/* Centerfield TRACON — radar scope theme */
:root {
  --bg: #050b06;
  --panel: #0a140c;
  --panel2: #0d1a10;
  --line: #1d3a24;
  --green: #3cf06c;
  --green-dim: #1f7a3c;
  --white: #e8f5ec;
  --amber: #ffb545;
  --red: #ff4d4d;
  --blue: #46c8ff;
  --mono: "Courier New", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--green);
  font-family: var(--mono);
  overflow: hidden;
}

#app { display: flex; flex-direction: column; height: 100vh; }

/* ---------- Top bar ---------- */
#topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  flex: 0 0 auto;
}

.brand { font-weight: bold; letter-spacing: 2px; color: var(--white); white-space: nowrap; }
.brand span { color: var(--green); }

.hud { display: flex; gap: 14px; flex: 1 1 auto; flex-wrap: wrap; }
.hud-item { font-size: 13px; color: var(--green-dim); white-space: nowrap; }
.hud-item b { color: var(--green); margin-left: 4px; font-size: 15px; }
.hud-item.ok b { color: var(--blue); }
.hud-item.bad b { color: var(--red); }

.actions { display: flex; gap: 8px; align-items: center; }

button, a.btn {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--panel2);
  color: var(--green);
  border: 1px solid var(--green-dim);
  padding: 5px 10px;
  cursor: pointer;
  text-decoration: none;
  letter-spacing: 1px;
  border-radius: 2px;
}
button:hover, a.btn:hover { background: var(--green-dim); color: var(--white); }
button:disabled { opacity: 0.35; cursor: default; }
button:disabled:hover { background: var(--panel2); color: var(--green); }

/* ---------- Layout ---------- */
main { display: flex; flex: 1 1 auto; min-height: 0; }

#radarWrap { position: relative; flex: 1 1 auto; min-width: 0; background: var(--bg); }
#radar { display: block; width: 100%; height: 100%; cursor: crosshair; }
#simRate {
  position: absolute; left: 10px; bottom: 8px;
  font-size: 11px; color: var(--green-dim); letter-spacing: 2px;
  pointer-events: none;
}

#side {
  flex: 0 0 330px;
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border-left: 1px solid var(--line);
  min-height: 0;
}

#side section { border-bottom: 1px solid var(--line); padding: 10px 12px; min-height: 0; }
#side h2 {
  font-size: 11px; letter-spacing: 3px; color: var(--green-dim);
  margin-bottom: 8px; font-weight: normal;
}

/* ---------- Control panel ---------- */
#panel { flex: 0 0 auto; }
#selNone { font-size: 12px; color: var(--green-dim); line-height: 1.6; padding: 6px 0 8px; }
#selHead { font-size: 15px; color: var(--white); margin-bottom: 2px; }
#selHead span { color: var(--green-dim); font-size: 12px; }
#selStat { font-size: 12px; color: var(--green); margin-bottom: 8px; min-height: 16px; }

.row { display: flex; align-items: center; gap: 5px; margin-bottom: 7px; }
.row label { flex: 0 0 34px; font-size: 11px; color: var(--green-dim); letter-spacing: 1px; }
.row button { padding: 4px 6px; font-size: 11px; flex: 0 0 auto; }
.row .val { flex: 1 1 auto; text-align: center; color: var(--white); font-size: 14px; }
#hdgInput {
  width: 52px; background: var(--bg); border: 1px solid var(--green-dim);
  color: var(--white); font-family: var(--mono); font-size: 14px;
  text-align: center; padding: 3px 2px;
}
.row.appr button { flex: 1 1 auto; }
#ilsX { flex: 0 0 auto; }
#towerNote { font-size: 11px; color: var(--blue); padding-top: 2px; }

/* ---------- Strips ---------- */
#stripsBox { flex: 1 1 auto; display: flex; flex-direction: column; overflow: hidden; }
#strips { overflow-y: auto; flex: 1 1 auto; }
.strip {
  border: 1px solid var(--line);
  border-left: 4px solid var(--green-dim);
  background: var(--panel2);
  padding: 4px 8px;
  margin-bottom: 5px;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  gap: 6px;
  line-height: 1.45;
}
.strip:hover { border-color: var(--green-dim); }
.strip.sel { border-color: var(--white); border-left-color: var(--white); }
.strip .cs { color: var(--white); font-weight: bold; }
.strip .sub { color: var(--green-dim); font-size: 11px; }
.strip .st { text-align: right; font-size: 11px; }
.strip.ils { border-left-color: var(--blue); }
.strip.lf { border-left-color: var(--amber); }
.strip.conflict { border-left-color: var(--red); }
.strip .warn { color: var(--amber); }
.strip .crit { color: var(--red); }
.strip .ilsTag { color: var(--blue); }

/* ---------- Comms ---------- */
#commsBox { flex: 0 0 190px; display: flex; flex-direction: column; overflow: hidden; }
#comms { overflow-y: auto; flex: 1 1 auto; font-size: 11px; line-height: 1.55; }
#comms .msg { margin-bottom: 2px; color: var(--green); }
#comms .msg .t { color: var(--green-dim); margin-right: 6px; }
#comms .msg.twr { color: var(--blue); }
#comms .msg.warn { color: var(--amber); }
#comms .msg.bad { color: var(--red); }

/* ---------- Overlays ---------- */
.overlay {
  position: fixed; inset: 0;
  background: rgba(3, 8, 4, 0.88);
  display: flex; align-items: center; justify-content: center;
  z-index: 20;
}
.overlay.hidden, .hidden { display: none !important; }

.card {
  background: var(--panel);
  border: 1px solid var(--green-dim);
  padding: 30px 38px;
  max-width: 560px;
  width: min(560px, 92vw);
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: 0 0 40px rgba(60, 240, 108, 0.12);
}
.card h1 { color: var(--white); letter-spacing: 3px; font-size: 24px; margin-bottom: 6px; }
.card h1 span { color: var(--green); }
.card h3 { color: var(--green-dim); letter-spacing: 3px; font-size: 12px; margin: 18px 0 8px; }
.card p { font-size: 13px; line-height: 1.6; margin-bottom: 10px; color: var(--green); }
.card .tag { color: var(--green-dim); letter-spacing: 1px; }
.card .score-line { color: var(--green-dim); }
.card .score-line b { color: var(--amber); font-size: 16px; }
.card a { color: var(--blue); }

#levelBtns { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
#levelBtns button { font-size: 13px; padding: 8px 14px; }

.btnrow { display: flex; gap: 10px; margin-top: 18px; }
.btnrow button { font-size: 13px; padding: 8px 16px; }

#endStats { font-size: 13px; line-height: 1.9; }
#endStats b { color: var(--white); }
#endStats .pass { color: var(--blue); }
#endStats .fail { color: var(--red); }
#endStats .bonus { color: var(--amber); }

/* ---------- Instructions page ---------- */
body.docs { overflow: auto; }
.docwrap { max-width: 860px; margin: 0 auto; padding: 30px 24px 80px; }
.docwrap h1 { color: var(--white); letter-spacing: 3px; margin-bottom: 4px; }
.docwrap h1 span { color: var(--green); }
.docwrap .tag { color: var(--green-dim); margin-bottom: 24px; }
.docwrap h2 {
  color: var(--white); font-size: 16px; letter-spacing: 2px;
  margin: 28px 0 10px; border-bottom: 1px solid var(--line); padding-bottom: 6px;
}
.docwrap p, .docwrap li { font-size: 14px; line-height: 1.7; margin-bottom: 8px; }
.docwrap ul, .docwrap ol { margin: 0 0 10px 24px; }
.docwrap b { color: var(--white); }
.docwrap .amber { color: var(--amber); }
.docwrap .red { color: var(--red); }
.docwrap .blue { color: var(--blue); }
.docwrap code {
  background: var(--panel2); border: 1px solid var(--line);
  padding: 1px 6px; font-size: 13px; color: var(--white);
}
.docwrap table { border-collapse: collapse; margin: 8px 0 14px; }
.docwrap th, .docwrap td {
  border: 1px solid var(--line); padding: 5px 12px; font-size: 13px; text-align: left;
}
.docwrap th { color: var(--green-dim); letter-spacing: 1px; font-weight: normal; }
.docwrap .backlink { display: inline-block; margin-bottom: 18px; color: var(--blue); }

/* Narrow screens: stack sidebar under radar */
@media (max-width: 900px) {
  main { flex-direction: column; overflow-y: auto; }
  #radarWrap { flex: 0 0 60vh; }
  #side { flex: 1 1 auto; border-left: none; border-top: 1px solid var(--line); }
}