/* ==========================================================
   Preview — css/apps/preview.css
   All selectors scoped under .app-preview so nothing leaks.
   Uses shell CSS custom properties for automatic dark-mode.
   ========================================================== */

/* ---- Root layout ---- */
.app-preview {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  background: var(--win-bg);
  color: var(--win-fg);
  font-family: var(--font-system);
  font-size: 13px;
}

.app-preview .pv-root {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

/* ---- Toolbar ---- */
.app-preview .pv-toolbar {
  display: flex;
  align-items: center;
  gap: 0;
  height: 40px;
  padding: 0 10px;
  background: var(--titlebar-bg);
  border-bottom: 0.5px solid var(--win-border);
  flex: 0 0 auto;
  user-select: none;
}

.app-preview .pv-tl-group {
  display: flex;
  align-items: center;
  gap: 2px;
  flex: 0 0 auto;
}

.app-preview .pv-tl-right {
  margin-left: auto;
}

.app-preview .pv-tl-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
}

.app-preview .pv-doc-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--win-fg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 240px;
}

/* Toolbar buttons */
.app-preview .pv-tb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 26px;
  padding: 0 6px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--win-fg);
  background: none;
  border: none;
  cursor: default;
  transition: background 0.1s ease;
  white-space: nowrap;
}

.app-preview .pv-tb-btn:hover:not(:disabled) {
  background: var(--win-hover);
}

.app-preview .pv-tb-btn:active:not(:disabled) {
  background: rgba(0,0,0,0.10);
}

.app-preview .pv-tb-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.app-preview .pv-tb-btn.pv-tb-active {
  background: rgba(10, 132, 255, 0.14);
  color: var(--accent);
}

.app-preview .pv-nav-btn {
  font-size: 18px;
  font-weight: 300;
  padding: 0 4px;
}

/* Zoom label (clickable) */
.app-preview .pv-zoom-label {
  min-width: 42px;
  text-align: center;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--win-muted);
  padding: 2px 4px;
  border-radius: 5px;
}

.app-preview .pv-zoom-label:hover {
  background: var(--win-hover);
  color: var(--win-fg);
}

/* Toolbar separator */
.app-preview .pv-tb-sep {
  width: 0.5px;
  height: 16px;
  background: var(--win-border);
  margin: 0 4px;
  flex: 0 0 auto;
}

/* ---- Markup toolbar ---- */
.app-preview .pv-markup-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  background: var(--card-bg);
  border-bottom: 0.5px solid var(--win-border);
  flex: 0 0 auto;
  flex-wrap: wrap;
}

.app-preview .pv-markup-bar.pv-hidden {
  display: none;
}

.app-preview .pv-mu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 28px;
  padding: 0 8px;
  border-radius: 7px;
  font-size: 13px;
  color: var(--win-fg);
  background: none;
  border: none;
  cursor: default;
  transition: background 0.1s;
}

.app-preview .pv-mu-btn:hover {
  background: var(--win-hover);
}

.app-preview .pv-mu-btn.pv-mu-active {
  background: rgba(10, 132, 255, 0.15);
  color: var(--accent);
}

.app-preview .pv-mu-btn.pv-mu-done {
  margin-left: auto;
  padding: 0 14px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 12.5px;
}

.app-preview .pv-mu-btn.pv-mu-done:hover {
  background: var(--accent-light);
}

.app-preview .pv-mu-sep {
  width: 0.5px;
  height: 18px;
  background: var(--win-border);
  margin: 0 4px;
}

.app-preview .pv-mu-label {
  font-size: 11px;
  color: var(--win-muted);
  margin-right: 2px;
}

/* Colour swatches */
.app-preview .pv-mu-color {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: default;
  flex: 0 0 auto;
}

.app-preview .pv-mu-red   { background: #ff3b30; }
.app-preview .pv-mu-blue  { background: #0a84ff; }
.app-preview .pv-mu-green { background: #34c759; }
.app-preview .pv-mu-yel   { background: #ffd60a; }

.app-preview .pv-mu-color.pv-mu-color-active {
  border-color: var(--win-fg);
  box-shadow: 0 0 0 1px var(--win-border);
}

/* ---- Body (sidebar + viewer) ---- */
.app-preview .pv-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

/* ---- Sidebar ---- */
.app-preview .pv-sidebar {
  width: 148px;
  flex: 0 0 148px;
  display: flex;
  flex-direction: column;
  background: var(--sidebar-bg);
  border-right: 0.5px solid var(--sidebar-border);
  overflow: hidden;
  transition: width 0.18s var(--ease-out), flex-basis 0.18s var(--ease-out);
}

.app-preview .pv-sidebar.pv-sidebar-hidden {
  width: 0;
  flex-basis: 0;
  border-right-width: 0;
}

.app-preview .pv-sb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  border-bottom: 0.5px solid var(--sidebar-border);
  flex: 0 0 auto;
}

.app-preview .pv-sb-title {
  font-size: 11px;
  font-weight: 600;
  color: var(--win-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.app-preview .pv-sb-sort-btn {
  font-size: 12px;
  color: var(--win-muted);
  background: none;
  border: none;
  cursor: default;
  border-radius: 4px;
  padding: 2px 4px;
}

.app-preview .pv-sb-sort-btn:hover {
  background: var(--win-hover);
}

.app-preview .pv-sb-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.app-preview .pv-sb-list::-webkit-scrollbar { width: 5px; }
.app-preview .pv-sb-list::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 3px;
}

.app-preview .pv-sb-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 4px;
  border-radius: 8px;
  cursor: default;
  transition: background 0.1s;
}

.app-preview .pv-sb-item:hover {
  background: var(--win-hover);
}

.app-preview .pv-sb-item.pv-sb-active {
  background: rgba(10, 132, 255, 0.14);
}

.app-preview .pv-sb-item.pv-sb-active .pv-sb-name {
  color: var(--accent);
}

.app-preview .pv-sb-thumb {
  width: 104px;
  height: 76px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.18);
  overflow: hidden;
  flex: 0 0 auto;
  transition: transform 0.12s ease;
}

.app-preview .pv-sb-item:hover .pv-sb-thumb {
  transform: scale(1.03);
}

.app-preview .pv-sb-thumb-pdf {
  background: linear-gradient(160deg, #e8ecf0, #cfd5db);
  font-size: 36px;
}

.app-preview .pv-sb-name {
  font-size: 10.5px;
  color: var(--win-fg);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  width: 100%;
  padding: 0 2px;
}

/* ---- Viewer area ---- */
.app-preview .pv-viewer-wrap {
  flex: 1;
  overflow: auto;
  background: var(--win-bg);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  position: relative;   /* anchor for pv-recent-panel absolute overlay */
  min-width: 0;
}

.app-preview .pv-viewer-wrap::-webkit-scrollbar { width: 9px; height: 9px; }
.app-preview .pv-viewer-wrap::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 5px;
  border: 2px solid transparent;
  background-clip: padding-box;
}

.app-preview .pv-viewer {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 100%;
  min-height: 100%;
  padding: 30px;
}

/* The canvas: gets transform applied by JS */
.app-preview .pv-canvas {
  transition: transform 0.15s var(--ease-out);
  will-change: transform;
  transform-origin: center center;
}

/* Image canvas */
.app-preview .pv-canvas-img {
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-preview .pv-img-display {
  width: 460px;
  height: 340px;
  border-radius: 10px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.28), 0 4px 12px rgba(0,0,0,0.18);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  position: relative;
  overflow: hidden;
}

.app-preview .pv-img-emoji {
  font-size: 88px;
  line-height: 1;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.25));
}

.app-preview .pv-img-meta {
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
  letter-spacing: 0.2px;
}

/* PDF canvas */
.app-preview .pv-canvas-pdf {
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.app-preview .pv-pdf-page {
  width: 500px;
  min-height: 640px;
  background: var(--win-bg);
  border-radius: 4px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.22), 0 2px 8px rgba(0,0,0,0.14);
  padding: 56px 54px;
  color: var(--win-fg);
  font-size: 13.5px;
  line-height: 1.7;
  position: relative;
  border: 0.5px solid var(--win-border);
}

.app-preview .pv-pdf-pagestamp {
  position: absolute;
  bottom: 22px;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 11px;
  color: var(--win-muted);
  letter-spacing: 0.3px;
}

/* PDF navigation bar */
.app-preview .pv-pdf-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 6px 0;
  background: var(--titlebar-bg);
  border-top: 0.5px solid var(--win-border);
  flex: 0 0 auto;
}

.app-preview .pv-pdf-nav.pv-hidden {
  display: none;
}

.app-preview .pv-pdf-info {
  font-size: 12px;
  color: var(--win-muted);
  font-variant-numeric: tabular-nums;
  min-width: 80px;
  text-align: center;
}

/* ---- Recent panel ---- */
.app-preview .pv-recent-panel {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 40px 30px;
  gap: 16px;
  background: var(--win-bg);
  overflow-y: auto;
  z-index: 2;
}

.app-preview .pv-recent-panel.pv-hidden {
  display: none;
}

.app-preview .pv-recent-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--win-fg);
  align-self: flex-start;
}

.app-preview .pv-recent-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
  max-width: 400px;
}

.app-preview .pv-recent-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: default;
  transition: background 0.1s;
}

.app-preview .pv-recent-item:hover {
  background: var(--win-hover);
}

.app-preview .pv-recent-icon {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.app-preview .pv-recent-icon-pdf {
  background: linear-gradient(135deg, #e8ecf0, #cfd5db);
}

.app-preview .pv-recent-name {
  font-size: 13px;
  color: var(--win-fg);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-preview .pv-recent-hint {
  font-size: 12px;
  color: var(--win-muted);
  align-self: flex-start;
  max-width: 400px;
}

/* ---- Utility ---- */
.app-preview .pv-hidden {
  display: none !important;
}

/* Dark-mode refinements */
html.dark .app-preview .pv-pdf-page {
  background: #28282a;
}

html.dark .app-preview .pv-sb-thumb-pdf {
  background: linear-gradient(160deg, #3a3a3d, #2e2e31);
}

html.dark .app-preview .pv-recent-icon-pdf {
  background: linear-gradient(135deg, #3a3a3d, #2e2e31);
}

/* Vibrancy on sidebar (matches system shell) */
.app-preview .pv-sidebar {
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}