/* ==========================================================================
   KUTAY OS — Files (Studio HD)
   Folder/file tiles (sized by the icon-size slider through --tile-scale),
   breadcrumbs, the trash view, and the folder-open motion. Sidebar, search
   field, view toggle and empty-state basics come from shell.css's shared
   Finder layout.
   ========================================================================== */

.file-explorer { --tile-scale: 1; }

/* ---- Layout: sidebar stays at tablet widths, goes on phones ---- */
.app-window .files-page { grid-template-columns: 180px minmax(0, 1fr); }
.app-window .files-page > .sidebar { display: block; padding: var(--space-4) var(--space-3); }
.app-window .files-page.sidebar-hidden { grid-template-columns: minmax(0, 1fr); }
.app-window .files-page.sidebar-hidden > .sidebar { display: none; }
@media (min-width: 700px) and (max-width: 1099px) {
  .app-window .files-page { grid-template-columns: 170px minmax(0, 1fr); }
  .app-window .files-page > .sidebar { padding: var(--space-3) var(--space-2); }
}
@media (max-width: 699px) {
  .app-window .files-page, .app-window .files-page.sidebar-hidden { grid-template-columns: minmax(0, 1fr); }
  .app-window .files-page > .sidebar { display: none; }
  .app-window .titlebar [data-toggle-sidebar] { display: none; }
}
.files-page .side-link { cursor: pointer; }
.files-page .side-link.active { color: var(--text); background: color-mix(in srgb, var(--accent) 13%, transparent); }
.files-page .side-link.active .side-symbol, .files-page .side-link.active small { color: var(--accent); }
.files-page .side-link:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.files-page .side-link small { color: var(--text-dim); font-variant-numeric: tabular-nums; }
[data-toggle-sidebar] svg { width: 18px; height: 18px; }
[data-toggle-sidebar][aria-pressed="true"] { color: var(--accent); }

/* ---- Toolbars ---- */
.file-toolbar { flex-wrap: nowrap; min-height: 57px; }
.file-toolbar .bar-btn svg, .files-page .toolbar .bar-btn svg { width: 18px; height: 18px; }
.files-page .bar-btn { cursor: pointer; transition: background var(--dur-fast), color var(--dur-fast), transform var(--dur-fast); }
.files-page .bar-btn:active:not(:disabled) { transform: scale(.94); }
.files-page .bar-btn:disabled { opacity: .35; cursor: default; }
.files-page .bar-btn:focus-visible, .files-page .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.files-page .btn:disabled { opacity: .45; cursor: default; filter: none; }
.file-toolbar [data-open-selected], .file-toolbar [data-empty-bin] { flex-shrink: 0; }

.crumbs-nav { flex: 1; min-width: 0; }
.crumbs-nav ol { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; flex-wrap: nowrap; overflow: hidden; }
.crumbs-nav li { display: flex; align-items: center; min-width: 0; flex-shrink: 1; }
.crumbs-nav li:last-child { flex-shrink: 0; max-width: 60%; }
.crumb { font-size: 13px; padding: 6px 8px; border-radius: 7px; color: var(--text-muted); background: transparent; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
button.crumb { cursor: pointer; transition: background var(--dur-fast), color var(--dur-fast); }
button.crumb:hover { background: rgba(255, 255, 255, .07); color: var(--text); }
button.crumb:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.crumb.current { color: var(--text); font-weight: 600; }
.crumb-sep { color: var(--text-dim); padding: 0 1px; }

.files-page .toolbar { flex-wrap: nowrap; }
.files-page .view-toggle button { cursor: pointer; }
.files-page .view-toggle button:hover { color: var(--text); }
.files-page .view-toggle button.on { color: var(--accent); background: color-mix(in srgb, var(--accent) 16%, transparent); }
.files-page .view-toggle button:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.files-page .search:focus { border-color: color-mix(in srgb, var(--accent) 55%, transparent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 14%, transparent); }

.file-size-control { display: flex; align-items: center; gap: 6px; height: 36px; padding: 0 10px; flex-shrink: 0; border-radius: 9px; border: 1px solid var(--line-2); color: var(--text-dim); font-size: 13px; }
.file-size-control input { width: 88px; accent-color: var(--accent); cursor: pointer; }
.file-size-control input:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.folder-grid[data-view="list"] ~ * .file-size-control { opacity: .5; }

/* ---- Tiles ---- */
.folder-grid {
  flex: 1; min-height: 0; overflow: auto; align-content: start;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(calc(108px * var(--tile-scale)), 1fr));
  grid-auto-rows: max-content; gap: 10px; padding: 18px;
}
.folder-grid[data-view="list"] { grid-template-columns: minmax(0, 1fr); gap: 2px; padding: var(--space-3); }
.folder-grid[data-view="gallery"] { grid-template-columns: repeat(auto-fill, minmax(calc(156px * var(--tile-scale)), 1fr)); gap: var(--space-5) var(--space-4); }

.file-item {
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px;
  padding: 14px 8px 12px; border-radius: var(--r-md); border: 1px solid transparent; min-width: 0; cursor: default;
  transition: background var(--dur-fast), border-color var(--dur-fast), transform var(--dur-base) var(--ease-out), opacity var(--dur-base);
}
.file-item:hover { background: rgba(255, 255, 255, .06); }
.file-item:hover .tile-folder, .file-item:hover .file-doc { transform: translateY(-3px); }
.file-item:active .tile-folder, .file-item:active .file-doc { transform: translateY(0) scale(.96); }
.file-item:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.file-item.is-selected { background: color-mix(in srgb, var(--accent) 12%, transparent) !important; border-color: color-mix(in srgb, var(--accent) 50%, transparent); }
.file-item.drop-target { outline: 2px dashed var(--accent); outline-offset: -2px; background: color-mix(in srgb, var(--accent) 16%, transparent) !important; }
.file-item.drop-target .tile-folder { transform: scale(1.08); }
.file-item.is-cut { opacity: .4; }
.file-item.is-new { animation: tileNew 1.1s var(--ease-out); }
.file-item.is-leaving { opacity: 0; transform: scale(.85); }
@keyframes tileNew { 0% { transform: scale(.7); opacity: 0; } 45% { transform: scale(1.06); opacity: 1; } 100% { transform: none; } }
.file-item .file-name { font-size: 13px; font-weight: 400; line-height: 1.3; overflow-wrap: anywhere; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.file-item.is-selected .file-name { font-weight: 600; }
.file-item small { font-size: 11px; color: var(--text-muted); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

.tile-folder {
  width: calc(58px * var(--tile-scale)); height: calc(44px * var(--tile-scale)); margin-top: 6px; border-radius: 8px; position: relative; flex-shrink: 0;
  background: linear-gradient(#6f7a87, #49515e); box-shadow: inset 0 1px rgba(255, 255, 255, .35), 0 8px 16px rgba(0, 0, 0, .22);
  transition: transform var(--dur-base) var(--ease-out);
}
.tile-folder::before { content: ""; position: absolute; left: 5px; top: -6px; width: 44%; height: 8px; border-radius: 6px 6px 0 0; background: inherit; }
.tile-folder.orange { background: linear-gradient(#ffa45e, #d76d24); }
.tile-folder.blue { background: linear-gradient(#72c2ff, #2d82c7); }
.tile-folder.yellow { background: linear-gradient(#ffdd8a, #d9a233); }

.file-doc {
  width: calc(50px * var(--tile-scale)); height: calc(50px * var(--tile-scale)); border-radius: 10px; flex-shrink: 0; overflow: hidden;
  display: grid; place-items: center; font-size: 11px; font-weight: 700; letter-spacing: .04em;
  background: rgba(255, 255, 255, .08); border: 1px solid var(--line); transition: transform var(--dur-base) var(--ease-out);
}
/* Every glyph sits in the same fixed box so labels line up across a row. */
.tile-glyph { display: flex; align-items: flex-end; justify-content: center; height: calc(62px * var(--tile-scale)); flex-shrink: 0; }
.folder-grid[data-view="gallery"] .tile-glyph { height: calc(92px * var(--tile-scale)); width: 100%; }
.folder-grid[data-view="list"] .tile-glyph { height: 32px; align-items: center; }
.file-item:hover .tile-glyph > *, .file-item:active .tile-glyph > * { will-change: transform; }
.file-doc.bin { color: var(--text-muted); }
.file-doc.bin svg { width: 46%; height: 46%; fill: none; stroke: currentColor; stroke-width: 1.6; }
.file-doc.bin.full { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
/* Documents read as paper, like the original's final Finder. */
.file-doc.doc-paper { width: calc(46px * var(--tile-scale)); height: calc(58px * var(--tile-scale)); border-radius: 8px; border: 0; font-size: 9px; color: #252a30; background: linear-gradient(135deg, #efefef, #aab0b9); box-shadow: 0 6px 14px rgba(0, 0, 0, .22); }
.file-doc.media { width: calc(64px * var(--tile-scale)); height: calc(50px * var(--tile-scale)); border-radius: 8px; padding: 0; }
.file-doc img { width: 100%; height: 100%; object-fit: cover; display: block; }

.folder-grid[data-view="list"] .file-item { display: grid; grid-template-columns: 40px minmax(0, 1fr) minmax(0, 1.2fr); align-items: center; text-align: left; gap: 12px; padding: 8px 12px; border-radius: var(--r-sm); }
.folder-grid[data-view="list"] .tile-folder { width: 30px; height: 23px; margin: 4px 0 0; justify-self: center; }
.folder-grid[data-view="list"] .tile-folder::before { left: 3px; top: -4px; height: 5px; }
.folder-grid[data-view="list"] .file-doc { width: 30px; height: 30px; font-size: 9px; justify-self: center; }
.folder-grid[data-view="list"] .file-doc.doc-paper { width: 24px; height: 30px; font-size: 7px; }
.folder-grid[data-view="list"] .file-doc.media { width: 40px; height: 30px; }
.folder-grid[data-view="list"] .file-name { -webkit-line-clamp: 1; }
.folder-grid[data-view="list"] small { -webkit-line-clamp: 1; text-align: right; }
.folder-grid[data-view="list"] .file-item:hover .tile-folder, .folder-grid[data-view="list"] .file-item:hover .file-doc { transform: none; }

.folder-grid[data-view="gallery"] .tile-folder { width: calc(84px * var(--tile-scale)); height: calc(64px * var(--tile-scale)); }
.folder-grid[data-view="gallery"] .file-doc { width: calc(84px * var(--tile-scale)); height: calc(84px * var(--tile-scale)); font-size: 13px; }
.folder-grid[data-view="gallery"] .file-doc.doc-paper { width: calc(68px * var(--tile-scale)); height: calc(86px * var(--tile-scale)); font-size: 11px; }
.folder-grid[data-view="gallery"] .file-doc.media { width: 100%; height: auto; aspect-ratio: 1.4; }

/* ---- Empty states ---- */
.folder-grid:has(> .empty-state) { display: flex; }
.files-page .empty-state { margin: auto; display: flex; flex-direction: column; align-items: center; gap: 6px; max-width: 380px; }
.files-page .empty-state p { margin: 0 0 8px; }
.files-page .empty-state .tile-folder { opacity: .5; margin-bottom: 10px; }
.empty-glyph { font-size: 30px; color: var(--text-dim); line-height: 1; margin-bottom: 6px; }

/* ---- Trash ---- */
.bin-view { padding: var(--space-5); overflow: auto; flex: 1; min-height: 0; display: flex; flex-direction: column; }
.bin-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.bin-list li { display: flex; align-items: center; gap: 14px; padding: 12px; border: 1px solid var(--line-2); border-radius: var(--r-md); background: rgba(255, 255, 255, .03); }
.bin-list .tile-folder { width: 36px; height: 28px; margin: 4px 0 0; }
.bin-list b { font-size: 13px; font-weight: 600; display: block; }
.bin-list small { color: var(--text-muted); font-size: 11px; }
.bin-list > li > div { flex: 1; min-width: 0; }

/* ---- Folder motion: tiles fan in from the direction of travel ---- */
.motion-in .file-item, .motion-in .bin-list li { animation: tileIn .42s var(--ease-out) both; animation-delay: calc(var(--i, 0) * 18ms); }
.motion-out .file-item, .motion-out .bin-list li { animation: tileOut .42s var(--ease-out) both; animation-delay: calc(var(--i, 0) * 18ms); }
.motion-swap .file-item { animation: tileSwap .36s var(--ease-out) both; animation-delay: calc(var(--i, 0) * 14ms); }
.motion-in .crumb.current, .motion-out .crumb.current { animation: tileSwap .3s var(--ease-out) both; }
@keyframes tileIn { from { opacity: 0; transform: translateX(22px) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes tileOut { from { opacity: 0; transform: translateX(-22px) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes tileSwap { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .file-item, .tile-folder, .file-doc { transition: none; animation: none !important; } }

/* ---- Phone ---- */
@media (max-width: 600px) {
  .file-size-control { display: none; }
  .files-page .toolbar { gap: 6px; padding: var(--space-2) var(--space-3); }
  .files-page .search { font-size: 16px; height: 40px; }
  .file-toolbar { padding: var(--space-2) var(--space-3); gap: 4px; }
  .file-toolbar .btn { font-size: 12px; padding: 8px 10px; }
  .folder-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-2) 4px; padding: var(--space-3); }
  .folder-grid[data-view="gallery"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .folder-grid:not([data-view="list"]) .file-item small { display: none; }
  .folder-grid[data-view="list"] .file-item { grid-template-columns: 36px minmax(0, 1fr); }
  .folder-grid[data-view="list"] small { display: none; }
  .file-item { padding: 12px 4px 10px; min-height: 96px; }
}

/* Touch: a tap opens directly, so the "Open selected" step is redundant. */
@media (pointer: coarse) { .file-toolbar [data-open-selected] { display: none; } }