/* ==========================================================================
   ALBINI E CASTELLI — Mobile drawer
   Figma 190:3080
   Translucent white panel, red stacked nav, chevrons on the two parents.
   Overrides .site-nav__link (header.css) and .megabar (mega-bar.css) for
   mobile, so this file must load after both.
   ========================================================================== */
.nav-toggle {
  display: none;
  width: 24px;
  height: 18px;
  margin-left: auto;
  position: relative;
  flex: none;
}
.nav-toggle span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--c-text-muted);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle span:nth-child(1) { top: 0; }
.nav-toggle span:nth-child(2) { top: 50%; transform: translateY(-50%); }
.nav-toggle span:nth-child(3) { bottom: 0; }
.site-header--over:not(.is-stuck) .nav-toggle span { background: var(--c-text-invert); }

body.nav-open .nav-toggle span { background: var(--c-accent); }
body.nav-open .nav-toggle span:nth-child(1) { top: 50%; transform: translateY(-50%) rotate(45deg); }
body.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle span:nth-child(3) { bottom: auto; top: 50%; transform: translateY(-50%) rotate(-45deg); }

@media (max-width: 1024px) {
  .nav-toggle { display: block; }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: var(--z-drawer);
    background: rgba(255, 255, 255, .94);
    -webkit-backdrop-filter: blur(6px);
            backdrop-filter: blur(6px);
    padding: 96px 25px 40px;
    overflow-y: auto;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform var(--dur) var(--ease), visibility var(--dur) var(--ease);
  }
  body.nav-open { overflow: hidden; }
  body.nav-open .site-nav { transform: none; visibility: visible; }

  .site-nav__list {
    flex-direction: column;
    align-items: flex-start;
    gap: 26px;
  }
  .site-nav__link,
  .site-header--over .site-nav__link { color: var(--c-accent); font-size: 15px; }

  /* Parent items get a chevron and expand in place. */
  .site-nav__item--parent > .site-nav__link::after {
    content: "";
    display: inline-block;
    width: 8px; height: 8px;
    margin-left: 10px;
    border-right: 1.2px solid currentColor;
    border-bottom: 1.2px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
    transition: transform var(--dur) var(--ease);
  }
  .site-nav__item--parent.is-open > .site-nav__link::after {
    transform: translateY(1px) rotate(-135deg);
  }

  /* Mega-bar degrades to an inline accordion. */
  .megabar {
    position: static;
    height: auto;
    background: transparent;
    visibility: visible;
    opacity: 1;
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--dur) var(--ease);
  }
  .site-nav__item.is-open .megabar { grid-template-rows: 1fr; }
  .megabar__list {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 14px;
    height: auto;
    max-width: none;
    padding: 0 0 0 16px;
    min-height: 0;
    overflow: hidden;
  }
  .site-nav__item.is-open .megabar__list { padding-top: 16px; }
  .megabar--projects .megabar__list { max-width: none; padding-left: 16px; }
  .megabar__item,
  .megabar--projects .megabar__item { width: auto; margin-right: 0; }
  .megabar__link { font-size: 14px; line-height: 1.4; }

  .lang-switch { margin-left: 0; margin-top: 14px; }
}