* {
  box-sizing: border-box;
  font-family: "Rubik", "Helvetica", "Arial", sans-serif;
}

body {
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: #525252;
  text-decoration: none;
  transition: color 400ms ease-in;
}

a:hover {
  color: #007bff;
  text-decoration: none;
}

a.blue-a {
  color: #007bff;
}

/* --- desktop sidebar --- */

.navbar-container {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 210px;
  background-color: #fff;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  border-right: 1px solid #c2c2c2;
}

.nav-menu {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.nav-ul {
  width: 70%;
  margin: 0;
  padding: 0;
}

.nav-ul > li {
  list-style-type: none;
  margin: 10px 0;
  padding: 0;
  width: 100%;
  text-align: center;
}

.nav-ul > li > a {
  color: #000;
}

.nav-ul > li > a:hover {
  color: #007bff;
}

.profile-img {
  height: 120px;
  width: 120px;
  border-radius: 50%;
  margin: 10% 0;
}

.nav-contact-me {
  width: 70%;
  font-size: 1.5rem;
  display: flex;
  justify-content: space-between;
  margin-bottom: 10%;
}

/* --- mobile header --- */

.nav-mobile {
  position: fixed;
  top: 0;
  left: 0;
  height: 50px;
  z-index: 100;
  display: none;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  background-color: #fff;
  padding: 0 20px;
  box-shadow: 0 0 8px #c2c2c2;
}

.mobile-img {
  height: 40px;
  width: 40px;
  border-radius: 50%;
}

.mobile-head {
  font-size: 0.9em;
  font-weight: bold;
  margin: 0;
}

.mobile-contact-me {
  font-size: 1.1rem;
  display: flex;
  gap: 14px;
}

/* --- main content --- */

.app-main-col {
  position: fixed;
  left: 210px;
  top: 0;
  bottom: 0;
  right: 0;
  overflow-y: scroll;
}

.layout-container {
  max-width: 90%;
  padding: 5%;
}

.contact-me {
  width: 100%;
  display: flex;
  justify-content: center;
}

hr {
  border: 0;
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  margin: 1rem 0;
}

@media only screen and (max-width: 768px) {
  .navbar-container {
    display: none;
  }

  .nav-mobile {
    display: flex;
  }

  .app-main-col {
    left: 0;
    padding-top: 50px;
  }
}