@import url('/assets/css/responsive.css');

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  width: 100%;
  background: linear-gradient(to bottom, rgba(9, 11, 15, 0.98), rgba(9, 11, 15, 0.94) 60%, rgba(9, 11, 15, 0.85));
  border-bottom: 1px solid rgba(37, 42, 51, 0.9);
  backdrop-filter: blur(20px);
}

.site-header > .rt-ribbon .rt-ribbon__inner {
  min-height: 28px;
  justify-content: center;
  padding: 0.18rem 1rem;
  overflow: hidden;
  font-size: 0.65rem;
  line-height: 1;
  letter-spacing: 0.14em;
}

.site-header > .rt-ribbon .rt-ribbon__item {
  min-width: 0;
  max-width: 100%;
  gap: 0.45rem;
}

.site-header > .rt-ribbon .rt-ribbon__badge {
  flex: 0 0 auto;
  padding: 0.08rem 0.45rem;
}

.site-header > .rt-ribbon .rt-ribbon__message {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-header__inner {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding-inline: var(--space-4);
}

.main-nav__links-wrapper {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.main-nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--font-size-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.nav-toggle {
  position: relative;
  z-index: 2;
  flex: 0 0 auto;
  flex-direction: column;
}

.nav-toggle span {
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle.is-active span:nth-child(1) {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle.is-active span:nth-child(2) {
  transform: translateY(-3px) rotate(-45deg);
}

.main-nav__link:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: 999px;
  padding-inline: 0.35rem;
  margin-inline: -0.35rem;
}

@media (min-width: 841px) {
  .nav-toggle { display: none; }
  .main-nav__links-wrapper {
    display: flex !important;
    position: static;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: none;
    box-shadow: none;
    border: 0;
    background: none;
  }
}

@media (max-width: 840px) {
  .main-nav {
    min-width: 0;
    padding-block: 0.75rem;
  }

  .rt-brand {
    min-width: 0;
  }

  .rt-brand__text {
    min-width: 0;
  }

  .rt-brand__name {
    font-size: 1rem;
  }

  .rt-brand__tagline {
    max-width: 18rem;
    line-height: 1.45;
  }

  .main-nav__links-wrapper {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: rgba(9, 11, 15, 0.98);
    border-bottom: 1px solid rgba(37, 42, 51, 0.9);
    box-shadow: 0 18px 45px rgba(0, 0, 0, 0.9);
    transform: scaleY(0.96);
    transform-origin: top center;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
  }

  .main-nav__links-wrapper.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: scaleY(1);
  }

  .main-nav__links {
    display: flex;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1rem 1rem;
  }

  .main-nav__link {
    display: block;
    width: 100%;
    padding: 0.75rem 0;
  }
}

@media (max-width: 520px) {
  .site-header > .rt-ribbon .rt-ribbon__inner {
    min-height: 26px;
    padding-inline: 0.65rem;
    font-size: 0.58rem;
    letter-spacing: 0.1em;
  }

  .site-header > .rt-ribbon .rt-ribbon__message {
    max-width: calc(100vw - 4.5rem);
  }

  .site-header__inner {
    padding-inline: 1rem;
  }

  .rt-brand__mark {
    width: 38px;
    height: 38px;
  }

  .rt-brand__tagline {
    max-width: 12rem;
    font-size: 0.61rem;
    letter-spacing: 0.14em;
  }
}

@media (max-width: 360px) {
  .rt-brand__tagline { display: none; }
}