/* Header-specific styles building on base.css */

.shell-header {
  position: sticky;
  top: 0;
  z-index: 50;
}

.shell-header__inner {
  gap: var(--space-4);
}

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

.shell-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.shell-header__logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 30% 70% 60% 40%;
  background: radial-gradient(circle at 30% 20%, #ffb077 0, var(--color-primary) 40%, #7f1d1d 100%);
  box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.9), 0 14px 30px rgba(0, 0, 0, 0.55);
}

.shell-header__logo-text {
  display: flex;
  flex-direction: column;
}

.shell-header__logo-title {
  font-family: var(--font-display);
  font-size: var(--font-size-lg);
  line-height: 1.1;
}

.shell-header__logo-subtitle {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-muted);
}

/* Navigation layout */
.shell-header__nav-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

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

.shell-header__nav-item--accent .site-nav__link {
  color: var(--gray-50);
}

.shell-header__nav-item--accent .site-nav__link::after {
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
}

.shell-header__cta {
  margin-left: var(--space-4);
}

.shell-header__cta-btn {
  font-size: var(--font-size-xs);
  padding-inline: 1rem;
}

/* Mobile toggle */
.shell-header__toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.9);
  align-items: center;
  justify-content: center;
  color: var(--gray-50);
}

.shell-header__toggle-icon {
  position: relative;
  width: 18px;
  height: 14px;
}

.shell-header__toggle-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 999px;
  background: var(--gray-100);
  transition: transform var(--transition-base), opacity var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.shell-header__toggle-line:first-child {
  top: 0;
}

.shell-header__toggle-line:last-child {
  bottom: 0;
}

/* Open state */
.shell-header--menu-open .shell-header__toggle-line:first-child {
  top: 6px;
  transform: rotate(45deg);
}

.shell-header--menu-open .shell-header__toggle-line:last-child {
  bottom: 6px;
  transform: rotate(-45deg);
}

/* Mobile nav behaviour */
@media (max-width: 960px) {
  .shell-header__toggle {
    display: inline-flex;
  }

  .shell-header__nav-wrapper {
    position: fixed;
    inset-inline: 0;
    top: var(--nav-height);
    background: radial-gradient(circle at top, #020617 0, #020309 60%, #000 100%);
    border-top: 1px solid rgba(148, 163, 184, 0.25);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4) var(--space-4) calc(var(--space-6) + env(safe-area-inset-bottom));
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-6px);
    transition: max-height var(--transition-slow), opacity var(--transition-base), transform var(--transition-base);
  }

  .shell-header--menu-open .shell-header__nav-wrapper {
    max-height: 420px;
    opacity: 1;
    transform: translateY(0);
  }

  .shell-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .shell-header__cta {
    margin-left: 0;
    margin-top: var(--space-3);
  }

  .shell-header__cta-btn {
    width: 100%;
    justify-content: center;
  }
}

/* Desktop adjustments */
@media (min-width: 961px) {
  .shell-header__nav-wrapper {
    justify-content: flex-end;
  }
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
  .shell-header__nav-wrapper {
    transition: none;
  }
}