/* ============================================================
   NAV DRAWER — right-side hamburger menu (mobile only)
   Used by topbar.ejs and lesson.ejs. Chunky-3D vocabulary
   matches theme.css; loaded after theme.css.
   ============================================================ */

/* Hamburger / icon button — mobile-visible trigger */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 2px solid var(--ink);
  border-radius: 14px;
  background: var(--bg-soft);
  color: var(--ink);
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: 0 4px 0 var(--ink);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  flex-shrink: 0;
}

.icon-btn:hover { transform: translateY(-1px); box-shadow: 0 5px 0 var(--ink); }
.icon-btn:active { transform: translateY(4px); box-shadow: 0 0 0 var(--ink); }

.nav-hamburger { display: none; }
@media (max-width: 767px) {
  .nav-hamburger {
    display: inline-flex;
    background: var(--ink);
    color: var(--bg-soft);
  }
}

/* On desktop, the topbar pill row owns the actions — hide the drawer entirely */
@media (min-width: 768px) {
  .nav-drawer, .nav-drawer-scrim { display: none !important; }
}

/* Scrim — dim backdrop behind drawer */
.nav-drawer-scrim {
  position: fixed;
  inset: 0;
  background: rgba(43, 34, 71, 0.42);
  backdrop-filter: blur(2px);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.24s ease;
}

body.nav-drawer-open .nav-drawer-scrim {
  opacity: 1;
  pointer-events: auto;
}

/* Drawer panel — slides in from the right */
.nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  height: 100dvh;
  width: min(86vw, 320px);
  background: var(--bg-soft);
  border-left: 3px solid var(--ink);
  box-shadow: -10px 0 0 var(--ink);
  z-index: 999;
  transform: translateX(110%);
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  flex-direction: column;
  padding: 1rem 1.1rem 1.5rem;
  overflow-y: auto;
}

body.nav-drawer-open .nav-drawer {
  transform: translateX(0);
}

.nav-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 2px dashed var(--hair-strong);
}

.nav-drawer__title {
  font-family: var(--display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink);
}

.nav-drawer__close {
  width: 38px;
  height: 38px;
  font-size: 1rem;
}

.nav-drawer__nav {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.nav-drawer__hi {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--body);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink-soft);
  margin-bottom: 0.4rem;
}

.nav-drawer__hi strong {
  font-family: var(--display);
  font-weight: 700;
  color: var(--ink);
}

.nav-drawer__hi .hi-wave {
  font-size: 1.15rem;
}

.nav-drawer__link {
  display: block;
  font-family: var(--display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink);
  text-decoration: none;
  padding: 0.85rem 1rem;
  border-radius: 14px;
  background: #fff;
  border: 2px solid var(--ink);
  box-shadow: 0 4px 0 var(--ink);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  text-align: left;
}

.nav-drawer__link:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 0 var(--ink);
}

.nav-drawer__link:active {
  transform: translateY(4px);
  box-shadow: 0 0 0 var(--ink);
}

.nav-drawer__link--admin {
  background: var(--coral);
  color: #fff;
  border-color: var(--ink);
}

/* Lock body scroll when drawer is open */
body.nav-drawer-open {
  overflow: hidden;
}

@media (prefers-reduced-motion: reduce) {
  .nav-drawer { transition: none; }
  .nav-drawer-scrim { transition: none; }
}