/* ============================================================================
   Rotor Wash — HUD styling
   Glass-panel flight instrument look over a daylight 3D scene.
   ========================================================================== */

:root {
  --bg: #070b10;
  --glass: rgba(11, 17, 24, 0.66);
  --glass-strong: rgba(9, 14, 20, 0.86);
  --hair: rgba(255, 255, 255, 0.14);
  --hair-soft: rgba(255, 255, 255, 0.08);
  --ink: #eaf2f8;
  --ink-dim: rgba(234, 242, 248, 0.62);
  --ink-faint: rgba(234, 242, 248, 0.38);
  --cyan: #5fe3ff;
  --amber: #ffb454;
  --green: #7ce8a0;
  --red: #ff6b6b;
  --violet: #b39cff;
  --panel-r: 12px;
  --hud-pad: clamp(8px, 1.2vw, 18px);
  --font: "Inter", "SF Pro Text", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", ui-monospace, "JetBrains Mono", "Roboto Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0; height: 100%; overflow: hidden;
  background: var(--bg); color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overscroll-behavior: none;
}

#app { position: fixed; inset: 0; }

#scene { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

.hidden { display: none !important; }

/* ---------- shared panel chrome ---------- */
.panel {
  position: absolute; z-index: 4;
  background: var(--glass);
  border: 1px solid var(--hair);
  border-radius: var(--panel-r);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.32), inset 0 1px 0 rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(9px) saturate(1.1);
  -webkit-backdrop-filter: blur(9px) saturate(1.1);
  pointer-events: none;
}
.panel .micro-label, .micro-label {
  font-size: 9px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-faint); font-weight: 600;
}
#hud { position: absolute; inset: 0; pointer-events: none; }
#hud button, #hud select, #hud input { pointer-events: auto; }
#touch { pointer-events: none; }
#touch * { pointer-events: auto; }

/* ============================ top-left: aircraft state ==================== */
.panel-state { top: var(--hud-pad); left: var(--hud-pad); padding: 10px 13px 9px; min-width: 194px; }
.state-row { display: flex; align-items: center; gap: 9px; }
.led { width: 9px; height: 9px; border-radius: 50%; background: #46525c; box-shadow: 0 0 0 3px rgba(255,255,255,0.04); transition: background .25s, box-shadow .25s; }
.led[data-state="crank"] { background: var(--amber); box-shadow: 0 0 10px rgba(255,180,84,.75); animation: pulse 0.55s infinite alternate; }
.led[data-state="idle"] { background: var(--green); box-shadow: 0 0 9px rgba(124,232,160,.6); }
.led[data-state="run"] { background: var(--cyan); box-shadow: 0 0 11px rgba(95,227,255,.75); }
.led[data-state="warn"] { background: var(--red); box-shadow: 0 0 11px rgba(255,107,107,.8); animation: pulse 0.4s infinite alternate; }
@keyframes pulse { from { opacity: .45 } to { opacity: 1 } }
.state-text { display: flex; flex-direction: column; line-height: 1.15; }
.state-text strong { font-size: 13px; letter-spacing: 0.06em; font-weight: 650; }
.engine-strip { display: flex; gap: 14px; margin: 9px 0 0; padding-top: 8px; border-top: 1px solid var(--hair-soft); }
.engine-strip div { display: flex; flex-direction: column; }
.engine-strip dt { font-size: 9px; letter-spacing: .14em; color: var(--ink-faint); }
.engine-strip dd { margin: 1px 0 0; font-family: var(--mono); font-size: 14px; font-variant-numeric: tabular-nums; }
.engine-strip dd i { font-style: normal; font-size: 9px; color: var(--ink-faint); margin-left: 1px; }
.throttle-chip {
  margin-top: 8px; padding: 3px 6px; border-radius: 5px; text-align: center;
  font-size: 8.5px; letter-spacing: .14em; font-weight: 700;
  border: 1px solid var(--hair-soft); color: var(--ink-faint);
  background: rgba(255, 255, 255, .03); transition: color .2s, border-color .2s, background .2s;
}
.throttle-chip[data-detent="flight"] { color: #06222b; background: var(--cyan); border-color: var(--cyan); }
.throttle-chip[data-detent="rolling"] {
  color: #28190a; background: var(--amber); border-color: var(--amber);
  animation: pulse 0.9s infinite alternate;
}
.throttle-chip[data-detent="spooling"] { color: #06251a; background: var(--green); border-color: var(--green); }

/* ============================ top-right: actions ========================= */
.panel-actions {
  top: var(--hud-pad); right: var(--hud-pad);
  display: flex; flex-direction: column; gap: 2px; padding: 5px; width: 46px;
}
.btn {
  display: flex; flex-direction: column; align-items: center; gap: 1px;
  background: transparent; border: 0; border-radius: 8px; color: var(--ink-dim);
  padding: 7px 2px 5px; cursor: pointer; font-family: inherit; transition: background .16s, color .16s, transform .1s;
}
.btn:hover { background: rgba(255,255,255,.08); color: var(--ink); }
.btn:active { transform: scale(.94); }
.btn[aria-pressed="true"] { color: var(--cyan); background: rgba(95,227,255,.11); }
.btn-glyph { font-size: 15px; line-height: 1; }
.btn-label { font-size: 8px; letter-spacing: .1em; text-transform: uppercase; }

/* ============================ left: attitude ============================= */
.panel-attitude { left: var(--hud-pad); top: 50%; transform: translateY(-50%); padding: 10px; width: 138px; }
.ahi { position: relative; width: 118px; height: 118px; margin: 0 auto; }
.ahi-svg { width: 100%; height: 100%; display: block; overflow: visible; }
.ahi-readouts { position: absolute; left: 0; right: 0; bottom: -2px; display: flex; justify-content: space-between; padding: 0 6px; font-family: var(--mono); font-size: 10px; color: var(--ink-dim); }
.heading-strip { margin-top: 12px; text-align: center; }
.heading-strip strong { display: block; font-family: var(--mono); font-size: 17px; letter-spacing: .04em; }
.tape { position: relative; height: 12px; margin-top: 4px; border-radius: 3px; background: rgba(255,255,255,.05); overflow: hidden; }
.tape::after { content: ""; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--cyan); }
#heading-tape span { position: absolute; top: 1px; font-size: 8px; color: var(--ink-faint); transform: translateX(-50%); }

/* ============================ right: tapes =============================== */
.panel-tapes { right: var(--hud-pad); top: 50%; transform: translateY(-50%); display: flex; gap: 10px; padding: 10px 9px; }
.tape-wrap { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.tape-svg { width: 46px; height: 186px; }
.tape-value { font-family: var(--mono); font-size: 13px; font-variant-numeric: tabular-nums; }
.tape-value i { font-style: normal; font-size: 8px; color: var(--ink-faint); margin-left: 1px; }
.vsi { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px;
  border-left: 1px solid var(--hair-soft); padding-left: 10px; }
.vsi strong { font-family: var(--mono); font-size: 15px; }

/* ============================ bottom: power ============================== */
.panel-power {
  bottom: var(--hud-pad); left: 50%; transform: translateX(-50%);
  display: flex; align-items: stretch; gap: 16px; padding: 11px 16px;
}
.collective-block { display: flex; flex-direction: column; justify-content: space-between; min-width: 184px; }
.collective-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.collective-head strong { font-family: var(--mono); font-size: 17px; font-variant-numeric: tabular-nums; }
.collective-head strong i { font-style: normal; font-size: 10px; color: var(--ink-faint); }
.collective-track { position: relative; height: 12px; margin: 7px 0 5px; border-radius: 7px; background: rgba(255,255,255,.07); overflow: hidden; box-shadow: inset 0 0 0 1px var(--hair-soft); }
.collective-fill { position: absolute; left: 0; top: 0; bottom: 0; width: 0%; border-radius: 7px; background: linear-gradient(90deg, rgba(95,227,255,.85), rgba(124,232,160,.9)); transition: width .06s linear; }
.collective-track.lift .collective-fill { background: linear-gradient(90deg, rgba(95,227,255,.9), rgba(255,180,84,.95)); }
.collective-hover-mark { position: absolute; top: -2px; bottom: -2px; width: 2px; background: rgba(255,255,255,.55); left: 0%; }
.collective-hints { display: flex; justify-content: space-between; gap: 8px; }
.hint-key { font-size: 8.5px; letter-spacing: .1em; color: var(--ink-faint); border: 1px solid var(--hair-soft); border-radius: 4px; padding: 2px 5px; }
.wash-block { display: flex; flex-direction: column; justify-content: space-between; min-width: 116px; border-left: 1px solid var(--hair-soft); padding-left: 16px; }
.wash-rings { display: flex; align-items: flex-end; gap: 3px; height: 20px; margin: 5px 0; }
.wash-rings span { width: 100%; height: 3px; border-radius: 3px; background: var(--cyan); opacity: .22; transition: opacity .2s, height .2s, background .2s; }
.wash-meta { display: flex; justify-content: space-between; align-items: baseline; font-size: 10px; color: var(--ink-dim); }
.wash-meta strong { font-family: var(--mono); font-size: 12px; color: var(--ink); }
.ge-chip { margin-top: 6px; font-size: 8.5px; letter-spacing: .14em; text-align: center; border: 1px solid var(--hair-soft);
  border-radius: 4px; padding: 2px 4px; color: var(--ink-faint); transition: color .2s, border-color .2s, background .2s; }
.ge-chip.on { color: #06222b; background: var(--cyan); border-color: var(--cyan); font-weight: 700; }
.rotor-block { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; border-left: 1px solid var(--hair-soft); padding-left: 14px; }
.rotor-dial { width: 108px; height: 108px; }
.rotor-cap { font-size: 9px; letter-spacing: .18em; fill: var(--ink-faint); font-family: var(--font); }
.rotor-digital { display: flex; align-items: baseline; gap: 2px; font-family: var(--mono); }
.rotor-digital strong { font-size: 16px; font-variant-numeric: tabular-nums; }
.rotor-digital i { font-style: normal; font-size: 10px; color: var(--ink-faint); }
.rotor-digital span { font-size: 9px; color: var(--ink-faint); margin-left: 6px; }
.rotor-block.warn .rotor-digital strong { color: var(--red); animation: pulse .5s infinite alternate; }

/* ============================ mission checklist ========================= */
.panel-mission { left: var(--hud-pad); bottom: var(--hud-pad); padding: 10px 13px 11px; width: 224px; }
.mission-head { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 6px; }
.mission-phase { font-size: 9px; letter-spacing: .13em; color: var(--cyan); font-weight: 700; }
.mission-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.mission-list li { display: flex; align-items: center; gap: 7px; font-size: 11px; color: var(--ink-dim); transition: color .25s; }
.mission-list li .box { width: 11px; height: 11px; border: 1px solid var(--hair); border-radius: 3px; flex: none; position: relative; }
.mission-list li em { font-style: normal; margin-left: auto; font-size: 8.5px; color: var(--ink-faint); letter-spacing: .06em; text-transform: uppercase; }
.mission-list li.done { color: var(--ink-faint); text-decoration: line-through; text-decoration-color: rgba(255,255,255,.25); }
.mission-list li.done .box { background: var(--green); border-color: var(--green); }
.mission-list li.done .box::after { content: "✓"; position: absolute; inset: 0; font-size: 9px; line-height: 11px; text-align: center; color: #06251a; font-weight: 800; }
.mission-list li.active { color: var(--ink); }
.mission-list li.active .box { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(95,227,255,.15); }
.mission-list li span + * { }

/* ============================ annunciators + toasts ==================== */
.annunciators { position: absolute; top: calc(var(--hud-pad) + 96px); left: 50%; transform: translateX(-50%); display: flex; gap: 8px; }
.annunciator {
  font-size: 10px; letter-spacing: .16em; font-weight: 700; padding: 5px 10px; border-radius: 6px;
  background: rgba(255,107,107,.14); border: 1px solid rgba(255,107,107,.5); color: #ffc9c9;
  animation: blink 1s steps(2, end) infinite;
}
.annunciator.amber { background: rgba(255,180,84,.13); border-color: rgba(255,180,84,.5); color: #ffe0b8; }
@keyframes blink { 50% { opacity: .45 } }
.toasts { position: absolute; bottom: calc(var(--hud-pad) + 118px); left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 6px; }
.toast {
  font-size: 11.5px; letter-spacing: .06em; padding: 6px 13px; border-radius: 999px;
  background: var(--glass-strong); border: 1px solid var(--hair); color: var(--ink);
  animation: toast-in .28s ease-out; box-shadow: 0 8px 22px rgba(0,0,0,.35);
}
.toast.good { border-color: rgba(124,232,160,.5); color: #d6ffe6; }
.toast.warn { border-color: rgba(255,180,84,.55); color: #ffe9cd; }
.toast.bad { border-color: rgba(255,107,107,.55); color: #ffd8d8; }
.toast.fade { opacity: 0; transform: translateY(-6px); transition: opacity .5s, transform .5s; }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px) } to { opacity: 1; transform: none } }

/* ============================ touch controls =========================== */
#touch { position: absolute; inset: 0; z-index: 6; }
.stick { position: absolute; left: 22px; bottom: 24px; width: 148px; height: 148px; touch-action: none; }
.stick-ring { position: absolute; inset: 0; border-radius: 50%; border: 1px solid rgba(255,255,255,.22); background: radial-gradient(circle at 50% 50%, rgba(10,16,22,.5), rgba(10,16,22,.18)); }
.stick-ring::after { content: ""; position: absolute; inset: 24%; border-radius: 50%; border: 1px dashed rgba(255,255,255,.14); }
.stick-knob { position: absolute; left: 50%; top: 50%; width: 54px; height: 54px; margin: -27px 0 0 -27px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, rgba(255,255,255,.35), rgba(140,160,175,.25)); border: 1px solid rgba(255,255,255,.4);
  box-shadow: 0 6px 16px rgba(0,0,0,.4); }
.stick-label { position: absolute; left: 0; right: 0; bottom: -16px; text-align: center; font-size: 9px; letter-spacing: .2em; color: var(--ink-faint); }
.touch-right { position: absolute; right: 20px; bottom: 22px; display: flex; align-items: flex-end; gap: 16px; }
.touch-pedals { display: flex; gap: 10px; }
.tbtn { width: 52px; height: 52px; border-radius: 14px; border: 1px solid var(--hair); background: var(--glass-strong); color: var(--ink);
  font-size: 18px; cursor: pointer; touch-action: none; }
.tbtn:active, .tbtn.on { background: rgba(95,227,255,.2); border-color: var(--cyan); }
.touch-collective { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.touch-slider { width: 40px; height: 116px; border-radius: 12px; background: rgba(10,16,22,.6); border: 1px solid var(--hair); position: relative; overflow: hidden; }
.touch-slider-fill { position: absolute; left: 0; right: 0; bottom: 0; height: 0%; background: linear-gradient(0deg, rgba(95,227,255,.8), rgba(124,232,160,.85)); }
.touch-aux { display: flex; flex-direction: column; gap: 10px; }

/* ============================ overlays ================================ */
#overlay { position: absolute; inset: 0; z-index: 8; pointer-events: none; display: grid; place-items: center; }
#overlay > * { pointer-events: auto; }
.card {
  background: var(--glass-strong); border: 1px solid var(--hair); border-radius: 16px;
  box-shadow: 0 24px 70px rgba(0,0,0,.5); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  padding: 22px 24px; color: var(--ink); max-width: min(760px, 92vw); max-height: 86vh; overflow: auto;
}
.card-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.card h2 { margin: 0; font-size: 15px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-dim); font-weight: 600; }
.x { background: none; border: 0; color: var(--ink-faint); font-size: 15px; cursor: pointer; padding: 4px 6px; border-radius: 6px; }
.x:hover { color: var(--ink); background: rgba(255,255,255,.08); }
.intro-head { display: flex; align-items: baseline; gap: 14px; }
.eyebrow { font-size: 10px; letter-spacing: .3em; text-transform: uppercase; color: var(--cyan); font-weight: 700; }
.intro-head h1 { margin: 0; font-size: clamp(22px, 3.4vw, 34px); letter-spacing: -0.01em; font-weight: 650; }
.intro-lead { color: var(--ink-dim); font-size: 13.5px; line-height: 1.6; max-width: 62ch; margin: 12px 0 18px; }
.intro-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.intro-col h2 { font-size: 10px; letter-spacing: .2em; color: var(--ink-faint); margin: 0 0 8px; }
.keylist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.keylist li { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ink-dim); }
.keylist li span { margin-left: auto; color: var(--ink); }
kbd { font-family: var(--mono); font-size: 10px; background: rgba(255,255,255,.09); border: 1px solid var(--hair);
  border-bottom-width: 2px; border-radius: 4px; padding: 1px 5px; color: var(--ink); }
.keylist.dense li span { font-size: 11.5px; text-align: right; max-width: 60%; }
.intro-foot { display: flex; align-items: center; gap: 12px; margin-top: 20px; flex-wrap: wrap; }
.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(180deg, #79ecff, #35c8ea);
  color: #04222b; border: 0; border-radius: 10px; padding: 11px 18px; font-size: 13px; font-weight: 700; letter-spacing: .04em; cursor: pointer;
  box-shadow: 0 8px 22px rgba(53,200,234,.28); font-family: inherit; }
.btn-primary:hover { filter: brightness(1.06); }
.btn-primary .glyph { font-size: 15px; }
.btn-ghost { background: transparent; border: 1px solid var(--hair); color: var(--ink-dim); border-radius: 10px; padding: 10px 14px;
  font-size: 12.5px; cursor: pointer; font-family: inherit; }
.btn-ghost:hover { color: var(--ink); border-color: rgba(255,255,255,.3); }
.intro-note { font-size: 11px; color: var(--ink-faint); margin: 0; flex: 1 1 180px; }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); }
.field select, .field input[type="range"] { font-family: inherit; font-size: 12px; color: var(--ink); background: rgba(255,255,255,.06);
  border: 1px solid var(--hair); border-radius: 8px; padding: 7px 9px; text-transform: none; letter-spacing: 0; }
.field.toggle { flex-direction: row; align-items: center; justify-content: space-between; text-transform: none; letter-spacing: .02em; font-size: 12.5px; color: var(--ink); }
.settings-note { font-size: 11px; color: var(--ink-faint); margin: 4px 0 0; }
.help-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.help-grid h3 { font-size: 10px; letter-spacing: .2em; text-transform: uppercase; color: var(--ink-faint); margin: 0 0 8px; }
.help-foot { font-size: 11.5px; color: var(--ink-faint); margin: 18px 0 0; line-height: 1.55; }
.settings-card { position: absolute; right: var(--hud-pad); top: 74px; width: 280px; max-width: 90vw; }
.help-card { position: absolute; right: var(--hud-pad); top: 74px; width: min(560px, 92vw); }

/* boot */
.boot { position: absolute; inset: 0; z-index: 20; display: grid; place-items: center; background: radial-gradient(120% 100% at 50% 20%, #16212c, #070b10 70%); transition: opacity .6s; }
.boot.gone { opacity: 0; pointer-events: none; }
.boot-inner { text-align: center; }
.boot-rotor { width: 54px; height: 54px; margin: 0 auto 16px; border-radius: 50%; border: 3px dashed rgba(95,227,255,.5); animation: spin 1.4s linear infinite; }
@keyframes spin { to { transform: rotate(360deg) } }
#boot-text { font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--ink-faint); }

/* ============================ responsive ============================== */
@media (max-width: 1180px) {
  .panel-mission { width: 200px; }
  .panel-tapes { gap: 6px; padding: 8px 7px; }
  .tape-svg { width: 40px; height: 164px; }
}
@media (max-width: 980px) {
  .panel-mission { display: none; }
  .panel-attitude { transform: translateY(-50%) scale(.9); transform-origin: left center; }
  .panel-power { gap: 10px; padding: 9px 12px; }
  .collective-block { min-width: 140px; }
  .wash-block { min-width: 96px; padding-left: 10px; }
  .rotor-dial { width: 86px; height: 86px; }
  .intro-cols, .help-grid { grid-template-columns: 1fr; gap: 14px; }
}

/* ------- phone layout: HUD clears the touch controls entirely ------ */
@media (max-width: 760px) {
  .panel-attitude, .panel-tapes, .panel-mission { display: none; }
  .panel-state { top: 8px; left: 8px; min-width: 0; padding: 7px 10px 6px; }
  .state-text strong { font-size: 12px; }
  .engine-strip { gap: 10px; margin-top: 6px; padding-top: 6px; }
  .engine-strip dd { font-size: 12px; }
  .panel-actions {
    top: 8px; right: 8px; width: auto; flex-direction: row; gap: 1px; padding: 4px;
  }
  .btn { padding: 7px 9px 5px; }
  .btn-label { display: none; }
  .panel-power {
    top: 84px; left: 8px; right: 8px; bottom: auto; transform: none;
    gap: 10px; padding: 8px 10px; align-items: center;
  }
  .collective-block { min-width: 0; flex: 1 1 auto; }
  .collective-head strong { font-size: 15px; }
  .wash-block { display: flex; min-width: 0; flex: 0 0 auto; padding-left: 10px; border-left: 1px solid var(--hair-soft); }
  .wash-rings span { height: 2px; }
  .rotor-block { padding-left: 10px; }
  .rotor-dial { width: 62px; height: 62px; }
  .rotor-digital strong { font-size: 13px; }
  .rotor-digital span { display: none; }
  #touch .stick { left: 14px; bottom: 16px; width: 128px; height: 128px; }
  .stick-knob { width: 48px; height: 48px; margin: -24px 0 0 -24px; }
  .touch-right { right: 12px; bottom: 14px; gap: 10px; }
  .tbtn { width: 46px; height: 46px; border-radius: 12px; font-size: 16px; }
  .touch-slider { width: 34px; height: 92px; }
  .annunciators { top: auto; bottom: 214px; }
  .toasts { bottom: 208px; }
  .card { padding: 16px; border-radius: 14px; }
  .settings-card, .help-card { top: 60px; right: 8px; left: 8px; width: auto; }
}
@media (max-width: 460px) {
  .wash-block { display: none; }
  .panel-power { gap: 8px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}