/* Header styles for Nova Stivo
   Builds on base.css variables and typography
*/

.nv-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(18px);
  background: linear-gradient(90deg, rgba(11, 12, 16, 0.96), rgba(11, 12, 16, 0.92));
  border-bottom: 1px solid rgba(214, 195, 165, 0.22);
}

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

/* Branding */
.nv-header__branding {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
}

.nv-header__logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
}

.nv-header__logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  background: radial-gradient(circle at 20% 0%, rgba(216, 190, 137, 0.38), transparent 52%),
    linear-gradient(135deg, #23252b, #15161c);
  color: var(--color-heading);
  border: 1px solid rgba(214, 195, 165, 0.7);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.65);
}

.nv-header__logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nv-header__logo-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-heading);
}

.nv-header__logo-subtitle {
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gray-300);
}

/* Navigation */
.nv-header__nav {
  display: flex;
  align-items: center;
}

.nv-header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-24);
  list-style: none;
}

.nv-header__nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-100);
  padding-block: 0.25rem;
}

.nv-header__nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.4rem;
  height: 1px;
  transform: scaleX(0);
  transform-origin: center;
  background: linear-gradient(90deg, transparent, var(--color-heading), transparent);
  transition: transform var(--duration-normal) var(--ease-standard);
}

.nv-header__nav-link:focus-visible::after,
.nv-header__nav-link:hover::after {
  transform: scaleX(1);
}

.nv-header__nav-item--cta .nv-header__nav-link--cta {
  padding: 0.55rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(180, 94, 60, 0.7);
  background: radial-gradient(circle at 0 0, rgba(180, 94, 60, 0.55), transparent 55%),
    linear-gradient(120deg, rgba(35, 37, 43, 0.95), rgba(16, 17, 23, 0.98));
  box-shadow: var(--shadow-soft);
  color: #fffaf3;
}

.nv-header__nav-item--cta .nv-header__nav-link--cta:hover,
.nv-header__nav-item--cta .nv-header__nav-link--cta:focus-visible {
  background: radial-gradient(circle at 0 0, rgba(122, 62, 42, 0.6), transparent 55%),
    linear-gradient(120deg, rgba(26, 19, 16, 0.98), rgba(14, 12, 18, 0.98));
}

/* Mobile toggle */
.nv-header__toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid rgba(214, 195, 165, 0.5);
  background: rgba(15, 16, 22, 0.9);
  align-items: center;
  justify-content: center;
  padding: 0;
}

.nv-header__toggle-bar {
  position: absolute;
  width: 18px;
  height: 1.5px;
  border-radius: 999px;
  background: var(--gray-050);
  transition: transform var(--duration-fast) var(--ease-soft),
    opacity var(--duration-fast) var(--ease-soft),
    top var(--duration-fast) var(--ease-soft),
    bottom var(--duration-fast) var(--ease-soft);
}

.nv-header__toggle-bar:first-child {
  top: 11px;
}

.nv-header__toggle-bar:last-child {
  bottom: 11px;
}

.nv-header__toggle[aria-expanded="true"] .nv-header__toggle-bar:first-child {
  top: 15px;
  transform: rotate(40deg);
}

.nv-header__toggle[aria-expanded="true"] .nv-header__toggle-bar:last-child {
  bottom: 15px;
  transform: rotate(-40deg);
}

/* Mobile layout */
@media (max-width: 880px) {
  .nv-header__inner {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }

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

  .nv-header__nav {
    position: fixed;
    inset: 0 0 auto 0;
    top: 64px;
    background: radial-gradient(circle at top, rgba(200, 169, 106, 0.08), transparent 66%),
      rgba(11, 12, 16, 0.98);
    border-top: 1px solid rgba(214, 195, 165, 0.25);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--duration-normal) var(--ease-standard),
      opacity var(--duration-normal) var(--ease-standard);
  }

  .nv-header__nav-list {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-24) var(--space-20) var(--space-24);
    gap: var(--space-16);
  }

  .nv-header__nav-link {
    font-size: var(--font-size-md);
  }

  .nv-header__nav-item--cta .nv-header__nav-link--cta {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .nv-header__nav--open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
}

/* Reduced motion: no slide animation */
@media (prefers-reduced-motion: reduce) {
  .nv-header__nav {
    transition: none;
  }
}