/* Header-specific styles for Centr Ivaq */

.site-header {
  position: sticky;
  top: 3.4rem;
  z-index: 9998;
  padding-block: var(--space-3);
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(14, 17, 23, 0.96), rgba(14, 17, 23, 0.6));
  border-bottom: 1px solid var(--color-border-subtle);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.site-header__brand {
  display: flex;
  align-items: center;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.site-logo__mark {
  width: 32px;
  height: 32px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at 30% 0, rgba(184, 146, 74, 0.8), rgba(167, 46, 57, 0.95));
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1rem;
  box-shadow: var(--shadow-soft);
}

.site-logo__text {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-heading);
  white-space: nowrap;
}

/* Desktop nav */

.site-header__nav {
  display: flex;
  align-items: center;
}

.site-nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  font-size: var(--font-size-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.site-nav-item a {
  position: relative;
  padding-block: 0.1rem;
  color: var(--color-text-muted);
}

.site-nav-item a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  transition: width var(--duration-normal) var(--easing-standard);
}

.site-nav-item a:hover,
.site-nav-item a[aria-current="page"] {
  color: var(--color-text);
}

.site-nav-item a:hover::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(167, 46, 57, 0.56);
  background: radial-gradient(circle at top left, rgba(167, 46, 57, 0.4), rgba(14, 17, 23, 0.98));
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.75);
  color: #ffffff;
}

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

.site-nav-item--highlight a:hover {
  background: radial-gradient(circle at top left, rgba(167, 46, 57, 0.7), rgba(14, 17, 23, 1));
}

/* Mobile toggle */

.site-header__toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 32px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(245, 242, 234, 0.22);
  background: rgba(14, 17, 23, 0.9);
  cursor: pointer;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 6px;
  padding: 0;
}

.site-header__toggle-bar {
  width: 18px;
  height: 1.5px;
  border-radius: 99px;
  background-color: var(--color-text);
  transition: transform var(--duration-normal) var(--easing-standard),
    opacity var(--duration-fast) var(--easing-standard);
}

/* Open state animation */

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(1) {
  transform: translateY(3px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .site-header__toggle-bar:nth-child(2) {
  transform: translateY(-3px) rotate(-45deg);
}

/* Responsive behavior */

@media (max-width: 960px) {
  .site-header__inner {
    gap: var(--space-3);
  }

  .site-header__toggle {
    display: inline-flex;
  }

  .site-header__nav {
    position: fixed;
    inset-inline: 0;
    top: calc(0.4rem + 56px); /* 21+ bar + header approx */
    background: radial-gradient(circle at top, rgba(184, 146, 74, 0.16), transparent 60%),
      rgba(5, 6, 9, 0.98);
    border-top: 1px solid rgba(245, 242, 234, 0.12);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-normal) var(--easing-standard),
      transform var(--duration-normal) var(--easing-standard);
  }

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

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

  .site-nav-item--highlight a {
    align-self: stretch;
    text-align: center;
    width: 100%;
  }
}

@media (max-width: 600px) {
  .site-logo__text {
    font-size: 0.9rem;
    letter-spacing: 0.14em;
  }
}

/* Helper to prevent body scroll when mobile menu is open */

body.nav-open {
  overflow: hidden;
}