/* Rajdhani vendorizada (autocontenida, sin CDN): la tipografía display
   del estudio — 'Segoe UI' delataba "juego barato" (auditoría). */
@font-face{font-family:'Rajdhani';src:url('../assets/fonts/rajdhani-600.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap;}
@font-face{font-family:'Rajdhani';src:url('../assets/fonts/rajdhani-700.woff2') format('woff2');font-weight:700;font-style:normal;font-display:swap;}
/* ============================================================
   MERGE FORGE — UI styles (board is canvas-rendered).
   Warm forge darks, ember orange, molten gold accents.
   ============================================================ */
:root{
  --ember:#ff9d4d; --gold:#f5c542; --good:#50e678;
  --txt:#f7efe4; --dim:#a08d76;
  --panel:rgba(23,16,11,.94);
  --font:'Rajdhani','Segoe UI', system-ui, -apple-system, sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent;user-select:none;}
html,body{height:100%;overflow:hidden;background:#17120e;font-family:var(--font);color:var(--txt);}
canvas{position:fixed;inset:0;display:block;touch-action:none;}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit;}
.hidden{display:none !important;}

/* ================= HUD ================= */
#hud{position:fixed;inset:0;pointer-events:none;z-index:5;}
#hud button{pointer-events:auto;}
.hud-top{position:absolute;top:calc(10px + env(safe-area-inset-top,0px));left:0;right:0;
  display:flex;justify-content:center;align-items:flex-start;gap:18px;}
.hud-score{text-align:center;}
#score{font-size:40px;font-weight:800;line-height:1;color:#fff;
  text-shadow:0 0 18px rgba(255,157,77,.7),0 2px 8px rgba(0,0,0,.6);}
#best{font-size:10.5px;font-weight:800;letter-spacing:2px;color:var(--dim);margin-top:3px;}
.chip{margin-top:8px;background:rgba(15,10,6,.8);border:1px solid rgba(255,157,77,.25);
  border-radius:12px;padding:7px 13px;font-size:13px;font-weight:800;}

.hud-corner{position:absolute;top:calc(10px + env(safe-area-inset-top,0px));right:10px;
  display:flex;flex-direction:column;gap:6px;}
.mini-btn{width:36px;height:36px;border-radius:10px;font-size:15px;font-weight:800;
  background:rgba(15,10,6,.8);border:1px solid rgba(255,157,77,.25);
  display:flex;align-items:center;justify-content:center;}
.mini-btn:active{transform:scale(.92);}

.boosters{position:absolute;bottom:calc(8px + env(safe-area-inset-bottom,0px));left:50%;
  transform:translateX(-50%);display:flex;gap:12px;}
.boost-btn{display:flex;flex-direction:column;align-items:center;padding:7px 16px;border-radius:13px;
  font-size:12px;font-weight:800;letter-spacing:.5px;
  background:linear-gradient(180deg,#f5c542,#d8901c);color:#3d2400;
  box-shadow:0 3px 0 #9c6300,0 6px 14px rgba(0,0,0,.4);transition:transform .08s;}
.boost-btn:active{transform:translateY(2px);}
.boost-btn small{font-size:8.5px;font-weight:700;opacity:.8;}
.boost-btn.armed{background:linear-gradient(180deg,#ff7a5c,#d84315);color:#fff;
  box-shadow:0 3px 0 #93290a,0 0 18px rgba(255,122,92,.5);animation:pulse .8s infinite;}
@keyframes pulse{0%,100%{transform:scale(1);}50%{transform:scale(1.05);}}

/* ================= GAME OVER ================= */
.overlay{position:fixed;inset:0;z-index:50;background:rgba(10,6,3,.82);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;padding:24px;}
.modal{background:linear-gradient(180deg,#2a1d13,#1a120b);border:1px solid rgba(255,157,77,.45);
  border-radius:20px;padding:24px 22px;max-width:330px;width:100%;text-align:center;
  box-shadow:0 24px 60px rgba(0,0,0,.7);animation:pop .3s cubic-bezier(.34,1.5,.64,1);}
@keyframes pop{from{transform:scale(.85);opacity:0;}to{transform:scale(1);opacity:1;}}
.new-best{font-size:15px;font-weight:800;letter-spacing:3px;color:var(--gold);
  text-shadow:0 0 14px var(--gold);animation:blink 1s infinite;}
@keyframes blink{0%,100%{opacity:1;}50%{opacity:.35;}}
.ov-label{font-size:11px;font-weight:800;letter-spacing:3px;color:var(--dim);}
.ov-score{font-size:52px;font-weight:800;color:#fff;line-height:1.1;
  text-shadow:0 0 24px rgba(255,157,77,.8);}
.ov-stats{display:flex;gap:18px;justify-content:center;font-size:12px;font-weight:700;
  color:var(--dim);margin:6px 0 8px;}
.ov-stats b{color:#fff;}
.m-btn{display:flex;flex-direction:column;align-items:center;width:100%;padding:12px;border-radius:13px;
  font-weight:800;font-size:15px;margin-top:9px;background:#33261a;color:#d8c9b4;
  box-shadow:0 3px 0 #1c130b;transition:transform .08s;}
.m-btn:active{transform:translateY(2px);}
.m-btn small{font-size:9.5px;font-weight:700;opacity:.8;}
.m-btn.go{background:linear-gradient(180deg,#50e678,#22a555);color:#052914;box-shadow:0 3px 0 #157a3c;}
.m-btn.ad{background:linear-gradient(180deg,#f5c542,#d8901c);color:#3d2400;box-shadow:0 3px 0 #9c6300;}

@media (min-width:900px){
  .mini-btn:hover,.boost-btn:hover,.m-btn:hover{filter:brightness(1.1);}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001s !important;}
}