.tp-header-shell {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100vw;
  margin-inline: calc(50% - 50vw);
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(8, 8, 8, 0.98), rgba(8, 8, 8, 0.94));
  border-bottom: 1px solid var(--color-border);
}

.tp-header-inner {
  max-width: var(--layout-max-width);
  margin-inline: auto;
  padding-inline: var(--layout-gutter);
  height: var(--header-height-desktop);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.tp-header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.tp-header-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}

.tp-header-logo-mark {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(245, 158, 11, 0.7);
  background: radial-gradient(circle at 20% 0, rgba(245, 158, 11, 0.85), transparent 55%), radial-gradient(circle at 100% 120%, rgba(15, 23, 42, 1), transparent 60%), #020617;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Barlow Condensed", var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.tp-header-logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.tp-header-logo-primary {
  font-family: "Barlow Condensed", var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.tp-header-logo-secondary {
  font-family: "Barlow", var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.tp-header-21plus {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: 0.9rem;
  height: 32px;
  border-radius: 999px;
  background-color: var(--color-21plus-bg);
  color: var(--color-21plus-text);
  font-family: "Barlow Condensed", var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 0 0 1px rgba(64, 0, 0, 0.9), 0 16px 32px rgba(0, 0, 0, 0.9);
}

.tp-header-21plus span {
  display: block;
}

.tp-header-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-6);
}

.tp-header-nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.tp-header-nav-item a {
  position: relative;
  font-family: "Barlow Condensed", var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding-block: 0.35rem;
}

.tp-header-nav-item a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-primary), transparent);
  transform-origin: center;
  transform: scaleX(0.5);
  opacity: 0;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.tp-header-nav-item a:hover,
.tp-header-nav-item a:focus-visible {
  color: var(--color-primary);
}

.tp-header-nav-item a:hover::after,
.tp-header-nav-item a:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.tp-header-nav-accent a {
  color: var(--color-primary);
}

.tp-header-nav-accent a::after {
  opacity: 1;
  transform: scaleX(1);
}

.tp-header-nav-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.tp-header-nav-note {
  font-family: "Barlow", var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.tp-header-nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  border: 1px solid rgba(245, 158, 11, 0.7);
  font-family: "Barlow Condensed", var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: radial-gradient(circle at 0 0, rgba(245, 158, 11, 0.28), transparent 55%), #020617;
}

.tp-header-nav-cta:hover,
.tp-header-nav-cta:focus-visible {
  border-color: var(--color-primary);
}

.tp-nav-toggle {
  display: none;
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex-shrink: 0;
  background-color: #050505;
  cursor: pointer;
}

.tp-nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

.tp-nav-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.tp-nav-open .tp-nav-toggle-bar:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.tp-nav-open .tp-nav-toggle-bar:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

.tp-nav-open .tp-nav-toggle-bar {
  background-color: var(--color-primary);
}

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

@media (max-width: 960px) {
  .tp-header-inner {
    height: var(--header-height-mobile);
  }

  .tp-header-nav-note {
    display: none;
  }
}

@media (max-width: 768px) {
  .tp-header-inner {
    padding-block: 0.5rem;
  }

  .tp-header-nav {
    position: fixed;
    inset-inline: 0;
    top: var(--header-height-mobile);
    background: linear-gradient(to bottom, rgba(10, 10, 10, 0.98), rgba(10, 10, 10, 0.98));
    border-top: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
    padding: var(--space-4) var(--layout-gutter) var(--space-6);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    transition: opacity var(--transition-base), transform var(--transition-base);
  }

  .tp-header-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  .tp-header-nav-item a {
    width: 100%;
    padding-block: 0.7rem;
    border-radius: var(--radius-sm);
    padding-inline: 0.5rem;
    border: 1px solid transparent;
  }

  .tp-header-nav-item a:hover,
  .tp-header-nav-item a:focus-visible {
    border-color: var(--color-border);
    background-color: #050505;
  }

  .tp-header-nav-item a::after {
    display: none;
  }

  .tp-header-nav-meta {
    justify-content: flex-start;
  }

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

  .tp-header-brand {
    flex: 1;
    min-width: 0;
  }

  .tp-nav-toggle {
    display: inline-flex;
    margin-left: auto;
  }
}

@media (max-width: 540px) {
  .tp-header-logo-secondary {
    display: none;
  }

  .tp-header-inner {
    gap: var(--space-2);
  }

  .tp-header-21plus {
    height: 28px;
    padding-inline: 0.75rem;
    font-size: 0.7rem;
  }
}