/**
 * Butang tukar bahasa BM | EN.
 * Bentuk segmen mengikut corak .kb-surface-btn dalam base.css.
 */

.kb-lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
  padding: 0.15rem;
  border-radius: var(--radius-md, 8px);
  border: 1px solid var(--border, #e5e7eb);
  background: var(--surface-muted, #f8f9fb);
}

/*
 * Gaya lengkap dan berdikari — jangan bergantung pada .kb-surface-btn dalam
 * base.css, kerana halaman seperti login.html hanya memuatkan CSS sendiri.
 */
.kb-lang-toggle__btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.6rem;
  min-height: 2.15rem;
  margin: 0;
  padding: 0.4rem 0.6rem;
  font: inherit;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  border: 1px solid transparent;
  border-radius: var(--radius-sm, 6px);
  background: transparent;
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
}

.kb-lang-toggle__btn:hover:not(.is-active) {
  background: rgba(0, 0, 0, 0.045);
}

.kb-lang-toggle__btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-ring, rgba(217, 119, 6, 0.35));
}

.kb-app-tools {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.kb-app-refresh {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  margin: 0;
  padding: 0;
  border: 1px solid var(--border, #e5e7eb);
  border-radius: var(--radius-md, 8px);
  background: var(--surface-muted, #f8f9fb);
  color: var(--text, #111827);
  cursor: pointer;
  transition:
    background 0.15s ease,
    color 0.15s ease,
    border-color 0.15s ease;
}

.kb-app-refresh:hover:not(:disabled) {
  background: rgba(0, 0, 0, 0.045);
}

.kb-app-refresh:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--accent-ring, rgba(217, 119, 6, 0.35));
}

.kb-app-refresh:disabled {
  cursor: wait;
  opacity: 0.72;
}

.kb-app-refresh__icon {
  width: 1.05rem;
  height: 1.05rem;
  display: block;
}

.kb-app-refresh.is-busy .kb-app-refresh__icon {
  animation: kb-app-refresh-spin 0.7s linear infinite;
}

@keyframes kb-app-refresh-spin {
  to {
    transform: rotate(360deg);
  }
}

/* Halaman tanpa hos khusus — lekat di sudut supaya sentiasa dicapai. */
.kb-app-tools--floating,
.kb-lang-toggle--floating {
  position: fixed;
  top: max(0.75rem, env(safe-area-inset-top));
  right: max(0.75rem, env(safe-area-inset-right));
  z-index: 60;
}

.kb-app-tools--floating .kb-lang-toggle,
.kb-app-tools--floating .kb-app-refresh,
.kb-lang-toggle--floating {
  background: var(--surface, #fff);
  box-shadow: var(--shadow, 0 1px 3px rgba(0, 0, 0, 0.12));
}

/*
 * Fallback bila base.css tidak dimuatkan (cth. login.css sahaja): tanpa ini
 * .kb-surface-btn tiada gaya dan butang nampak seperti butang mentah pelayar.
 */
.kb-lang-toggle__btn:not(.is-active) {
  color: var(--text-muted, #6b7280);
}

.kb-lang-toggle__btn.is-active {
  color: var(--text, #111827);
  background: var(--kb-control-surface, #fff);
  border-color: var(--kb-control-border, #d1d5db);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}

@media (max-width: 640px) {
  .kb-lang-toggle__btn {
    min-width: 2.6rem;
    min-height: 2.5rem;
    padding: 0.4rem 0.55rem;
    font-size: 0.78rem;
  }

  .kb-app-refresh {
    width: 2.5rem;
    height: 2.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .kb-app-refresh.is-busy .kb-app-refresh__icon {
    animation: none;
  }
}