/* Fonts are self-hosted (Inter and JetBrains Mono, SIL Open Font License; see vendor/fonts). */
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400; font-display: swap; src: url("vendor/fonts/inter-latin-400-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 400; font-display: swap; src: url("vendor/fonts/inter-latin-ext-400-normal.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 500; font-display: swap; src: url("vendor/fonts/inter-latin-500-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 500; font-display: swap; src: url("vendor/fonts/inter-latin-ext-500-normal.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 600; font-display: swap; src: url("vendor/fonts/inter-latin-600-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 600; font-display: swap; src: url("vendor/fonts/inter-latin-ext-600-normal.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 700; font-display: swap; src: url("vendor/fonts/inter-latin-700-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Inter"; font-style: normal; font-weight: 700; font-display: swap; src: url("vendor/fonts/inter-latin-ext-700-normal.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 500; font-display: swap; src: url("vendor/fonts/jetbrains-mono-latin-500-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "JetBrains Mono"; font-style: normal; font-weight: 700; font-display: swap; src: url("vendor/fonts/jetbrains-mono-latin-700-normal.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

/* Nonstop: dark theme, sized in rem so browser text zoom works. Contrast checked to WCAG AA. */
:root {
  --bg: #0b1015;
  --panel: #0e141b;
  --raise: #151d26;
  --hover: #1b2631;
  --line: #2a3846;
  --text: #edf2f7;
  --muted: #aab7c4;       /* 8.4:1 on panel */
  --amber: #ffc164;       /* 11:1 on panel */
  --cyan: #6fd8ff;
  --violet: #c4b5ff;
  --focus: #ffd38a;
  --ink: #0b1015;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --tabs-h: 0px;
}
* { box-sizing: border-box; }
html { font-size: 100%; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font-family: var(--sans); }
body { display: flex; overflow: hidden; line-height: 1.45; }
h1, h2, h3, p { margin: 0; }
a { color: var(--amber); }
.sr { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[hidden] { display: none !important; }

/* visible keyboard focus everywhere */
:focus { outline: none; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 6px; }
h2:focus-visible { outline-offset: 4px; }

.skip {
  position: absolute; left: 12px; top: -60px; z-index: 2000;
  background: var(--amber); color: var(--ink); font-weight: 700; padding: .6rem 1rem; border-radius: 8px; text-decoration: none;
}
.skip:focus { top: 12px; }

/* ---------- layout ---------- */
#panel {
  width: 26rem; max-width: 100%; flex: none; height: 100%;
  display: flex; flex-direction: column;
  background: var(--panel); border-right: 1px solid var(--line);
  padding: 1.1rem 1.1rem .75rem; gap: 1rem; z-index: 2; overflow: hidden;
}
#content { flex: 1; min-height: 0; overflow-y: auto; margin: 0 -.4rem; padding: 0 .4rem .5rem; }  /* one scroll area for the whole panel */
#content > section { display: flex; flex-direction: column; gap: .9rem; }
#map { flex: 1; height: 100%; background: var(--bg); position: relative; z-index: 0; isolation: isolate; } /* keep Leaflet layers inside the map */

/* ---------- header ---------- */
.brand { display: flex; align-items: center; gap: .75rem; }
.brand .plane { font-size: 1.7rem; color: var(--amber); transform: rotate(-20deg); }
.brand-text { flex: 1; }
.brand h1 { font: 700 1.35rem/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; }
.brand h1 a { color: var(--amber); text-decoration: none; }
.brand p { margin-top: .3rem; color: var(--muted); font-size: .9rem; }

.settings { position: relative; }
.settings summary {
  list-style: none; cursor: pointer; padding: .5rem .7rem; border-radius: 8px; min-height: 2.75rem;
  display: flex; align-items: center; gap: .35rem; font-size: .9rem; color: var(--text);
  border: 1px solid var(--line); background: var(--raise);
}
.settings summary::-webkit-details-marker { display: none; }
.settings summary:hover { border-color: var(--muted); }
.settings-body {
  position: absolute; right: 0; top: calc(100% + 6px); z-index: 50; width: 15rem;
  background: var(--raise); border: 1px solid var(--line); border-radius: 10px; padding: .75rem;
  box-shadow: 0 12px 30px rgba(0,0,0,.5); display: grid; gap: .75rem;
}
fieldset { border: 0; margin: 0; padding: 0; display: grid; gap: .2rem; }
legend { font-weight: 600; font-size: .9rem; margin-bottom: .3rem; }
fieldset label { display: flex; align-items: center; gap: .55rem; min-height: 2.25rem; cursor: pointer; font-size: .95rem; }
input[type=radio], input[type=checkbox] { width: 1.15rem; height: 1.15rem; accent-color: var(--amber); margin: 0; }

/* ---------- form fields ---------- */
.field { display: grid; gap: .35rem; }
.field-label { font-size: .9rem; font-weight: 600; color: var(--text); }
.field-label .hint { font-weight: 400; color: var(--muted); }
input[type=text], select {
  width: 100%; min-height: 2.75rem; padding: .6rem .75rem; border-radius: 8px;
  border: 1px solid var(--line); background: var(--bg); color: var(--text); font: 500 1rem var(--sans);
}
input[type=text]::placeholder { color: #8796a5; }
input[type=text]:hover, select:hover { border-color: #3d4f61; }
input[type=text]:focus-visible, select:focus-visible { outline-offset: 0; border-color: var(--focus); }
select:disabled { opacity: .6; }
input[type=range] { width: 100%; accent-color: var(--amber); min-height: 2rem; }
.check { display: flex; align-items: center; gap: .6rem; min-height: 2.5rem; cursor: pointer; font-size: .95rem; }

/* ---------- search ---------- */
.search { position: relative; display: grid; gap: .35rem; }
.search-box { position: relative; }
.search-icon { position: absolute; left: .8rem; top: 50%; transform: translateY(-52%); color: var(--muted); font-size: 1.25rem; pointer-events: none; }
#q { padding-left: 2.3rem; font-size: 1.05rem; min-height: 3rem; }
#suggest {
  position: absolute; top: 100%; left: 0; right: 0; margin: .3rem 0 0; padding: .3rem;
  list-style: none; background: var(--raise); border: 1px solid var(--line); border-radius: 10px;
  max-height: 22rem; overflow: auto; z-index: 60; box-shadow: 0 14px 34px rgba(0,0,0,.55);
}
#suggest li { display: flex; gap: .7rem; align-items: center; padding: .55rem .6rem; border-radius: 7px; cursor: pointer; min-height: 2.75rem; }
#suggest li[aria-selected="true"], #suggest li:hover { background: var(--hover); }
#suggest li[aria-selected="true"] { box-shadow: inset 3px 0 0 var(--amber); }
#suggest .kind { font: 600 .7rem var(--sans); text-transform: uppercase; letter-spacing: .05em; padding: .15rem .4rem; border-radius: 4px; flex: none; width: 4.6rem; text-align: center; color: var(--ink); }
#suggest .kind.ap { background: var(--amber); }
#suggest .kind.al { background: var(--cyan); }
#suggest .kind.ac { background: var(--violet); }
#suggest .n { font-size: .95rem; min-width: 0; }
#suggest .n small { display: block; color: var(--muted); font-size: .8rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#suggest .m { font-size: .8rem; color: var(--muted); margin-left: auto; white-space: nowrap; }
#suggest li.none { color: var(--muted); cursor: default; }

/* ---------- buttons ---------- */
.btn {
  font: 600 .95rem var(--sans); border-radius: 8px; cursor: pointer; min-height: 2.75rem;
  padding: .55rem .9rem; border: 1px solid transparent; display: inline-flex; align-items: center; gap: .4rem; justify-content: center;
}
.btn.primary { background: var(--amber); color: var(--ink); }
.btn.primary:hover { background: #ffd08a; }
.btn.secondary { background: var(--raise); color: var(--text); border-color: var(--line); }
.btn.secondary:hover { border-color: var(--muted); }
.btn.link { background: none; color: var(--amber); padding: .4rem .2rem; min-height: 2.5rem; text-decoration: underline; text-underline-offset: 3px; }
.btn.link:hover { color: #ffd08a; }
.back { align-self: flex-start; text-decoration: none !important; }

/* ---------- start screen ---------- */
.how { margin: 0; padding-left: 1.3rem; display: grid; gap: .45rem; color: var(--muted); font-size: .95rem; }
.how b { color: var(--text); font-weight: 600; }
#intro h3 { font-size: .95rem; font-weight: 600; margin-top: .25rem; }
.chips { display: flex; flex-wrap: wrap; gap: .45rem; }
.chips button {
  font: 500 .9rem var(--sans); color: var(--text); background: var(--raise);
  border: 1px solid var(--line); border-radius: 999px; padding: .45rem .85rem; cursor: pointer; min-height: 2.5rem;
  display: inline-flex; align-items: baseline; gap: .4rem;
}
.chips button:hover { border-color: var(--amber); }
.chips button small { font: 700 .75rem var(--mono); color: var(--amber); }
#random { align-self: flex-start; margin-top: .25rem; }

/* ---------- airport / network header ---------- */
.origin { display: flex; gap: .9rem; align-items: center; }
.origin .code {
  font: 700 1.75rem/1 var(--mono); color: var(--ink); background: var(--amber);
  padding: .5rem .6rem; border-radius: 8px; letter-spacing: .05em; flex: none;
}
.origin .code.al { background: var(--cyan); }
.origin .code.ac { background: var(--violet); font-size: 1.1rem; max-width: 9rem; line-height: 1.15; text-align: center; }
.origin h2 { font-size: 1.25rem; font-weight: 700; line-height: 1.25; }
.o-sub { color: var(--muted); font-size: .9rem; margin-top: .15rem; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: 0; }
.stats div { background: var(--raise); border: 1px solid var(--line); border-radius: 10px; padding: .55rem .7rem; }
.stats dt { font-size: .78rem; color: var(--muted); }
.stats dd { margin: .1rem 0 0; font: 700 1.2rem var(--mono); color: var(--cyan); white-space: nowrap; }

/* ---------- filters ---------- */
.filters { border: 1px solid var(--line); border-radius: 10px; background: var(--raise); }
.filters summary {
  cursor: pointer; padding: .6rem .8rem; min-height: 2.75rem; display: flex; align-items: center; gap: .5rem;
  font-weight: 600; font-size: .95rem; border-radius: 10px;
}
.filters summary:hover { background: var(--hover); }
.badge { background: var(--amber); color: var(--ink); border-radius: 999px; font-size: .75rem; font-weight: 700; padding: .1rem .5rem; }
.filters-body { padding: .2rem .8rem .7rem; display: grid; gap: .75rem; }
.filters-body output { font-family: var(--mono); color: var(--amber); }
.filter-actions { display: flex; flex-wrap: wrap; gap: .25rem 1rem; }

/* ---------- lists ---------- */
.list-head { position: sticky; top: 0; z-index: 5; background: var(--panel); padding: .35rem 0; margin-bottom: -.9rem; display: flex; align-items: center; gap: .75rem; justify-content: space-between; }
.summary { font-size: .9rem; color: var(--muted); }
.summary b { color: var(--text); }
.sort { display: flex; align-items: center; gap: .4rem; font-size: .85rem; color: var(--muted); flex: none; }
.sort select { width: auto; min-height: 2.4rem; padding: .35rem .5rem; font-size: .9rem; }
.tip { color: var(--muted); font-size: .9rem; }

.board { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.board li { border-bottom: 1px solid #1c2630; }
.row {
  width: 100%; display: grid; grid-template-columns: 3.4rem 1fr auto; gap: .6rem; align-items: center;
  padding: .55rem .5rem; min-height: 3.25rem; background: none; border: 0; color: inherit; text-align: left;
  font: inherit; cursor: pointer; border-radius: 0;
}
.row:hover, .row.hl { background: var(--hover); }
.row:focus-visible { outline-offset: -3px; border-radius: 6px; }
.row .d { font: 700 .95rem var(--mono); color: var(--amber); }
.row .city { min-width: 0; }
.row .city span { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: .98rem; }
.row .city small { display: block; color: var(--muted); font-size: .82rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row .num { font: 600 .9rem var(--mono); text-align: right; white-space: nowrap; }
.row .num small { display: block; font: 400 .75rem var(--sans); color: var(--muted); }
.board li.empty { color: var(--muted); padding: .9rem .5rem; font-size: .92rem; }

/* ---------- route details ---------- */
.r-head h2 { font-size: 1.3rem; line-height: 1.3; }
.r-head .codes { font: 700 .95rem var(--mono); color: var(--amber); margin-bottom: .2rem; display: block; }
.facts { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: .9rem 0; }
.facts div { background: var(--raise); border: 1px solid var(--line); border-radius: 10px; padding: .5rem .65rem; }
.facts dt { font-size: .78rem; color: var(--muted); }
.facts dd { margin: .1rem 0 0; font-weight: 700; font-size: .98rem; }
.r-actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.r-actions a.btn { text-decoration: none; }
#route h3 { font-size: 1rem; margin: 1.1rem 0 .1rem; }
.r-note { color: var(--muted); font-size: .85rem; }
.al-card { border: 1px solid var(--line); border-radius: 10px; padding: .7rem .8rem; margin-top: .6rem; background: var(--raise); }
.al-card.focus { border-color: var(--cyan); }
.al-card h4 { margin: 0; font-size: 1rem; display: flex; align-items: center; gap: .5rem; }
.al-card h4 .al-code { font: 700 .8rem var(--mono); color: var(--ink); background: var(--cyan); padding: .1rem .35rem; border-radius: 4px; }
.al-card p { font-size: .9rem; color: var(--muted); margin-top: .35rem; }
.al-card .sched { display: inline-block; margin-top: .45rem; font-size: .9rem; }
table.fl { width: 100%; border-collapse: collapse; margin-top: .45rem; font-size: .9rem; }
table.fl th { text-align: left; font-size: .75rem; font-weight: 600; color: var(--muted); padding: .2rem .4rem .3rem 0; border-bottom: 1px solid var(--line); }
table.fl td { padding: .35rem .4rem .35rem 0; vertical-align: top; border-bottom: 1px solid #1f2a35; }
table.fl tr:last-child td { border-bottom: 0; }
table.fl .fn, table.fl .tm { font: 600 .88rem var(--mono); white-space: nowrap; }
table.fl .tm { color: var(--amber); }
table.fl .often { white-space: nowrap; color: var(--muted); }
.tag { font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: .05rem .35rem; }

/* ---------- footer ---------- */
footer { font-size: .82rem; color: var(--muted); display: grid; gap: .3rem; }
footer summary { cursor: pointer; color: var(--text); min-height: 2rem; display: flex; align-items: center; }
footer details p { margin: .35rem 0 0; line-height: 1.5; }
footer a { color: var(--muted); }

#loading {
  position: fixed; inset: 0; display: grid; place-items: center; background: var(--bg);
  font: 600 1rem var(--sans); color: var(--amber); z-index: 1000;
}

/* ---------- map ---------- */
.leaflet-container { background: var(--bg); font-family: var(--sans); }
.leaflet-container:focus-visible { outline: 3px solid var(--focus); outline-offset: -3px; }
.leaflet-tooltip { background: var(--panel); color: var(--text); border: 1px solid var(--line); font: 600 .85rem var(--sans); box-shadow: none; padding: .3rem .5rem; }
.leaflet-tooltip:before { display: none; }
.leaflet-control-attribution { background: rgba(11,16,21,.75) !important; color: var(--muted); }
.leaflet-control-attribution a { color: var(--muted); }
.leaflet-bar a { background: var(--panel); color: var(--text); border-color: var(--line); width: 2.25rem !important; height: 2.25rem !important; line-height: 2.25rem !important; font-size: 1.2rem !important; }
.leaflet-bar a:hover { background: var(--hover); }

/* ---------- mobile: list or map, switched by tabs ---------- */
.view-tabs { display: none; }
@media (max-width: 760px) {
  :root { --tabs-h: 3.5rem; }
  body { display: block; }
  #panel, #map { position: absolute; left: 0; right: 0; top: 0; bottom: var(--tabs-h); width: auto; height: auto; }
  #panel { border-right: 0; padding: .85rem 1rem .5rem; z-index: 3; }
  body[data-view="map"] #panel { display: none; }
  .brand p { display: none; }
  .view-tabs {
    display: grid; grid-template-columns: 1fr 1fr; position: fixed; left: 0; right: 0; bottom: 0; height: var(--tabs-h);
    background: var(--panel); border-top: 1px solid var(--line); z-index: 1100;
  }
  .view-tabs button { background: none; border: 0; color: var(--muted); font: 600 1rem var(--sans); display: flex; align-items: center; justify-content: center; gap: .45rem; }
  .view-tabs button[aria-pressed="true"] { color: var(--amber); box-shadow: inset 0 3px 0 var(--amber); }
  footer .about[open] p { font-size: .8rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}
@media (forced-colors: active) {
  .row:hover, .row.hl { outline: 2px solid CanvasText; }
  .origin .code, .badge, #suggest .kind { forced-color-adjust: none; }
}

/* ---------- Back / Exit, Surprise me, Report an issue ---------- */
.nav-row { display: flex; align-items: center; justify-content: space-between; gap: .75rem; }
.exit {
  background: var(--amber); color: var(--ink); border-color: var(--amber);
  font-weight: 700; padding: .5rem 1rem; box-shadow: 0 0 0 3px rgba(255, 193, 100, .18);
}
.exit:hover { background: #ffd08a; }
.surprise { justify-self: start; min-height: 2.5rem; padding: .4rem .85rem; font-size: .9rem; }
.foot-row { display: flex; align-items: flex-start; gap: .5rem 1rem; flex-wrap: wrap; }
.foot-row .about { flex: 1; min-width: 11rem; }
.report { min-height: 2.25rem; padding: .3rem .75rem; font-size: .85rem; text-decoration: none; color: var(--text); }
.fl-note { font-size: .8rem; color: var(--muted); margin-top: .35rem; }
table.fl .fn small { display: block; font: 500 .68rem var(--sans); color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
footer .legal { font-size: .75rem; }