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

:root {
  --pri: 255, 192, 0;
  --sec: 0, 0, 0;
  --content-bg: 20, 20, 20;
  --sec-hue: 0;
  --ft: "Poppins", sans-serif;
  --logo-ft: "Arial", sans-serif;

  --header-padding-x: 4rem;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--ft);
  background: #1E1E1E;
  background-image: linear-gradient(#000A, #000A), url('/assets/imgs/Background\ A4001.compressed.jpg');
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

/* ERROR & SUCCESS POPUPS */

.tie-popup {
  ---bg: #fff;
  ---fg: #000;
  ---dark: #000;
  position: absolute;
  top: calc(100% + 1em);
  right: 1em;
  padding: 1em 2em;
  max-width: 500px;
  background-color: var(---bg);
  color: var(---fg);
  border: 2px solid var(---dark);
  animation-name: tie-popup-fade;
  animation-duration: .5s;
  animation-delay: 4s;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
  z-index: 999;
}

.tie-popup::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background-color: var(---dark);
  transform-origin: left;
  animation: tie-popup-progress-grow linear 4s;
}

.tie-popup.success {
  ---bg: #8f8;
  ---fg: #272;
  ---dark: #494;
} .tie-popup.error {
  ---bg: #f88;
  ---fg: #722;
  ---dark: #944;
}

.tie-popup p {
  margin-bottom: 0;
}

@keyframes tie-popup-fade {
  0% {
    opacity: 1;
  } 100% {
    opacity: 0;
  }
}

@keyframes tie-popup-progress-grow {
  0% {
    transform: scaleX(0);
  } 100% {
    transform: scaleX(1);
  }
}

i.fa-asterisk {
  color: red;
  font-size: .5em;
  translate: 0 -90%;
}

header {
  display: flex;
  width: 100%;
  background-color: rgb(var(--sec));
  padding: 0 var(--header-padding-x);
  gap: 2rem;
  z-index: 998;
}

header #logo {
  display: grid;
}

header #logo img {
  height: 10rem;
  margin: auto 0;
}

#iso-group {
  display: flex;
  flex-flow: column;
  margin: auto 0;
  margin-left: auto;
  padding: 1rem 0;
  justify-content: space-between;
  height: 100%;
}

#iso-group img {
  height: 3rem;
}

#iso-group p {
  color: rgb(var(--pri));
  margin: 0 auto;
  letter-spacing: .2em;
  font-family: monospace;
  font-size: 1.25em;
}

header #login {
  text-decoration: none;
  padding: .5rem 1rem;
  text-transform: uppercase;
  color: rgb(var(--sec));
  background-color: transparent;
  border: 2px solid rgb(var(--pri));
  color: rgb(var(--pri));
  margin: auto 0;
  border-radius: .3em;
  transition: background-color .2s;
}

header #login:hover,
header #login:focus {
  background-color: rgba(var(--pri));
  color: rgb(var(--sec));
}

#header-nav-toggle {
  display: none;
  position: relative;
  width: 4em;
  height: 4em;
  margin: auto 0;
  margin-left: auto;
  border: 0;
  background-color: transparent;
  cursor: pointer;
}

#header-nav-toggle span {
  position: absolute;
  top:50%;
  left:50%;
  width: 100%;
  height: 12%;
  border-radius: 999px;
  transform: translate(-50%, -50%);
  background-color: rgb(var(--pri));
  animation: nav-toggle-mid-b .5s;
}

#header-nav-toggle span:first-child {
  top: 20%;
  animation: nav-toggle-down-b .5s;
}

#header-nav-toggle span:last-child {
  top: 80%;
  animation: nav-toggle-up-b .5s;
}

.nav-open #header-nav-toggle span {
  transform: translate(-50%, -50%) rotateZ(45deg);
  animation: nav-toggle-down-f .5s;
}

.nav-open #header-nav-toggle span:first-child {
  top: 50%;
  transform: translate(-50%, -50%) rotateZ(45deg);
}

.nav-open #header-nav-toggle span:last-child {
  top: 50%;
  transform: translate(-50%, -50%) rotateZ(-45deg);
  animation: nav-toggle-up-f .5s;
}

#header__nav {
  position: relative;
  padding: 0 var(--header-padding-x);
  background: rgb(var(--content-bg));
}

#header__nav__ul {
  display: flex;
  flex-flow: row wrap;
  justify-content: flex-start;
  list-style-type: none;
}

.nav__item {
  transition: background-color .1s;
}

.nav__item a {
  text-transform: uppercase;
  text-decoration: none;
  color: rgb(var(--pri));
  font-weight: 200;
}

.nav__item > a {
  display: inline-block;
  cursor: pointer;
  padding: 1rem 1rem;
  text-align: center;
}

.nav__item:hover,
.nav__item:focus-within {
  background: hsl(var(--sec-hue), 0%, 22%);
}

.nav__drop {
  display: none;

  position: absolute;
  flex-flow: row wrap;
  justify-content: flex-start;
  gap: 3rem;
  top:100%;
  left:0;
  width: 100%;
  background: hsl(var(--sec-hue), 0%, 22%);
  padding: 1rem var(--header-padding-x);
  list-style-type: none;
  z-index: 998;
}

.nav__item:hover .nav__drop,
.nav__item:focus-within .nav__drop {
  display: flex;
}

.drop__cat ul {
  list-style-type: none;
}

.drop__cat > a {
  display: inline-block;
  font-weight: 400;
  padding-bottom: .5rem;
}

.drop__cat__item {
  transition: transform .1s;
}

.drop__cat__item:hover,
.drop__cat__item:focus-within {
  transform: translateX(.2em);
}

footer {
  display: flex;
  flex-flow: column nowrap;
  background-color: rgb(var(--sec));
  padding: 2rem var(--header-padding-x);
  gap: 1rem;
}

footer #iso-group {
  margin: 0;
}

.footer__logos {
  display: flex;
  flex-flow: row wrap;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  width: 100%;
}

.footer__logos a {
  display: grid;
}

.footer__logos img {
  height: 9rem;
  margin: auto 0;
}

footer .text {
  display: flex;
  flex-flow: column nowrap;
  gap: .5em;
  color: rgb(var(--pri));
  text-align: center;
  font-weight: 300;
}

footer .text a {
  color: inherit;
  text-decoration: none;
  font-weight: 600;
  transition: opacity .1s;
}

footer .text a:hover {
  opacity: .75;
}

.todo {
  width:100%;
  padding: 1rem;
  background-color: red;
  color: white;
  text-transform: uppercase;
  text-align: center;
}

.todo::before {
  content: 'TODO: ';
}

@media (max-width: 1000px) {
  header #iso-group { display: none; }
  header #login { display: none; }
  header #header-nav-toggle { display: block; }

  #header__nav__ul {
    display: none;
    flex-flow: column nowrap;
    align-items: center;
  }

  .nav-open #header__nav__ul {
    display: flex;
  }

  .nav__item {
    display: flex;
    flex-flow: column nowrap;
    align-items: center;
  }

  .nav__drop {
    position: static;
    padding: 0 2rem 1rem;
  }
}

@media (max-width: 640px) {
  :root {
    --header-padding-x: 2rem;
  }

  header #logo img {
    height: 3rem;
  }

  .footer__logos img {
    height: 5rem;
  }
}

@keyframes nav-toggle-down-f {
  0% {
    top: 20%;
    transform: translate(-50%, -50%) rotateZ(0);
  } 50% {
    top: 50%;
    transform: translate(-50%, -50%) rotateZ(0);
  } 100% {
    transform: translate(-50%, -50%) rotateZ(45deg);
  }
}

@keyframes nav-toggle-up-f {
  0% {
    top: 80%;
    transform: translate(-50%, -50%) rotateZ(0);
  } 50% {
    top: 50%;
    transform: translate(-50%, -50%) rotateZ(0);
  } 100% {
    transform: translate(-50%, -50%) rotateZ(-45deg);
  }
}

@keyframes nav-toggle-down-b {
  0% {
    top: 50%;
    transform: translate(-50%, -50%) rotateZ(45deg);
  } 50% {
    transform: translate(-50%, -50%) rotateZ(0);
  } 100% {
    top: 20%;
    transform: translate(-50%, -50%) rotateZ(0);
  }
}

@keyframes nav-toggle-up-b {
  0% {
    top: 50%;
    transform: translate(-50%, -50%) rotateZ(-45deg);
  } 50% {
    transform: translate(-50%, -50%) rotateZ(0);
  } 100% {
    top: 80%;
    transform: translate(-50%, -50%) rotateZ(0);
  }
}

@keyframes nav-toggle-mid-b {
  0% {
    top: 50%;
    transform: translate(-50%, -50%) rotateZ(45deg);
  } 50% {
    transform: translate(-50%, -50%) rotateZ(0);
  } 100% {
    top: 50%;
    transform: translate(-50%, -50%) rotateZ(0);
  }
}