.selection-translation-popover {
  position: fixed;
  z-index: 70;
  display: flex;
  flex-direction: column;
  width: min(380px, calc(100vw - 16px));
  max-width: calc(100vw - 16px);
  max-height: min(480px, calc(100dvh - 16px));
  overflow: hidden;
  border: 1px solid var(--ui-dialog-border, var(--ui-border-strong));
  border-radius: 8px;
  background: var(--ui-surface, #fff);
  box-shadow: 0 10px 30px var(--ui-dialog-shadow, rgb(0 0 0 / 20%));
  color: var(--ui-text);
  font-size: 14px;
}

.selection-translation-popover[hidden] {
  display: none;
}

.selection-translation-popover:focus {
  outline: none;
}

.selection-translation-header {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 8px 4px 14px;
}

.selection-translation-header h2 {
  margin: 0;
  color: var(--ui-text);
  font-size: 15px;
  font-weight: 600;
}

.selection-translation-icon-button {
  display: inline-flex;
  flex: 0 0 36px;
  align-items: center;
  justify-content: center;
  width: 36px;
  min-width: 36px;
  height: 36px;
  min-height: 36px;
  padding: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--ui-text-soft);
  font: inherit;
  font-size: 22px;
  cursor: pointer;
}

.selection-translation-icon-button:hover {
  background: var(--ui-surface-muted);
  color: var(--ui-text);
}

.selection-translation-icon-button svg {
  width: 19px;
  height: 19px;
  pointer-events: none;
}

.selection-translation-icon-button:focus-visible,
.selection-translation-popover .button:focus-visible,
.selection-translation-controls select:focus-visible,
.selection-translation-result:focus-visible {
  outline: 2px solid var(--ui-focus);
  outline-offset: 2px;
}

.selection-translation-controls {
  display: flex;
  flex: none;
  align-items: end;
  justify-content: space-between;
  gap: 8px;
  padding: 4px 14px 8px;
}

.selection-translation-controls label {
  display: grid;
  gap: 3px;
  color: var(--ui-text-soft);
  font-size: 12px;
}

.selection-translation-controls select {
  min-width: 112px;
  min-height: 36px;
  padding: 4px 28px 4px 8px;
  border: 1px solid var(--ui-input-border);
  border-radius: 4px;
  background: var(--ui-input-bg);
  color: var(--ui-text);
  font: inherit;
  font-size: 14px;
}

.selection-translation-controls .button {
  min-height: 36px;
}

.selection-translation-meta,
.selection-translation-status {
  margin: 0;
  padding: 0 14px;
  overflow-wrap: anywhere;
}

.selection-translation-meta {
  padding-bottom: 5px;
  color: var(--ui-text-muted);
  font-size: 12px;
}

.selection-translation-status {
  min-height: 20px;
  padding-bottom: 6px;
  color: var(--ui-text-soft);
  line-height: 1.45;
}

.selection-translation-status[data-kind="error"] {
  color: var(--ui-danger);
}

.selection-translation-result {
  min-height: 56px;
  max-height: 260px;
  margin: 0 14px 8px;
  padding: 10px;
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  background: var(--ui-surface-subtle);
  color: var(--ui-text);
  line-height: 1.6;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  -webkit-overflow-scrolling: touch;
}

.selection-translation-result[hidden],
.selection-translation-actions [hidden] {
  display: none;
}

.selection-translation-actions {
  display: flex;
  flex: none;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 4px 8px 8px 14px;
  border-top: 1px solid var(--ui-border);
}

.selection-translation-actions .button {
  min-height: 36px;
}

.selection-translation-source {
  min-width: 0;
  margin-inline-start: auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

@media (max-width: 640px) {
  .selection-translation-popover {
    top: auto;
    right: max(8px, env(safe-area-inset-right, 0px));
    bottom: calc(68px + env(safe-area-inset-bottom, 0px) + var(--selection-translation-keyboard-inset, 0px));
    left: max(8px, env(safe-area-inset-left, 0px));
    width: auto;
    max-width: none;
    max-height: calc(var(--mobile-viewport-height, 100dvh) - 88px - env(safe-area-inset-bottom, 0px));
    border-radius: 10px;
  }

  .reader-panel:fullscreen .selection-translation-popover {
    bottom: calc(8px + env(safe-area-inset-bottom, 0px) + var(--selection-translation-keyboard-inset, 0px));
  }

  .selection-translation-header {
    padding-top: 6px;
  }

  .selection-translation-icon-button {
    flex-basis: 44px;
    width: 44px;
    min-width: 44px;
    height: 44px;
    min-height: 44px;
  }

  .selection-translation-controls select,
  .selection-translation-controls .button,
  .selection-translation-actions .button {
    min-height: 44px;
  }

  .selection-translation-result {
    max-height: min(42dvh, 320px);
  }
}

@media (pointer: coarse) {
  .selection-translation-icon-button {
    flex-basis: 44px;
    width: 44px;
    min-width: 44px;
    height: 44px;
    min-height: 44px;
  }

  .selection-translation-controls select,
  .selection-translation-controls .button,
  .selection-translation-actions .button {
    min-height: 44px;
  }
}

.selection-translation-popover[data-mode="device"] {
  width: min(540px, calc(100vw - 16px));
  max-height: min(680px, calc(100dvh - 16px));
}

.selection-translation-device[hidden],
.selection-translation-controls[hidden],
.selection-translation-meta[hidden],
.selection-translation-status[hidden],
.selection-translation-actions[hidden] {
  display: none;
}

.selection-translation-device {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.device-ai {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px 14px 14px;
}

.device-ai h3,
.device-ai p {
  margin: 0;
}

.device-ai-original,
.device-ai-result {
  display: grid;
  gap: 6px;
}

.device-ai h3 {
  color: var(--ui-text);
  font-size: 13px;
  font-weight: 600;
}

.device-ai-original > p {
  color: var(--ui-text-muted);
  font-size: 12px;
}

.device-ai-text {
  max-height: 180px;
  padding: 10px;
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  background: var(--ui-surface-subtle);
  color: var(--ui-text);
  line-height: 1.55;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  -webkit-overflow-scrolling: touch;
}

.device-ai-result .device-ai-text {
  max-height: 240px;
  background: var(--ui-input-bg);
}

.device-ai-fields {
  display: grid;
  grid-template-columns: minmax(120px, 0.6fr) minmax(0, 1.4fr);
  gap: 10px;
}

.device-ai-fields label,
.device-ai-credential {
  display: grid;
  gap: 4px;
  min-width: 0;
  color: var(--ui-text-soft);
  font-size: 12px;
}

.device-ai input,
.device-ai select {
  width: 100%;
  min-width: 0;
  min-height: 38px;
  padding: 6px 8px;
  border: 1px solid var(--ui-input-border);
  border-radius: 4px;
  background: var(--ui-input-bg);
  color: var(--ui-text);
  font: inherit;
  font-size: 14px;
  box-sizing: border-box;
}

.device-ai-source,
.device-ai-source-option {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
}

.device-ai-source-option {
  min-height: 44px;
  color: var(--ui-text-soft);
  font-size: 12px;
  cursor: pointer;
}

.device-ai-source-option input {
  width: 18px;
  height: 18px;
  min-height: 18px;
  margin: 0;
}

.device-ai .device-ai-source-option {
  flex: 1 1 140px;
  min-width: 140px;
  flex-wrap: nowrap;
  gap: 8px;
  white-space: nowrap;
}

.device-ai .device-ai-source-option input[type="radio"] {
  flex: 0 0 18px;
  width: 18px;
  min-width: 18px;
  max-width: 18px;
  height: 18px;
  min-height: 18px;
  margin: 0;
  padding: 0;
}

.device-ai-capability {
  color: var(--ui-text-muted);
  font-size: 12px;
  line-height: 1.5;
}

.device-ai-notices {
  display: grid;
  gap: 5px;
  padding: 9px 10px;
  border: 1px solid var(--ui-border);
  border-radius: 4px;
  background: var(--ui-surface-subtle);
  color: var(--ui-text-soft);
  font-size: 12px;
  line-height: 1.5;
}

.device-ai-confirm {
  align-self: flex-start;
  min-height: 38px;
}

.device-ai-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.device-ai-actions .button {
  min-height: 36px;
}

.device-ai-status {
  min-height: 18px;
  color: var(--ui-text-soft);
  font-size: 12px;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.device-ai-status[data-kind="error"] {
  color: var(--ui-danger);
}

.device-ai-fallback {
  padding: 12px 14px;
}

.device-ai input:focus-visible,
.device-ai select:focus-visible,
.device-ai .button:focus-visible,
.device-ai-text:focus-visible {
  outline: 2px solid var(--ui-focus);
  outline-offset: 2px;
}

@media (max-width: 640px) {
  .device-ai-fields {
    grid-template-columns: 1fr;
  }

  .device-ai-text {
    max-height: min(30dvh, 220px);
  }

  .device-ai-result .device-ai-text {
    max-height: min(36dvh, 280px);
  }

  .device-ai input,
  .device-ai select,
  .device-ai-confirm,
  .device-ai-actions .button {
    min-height: 44px;
  }
}

@media (pointer: coarse) {
  .device-ai input,
  .device-ai select,
  .device-ai-confirm,
  .device-ai-actions .button {
    min-height: 44px;
  }
}