.grp-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.grp-header__inner {
  align-items: center;
  gap: var(--space-4);
}

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

.grp-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
}

.grp-header__logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 20%, #ff6b6b, #e63946 60%, #070b10 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-soft);
}

.grp-header__logo-icon {
  font-size: 1rem;
  color: #fff;
}

.grp-header__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.grp-header__title {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
}

.grp-header__subtitle {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

.grp-header__nav {
  margin-left: auto;
}

.grp-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.grp-header__nav-item--cta a.btn {
  padding-inline: 1.2rem;
  padding: 6px 15px !important;
}

/* Mobile toggle */
.grp-header__toggle {
  display: none;
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(7, 11, 16, 0.85);
  justify-content: center;
  align-items: center;
  cursor: pointer;
}

.grp-header__toggle-bar {
  width: 20px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 999px;
  transition: transform var(--transition-fast), opacity var(--transition-fast), top var(--transition-fast), bottom var(--transition-fast);
  position: relative;
}

.grp-header__toggle-bar:nth-child(1) {
  top: -4px;
}

.grp-header__toggle-bar:nth-child(3) {
  bottom: -4px;
}

.grp-header__toggle[aria-expanded="true"] .grp-header__toggle-bar:nth-child(1) {
  transform: translateY(4px) rotate(45deg);
}

.grp-header__toggle[aria-expanded="true"] .grp-header__toggle-bar:nth-child(2) {
  opacity: 0;
}

.grp-header__toggle[aria-expanded="true"] .grp-header__toggle-bar:nth-child(3) {
  transform: translateY(-4px) rotate(-45deg);
}

/* Responsive behavior */
@media (max-width: 768px) {
  .grp-header__toggle {
    display: flex;
    flex-direction: column;
  }

  .grp-header__nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background: radial-gradient(circle at top, rgba(21, 27, 36, 0.98), rgba(7, 11, 16, 0.98));
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-normal), transform var(--transition-normal), visibility var(--transition-normal);
  }

  .grp-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-4) var(--space-4) var(--space-6);
  }

  .grp-header__nav-item a {
    width: 100%;
  }

  .grp-header__nav-item--cta a.btn {
    width: 100%;
    justify-content: center;
  }

  .grp-header__nav--open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: scaleY(1);
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .grp-header__subtitle {
    display: none;
  }
}