/* public/css/header.css */

.site-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #111 0%, #0c0c0c 100%);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
}

.brand__mark {
  width: 30px;
  height: 30px;
  background: var(--acid);
  clip-path: polygon(20% 0%, 80% 0%, 100% 30%, 100% 100%, 0% 100%, 0% 30%);
  position: relative;
  flex-shrink: 0;
  box-shadow: 0 0 16px var(--acid-glow);
}

.brand__mark::after {
  content: '';
  position: absolute;
  inset: 5px;
  background: #0c0c0c;
  clip-path: polygon(20% 0%, 80% 0%, 100% 30%, 100% 100%, 0% 100%, 0% 30%);
}

.brand__text span {
  color: var(--acid);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}

.site-nav__link {
  color: var(--fg-dim);
  font-weight: 600;
  transition: color 0.15s;
  white-space: nowrap;
}

.site-nav__link:hover {
  color: var(--fg);
}

.site-nav__user {
  color: var(--fg-faint);
  font-family: var(--font-mono);
  font-size: 13px;
}

.site-nav__user strong {
  color: var(--acid);
  font-weight: 600;
}

@media (max-width: 640px) {
  .site-header__inner {
    flex-wrap: wrap;
    gap: 12px;
  }
  .site-nav {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
    gap: 14px;
  }
}