/* Ink Atelier Header Styles */

.ia-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 6, 7, 0.96), rgba(5, 6, 7, 0.88));
  border-bottom: 1px solid var(--color-border-subtle);
}

.ia-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 0.9rem;
  gap: var(--space-10);
}

/* Brand */

.ia-header__brand {
  display: flex;
  align-items: center;
}

.ia-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--gray-50);
}

.ia-header__logo-link::after {
  display: none;
}

.ia-header__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: radial-gradient(circle at 30% 20%, rgba(194, 155, 111, 0.26), transparent 55%);
  font-size: var(--text-sm);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.ia-header__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* Navigation */

.ia-header__nav {
  display: flex;
}

.ia-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-size: var(--text-sm);
}

.ia-header__nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-inline: 0.15rem;
  padding-block: 0.25rem;
  color: var(--color-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.ia-header__nav-link::after {
  height: 2px;
  bottom: -0.15rem;
}

.ia-header__nav-link:hover {
  color: var(--gray-50);
}

.ia-header__nav-item--cta {
  margin-left: var(--space-4);
}

.ia-header__nav-link--cta {
  border-radius: var(--radius-pill);
  padding-inline: 0.9rem;
  padding-block: 0.45rem;
  background-color: var(--color-primary);
  color: #060708;
  font-weight: 500;
}

.ia-header__nav-link--cta::after {
  display: none;
}

.ia-header__nav-link--cta:hover {
  background-color: var(--color-primary-strong);
}

/* Mobile toggle */

.ia-header__toggle {
  display: none;
  position: relative;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(0, 0, 0, 0.4);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.ia-header__toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.ia-header__toggle-bar {
  position: absolute;
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--gray-100);
  transition: transform var(--transition-base), opacity var(--transition-fast), top var(--transition-base), bottom var(--transition-base);
}

.ia-header__toggle-bar:nth-child(1) {
  top: 0.7rem;
}

.ia-header__toggle-bar:nth-child(2) {
  top: 1.05rem;
}

.ia-header__toggle-bar:nth-child(3) {
  bottom: 0.7rem;
}

.ia-header__toggle.is-open .ia-header__toggle-bar:nth-child(1) {
  top: 1.05rem;
  transform: rotate(45deg);
}

.ia-header__toggle.is-open .ia-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.ia-header__toggle.is-open .ia-header__toggle-bar:nth-child(3) {
  bottom: auto;
  top: 1.05rem;
  transform: rotate(-45deg);
}

/* Mobile layout */

@media (max-width: 768px) {
  .ia-header__inner {
    padding-block: 0.7rem;
  }

  .ia-header__toggle {
    display: inline-flex;
  }

  .ia-header__nav {
    position: fixed;
    inset-inline: 0;
    top: 3.4rem;
    background: radial-gradient(circle at top, rgba(194, 155, 111, 0.12), transparent 55%),
      linear-gradient(to bottom, rgba(10, 11, 12, 0.98), rgba(10, 11, 12, 0.98));
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  }

  .ia-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-12) var(--container-padding-x) var(--space-10);
  }

  .ia-header__nav-link {
    font-size: var(--text-sm);
  }

  .ia-header__nav-item--cta {
    margin-left: 0;
    margin-top: var(--space-4);
  }

  .ia-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

/* Reduce motion preference */

@media (prefers-reduced-motion: reduce) {
  .ia-header__nav {
    transition: none;
  }

  .ia-header__toggle-bar {
    transition: none;
  }
}