:root{--bg: #0f1115;--bg-panel: #171a21;--bg-elev: #1e222b;--bg-hover: #262b36;--border: #2b303b;--text: #e6e8ee;--text-muted: #9aa2b1;--accent: #5b8cff;--accent-strong: #3f6fe0;--success: #35c07f;--error: #ff6b6b;--chip: #2a2f3a;--radius: 10px;--shadow: 0 6px 24px rgba(0, 0, 0, .35);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body,#app{height:100%;margin:0}body{background:var(--bg);color:var(--text);font-size:14px}.app{display:flex;flex-direction:column;height:100vh}.app-header{background:var(--bg-panel);border-bottom:1px solid var(--border);padding:14px 20px;display:flex;flex-direction:column;gap:12px}.brand{display:flex;align-items:center;gap:14px}.brand .logo{font-size:26px;background:var(--accent);color:#fff;width:42px;height:42px;border-radius:var(--radius);display:grid;place-items:center}.brand h1{font-size:18px;margin:0}.subtitle{margin:2px 0 0;color:var(--text-muted);font-size:12.5px}.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.options{display:flex;align-items:center;gap:14px;padding:0 6px;margin-left:auto}.opt{display:flex;align-items:center;gap:6px;color:var(--text-muted);font-size:12.5px;white-space:nowrap}.opt input[type=number]{width:64px;background:var(--bg-elev);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:4px 6px}.opt.checkbox{cursor:pointer}.btn{background:var(--bg-elev);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:8px 14px;font-size:13px;cursor:pointer;transition:background .15s,border-color .15s,opacity .15s}.btn:hover:not(:disabled){background:var(--bg-hover)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-primary:hover:not(:disabled){background:var(--accent-strong)}.file-btn{display:inline-flex;align-items:center}.progress{display:flex;align-items:center;gap:12px}.progress-track{flex:1;height:8px;background:var(--bg-elev);border-radius:999px;overflow:hidden}.progress-bar{height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--success));transition:width .15s ease}.progress-text{color:var(--text-muted);font-size:12px;min-width:160px;text-align:right}.app-main{flex:1;display:grid;grid-template-columns:300px 1fr 320px;gap:1px;background:var(--border);min-height:0}.panel{background:var(--bg);display:flex;flex-direction:column;min-height:0;overflow:hidden}.panel-head{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border)}.panel-head h2{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin:0}.badge{background:var(--chip);color:var(--text);border-radius:999px;padding:2px 10px;font-size:12px}.empty-hint{color:var(--text-muted);font-size:13px;padding:16px;line-height:1.5}.doc-list-body{overflow-y:auto;padding:10px;display:flex;flex-direction:column;gap:8px}.doc-card{position:relative;text-align:left;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius);padding:12px 12px 10px;cursor:pointer;color:var(--text);transition:border-color .15s,background .15s;width:100%;font:inherit}.doc-card:hover{background:var(--bg-elev)}.doc-card.selected{border-color:var(--accent);background:var(--bg-elev)}.doc-card-title{font-weight:600;font-size:13.5px;margin-bottom:8px;padding-right:60px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.doc-card-meta{display:flex;flex-wrap:wrap;gap:6px}.chip{background:var(--chip);color:var(--text);border-radius:6px;padding:2px 8px;font-size:11.5px}.chip-sep{background:#5b8cff2e;color:#a9c1ff}.chip-muted{background:transparent;border:1px solid var(--border);color:var(--text-muted)}.doc-card-export{position:absolute;top:10px;right:10px;font-size:11.5px;color:var(--accent);border:1px solid var(--border);border-radius:6px;padding:2px 8px;background:var(--bg);cursor:pointer}.doc-card-export:hover{background:var(--accent);color:#fff;border-color:var(--accent)}.viewer{background:#0b0d11}.viewer-head{display:flex;align-items:baseline;gap:12px;padding:10px 16px;border-bottom:1px solid var(--border);background:var(--bg-panel)}.viewer-title{font-weight:600;font-size:13.5px}.viewer-sub{color:var(--text-muted);font-size:12px}.pages-scroll{flex:1;overflow-y:auto;padding:20px 16px 40px;display:flex;flex-direction:column;align-items:center;gap:22px}.viewer-placeholder{margin-top:20vh;color:var(--text-muted)}.page-wrap{width:min(100%,900px)}.page-label-row{display:flex;align-items:center;gap:8px;margin-bottom:6px;color:var(--text-muted);font-size:12px}.page-num{font-variant-numeric:tabular-nums}.page-frame{width:100%;background:#fff;border-radius:4px;box-shadow:var(--shadow);overflow:hidden}.page-frame canvas{display:block;width:100%;height:auto}.meta-body{overflow-y:auto;padding:16px}.meta-title{font-size:15px;margin:0 0 12px;word-break:break-word}.meta-subhead{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin:18px 0 8px;display:flex;align-items:center;gap:8px}.meta-grid{display:grid;grid-template-columns:minmax(90px,auto) 1fr;gap:6px 12px;margin:0}.meta-grid dt{color:var(--text-muted);font-size:12.5px;word-break:break-word}.meta-grid dd{margin:0;font-size:12.5px;word-break:break-word}.meta-raw{background:var(--bg-elev);border:1px solid var(--border);border-radius:8px;padding:10px;font-size:12px;white-space:pre-wrap;word-break:break-word;max-height:240px;overflow:auto}.status-bar{border-top:1px solid var(--border);background:var(--bg-panel);color:var(--text-muted);font-size:12.5px;padding:8px 20px;min-height:34px}.status-bar[data-kind=success]{color:var(--success)}.status-bar[data-kind=error]{color:var(--error)}@media(max-width:1000px){.app-main{grid-template-columns:240px 1fr}.meta-panel{display:none}}.dialog-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000a6;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:grid;place-items:center;z-index:100;padding:24px}.dialog{background:var(--bg-panel);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);width:min(760px,100%);display:flex;flex-direction:column;gap:20px;padding:28px;animation:dialog-in .18s ease}@keyframes dialog-in{0%{opacity:0;transform:translateY(-12px) scale(.97)}to{opacity:1;transform:none}}.dialog-header{display:flex;align-items:center;gap:14px}.dialog-logo{font-size:22px;background:var(--accent);color:#fff;width:40px;height:40px;border-radius:10px;display:grid;place-items:center;flex-shrink:0}.dialog-header h2{font-size:17px;margin:0}.dialog-sub{margin:3px 0 0;font-size:12.5px;color:var(--text-muted)}.dialog-close{margin-left:auto;background:none;border:none;color:var(--text-muted);font-size:16px;cursor:pointer;padding:4px 8px;border-radius:6px;line-height:1;transition:background .15s,color .15s}.dialog-close:hover{background:var(--bg-hover);color:var(--text)}.drop-zone{border:2px dashed var(--border);border-radius:12px;background:var(--bg-elev);padding:36px 20px;display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer;transition:border-color .15s,background .15s;outline:none;-webkit-user-select:none;user-select:none}.drop-zone:hover,.drop-zone:focus-visible{border-color:var(--accent);background:var(--bg-hover)}.drop-zone.drag-active{border-color:var(--accent);background:#5b8cff14}.drop-zone.has-file{border-style:solid;border-color:var(--success);padding:20px}.drop-icon-idle{font-size:32px;color:var(--text-muted);line-height:1}.drop-primary{font-size:14.5px;font-weight:600;color:var(--text)}.drop-or{font-size:12.5px;color:var(--text-muted)}.drop-link{color:var(--accent);text-decoration:underline;text-underline-offset:2px}.drop-file-info{display:flex;align-items:center;gap:10px}.drop-icon{font-size:28px;line-height:1}.drop-filename{font-size:14px;font-weight:600;word-break:break-all}.drop-filesize{font-size:12px;color:var(--text-muted);white-space:nowrap}.drop-hint-small{font-size:11.5px;color:var(--text-muted)}.field-error{margin:-8px 0 0;font-size:12.5px;color:var(--error)}.options-group{border:1px solid var(--border);border-radius:10px;padding:14px 16px 16px;margin:0;display:flex;flex-direction:column;gap:14px}.options-group legend{font-size:11.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);padding:0 6px}.opt-row{display:grid;grid-template-columns:100px 1fr;grid-template-rows:auto auto;column-gap:12px;row-gap:4px;align-items:center;cursor:pointer}.opt-label{font-size:13px;font-weight:500}.opt-control{display:flex;align-items:center;gap:10px}.opt-control input[type=range]{flex:1;accent-color:var(--accent);cursor:pointer}.dpi-num{width:64px;background:var(--bg-elev);border:1px solid var(--border);color:var(--text);border-radius:6px;padding:4px 6px;font-size:13px;text-align:right}.dpi-num:focus{outline:none;border-color:var(--accent)}.checkbox-row .opt-control{gap:8px}.checkbox-row input[type=checkbox]{width:16px;height:16px;accent-color:var(--accent);cursor:pointer}.toggle-label{font-size:13px;color:var(--text-muted)}.opt-hint{grid-column:2;font-size:11.5px;color:var(--text-muted);line-height:1.4}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:4px}.file-input-row{display:grid;grid-template-columns:1fr 200px;gap:14px;align-items:stretch}.sample-panel{background:var(--bg-elev);border:1px solid var(--border);border-radius:12px;padding:14px 14px 10px;display:flex;flex-direction:column;gap:8px}.sample-heading{margin:0;font-size:11.5px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);display:flex;align-items:center;gap:6px}.sample-heading-icon{font-size:13px;line-height:1}.sample-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:5px;flex:1}.sample-item{display:flex;align-items:center;gap:6px}.sample-load-btn{flex:1;display:flex;align-items:center;gap:7px;background:var(--bg-panel);border:1px solid var(--border);border-radius:7px;padding:5px 8px;cursor:pointer;font:inherit;color:var(--text);font-size:12.5px;transition:background .15s,border-color .15s;text-align:left;min-width:0}.sample-load-btn:hover:not(:disabled){background:var(--bg-hover);border-color:var(--accent)}.sample-load-btn:disabled{opacity:.5;cursor:not-allowed}.sample-size-badge{background:#5b8cff26;color:var(--accent);border-radius:4px;padding:1px 5px;font-size:10.5px;font-weight:700;letter-spacing:.04em;flex-shrink:0}.sample-spinner{font-size:12px;line-height:1;flex-shrink:0}.sample-label{font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sample-dl-link{flex-shrink:0;width:26px;height:26px;display:grid;place-items:center;background:var(--bg-panel);border:1px solid var(--border);border-radius:6px;color:var(--text-muted);font-size:13px;text-decoration:none;transition:background .15s,color .15s,border-color .15s}.sample-dl-link:hover{background:var(--accent);border-color:var(--accent);color:#fff}.sample-note{margin:4px 0 0;font-size:10.5px;color:var(--text-muted);line-height:1.4}.sample-note code{font-family:SF Mono,Fira Code,Consolas,monospace;background:var(--bg-hover);border-radius:3px;padding:1px 4px;font-size:10px}@media(max-width:600px){.file-input-row{grid-template-columns:1fr}}.about-section{border:1px solid var(--border);border-radius:10px;overflow:hidden}.about-summary{display:flex;align-items:center;gap:8px;padding:11px 16px;font-size:12.5px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);cursor:pointer;list-style:none;-webkit-user-select:none;user-select:none;background:var(--bg-elev);transition:background .15s,color .15s}.about-summary::-webkit-details-marker{display:none}.about-summary:after{content:"›";margin-left:auto;font-size:16px;transition:transform .2s;display:inline-block}details[open] .about-summary:after{transform:rotate(90deg)}.about-summary:hover{background:var(--bg-hover);color:var(--text)}.about-summary-icon{font-size:14px;line-height:1;color:var(--accent)}.about-body{display:grid;grid-template-columns:1fr 1fr;gap:0;background:var(--bg-panel);border-top:1px solid var(--border)}.about-col{padding:18px 20px;border-right:1px solid var(--border);font-size:12.5px;line-height:1.6;color:var(--text-muted)}.about-col:last-child,.about-col-full{border-right:none}.about-col-full{grid-column:1 / -1;border-top:1px solid var(--border)}.about-head{font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--text);margin:0 0 10px}.about-col p{margin:0 0 8px}.about-col p:last-child{margin-bottom:0}.about-tech-list{list-style:none;margin:0 0 10px;padding:0;display:flex;flex-direction:column;gap:8px}.about-tech-list li{display:flex;align-items:flex-start;gap:8px;line-height:1.5;word-break:break-word;overflow-wrap:break-word}.about-tech-list li span+*{min-width:0;flex:1}.tech-badge{flex-shrink:0;font-size:10.5px;font-weight:700;border-radius:4px;padding:2px 6px;letter-spacing:.04em}.tech-badge.rust{background:#de6e3233;color:#f4935a}.tech-badge.pdfjs{background:#ff505026;color:#ff8080}.tech-badge.svelte{background:#ff502826;color:#ff9068}.about-privacy{margin-top:10px!important;font-size:11.5px;color:var(--success)}.about-steps{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:6px}.about-steps li{line-height:1.55}.about-steps code,.about-col code{font-family:SF Mono,Fira Code,Consolas,monospace;background:var(--bg-hover);border-radius:3px;padding:1px 5px;font-size:11px;color:var(--text)}@media(max-width:600px){.about-body{grid-template-columns:1fr}.about-col{border-right:none;border-bottom:1px solid var(--border)}.about-col:last-child{border-bottom:none}.about-col-full{grid-column:1}}.pm-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b8;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:grid;place-items:center;z-index:200;padding:24px}.pm-dialog{background:var(--bg-panel);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);width:min(720px,100%);display:flex;flex-direction:column;gap:0;overflow:hidden;animation:dialog-in .18s ease}.pm-header{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:20px 24px 18px;border-bottom:1px solid var(--border)}.pm-header-left{display:flex;align-items:center;gap:14px}.pm-status-icon{font-size:22px;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;flex-shrink:0;font-style:normal}.pm-status-icon.pm-spin{background:#5b8cff26;color:var(--accent);animation:pm-rotate 1.2s linear infinite}.pm-status-icon.pm-done{background:#35c07f26;color:var(--success)}@keyframes pm-rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.pm-title{font-size:15px;font-weight:600;margin:0}.pm-sub{font-size:12px;color:var(--text-muted);margin:3px 0 0;max-width:480px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pm-close{background:none;border:none;color:var(--text-muted);font-size:16px;cursor:pointer;padding:4px 8px;border-radius:6px;line-height:1;transition:background .15s,color .15s}.pm-close:hover{background:var(--bg-hover);color:var(--text)}.pm-progress-wrap{padding:16px 24px 14px;border-bottom:1px solid var(--border);background:var(--bg-elev);display:flex;flex-direction:column;gap:8px}.pm-progress-track{height:8px;background:var(--bg-hover);border-radius:999px;overflow:hidden}.pm-progress-bar{height:100%;background:linear-gradient(90deg,var(--accent),#7bb8ff);border-radius:999px;transition:width .15s ease}.pm-progress-bar.pm-progress-done{background:linear-gradient(90deg,var(--success),#7be8b8)}.pm-progress-label{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-muted)}.pm-pct{font-weight:700;color:var(--text);font-variant-numeric:tabular-nums;min-width:36px}.pm-page-count{font-variant-numeric:tabular-nums}.pm-label-text{margin-left:auto;color:var(--accent)}.pm-log-pane{max-height:320px;overflow-y:auto;background:#0a0c10;padding:14px 18px;font-family:SF Mono,Fira Code,Consolas,monospace;font-size:12px;line-height:1.55;display:flex;flex-direction:column;gap:1px;scroll-behavior:smooth}.pm-log-line{display:flex;gap:12px;color:#8a9ab5}.pm-log-num{color:#3d4860;flex-shrink:0;-webkit-user-select:none;user-select:none;font-variant-numeric:tabular-nums}.pm-log-text{word-break:break-all}.pm-log-line.pm-log-qr .pm-log-text{color:#a9c1ff}.pm-log-line.pm-log-qr .pm-log-num{color:#5b8cff80}.pm-log-line.pm-log-err .pm-log-text{color:var(--error)}.pm-log-line.pm-log-done .pm-log-text{color:var(--success);font-weight:600}.pm-log-idle{color:#3d4860;font-style:italic}.pm-footer{padding:14px 24px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:flex-end;background:var(--bg-panel)}.pm-footer-hint{font-size:12px;color:var(--text-muted)}