:root{--bg:#f6f6f4;--fg:#1c1c1c;--mut:#666;--card:#fff;--line:#d6d6d0;--acc:#7a0000;--accbg:#7a0000;--blue:#1f4fbf;--pin:#d97706;--warn:#fff4d6}
@media (prefers-color-scheme:dark){:root{--bg:#161616;--fg:#e8e8e8;--mut:#9a9a9a;--card:#222;--line:#3a3a3a;--acc:#e06060;--accbg:#a82a2a;--blue:#7ea6ff;--pin:#f0a030;--warn:#3a3016}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.4 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
header,main,footer{max-width:1500px;margin:0 auto;padding:0 16px}
h1{margin:18px 0 2px;font-size:22px;color:var(--acc)}
.sub,.hint{color:var(--mut);margin:4px 0;font-size:13px}
footer{color:var(--mut);font-size:12px;padding:20px 16px}
#drop{display:flex;flex-direction:column;gap:4px;align-items:center;justify-content:center;border:2px dashed var(--line);border-radius:12px;padding:44px 16px;background:var(--card);cursor:pointer;text-align:center}
#drop.over,#drop:focus-within{border-color:var(--acc)}
#drop span{color:var(--mut)} #file{position:absolute;opacity:0;width:1px;height:1px}
#err{color:#b00020;background:#fdecea;padding:8px 12px;border-radius:8px}
button{font:inherit;cursor:pointer}
button.link{background:none;border:0;color:var(--blue);text-decoration:underline;padding:0}
button.primary{background:var(--accbg);color:#fff;border:0;border-radius:8px;padding:10px 18px;font-weight:600}
.cols{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:16px;align-items:start}
@media (max-width:1000px){.cols{grid-template-columns:minmax(0,1fr)}}
fieldset{min-width:0}
.preview{position:sticky;top:8px}
@media (max-width:1000px){.preview{position:static}}
.bar{display:flex;gap:12px;align-items:center;margin:8px 0}
#pages{overflow:auto;max-height:calc(100vh - 64px)}
@media (max-width:1000px){#pages{max-height:none}}
.zoom{display:inline-flex;gap:4px;align-items:center}.zoom button{border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:6px;min-width:34px;height:34px}.zoom output{min-width:44px;text-align:center;font-size:13px}
.wrow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr)) 28px;gap:4px;margin:3px 0}.wrow input{padding:4px 6px}
.rwy{display:grid;grid-template-columns:repeat(4,minmax(0,1fr)) 28px;gap:4px;margin:2px 0}.rwy input{padding:3px 5px}
#pages canvas{display:block;width:100%;border:1px solid var(--line);margin-bottom:8px;background:#fff}
fieldset,details{background:var(--card);border:1px solid var(--line);border-radius:10px;margin:12px 0;padding:10px 12px}
legend{font-weight:600;padding:0 6px} summary{font-weight:600;cursor:pointer}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px 12px;margin-top:8px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:8px}
.grid2 fieldset{margin:6px 0} .grid2 label{display:flex;justify-content:space-between;gap:8px;align-items:center;margin:3px 0}
label{display:flex;flex-direction:column;gap:2px;font-size:13px;color:var(--mut)}
label.wide{margin-top:8px}
input,select,textarea{font:inherit;color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:6px 8px;min-width:0;width:100%}
input:focus,select:focus,textarea:focus{outline:2px solid var(--acc);outline-offset:0}
.u{font-weight:400}
.seg{display:flex;gap:0}.seg label{flex:1;flex-direction:row}
.seg input{position:absolute;opacity:0;width:1px;height:1px}
.seg span{flex:1;text-align:center;border:1px solid var(--line);padding:8px;cursor:pointer;color:var(--fg);background:var(--bg)}
.seg label:first-child span{border-radius:8px 0 0 8px}.seg label:last-child span{border-radius:0 8px 8px 0}
.seg input:checked+span{background:var(--accbg);border-color:var(--accbg);color:#fff;font-weight:600}
.seg input:focus-visible+span{outline:2px solid var(--blue);outline-offset:2px}
.warn{list-style:none;margin:8px 0;padding:0}.warn li{background:var(--warn);border-radius:8px;padding:6px 10px;margin:4px 0;font-size:13px}.warn li.info{background:var(--card);border:1px solid var(--line)}
.scroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;min-width:760px}
th{font-size:11px;text-align:left;color:var(--mut);padding:2px 3px;white-space:nowrap}
td{padding:1px 2px}
td input{padding:4px 5px;min-width:44px}
td.d input{border-color:var(--blue)} td.d input.pin{border-color:var(--pin);background:color-mix(in srgb,var(--pin) 14%,var(--bg))}
tr.off input{opacity:.45}
td.act{white-space:nowrap}.x{border:1px solid var(--line);background:var(--bg);color:var(--fg);border-radius:6px;width:26px;height:26px;padding:0}
.x:disabled{opacity:.3;cursor:default}
body[data-rules="IFR"] .vfr{display:none}
#addRow{margin-top:8px}