.tqb-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(var(--blur-soft)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--blur-soft)) saturate(140%);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.82));
  border-bottom: 1px solid rgba(255, 255, 255, 0.8);
}

.tqb-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
  gap: var(--space-4);
}

.tqb-branding {
  display: flex;
  align-items: center;
}

.tqb-logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.tqb-logo-mark {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 1.4rem;
  background: radial-gradient(circle at 20% 0, var(--color-accent-sky), transparent 55%),
    radial-gradient(circle at 80% 100%, var(--color-accent-terracotta), transparent 55%),
    linear-gradient(145deg, var(--color-accent-sage), var(--color-accent-sand));
  box-shadow: var(--shadow-soft);
}

.tqb-logo-text {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.9rem;
}

.tqb-nav {
  position: relative;
}

.tqb-nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.4rem;
  margin: 0;
  padding: 0;
}

.tqb-nav-item {
  position: relative;
}

.tqb-nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.35rem 0;
}

.tqb-nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-accent-terracotta), var(--color-accent-sage));
  transition: width var(--transition-normal);
}

.tqb-nav-link:hover,
.tqb-nav-link:focus-visible {
  color: var(--color-text);
}

.tqb-nav-link:hover::after,
.tqb-nav-link:focus-visible::after {
  width: 100%;
}

.tqb-nav-cta-item {
  margin-left: 0.25rem;
}

.tqb-nav-cta {
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent-sage));
  color: #ffffff;
  box-shadow: 0 12px 30px rgba(77, 159, 128, 0.4);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tqb-nav-cta::after {
  display: none;
}

.tqb-nav-cta:hover,
.tqb-nav-cta:focus-visible {
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(77, 159, 128, 0.5);
}

.tqb-nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(24, 20, 17, 0.06);
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-text);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.tqb-nav-toggle-box {
  position: relative;
  width: 1.5rem;
  height: 1.2rem;
}

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

.tqb-nav-toggle-line-top {
  top: 0;
}

.tqb-nav-toggle-line-middle {
  top: 50%;
  transform: translateY(-50%);
}

.tqb-nav-toggle-line-bottom {
  bottom: 0;
}

.tqb-nav-toggle-text {
  font-size: 0.85rem;
  font-weight: 500;
}

.tqb-header-menu-open .tqb-nav-toggle-line-top {
  top: 50%;
  transform: translateY(-50%) rotate(42deg);
}

.tqb-header-menu-open .tqb-nav-toggle-line-middle {
  opacity: 0;
}

.tqb-header-menu-open .tqb-nav-toggle-line-bottom {
  bottom: 50%;
  transform: translateY(50%) rotate(-42deg);
}

@media (max-width: 767.98px) {
  .tqb-nav {
    position: fixed;
    inset: 3.9rem 0 auto 0;
    z-index: 35;
    pointer-events: none;
  }

  .tqb-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    margin: 0 var(--space-4);
    padding: var(--space-3);
    border-radius: var(--radius-xl);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.9));
    box-shadow: var(--shadow-soft-xl);
    max-height: 0;
    overflow: hidden;
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    transition: max-height var(--transition-normal), opacity var(--transition-normal), transform var(--transition-normal);
  }

  .tqb-nav-item + .tqb-nav-item {
    border-top: 1px solid rgba(24, 20, 17, 0.04);
  }

  .tqb-nav-link {
    padding: 0.75rem 0.4rem;
  }

  .tqb-nav-cta-item {
    padding-top: 0.6rem;
  }

  .tqb-nav-cta {
    width: 100%;
    justify-content: center;
  }

  .tqb-nav-toggle {
    display: inline-flex;
  }

  .tqb-header-menu-open .tqb-nav {
    pointer-events: auto;
  }

  .tqb-header-menu-open .tqb-nav-list {
    max-height: 22rem;
    opacity: 1;
    transform: scaleY(1);
  }
}

@media (min-width: 768px) {
  .tqb-nav-toggle {
    display: none;
  }
}

@media (min-width: 1024px) {
  .tqb-header-inner {
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
  }

  .tqb-nav-list {
    gap: 1.8rem;
  }
}

.tqb-nav-link[aria-current="page"] {
  color: var(--color-text);
}

.tqb-nav-link[aria-current="page"]::after {
  width: 100%;
}