/* ============================================================
   CALVION TECHNOLOGIES
   navbar.css — Navigation Component
   ============================================================ */

/* ── Base Navbar ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  background-color: rgba(255, 255, 255, 1);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.07);
  transition: background-color 0.35s ease,
              box-shadow 0.35s ease,
              backdrop-filter 0.35s ease;
}

/* State when user has NOT scrolled (top of page) */
.navbar--transparent {
  background-color: rgba(255, 255, 255, 1);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.07);
}

/* Frosted glass state — kicks in after scrolling */
.navbar--scrolled {
  background-color: rgba(248, 248, 246, 0.82);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08),
              0 4px 20px rgba(0, 0, 0, 0.04);
}

/* ── Inner Layout ── */
.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-px);
  height: 100%;
}

/* ── Logo ── */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.navbar__logo-mark {
  flex-shrink: 0;
}

.navbar__logo-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.navbar__logo-name {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.12em;
  line-height: 1;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.navbar__logo-sub {
  font-size: 0.625rem;
  font-weight: var(--weight-medium);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  line-height: 1;
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

/* ── Nav Links ── */
.navbar__nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.navbar__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: var(--space-2) var(--space-5);
  position: relative;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: var(--space-5);
  right: var(--space-5);
  height: 1px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
  transform-origin: left;
}

.navbar__link:hover {
  color: var(--color-text-primary);
}

.navbar__link:hover::after {
  transform: scaleX(1);
}

/* Dropdown trigger */
.navbar__link--dropdown {
  cursor: pointer;
}

.navbar__chevron {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  opacity: 0.6;
}

.navbar__item--open .navbar__chevron {
  transform: rotate(180deg);
}

/* ── Dropdown Menu ── */
.navbar__dropdown {
  position: absolute;
  top: 100%;           /* flush to bottom of nav item — no gap */
  left: 50%;
  transform: translateX(-50%);
  width: 640px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-md);
  /* padding-top bridges the visual gap without breaking hover coverage */
  padding: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-base),
              transform var(--transition-base),
              visibility var(--transition-base);
  transform: translateX(-50%) translateY(-6px);
  z-index: var(--z-dropdown);
}

/* Invisible bridge fills the gap between nav link and dropdown —
   cursor passing through it still counts as hovering the dropdown */
.navbar__dropdown::before {
  content: '';
  position: absolute;
  top: -10px;     /* covers the visual offset gap */
  left: 0;
  right: 0;
  height: 10px;
  background: transparent;
}

/* Visual inner container — adds the top padding back purely visually */
.navbar__dropdown-inner {
  padding: var(--space-3) 0;
}

.navbar__item {
  position: relative;
}

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

.navbar__dropdown-item {
  display: block;
  min-width: 0;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: var(--weight-regular);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background-color var(--transition-fast),
              color var(--transition-fast);
}

.navbar__dropdown-item:hover {
  background-color: var(--color-off-white);
  color: var(--color-text-primary);
}

.navbar__dropdown-item strong {
  display: block;
  font-weight: var(--weight-medium);
  color: var(--color-text-primary);
  margin-bottom: 1px;
}

.navbar__dropdown-item span {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Right Actions ── */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Brochure button */
.navbar__brochure {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  letter-spacing: 0.02em;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-strong);
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: border-color var(--transition-fast),
              color var(--transition-fast),
              background-color var(--transition-fast);
}

.navbar__brochure:hover {
  border-color: var(--color-text-primary);
  color: var(--color-text-primary);
}

/* Separator */
.navbar__separator {
  width: 1px;
  height: 20px;
  background-color: var(--color-border);
}

/* ── Mobile Hamburger ── */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  cursor: pointer;
  padding: var(--space-2);
  background: none;
  border: none;
}

.navbar__hamburger-line {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--color-text-primary);
  transition: transform var(--transition-base),
              opacity var(--transition-base),
              width var(--transition-base);
  border-radius: 1px;
}

/* Active state */
.navbar__hamburger.is-active .navbar__hamburger-line:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.navbar__hamburger.is-active .navbar__hamburger-line:nth-child(2) {
  opacity: 0;
  width: 0;
}

.navbar__hamburger.is-active .navbar__hamburger-line:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile Menu Overlay ── */
.navbar__mobile-menu {
  display: none;
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  width: 100%;
  height: calc(100vh - var(--navbar-height));
  height: calc(100dvh - var(--navbar-height));
  background-color: var(--color-white);
  z-index: var(--z-navbar);
  padding: var(--space-8) var(--container-px);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base),
              visibility var(--transition-base);
}

.navbar__mobile-menu.is-open {
  opacity: 1;
  visibility: visible;
}

.navbar__mobile-link {
  display: block;
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text-primary);
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.navbar__mobile-link:hover {
  color: var(--color-accent);
}

.navbar__mobile-sub {
  margin-top: var(--space-4);
  padding-left: var(--space-4);
}

.navbar__mobile-sub-link {
  display: block;
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  color: var(--color-text-secondary);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-subtle);
  text-decoration: none;
}

.navbar__mobile-actions {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .navbar__nav {
    display: none;
  }
  .navbar__actions {
    display: none;
  }
  .navbar__hamburger {
    display: flex;
  }
  .navbar__mobile-menu {
    display: block;
  }
}

@media (max-width: 480px) {
  .navbar {
    height: var(--navbar-height-sm);
  }
  .navbar__mobile-menu {
    top: var(--navbar-height-sm);
    height: calc(100vh - var(--navbar-height-sm));
    height: calc(100dvh - var(--navbar-height-sm));
  }
}

.navbar__logo-img {
  height: 46px;
  width: auto;
  display: block;
  object-fit: contain;
}

@media (max-width: 480px) {
  .navbar__logo-img {
    height: 44px;
  }
}

@keyframes border-flash {
  0% {
    box-shadow: 0 0 0 2px rgba(216, 45, 45, 0.45), 0 0 10px rgba(216, 45, 45, 0.2);
  }
  50% {
    box-shadow: 0 0 0 2px rgba(216, 45, 45, 0.45), 0 0 10px rgba(216, 45, 45, 0.2);
  }
  100% {
    box-shadow: none;
  }
}

.highlight-border-flash {
  animation: border-flash 2.5s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}