/* Header styles for NeatSpaceCollective */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px);
  background: linear-gradient(to bottom, rgba(5, 6, 7, 0.94), rgba(5, 6, 7, 0.88), rgba(5, 6, 7, 0.82));
  border-bottom: 1px solid var(--color-border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

/* Brand */

.header-brand {
  flex: 1 1 auto;
  min-width: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-6);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
}

.brand-link:focus-visible {
  border-color: var(--color-amber);
  outline: none;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 0, rgba(200, 138, 43, 0.5) 0, transparent 50%),
    radial-gradient(circle at 70% 100%, rgba(47, 181, 124, 0.4) 0, transparent 55%),
    linear-gradient(135deg, #050607, #111315);
  box-shadow: 0 0 0 1px rgba(200, 138, 43, 0.4), var(--shadow-soft);
  position: relative;
}

.brand-chip {
  position: absolute;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 999px;
}

.brand-chip--primary {
  top: 22%;
  left: 24%;
  background-color: var(--color-primary-strong);
}

.brand-chip--accent {
  bottom: 18%;
  right: 20%;
  background-color: var(--color-amber);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--gray-50);
}

.brand-tagline {
  font-size: var(--font-size-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Navigation */

.site-nav {
  flex: 0 1 auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-item {
  list-style: none;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.1rem;
  font-size: var(--font-size-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-amber), var(--color-primary-strong));
  transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link:focus-visible::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--gray-50);
}

.header-cta {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
}

.header-cta-button {
  font-size: var(--font-size-xs);
  padding-inline: 1.4rem;
}

/* Mobile nav toggle */

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(0, 0, 0, 0.4);
  color: var(--gray-50);
  cursor: pointer;
}

.nav-toggle-bar {
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-100);
  transition: transform var(--transition-fast), opacity var(--transition-fast), width var(--transition-fast);
}

.nav-toggle:focus-visible {
  outline: var(--focus-ring-width) solid var(--focus-ring-color);
  outline-offset: 2px;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(42deg);
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.nav-toggle.is-active .nav-toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-42deg);
}

/* Mobile layout */

@media (max-width: 768px) {
  .header-inner {
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
  }

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

  .site-nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 3.5rem;
    background: radial-gradient(circle at top, rgba(24, 27, 30, 0.96) 0, rgba(5, 6, 7, 0.98) 55%, #020203 100%);
    border-bottom: 1px solid var(--color-border-subtle);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-12) var(--space-8) var(--space-8);
  }

  .nav-link {
    font-size: var(--font-size-base);
  }

  .header-cta {
    display: none;
  }
}

/* Medium and up: show full nav */

@media (min-width: 769px) {
  .site-nav {
    position: static;
    transform: none !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    background: transparent;
    border-bottom: none;
  }

  .nav-list {
    padding: 0;
  }
}