/* the picture of a file's first page shown beside a download button */
.file-preview{position:fixed;z-index:9300;max-width:min(560px,calc(100vw - 16px));padding:10px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--ink);box-shadow:0 18px 44px rgba(15,23,42,.28);pointer-events:none;}
.file-preview.hidden{display:none;}
.file-preview img{display:block;max-width:100%;max-height:min(68vh,740px);width:auto;height:auto;border:1px solid var(--line);border-radius:8px;background:#fff;}
.file-preview p{margin:8px 2px 0;font:500 12.5px/1.4 'Prompt','Sarabun',sans-serif;color:var(--sub);}