:root{
  --bg:#0f1822; --panel:#16222e; --panel-2:#1d2c3a; --line:#27384a;
  --ink:#e7eef5; --muted:#8aa0b4; --accent:#3aa0ff; --accent-2:#7ad0ff;
  --rule:#5bd6a8; --car:#f2b35c; --aic:#c08bff; --circ:#5aa9ff;
  --manual:#ff8fa3; --notice:#ffd166; --ext:#9aa7b3; --other:#9aa7b3;
  --header-bg:rgba(15,24,34,.92); --topic:#cfe3f5;
}
html[data-theme="light"]{
  --bg:#f4f7fa; --panel:#ffffff; --panel-2:#eef3f8; --line:#d4dee8;
  --ink:#1a2730; --muted:#5d7186; --accent:#1f6fd6; --accent-2:#0a6aa8;
  --rule:#138a5e; --car:#a96e16; --aic:#7437c4; --circ:#1f6fd6;
  --manual:#c2415a; --notice:#9a7400; --ext:#5d7186; --other:#5d7186;
  --header-bg:rgba(255,255,255,.92); --topic:#16384f;
}
html[data-theme="light"] mark{background:#ffe9a8;color:#1a2730}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
/* sticky footer: body fills the viewport, footer is pushed to the bottom */
body{margin:0;font:15px/1.5 "Segoe UI",system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--ink);min-height:100vh;display:flex;flex-direction:column}
body > .site-footer{margin-top:auto}
header{position:sticky;top:0;z-index:20;background:var(--header-bg);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.wrap{width:100%;max-width:1100px;margin:0 auto;padding:0 20px}
.brand{display:flex;align-items:baseline;gap:12px;padding:16px 0 10px}
.brand h1{font-size:20px;margin:0;letter-spacing:.3px}
.brand .plane{color:var(--accent-2);font-size:22px}
.brand small{color:var(--muted)}
/* ---- shared site header (rendered by nav.js into #site-nav) ---- */
.nav-wrap{display:flex;align-items:center;gap:22px;padding:12px 0;position:relative}
.brand-link{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ink)}
.brand-link .plane{color:var(--accent-2);font-size:20px}
.brand-link h1{font-size:18px;margin:0;letter-spacing:.3px;white-space:nowrap}
.nav{display:flex;gap:18px;align-items:center;font-size:13px}
.nav a{color:var(--muted);text-decoration:none;white-space:nowrap}
.nav a:hover{color:var(--ink)}
.nav a.active{color:var(--accent-2);font-weight:600}
/* hamburger: hidden on desktop, shown on narrow screens via the media query */
.navtoggle{display:none;background:transparent;border:1px solid var(--line);color:var(--ink);
  width:34px;height:34px;border-radius:8px;cursor:pointer;font-size:17px;line-height:1}
.navtoggle:hover{border-color:var(--accent)}
.usermenu{margin-left:auto;position:relative;display:flex;align-items:center;gap:10px}
.themetoggle{background:transparent;border:1px solid var(--line);color:var(--muted);
  width:32px;height:32px;border-radius:8px;cursor:pointer;font-size:15px;line-height:1}
.themetoggle:hover{color:var(--ink);border-color:var(--accent)}
.signin{color:var(--accent);text-decoration:none;font-size:13px;font-weight:600}
.userbtn{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);
  color:var(--ink);border-radius:999px;padding:5px 12px 5px 5px;cursor:pointer;font-size:13px}
.userbtn:hover{border-color:var(--accent)}
.userbtn .avatar{width:24px;height:24px;border-radius:50%;background:var(--accent);color:#04121f;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px}
.userbtn .uname{max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.userbtn .caret{color:var(--muted)}
.dropdown{position:absolute;top:42px;right:0;min-width:190px;background:var(--panel);
  border:1px solid var(--line);border-radius:10px;padding:6px;display:none;z-index:50;
  box-shadow:0 10px 30px rgba(0,0,0,.35)}
.dropdown.open{display:block}
.dropdown a{display:block;padding:8px 10px;border-radius:7px;color:var(--ink);text-decoration:none;font-size:13px}
.dropdown a:hover{background:var(--panel-2)}
.dd-head{padding:6px 10px 8px;color:var(--muted);font-size:12px;border-bottom:1px solid var(--line);
  margin-bottom:4px;display:flex;justify-content:space-between;gap:8px;align-items:center}
.dd-head .role{background:var(--panel-2);color:var(--accent-2);padding:1px 7px;border-radius:999px;
  font-size:10px;text-transform:uppercase;font-weight:700}
.dd-sep{height:1px;background:var(--line);margin:4px 0}
/* ---- modal (change password) ---- */
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.55);display:none;
  align-items:flex-start;justify-content:center;z-index:100}
.modal-backdrop.show{display:flex}
.modal{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px;
  margin-top:12vh;width:340px;max-width:92vw}
.modal h3{margin:0 0 14px;font-size:16px}
.modal label{display:block;font-size:12px;color:var(--muted);margin:10px 0 4px}
.modal input{width:100%;background:var(--panel-2);border:1px solid var(--line);color:var(--ink);
  border-radius:8px;padding:9px 11px;font-size:14px}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:16px}
.modal button{background:var(--accent);color:#04121f;border:0;border-radius:8px;padding:9px 16px;font-weight:600;cursor:pointer}
.modal button.ghost{background:var(--panel-2);color:var(--ink);border:1px solid var(--line)}
.pw-msg{font-size:13px;margin-top:12px;min-height:16px}
/* section tables */
.tbl{width:100%;border-collapse:collapse;font-size:13.5px;margin-top:8px}
.tbl th,.tbl td{text-align:left;padding:9px 11px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{color:var(--muted);font-size:11px;text-transform:uppercase;letter-spacing:.5px;
  font-weight:700;position:sticky;top:74px;background:var(--bg)}
.tbl tr:hover td{background:var(--panel)}
.pill{display:inline-block;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;
  border:1px solid var(--line);background:var(--panel-2);color:var(--accent-2)}
.fatal{color:#ff8fa3;font-weight:600}
.cards{display:flex;gap:12px;flex-wrap:wrap;margin:10px 0 18px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:12px 16px;min-width:120px}
.stat .v{font-size:22px;font-weight:700;color:var(--accent-2)}
.stat .k{font-size:12px;color:var(--muted)}
.doccard{display:block;background:var(--panel);border:1px solid var(--line);border-radius:10px;
  padding:16px 18px;margin:12px 0;text-decoration:none;color:var(--ink)}
.doccard:hover{border-color:var(--accent)}
.doccard .code{color:var(--accent-2);font-weight:600;font-size:13px}
.doccard .t{font-size:16px;margin:3px 0}
.doccard .m{color:var(--muted);font-size:12px}
/* ---- comparison tables (uploaded + auto-generated diffs) ---- */
table.cmp{width:100%;border-collapse:collapse;font-size:13.5px;table-layout:fixed;line-height:1.5}
table.cmp th,table.cmp td{border:1px solid var(--line);padding:8px 11px;vertical-align:top;text-align:left}
table.cmp th{position:sticky;top:0;background:var(--panel-2);color:var(--accent-2);font-size:12px;
  text-transform:uppercase;letter-spacing:.5px;z-index:1}
table.cmp th:first-child,table.cmp td.n{width:44px;text-align:center;color:var(--muted)}
table.cmp tr:nth-child(even) td{background:rgba(127,127,127,.06)}
table.cmp tr.chg td:first-child{border-left:3px solid var(--accent)}
.hl-y,.hl-b,.hl-r,.hl-g{padding:0 2px;border-radius:2px}
.hl-y{background:#f2e23a;color:#10202e}
.hl-b{background:#67dcef;color:#10202e}
.hl-r{background:#ff7a85;color:#1a0608}
.hl-g{background:#73d99b;color:#10202e}
.cmp-legend{display:flex;gap:8px;flex-wrap:wrap;margin:4px 0 12px;font-size:12px}
.cmp-legend span{padding:2px 9px;border-radius:4px;font-weight:600}
/* ---- landing / home ---- */
.hero{text-align:center;padding:54px 10px 30px;max-width:720px;margin:0 auto}
.hero h1{font-size:34px;line-height:1.2;margin:0 0 12px}
.hero p{color:var(--muted);font-size:16px;margin:0 0 26px}
.hero-search{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);
  border-radius:12px;padding:6px 6px 6px 40px;position:relative;box-shadow:0 6px 24px rgba(0,0,0,.18)}
.hero-search:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(58,160,255,.18)}
.hero-search .ico{position:absolute;left:14px;color:var(--muted)}
.hero-search input{flex:1;background:transparent;border:0;outline:none;color:var(--ink);font-size:16px;padding:10px 4px}
.hero-search button{background:var(--accent);color:#04121f;border:0;border-radius:9px;padding:11px 20px;font-weight:600;cursor:pointer}
.homecards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px;margin:18px 0 60px}
.homecard{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:20px;
  text-decoration:none;color:var(--ink);transition:border-color .12s}
.homecard:hover{border-color:var(--accent)}
.homecard .hc-k{color:var(--accent-2);font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.homecard .hc-v{font-size:30px;font-weight:700;margin:6px 0 2px}
.homecard .hc-d{color:var(--muted);font-size:13px}
.controls{padding-top:14px}
.searchbar{position:relative;padding-bottom:12px}
#q{width:100%;padding:13px 44px 13px 42px;font-size:16px;color:var(--ink);
  background:var(--panel);border:1px solid var(--line);border-radius:10px;outline:none}
#q:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(58,160,255,.18)}
.searchbar .ico{position:absolute;left:14px;top:12px;color:var(--muted)}
#clear{position:absolute;right:10px;top:9px;border:0;background:transparent;
  color:var(--muted);font-size:18px;cursor:pointer;display:none;padding:4px}
.filters{display:flex;flex-wrap:wrap;gap:7px;padding-bottom:12px}
.chip{border:1px solid var(--line);background:var(--panel);color:var(--muted);
  padding:5px 11px;border-radius:999px;font-size:13px;cursor:pointer;user-select:none}
.chip:hover{color:var(--ink)}
.chip.on{background:var(--accent);border-color:var(--accent);color:#04121f;font-weight:600}
.chip .n{opacity:.7;font-size:11px;margin-left:4px}
.meta{color:var(--muted);font-size:13px;padding:6px 0 14px}
.azbar{display:flex;flex-wrap:wrap;gap:3px;padding:0 0 16px}
.azbar a{color:var(--muted);text-decoration:none;font-size:12px;font-weight:600;
  padding:3px 7px;border-radius:6px;border:1px solid transparent}
.azbar a:hover{background:var(--panel-2);color:var(--ink)}
.azbar a.dead{opacity:.28;pointer-events:none}
main{padding:6px 0 80px}
.group{margin:0 0 6px}
.ghead{position:sticky;top:0;font-size:12px;font-weight:700;letter-spacing:1px;
  color:var(--accent-2);text-transform:uppercase;padding:18px 0 6px;
  border-bottom:1px solid var(--line);margin-bottom:4px}
.topic{margin:14px 0 2px;font-size:15px;font-weight:600;color:var(--topic)}
.row{display:flex;gap:12px;align-items:flex-start;padding:8px 10px;
  border-radius:8px;border:1px solid transparent}
.row:hover{background:var(--panel);border-color:var(--line)}
.row .desc{flex:1;min-width:0}
.badge{flex:0 0 auto;font-size:12px;font-weight:600;padding:3px 9px;border-radius:6px;
  white-space:nowrap;border:1px solid var(--line);background:var(--panel-2)}
.badge .cat{font-size:10px;text-transform:uppercase;letter-spacing:.5px;
  display:block;opacity:.7;font-weight:700}
a.badge{text-decoration:none;color:var(--ink);cursor:pointer}
a.badge.linked{border-color:var(--accent)}
a.badge.linked:hover{background:var(--panel-2);box-shadow:0 0 0 2px rgba(58,160,255,.25)}
.cat-Rule{color:var(--rule)} .cat-CAR{color:var(--car)} .cat-AIC{color:var(--aic)}
.cat-Circular{color:var(--circ)} .cat-Manual{color:var(--manual)}
.cat-Notice{color:var(--notice)} .cat-External{color:var(--ext)}
.cat-AIP,.cat-ICAO,.cat-Other{color:var(--other)}
mark{background:rgba(122,208,255,.28);color:#fff;border-radius:3px;padding:0 1px}
.empty{text-align:center;color:var(--muted);padding:60px 20px}
footer{border-top:1px solid var(--line);color:var(--muted);font-size:12px;
  padding:18px 0 40px;text-align:center}
/* ---- shared site footer (rendered by nav.js) ---- */
.site-footer{border-top:1px solid var(--line);margin-top:48px;padding:20px 0;
  color:var(--muted);font-size:13px;text-align:left}
.site-footer .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;align-items:center;justify-content:space-between}
.foot-links{display:flex;gap:16px;flex-wrap:wrap}
.foot-links a{color:var(--muted);text-decoration:none}
.foot-links a:hover{color:var(--ink)}
.foot-credit a.varuni{color:var(--accent-2);font-weight:600;text-decoration:none}
.foot-credit a.varuni:hover{text-decoration:underline}
/* ---- legal / content pages ---- */
.legal{max-width:820px;padding-top:24px}
.legal h1{font-size:26px;margin:0 0 4px}
.legal .updated{color:var(--muted);font-size:13px;margin-bottom:22px}
.legal h2{font-size:17px;color:var(--accent-2);margin:24px 0 8px}
.legal p,.legal li{line-height:1.65;margin:0 0 12px}
.legal .note{color:var(--muted);font-size:13px;border-left:3px solid var(--line);padding-left:12px}
/* ---- "In document text" full-text matches (separate search section) ---- */
#docs{padding-top:4px}
#docs:empty{display:none}
.docmatch-head{font-size:13px;font-weight:700;color:var(--muted);text-transform:uppercase;
  letter-spacing:.5px;margin:22px 0 10px;border-top:1px solid var(--line);padding-top:16px}
.docmatch-head .n{display:inline-block;margin-left:6px;background:var(--panel-2);color:var(--accent-2);
  border-radius:999px;padding:1px 8px;font-size:12px}
a.docmatch{display:block;text-decoration:none;color:var(--ink);background:var(--panel);
  border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin:0 0 10px}
a.docmatch:hover{border-color:var(--accent);box-shadow:0 0 0 2px rgba(58,160,255,.18)}
.docmatch .dm-top{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;margin-bottom:6px}
.docmatch .dm-top .cat{color:var(--accent-2);font-weight:600;font-size:13px}
.docmatch .dm-title{font-weight:600}
.docmatch .dm-cat{margin-left:auto;color:var(--muted);font-size:12px}
.docmatch .dm-snip{color:var(--muted);font-size:13px;line-height:1.6}

/* ===== Mobile / responsive (≤760px) ===== */
@media (max-width:760px){
  .wrap{padding:0 14px}
  /* show the hamburger; collapse the links into a dropdown panel */
  .navtoggle{display:inline-flex;align-items:center;justify-content:center}
  .nav{position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;
    gap:0;display:none;background:var(--panel);border:1px solid var(--line);border-top:0;
    border-radius:0 0 12px 12px;padding:6px 14px 12px;font-size:15px;
    box-shadow:0 14px 30px rgba(0,0,0,.30)}
  .nav.open{display:flex}
  .nav a{padding:12px 4px;border-bottom:1px solid var(--line)}
  .nav a:last-child{border-bottom:0}
  .usermenu{gap:8px}
  /* hide the email label to save room; the avatar still identifies the user */
  .userbtn .uname{display:none}
  .userbtn{padding:5px}
  .userbtn .caret{display:none}
  /* roomier dropdown + a little space from the toggle */
  .dropdown{top:46px}
  /* keep wide tables usable: scroll them horizontally inside their container
     instead of forcing the whole page to overflow */
  .card{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .cmp-wrap,.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
  table.cmp{font-size:12.5px}
  .tbl th{top:0}
  .hero{padding:34px 6px 22px}
  .hero h1{font-size:24px}
  /* index rows: let badges drop below the description; break long labels */
  .row{flex-wrap:wrap}
  .row .desc{flex:1 1 100%}
  .badge{white-space:normal;overflow-wrap:anywhere}
  .topic,.row .desc{overflow-wrap:anywhere}
}
@media (max-width:420px){
  .brand-link h1{font-size:16px}
  .nav{font-size:14px}
}