/* File Assistant — enterprise-grade UI (Drive / Feishu inspired) */

:root {
  --fa-bg: #f5f6f8;
  --fa-surface: #ffffff;
  --fa-border: #e8eaed;
  --fa-border-strong: #dadce0;
  --fa-text: #202124;
  --fa-text-secondary: #5f6368;
  --fa-text-muted: #80868b;
  --fa-primary: #1a73e8;
  --fa-primary-hover: #1765cc;
  --fa-primary-soft: #e8f0fe;
  --fa-success: #137333;
  --fa-success-soft: #e6f4ea;
  --fa-warn: #b06000;
  --fa-warn-soft: #fef7e0;
  --fa-error: #c5221f;
  --fa-error-soft: #fce8e6;
  --fa-radius: 12px;
  --fa-radius-sm: 8px;
  --fa-shadow-sm: 0 1px 2px rgba(60, 64, 67, 0.08), 0 1px 3px rgba(60, 64, 67, 0.06);
  --fa-shadow-md: 0 4px 16px rgba(60, 64, 67, 0.12);
  --fa-font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

[hidden] {
  display: none !important;
}

.fa-body {
  margin: 0;
  font-family: var(--fa-font);
  background: var(--fa-bg);
  color: var(--fa-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Header */
.fa-header {
  background: var(--fa-surface);
  border-bottom: 1px solid var(--fa-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.fa-header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.fa-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--fa-text);
  text-decoration: none;
}

.fa-brand__mark {
  font-size: 1.1rem;
}

.fa-nav {
  display: flex;
  gap: 0.25rem;
  align-items: center;
  flex-wrap: wrap;
}

.fa-nav a,
.fa-nav .link-btn {
  color: var(--fa-text-secondary);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  font: inherit;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  transition: background 0.15s, color 0.15s;
}

.fa-nav a:hover,
.fa-nav .link-btn:hover {
  background: var(--fa-bg);
  color: var(--fa-text);
}

.fa-nav .member-nav-user {
  color: var(--fa-text);
  font-weight: 600;
}

/* Main layout */
.fa-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.25rem;
}

/* Hero */
.fa-hero {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.fa-hero__badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fa-primary);
  background: var(--fa-primary-soft);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.fa-hero__title {
  margin: 0 0 0.35rem;
  font-size: 1.65rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.fa-hero__desc {
  margin: 0;
  color: var(--fa-text-secondary);
  font-size: 0.92rem;
}

.fa-quota-pill {
  background: var(--fa-surface);
  color: var(--fa-text-secondary);
  padding: 0.55rem 1rem;
  border-radius: var(--fa-radius-sm);
  font-size: 0.82rem;
  border: 1px solid var(--fa-border);
  box-shadow: var(--fa-shadow-sm);
  max-width: 420px;
  line-height: 1.45;
}

.fa-quota-pill.is-ready {
  border-color: var(--fa-primary-soft);
  background: linear-gradient(135deg, #fff 0%, var(--fa-primary-soft) 100%);
}

.fa-quota-pill.is-error {
  background: var(--fa-error-soft);
  color: var(--fa-error);
  border-color: #f5c6c4;
}

/* Status bar */
.fa-status-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.85rem;
  margin-bottom: 0.75rem;
  border-radius: var(--fa-radius-sm);
  font-size: 0.85rem;
  background: var(--fa-primary-soft);
  color: #174ea6;
  border: 1px solid #c2d7f7;
}

.fa-status-bar.is-loading {
  background: var(--fa-primary-soft);
  color: #174ea6;
}

.fa-status-bar.is-success {
  background: var(--fa-success-soft);
  color: var(--fa-success);
  border-color: #b7dfc8;
}

.fa-status-bar.is-error {
  background: var(--fa-error-soft);
  color: var(--fa-error);
  border-color: #f5c6c4;
}

.fa-status-bar__icon {
  flex-shrink: 0;
  font-size: 0.9rem;
}

/* VIP CTA */
.fa-vip-cta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  margin-bottom: 0.75rem;
  border-radius: var(--fa-radius);
  background: linear-gradient(90deg, #fff8e1, #fff3e0);
  border: 1px solid #ffe082;
  box-shadow: var(--fa-shadow-sm);
}

.fa-vip-cta__icon {
  font-size: 1.25rem;
}

.fa-vip-cta__text {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  font-size: 0.85rem;
  color: var(--fa-text-secondary);
}

.fa-vip-cta__text strong {
  color: var(--fa-text);
  font-size: 0.92rem;
}

/* Grid layout */
.fa-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 1rem;
  min-height: calc(100vh - 220px);
}

@media (max-width: 900px) {
  .fa-layout {
    grid-template-columns: 1fr;
    min-height: auto;
  }
}

/* Panel */
.fa-panel {
  background: var(--fa-surface);
  border: 1px solid var(--fa-border);
  border-radius: var(--fa-radius);
  box-shadow: var(--fa-shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.fa-panel__head {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--fa-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.fa-panel__head--preview {
  flex-wrap: wrap;
  align-items: flex-start;
}

.fa-panel__head-main {
  min-width: 0;
}

.fa-panel__title {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
}

.fa-panel__meta {
  color: var(--fa-text-muted);
  font-size: 0.78rem;
  display: block;
  margin-top: 0.1rem;
}

.fa-panel__body {
  padding: 1rem;
  flex: 1;
  min-height: 0;
}

.fa-panel__body--sidebar {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.fa-panel__body--preview {
  overflow: auto;
}

/* Action hints (chips) */
.fa-action-hints {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-left: auto;
}

.fa-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 500;
  white-space: nowrap;
}

.fa-chip--info {
  background: var(--fa-primary-soft);
  color: #174ea6;
}

.fa-chip--ok {
  background: var(--fa-success-soft);
  color: var(--fa-success);
}

.fa-chip--warn {
  background: var(--fa-warn-soft);
  color: var(--fa-warn);
}

.fa-chip--loading {
  background: #f1f3f4;
  color: var(--fa-text-secondary);
}

/* Upload zone */
.fa-upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 1.35rem 1rem;
  border: 1.5px dashed var(--fa-border-strong);
  border-radius: var(--fa-radius-sm);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  flex-shrink: 0;
}

.fa-upload-zone:hover,
.fa-upload-zone.is-dragover {
  border-color: var(--fa-primary);
  background: var(--fa-primary-soft);
  box-shadow: inset 0 0 0 1px rgba(26, 115, 232, 0.08);
}

.fa-upload-zone.is-loading {
  pointer-events: none;
  opacity: 0.85;
  border-color: var(--fa-primary);
  background: var(--fa-primary-soft);
}

.fa-upload-zone.is-loading .fa-upload-zone__visual {
  animation: fa-pulse 1.2s ease-in-out infinite;
}

@keyframes fa-pulse {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.5; transform: translateY(-3px); }
}

.fa-upload-zone__visual {
  color: var(--fa-primary);
  margin-bottom: 0.15rem;
}

.fa-upload-zone__text {
  font-weight: 600;
  font-size: 0.9rem;
}

.fa-upload-zone__hint {
  font-size: 0.75rem;
  color: var(--fa-text-muted);
  max-width: 240px;
  line-height: 1.35;
}

.fa-upload-zone.is-blocked {
  border-color: #f5c6c4;
  background: var(--fa-error-soft);
  cursor: not-allowed;
  opacity: 0.9;
}

.fa-upload-zone__blocked {
  font-size: 0.75rem;
  color: var(--fa-error);
  margin-top: 0.25rem;
}

/* File list */
.fa-file-list {
  list-style: none;
  margin: 0.85rem 0 0;
  padding: 0;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.fa-file-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 1.5rem 0.5rem;
  text-align: center;
  color: var(--fa-text-muted);
  font-size: 0.85rem;
}

.fa-file-empty__icon {
  font-size: 1.5rem;
  opacity: 0.6;
  margin-bottom: 0.25rem;
}

.fa-file-empty small {
  font-size: 0.75rem;
}

.fa-file-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.5rem;
  border-radius: var(--fa-radius-sm);
  cursor: pointer;
  transition: background 0.12s;
  border-left: 3px solid transparent;
}

.fa-file-item:hover {
  background: #f8f9fa;
}

.fa-file-item.is-active {
  background: var(--fa-primary-soft);
  border-left-color: var(--fa-primary);
}

.fa-file-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #fff;
}

.fa-file-icon--text { background: #5f6368; }
.fa-file-icon--subtitle { background: #7b1fa2; }
.fa-file-icon--image { background: #9334e6; }
.fa-file-icon--pdf { background: #ea4335; }
.fa-file-icon--word { background: #4285f4; }
.fa-file-icon--sheet { background: #0f9d58; }
.fa-file-icon--slide { background: #f4b400; color: #3c4043; }
.fa-file-icon--file { background: #80868b; }

.fa-file-item__main {
  min-width: 0;
  flex: 1;
}

.fa-file-item__name {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fa-file-item__meta {
  font-size: 0.72rem;
  color: var(--fa-text-muted);
  margin-top: 0.05rem;
}

.fa-file-item__del {
  flex-shrink: 0;
  border: none;
  background: none;
  color: var(--fa-text-muted);
  cursor: pointer;
  padding: 0.35rem;
  border-radius: 6px;
  display: flex;
  opacity: 0;
  transition: opacity 0.12s, background 0.12s, color 0.12s;
}

.fa-file-item:hover .fa-file-item__del,
.fa-file-item.is-active .fa-file-item__del {
  opacity: 1;
}

.fa-file-item__del:hover {
  background: var(--fa-error-soft);
  color: var(--fa-error);
}

/* Toolbar */
.fa-preview-toolbar {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  padding: 0.55rem 1rem;
  border-bottom: 1px solid var(--fa-border);
  background: #fafbfc;
}

/* Subtitle inline format picker */
.fa-subtitle-formats {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--fa-border);
  background: linear-gradient(180deg, #faf5ff 0%, #fff 100%);
}

.fa-subtitle-formats__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  margin-bottom: 0.65rem;
}

.fa-subtitle-formats__title {
  font-size: 0.9rem;
  color: var(--fa-text);
}

.fa-subtitle-formats__hint {
  font-size: 0.78rem;
  color: var(--fa-text-muted);
  flex: 1;
}

.fa-subtitle-formats__link {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--fa-primary);
  text-decoration: none;
}

.fa-subtitle-formats__link:hover {
  text-decoration: underline;
}

.fa-subtitle-formats__grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.5rem;
}

.fa-subtitle-format-btn {
  padding: 0.65rem 0.5rem;
  border: 2px solid var(--fa-primary);
  border-radius: var(--fa-radius-sm);
  background: #fff;
  color: var(--fa-primary);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.12s, color 0.12s, transform 0.12s;
}

.fa-subtitle-format-btn:hover {
  background: var(--fa-primary);
  color: #fff;
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  .fa-subtitle-formats__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .fa-subtitle-formats__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.fa-toolbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--fa-border-strong);
  background: var(--fa-surface);
  border-radius: var(--fa-radius-sm);
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--fa-text);
  text-decoration: none;
  transition: background 0.12s, border-color 0.12s, box-shadow 0.12s;
}

.fa-toolbar-btn:hover:not(:disabled) {
  background: #f8f9fa;
  border-color: #bdc1c6;
  box-shadow: var(--fa-shadow-sm);
}

.fa-toolbar-btn--primary {
  background: var(--fa-primary);
  border-color: var(--fa-primary);
  color: #fff;
}

.fa-toolbar-btn--primary:hover:not(:disabled) {
  background: var(--fa-primary-hover);
  border-color: var(--fa-primary-hover);
}

.fa-toolbar-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.fa-toolbar-btn__icon {
  font-size: 0.95rem;
  line-height: 1;
}

/* Buttons */
.fa-btn {
  border: 1px solid var(--fa-border-strong);
  background: var(--fa-surface);
  border-radius: var(--fa-radius-sm);
  padding: 0.45rem 0.85rem;
  cursor: pointer;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background 0.12s, border-color 0.12s;
}

.fa-btn:hover:not(:disabled) {
  background: #f8f9fa;
}

.fa-btn--primary {
  background: var(--fa-primary);
  border-color: var(--fa-primary);
  color: #fff;
}

.fa-btn--primary:hover:not(:disabled) {
  background: var(--fa-primary-hover);
}

.fa-btn--sm {
  font-size: 0.82rem;
  padding: 0.38rem 0.7rem;
}

/* Empty state */
.fa-preview-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
  padding: 2rem 1rem;
}

.fa-empty {
  text-align: center;
  max-width: 480px;
}

.fa-empty__icon {
  color: var(--fa-text-muted);
  margin-bottom: 1rem;
}

.fa-empty__title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.fa-empty__desc {
  margin: 0 0 1.5rem;
  color: var(--fa-text-secondary);
  font-size: 0.9rem;
}

.fa-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  text-align: left;
  margin-bottom: 1.25rem;
}

@media (max-width: 640px) {
  .fa-steps {
    grid-template-columns: 1fr;
  }
}

.fa-step {
  display: flex;
  gap: 0.65rem;
  padding: 0.75rem;
  background: #f8f9fa;
  border-radius: var(--fa-radius-sm);
  border: 1px solid var(--fa-border);
}

.fa-step__num {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--fa-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fa-step strong {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.1rem;
}

.fa-step span {
  font-size: 0.75rem;
  color: var(--fa-text-muted);
}

.fa-empty__foot {
  margin: 0;
  font-size: 0.78rem;
  color: var(--fa-text-muted);
}

.fa-muted {
  font-size: 0.85rem;
  color: var(--fa-text-muted);
}

/* Preview pane */
.fa-preview-pane {
  min-height: 400px;
}

.fa-text-editor {
  width: 100%;
  min-height: 420px;
  box-sizing: border-box;
  border: 1px solid var(--fa-border);
  border-radius: var(--fa-radius-sm);
  padding: 0.85rem 1rem;
  font-family: 'Cascadia Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.84rem;
  line-height: 1.55;
  resize: vertical;
  color: var(--fa-text);
  background: #fafbfc;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.fa-text-editor:focus {
  outline: none;
  border-color: var(--fa-primary);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
  background: #fff;
}

.fa-preview-frame {
  width: 100%;
  min-height: 520px;
  border: 1px solid var(--fa-border);
  border-radius: var(--fa-radius-sm);
  background: #fff;
}

.fa-preview-media {
  text-align: center;
  padding: 0.75rem;
  background: #f8f9fa;
  border-radius: var(--fa-radius-sm);
}

.fa-preview-media img {
  max-width: 100%;
  max-height: 560px;
  border-radius: var(--fa-radius-sm);
  box-shadow: var(--fa-shadow-md);
}

.fa-preview-status {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--fa-text-secondary);
}

.fa-preview-status.is-error {
  color: var(--fa-error);
}

.fa-spinner {
  width: 32px;
  height: 32px;
  margin: 0 auto 0.85rem;
  border: 3px solid var(--fa-border);
  border-top-color: var(--fa-primary);
  border-radius: 50%;
  animation: fa-spin 0.75s linear infinite;
}

@keyframes fa-spin {
  to { transform: rotate(360deg); }
}

/* Task banner */
.fa-task-banner {
  padding: 0.65rem 1rem;
  background: var(--fa-primary-soft);
  border-bottom: 1px solid #c2d7f7;
  font-size: 0.85rem;
}

.fa-task-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.fa-task-banner__main {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
  flex: 1;
  min-width: 0;
}

.fa-task-banner__label {
  font-weight: 600;
}

.fa-task-banner__status {
  color: var(--fa-primary);
  font-size: 0.82rem;
}

.fa-task-progress-bar {
  width: 100px;
  height: 5px;
  background: #c2d7f7;
  border-radius: 999px;
  overflow: hidden;
}

.fa-task-progress-bar__fill {
  height: 100%;
  background: var(--fa-primary);
  transition: width 0.2s ease;
  border-radius: 999px;
}

.fa-task-progress {
  color: var(--fa-primary);
  font-weight: 600;
  font-size: 0.8rem;
}

.fa-task-error {
  color: var(--fa-error);
}

.fa-task-banner__actions {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

/* Modal */
.fa-modal {
  position: fixed;
  inset: 0;
  background: rgba(32, 33, 36, 0.5);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9000;
  padding: 1rem;
}

.fa-modal__panel {
  width: min(480px, 100%);
  max-height: min(85vh, 640px);
  background: var(--fa-surface);
  border-radius: var(--fa-radius);
  overflow: hidden;
  box-shadow: var(--fa-shadow-md);
  display: flex;
  flex-direction: column;
}

.fa-modal__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--fa-border);
}

.fa-modal__head h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.fa-modal__sub {
  margin: 0.2rem 0 0;
  font-size: 0.78rem;
  color: var(--fa-text-muted);
}

.fa-modal__close {
  border: none;
  background: none;
  cursor: pointer;
  color: var(--fa-text-muted);
  padding: 0.35rem;
  border-radius: 6px;
  display: flex;
  transition: background 0.12s, color 0.12s;
}

.fa-modal__close:hover {
  background: #f1f3f4;
  color: var(--fa-text);
}

.fa-modal__body {
  padding: 1rem 1.1rem 1.1rem;
  overflow-y: auto;
}

.fa-convert-group {
  margin-bottom: 1rem;
}

.fa-convert-group__title {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  color: var(--fa-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.fa-convert-meta {
  margin-bottom: 0.85rem;
}

.fa-convert-meta p {
  margin: 0 0 0.35rem;
}

.fa-convert-hint {
  font-size: 0.82rem;
  color: var(--fa-primary);
  margin: 0.35rem 0 0;
}

.fa-convert-hint.is-warn {
  color: var(--fa-warn);
}

.fa-convert-options {
  margin-bottom: 0.85rem;
  padding: 0.85rem;
  border: 1px solid var(--fa-border);
  border-radius: var(--fa-radius-sm);
  background: #fafbfc;
}

.fa-convert-options__actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.fa-convert-option-field {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.5rem;
  font-size: 0.85rem;
}

.fa-convert-option-field input[type="range"] {
  width: 140px;
  accent-color: var(--fa-primary);
}

.fa-convert-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.fa-convert-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.1rem;
  text-align: left;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--fa-border);
  border-radius: var(--fa-radius-sm);
  background: var(--fa-surface);
  cursor: pointer;
  font: inherit;
  transition: border-color 0.12s, background 0.12s, box-shadow 0.12s;
}

.fa-convert-item.is-clickable {
  cursor: pointer;
}

.fa-convert-item.is-clickable:hover {
  border-color: var(--fa-primary);
  background: var(--fa-primary-soft);
  box-shadow: var(--fa-shadow-sm);
}

.fa-convert-item.is-locked {
  opacity: 0.88;
}

.fa-convert-item.is-unavailable {
  opacity: 0.55;
  cursor: not-allowed;
}

.fa-convert-item.is-unavailable:hover {
  border-color: var(--fa-border);
  background: var(--fa-surface);
  box-shadow: none;
}

.fa-convert-item strong {
  font-size: 0.88rem;
}

.fa-convert-item span {
  font-size: 0.75rem;
  color: var(--fa-text-muted);
}

.fa-convert-footnote {
  margin: 0.75rem 0 0;
  font-size: 0.75rem;
  color: var(--fa-text-muted);
}

/* Toast */
.fa-toast-host {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.fa-toast {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: #323232;
  color: #fff;
  padding: 0.7rem 1rem;
  border-radius: var(--fa-radius-sm);
  font-size: 0.85rem;
  box-shadow: var(--fa-shadow-md);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.22s ease, transform 0.22s ease;
  pointer-events: auto;
  max-width: min(360px, calc(100vw - 2rem));
}

.fa-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.fa-toast.is-error {
  background: var(--fa-error);
}

.fa-toast.is-success {
  background: #323232;
}

.fa-toast__icon {
  flex-shrink: 0;
  font-weight: 700;
}

.fa-toast__text {
  line-height: 1.35;
}