/* reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Poppins', sans-serif;
}

:root {
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  --font-display: "Space Grotesk", var(--font-sans);
}

body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

body, html {
  font-family: var(--font-sans);
}

html, body {
  overflow-x: hidden;
}

/* #region nav bar */

nav {
  width: 100%;
  position: fixed;
  top: 0; left: 0;
  padding: 16px 3%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 1000;
}

.nav-parent { cursor: default; }

.brand { display: flex; align-items: center; gap: .75rem; }

.logo { display: block; width: 80px; height: auto; }

/* hamburger */
#nav-toggle { display: none; }
.burger {
  display: none;
  width: 36px; height: 28px;
  position: relative;
  cursor: pointer;
}
.burger span,
.burger::before,
.burger::after {
  content: "";
  position: absolute; left: 0; right: 0;
  height: 3px; border-radius: 2px;
  background: #fff;
  transition: transform .25s ease, opacity .25s ease;
}
.burger span { top: 50%; transform: translateY(-50%); }
.burger::before { top: 4px; }
.burger::after { bottom: 4px; }

.menu {
  display: flex; align-items: center; gap: 28px;
  list-style: none; margin: 0; padding: 0;
}
.menu > li { position: relative; }

.menu a {
  text-decoration: none;
  color: rgb(192, 192, 192);
  font-size: 22px;
  text-shadow: 0 0 .3rem rgba(0,0,0,.6);
  padding: .45rem .9rem;
  display: inline-block;
  transition: .2s color ease;
}
.menu a:hover { color: #ffffff; }

#dark-nav a { color: rgb(37, 37, 37); }
#dark-nav a:hover { color: #000000; }

.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-6px);
  min-width: 220px;
  padding: 8px;
  margin: 0;
  list-style: none;
  background: rgba(211, 211, 211, 0.6);
  color: #0b1221;
  border: 1px solid rgba(0,0,0,.15);
  border-radius: 10px;
  box-shadow: 0 12px 28px rgba(0,0,0,.28), 0 2px 8px rgba(0,0,0,.15);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity .18s ease, transform .18s ease, visibility 0s linear .18s;
  z-index: 1000;
}
.has-dropdown:hover .dropdown,
.has-dropdown.open .dropdown {
  opacity: 1; visibility: visible; pointer-events: auto;
}
.dropdown a {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  color: #0b1221;
  font-size: 18px;
  text-shadow: none;
  white-space: nowrap;
}
.dropdown a:hover { color: #ffffff; }

/* ========== Desktop Nav ========== */
@media (min-width: 821px) {
  .has-dropdown { position: relative; }

  nav ul li .dropdown {
    top: 100%;
    margin-top: 8px;
    left: 50%;
    transform: translateX(-50%);
  }

  .has-dropdown:hover .dropdown,
  .has-dropdown:focus-within .dropdown,
  .has-dropdown.open .dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%);
  }

  /* right-align dropdowns that would otherwise overflow the viewport */
  .drop-right .dropdown {
    left: auto;
    right: 0;
    transform: none;
  }
  .drop-right:hover .dropdown,
  .drop-right:focus-within .dropdown,
  .drop-right.open .dropdown {
    transform: none;
  }

  .has-dropdown::after {
    content: "";
    position: absolute;
    left: 0; right: 0;
    top: 100%;
    height: 10px;
  }
}

/* ========== Mobile Nav ========== */
@media (max-width: 820px) {
  nav { padding: 12px 6% 12px 4%; }

  .logo { width: 72px; }

  .burger { display: block; }

  .menu {
    display: block;
    position: fixed;
    top: 90px; left: 0; right: 0;
    background: rgba(15,16,24,.4);
    backdrop-filter: blur(8px);
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 10px 10px 14px;
    opacity: 0;
    visibility: hidden;
    transition: opacity .4s ease;
  }

  #nav-toggle:checked ~ ul.menu {
    opacity: 1;
    visibility: visible;
  }

  .menu > li { margin: 0px 8px; }
  .menu a {
    display: block;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: 18px;
    color: #f0f0f0;
    text-shadow: none;
    background: transparent;
  }
  .menu a:hover { background: rgba(255,255,255,.08); color: #fff; }
  #dark-nav a { color: rgb(255, 255, 255); }
  #dark-nav a:hover { color: #000000; }

  #nav-toggle:checked + label.burger::before {
    transform: translateY(11px) rotate(45deg);
  }
  #nav-toggle:checked + label.burger::after {
    transform: translateY(-11px) rotate(-45deg);
  }
  #nav-toggle:checked + label.burger span { opacity: 0; }

  .has-dropdown:hover .dropdown {
    opacity: 1; visibility: visible; pointer-events: auto;
  }
  .dropdown {
    position: static;
    transform: none;
    box-shadow: none;
    border: 0;
    background: transparent;
    padding: 0;
    opacity: 1; visibility: visible; pointer-events: none;
    margin: 2px 0 0 0;
  }
  .dropdown a {
    font-size: 16px;
    padding: 7px 14px 10px 28px;
    border-radius: 8px;
    color: #e9e9e9;
  }
  #nav-toggle:checked ~ ul.menu .dropdown {
    pointer-events: auto;
  }
}

/* #endregion */