/* Header styles for Corvin Po HU */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.82));
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
  gap: var(--space-16);
}

.header-brand {
  display: flex;
  align-items: center;
  min-width: 0;
}

.header-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
}

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 30% 70% 65% 35% / 40% 30% 70% 60%;
  background: radial-gradient(circle at 20% 0, #fed7aa 0, #f97316 32%, #7c2d12 100%);
  box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.9), 0 18px 40px rgba(0, 0, 0, 0.7);
  position: relative;
}

.logo-mark::after {
  content: "";
  position: absolute;
  inset: 22% 22% auto auto;
  width: 40%;
  height: 40%;
  border-radius: 999px;
  background: rgba(254, 243, 199, 0.9);
  opacity: 0.75;
}

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

.logo-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

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

/* Navigation */

.header-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-16);
}

.nav-link {
  position: relative;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: 0.2rem 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.3rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #fed7aa, #f97316);
  transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
}

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

.nav-cta .btn {
  white-space: nowrap;
}

/* Mobile toggle */

.header-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text);
}

.header-toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-gray-200);
  transition: transform var(--transition-fast), opacity var(--transition-fast), width var(--transition-fast);
}

.header-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Mobile menu open state */

.site-header.is-menu-open .header-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.site-header.is-menu-open .header-toggle-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.site-header.is-menu-open .header-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Responsive layout */

@media (max-width: 768px) {
  .header-inner {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

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

  .header-nav {
    position: fixed;
    inset: 56px 0 auto 0;
    background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.96));
    border-bottom: 1px solid rgba(148, 163, 184, 0.3);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-16);
    gap: var(--space-12);
  }

  .nav-cta {
    width: 100%;
    margin-top: var(--space-8);
  }

  .nav-cta .btn {
    width: 100%;
    justify-content: center;
  }
}

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

/* Respect reduced motion */

@media (prefers-reduced-motion: reduce) {
  .header-nav {
    transition: none;
  }
  .header-toggle-bar {
    transition: none;
  }
}