/* ═══ 5. HEADER & NAVIGATION ═════════════════════════════════════════════ */

.site-header {
  background: var(--bkg-dark);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-6);
  height: 60px;
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

/* Brand */
.brand-link {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  text-decoration: none;
  flex-shrink: 0;
}
.brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 2px;
  color: var(--bkg-white);
}
.brand-dot {
  color: var(--accent);
  font-size: 1.1rem;
  line-height: 1;
}
.brand-link:hover .brand-name { color: var(--bkg-white); }
.brand-link:hover .brand-dot { color: var(--accent); }

.brand-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

/* Teal rule under header */
.accent-rule {
  height: 3px;
  background: var(--accent);
}

/* Nav */
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--sp-6);
  margin-left: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.3px;
  transition: color var(--ease-fast);
  white-space: nowrap;
}
.nav-links a:hover {
  color: var(--bkg-white);
}

/* Nav CTA button */
.btn-nav-cta {
  background: var(--accent) !important;
  color: var(--bkg-white) !important;
  padding: 7px 18px !important;
  border-radius: var(--radius-pill) !important;
  font-weight: 600 !important;
  font-size: 0.78rem !important;
  transition: background var(--ease-fast), box-shadow var(--ease-fast) !important;
}
.btn-nav-cta:hover {
  background: var(--accent-hover) !important;
  box-shadow: var(--shadow-accent) !important;
  color: var(--bkg-white) !important;
}

/* State selector dropdown */
.nav-state-selector {
  position: relative;
}

.state-selector-btn {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  background: none;
  border: 1px solid var(--border-on-dark-subtle);
  border-radius: var(--radius-sm);
  padding: 5px 12px;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--ease-fast), color var(--ease-fast);
}
.state-selector-btn:hover {
  border-color: var(--text-muted);
  color: var(--bkg-white);
}

.state-selector-arrow {
  font-size: 0.65rem;
  transition: transform var(--ease-fast);
}
.state-selector-btn[aria-expanded="true"] .state-selector-arrow {
  transform: rotate(180deg);
}

.state-selector-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bkg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 160px;
  padding: var(--sp-1) 0;
  display: none;
  z-index: 200;
}
.state-selector-dropdown.is-open {
  display: block;
}

.state-selector-dropdown a {
  display: block;
  padding: 8px 16px;
  font-size: 0.85rem;
  color: var(--text-primary);
  transition: background var(--ease-fast), color var(--ease-fast);
}
.state-selector-dropdown a:hover {
  background: var(--accent-glow);
  color: var(--accent);
}
.state-selector-dropdown a.is-current {
  color: var(--accent);
  font-weight: 600;
}
.state-selector-dropdown a.is-current::after {
  content: ' ✓';
  font-size: 0.75rem;
}

/* Hamburger toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-2);
  margin-left: auto;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--bkg-white);
  border-radius: 1px;
  transition: transform var(--ease-base), opacity var(--ease-base);
}

/* Hamburger animation when open */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}




/* ── Header Responsive ────────────────────────────────────────────────── */

/* Mobile: 640px and below */
@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 63px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bkg-dark-90);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: var(--sp-6);
    gap: var(--sp-2);
    transform: translateX(100%);
    transition: transform var(--ease-base);
    z-index: 99;
  }
  .main-nav.is-open {
    transform: translateX(0);
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-links a {
    padding: var(--sp-3) var(--sp-4);
    font-size: 1rem;
    border-bottom: 1px solid var(--border-on-dark);
  }

  .btn-nav-cta {
    text-align: center !important;
    margin-top: var(--sp-2) !important;
    padding: 12px 18px !important;
    font-size: 0.9rem !important;
    border-radius: var(--radius-md) !important;
  }

  .nav-state-selector {
    padding-top: var(--sp-4);
    border-top: 1px solid var(--border-on-dark);
  }
  .state-selector-btn {
    width: 100%;
    justify-content: space-between;
    padding: var(--sp-3) var(--sp-4);
    font-size: 0.9rem;
  }
  .state-selector-dropdown {
    position: static;
    box-shadow: none;
    border: none;
    background: transparent;
    padding: 0;
  }
  .state-selector-dropdown.is-open {
    display: flex;
    flex-direction: column;
  }
  .state-selector-dropdown a {
    color: var(--text-muted);
    padding: var(--sp-2) var(--sp-6);
    font-size: 0.9rem;
  }
  .state-selector-dropdown a:hover {
    background: transparent;
    color: var(--accent);
  }
}