.eb-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(250, 247, 248, 0.96);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-subtle);
}

.eb-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
  gap: var(--space-16);
}

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

.eb-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.25rem 0.35rem;
  border-radius: var(--radius-pill);
  text-decoration: none;
}

.eb-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 20%, #ffffff 0, #f5d7df 40%, #e8b6c3 70%, #d28da1 100%);
  box-shadow: var(--shadow-sm);
}

.eb-header__logo-text {
  font-family: var(--font-family-heading);
  font-size: 1.1rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text);
  white-space: nowrap;
}

.eb-header__nav {
  flex: 1;
}

.eb-header__nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.75rem;
}

.eb-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.25rem 0;
}

.eb-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary-strong), var(--color-primary));
  transition: width var(--transition-normal);
}

.eb-header__nav-link:hover::after,
.eb-header__nav-link:focus-visible::after {
  width: 100%;
}

.eb-header__nav-link:hover {
  color: var(--color-text);
}

.eb-header__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.eb-header__cta {
  padding-inline: 1.3rem;
  font-size: var(--font-size-xs);
}

.eb-header__icon-button {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.eb-header__icon-button:hover {
  background-color: var(--color-primary-soft);
  color: var(--color-text);
  box-shadow: var(--shadow-xs);
  transform: translateY(-1px);
}

.eb-header__icon-button:focus-visible {
  outline: 2px solid var(--color-primary-strong);
  outline-offset: 3px;
}

.eb-header__toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.2rem;
  cursor: pointer;
}

.eb-header__toggle-bar {
  width: 1.2rem;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast), background-color var(--transition-fast);
}

/* Mobile state */

@media (max-width: 768px) {
  .eb-header__inner {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .eb-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: rgba(250, 247, 248, 0.98);
    border-bottom: 1px solid var(--color-border-subtle);
    transform-origin: top center;
    transform: scaleY(1);
  }

  .eb-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-12) var(--space-16) var(--space-12);
    gap: 0.9rem;
  }

  .eb-header__actions {
    margin-left: auto;
  }

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

  /* Enhance progressive enhancement: closed by default when JS adds class
     .eb-header--js-enabled. Without JS, menu remains visible and usable. */
  .eb-header.eb-header--js-enabled .eb-header__nav {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: scaleY(0.96);
    transition: max-height var(--transition-slow), opacity var(--transition-normal), transform var(--transition-normal);
  }

  .eb-header.eb-header--js-enabled.eb-header--menu-open .eb-header__nav {
    max-height: 420px;
    opacity: 1;
    transform: scaleY(1);
  }

  .eb-header.eb-header--js-enabled .eb-header__nav-list {
    padding-block: var(--space-8);
  }

  .eb-header__nav-link {
    font-size: var(--font-size-base);
  }

  .eb-header.eb-header--menu-open .eb-header__toggle-bar:nth-child(1) {
    transform: translateY(4px) rotate(45deg);
  }

  .eb-header.eb-header--menu-open .eb-header__toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .eb-header.eb-header--menu-open .eb-header__toggle-bar:nth-child(3) {
    transform: translateY(-4px) rotate(-45deg);
  }
}

@media (max-width: 600px) {
  .eb-header__inner {
    gap: var(--space-8);
  }

  .eb-header__logo-text {
    font-size: 1rem;
  }

  .eb-header__cta {
    display: none;
  }
}