/* ================================
   Navbar Styles
   Sticky navigation with mobile hamburger
   ================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
}

.navbar {
  background-color: var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
}

.navbar-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-text-light);
  letter-spacing: 0.04em;
}

@media (max-width: 768px) {
  .navbar-logo {
    font-size: 1.3rem;
    position: relative;
    z-index: 1001;
  }
}

.navbar-logo span {
  font-weight: 700;
}

/* Navigation links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  text-decoration: underline;
}

/* Mobile hamburger (CSS-only) */
.nav-toggle {
  display: none;
}

.nav-toggle-label {
  display: none;
  cursor: pointer;
  padding: 0.35rem;
}

.nav-toggle-label span,
.nav-toggle-label span::before,
.nav-toggle-label span::after {
  display: block;
  background-color: var(--color-text-light);
  height: 2px;
  width: 22px;
  border-radius: 0;
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle-label span::before,
.nav-toggle-label span::after {
  content: '';
  position: absolute;
  left: 0;
}

.nav-toggle-label span::before {
  top: -6px;
}

.nav-toggle-label span::after {
  top: 6px;
}

/* Checkbox checked state transforms the icon */
.nav-toggle:checked + .nav-toggle-label span {
  transform: rotate(45deg);
}

.nav-toggle:checked + .nav-toggle-label span::before {
  transform: rotate(90deg);
  top: 0;
}

.nav-toggle:checked + .nav-toggle-label span::after {
  opacity: 0;
}

/* Mobile menu visibility */
@media (max-width: 768px) {
  .nav-toggle-label {
    display: block;
    position: relative;
    z-index: 1001;
  }

  .nav-links {
    position: fixed;
    inset: 56px 0 auto 0;
    background-color: var(--color-primary);
    z-index: 1000;
    flex-direction: column;
    padding: 1rem 1.5rem 1.5rem;
    gap: 1rem;
    transform: translateY(-120%);
    transition: transform 0.2s ease;
  }

  .nav-toggle:checked ~ .nav-links {
    transform: translateY(0%);
  }
}

.navbar-logo img {
  height: 40px;
  width: auto;
  display: block;
}