/* ==========================================================================
   Filedeck — stylesheet

   Theming: every custom property below carries a literal fallback, so the
   stylesheet works standalone. Override any subset to restyle, or map them
   onto an existing design system:

     :root {
       --fd-accent:       #4D5BE3;   Download button, primary accent
       --fd-accent-hover: #707CE9;   Focus ring, active filmstrip border
       --fd-accent-soft:  #C5CBF6;   File-type icon tile
       --fd-accent-bg:    #E5E8FB;   Audio card icon tile
       --fd-font:         ui-sans-serif, system-ui, sans-serif;
       --fd-font-mono:    ui-monospace, SFMono-Regular, monospace;
       --fd-radius-pill:  999px;
       --fd-card-bg:      #FFFFFF;   Document / audio card surface
       --fd-card-text:    #1C1E33;   Card title
       --fd-card-muted:   #71758C;   Card secondary text
     }

   Mapping onto your own tokens is a one-liner each:
     :root { --fd-accent: var(--brand-primary); }

   The dark stage chrome is intentionally fixed rather than theme-aware — an
   attachment viewer wants a neutral dark surround whatever the page does.

   --fd-z (default 2000) sets the stacking order of the whole viewer.
   ========================================================================== */

/* -- root ----------------------------------------------------------------

   Scoped reset. Without this the viewer inherits whatever box model the host
   page happens to use — and .fd-doc and .fd-audio combine width: 100% with
   horizontal padding, so under content-box they overflow their card and their
   contents land off centre. Scoped to .fd-root so nothing leaks outward.
   ---------------------------------------------------------------------- */

.fd-root,
.fd-root *,
.fd-root *::before,
.fd-root *::after { box-sizing: border-box; }

.fd-root {
  position: fixed;
  inset: 0;
  /* Clears Bootstrap's scale, which tops out at 1090 for toasts, with room to
     spare. Not the maximum integer on purpose — a cookie banner or a session
     warning may legitimately need to sit above the viewer. */
  z-index: var(--fd-z, 2000);
  display: flex;
  flex-direction: column;
  background: rgba(12, 13, 24, .86);
  backdrop-filter: blur(14px) saturate(120%);
  animation: fd-in 170ms ease;
}

.fd-root[hidden] { display: none; }

body.fd-lock { overflow: hidden; }

@keyframes fd-in { from { opacity: 0; } to { opacity: 1; } }

/* -- top bar ------------------------------------------------------------- */

.fd-top {
  flex: none;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
}

.fd-file { display: flex; align-items: center; gap: 12px; min-width: 0; flex: 1; }

.fd-file .fic {
  width: 36px; height: 36px;
  border-radius: 9px;
  flex: none;
  background: rgba(255, 255, 255, .08);
  color: var(--fd-accent-soft, #C5CBF6);
  display: flex; align-items: center; justify-content: center;
}

.fd-file .ft { min-width: 0; }

.fd-file .ft b,
.fd-file .ft span {
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fd-file .ft b {
  font: 600 14.5px/1.3 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  color: #F2F3FA;
}

.fd-file .ft span {
  font: 400 12.5px/1.4 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  color: rgba(242, 243, 250, .55);
}

.fd-file .ft span[hidden] { display: none; }

.fd-count {
  flex: none;
  font: 500 12.5px/1 var(--fd-font-mono, ui-monospace, SFMono-Regular, monospace);
  color: rgba(242, 243, 250, .6);
  background: rgba(255, 255, 255, .07);
  border-radius: var(--fd-radius-pill, 999px);
  padding: 6px 10px;
}

.fd-count[hidden] { display: none; }

.fd-acts { display: flex; align-items: center; gap: 6px; flex: none; }

.fd-btn {
  width: 34px; height: 34px;
  border-radius: 9px;
  border: none;
  background: transparent;
  color: rgba(242, 243, 250, .72);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background 110ms ease, color 110ms ease;
}

.fd-btn:hover { background: rgba(255, 255, 255, .11); color: #fff; }

.fd-btn-text {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 13px;
  border-radius: 9px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  font: 600 13px/1 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  background: var(--fd-accent, #4D5BE3);
  color: #fff;
  white-space: nowrap;
  transition: background 110ms ease;
}

.fd-btn-text:hover { background: var(--fd-accent-hover, #707CE9); color: #fff; }

/* -- copy confirmation ---------------------------------------------------
   A small bubble under the button rather than a toast: it's tied to the
   control that caused it, and it can't collide with the stage. */
.fd-btn.is-flashing { position: relative; }

.fd-btn.is-flashing::after {
  content: attr(data-fd-flash);
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  white-space: nowrap;
  padding: 5px 9px;
  border-radius: 7px;
  font: 600 11.5px/1 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  color: #fff;
  background: #2E9E6B;
  pointer-events: none;
}

.fd-btn.is-flashing.did-fail::after { background: #DA4A54; }

.fd-sep {
  width: 1px; height: 20px;
  background: rgba(255, 255, 255, .14);
  margin: 0 4px;
  flex: none;
}

/* -- stage ---------------------------------------------------------------
   Fitting is done here, not in JS: the canvas carries the asset's aspect
   ratio and max-width/max-height do the rest, so a window resize costs
   nothing and zoom is a transform layered on top.
   ---------------------------------------------------------------------- */

.fd-stage {
  flex: 1;
  min-width: 0;
  min-height: 0;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 26px 64px 74px;
  overflow: hidden;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

/* Nothing to clear when the zoom cluster is hidden, so the reserved space
   comes back and the stage centres properly. */
.fd-stage.no-zoom { padding-bottom: 26px; }

/* Native controls handle their own gestures — scrubbing a video or scrolling
   a PDF must not be swallowed by the swipe layer. */
.fd-canvas--pdf,
.fd-canvas--video,
.fd-canvas--audio { touch-action: auto; }

/* The figure is only a positioning context — the slide inside it is the
   column that holds the canvas and caption. */
.fd-figure {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fd-slide {
  /* Springback for an abandoned swipe. Remove this rule and a released drag
     snaps back instantly instead. */
  transition: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 100%;
  max-width: 100%;
  min-height: 0;
}

.fd-canvas {
  position: relative;
  aspect-ratio: var(--fd-ar, 3 / 2);
  height: 100%;
  width: auto;
  max-width: 100%;
  max-height: 100%;
  min-height: 0;
  flex: 0 1 auto;
  border-radius: 10px;
  overflow: hidden;
  background: #0F1020;
  box-shadow: 0 24px 70px rgba(0, 0, 0, .55);
  transform-origin: center center;
  transition: transform 120ms ease;
  will-change: transform;
}

/* -- loading -------------------------------------------------------------
   The spinner is delayed, not conditional. A cached image removes the class
   before the fade-in starts, so it never flashes. */
.fd-canvas.is-loading::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 28px; height: 28px;
  margin: -14px 0 0 -14px;
  border-radius: 50%;
  border: 2.5px solid rgba(255, 255, 255, .16);
  border-top-color: var(--fd-accent-hover, #707CE9);
  animation: fd-spin 700ms linear infinite, fd-fade 160ms ease 220ms both;
}

/* Sheets, documents and PDFs load onto a white page, where the default
   light track would vanish. */
.fd-canvas--fill.is-loading::after,
.fd-canvas--pdf.is-loading::after {
  border-color: rgba(16, 16, 20, .12);
  border-top-color: var(--fd-accent, #4D5BE3);
}

@keyframes fd-spin { to { transform: rotate(360deg); } }
@keyframes fd-fade { from { opacity: 0; } to { opacity: 1; } }

/* -- PDF escape hatch ---------------------------------------------------- */
.fd-pdf-open {
  position: absolute;
  top: 10px; right: 10px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 11px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, .16);
  background: rgba(20, 21, 38, .84);
  color: #EDEEF7;
  text-decoration: none;
  font: 600 12px/1 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  transition: background 110ms ease;
}

.fd-pdf-open:hover { background: rgba(36, 38, 63, .96); color: #fff; }

.fd-pdf-open:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(12, 13, 24, 1), 0 0 0 4px var(--fd-accent-hover, #707CE9);
}

.fd-canvas.can-pan { cursor: grab; }

/* No transition while a finger is down: a 120ms ease on every pointermove
   makes pinch and pan feel like they're lagging behind the touch. */
.fd-canvas.is-gesturing { transition: none; }
.fd-canvas.can-pan.is-gesturing { cursor: grabbing; }

.fd-canvas img.fd-media {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

.fd-slide.is-settling {
  transition: transform 200ms cubic-bezier(.22, .61, .36, 1), opacity 200ms ease;
}

/* Set on slides whose canvas fills the stage — see _renderStage. */
.fd-slide--fill { width: 100%; }

.fd-cap {
  font: 400 12.5px/1.4 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  color: rgba(242, 243, 250, .5);
  text-align: center;
  flex: none;
}

/* -- per-kind canvases --------------------------------------------------- */

/* Custom renderers can ask for the whole stage — a document preview wants
   room and its own scrollbar, not a fitted box. */
.fd-canvas--fill {
  aspect-ratio: auto;
  width: 100%;
  height: 100%;
  background: var(--fd-card-bg, #FFFFFF);
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: auto;
}

/* -- document ------------------------------------------------------------
   A reading column on a page, not a facsimile of Word's layout.
   ---------------------------------------------------------------------- */

.fd-canvas--doc { aspect-ratio: auto; width: 100%; height: 100%; background: var(--fd-card-bg, #FFFFFF); overflow: auto; -webkit-overflow-scrolling: touch; touch-action: auto; }

.fd-page {
  max-width: 76ch;
  margin: 0 auto;
  padding: 48px 40px 64px;
  color: var(--fd-card-text, #1C1E33);
  font: 400 15.5px/1.72 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
}

.fd-page h1, .fd-page h2, .fd-page h3,
.fd-page h4, .fd-page h5, .fd-page h6 {
  line-height: 1.25;
  margin: 1.9em 0 .55em;
  font-weight: 650;
  letter-spacing: -0.012em;
}

.fd-page > :first-child { margin-top: 0; }
.fd-page h1 { font-size: 1.85em; }
.fd-page h2 { font-size: 1.42em; }
.fd-page h3 { font-size: 1.18em; }
.fd-page h4, .fd-page h5, .fd-page h6 { font-size: 1em; }

.fd-page p { margin: 0 0 1em; }
.fd-page .fd-empty-p { margin: 0 0 .6em; min-height: .6em; }
.fd-page .fd-subtitle { color: var(--fd-card-muted, #71758C); font-size: 1.1em; margin-top: -.4em; }

.fd-page ul, .fd-page ol { margin: 0 0 1em; padding-left: 1.6em; }
.fd-page li { margin: .25em 0; }

.fd-page blockquote {
  margin: 1.2em 0;
  padding: .2em 0 .2em 1.1em;
  border-left: 3px solid var(--fd-rule, #E2E4F0);
  color: var(--fd-card-muted, #71758C);
}

.fd-page a { color: var(--fd-accent, #4D5BE3); }

.fd-docimg {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.4em auto;
  border-radius: 4px;
}

.fd-doctable {
  width: 100%;
  border-collapse: collapse;
  margin: 1.3em 0;
  font-size: .94em;
}

.fd-doctable td {
  border: 1px solid var(--fd-rule, #E2E4F0);
  padding: 8px 11px;
  vertical-align: top;
}

.fd-doctable td > p:last-child { margin-bottom: 0; }

.fd-doc-empty, .fd-doc-note {
  color: var(--fd-card-muted, #71758C);
  font-size: .92em;
}

.fd-doc-note { border-top: 1px solid var(--fd-rule, #E2E4F0); margin-top: 2em; padding-top: 1em; }

@media (max-width: 680px) {
  .fd-page { padding: 28px 22px 44px; font-size: 15px; }
}

/* -- spreadsheet --------------------------------------------------------- */

.fd-canvas--sheet { aspect-ratio: auto; width: 100%; height: 100%; background: var(--fd-card-bg, #FFFFFF); }

.fd-sheet { display: flex; flex-direction: column; height: 100%; min-height: 0; }

.fd-sheet-tabs {
  flex: none;
  display: flex;
  gap: 2px;
  padding: 8px 10px 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--fd-rule, #E2E4F0);
  background: var(--fd-card-bg, #FFFFFF);
}

.fd-sheet-tab {
  flex: none;
  border: 1px solid transparent;
  border-bottom: 0;
  background: transparent;
  border-radius: 7px 7px 0 0;
  padding: 8px 14px;
  cursor: pointer;
  font: 500 13px/1 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  color: var(--fd-card-muted, #71758C);
}

.fd-sheet-tab:hover { color: var(--fd-card-text, #1C1E33); }

.fd-sheet-tab.on {
  color: var(--fd-card-text, #1C1E33);
  border-color: var(--fd-rule, #E2E4F0);
  background: var(--fd-sheet-head, #F4F5FA);
}

.fd-sheet-scroll {
  flex: 1;
  min-height: 0;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: auto;
}

.fd-grid {
  border-collapse: separate;
  border-spacing: 0;
  font: 400 13px/1.45 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  color: var(--fd-card-text, #1C1E33);
  white-space: nowrap;
}

.fd-grid th,
.fd-grid td {
  border-right: 1px solid var(--fd-rule, #E2E4F0);
  border-bottom: 1px solid var(--fd-rule, #E2E4F0);
  padding: 6px 11px;
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Column letters and row numbers stay put while the grid scrolls. */
.fd-grid thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--fd-sheet-head, #F4F5FA);
  font: 600 11.5px/1.45 var(--fd-font-mono, ui-monospace, SFMono-Regular, monospace);
  color: var(--fd-card-muted, #71758C);
  text-align: center;
  min-width: 56px;
}

.fd-grid .fd-rownum {
  position: sticky;
  left: 0;
  z-index: 1;
  background: var(--fd-sheet-head, #F4F5FA);
  font: 500 11.5px/1.45 var(--fd-font-mono, ui-monospace, SFMono-Regular, monospace);
  color: var(--fd-card-muted, #71758C);
  text-align: right;
  min-width: 44px;
}

.fd-grid .fd-corner { position: sticky; left: 0; z-index: 3; min-width: 44px; }
.fd-grid .fd-num { text-align: right; font-variant-numeric: tabular-nums; }
.fd-grid tbody tr:hover td { background: var(--fd-sheet-hover, #F8F9FC); }

.fd-sheet-empty,
.fd-sheet-note {
  margin: 0;
  padding: 16px 18px;
  font: 400 13px/1.5 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  color: var(--fd-card-muted, #71758C);
}

.fd-sheet-note { border-top: 1px solid var(--fd-rule, #E2E4F0); }

/* PDF fills the stage — a page-shaped box wastes the space a reader wants. */
.fd-canvas--pdf {
  aspect-ratio: auto;
  width: 100%;
  height: 100%;
  background: #fff;
}

.fd-embed {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}

.fd-canvas--video { background: #000; }

.fd-canvas video.fd-media {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #000;
}

.fd-canvas--audio {
  aspect-ratio: 520 / 260;
  width: min(520px, 100%);
}

.fd-audio {
  width: 100%; height: 100%;
  background: var(--fd-card-bg, #FFFFFF);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 28px;
  text-align: center;
  color: var(--fd-card-muted, #71758C);
}

.fd-audio .dg {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: var(--fd-accent-bg, #E5E8FB);
  color: var(--fd-accent, #4D5BE3);
  display: flex; align-items: center; justify-content: center;
}

.fd-audio b {
  font: 600 15px/1.35 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  color: var(--fd-card-text, #1C1E33);
  word-break: break-word;
}

.fd-audio span { font: 400 13px/1.5 var(--fd-font, ui-sans-serif, system-ui, sans-serif); }
.fd-audio audio { width: 100%; margin-top: 4px; }

/* Non-image attachments, and the fallback when a file can't be rendered. */
.fd-canvas--file,
.fd-canvas.is-error { aspect-ratio: 460 / 560; width: min(460px, 100%); }

.fd-doc {
  width: 100%; height: 100%;
  background: var(--fd-card-bg, #FFFFFF);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 0 24px;
  text-align: center;
  color: var(--fd-card-muted, #71758C);
}

.fd-doc .dg {
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 4px 10px rgba(28, 30, 51, .14));
}

.fd-doc b {
  font: 600 18px/1.3 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  color: var(--fd-card-text, #1C1E33);
  word-break: break-word;
}

.fd-doc span { font: 400 13px/1.5 var(--fd-font, ui-sans-serif, system-ui, sans-serif); }

.fd-doc-dl {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 6px;
  height: 36px;
  padding: 0 16px;
  border-radius: 9px;
  text-decoration: none;
  font: 600 13px/1 var(--fd-font, ui-sans-serif, system-ui, sans-serif);
  background: var(--fd-accent, #4D5BE3);
  color: #fff;
  transition: background 110ms ease;
}

.fd-doc-dl:hover { background: var(--fd-accent-hover, #707CE9); color: #fff; }

.fd-doc-dl:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px var(--fd-accent-hover, #707CE9);
}

/* -- nav arrows ---------------------------------------------------------- */

/* Without an explicit z-index these fall back to DOM order, which puts the
   prev button behind the figure and the next button in front of it. */
.fd-nav {
  position: absolute;
  z-index: 3;
  top: 50%;
  transform: translateY(-50%);
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .14);
  background: rgba(20, 21, 38, .72);
  color: #EDEEF7;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: background 120ms ease;
}

.fd-nav:hover { background: rgba(36, 38, 63, .95); }
.fd-nav.prev { left: 14px; }
.fd-nav.next { right: 14px; }
.fd-nav[disabled] { opacity: .3; cursor: default; }
.fd-nav[hidden] { display: none; }

/* -- zoom cluster -------------------------------------------------------- */

.fd-zoom {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border-radius: var(--fd-radius-pill, 999px);
  background: rgba(20, 21, 38, .8);
  border: 1px solid rgba(255, 255, 255, .1);
}

.fd-zoom button {
  width: 30px; height: 30px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: rgba(242, 243, 250, .8);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}

.fd-zoom button:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.fd-zoom button[disabled] { opacity: .35; cursor: default; }
.fd-zoom button[disabled]:hover { background: transparent; color: rgba(242, 243, 250, .8); }

.fd-zoom[hidden] { display: none; }

.fd-zoom .val {
  font: 500 12px/1 var(--fd-font-mono, ui-monospace, SFMono-Regular, monospace);
  color: rgba(242, 243, 250, .75);
  min-width: 44px;
  text-align: center;
}

/* -- filmstrip ----------------------------------------------------------- */

.fd-strip {
  flex: none;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-top: 1px solid rgba(255, 255, 255, .09);
  overflow-x: auto;
}

.fd-strip[hidden] { display: none; }

.fd-thumb {
  position: relative;
  flex: none;
  width: 76px; height: 54px;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid transparent;
  background: rgba(255, 255, 255, .06);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  color: rgba(242, 243, 250, .5);
  padding: 0;
  opacity: .62;
  transition: border-color 120ms ease, opacity 120ms ease;
}

.fd-thumb:hover { opacity: 1; }
.fd-thumb.on { border-color: var(--fd-accent-hover, #707CE9); opacity: 1; }

.fd-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.fd-thumb .fd-ficon { display: block; filter: drop-shadow(0 2px 5px rgba(0, 0, 0, .35)); }

.fd-thumb .tl {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  font: 600 9.5px/1 var(--fd-font-mono, ui-monospace, SFMono-Regular, monospace);
  color: rgba(255, 255, 255, .85);
  background: linear-gradient(transparent, rgba(0, 0, 0, .7));
  padding: 8px 4px 4px;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* -- focus --------------------------------------------------------------- */

.fd-btn:focus-visible,
.fd-btn-text:focus-visible,
.fd-nav:focus-visible,
.fd-thumb:focus-visible,
.fd-zoom button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(12, 13, 24, 1), 0 0 0 4px var(--fd-accent-hover, #707CE9);
}

/* -- screen-reader position announcements -------------------------------- */

.fd-live {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* -- narrow screens ------------------------------------------------------ */

@media (max-width: 900px) {
  .fd-stage { padding: 16px 16px 68px; }
  .fd-stage.no-zoom { padding-bottom: 16px; }
  .fd-nav { width: 36px; height: 36px; }
  .fd-nav.prev { left: 6px; }
  .fd-nav.next { right: 6px; }
  .fd-top { padding: 10px 12px; gap: 10px; }
  .fd-btn-text { padding: 0 11px; }
  .fd-strip { padding: 10px 12px; }
}

/* Below this the filename is what matters; the chrome gives up space for it,
   widest-and-least-useful first. */
@media (max-width: 680px) {
  .fd-top { gap: 8px; }

  /* Download collapses to its icon. The label stays in the accessible name
     via aria-label, so this is visual only. */
  .fd-btn-text {
    width: 34px;
    padding: 0;
    justify-content: center;
    gap: 0;
  }
  .fd-btn-label { display: none; }

  .fd-file .fic { width: 32px; height: 32px; border-radius: 8px; }
  .fd-file .ft b { font-size: 13.5px; }
  .fd-file .ft span { font-size: 11.5px; }
  .fd-acts { gap: 2px; }
  .fd-btn { width: 32px; height: 32px; }
  .fd-sep { margin: 0 2px; }
}

@media (max-width: 480px) {
  /* The subtitle is the first thing to go — it's metadata, the name is not. */
  .fd-file .ft span { display: none; }
  .fd-count { padding: 5px 8px; font-size: 11.5px; }
}

@media (max-width: 380px) {
  /* The filmstrip already shows position, so the counter is redundant here,
     and the type icon repeats what the extension in the name already says. */
  .fd-count { display: none; }
  .fd-file .fic { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .fd-root { animation: none !important; }
  .fd-canvas { transition: none; }
  .fd-slide.is-settling { transition: none; }
  /* Keep the indicator, drop the rotation. */
  .fd-canvas.is-loading::after { animation: fd-fade 1ms ease 220ms both; }
}