/* ==========================================================================
   YS Liu Studio — Universal Multi-Language Switcher Component
   ========================================================================== */
.lang-switcher {
  position: relative;
  display: inline-block;
  font-family: -apple-system, BlinkMacSystemFont, "Plus Jakarta Sans", "Segoe UI", Roboto, sans-serif;
  z-index: 120;
}

.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.85rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(15, 23, 42, 0.15);
  color: #0f172a;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  line-height: 1;
}

.lang-btn:hover,
.lang-btn:focus-visible,
.lang-switcher.is-open .lang-btn {
  background: #ffffff;
  border-color: #00dc82;
  box-shadow: 0 3px 10px rgba(0, 220, 130, 0.2);
  transform: translateY(-1px);
}

.lang-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  color: #059669;
}

.lang-current {
  letter-spacing: -0.01em;
}

.lang-chevron {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  color: #64748b;
  transition: transform 0.2s ease;
}

.lang-switcher.is-open .lang-chevron {
  transform: rotate(180deg);
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 160px;
  background: #ffffff;
  border: 1px solid rgba(15, 23, 42, 0.12);
  border-radius: 14px;
  padding: 6px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.14), 0 2px 6px rgba(15, 23, 42, 0.05);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px) scale(0.98);
  transition: all 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.lang-switcher.is-open .lang-dropdown,
.lang-switcher:focus-within .lang-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.lang-opt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 0.84rem;
  font-weight: 500;
  color: #334155;
  text-decoration: none;
  transition: all 0.12s ease;
}

.lang-opt:hover {
  background: #f1f5f9;
  color: #0f172a;
}

.lang-opt.active {
  background: rgba(0, 220, 130, 0.12);
  color: #047857;
  font-weight: 700;
}

.lang-opt.active::after {
  content: "✓";
  font-weight: 800;
  color: #059669;
  font-size: 0.85rem;
}

/* Dark mode friendly fallback */
@media (prefers-color-scheme: dark) {
  .lang-btn {
    background: rgba(30, 41, 59, 0.95);
    border-color: rgba(255, 255, 255, 0.15);
    color: #f1f5f9;
  }
  .lang-dropdown {
    background: #1e293b;
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
  }
  .lang-opt {
    color: #cbd5e1;
  }
  .lang-opt:hover {
    background: #334155;
    color: #ffffff;
  }
  .lang-opt.active {
    background: rgba(0, 220, 130, 0.2);
    color: #34d399;
  }
}