/*=============== GOOGLE FONTS ===============*/
@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600&display=swap");

/*=============== VARIABLES CSS ===============*/
:root {
  --header-height: 4rem;

  /*========== Colors ==========*/
  /*Color mode HSL(hue, saturation, lightness)*/
  --black-color: hsl(220, 24%, 12%);
  --black-color-light: hsl(220, 24%, 15%);
  --black-color-lighten: hsl(220, 20%, 18%);
  --white-color: #fff;
  --body-color: hsl(220, 100%, 97%);

  --bg-color: #081b29;
  --second-bg-color: #112e42;
  --text-color: #ededed;
  --second-color: #ccc;
  --main-color: #00abf0;
  --big-font: 5rem;
  --h2-font: 3rem;
  --p-font: 1.3rem;

  /*========== Font and typography ==========*/
  /*.5rem = 8px | 1rem = 16px ...*/
  --body-font: "Montserrat", sans-serif;
  --normal-font-size: 1.5rem;

  /*========== Font weight ==========*/
  --font-regular: 400;
  --font-semi-bold: 600;

  /*========== z index ==========*/
  --z-tooltip: 10;
  --z-fixed: 100;
}

/*========== Responsive typography ==========*/
@media screen and (min-width: 1024px) {
  :root {
    --normal-font-size: 1.5rem;
  }
}

/*=============== BASE ===============*/
* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  font-family: 'Poppins', sans-serif;
  text-decoration: none;
  list-style: none;
  border: none;
  outline: none;
  scroll-behavior: smooth;
}

html {
    font-size: 62.5%;
    overflow-x: hidden;
}

body {
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
//  background-color: var(--body-color);
  background-color: var(--bg-color);
}

ul {
  list-style: none;
  /* Color highlighting when pressed on mobile devices */
  /*-webkit-tap-highlight-color: transparent;*/
}

a {
  text-decoration: none;
}

/*=============== REUSABLE CSS CLASSES ===============*/
.container {
  max-width: 1120px;
  margin-inline: 1.5rem;
}

/*=============== HEADER ===============*/
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
//  background-color: var(--black-color);
  background: transparent;
  box-shadow: 0 2px 16px hsla(220, 32%, 8%, .3);
  z-index: var(--z-fixed);
}

/*=============== NAV ===============*/
.nav {
  height: var(--header-height);
}

.nav__logo, 
.nav__burger, 
.nav__close {
  color: var(--white-color);
}

.nav__data {
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo {
  display: inline-flex;
  align-items: center;
  column-gap: .25rem;
  font-weight: var(--font-semi-bold);
  /* Color highlighting when pressed on mobile devices */
  /*-webkit-tap-highlight-color: transparent;*/
}

.nav__logo i {
  font-weight: initial;
  font-size: 2.25rem;
}

.nav__logo img {
  height: 40px;
}

.nav__toggle {
  position: relative;
  width: 64px;
  height: 64px;
}

.nav__burger, 
.nav__close {
  position: absolute;
  width: max-content;
  height: max-content;
  inset: 0;
  margin: auto;
  font-size: 2.25rem;
  cursor: pointer;
  transition: opacity .1s, transform .4s;
}

.nav__close {
  opacity: 0;
}

/* Navigation for mobile devices */
@media screen and (max-width: 1118px) {
  .nav__menu {
    position: absolute;
    left: 0;
    top: 2.5rem;
    width: 100%;
    height: calc(100vh - 3.5rem);
    overflow: auto;
    pointer-events: none;
    opacity: 0;
    transition: top .4s, opacity .3s;
  }
  .nav__menu::-webkit-scrollbar {
    width: 0;
  }
  .nav__list {
    background-color: var(--black-color);
    padding-top: 1rem;
  }

  .nav__logo img {
    height: 30px;
  }
}

.nav__link {
  color: var(--white-color);
  background-color: var(--bg-color);
  font-weight: var(--font-semi-bold);
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color .3s;
}

.nav__link:hover {
  background-color: var(--black-color-light);
}

/* Show menu */
.show-menu {
  opacity: 1;
  top: 3.5rem;
  pointer-events: initial;
}

/* Show icon */
.show-icon .nav__burger {
  opacity: 0;
  transform: rotate(90deg);
}
.show-icon .nav__close {
  opacity: 1;
  transform: rotate(90deg);
}

/*=============== DROPDOWN ===============*/
.dropdown__item {
  cursor: pointer;
}

.dropdown__arrow {
  font-size: 1.25rem;
  font-weight: initial;
  transition: transform .4s;
}

.dropdown__link, 
.dropdown__sublink {
  padding: 1.25rem 1.25rem 1.25rem 2.5rem;
  color: var(--white-color);
  background-color: var(--black-color-light);
  display: flex;
  align-items: center;
  column-gap: .5rem;
  font-weight: var(--font-semi-bold);
  transition: background-color .3s;
}

.dropdown__link i, 
.dropdown__sublink i {
  font-size: 1.25rem;
  font-weight: initial;
}

.dropdown__link:hover, 
.dropdown__sublink:hover {
  background-color: var(--black-color);
}

.dropdown__menu, 
.dropdown__submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease-out;
}

/* Show dropdown menu & submenu */
.dropdown__item:hover .dropdown__menu, 
.dropdown__subitem:hover > .dropdown__submenu {
  max-height: 1000px;
  transition: max-height .4s ease-in;
}

/* Rotate dropdown icon */
.dropdown__item:hover .dropdown__arrow {
  transform: rotate(180deg);
}

/*=============== DROPDOWN SUBMENU ===============*/
.dropdown__add {
  margin-left: auto;
}

.dropdown__sublink {
  background-color: var(--black-color-lighten);
}

/* ==================== home ==================== */
section {  
    min-height: 100vh;
    padding: 160px 15% 120px;
}

.home {
    position: relative;
    height: 100vh;
    width: 100%;
    background: url('blockchain.gif') no-repeat;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 0 9%;
    color: #ededed;
}

.home_content {
    max-width: 60rem;
}

.home_content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #00abf0;
}

.home_content h1 {
    font-size: 5.6rem;
    font-weight: 700;
    line-height: 1.3;
}

.home_content h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-color);
}


.home_content .cta-button,
.home_content .cta-button:link,
.home_content .cta-button:visited,
.home_content .cta-button:active,
.home_content .cta-button:focus {
  display: inline-block;
  font-size: 1.6rem;
  margin: 2rem 0 4rem;
  padding: 12px 24px;
  background-color: #00abf0;
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  border-radius: 6px;
  transition: background-color 0.25s ease, transform 0.12s ease;
  -webkit-tap-highlight-color: transparent; /* hapus highlight mobile */
  box-shadow: none;
}

.home_content .cta-button:hover {
  background-color: #cc0022;
}



.btn_box {
    position: relative;
    display: flex;
    justify-content: space-between;
    width: 34.5rem;
    height: 5rem;
}

.btn_box .btn {
    position: relative;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 15rem;
    height: 100%;
    background: #00abf0;
    border: .2rem solid var(--main-color);
    border-radius: .8rem;
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: .1rem;
    color: var(--bg-color);
    text-decoration: none;
    z-index: 1;
    overflow: hidden;
    transition: .5;
}

.btn_box a:hover {
    color: var(--main-color);
}

.btn_box a:nth-child(2) {
    background: transparent;
    color: var(--main-color);
}
.btn_box a:nth-child(2):hover {
    color: var(--bg-color);
}

.btn_box a:nth-child(2)::before {
    background: var(--main-color);
}

.btn_box a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--bg-color);
    z-index: -1;
    transition: .5s;
}

.btn_box a:hover::before {
    width: 100%;
}

.home_sci {
    position: absolute;
    bottom: 4rem;
    width: 170px;
    display: flex;
    justify-content: space-between;
}

.home_sci a {
    position: relative;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: .2rem solid var(--main-color);
    border-radius: 50%;
    font-size: 20px;
    color: var(--main-color);
    text-decoration: none;
    z-index: 1;
    overflow: hidden;
    transition: .5s;
}

.home_sci a:hover {
    color: var(--bg-color);
}

.home_sci a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: var(--main-color);
    z-index: -1;
    transition: .5s;
}

.home_sci a:hover::before {
   width: 100%;
}

.home_imgHover {
    position: absolute;
    top: 0;
    right: 0;
    width: 650px;
    height: 100%;
    background: transparent;
    transition: 3s;
}

.home_imgHover:hover {
    background: var(--bg-color);
    opacity: .8;
}

/*=============== BREAKPOINTS ===============*/
/* For small devices */
@media screen and (max-width: 340px) {
  .container {
    margin-inline: 1rem;
  }

  .nav__link {
    padding-inline: 1rem;
  }
}

/* For large devices */
@media screen and (min-width: 1118px) {
  .container {
    margin-inline: auto;
  }

  .nav {
    height: calc(var(--header-height) + 2rem);
    display: flex;
    justify-content: space-between;
  }
  .nav__toggle {
    display: none;
  }
  .nav__list {
    height: 100%;
    display: flex;
    column-gap: 3rem;
  }
  .nav__link {
    height: 100%;
    padding: 0;
    justify-content: initial;
    column-gap: .25rem;
  }
  .nav__link:hover {
    background-color: transparent;
  }

  .dropdown__item, 
  .dropdown__subitem {
    position: relative;
  }

  .dropdown__menu, 
  .dropdown__submenu {
    max-height: initial;
    overflow: initial;
    position: absolute;
    left: 0;
    top: 6rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s, top .3s;
  }

  .dropdown__link, 
  .dropdown__sublink {
    padding-inline: 1rem 3.5rem;
  }

  .dropdown__subitem .dropdown__link {
    padding-inline: 1rem;
  }

  .dropdown__submenu {
    position: absolute;
    left: 100%;
    top: .5rem;
  }

  /* Show dropdown menu */
  .dropdown__item:hover .dropdown__menu {
    opacity: 1;
    top: 5.5rem;
    pointer-events: initial;
    transition: top .3s;
  }

  /* Show dropdown submenu */
  .dropdown__subitem:hover > .dropdown__submenu {
    opacity: 1;
    top: 0;
    pointer-events: initial;
    transition: top .3s;
  }

}