/* Header-specific styles for CIKEY LTD */

.site-header {
  /* visual properties mostly defined in base.css; extend where needed */
}

.header-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.header-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.header-logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.75rem;
  background: radial-gradient(circle at 20% 20%, #1d4ed8, #0b3c78 55%, #020617 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 700;
  font-size: var(--font-size-lg);
  box-shadow: var(--shadow-md);
}

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

.header-logo-title {
  font-weight: 600;
  letter-spacing: 0.08em;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  color: var(--color-gray-900);
}

.header-logo-tagline {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Navigation layout */

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

.header-nav-list {
  align-items: center;
}

.header-cta {
  font-size: var(--font-size-sm);
}

/* Mobile nav toggle */

.header-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.7);
  background-color: #ffffff;
  cursor: pointer;
}

.header-toggle-bar {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-gray-800);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.header-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Mobile-first behaviour */

@media (max-width: 767px) {
  .header-toggle {
    display: inline-flex;
  }

  .header-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: rgba(245, 247, 250, 0.98);
    border-bottom: 1px solid rgba(148, 163, 184, 0.35);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3) var(--space-4) var(--space-4);
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
  }

  .header-nav.header-nav--open {
    display: flex;
  }

  .header-nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
  }

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

  /* Toggle animation */
  .header-toggle[aria-expanded="true"] .header-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .header-toggle[aria-expanded="true"] .header-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .header-toggle[aria-expanded="true"] .header-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* Desktop adjustments */

@media (min-width: 768px) {
  .header-nav {
    position: static;
  }

  .header-cta {
    margin-left: var(--space-4);
  }
}

/* High contrast focus for nav links */

.header-nav .nav-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-md);
  padding-inline: 0.25rem;
}