/* Header-specific styles for PIP’S TRANSPORT LTD */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
}

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

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: #f9fafb;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: var(--radius-md);
  background: radial-gradient(circle at 30% 0, rgba(37, 99, 235, 0.8), rgba(15, 23, 42, 0.98));
  color: #e5e7eb;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--shadow-md);
}

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

.brand-title {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-tagline {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

/* Navigation layout */

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

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-item-highlight {
  margin-left: var(--space-2);
}

.nav-link-cta {
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(37, 99, 235, 0.7);
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.25), rgba(15, 23, 42, 0.96));
  color: #e5e7eb;
  font-size: var(--font-size-sm);
}

.nav-link-cta:hover {
  background: radial-gradient(circle at top left, rgba(37, 99, 235, 0.45), rgba(15, 23, 42, 0.98));
}

/* Mobile nav toggle */

.nav-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.5);
  color: var(--color-text);
  background-color: rgba(15, 23, 42, 0.96);
  cursor: pointer;
}

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

.nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.19rem;
}

.nav-toggle-bar {
  width: 1.1rem;
  height: 2px;
  border-radius: 999px;
  background-color: #e5e7eb;
  transition: transform var(--transition-fast), opacity var(--transition-fast), background-color var(--transition-fast);
}

.nav-toggle-text {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* Toggle animation for open state */

.nav-toggle.is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

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

.nav-toggle.is-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* Responsive behaviour */

@media (max-width: 768px) {
  .nav-toggle {
    display: inline-flex;
  }

  .primary-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: linear-gradient(to bottom, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.96));
    border-bottom: 1px solid rgba(148, 163, 184, 0.26);
    transform-origin: top;
    transform: scaleY(0.95);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal);
  }

  .primary-nav.is-open {
    opacity: 1;
    transform: scaleY(1);
    pointer-events: auto;
  }

  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--space-4) var(--space-4);
    gap: var(--space-2);
  }

  .nav-item-highlight {
    margin-left: 0;
    margin-top: var(--space-2);
    width: 100%;
  }

  .nav-link-cta {
    display: inline-flex;
    justify-content: center;
    width: 100%;
  }
}

@media (max-width: 480px) {
  .brand-tagline {
    display: none;
  }
}

@media (min-width: 769px) {
  .primary-nav {
    position: static;
  }
}