolute;
  top: 20px;
  left: 20px;
  border: 2px solid rgb(172, 99, 184);
  border-radius: 50%;
  width: 3.75rem;
  height: 3.75rem;
  background: rgb(89, 2, 176);
  text-align: center;
}

.arrow i.fa {
  font-size: 1.875rem;
  line-height: 1.8;
  color: rgb(172, 99, 184);
}

.arrow i.fa:hover {
  color: rgb(255, 255, 255);
}

.scroll-active {
  bottom: 1.25rem;
  opacity: 1;
  transform: translateY(-1.25rem);
  pointer-events: auto;
}