/* ── Nav dropdown thumbnail cards ───────────────────────────────── */

.nav-dropdown--cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  min-width: 300px !important;
  padding: 10px !important;
}

.nav-dropdown--cards.nav-dropdown--wide {
  min-width: 420px !important;
}

.nav-dropdown--cards.nav-dropdown--3col {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.nav-dropdown--cards .nav-drop-card {
  display: flex !important;
  flex-direction: column !important;
  align-items: stretch !important;
  gap: 0 !important;
  padding: 0 !important;
  border-radius: 14px !important;
  border: 1px solid color-mix(in srgb, var(--text) 6%, transparent) !important;
  background: color-mix(in srgb, var(--text) 3%, transparent) !important;
  overflow: hidden;
  text-decoration: none !important;
  transition:
    transform 0.22s cubic-bezier(0.34, 1.2, 0.64, 1),
    border-color 0.2s,
    box-shadow 0.22s,
    background 0.2s !important;
}

.nav-dropdown--cards .nav-drop-card:hover {
  transform: translateY(-3px) scale(1.02) !important;
  border-color: color-mix(in srgb, var(--text) 14%, transparent) !important;
  background: color-mix(in srgb, var(--text) 4%, transparent) !important;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}

.nav-dropdown--cards .nav-drop-card.active {
  border-color: color-mix(in srgb, var(--thumb-accent, var(--red)) 45%, transparent) !important;
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--thumb-accent, var(--red)) 25%, transparent),
    0 8px 24px color-mix(in srgb, var(--thumb-accent, var(--red)) 20%, transparent);
}

/* Thumbnail frame */
.nav-drop-thumb {
  position: relative;
  aspect-ratio: 5 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  isolation: isolate;
}

.nav-drop-thumb-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  transition: transform 0.4s cubic-bezier(0.34, 1.2, 0.64, 1), filter 0.3s;
}

.nav-drop-card:hover .nav-drop-thumb-img {
  transform: scale(1.1);
  filter: brightness(1.08) saturate(1.12);
}

.nav-drop-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, color-mix(in srgb, var(--bg) 72%, transparent) 0%, rgba(6, 8, 16, 0.08) 45%, transparent 70%),
    radial-gradient(ellipse 90% 70% at 50% 100%, color-mix(in srgb, var(--thumb-accent, var(--red)) 18%, transparent) 0%, transparent 60%);
  pointer-events: none;
  z-index: 2;
}

.nav-drop-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid color-mix(in srgb, var(--text) 6%, transparent);
  border-radius: inherit;
  pointer-events: none;
  z-index: 3;
}

.nav-drop-thumb-shine {
  position: absolute;
  top: -50%;
  left: -80%;
  width: 60%;
  height: 200%;
  background: linear-gradient(105deg, transparent 40%, color-mix(in srgb, var(--text) 18%, transparent) 50%, transparent 60%);
  transform: skewX(-18deg);
  z-index: 3;
  opacity: 0;
  transition: opacity 0.2s, left 0.45s ease;
  pointer-events: none;
}

.nav-drop-card:hover .nav-drop-thumb-shine {
  opacity: 1;
  left: 120%;
}

.nav-drop-title {
  display: block;
  padding: 8px 10px 9px;
  font-size: 0.72rem !important;
  font-weight: 700 !important;
  color: #2b211d !important;
  line-height: 1.2;
  letter-spacing: 0.01em;
  text-align: center;
  transition: color 0.18s;
}

.nav-drop-card:hover .nav-drop-title,
.nav-drop-card.active .nav-drop-title {
  color: #d93848 !important;
}

/* Per-item accent (active border + overlay tint) */
.nav-drop-card[data-thumb='kana'] { --thumb-accent: #ff4d5a; }
.nav-drop-card[data-thumb='shrine'] { --thumb-accent: #5eead4; }
.nav-drop-card[data-thumb='flashcards'] { --thumb-accent: #a78bfa; }
.nav-drop-card[data-thumb='phrases'] { --thumb-accent: #60a5fa; }
.nav-drop-card[data-thumb='sentences'] { --thumb-accent: #fbbf24; }
.nav-drop-card[data-thumb='course'] { --thumb-accent: #f472b6; }
.nav-drop-card[data-thumb='review'] { --thumb-accent: #00f5d4; }
.nav-drop-card[data-thumb='lessons'] { --thumb-accent: #ef4444; }
.nav-drop-card[data-thumb='map'] { --thumb-accent: #34d399; }
.nav-drop-card[data-thumb='grammar'] { --thumb-accent: #fb923c; }
.nav-drop-card[data-thumb='listening'] { --thumb-accent: #818cf8; }
.nav-drop-card[data-thumb='culture'] { --thumb-accent: #f43f5e; }
.nav-drop-card[data-thumb='writing'] { --thumb-accent: #2dd4bf; }
.nav-drop-card[data-thumb='pronunciation'] { --thumb-accent: #c084fc; }
.nav-drop-card[data-thumb='reading'] { --thumb-accent: #38bdf8; }
.nav-drop-card[data-thumb='conversation'] { --thumb-accent: #4ade80; }

.nav-drop-thumb {
  background: var(--bg2);
}

/* Override legacy list-row dropdown rules */
.nav-dropdown--cards .nav-drop-card.active {
  color: inherit !important;
  background: color-mix(in srgb, var(--text) 4%, transparent) !important;
}

.nav-user-dropdown {
  display: block !important;
  grid-template-columns: none !important;
}

/* User menu stays text-only */
.nav-user-dropdown a {
  display: block !important;
  padding: 10px 12px !important;
  border-radius: 10px !important;
  font-size: 0.84rem !important;
  font-weight: 600 !important;
}

/* ── Mobile thumbnail grid ────────────────────────────────────────── */

.mobile-nav-thumb-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.mobile-nav-thumb-grid .nav-drop-card {
  display: flex !important;
  flex-direction: column !important;
  align-items: stretch !important;
  gap: 0 !important;
  padding: 0 !important;
  border-radius: 12px !important;
  border: 1px solid color-mix(in srgb, var(--text) 8%, transparent) !important;
  background: color-mix(in srgb, var(--text) 3%, transparent) !important;
  overflow: hidden;
  text-decoration: none !important;
  transition:
    transform 0.18s cubic-bezier(0.34, 1.2, 0.64, 1),
    border-color 0.18s,
    box-shadow 0.18s,
    background 0.18s !important;
}

.mobile-nav-thumb-grid .nav-drop-card:hover {
  transform: translateY(-2px) scale(1.01) !important;
  border-color: color-mix(in srgb, var(--text) 16%, transparent) !important;
  background: color-mix(in srgb, var(--text) 5%, transparent) !important;
}

.mobile-nav-thumb-grid .nav-drop-card:active {
  transform: scale(0.98) !important;
}

.mobile-nav-thumb-grid .nav-drop-card.active {
  border-color: color-mix(in srgb, var(--thumb-accent, var(--red)) 50%, transparent) !important;
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--thumb-accent, var(--red)) 30%, transparent);
}

.mobile-nav-thumb-grid .nav-drop-thumb {
  position: relative;
  width: 100%;
  height: 60px;
  max-height: 60px;
  aspect-ratio: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  isolation: isolate;
  background: var(--bg3, #161a22);
}

.mobile-nav-thumb-grid .nav-drop-thumb-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  transition: transform 0.35s ease;
}

.mobile-nav-thumb-grid .nav-drop-card:hover .nav-drop-thumb-img {
  transform: scale(1.06);
}

.mobile-nav-thumb-grid .nav-drop-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, color-mix(in srgb, var(--bg) 80%, transparent) 0%, rgba(6, 8, 16, 0.1) 50%, transparent 80%);
  pointer-events: none;
  z-index: 2;
}

.mobile-nav-thumb-grid .nav-drop-title {
  display: block;
  padding: 6px 8px 7px !important;
  font-size: 0.72rem !important;
  font-weight: 700 !important;
  color: var(--text, #f0ede6) !important;
  line-height: 1.25;
  letter-spacing: 0.01em;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.18s;
}

:root:not(.flk-dark) .mobile-nav-thumb-grid .nav-drop-title,
.flk-warm .mobile-nav-thumb-grid .nav-drop-title,
.flk-light .mobile-nav-thumb-grid .nav-drop-title,
.flk-peach .mobile-nav-thumb-grid .nav-drop-title {
  color: #2b211d !important;
}

.mobile-nav-thumb-grid .nav-drop-card:hover .nav-drop-title,
.mobile-nav-thumb-grid .nav-drop-card.active .nav-drop-title {
  color: var(--red, #e63946) !important;
}



@media (max-width: 480px) {
  .nav-dropdown--cards {
    min-width: 260px !important;
  }
  .nav-dropdown--cards.nav-dropdown--3col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .nav-drop-card:hover .nav-drop-thumb-shine,
  .nav-drop-card:hover .nav-drop-thumb-img {
    transition: none;
    transform: none;
    filter: none;
    left: -80%;
  }
  .nav-dropdown--cards .nav-drop-card:hover {
    transform: none !important;
  }
}