:root {
  --bg: #f7f6f3; --fg: #1c1b18; --dim: #6d6a63; --card: #ffffff;
  --line: #e4e2dc; --accent: #0b5cad; --code-bg: #eef2f6;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #14161a; --fg: #e8e6e1; --dim: #9a978f; --card: #1d2026;
          --line: #2c3038; --accent: #7db3e8; --code-bg: #101216; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.top { display: flex; justify-content: space-between; align-items: center;
  padding: .8rem 1.2rem; border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; font-size: 1.05rem; color: var(--fg); }
main { max-width: 860px; margin: 0 auto; padding: 1.5rem 1.2rem 3rem; }
footer { max-width: 860px; margin: 0 auto; padding: 1rem 1.2rem 2.5rem;
  color: var(--dim); font-size: .85rem; border-top: 1px solid var(--line); }
footer a { color: var(--dim); text-decoration: underline; }

.hero h1 { font-size: 1.7rem; margin-bottom: .4rem; }
.hint, .sub, .crumbs { color: var(--dim); }
#filter { width: 100%; padding: .65rem .9rem; margin-top: 1rem;
  font-size: 1rem; border: 1px solid var(--line); border-radius: 8px;
  background: var(--card); color: var(--fg); }

.country h2 { font-size: .95rem; text-transform: uppercase; letter-spacing: .06em;
  color: var(--dim); margin: 1.6rem 0 .5rem; }
.grid { list-style: none; display: grid; padding: 0; margin: 0;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: .5rem; }
.grid a { display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: 8px; padding: .55rem .75rem; color: var(--fg); height: 100%; }
.grid a:hover { border-color: var(--accent); text-decoration: none; }
.grid b { font-size: 1.02rem; }
.grid .icao { color: var(--dim); font-size: .8rem; margin-left: .35rem; }
.grid .nm { display: block; font-size: .85rem; line-height: 1.3; }
.grid .city { display: block; font-size: .78rem; color: var(--dim); }

.crumbs { font-size: .85rem; margin-bottom: 1rem; }
h1 { font-size: 1.45rem; line-height: 1.25; }
.code { background: var(--code-bg); border-radius: 8px; padding: .1em .35em; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 1rem 1.2rem; margin: 1.1rem 0; }
.card h2 { font-size: 1.05rem; margin: 0 0 .6rem; }
.summary { font-size: 1.15rem; font-weight: 600; margin: .2rem 0 .8rem; }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: .35rem 1.2rem; margin: 0; }
.facts dt { color: var(--dim); }
.facts dd { margin: 0; }
.cat { font-weight: 700; border-radius: 6px; padding: .05em .45em; font-size: .85rem; }
.cat-vfr { background: #d9f2dd; color: #14691f; }
.cat-mvfr { background: #dbe9fb; color: #1c4f8f; }
.cat-ifr { background: #fbdfdb; color: #8f2318; }
.cat-lifr { background: #f4daf3; color: #7a2173; }
details summary { cursor: pointer; color: var(--dim); margin-top: .6rem; }
pre { background: var(--code-bg); padding: .7rem; border-radius: 8px; overflow-x: auto;
  font-size: .85rem; white-space: pre-wrap; word-break: break-word; }
.src, .links { font-size: .82rem; color: var(--dim); margin-bottom: 0; }
.nearby { list-style: none; padding: 0; margin: 0; }
.nearby li { padding: .25rem 0; }
.dim { color: var(--dim); }
@media (max-width: 560px) { .facts { grid-template-columns: 1fr; } .facts dt { margin-top: .3rem; } }