:root {
  --header-height: 76px;
  --menu-accent: #b8da3c;
}

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 clamp(22px, 5vw, 78px);
  color: #fff;
  background: rgb(20 25 22 / .96);
  box-shadow: 0 8px 38px rgb(0 0 0 / .18);
  backdrop-filter: blur(12px);
  transition: background .3s, box-shadow .3s;
}

.site-header.menu-home {
  background: linear-gradient(to bottom, rgb(13 18 15 / .68), transparent);
  box-shadow: none;
  backdrop-filter: none;
}

.site-header.menu-home.is-scrolled {
  background: rgb(20 25 22 / .94);
  box-shadow: 0 8px 40px #0003;
  backdrop-filter: blur(12px);
}

.site-header a {
  color: inherit;
  text-decoration: none;
}

.site-header button {
  color: inherit;
  font: inherit;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 42px);
}

.site-header nav a {
  position: relative;
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.site-header nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 2px;
  background: var(--menu-accent);
  transform: scaleX(0);
  transition: transform .2s;
}

.site-header nav a:hover::after,
.site-header nav a:focus-visible::after { transform: scaleX(1); }

.menu-logo {
  width: 50px;
  height: 50px;
  margin-left: clamp(20px, 3vw, 42px);
}

.menu-logo img {
  display: block;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  filter: drop-shadow(3px 4px 0 rgb(0 0 0 / .35));
}

.menu-home .menu-logo {
  width: 0;
  margin-left: 0;
  opacity: 0;
  transform: translateY(-18px) scale(.7);
  pointer-events: none;
  transition: width .35s, margin-left .35s, opacity .25s, transform .35s;
}

.menu-home.is-scrolled .menu-logo {
  width: 50px;
  margin-left: clamp(20px, 3vw, 42px);
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 50%;
  background: rgb(255 255 255 / .12);
}

.menu-toggle i {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: #fff;
}

.nav-projects {
  position: relative;
  flex: 0 0 auto;
}

.nav-projects summary {
  cursor: pointer;
  list-style: none;
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.nav-projects summary::marker,
.nav-projects summary::-webkit-details-marker {
  display: none;
  content: "";
}

.nav-projects summary::after {
  content: "\25BE";
  display: inline-block;
  margin-left: .45em;
  color: var(--menu-accent);
  transition: transform .2s;
}

.nav-projects[open] summary::after { transform: rotate(180deg); }

.project-submenu {
  position: absolute;
  z-index: 110;
  top: calc(100% + 14px);
  left: 50%;
  min-width: 210px;
  padding: 8px;
  background: rgb(20 25 22 / .98);
  border: 1px solid rgb(255 255 255 / .1);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgb(0 0 0 / .35);
  transform: translateX(-50%);
}

.project-submenu a {
  display: block;
  padding: 9px 12px;
  white-space: nowrap;
}

.project-submenu a::after { display: none; }
.project-submenu a:hover { color: var(--menu-accent); }

@media (max-width: 760px) {
  :root { --header-height: 66px; }

  .site-header {
    justify-content: space-between;
    padding: 0 18px;
  }

  .site-header.menu-home { background: #141916ed; }
  .menu-toggle { z-index: 2; display: block; }

  .nav-projects { width: 100%; }
  .nav-projects summary { font-size: 1.55rem; }

  .project-submenu {
    position: static;
    width: 100%;
    min-width: 0;
    padding: 8px 0 0 18px;
    background: transparent;
    border: 0;
    box-shadow: none;
    transform: none;
  }

  .site-header .project-submenu a {
    padding: 7px 0;
    font-size: 1.05rem;
  }

  .site-header nav {
    position: fixed;
    inset: 0;
    height: 100svh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    overflow-y: auto;
    padding: calc(var(--header-height) + 48px) 35px 60px;
    background: #18221b;
    transform: translateY(-110%);
    transition: transform .3s;
  }

  .site-header nav.nav-open { transform: none; }
  .site-header nav a { font-size: 1.55rem; }

  .menu-logo {
    z-index: 2;
    width: 43px;
    height: 43px;
    margin-left: auto;
  }

  .menu-logo img { width: 43px; height: 43px; }

  .menu-home .menu-logo {
    width: 0;
    height: 43px;
    margin-left: 0;
  }

  .menu-home.is-scrolled .menu-logo {
    width: 43px;
    height: 43px;
    margin-left: auto;
  }
}