/* Header-specific styles for Programter99 */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(250, 247, 242, 0.97), rgba(250, 247, 242, 0.9));
  border-bottom: 1px solid rgba(216, 195, 165, 0.6);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.9rem;
}

.site-header__branding {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo {
  display: inline-flex;
  flex-direction: column;
  gap: 0.05rem;
}

.site-logo__primary {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-heading);
}

.site-logo__tagline {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* Primary navigation */
.site-nav {
  display: flex;
  align-items: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__item a {
  position: relative;
  padding-bottom: 0.35rem;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-muted);
}

.site-nav__item a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-decor), var(--color-primary));
  transition: width var(--transition-normal);
}

.site-nav__item a:hover,
.site-nav__item a:focus-visible,
.site-nav__item a[aria-current="page"] {
  color: var(--color-heading);
}

.site-nav__item a:hover::after,
.site-nav__item a:focus-visible::after,
.site-nav__item a[aria-current="page"]::after {
  width: 100%;
}

.site-nav__item--highlight a {
  padding-inline: 1.25rem;
  padding-block: 0.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(216, 195, 165, 0.9);
  background: radial-gradient(circle at 0 0, rgba(216, 195, 165, 0.22) 0, transparent 45%);
}

.site-nav__item--highlight a::after {
  display: none;
}

.site-nav__item--highlight a:hover,
.site-nav__item--highlight a:focus-visible {
  background: radial-gradient(circle at 0 0, rgba(216, 195, 165, 0.32) 0, transparent 55%);
}

/* Mobile toggle */
.site-header__toggle {
  display: none;
  position: relative;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid rgba(216, 195, 165, 0.9);
  background-color: rgba(255, 255, 255, 0.85);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.site-header__toggle-bar {
  position: relative;
  width: 1.25rem;
  height: 1px;
  background-color: var(--color-heading);
  transition: transform var(--transition-normal), opacity var(--transition-fast);
}

.site-header__toggle-bar + .site-header__toggle-bar {
  margin-top: 0.3rem;
}

.site-header__toggle:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.7), 0 0 0 4px var(--focus-ring-color);
}

/* Open state */
.site-header__toggle.is-open .site-header__toggle-bar:first-child {
  transform: translateY(0.15rem) rotate(45deg);
}

.site-header__toggle.is-open .site-header__toggle-bar:last-child {
  transform: translateY(-0.15rem) rotate(-45deg);
}

/* Responsive behaviour */
@media (max-width: 960px) {
  .site-header__toggle {
    display: inline-flex;
    flex-direction: column;
  }

  .site-nav {
    position: fixed;
    inset-inline: 0;
    top: 3.8rem;
    background: linear-gradient(to bottom, rgba(250, 247, 242, 0.98), rgba(250, 247, 242, 0.96));
    border-bottom: 1px solid rgba(216, 195, 165, 0.7);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  }

  .site-nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4) var(--container-padding-x) var(--space-6);
  }

  .site-nav__item--highlight a {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .site-logo__primary {
    font-size: 1.05rem;
  }

  .site-logo__tagline {
    display: none;
  }
}