.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
}

.nav__inner {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 0;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--nav-text);
}
.nav__logo { width: 28px; height: 28px; }
.nav__title { font-weight: 800; letter-spacing: .2px; }

.nav__links {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 10px;
}

.nav__link {
  color: var(--nav-text);
  opacity: .92;
  padding: 10px 10px;
  border-radius: 10px;
  display: inline-flex;
}
.nav__link:hover { background: var(--nav-hover); opacity: 1; }
.nav__link.is-active { background: var(--nav-active); opacity: 1; }

.nav__actions {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

/* Submenu: stable hover (no flicker) */
.nav__item { position: relative; }
.nav__item--has-sub .nav__submenu {
  position: absolute;
  left: 0;
  top: calc(100% - 2px); /* overlap slightly to avoid hover gap */
  min-width: 220px;

  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  box-shadow: 0 18px 40px var(--shadow-color);
  padding: 8px;

  /* smooth show/hide without flicker */
  opacity: 0;
  transform: translateY(-6px);
  visibility: hidden;
  pointer-events: none;
  transition: opacity 140ms ease, transform 140ms ease, visibility 0s linear 140ms;
}

.nav__submenu a {
  display: block;
  padding: 10px 10px;
  border-radius: 10px;
  color: var(--text-color);
  line-height: 1.35;
}
.nav__submenu a:hover { background: var(--card-alt-bg); }

@media (min-width: 901px) {
  .nav__item--has-sub:hover .nav__submenu,
  .nav__item--has-sub:focus-within .nav__submenu {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    pointer-events: auto;
    transition: opacity 140ms ease, transform 140ms ease, visibility 0s;
  }
}

/* Burger (mobile) */
.nav__burger {
  display: none;
  border: 1px solid var(--nav-border);
  background: transparent;
  color: var(--nav-text);
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
}
.nav__dots { font-size: 20px; line-height: 1; }

@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__burger { display: inline-flex; }
}

/* Drawer */
.nav__overlay[hidden], .nav__drawer[hidden] { display: none !important; }
.nav__overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 30;
}
.nav__drawer {
  position: fixed;
  top: 10px;
  right: 10px;
  width: min(360px, calc(100% - 20px));
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  box-shadow: 0 18px 50px var(--shadow-color);
  z-index: 31;
  overflow: hidden;
  color: var(--text-color);
}
.nav__drawerHead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 14px;
  background: var(--card-alt-bg);
  border-bottom: 1px solid var(--border-color);
}
.nav__drawerTitle { font-weight: 800; }
.nav__close {
  border: 1px solid var(--border-color);
  background: transparent;
  border-radius: 12px;
  padding: 8px 10px;
  cursor: pointer;
  color: var(--text-color);
}
.nav__drawerBody { padding: 14px; display: grid; gap: 8px; }
.nav__drawerLink {
  padding: 10px 10px;
  border-radius: 12px;
  background: var(--card-alt-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
}
.nav__drawerLink:hover { border-color: var(--primary-color); }
.nav__sep { border: none; border-top: 1px solid var(--border-color); margin: 8px 0; }
.nav__drawerBtn { width: 100%; }