.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
}

.nav-bar {
  width: 100%;
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 22px;
}

.brand {
  color: #f5f7fb;
  text-decoration: none;
  font-family: "Inconsolata", monospace;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
  line-height: 1;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 22px;
  flex-wrap: nowrap;
}
.main-nav a {
  position: relative;
  padding: 6px 0;
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  text-transform: uppercase;
  font-family: "Cabinet Grotesk", "Satoshi", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 1px;
  background: #d6ff57;
  transition: width 180ms ease;
}

.main-nav a:hover {
  color: #ffffff;
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0;
  color: rgba(255, 255, 255, 0.92);
  text-transform: uppercase;
  font-family: "Cabinet Grotesk", "Satoshi", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.mobile-menu {
  display: none;
  border-top: 1px solid rgba(255, 255, 255, 0.10);
  background: rgba(0, 0, 0, 0.94);
  padding: 14px 20px 18px;
}

.mobile-menu.is-open {
  display: grid;
  gap: 12px;
}

.mobile-menu a {
  padding: 8px 0;
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  text-transform: uppercase;
  font-family: "Cabinet Grotesk", "Satoshi", sans-serif;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
}

@media (max-width: 1180px) {
  .nav-bar {
    padding: 0 20px;
  }

  .main-nav {
    gap: 18px;
  }

  .brand {
    font-size: 21px;
  }

  .main-nav a {
    font-size: 12px;
  }
}

@media (max-width: 980px) {
  .main-nav {
    display: none;
  }

  .nav-toggle {
    display: inline-block;
  }

  .brand {
    font-size: 18px;
    max-width: 70%;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .nav-bar {
    min-height: 58px;
  }
}

@media (max-width: 640px) {
  .nav-bar {
    padding: 0 16px;
  }

  .brand {
    font-size: 16px;
    letter-spacing: 0.02em;
  }

  .nav-toggle,
  .mobile-menu a {
    font-size: 12px;
  }
}