@import url('https://fonts.googleapis.com/css2?family=Open+Sans&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Inter&family=Open+Sans&family=Roboto&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Montserrat&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Lato&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Work+Sans&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Slabo+13px&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Ubuntu&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Raleway&display=swap');




/* Rubik, Inter, Plus Jakarta Sans */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@700&family=Raleway&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Rubik&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Inter&family=Open+Sans&display=swap');

:root {
  --font-primary: 'Rubik', sans-serif;
  --font-secondary: 'Poppins', sans-serif;
  --text-color: #ffffff;

}

/* Base */

* {
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: #2884b4;
  color: var(--text-color);
  font-family: var(--font-primary);
}

body::-webkit-scrollbar {
  display: none;
}

a {
  text-decoration: none;
}

h4 {
  font-size: 1.17em;
}

.container {
  margin-left: 1.5rem;
  margin-right: 1.5rem;
}

.container-medium {
  margin-left: 1.5rem;
  margin-right: 1.5rem;
}

/* Header */

.header {
  width: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 100;
}

.nav {
  height: 3.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo img {
  height: 50px;
  margin-top: 40px;
}

.nav-toggle {
  display: inline-flex;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-color);
}

/* Navigation Menu */

@media screen and (max-width:1100px) {
  .nav-menu {
    position: fixed;
    background-color: #2A84B5;
    width: 100%;
    height: 365px;
    top: -100%;
    left: 0;
    box-shadow: rgba(99, 99, 99, 0.2) 0px 2px 8px 0px;
    z-index: 100;
    padding: 4rem 0 0 3rem;
    transition: .3s;
  }

  #nav-menu-index {
    height: 320px;
  }
}

.nav-close {
  font-size: 1.5rem;
  position: absolute;
  top: 1rem;
  right: 1.25rem;
  cursor: pointer;
}

.nav-list {
  display: flex;
  flex-direction: column;
  row-gap: 1.5rem;
  list-style: none;
}

.nav-link {
  color: var(--text-color);
  font-weight: 500;
  transition: .3s;
  font-size: 16px;
  letter-spacing: .1rem;
  color: #ECECEC;
}

.nav-link:hover {
  color: #ffffffa2;
}

.show-menu {
  top: 0;
  right: 0;
}

/* Hero */

.hero {
  background-color: #1E2225;
  position: relative;
  padding: 6rem 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero h1 {
  font-size: 12vw;
  font-family: var(--font-secondary);
  color: #72D5FA;
}

.hero p {
  color: #ECECEC;
  font-size: 4vw;
  letter-spacing: 1px;
}

.hero h2 {
  font-family: var(--font-secondary);
  font-weight: 300;
  display: flex;
  align-items: center;
  margin-top: 1.5rem;
}

.call-to-action-hero {
  display: none;
  visibility: hidden;
}

/* Experience */

.experience {
  height: 100%;
  /* padding-top: 60px;
  padding-bottom: 80px; */
  margin: 8rem 0;
}

h3 {
  font-family: var(--font-secondary);
  letter-spacing: 1px;
  width: 80%;
  font-size: 3rem;
}

.accordion-experience {
  position: relative;
  width: 100%;
  color: #212121;
  margin-top: 2rem;
}

.accordion-experience section {
  display: block;
  width: 100%;
  left: 0;
}

.accordion-experience section input[name="sections"] {
  left: -9999px;
  position: absolute;
}

.accordion-experience section input[name="sections"]:checked+label {
  background-color: #212121;
  color: #ffffff;
  border: 2px solid #ffffff;
}

.accordion-experience section input[name="sections"]:checked~article {
  display: block;
}

.accordion-experience section label {
  font-family: var(--font-primary);
  color: #ffffff;
  font-weight: 300;
  cursor: pointer;
  display: block;
  letter-spacing: .1rem;
  font-size: 1.2rem;
  padding: 1rem 0.83rem;
  position: relative;
  width: 100%;
  z-index: 100;
  border: 2px solid #212121;
}

.accordion-experience section article {
  display: none;
  left: 0;
  width: 100%;
  position: relative;
  top: 0;
  font-family: var(--font-primary);
  font-weight: 300;
  line-height: 1.7;
  padding: 2rem 0;
}

.accordion-experience section article ul li {
  font-weight: 300;
  font-size: 18px;
  color: #ECECEC;
  list-style: disc;
  list-style-position: inside;
  padding-left: .5rem;
  padding-right: .5rem;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.accordion-experience section article ul {
  margin-top: 24px;
}

.accordion-experience section article>p {
  color: #6cace4;
  font-weight: 300;
  font-size: 14px;
  margin: 16px 0 16px 0;
  letter-spacing: 1px;
  opacity: .8;

}

.title-experience {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.title-experience h2 {
  color: #fff;
}

.accordion-experience section article:after {
  background-color: transparent;
  bottom: 0;
  content: "";
  display: block;
  left: -229;
  position: absolute;
  top: 0;
  width: 220px;
  z-index: 1;
}

/* Events */

.featured-event .container-medium hr {
  border-color: #c6c6c6;
  margin-bottom: 50px;
}

.box-featured-events {
  margin-top: 50px;
  display: grid;
  gap: 20px 20px;
}

.box-featured-events .event img {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.head-event {
  margin-top: 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 18px;
}

.head-event h3 {
  font-family: var(--font-primary);
  font-weight: 400;
  letter-spacing: 1px;
  font-size: 24px;
  width: 80%;
}

.box-featured-events .event p {
  margin-top: 10px;
  font-family: var(--font-primary);
  font-weight: 300;
  font-size: 14px;
  letter-spacing: .05rem;
  line-height: 1.3rem;
  letter-spacing: 1px;
}

.box-featured-events .event .p-tech {
  color: #ffffff9d;
}

/* Our Team */

.our-team .container-medium hr {
  border-color: #c6c6c6;
  margin-bottom: 50px;
}

.our-team h4 {
  font-family: var(--font-primary);
  font-weight: 500;
  letter-spacing: 1px;
  width: 80%;
  font-size: 1.5em;
}

.team-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2vw;
  margin-bottom: 5rem;
}

.member {
  flex: 1 1 275px;
  margin: 20px;
  text-align: center;
  padding: 20px 10px;
  max-width: 300px;
  transition: all 0.3s;
}

.member:hover {
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  transform: translateY(-20px);
}

.member img {
  display: block;
  width: 15vw;
  height: 15vw;
  object-fit: cover;
  object-position: center;
  border: 4px solid #0a293e;
  border-radius: 50%;
  margin: 0 auto;
}

.member h2 {
  text-transform: uppercase;
  font-size: 24px;
  color: #fff;
  margin: 15px 0;
  font-family: var(--font-primary);
  font-weight: 400;
  letter-spacing: 1px;
}

.member p {
  font-size: 18px;
  font-weight: 500;
  color: #fff;
  line-height: 1.6;
  letter-spacing: 1px;
}

/* Footer */

footer {
  width: 100%;
  background: #1E2225;
  padding: 100px 0 30px;
  margin-top: 5vh;
  line-height: 20px;
  color: #c6c6c6; 
  font-size: 1rem;
}

footer .row {
  width: 100%;
  margin: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: start;
  justify-content: space-between;
  gap: 6%;
}

footer .col {
  flex-basis: 20%;
}

.col h3 {
  font-family: var(--font-primary);
  width: fit-content;
  margin-bottom: 4vh;
  font-size: 1.4rem;
  color: #fff; 
}

footer ul li {
  list-style: none;
  margin-bottom: 1vh;
}

footer ul li a {
  text-decoration: none;
  color: #c6c6c6;
  transition: color .3s ease;
  cursor: pointer;
}

footer ul li a:hover {
  color: #747474;
}

footer i {
  margin-right: 5px;
}

.big-icon {
  float: left;
  transform: scale(2);
}

footer hr {
  width: 100%;
  border-bottom: 1px #c6c6c6;
  margin: 20px auto;
}

/* More button */

.box__button-more {
  margin-top: 20px;
  display: grid;
  justify-content: center;
}

.box__button-more .button-more {
  padding: 12px 18px;
  justify-content: center;
  border-radius: 4px;
  border-image-slice: 1;
  background-color: transparent;
}

.box__button-more .button-more {
  cursor: pointer;
}

.box__button-more .button-more p {

  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .8rem;
  font-weight: 300;
  justify-content: center;
  letter-spacing: 1px;
  opacity: .8;
}

.button-more {
  width: 250px;
  border: 2px solid #6cace4;
}

/* Responsive Design */

@media screen and (min-width: 767px) {
  /* More button */

  .box__button-more .button-more p {
    transition: all .3s ease-in-out;
    font-size: 1rem;
  }

  .box__button-more .button-more:hover p {
    color: #c6c6c6;
  }

  .button-more {
    width: 400px;
  }
}

@media screen and (min-width: 1100px) {
  /* Base */

  .container,
  .container-medium {
    margin-left: auto;
    margin-right: auto;
  }

  .container {
    width: 75%;
  }

  .container-medium {
    width: 75%;
  }

  /* Header */

  .header {
    height: 5rem;
    position: fixed;
    align-items: center;
    z-index: 1000;
    transition: all .2s ease-in;
    padding: 3vh 0 0 0;
  }

  .header.sticky {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    padding: 1vh 0 0 0;
  }

  .nav-toggle,
  .nav-close {
    display: none;
  }

  .nav-link {
    font-size: 1vw;
  }

  .nav-list {
    flex-direction: row;
    column-gap: 3rem;
  }

  .nav-menu {
    margin-left: auto;
  }

  .nav-logo img {
    height: 5vh;
    margin-top: 0.5vh;
  }

  /* Hero */

  .hero {
    padding: 8rem 0;
  }

  .hero p:nth-child(1) {
    font-size: 1.1rem;
  }

  .hero p {
    font-size: 1.3rem;
    width: 50%;
    line-height: 3vh;
  }

 .hero b {
  color: #72D5FA;
 }

  .hero h1 {
    font-size: 6vw;
    margin-bottom: 2vh;
    letter-spacing: -4px;
  }

  .fullsizehero {
    height: 80vh;
    padding-top: 10%;
    display: flex;
    flex-direction: column;
  }
  
  a.button-link {
    width: 9vw;
  }

  .call-to-action-hero {
    display: block;
    visibility: visible;
    text-align: center;
    cursor: pointer;
    background: none;
    width: 11vw;
    height: 5vh;
    margin-top: 1rem;
    border: 2px solid #72D5FA;
    border-radius: 10px;
    color: #72D5FA;
    font-family: var(--font-primary);
    font-size: 1.3rem;
    transition: .4s ease-in-out;
    padding: 1vh 0 0 0;
    overflow: hidden;
    transition: all 0.5s ease;
    position: relative;
    z-index: 1;
    margin-top: 5vh;
  }

  .call-to-action-hero::before {
    content: "";
    background: #72D5FA;
    width: 100%;
    height: 0;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    transition: all 0.5s ease;
    z-index: -1;
  }

  .call-to-action-hero:hover {
    color: #1E2225;
  }
  .call-to-action-hero:hover::before {
    height: 450%;
  }

  /* Experience */

  .accordion-experience {
    width: 100%;
    color: rgba(48, 69, 92, 1);
    margin-top: 3rem;
  }

  .accordion-experience section label {
    border-color: #1f1e1e;
    border-style: solid;
    border-width: 0 0 0 2px;
    width: 20%;
  }

  .accordion-experience section label:hover span {
    transition: all .3s ease-in-out;
  }

  .accordion-experience section label:hover span {
    margin-left: 6px;
  }

  .accordion-experience section input[name="sections"]:checked+label {
    background-color: #1f1e1e;
    color: #ffffff;
    border-style: solid;
    border-width: 0 0 0 2px;
  }

  .accordion-experience section article {
    position: absolute;
    width: 70%;
    left: 26.5%;
    padding: 0;
  }

  .title-experience {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  /* Event */

  .box-featured-events {
    grid-template-columns: repeat(3, 1fr);
  }

  .event {
    cursor: pointer;
  }

  .event img {
    transition: all .3s ease-in-out;
  }

  .event:hover img {
    transform: scale(1.02)
  }

  /* Footer */


}

/* Responsive Design strange implementation */
/* it is done this ways for fixing post page arrangement */
@media screen and (min-width: 1200px) and (max-width: 1600px) {
  /* Base */

  .container,
  .container-medium {
    margin-left: auto;
    margin-right: auto;
  }

  .container {
    width: 85%;
  }

  .container-medium {
    width: 75%;
  }

    footer .row {
    gap: 2%;
  }
}

@media screen and (min-width: 1100px) and (max-width: 1200px) {
  /* Base */

  .container,
  .container-medium {
    margin-left: auto;
    margin-right: auto;
  }

  .container {
    width: 95%;
  }

  .container-medium {
    width: 85%;
  }

  footer .row {
    gap: 2%;
  }
}

/* Back on top button */

#btn-back-on-top {
  display: inline-block;
  background-color: #1d1d1d;
  width: 50px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  border-radius: 50%;
  position: fixed;
  bottom: 45px;
  right: 45px;
  transition: background-color .3s,
    opacity .5s, visibility .5s;
  opacity: 0;
  z-index: 1000;
}

#btn-back-on-top i {
  font-size: 32px;
  color: #2884b4;
}

#btn-back-on-top:hover {
  cursor: pointer;
  background-color: #333;
}

#btn-back-on-top.show {
  opacity: .8;
}

@media screen and (min-width: 767px) {
  #btn-back-on-top {
    bottom: 100px;
    right: 100px;
  }
}

@media (max-width: 767px) {
  .member img {
  display: block;
  width: 60vw;
  height: 60vw;
  object-fit: cover;
  border: 4px solid #0a293e;
  border-radius: 50%;
  margin: 0 auto;
}

footer .row{
  flex-direction: column;
  gap: 5vh;
}
}