.nav__item[data-dropdown] {
  position: relative;
  padding-bottom: 0.85rem;
  margin-bottom: -0.85rem;
}

.nav__dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  width: 340px;
  padding: 0.8rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 24px 44px rgba(16,36,53,0.14);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  z-index: 30;
}

.nav__item:hover > .nav__dropdown,
.nav__item.is-open > .nav__dropdown,
.nav__item:focus-within > .nav__dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav__dropdown::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 28px;
  width: 18px;
  height: 18px;
  background: var(--color-white);
  border-left: 1px solid var(--color-border);
  border-top: 1px solid var(--color-border);
  transform: rotate(45deg);
}

.nav__dropdown a {
  display: block;
  padding: 0.92rem 1rem;
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-weight: 700;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.nav__dropdown a span {
  display: block;
  font-size: 0.88rem;
  color: var(--color-text-soft);
  font-weight: 500;
  margin-top: 0.28rem;
}

.nav__dropdown a:hover,
.nav__dropdown a:focus-visible {
  background: rgba(15, 139, 141, 0.08);
  color: var(--color-accent);
  transform: translateX(2px);
}

@media (max-width: 1024px) {
  .nav__item[data-dropdown] {
    padding-bottom: 0;
    margin-bottom: 0;
  }

  .nav__drop-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
  }

  .nav__drop-toggle::after {
    content: "";
    width: 0.65rem;
    height: 0.65rem;
    border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor;
    transform: rotate(45deg);
    margin-right: 0.35rem;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
  }

  .nav__item.is-open > .nav__drop-toggle::after {
    transform: rotate(225deg);
  }

  .nav__dropdown {
    position: static;
    width: 100%;
    opacity: 1;
    transform: none;
    pointer-events: auto;
    background: transparent;
    border: 0;
    box-shadow: none;
    padding: 0 0 0 0.9rem;
    display: grid;
    grid-template-rows: 0fr;
    overflow: hidden;
    transition: grid-template-rows var(--transition-normal), padding-top var(--transition-normal);
  }

  .nav__dropdown > * {
    min-height: 0;
  }

  .nav__dropdown::before {
    display: none;
  }

  .nav__item.is-open > .nav__dropdown {
    grid-template-rows: 1fr;
    padding-top: 0.2rem;
  }

  .nav__dropdown a {
    padding: 0.78rem 0.95rem;
    background: transparent;
    border-left: 2px solid var(--color-border);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin-top: 0.22rem;
    font-size: 0.98rem;
    line-height: 1.35;
    font-weight: 600;
    color: var(--color-primary);
  }

  .nav__dropdown a span {
    display: none;
  }

  .nav__dropdown a:hover,
  .nav__dropdown a:focus-visible {
    background: rgba(15, 139, 141, 0.08);
    color: var(--color-accent);
    transform: none;
  }
}