/* __________________________________________________-\ variables & container: ________________________________________________________________________________________________________________________ */

:root {
  /* Colours: */
  --primary-text-color: #7D8590;
  --secondary-text-color: #0D1117;
  /* Fonts: */
  --primary-serif-font: Palatino;
  /* --primary-serif-font: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif; */
  /* --primary-serif-font: Georgia; */
  /* font-family: Garamond; */
  /* font-family: Georgia, "Times New Roman", serif; */
  --primary-non-serif-font: Helvetica;
  --secondary-non-serif-font: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
  /* --secondary-non-serif-font: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif; */
  --primary-monospace-font: 'Courier New', Courier, monospace;
}

html {
  background: #0D1117;
  /* background: #fdf2e0; */
  font-size: 16px;
  margin: 0;
  padding: 0;
  padding-bottom: 4vh;
}

.container {
  margin: 0 auto;
  width: 100%;
  max-width: 1500px;
  margin-top: 5vh;
  font-family: var(--primary-non-serif-font);
  /* font-family: var(--primary-serif-font); */
  color: var(--primary-text-color);
  display: flex;
}

/*==============================
  NAVIGATION BAR
  ==============================*/
.space-left {
  width: 20%;
  flex-direction: column;
}

.nav-container {
  float: right;
  margin: 0 20% 0 2vw;
}

.nav-logo {
  font-family: var(--primary-serif-font);
  font-size: calc(1.375rem + 0.2vw); /* Scalable with min size of 22px. Used to be 26px. */
  margin-bottom: 7vh;
  /* border-bottom: 0.5px solid var(--primary-text-color); */
}

.nav-logo a {
  color: var(--primary-text-color);
  text-decoration: none;
}

ul {  
  padding: 0;
  margin: 0;
}

.nav-links li {
  list-style: none;
  padding: 1.5% 0 1.5% 0;
  border-bottom: 0.5px solid var(--primary-text-color);
}

.nav-links li:first-of-type {
  border-top: 0.5px solid var(--primary-text-color);
}

.nav-links-text {
  color: var(--primary-text-color);
  /* color: black; */
  text-decoration: none;
  font-size: 1.2rem;
  /* font-size: 0.875rem; */
  font-family: var(--primary-monospace-font);
  /* font-family: var(--primary-serif-font); */
}

.nav-links-text:hover {
  background-color: var(--primary-text-color);
  color: var(--secondary-text-color);
  /* font-weight: bold; */
}

/* #current-page {
  border-bottom: 1px solid #000;
  padding-bottom: 1px;
} 

#current-page:hover {
  font-weight: normal;
} */

.social {
  color: var(--primary-text-color);
  /* color: black; */
  padding-top: 2vh;
  font-size: 1.5rem;
}

/*==============================
MOBILE/BURGER CSS
===============================*/
.mobile-header {
  display: none;
}

.burger {
  display: none;
  cursor: pointer;
}

.burger div {
  width: 25px;
  height: 3px;
  background: var(--primary-text-color);
  /* background-color: black; */
  margin: 5px;
  transition: all 0.3s ease-in;
}

/*==============================
  MAIN CONTENT
==============================*/
.main-container {
  width: 60%;
  text-align: justify;
}

.title {
  font-size: 1.75rem;
  /* font-size: 1.25rem; */
  margin-bottom: 3vh;
  border-bottom: 1px solid var(--primary-text-color);
  /* border-bottom: 0.5px solid var(--primary-text-color); */
  padding-bottom: 7px;
  text-align: right;
  /* font-family: var(--primary-non-serif-font); */
  /* font-family: var(--primary-monospace-font); */
}

.text {
  font-size: 1.2rem;
  /* font-size: 1rem; */
}

.text-link {
  color: var(--primary-text-color);
  /* color: black; */
  font-family: var(--secondary-non-serif-font);
  text-decoration-line: underline;
  text-decoration-thickness: 2px;
  font-style: italic;
  text-underline-offset: 3px;
}

.text-link:hover {
  background-color: var(--primary-text-color);
  color: var(--secondary-text-color);
  /* color: gray; */
}

.text-styling {
  font-family: var(--primary-monospace-font);
}

/*==============================
  EMPTY SPACE ON THE RIGHT
==============================*/
.space-right {
  width: 20%;
}

/*==============================
  RESPONSIVE DESIGN: TABLET
==============================*/
@media screen and (max-width: 992px) {
  html {
    font-size: 13px;
    overflow-x: hidden;
  }

  .container {
    width: 80%;
  }

  .space-left {
    width: 0%;
  }

  .main-container {
    width: 100%;
    margin: 1vh 2vh 2vh 2vh;
  }

  .space-right {
    display: none;
  }

  .mobile-header {
    display: flex;
    font-size: 1.625rem;
    justify-content: space-between;
    border-bottom: 0.5px solid var(--primary-text-color);
    /* border-bottom: 1px solid #000; */
    padding-bottom: 5px;
    font-family: var(--primary-serif-font);
  }

  .mobile-header a {
    text-decoration: none;
    color: var(--primary-text-color);
  }

  .title {
    padding: 1.5vh 0 1.5vh 0;
    border-bottom: 0.5px solid var(--primary-text-color);
  }

  /*==============================
  RESPONSIVE MOBILE/BURGER
==============================*/
  .burger {
    display: block;
  }

  .nav-logo {
    display: none;
  }

  .nav-links {
    position: fixed;
    right: 0px;
    height: 100%;
    top: 0;
    background: var(--secondary-text-color);
    /* background-color: #a51f26; */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    transform: translateX(100%);
    transition: transform 0.5s ease-in;
    /* opacity: 0.95; */
  }

  .nav-links li {
    opacity: 1;
    border-bottom: none;
  }

  .nav-links li:first-of-type {
    border-top: none;
  }

  .nav-links-text {
    font-size: 3.75rem;
    color: var(--primary-text-color);
    font-family: var(--primary-non-serif-font);
    /* font-family: var(--secondary-non-serif-font); */
    /* color: #fff9e5; */
  }

  #current-page {
    border-bottom: 2px solid #fff9e5;
    padding-bottom: 1px;
  }

  .social {
    /* color: #fff9e5; */
    padding: 2% 0 5vh 0;
    font-size: 3.75rem;
  }

  .nav-active {
    transform: translateX(0%);
  }

  .toggle .line1 {
    transform: rotate(-45deg) translate(-5px, 6px);
    background: var(--primary-text-color);
    /* background-color: #fff9e5; */
  }

  .toggle .line2 {
    opacity: 0;
  }

  .toggle .line3 {
    transform: rotate(45deg) translate(-5px, -6px);
    background: var(--primary-text-color);
    /* background-color: #fff9e5; */
  }
}

/*==============================
  RESPONSIVE DESIGN: PHONE
==============================*/
@media screen and (max-width: 576px) {
  .container {
    width: 90%;
    margin-top: 4vh;
  }

  .main-container {
    margin: 0;
    padding: 0;
    text-align: left;
  }

  .title {
    text-align: center;
    font-family: var(--secondary-non-serif-font);
    font-weight: bold;
  }

  .text {
    padding: 0;
    /* padding: 0 8% 0 8%; */
    font-size: 1.5rem;
  }
}