/* ============================================================================
   Star Flyer — HUD + overlays. Neon arcade cockpit over a 3D scene.
   ========================================================================== */
:root{
  --bg:#0a1830; --ink:#dcecff; --dim:#8fb3da;
  --cyan:#46d0ff; --green:#7CFFB0; --amber:#ffd24a; --red:#ff5a4d;
  --glow:0 0 12px rgba(70,208,255,.6);
  --panel:rgba(8,22,46,.62); --edge:rgba(120,200,255,.35);
  --font:'Segoe UI',system-ui,-apple-system,Roboto,sans-serif;
  --mono:'SF Mono',ui-monospace,'Roboto Mono',Menlo,Consolas,monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden;background:var(--bg);color:var(--ink);font-family:var(--font)}
body{cursor:none;user-select:none;-webkit-user-select:none;touch-action:none}
#webgl{position:fixed;inset:0;width:100%;height:100%;display:block}

/* hit flash */
#hitflash{position:fixed;inset:0;pointer-events:none;background:radial-gradient(ellipse at center,transparent 40%,rgba(255,40,30,.0) 100%);opacity:0;z-index:20}
#hitflash.on{animation:hf .35s ease-out}
@keyframes hf{0%{opacity:1;background:radial-gradient(ellipse at center,rgba(255,60,40,.0) 30%,rgba(255,40,30,.5) 100%)}100%{opacity:0}}

/* ---- loading ---- */
#loading{position:fixed;inset:0;z-index:60;display:flex;flex-direction:column;align-items:center;justify-content:center;
  background:radial-gradient(ellipse at 50% 40%,#13315e,#070f22 70%);transition:opacity .5s}
#loading.hidden{opacity:0;pointer-events:none}
.ld-ring{width:64px;height:64px;border-radius:50%;border:4px solid rgba(70,208,255,.25);border-top-color:var(--cyan);animation:spin 1s linear infinite;margin-bottom:22px}
@keyframes spin{to{transform:rotate(360deg)}}
.ld-title{font-weight:800;letter-spacing:.22em;font-size:34px;text-shadow:var(--glow)}
.ld-sub{color:var(--dim);margin-top:10px;letter-spacing:.05em}
.ld-err{color:var(--red);margin-top:14px;max-width:80%;text-align:center;font-size:13px}

/* ============================== HUD ============================== */
#hud{position:fixed;inset:0;z-index:15;pointer-events:none}

/* reticles */
.reticle{position:absolute;left:50%;top:50%;width:54px;height:54px;transform:translate(-50%,-50%);
  transition:left .05s linear,top .05s linear;pointer-events:none}
.reticle::before,.reticle::after{content:'';position:absolute;inset:0;border-radius:50%}
.reticle::before{border:2px solid rgba(124,255,176,.85);box-shadow:0 0 10px rgba(124,255,176,.5),inset 0 0 8px rgba(124,255,176,.3)}
.reticle::after{inset:18px;border:2px solid rgba(124,255,176,.95);border-radius:1px;transform:rotate(45deg)}
.reticle.small{width:22px;height:22px;opacity:.7}
.reticle.small::after{display:none}
.reticle.lock::before{border-color:var(--red);box-shadow:0 0 14px rgba(255,90,77,.8),inset 0 0 8px rgba(255,90,77,.5);animation:lockpulse .25s linear infinite alternate}
.reticle.lock::after{border-color:var(--red)}
@keyframes lockpulse{to{transform:scale(1.12)}}

/* score */
#scorebox{position:absolute;left:22px;top:18px;font-family:var(--mono);text-shadow:0 1px 3px #000}
.sc-row{font-size:24px;font-weight:700;letter-spacing:.04em;display:flex;align-items:baseline;gap:8px}
.sc-row.hi{font-size:14px;color:var(--dim);margin-top:2px}
.sc-lbl{font-size:12px;color:var(--cyan);letter-spacing:.18em}
#score{color:#fff}
#combo{color:var(--amber);font-size:16px;opacity:0;transform:scale(.6);transition:.15s;text-shadow:0 0 8px rgba(255,210,74,.8)}
#combo.show{opacity:1;transform:scale(1)}

/* boss bar */
#boss{position:absolute;left:50%;top:16px;transform:translateX(-50%);width:min(60vw,560px);text-align:center;opacity:0;transition:opacity .4s}
#boss.show{opacity:1}
.boss-lbl{font-family:var(--mono);font-size:12px;letter-spacing:.22em;color:var(--red);margin-bottom:4px;text-shadow:0 0 8px rgba(255,90,77,.6)}
.boss-bar{height:12px;border:1px solid rgba(255,120,100,.6);border-radius:6px;background:rgba(40,8,8,.6);overflow:hidden;box-shadow:0 0 12px rgba(255,90,77,.3)}
#bossfill{height:100%;width:100%;background:linear-gradient(90deg,#ff5a4d,#ffae6a);transition:width .2s}

/* banner */
#banner{position:absolute;left:50%;top:34%;transform:translate(-50%,-50%);text-align:center;opacity:0;transition:opacity .3s,transform .3s;pointer-events:none}
#banner.show{opacity:1;animation:bnpop .4s ease-out}
@keyframes bnpop{0%{transform:translate(-50%,-50%) scale(.7)}100%{transform:translate(-50%,-50%) scale(1)}}
.bn-main{font-size:46px;font-weight:800;letter-spacing:.16em;color:#fff;text-shadow:0 0 18px rgba(70,208,255,.8),0 3px 8px #000}
.bn-sub{font-size:16px;color:var(--amber);letter-spacing:.16em;margin-top:6px}

/* radio callout */
#radio{position:absolute;left:22px;bottom:120px;max-width:min(60vw,420px);display:flex;align-items:center;gap:12px;
  background:var(--panel);border:1px solid var(--edge);border-left:3px solid var(--cyan);border-radius:10px;padding:10px 14px;
  opacity:0;transform:translateX(-12px);transition:.25s;backdrop-filter:blur(4px);box-shadow:0 6px 20px rgba(0,0,0,.4)}
#radio.show{opacity:1;transform:translateX(0)}
.rd-ava{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-weight:800;color:#05101f;flex:0 0 auto;box-shadow:0 0 10px rgba(70,208,255,.5)}
.rd-body{font-size:14px;line-height:1.3}
.rd-body b{display:block;font-size:11px;letter-spacing:.14em;margin-bottom:1px}

/* bottom gauges */
#gauges{position:absolute;left:22px;right:22px;bottom:20px;display:flex;align-items:flex-end;gap:18px;flex-wrap:wrap}
.gauge{flex:1 1 180px;min-width:140px;max-width:300px}
.gauge.boostg{margin-left:auto;flex:0 1 220px}
.gstack{flex:0 0 auto}
.g-lbl{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--cyan);margin-bottom:4px}
.bar{height:14px;border:1px solid var(--edge);border-radius:7px;background:rgba(6,16,34,.7);overflow:hidden;box-shadow:inset 0 0 8px rgba(0,0,0,.5)}
.bar>div{height:100%;transition:width .15s}
#shieldfill{width:100%;background:linear-gradient(90deg,#2fe08a,#7CFFB0)}
#boostfill{width:40%;background:linear-gradient(90deg,#46d0ff,#9be8ff)}
.icons{font-size:20px;letter-spacing:4px;line-height:1}
.ship-icon{color:var(--green);text-shadow:0 0 8px rgba(124,255,176,.7)}
.bomb-icon{color:var(--amber);text-shadow:0 0 8px rgba(255,210,74,.7)}
.bomb-empty{color:var(--dim)}

#mutehint{position:absolute;right:20px;top:18px;font-size:20px;opacity:0;transition:.2s}
body.muted #mutehint{opacity:.85}

/* ============================== Overlays ============================== */
.overlay{position:fixed;inset:0;z-index:40;display:none;align-items:center;justify-content:center;cursor:auto;
  background:radial-gradient(ellipse at 50% 35%,rgba(20,50,95,.72),rgba(5,12,28,.88));backdrop-filter:blur(3px)}
.overlay.show{display:flex;animation:fade .35s}
@keyframes fade{from{opacity:0}to{opacity:1}}
.ov-card{text-align:center;padding:30px 34px;max-width:560px}
.game-title{font-size:64px;font-weight:800;letter-spacing:.16em;color:#fff;
  text-shadow:0 0 24px rgba(70,208,255,.8),0 4px 10px #000;line-height:1}
.game-title.sm{font-size:42px}
.game-title.danger{color:#ffb0a8;text-shadow:0 0 24px rgba(255,90,77,.8)}
.game-title.win{color:#bfffd6;text-shadow:0 0 24px rgba(124,255,176,.8)}
.game-tag{color:var(--amber);letter-spacing:.18em;margin-top:8px;font-size:15px}
.btn{margin-top:22px;pointer-events:auto;cursor:pointer;font-family:var(--mono);font-weight:700;letter-spacing:.14em;
  font-size:18px;color:#05101f;background:linear-gradient(180deg,#7df0ff,#46d0ff);border:none;border-radius:10px;
  padding:14px 34px;box-shadow:0 0 22px rgba(70,208,255,.55),0 6px 16px rgba(0,0,0,.4);transition:.15s}
.btn:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(70,208,255,.85),0 10px 22px rgba(0,0,0,.5)}
.btn:active{transform:translateY(0)}
.controls{margin-top:26px;display:grid;grid-template-columns:repeat(2,1fr);gap:8px 24px;text-align:left;
  font-size:14px;color:var(--ink);max-width:380px;margin-left:auto;margin-right:auto}
.controls div{display:flex;align-items:center;gap:8px}
kbd{font-family:var(--mono);font-size:12px;background:rgba(70,208,255,.14);border:1px solid var(--edge);
  border-bottom-width:2px;border-radius:5px;padding:2px 7px;color:var(--cyan);min-width:20px;text-align:center}
.tip{margin-top:22px;color:var(--dim);font-size:13px;line-height:1.5}
.tip b{color:var(--green)}
.stats{margin:20px auto 4px;max-width:300px;font-family:var(--mono)}
.st-row{display:flex;justify-content:space-between;padding:7px 0;border-bottom:1px solid rgba(120,200,255,.15);font-size:15px}
.st-row b{color:var(--cyan)}

/* phone tweaks */
@media (max-width:680px){
  .game-title{font-size:44px}.game-title.sm{font-size:32px}
  #scorebox .sc-row{font-size:19px}
  #gauges{gap:10px;bottom:14px}.gauge{flex-basis:120px;min-width:100px}
  #radio{bottom:96px;max-width:78vw}
  .controls{grid-template-columns:1fr;max-width:220px}
}