.ds-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--ds-color-surface) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: var(--ds-border-width) solid var(--ds-color-border);
}

.ds-nav__container {
  max-width: var(--ds-container-max-width);
  margin: 0 auto;
  padding: 0 var(--ds-container-padding);
  height: var(--ds-header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: calc(var(--ds-spacing-unit) * 4);
}

.ds-nav__brand {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--ds-spacing-unit) * 3);
  text-decoration: none;
  color: var(--ds-color-text);
}

.ds-nav__brand-text {
  display: flex;
  flex-direction: column;
}

.ds-nav__brand-title {
  font-size: 1.5rem;
  /* Increased from 1.25rem */
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.9;
  text-transform: uppercase;
}

.ds-nav__brand-subtitle {
  font-size: 0.7rem;
  /* Slightly smaller for better contrast */
  color: var(--ds-color-accent);
  /* Use accent color for the subtitle */
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 2px;
}

.ds-nav__mobile-toggle {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.ds-nav__mobile-toggle-label {
  display: none;
  width: 42px;
  height: 42px;
  border: var(--ds-border-width) solid var(--ds-color-border);
  border-radius: calc(var(--ds-border-radius) - 4px);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: transparent;
}

.ds-nav__hamburger-box {
  position: relative;
  width: 18px;
  height: 12px;
}

.ds-nav__hamburger-inner {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--ds-color-text);
  transform: translateY(-50%);
  transition: transform var(--ds-animation-duration) var(--ds-animation-easing);
}

.ds-nav__hamburger-inner::before,
.ds-nav__hamburger-inner::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--ds-color-text);
  transition: transform var(--ds-animation-duration) var(--ds-animation-easing),
    opacity var(--ds-animation-duration) var(--ds-animation-easing);
}

.ds-nav__hamburger-inner::before {
  top: -5px;
}

.ds-nav__hamburger-inner::after {
  top: 5px;
}

.ds-nav__menu {
  display: flex;
  align-items: center;
}

.ds-nav__menu-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: calc(var(--ds-spacing-unit) * 6);
}

.ds-nav__menu-item {
  position: relative;
}

.ds-nav__menu-link {
  display: inline-flex;
  align-items: center;
  gap: calc(var(--ds-spacing-unit) * 1);
  padding: calc(var(--ds-spacing-unit) * 2) 0;
  text-decoration: none;
  color: var(--ds-color-text);
  font-weight: 600;
  position: relative;
}

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

.ds-nav__menu-link--active {
  color: var(--ds-color-accent);
}

.ds-nav__menu-link--active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--ds-color-accent);
}

.ds-nav__dropdown {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 220px;
  background: var(--ds-color-surface);
  border: var(--ds-border-width) solid var(--ds-color-border);
  border-radius: var(--ds-border-radius);
  box-shadow: var(--ds-shadow-lg);
  padding: calc(var(--ds-spacing-unit) * 2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity var(--ds-animation-duration) var(--ds-animation-easing),
    transform var(--ds-animation-duration) var(--ds-animation-easing),
    visibility var(--ds-animation-duration) var(--ds-animation-easing);
}

.ds-nav__menu-item:hover .ds-nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.ds-nav__dropdown-link {
  display: block;
  padding: calc(var(--ds-spacing-unit) * 2) calc(var(--ds-spacing-unit) * 3);
  border-radius: calc(var(--ds-border-radius) - 6px);
  text-decoration: none;
  color: var(--ds-color-text);
}

.ds-nav__dropdown-link:hover {
  background: color-mix(in srgb, var(--ds-color-accent) 8%, transparent);
  color: var(--ds-color-accent);
}

.ds-nav__actions {
  display: flex;
  align-items: center;
  gap: calc(var(--ds-spacing-unit) * 2);
}

.ds-nav__mobile-actions {
  display: none;
  flex-direction: column;
  gap: calc(var(--ds-spacing-unit) * 3);
  padding: calc(var(--ds-spacing-unit) * 4) 0 0;
  border-top: var(--ds-border-width) solid var(--ds-color-border);
  margin-top: calc(var(--ds-spacing-unit) * 4);
}

@media (max-width: 820px) {
  .ds-nav__mobile-toggle-label {
    display: inline-flex;
  }

  .ds-nav__menu {
    position: absolute;
    top: var(--ds-header-height);
    left: 0;
    right: 0;
    display: none;
    background: var(--ds-color-surface);
    border-bottom: var(--ds-border-width) solid var(--ds-color-border);
    padding: calc(var(--ds-spacing-unit) * 4) var(--ds-container-padding);
    box-shadow: var(--ds-shadow-md);
  }

  .ds-nav__menu-list {
    flex-direction: column;
    align-items: stretch;
    gap: calc(var(--ds-spacing-unit) * 2);
  }

  .ds-nav__menu-link {
    padding: calc(var(--ds-spacing-unit) * 3) 0;
  }

  .ds-nav__actions {
    display: none;
  }

  .ds-nav__mobile-actions {
    display: flex;
  }

  #nav-toggle:checked~.ds-nav__mobile-toggle-label .ds-nav__hamburger-inner {
    transform: translateY(-50%) rotate(45deg);
  }

  #nav-toggle:checked~.ds-nav__mobile-toggle-label .ds-nav__hamburger-inner::before {
    transform: translateY(5px) rotate(90deg);
  }

  #nav-toggle:checked~.ds-nav__mobile-toggle-label .ds-nav__hamburger-inner::after {
    opacity: 0;
  }

  #nav-toggle:checked~#primary-navigation {
    display: block;
  }
}