/* =========================================================
   DERADA — Fullscreen mobile menu
   ========================================================= */

/* ====== FULLSCREEN MOBILE MENU ====== */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--color-bg-dark);
  color: var(--color-on-dark);
  z-index: calc(var(--z-modal) - 1);
  transform: translateY(-100%);
  transition: transform 700ms var(--ease-out-expo);
  display: flex;
  flex-direction: column;
  padding: calc(var(--header-h) + var(--space-7)) var(--gutter) var(--space-7);
  overflow-y: auto;
}
.mobile-menu.is-open {
  transform: translateY(0);
}
.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
  justify-content: center;
}
.mobile-menu__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-family: var(--font-display);
  font-size: clamp(2rem, 8vw, 3.5rem);
  line-height: 1;
  letter-spacing: var(--tracking-display);
  color: #fff;
  font-weight: 400;
  overflow: hidden;
}
.mobile-menu__link em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  color: var(--color-accent-soft);
}
.mobile-menu__link .num {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 0.4em;
  color: var(--color-accent-soft);
  align-self: flex-start;
  margin-top: 0.4em;
}
.mobile-menu__link .ch {
  display: inline-block;
  will-change: transform;
}
.mobile-menu__footer {
  padding-top: var(--space-7);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.65);
  font-size: var(--fs-body-s);
}
.mobile-menu__footer a { color: #fff; }
.mobile-menu__contact {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-3);
}
.mobile-menu__contact .btn { flex: 1; justify-content: center; }

/* header burger animation when open */
.site-header__menu-btn[aria-expanded="true"] span { background: transparent; }
.site-header__menu-btn[aria-expanded="true"] span::before {
  top: 0;
  transform: rotate(45deg);
}
.site-header__menu-btn[aria-expanded="true"] span::after {
  top: 0;
  transform: rotate(-45deg);
}
.site-header__menu-btn span::before,
.site-header__menu-btn span::after {
  transition: transform 300ms var(--ease-out-expo), top 300ms var(--ease-out-expo);
}

@media (max-width: 880px) {
  body.menu-open { overflow: hidden; }
  body.menu-open .site-header { mix-blend-mode: normal; color: #fff; }
}