/* Viewers — modern flat design */
.viewer-app {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 0;
  background: var(--space-bg-window, var(--surface-solid));
}

.pdf-viewer-app .viewer-pdf-frame {
  flex: 1;
  width: 100%;
  min-height: 0;
  border: none;
  background: var(--space-bg-window-active, #525659);
}

.viewer-pdf-pages {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 14px 0 24px;
  min-width: min-content;
}

.viewer-pdf-page {
  display: block;
  max-width: 100%;
  height: auto;
  box-shadow: var(--space-shadow-lg, 0 16px 48px rgba(0,0,0,0.16));
  background: var(--space-bg-card, #fff);
  border-radius: var(--space-radius-sm, 4px);
}

.viewer-pdf-wrap {
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: flex;
  justify-content: center;
  background: var(--space-bg-window-active, #525659);
}

.viewer-pdf-wrap .viewer-pdf-frame {
  width: 100%;
  height: 100%;
  min-height: 480px;
  border: none;
}

.viewer-preview-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 14px 16px;
}

.viewer-preview-text,
.viewer-preview-hex {
  margin: 0;
  font-family: ui-monospace, 'SF Mono', Menlo, monospace;
  font-size: 13px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--space-bg-card, #fff);
  padding: 16px;
  border-radius: var(--space-radius-md, 8px);
  border: 1px solid var(--space-border-subtle, rgba(0,0,0,0.06));
}

.viewer-preview-info {
  font-size: 13px;
  line-height: 1.6;
  color: var(--space-text-secondary, #6b7280);
}

.preview-meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 14px;
  font-size: 12px;
  padding: 0 14px 10px;
}

.preview-meta dt {
  color: var(--space-text-secondary, #6b7280);
  font-weight: 500;
}

.preview-meta-inline {
  border-bottom: 1px solid var(--space-border-subtle, rgba(0,0,0,0.06));
}

.preview-mode-tabs {
  display: flex;
  gap: 4px;
}

.preview-mode-tabs .app-btn.active {
  background: var(--space-accent, #0066ff);
  color: var(--space-text-inverse, #fff);
  font-weight: 600;
  border-color: transparent;
}

.viewer-image-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--space-bg-window-active, #0a0a0c);
  padding: 12px;
}

.viewer-image-stage img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: var(--space-radius-sm, 2px);
}

.viewer-audio-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 28px;
}

.viewer-audio-icon {
  font-size: 52px;
  opacity: 0.5;
}

.viewer-audio {
  width: 100%;
  max-width: 400px;
}

.viewer-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--space-border-subtle, rgba(0,0,0,0.06));
  background: var(--space-bg-toolbar, rgba(248,248,249,0.96));
}

[data-theme="dark"] .viewer-toolbar {
  background: rgba(36, 36, 40, 0.95);
}

.viewer-toolbar button {
  min-height: 30px;
  padding: 5px 12px;
  border: 1px solid var(--space-border-default, rgba(0,0,0,0.1));
  border-radius: var(--space-radius-md, 8px);
  background: var(--space-bg-card, #fff);
  font: 500 13px / 1.4 -apple-system, BlinkMacSystemFont, sans-serif;
  cursor: default;
  transition: background 0.1s ease, border-color 0.15s ease;
}

[data-theme="dark"] .viewer-toolbar button {
  background: rgba(50, 50, 54, 0.8);
  border-color: var(--space-border-default, rgba(255,255,255,0.1));
}

.viewer-toolbar button:hover {
  background: var(--space-bg-hover, rgba(0,0,0,0.04));
}

.viewer-slider {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: var(--space-text-secondary, #6b7280);
}

.viewer-slider input {
  width: 80px;
  accent-color: var(--space-accent, #0066ff);
}

.viewer-stage {
  flex: 1;
  min-height: 0;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: var(--space-bg-window-active, #0a0a0c);
}

.viewer-stage canvas {
  max-width: 100%;
  max-height: 100%;
  box-shadow: var(--space-shadow-md, 0 8px 24px rgba(0,0,0,0.12));
  border-radius: var(--space-radius-sm, 2px);
}

.viewer-video {
  flex: 1;
  width: 100%;
  min-height: 0;
  background: var(--space-bg-window-active, #000);
}

.viewer-textarea {
  flex: 1;
  min-height: 0;
  border: none;
  resize: none;
  padding: 14px 16px;
  font: 13px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace;
  background: var(--space-bg-card, #fff);
  color: var(--space-text-primary, #111827);
  tab-size: 2;
}

.viewer-richtext {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 16px 18px;
  outline: none;
  background: var(--space-bg-card, #fff);
  color: var(--space-text-primary, #111);
}

[data-theme="dark"] .viewer-richtext {
  background: var(--space-bg-window-active, #1e1e22);
  color: var(--space-text-primary, #eee);
}

.richtext-bar button {
  min-width: 32px;
  padding: 4px 8px;
}

.viewer-hint {
  padding: 8px 12px;
  font-size: 11px;
  color: var(--space-text-tertiary, #9ca3af);
  border-top: 1px solid var(--space-border-subtle, rgba(0,0,0,0.06));
}

.zip-file-list {
  flex: 1;
  overflow: auto;
  list-style: none;
  margin: 0;
  padding: 10px 12px;
}

.zip-file-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 6px 4px;
  border-bottom: 1px solid var(--space-border-subtle, rgba(0,0,0,0.06));
  font-size: 13px;
}

.zip-file-list li span {
  color: var(--space-text-secondary, #6b7280);
  white-space: nowrap;
}

.zip-error {
  color: var(--space-error, #dc2626);
}

.office-sheet-list {
  list-style: disc;
  padding-left: 24px;
  font-size: 13px;
}

.office-sheet-list li {
  margin-bottom: 6px;
}