/* ==============================================================
 * /flightsim — a standalone HUD.
 * Black glass, phosphor green, one monospace face for data and one
 * condensed face for display. Hierarchy comes from size, weight and
 * glow, not colour: bright green is for what matters, dim green for
 * what supports it, amber for the one warning.
 * ============================================================== */

:root {
  --g: #39ff6a;
  --g-hot: #b6ffcb;                       /* headline glow core */
  --g-dim: rgba(57, 255, 106, 0.62);
  --g-faint: rgba(57, 255, 106, 0.22);
  --g-ghost: rgba(57, 255, 106, 0.07);
  --amber: #ffb000;
  --bg: #000;
  --mono: "Share Tech Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --cond: "Barlow Condensed", "Share Tech Mono", ui-sans-serif, sans-serif;
  --glow: 0 0 6px rgba(57, 255, 106, 0.45);
  --glow-big: 0 0 14px rgba(57, 255, 106, 0.55), 0 0 40px rgba(57, 255, 106, 0.25);
  --measure: 62ch;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { background: var(--bg); scroll-behavior: smooth; }
body.hud {
  background: var(--bg);
  color: var(--g);
  font-family: var(--mono);
  font-size: 17px;
  line-height: 1.6;
  text-shadow: var(--glow);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
}
body.hud::before {
  content: "";
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(0,0,0,0) 0 2px, rgba(0,0,0,0.26) 2px 3px),
    radial-gradient(ellipse at center, rgba(0,0,0,0) 55%, rgba(0,0,0,0.6) 100%);
}
/* Parallax backdrop: a sparse star field and a faint horizon, moved by JS on scroll */
.stars {
  position: fixed; left: 0; top: 0; width: 100%; height: 160vh; z-index: 0; pointer-events: none; will-change: transform;
  background-image:
    radial-gradient(1px 1px at 12% 18%, rgba(57,255,106,0.55) 50%, transparent 51%),
    radial-gradient(1px 1px at 78% 9%, rgba(57,255,106,0.4) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 40% 33%, rgba(57,255,106,0.5) 50%, transparent 51%),
    radial-gradient(1px 1px at 88% 44%, rgba(57,255,106,0.45) 50%, transparent 51%),
    radial-gradient(1px 1px at 24% 61%, rgba(57,255,106,0.35) 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 64% 72%, rgba(57,255,106,0.5) 50%, transparent 51%),
    radial-gradient(1px 1px at 8% 86%, rgba(57,255,106,0.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 52% 94%, rgba(57,255,106,0.35) 50%, transparent 51%),
    radial-gradient(1px 1px at 95% 78%, rgba(57,255,106,0.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 33% 5%, rgba(57,255,106,0.3) 50%, transparent 51%);
  background-size: 900px 700px;
}
.horizon {
  position: fixed; left: -10%; top: 58vh; width: 120%; height: 1px; z-index: 0; pointer-events: none; will-change: transform;
  background: linear-gradient(90deg, transparent, rgba(57,255,106,0.35) 30%, rgba(57,255,106,0.35) 70%, transparent);
}
.horizon::before, .horizon::after {
  content: ""; position: absolute; top: -18px; width: 1px; height: 36px; background: rgba(57,255,106,0.35);
}
.horizon::before { left: 30%; } .horizon::after { right: 30%; }
.hud-wrap { position: relative; z-index: 1; max-width: 1180px; margin: 0 auto; padding: 0 24px 90px; }

a { color: var(--g); text-decoration: none; }
a:hover { color: #fff; text-shadow: 0 0 10px var(--g); }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; text-shadow: inherit; }

.dim { color: var(--g-dim); }
.small { font-size: 12px; letter-spacing: 0.06em; }

/* ---------- Boot sequence ---------- */
.boot {
  position: fixed; inset: 0; z-index: 100; background: #000;
  display: flex; align-items: center; justify-content: center;
  transition: opacity 500ms ease;
}
.boot.done { opacity: 0; pointer-events: none; }
.boot { flex-direction: column; gap: 22px; }
.boot-lines { font-family: var(--mono); font-size: 15px; letter-spacing: 0.08em; line-height: 1.7; color: var(--g); text-shadow: var(--glow); min-width: 26ch; min-height: calc(1.7em * 6); }
.boot-start { border: 1px solid var(--g); padding: 14px 26px; font-size: 16px; letter-spacing: 0.18em; color: var(--g-hot); text-shadow: var(--glow-big); animation: pulse 1.4s ease-in-out infinite; }
.boot-start:hover, .boot-start:focus-visible { background: var(--g); color: #000; text-shadow: none; outline: none; }
.boot-hint { font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--g-dim); }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 rgba(57,255,106,0); } 50% { box-shadow: 0 0 26px rgba(57,255,106,0.5); } }

/* ---------- Top: HUD frame ---------- */
.hud-top {
  position: relative;
  padding: 28px 0 24px;
  display: grid;
  grid-template-columns: 90px 1fr 90px;
  grid-template-rows: auto 1fr auto;
  gap: 12px;
}
.tape-h { grid-column: 1 / -1; display: flex; flex-direction: column; align-items: center; gap: 4px; }
.tape-h .caret { font-size: 14px; }
.tape-h .ticks {
  width: min(560px, 100%); height: 18px;
  background:
    repeating-linear-gradient(90deg, var(--g) 0 1px, transparent 1px 28px) 0 100% / 100% 8px no-repeat,
    repeating-linear-gradient(90deg, var(--g) 0 1px, transparent 1px 140px) 0 100% / 100% 16px no-repeat;
  animation: tape-drift 14s linear infinite;
}
@keyframes tape-drift { from { background-position: 0 100%, 0 100%; } to { background-position: 140px 100%, 140px 100%; } }
.tape-h .hdg { border: 1px solid var(--g); padding: 2px 10px; font-size: 14px; }

.tape-v { display: flex; flex-direction: column; justify-content: space-between; padding: 24px 0; font-size: 12px; }
.tape-v.left { align-items: flex-end; padding-right: 12px; border-right: 1px solid var(--g-faint); }
.tape-v.right { align-items: flex-start; padding-left: 12px; border-left: 1px solid var(--g-faint); }
.tape-v .box { border: 1px solid var(--g); padding: 2px 8px; font-size: 14px; white-space: nowrap; }
.tape-v .box.pointed-r { clip-path: polygon(0 0, 85% 0, 100% 50%, 85% 100%, 0 100%); padding-right: 16px; }
.tape-v .box.pointed-l { clip-path: polygon(15% 0, 100% 0, 100% 100%, 15% 100%, 0 50%); padding-left: 16px; }

.hud-centre { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 24px 10px 12px; }
.ladder {
  position: absolute; inset: 0; pointer-events: none; opacity: 0.3;
  background:
    linear-gradient(var(--g), var(--g)) 18% 26% / 80px 1px no-repeat,
    linear-gradient(var(--g), var(--g)) 82% 26% / 80px 1px no-repeat,
    linear-gradient(var(--g), var(--g)) 22% 76% / 60px 1px no-repeat,
    linear-gradient(var(--g), var(--g)) 78% 76% / 60px 1px no-repeat;
}
.ladder span { position: absolute; font-size: 11px; }
.fpm { width: 26px; height: 26px; border: 1.5px solid var(--g); border-radius: 50%; position: relative; margin-bottom: 20px; }
.fpm::before, .fpm::after { content: ""; position: absolute; background: var(--g); }
.fpm::before { left: -22px; right: -22px; top: 50%; height: 1.5px; }
.fpm::after  { top: -14px; left: 50%; width: 1.5px; height: 12px; }

.hud-title {
  font-family: var(--cond); font-weight: 600;
  font-size: clamp(56px, 9vw, 104px); line-height: 0.92; letter-spacing: 0.02em; text-transform: uppercase;
  color: var(--g-hot); text-shadow: var(--glow-big);
}
.hud-lede { margin-top: 22px; max-width: 58ch; font-size: 19px; line-height: 1.55; color: var(--g); text-wrap: balance; }

.tldr { margin-top: 26px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; width: min(820px, 100%); }
.tldr a { border: 1px solid var(--g); padding: 14px 14px 12px; display: block; text-align: left; transition: background 150ms ease, box-shadow 150ms ease; }
.tldr a:hover { background: var(--g-ghost); color: var(--g); box-shadow: 0 0 18px rgba(57,255,106,0.25); }
.tldr .n, .tldr .t, .tldr .d { display: block; }
.tldr .t { font-family: var(--cond); font-size: 32px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; line-height: 1; margin: 0 0 8px; color: var(--g-hot); }
.tldr .d { font-size: 13.5px; line-height: 1.45; }

.hud-corner { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: flex-end; font-size: 13px; line-height: 1.5; }
.hud-corner .r { text-align: right; }
.hud-corner .boxed { border: 1px solid var(--g); padding: 0 6px; }
.anthem { position: fixed; top: 14px; right: 14px; z-index: 60; display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }
.audio-btn { background: #000; display: inline-flex; align-items: center; gap: 10px; border: 1px solid var(--g); padding: 10px 16px; font-size: 13px; letter-spacing: 0.14em; text-transform: uppercase; transition: border-color 150ms ease; }
.audio-btn:hover { border-color: var(--g); }
.audio-btn .lamp { width: 8px; height: 8px; background: var(--g-faint); }
.audio-btn[aria-pressed="true"] .lamp { background: var(--g); box-shadow: 0 0 10px var(--g); animation: blink 0.65s steps(2, start) infinite; }

/* ---------- Sections ---------- */
.sec { margin-top: 72px; }
.sec-head { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; font-family: var(--cond); font-size: 16px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--g-dim); }
.sec-head .gloss { font-weight: 400; }
.sec-head::after { content: ""; flex: 1; height: 1px; background: linear-gradient(90deg, var(--g-faint), transparent); }
.sec-head .k { border: 1px solid var(--g); padding: 2px 10px; color: var(--g); font-weight: 600; font-family: var(--mono); font-size: 13px; letter-spacing: 0.16em; }

/* ---------- Crawl (the intro) ---------- */
body.no-scroll { overflow: hidden; }
.crawl { position: fixed; inset: 0; z-index: 90; background: #000; overflow: hidden; transition: opacity 700ms ease; }
.crawl.done { opacity: 0; pointer-events: none; }
.crawl.reveal { background: transparent; pointer-events: none; transition: background 1200ms ease; }
.crawl.reveal .crawl-fade { opacity: 0; transition: opacity 1200ms ease; }
.crawl.reveal .crawl-skip { pointer-events: auto; }
.crawl.reveal { pointer-events: none; }
.crawl-stage { position: absolute; inset: 0; perspective: 420px; perspective-origin: 50% 30%; overflow: hidden; }
.crawl-text {
  position: absolute; left: 50%; bottom: 0; width: min(760px, 88vw);
  transform-origin: 50% 100%;
  transform: translateX(-50%) rotateX(24deg) translateY(110vh);
  font-family: var(--cond); font-weight: 500; font-size: clamp(26px, 4vw, 44px); line-height: 1.35; text-align: justify;
  color: var(--g); text-shadow: var(--glow);
}
.crawl-text.go { animation: crawl 64s linear forwards; }
.crawl-text p { margin-bottom: 1.1em; }
.crawl-kicker { text-align: center; text-transform: uppercase; letter-spacing: 0.14em; font-weight: 600; color: var(--g-hot); text-shadow: var(--glow-big); margin-bottom: 1.6em !important; }
@keyframes crawl {
  from { transform: translateX(-50%) rotateX(24deg) translateY(110vh); }
  to   { transform: translateX(-50%) rotateX(24deg) translateY(-160%); }
}
.crawl-fade { position: absolute; left: 0; right: 0; top: 0; height: 32vh; z-index: 2; pointer-events: none; background: linear-gradient(#000 20%, transparent); }
.crawl-hint { position: fixed; left: 18px; bottom: 22px; z-index: 3; font-family: var(--cond); font-size: 14px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--g-dim); }
.crawl.reveal .crawl-hint { opacity: 0; transition: opacity 400ms ease; }
.crawl-skip { position: fixed; right: 18px; bottom: 18px; z-index: 3; border: 1px solid var(--g-faint); background: #000; padding: 9px 14px; font-size: 12px; letter-spacing: 0.16em; color: var(--g-dim); }
.crawl-skip:hover { border-color: var(--g); color: var(--g); }
.link { font: inherit; color: var(--g-dim); letter-spacing: inherit; }
.link:hover { color: var(--g); }

/* ---------- Power-on: the guide switches on like a CRT while the crawl leaves ---------- */
.hud-wrap.pre { opacity: 0; }
.hud-wrap.power-on { animation: crt-on 1100ms cubic-bezier(0.2, 0.9, 0.3, 1) both; }
@keyframes crt-on {
  0%   { opacity: 0; transform: scale(1, 0.004); filter: brightness(6) blur(1px); }
  30%  { opacity: 1; transform: scale(1.04, 0.012); filter: brightness(8) blur(1px); }
  55%  { transform: scale(1, 1); filter: brightness(2.4) blur(0); }
  100% { opacity: 1; transform: none; filter: none; }
}
.hud-wrap.power-on .tape-h, .hud-wrap.power-on .tape-v, .hud-wrap.power-on .fpm, .hud-wrap.power-on .hud-title,
.hud-wrap.power-on .hud-lede, .hud-wrap.power-on .tldr, .hud-wrap.power-on .hud-corner {
  animation: hud-in 600ms ease-out both;
}
.hud-wrap.power-on .tape-h { animation-delay: 700ms; }
.hud-wrap.power-on .tape-v { animation-delay: 850ms; }
.hud-wrap.power-on .fpm { animation-delay: 1000ms; }
.hud-wrap.power-on .hud-title { animation-delay: 1100ms; }
.hud-wrap.power-on .hud-lede { animation-delay: 1350ms; }
.hud-wrap.power-on .tldr { animation-delay: 1550ms; }
.hud-wrap.power-on .hud-corner { animation-delay: 1750ms; }
@keyframes hud-in {
  0%   { opacity: 0; transform: translateY(6px); }
  40%  { opacity: 0.35; }
  55%  { opacity: 1; }
  70%  { opacity: 0.6; }
  100% { opacity: 1; transform: none; }
}

/* ---------- Worlds (the pitch) ---------- */
.world { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 34px; align-items: center; padding: 26px 0; border-top: 1px solid var(--g-faint); }
.world:last-child { border-bottom: 1px solid var(--g-faint); }
.world.flip .shot { order: 2; }
.world-tag { font-family: var(--cond); font-size: 17px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--g-dim); margin-bottom: 6px; }
.world-name { font-family: var(--cond); font-size: 44px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; line-height: 1; margin-bottom: 14px; }
.world-name a { color: var(--g-hot); text-shadow: var(--glow-big); }
.world-name a:hover { color: #fff; }
.world-pitch { font-size: 17px; line-height: 1.65; max-width: var(--measure); }

/* ---------- Shots (thumbnails → lightbox) ---------- */
.shot {
  position: relative; display: block; width: 100%; padding: 0; overflow: hidden;
  border: 1px solid var(--g-faint); background: #000;
  transition: border-color 200ms ease, box-shadow 200ms ease;
}
.shot img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; filter: grayscale(1) contrast(1.05); opacity: 0.85; transform: scale(1.12); will-change: transform; transition: filter 350ms ease, opacity 350ms ease; }
.shot::after { content: ""; position: absolute; inset: 0; background: rgba(57,255,106,0.32); mix-blend-mode: multiply; transition: opacity 350ms ease; pointer-events: none; }
.shot:hover, .shot:focus-visible { border-color: var(--g); box-shadow: 0 0 22px rgba(57,255,106,0.3); outline: none; }
.shot:hover img, .shot:focus-visible img { filter: none; opacity: 1; }
.shot:hover::after, .shot:focus-visible::after { opacity: 0; }
.shot-tag { position: absolute; left: 10px; bottom: 8px; font-family: var(--cond); font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; background: rgba(0,0,0,0.7); padding: 3px 8px; border: 1px solid var(--g-faint); }
.mfd-shots .shot img { aspect-ratio: 3 / 2; }

/* ---------- MFD panels ---------- */
.mfd { position: relative; border: 1px solid var(--g-faint); padding: 26px 28px 22px; margin-bottom: 28px; scroll-margin-top: 24px; transition: border-color 200ms ease; }
.mfd:hover { border-color: var(--g-dim); }
.mfd::before, .mfd::after, .mfd .c3, .mfd .c4 { content: ""; position: absolute; width: 16px; height: 16px; border: 1.5px solid var(--g); }
.mfd::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.mfd::after  { top: -1px; right: -1px; border-left: 0; border-bottom: 0; }
.mfd .c3 { bottom: -1px; left: -1px; border-right: 0; border-top: 0; }
.mfd .c4 { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.mfd-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 18px; margin-bottom: 4px; }
.mfd-head .name { font-family: var(--cond); font-size: 52px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; line-height: 1; color: var(--g-hot); text-shadow: var(--glow-big); }
.mfd-head .call { font-family: var(--cond); font-size: 18px; color: var(--g-dim); text-transform: uppercase; letter-spacing: 0.14em; }
.mfd-tldr { font-size: 19px; margin-bottom: 24px; }
.mfd-tldr::before { content: "> "; color: var(--g-dim); }

.mfd-body { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 30px; align-items: start; }
.mfd-shots { display: grid; gap: 12px; }
.mfd-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 30px; }
.mfd-col .lbl { font-family: var(--cond); font-size: 15px; font-weight: 600; color: var(--g-dim); letter-spacing: 0.16em; text-transform: uppercase; margin-bottom: 12px; padding-bottom: 6px; border-bottom: 1px solid var(--g-faint); }
.item { margin-bottom: 14px; }
.item .nm { display: block; font-family: var(--cond); font-size: 22px; font-weight: 500; line-height: 1.15; }
.item a.nm::after { content: " ↗"; font-size: 14px; color: var(--g-dim); }
.item a.nm:hover::after { color: #fff; }
.item .nt { display: block; font-size: 14px; color: var(--g-dim); line-height: 1.45; margin-top: 3px; }

.mfd-foot { margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--g-faint); display: flex; flex-wrap: wrap; gap: 8px 18px; align-items: baseline; font-size: 15px; }
.mfd-foot .k { font-family: var(--cond); font-weight: 600; color: var(--g-dim); letter-spacing: 0.16em; text-transform: uppercase; font-size: 14px; }

/* ---------- Wingman ---------- */
.wingman { max-width: var(--measure); }
.wingman p { margin-bottom: 16px; font-size: 16px; color: var(--g-dim); }
.wingman p.big { font-size: 19px; color: var(--g); }
.btn { display: inline-block; border: 1px solid var(--g); padding: 12px 20px; margin: 6px 0 16px; font-size: 14px; letter-spacing: 0.16em; text-transform: uppercase; transition: background 150ms ease, box-shadow 150ms ease; }
.btn:hover { background: var(--g); color: #000; text-shadow: none; box-shadow: 0 0 24px rgba(57,255,106,0.45); }
.caution { display: inline-flex; align-items: center; gap: 12px; border: 1px solid var(--amber); padding: 8px 14px; font-size: 13px; letter-spacing: 0.06em; color: var(--amber); text-shadow: 0 0 6px rgba(255,176,0,0.5); }
.caution .lamp { width: 10px; height: 10px; background: var(--amber); box-shadow: 0 0 10px var(--amber); animation: blink 1.6s steps(2, start) infinite; }
@keyframes blink { to { visibility: hidden; } }

.foot { margin-top: 70px; font-size: 12px; letter-spacing: 0.06em; color: var(--g-dim); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }
.cursor::after { content: "_"; animation: blink 1s steps(2, start) infinite; }

/* ---------- Lightbox ---------- */
.lightbox { border: 1px solid var(--g); background: #000; padding: 0; max-width: min(96vw, 1400px); max-height: 94vh; color: var(--g); font-family: var(--mono); }
.lightbox::backdrop { background: rgba(0,0,0,0.88); }
.lightbox img { display: block; max-width: 100%; max-height: calc(94vh - 60px); object-fit: contain; }
.lb-close { position: absolute; top: 8px; right: 10px; font-size: 12px; letter-spacing: 0.14em; background: rgba(0,0,0,0.75); border: 1px solid var(--g-faint); padding: 5px 9px; }
.lb-close:hover { border-color: var(--g); color: #fff; }
.lb-cap { padding: 10px 14px; font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; border-top: 1px solid var(--g-faint); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .mfd-body { grid-template-columns: 1fr; }
  .mfd-shots { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .world, .world.flip { grid-template-columns: 1fr; gap: 18px; }
  .world.flip .shot { order: 0; }
  .world-name { font-size: 36px; }
}
@media (max-width: 640px) {
  body.hud { font-size: 16px; }
  .hud-wrap { padding: 0 18px 70px; }
  .hud-top { grid-template-columns: 1fr; }
  .tape-v { display: none; }
  .hud-lede { font-size: 17px; }
  .tldr { grid-template-columns: 1fr; }
  .mfd { padding: 20px 16px; }
  .mfd-head .name { font-size: 42px; }
  .mfd-shots, .mfd-grid { grid-template-columns: 1fr; }
  .hud-corner { flex-direction: column; align-items: flex-start; gap: 12px; }
  .hud-corner .r { text-align: left; }
  .anthem { top: 10px; right: 10px; }
  .hud-top { padding-top: 64px; }
}
@media (prefers-reduced-motion: reduce) {
  .tape-h .ticks, .caution .lamp, .cursor::after, .audio-btn .lamp, .boot-start { animation: none; }
  .hud-wrap.pre { opacity: 1; }
  .hud-wrap.power-on, .hud-wrap.power-on * { animation: none !important; }
  .shot img { transition: none; }
}