header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 996;

  width: 100%;

  background-color: var(--header-color);
  transition: all 0.3s linear;
}

header .header-container {
  position: relative;
  height: var(--header-height);

  display: flex;
  justify-content: space-between;
  align-items: center;

  padding: 0 1rem;

  -webkit-transition: all 0.4s ease;
  transition: all 0.4s ease;
}

header .header-container .multi-button {
  background-color: var(--color-3);

  border: 2px solid var(--color-5);

  display: flex;
  width: 200px;
  position: relative;
  border-radius: 45px;
  overflow: hidden;
  transition: width 0.4s, transform 0.8s;
  padding: 3px;
}

header .header-container .multi-button .separator {
  height: 50%;
  width: 2px;
  background-color: var(--color-5);
  position: absolute;
  left: 50%;
  top: 25%;
}

header .header-container .multi-button span {
  position: absolute;
  opacity: 0;
  z-index: 0;
  height: 100%;
  background-color: var(--color-5);
  left: 0;
  top: 0;
  transition: 0.7s left, 0.7s right, 0.2s opacity;
}

header .header-container .multi-button a {
  background: transparent;
  font-size: var(--font-size-nav-xs);
  color: var(--text-color-1);
  padding: 0.3em;
  margin: 0;
  z-index: 1;
  text-transform: capitalize;
  text-align: center;
  font-weight: 700;
  width: 100px;
  cursor: pointer;
  transition: 0.2s all, 0.3s color;
  border-width: 0;
}

header .header-container .multi-button a.active,
header .header-container .multi-button a:hover {
  color: var(--text-color-2);
  width: 120px;
}

header .header-container .multi-button a:not(.active):hover {
  color: var(--text-color-2);
}

header .header-container .multi-button a.active.hovered {
  color: var(--text-color-1);
}

header .header-container .multi-button a.active.hovered:hover {
  color: var(--text-color-2);
}

header .header-container .logo {
  width: 160px;
}

header .header-container .navbar {
  display: none;

  width: 100%;

  position: fixed;
  top: calc(var(--header-height)); /* img height + padding navbar */
  left: 0;
  bottom: 0;

  background-color: var(--header-color);
}

header .header-container .navbar-menu {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: stretch;

  width: 100%;
  height: 100%;

  margin: 0;
  padding: 0;
}

header .header-container .navbar-menu .navbar-link {
  position: relative;
  display: none;

  text-align: center;
}

header .header-container .navbar-menu .navbar-link a {
  position: relative;
  display: inline-block;

  font-family: var(--font-family-headlines);
  font-weight: 700;
  font-size: var(--font-size-nav-xs);
  text-transform: capitalize;
  text-shadow: none;
  text-wrap: nowrap;
  color: var(--text-color-1);

  -webkit-transition: color 0.3s;
  -moz-transition: color 0.3s;
  transition: color 0.3s;
}

header .navbar-menu .navbar-link a::after {
  width: 100%;
  height: 2px; /* thickness */
  content: "";

  position: absolute;
  left: 0;

  background: var(--text-color-1);
  opacity: 0;

  -webkit-transition: opacity 0.3s, -webkit-transform 0.3s;
  -moz-transition: opacity 0.3s, -moz-transform 0.3s;
  transition: opacity 0.3s, transform 0.3s;
  -webkit-transform: translateY(-10px);
  -moz-transform: translateY(-10px);
  transform: translateY(-10px);
}

header .navbar-menu .navbar-link a::after {
  bottom: -2px;
  -webkit-transform: translateY(10px);
  -moz-transform: translateY(10px);
  transform: translateY(10px);
}

header .navbar-menu .navbar-link a:hover,
header .navbar-menu .navbar-link a:focus {
  color: var(--text-color-1);
}

header .navbar-menu .navbar-link.active a::after,
header .navbar-menu .navbar-link a:hover::after,
header .navbar-menu .navbar-link a:focus::after {
  opacity: 1;
  -webkit-transform: translateY(0px);
  -moz-transform: translateY(0px);
  transform: translateY(0px);
}

header .navbar-menu .navbar-link.active a {
  color: var(--text-color-1) !important;
}

header .navbar-menu .navbar-link.active:hover a {
  pointer-events: none;
}

header .btn-hamburger {
  width: 20px;
  /* height: 15px; */

  background-color: transparent;
  border: none;
  cursor: pointer;
}

header .btn-hamburger i {
  display: block;

  width: 100%;
  height: 2px;
  content: "";

  background-color: var(--text-color-1);
}

header .btn-hamburger i:nth-child(1) {
  -webkit-animation: outT 0.8s backwards;
  animation: outT 0.8s backwards;
  -webkit-animation-direction: reverse;
  animation-direction: reverse;
}

header .btn-hamburger i:nth-child(2) {
  margin: 4px 0;

  -webkit-animation: outM 0.8s backwards;
  animation: outM 0.8s backwards;
  -webkit-animation-direction: reverse;
  animation-direction: reverse;
}

header .btn-hamburger i:nth-child(3) {
  -webkit-animation: outBtm 0.8s backwards;
  animation: outBtm 0.8s backwards;
  -webkit-animation-direction: reverse;
  animation-direction: reverse;
}

header .btn-hamburger.active i:nth-child(1) {
  -webkit-animation: inT 0.8s forwards;
  animation: inT 0.8s forwards;
}

header .btn-hamburger.active i:nth-child(2) {
  -webkit-animation: inM 0.8s forwards;
  animation: inM 0.8s forwards;
}

header .btn-hamburger.active i:nth-child(3) {
  -webkit-animation: inBtm 0.8s forwards;
  animation: inBtm 0.8s forwards;
}

.nav-item {
  text-decoration: none;
  color: inherit;
}

.nav-item.active {
  font-weight: bold;
  text-decoration: underline;
}

/* media queries */
@media only screen and (min-width: 768px) {
  header .header-container .logo {
    width: 230px;
  }
  header .header-container .multi-button a,
  header .header-container .navbar-menu .navbar-link a {
    font-size: var(--font-size-nav-md);
  }
}

/* media queries */
@media only screen and (min-width: 992px) {
  :root {
    --header-height: var(--header-height-expanded);
  }

  header .header-container {
    padding: 0 2rem;
  }

  header .header-container .logo {
    width: auto;
    height: calc(var(--header-height) - 2rem);
    transition: all 0.3s ease-in-out;
    max-width: 300px;
  }

  header .header-container .navbar {
    display: block;
    width: initial;

    position: static;

    background-color: transparent;
  }

  header .header-container .navbar-menu {
    flex-direction: row;
  }

  header .header-container .navbar-menu .navbar-link {
    display: block !important;

    font-size: 1.4rem;
    padding-left: 1.5rem;
  }

  header .header-container .navbar-menu .navbar-link:has(.nav-link.d-lg-none) {
    padding-left: 0;
  }
}

@media only screen and (min-width: 1200px) {
  header .header-container .navbar-menu .navbar-link {
    padding-left: 2rem;
  }

  header .header-container .multi-button {
    width: 250px;
  }

  header .header-container .multi-button a {
    width: 125px;
  }

  header .header-container .multi-button a.active,
  header .header-container .multi-button a:hover {
    width: 150px;
  }

  header .header-container .navbar-menu .navbar-link a {
    font-size: var(--font-size-nav-xl);
    font-weight: 700;
  }
}

@-webkit-keyframes inM {
  50% {
    -webkit-transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(45deg);
  }
}

@keyframes inM {
  50% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(45deg);
  }
}

@-webkit-keyframes outM {
  50% {
    -webkit-transform: rotate(0deg);
  }
  100% {
    -webkit-transform: rotate(45deg);
  }
}

@keyframes outM {
  50% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(45deg);
  }
}

@-webkit-keyframes inT {
  0% {
    -webkit-transform: translateY(0px) rotate(0deg);
  }
  50% {
    -webkit-transform: translateY(6px) rotate(0deg);
  }
  100% {
    -webkit-transform: translateY(6px) rotate(135deg);
  }
}

@keyframes inT {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(6px) rotate(0deg);
  }
  100% {
    transform: translateY(6px) rotate(135deg);
  }
}

@-webkit-keyframes outT {
  0% {
    -webkit-transform: translateY(0px) rotate(0deg);
  }
  50% {
    -webkit-transform: translateY(6px) rotate(0deg);
  }
  100% {
    -webkit-transform: translateY(6px) rotate(135deg);
  }
}

@keyframes outT {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(6px) rotate(0deg);
  }
  100% {
    transform: translateY(6px) rotate(135deg);
  }
}

@-webkit-keyframes inBtm {
  0% {
    -webkit-transform: translateY(0px) rotate(0deg);
  }
  50% {
    -webkit-transform: translateY(-6px) rotate(0deg);
  }
  100% {
    -webkit-transform: translateY(-6px) rotate(135deg);
  }
}

@keyframes inBtm {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-6px) rotate(0deg);
  }
  100% {
    transform: translateY(-6px) rotate(135deg);
  }
}

@-webkit-keyframes outBtm {
  0% {
    -webkit-transform: translateY(0px) rotate(0deg);
  }
  50% {
    -webkit-transform: translateY(-6px) rotate(0deg);
  }
  100% {
    -webkit-transform: translateY(-6px) rotate(135deg);
  }
}

@keyframes outBtm {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-6px) rotate(0deg);
  }
  100% {
    transform: translateY(-6px) rotate(135deg);
  }
}