/* ===== Header ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 60;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--unit) var(--margin-mobile);
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(26, 89, 184, 0.05);
}

.site-header__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: var(--headline-lg-mobile-size);
  font-weight: 600;
  color: var(--color-spiritual-blue-deep);
  transition: color 0.2s ease;
}

.site-header__brand:hover {
  color: var(--color-saffron-energetic);
}

.site-header__logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

/* Nav: off-canvas panel on mobile/tablet, inline on desktop */
.site-header__nav {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: min(320px, 80vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  padding: 96px 32px 32px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.08);
  transform: translateX(100%);
  transition: transform 0.3s ease;
  z-index: 60;
}

.site-header__nav.is-open {
  transform: translateX(0);
}

.site-header__nav-link {
  font-family: var(--font-sans);
  font-size: var(--label-md-size);
  font-weight: var(--label-md-weight);
  letter-spacing: var(--label-md-tracking);
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
  padding: 12px 0;
  border-bottom: 1px solid var(--color-surface-container-highest);
  transition: color 0.2s ease;
}

.site-header__nav-link:hover,
.site-header__nav-link.is-active {
  color: var(--color-saffron-energetic);
}

/* Scrim behind off-canvas nav */
.site-header__scrim {
  position: fixed;
  inset: 0;
  background: rgba(27, 28, 25, 0.3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 55;
}

.site-header__scrim.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* Burger button */
.site-header__menu-btn {
  position: relative;
  width: 40px;
  height: 40px;
  background: none;
  z-index: 61;
}

.site-header__menu-icon,
.site-header__menu-icon::before,
.site-header__menu-icon::after {
  content: '';
  position: absolute;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--color-primary);
  transition: transform 0.25s ease, opacity 0.25s ease, top 0.25s ease;
}

.site-header__menu-icon {
  top: 19px;
}

.site-header__menu-icon::before {
  top: -8px;
}

.site-header__menu-icon::after {
  top: 8px;
}

.site-header__menu-btn[aria-expanded="true"] .site-header__menu-icon {
  background: transparent;
}

.site-header__menu-btn[aria-expanded="true"] .site-header__menu-icon::before {
  top: 0;
  transform: rotate(45deg);
  background: var(--color-saffron-energetic);
}

.site-header__menu-btn[aria-expanded="true"] .site-header__menu-icon::after {
  top: 0;
  transform: rotate(-45deg);
  background: var(--color-saffron-energetic);
}

/* Desktop: inline nav, no burger */
@media (min-width: 1024px) {
  .site-header__nav {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    height: auto;
    width: auto;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 32px;
    padding: 0;
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
  }

  .site-header__nav.is-open {
    transform: translate(-50%, -50%);
  }

  .site-header__nav-link {
    border-bottom: none;
    padding: 0;
  }

  .site-header__menu-btn,
  .site-header__scrim {
    display: none;
  }
}