/* ============ HEADER / NAV ============ */
.site-header {
  position: sticky;
  top: 15px;
  z-index: 50;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: 99px;
  margin: 0 auto 2rem;
  max-width: var(--maxw);
  width: calc(100% - 30px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.5s ease, background 0.5s ease, border-radius 0.5s ease;
}

.site-header.scrolled {
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
  background: var(--glass-bg);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1.2rem;
}

.header-brand-area {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: .55rem;
  font-size: clamp(1.05rem, 2.4vw, 1.3rem)
}

.brand-badge {
  width: 2.1em;
  height: 2.1em;
  border-radius: 8px;
  background: var(--ink);
  color: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Reem Kufi';
  font-size: 1em;
  flex: none;
}

.nav-tools {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  border-right: 1px solid var(--line);
  padding-right: 1rem;
  margin-right: 0.2rem;
}

[dir="ltr"] .nav-tools {
  border-right: none;
  border-left: 1px solid var(--line);
  padding-right: 0;
  padding-left: 1rem;
  margin-right: 0;
  margin-left: 0.2rem;
}

.nav-links {
  display: flex;
  align-items: center;
  flex: 1;
  justify-content: space-between;
  margin-inline-start: 1.5rem;
}

.nav-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

@media (max-width: 850px) {
  .site-header {
    top: 0;
    width: 100%;
    border-radius: 0 0 24px 24px;
    margin: 0 auto 1.5rem;
  }

  .site-header .wrap {
    flex-direction: column;
    padding: 0.8rem 1rem;
    gap: 0.8rem;
  }

  .header-brand-area {
    width: 100%;
    justify-content: space-between;
  }

  .nav-tools {
    border: none;
    padding: 0;
    margin: 0;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
    margin-inline-start: 0;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-links .btn {
    flex: 1;
    min-width: max-content;
  }
  .nav-links .btn.btn-icon-only {
    flex: none;
    min-width: unset;
  }
}