/* OpenList 风格文件预览 */
:root{
  --ol-bg:#f5f6f8;
  --ol-card:#ffffff;
  --ol-text:#1f2937;
  --ol-muted:#6b7280;
  --ol-line:#e5e7eb;
  --ol-accent:#3b82f6;
  --ol-accent-soft:#eff6ff;
  --ol-radius:14px;
  --ol-shadow:0 1px 2px rgba(15,23,42,.04),0 8px 24px rgba(15,23,42,.06);
}
body.ol-preview-page{
  background:var(--ol-bg)!important;
  color:var(--ol-text);
}
body.ol-preview-page .navbar{
  background:#fff!important;
  border:0!important;
  box-shadow:0 1px 0 var(--ol-line);
  margin-bottom:0!important;
}
body.ol-preview-page .footer{
  background:transparent;
  border:0;
  margin-top:32px;
}

.ol-wrap{
  max-width:1120px;
  margin:0 auto;
  padding:20px 16px 40px;
}
.ol-card{
  background:var(--ol-card);
  border:1px solid var(--ol-line);
  border-radius:var(--ol-radius);
  box-shadow:var(--ol-shadow);
  overflow:hidden;
}
.ol-toolbar{
  display:flex;
  align-items:center;
  gap:12px;
  padding:14px 18px;
  border-bottom:1px solid var(--ol-line);
  flex-wrap:wrap;
}
.ol-back{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;
  color:var(--ol-muted);text-decoration:none;
  background:transparent;border:1px solid transparent;
  transition:.15s ease;
}
.ol-back:hover{background:var(--ol-bg);color:var(--ol-text);border-color:var(--ol-line)}
.ol-title-block{flex:1;min-width:160px}
.ol-fname{
  margin:0;font-size:16px;font-weight:600;line-height:1.35;
  word-break:break-all;color:var(--ol-text);
}
.ol-meta{
  margin:4px 0 0;font-size:12px;color:var(--ol-muted);
  display:flex;flex-wrap:wrap;gap:8px 14px;
}
.ol-meta span{display:inline-flex;align-items:center;gap:5px}
.ol-actions{display:flex;flex-wrap:wrap;gap:8px;margin-left:auto}
.ol-action-bar{
  display:none;
  gap:8px;padding:12px;
  border-bottom:1px solid var(--ol-line);
  background:#fff;
  overflow-x:auto;-webkit-overflow-scrolling:touch;
}
.ol-action-bar .ol-btn{
  flex:1 0 auto;justify-content:center;min-width:72px;height:40px;
}
.ol-btn{
  display:inline-flex;align-items:center;gap:6px;
  height:36px;padding:0 14px;border-radius:10px;
  border:1px solid var(--ol-line);background:#fff;
  color:var(--ol-text);font-size:13px;text-decoration:none;
  cursor:pointer;transition:.15s ease;white-space:nowrap;
}
.ol-btn:hover{background:var(--ol-bg);color:var(--ol-text);text-decoration:none}
.ol-btn-primary{
  background:var(--ol-accent);border-color:var(--ol-accent);color:#fff;
}
.ol-btn-primary:hover{background:#2563eb;border-color:#2563eb;color:#fff}
.ol-btn-ghost{background:var(--ol-accent-soft);border-color:transparent;color:#1d4ed8}
.ol-btn-ghost:hover{background:#dbeafe;color:#1e40af}
.ol-file-tags{display:flex;flex-wrap:wrap;gap:6px;min-height:28px;align-items:center}
.ol-utag{
  display:inline-flex;align-items:center;gap:4px;
  height:28px;padding:0 10px;border-radius:999px;
  background:#f8fafc;border:1px solid var(--ol-line);
  color:#334155!important;text-decoration:none!important;font-size:12px;
}
.ol-utag:hover{background:var(--ol-accent-soft);border-color:#bfdbfe;color:var(--ol-accent)!important}
.ol-tag-edit .ol-input-row{margin-top:0}

.ol-stage{
  position:relative;
  min-height:320px;
  background:
    linear-gradient(180deg,#fafbfc 0%,#f3f4f6 100%);
  display:flex;align-items:center;justify-content:center;
}
.ol-stage.is-media{
  background:#0b0d12;
  min-height:420px;
}
.ol-stage.is-text{
  background:#f8fafc;
  align-items:stretch;justify-content:stretch;
  padding:0;
}
.ol-stage.is-text .preview-loading{
  background:rgba(248,250,252,.85);color:var(--ol-muted);
}

/* loading */
.preview-shell{position:relative;width:100%;min-height:inherit}
.preview-loading{
  position:absolute;inset:0;z-index:3;
  display:flex;align-items:center;justify-content:center;flex-direction:column;
  gap:12px;color:var(--ol-muted);font-size:13px;
  background:rgba(255,255,255,.72);backdrop-filter:blur(4px);
  transition:opacity .3s ease,visibility .3s ease;
}
.ol-stage.is-media .preview-loading{
  background:rgba(11,13,18,.72);color:#9ca3af;
}
.preview-loading.hide{opacity:0;visibility:hidden;pointer-events:none}
.preview-spinner{
  width:34px;height:34px;border-radius:50%;
  border:3px solid rgba(59,130,246,.18);
  border-top-color:var(--ol-accent);
  animation:preview-spin .7s linear infinite;
}
@keyframes preview-spin{to{transform:rotate(360deg)}}
@keyframes preview-fade-up{
  from{opacity:0;transform:translateY(8px) scale(.99)}
  to{opacity:1;transform:none}
}
.preview-fade{animation:preview-fade-up .4s ease both}

/* image */
.preview-image-wrap{
  width:100%;padding:28px 20px;min-height:280px;
  display:flex;align-items:center;justify-content:center;
}
.preview-image-wrap img.preview-image{
  max-width:100%;max-height:min(72vh,680px);
  border-radius:8px;cursor:zoom-in;
  box-shadow:0 12px 40px rgba(15,23,42,.14);
  opacity:0;transition:opacity .35s ease,transform .3s ease;
  transform:scale(.985);
}
.preview-image-wrap img.preview-image.is-ready{opacity:1;transform:none}

/* lightbox */
.preview-lightbox{
  position:fixed;inset:0;z-index:10050;
  display:none;align-items:center;justify-content:center;
  background:rgba(8,10,16,.9);backdrop-filter:blur(8px);
  padding:24px;cursor:zoom-out;
}
.preview-lightbox.show{display:flex;animation:preview-fade-up .22s ease}
.preview-lightbox img{
  max-width:96vw;max-height:92vh;border-radius:6px;
  box-shadow:0 20px 60px rgba(0,0,0,.45);cursor:default;
}
.preview-lightbox .lb-close{
  position:absolute;top:16px;right:20px;
  width:40px;height:40px;border:0;border-radius:50%;
  background:rgba(255,255,255,.12);color:#fff;font-size:22px;line-height:1;
  cursor:pointer;
}

/* audio / video */
.preview-audio{width:100%;max-width:720px;margin:0 auto;padding:36px 20px}
.preview-video{width:100%}
.preview-video .videoplayer{height:min(62vh,560px)!important;margin:0}
.preview-html5-video{
  display:block;width:100%;max-height:min(72vh,680px);
  background:#000;outline:none;
  opacity:0;transition:opacity .3s ease;
}
.preview-html5-video.is-ready{opacity:1}

/* pdf / office */
.preview-frame-wrap{position:relative;width:100%;height:min(78vh,760px);background:#fff}
.preview-frame-wrap iframe{
  width:100%;height:100%;border:0;display:block;
  opacity:0;transition:opacity .35s ease;
}
.preview-frame-wrap iframe.is-ready{opacity:1}

/* text — 浅色 */
.preview-text-wrap{
  width:100%;text-align:left;max-height:min(72vh,720px);overflow:auto;
  background:#ffffff;color:#1f2937;
}
.preview-text-wrap .preview-md{
  padding:22px 24px;line-height:1.75;font-size:15px;color:#1f2937;
}
.preview-text-wrap .preview-md h1,
.preview-text-wrap .preview-md h2,
.preview-text-wrap .preview-md h3{color:#111827;margin-top:1.2em}
.preview-text-wrap .preview-md a{color:#2563eb}
.preview-text-wrap .preview-md code{
  background:#f1f5f9;padding:1px 6px;border-radius:4px;font-size:.92em;color:#0f172a
}
.preview-text-wrap .preview-md pre{
  background:#f8fafc;border:1px solid var(--ol-line);padding:12px 14px;border-radius:8px;overflow:auto
}
.preview-text-wrap pre.preview-code{
  margin:0;padding:18px 20px;font-size:13px;line-height:1.55;
  white-space:pre-wrap;word-break:break-word;color:#1f2937;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
.preview-text-meta{
  display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap;
  padding:10px 16px;font-size:12px;color:var(--ol-muted);
  background:#f8fafc;border-bottom:1px solid var(--ol-line)
}

.preview-fallback{
  padding:56px 24px;color:var(--ol-muted);font-size:15px;text-align:center
}
.preview-fallback .tubiao{
  margin:0 auto 14px;font-size:72px;line-height:1;color:#cbd5e1;
  width:auto;height:auto;background:transparent
}
.preview-fallback p{margin:8px 0}
.preview-fallback .ol-actions{justify-content:center;margin:18px 0 0}

/* details panel under preview — OpenList style */
.ol-details{
  border-top:1px solid var(--ol-line);
  background:#fff;
}
.ol-tabs{
  display:flex;gap:4px;padding:10px 14px 0;
  border-bottom:1px solid var(--ol-line);
  overflow-x:auto;
}
.ol-tab{
  border:0;background:transparent;color:var(--ol-muted);
  padding:10px 14px;font-size:13px;border-radius:10px 10px 0 0;
  cursor:pointer;white-space:nowrap;
}
.ol-tab.active{
  color:var(--ol-accent);font-weight:600;
  box-shadow:inset 0 -2px 0 var(--ol-accent);
}
.ol-pane{display:none;padding:18px}
.ol-pane.active{display:block}
.ol-field{margin:0 0 14px}
.ol-field label{
  display:block;font-size:12px;color:var(--ol-muted);margin-bottom:6px
}
.ol-input-row{display:flex;gap:8px}
.ol-input-row input{
  flex:1;height:38px;border:1px solid var(--ol-line);border-radius:10px;
  padding:0 12px;background:#f9fafb;color:var(--ol-text);font-size:13px;
}
.ol-info-grid{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;
}
.ol-info-item{
  background:var(--ol-bg);border-radius:12px;padding:14px 16px;
}
.ol-info-item .k{font-size:12px;color:var(--ol-muted);margin-bottom:4px}
.ol-info-item .v{font-size:14px;color:var(--ol-text);word-break:break-all}

.ol-side{
  margin-top:16px;
  display:grid;grid-template-columns:1.4fr .8fr;gap:16px;
}
.ol-side .ol-card{padding:16px 18px}
.ol-side h4{
  margin:0 0 10px;font-size:14px;font-weight:600;color:var(--ol-text)
}
.ol-side .tip-body{font-size:13px;color:var(--ol-muted);line-height:1.65}
.ol-qr{text-align:center}
.ol-qr img{border-radius:12px;background:#fff;padding:8px;border:1px solid var(--ol-line)}

@media (max-width:900px){
  .ol-wrap{padding:10px 10px 28px}
  .ol-toolbar{
    padding:12px;
    flex-wrap:nowrap;align-items:flex-start;
  }
  .ol-title-block{min-width:0;flex:1}
  .ol-fname{font-size:15px}
  .ol-meta{gap:4px 10px;font-size:11px}
  .ol-actions-desk{display:none!important}
  .ol-action-bar{display:flex}
  .ol-side{grid-template-columns:1fr;margin-top:12px;gap:12px}
  .ol-info-grid{grid-template-columns:1fr}
  .ol-stage{min-height:200px}
  .ol-stage.is-media{min-height:200px}
  .preview-html5-video{max-height:46vh}
  .preview-frame-wrap{height:56vh}
  .preview-image-wrap{padding:16px 10px;min-height:180px}
  .preview-image-wrap img.preview-image{max-height:50vh}
  .preview-audio{padding:16px 12px}
  .ol-input-row{flex-direction:column}
  .ol-input-row .ol-btn{width:100%;height:40px}
  .ol-pane{padding:14px 12px}
  .ol-tabs{-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .ol-tabs::-webkit-scrollbar{display:none}
  .preview-fallback{padding:36px 16px;font-size:14px}
  .hidden-xs{display:none!important}
}

@media (max-width:480px){
  .preview-html5-video{max-height:40vh}
  .ol-action-bar{
    gap:8px;padding:10px 10px calc(10px + env(safe-area-inset-bottom,0px));
    overflow-x:auto;-webkit-overflow-scrolling:touch;
  }
  .ol-action-bar .ol-btn{
    min-width:72px;height:40px;padding:0 14px;font-size:13px;border-radius:10px;flex-shrink:0;
  }
}