/* Header-specific styles for DAILY FASHION MIX */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: rgba(248, 244, 240, 0.96);
  border-bottom: 1px solid rgba(148, 163, 184, 0.24);
}

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

.site-header__branding {
  display: flex;
  flex-direction: column;
}

.site-header__logo {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}

.site-header__tagline {
  font-family: var(--font-sans);
  font-size: var(--font-size-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray-500);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-sm);
}

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

.site-nav__item a {
  position: relative;
  padding: 0.25rem 0;
}

.site-nav__item a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-text);
  transition: width var(--transition-normal);
}

.site-nav__item a:hover::after,
.site-nav__item a.is-active::after {
  width: 100%;
}

/* Burger button */
.burger {
  display: none;
  width: 32px;
  height: 24px;
  position: relative;
  cursor: pointer;
}

.burger span {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 999px;
  transition: transform var(--transition-normal),
              opacity var(--transition-fast),
              top var(--transition-normal),
              bottom var(--transition-normal);
}

.burger span:nth-child(1) { top: 0; }
.burger span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.burger span:nth-child(3) { bottom: 0; }

.burger.is-open span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.burger.is-open span:nth-child(2) {
  opacity: 0;
}

.burger.is-open span:nth-child(3) {
  bottom: auto;
  top: 50%;
  transform: translateY(-50%) rotate(-45deg);
}

@media (max-width: 960px) {
  .burger {
    display: block;
  }

  .site-nav {
    position: absolute;
    inset-inline: 0;
    top: var(--nav-height);
    background: rgba(248, 244, 240, 0.98);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4);
    border-bottom: 1px solid rgba(148, 163, 184, 0.2);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

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

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

@media (max-width: 640px) {
  .site-header__tagline {
    display: none;
  }
}