/* navbar.css - Header & Sticky Nav styling */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  background-color: transparent;
  transition: background-color var(--transition-normal), backdrop-filter var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  border-bottom: 1px solid transparent;
}

.header--scrolled {
  background-color: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border-dark);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.7);
}

/* 3-Zone Balanced Grid: Brand (Left) | Navigation (Centered) | CTA (Right) */
.navbar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
}

/* Brand Group - Left Aligned */
.navbar__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  justify-self: start;
}

.navbar__brand-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  display: block;
}

.navbar__brand-text {
  font-size: 1.28rem;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: -0.02em;
  line-height: 1;
}

.navbar__brand-small-i {
  font-size: 0.9em;
  letter-spacing: 0.01em;
  font-style: italic;
}

/* Navigation Links - Center Aligned */
.navbar__menu {
  display: flex;
  align-items: center;
  gap: clamp(20px, 2.2vw, 34px);
  list-style: none;
  margin: 0;
  padding: 0;
  justify-self: center;
}

.navbar__item {
  position: relative;
}

/* Hide mobile-only CTA from desktop navbar menu */
.navbar__item.navbar__mobile-cta {
  display: none;
}

.navbar__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-nav);
  transition: color var(--transition-fast);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 0;
  white-space: nowrap;
}

.navbar__link:hover,
.navbar__link--active {
  color: var(--color-text-nav-hover);
}

.navbar__link--active {
  color: #FFFFFF;
  position: relative;
}

.navbar__link--active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--color-primary-glow);
}

/* Dropdown Caret Icon */
.navbar__caret {
  display: inline-block;
  font-size: 0.55rem;
  transition: transform var(--transition-fast);
  opacity: 0.7;
}

.navbar__item--dropdown:hover .navbar__caret,
.navbar__item--dropdown.is-open .navbar__caret {
  transform: rotate(180deg);
  opacity: 1;
}

/* Desktop Dropdown Menu */
.navbar__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 220px;
  background: rgba(10, 10, 12, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-purple-border);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8), 0 0 20px rgba(139, 92, 246, 0.15);
  padding: 8px;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.25s;
  z-index: 100;
}

/* Invisible hover bridge to prevent mouse gap issues */
.navbar__item--dropdown::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  height: 12px;
}

.navbar__item--dropdown:hover .navbar__dropdown,
.navbar__item--dropdown.is-open .navbar__dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.navbar__dropdown-item {
  width: 100%;
}

.navbar__dropdown-link {
  display: flex;
  align-items: center;
  padding: 10px 14px;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-nav);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.navbar__dropdown-link:hover,
.navbar__dropdown-link--active {
  color: #FFFFFF;
  background-color: rgba(139, 92, 246, 0.12);
  border-left: 2px solid var(--color-primary);
  padding-left: 12px;
}

/* Actions Right - Substantial CTA matching Reference 1 */
.navbar__actions {
  display: flex;
  align-items: center;
  justify-self: end;
}

.btn--nav-cta {
  background-color: #0d0d0f;
  color: #FFFFFF;
  border: 1px solid var(--color-purple-border);
  padding: 0.75rem 1.6rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  text-transform: none;
  /* Exact Title Case matching Reference 1 */
  border-radius: var(--radius-pill);
  box-shadow: 0 0 14px var(--color-primary-glow);
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn--nav-cta:hover {
  border-color: var(--color-primary);
  background-color: #121215;
  color: #FFFFFF;
  box-shadow: 0 0 20px var(--color-primary-glow);
  transform: translateY(-2px);
}

/* Mobile Toggle Hamburger */
.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
  padding: 0;
  justify-self: end;
}

.navbar__toggle-bar {
  height: 2px;
  width: 100%;
  background-color: #F5F5F5;
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

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

.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}