/* ============================================================
   MOONDROP — UI styles (game world is canvas-rendered).
   Soft cosmic pastels on deep space, glowing accents.
   ============================================================ */
:root{
  --lav:#a78bfa; --gold:#ffd166; --pink:#ff9df5;
  --txt:#f2eeff; --dim:#8f86b8;
  --panel:rgba(16,12,40,.92);
  --font:'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:#0a0a1f;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:26px;}
.hud-score{text-align:center;}
#score{font-size:40px;font-weight:800;line-height:1;color:#fff;
  text-shadow:0 0 18px rgba(167,139,250,.9),0 2px 8px rgba(0,0,0,.6);}
.hud-best{font-size:11px;font-weight:800;letter-spacing:2px;color:var(--dim);margin-top:3px;}
.hud-best span{color:var(--gold);}
.hud-next{display:flex;flex-direction:column;align-items:center;gap:4px;
  background:rgba(16,12,40,.6);border:1px solid rgba(167,139,250,.3);border-radius:14px;padding:7px 12px;}
.hud-next-label{font-size:9px;font-weight:800;letter-spacing:2px;color:var(--dim);}
#nextDot{display:block;border-radius:50%;box-shadow:0 0 10px currentColor;}

#comboBadge{position:absolute;top:calc(86px + env(safe-area-inset-top,0px));left:50%;transform:translateX(-50%);
  font-size:16px;font-weight:800;letter-spacing:2px;color:var(--gold);
  text-shadow:0 0 14px var(--gold);animation:comboPulse .5s infinite;}
@keyframes comboPulse{0%,100%{transform:translateX(-50%) scale(1);}50%{transform:translateX(-50%) scale(1.12);}}

#ladder{position:absolute;bottom:calc(10px + env(safe-area-inset-bottom,0px));left:50%;transform:translateX(-50%);
  display:flex;align-items:center;gap:6px;background:rgba(16,12,40,.6);
  border:1px solid rgba(167,139,250,.25);border-radius:16px;padding:7px 13px;}
.lad{width:13px;height:13px;border-radius:50%;background:var(--c);box-shadow:0 0 8px var(--c);}
.lad.locked{background:#2a2547;box-shadow:none;border:1px dashed rgba(255,255,255,.2);}

.bh-btn{position:absolute;bottom:calc(52px + env(safe-area-inset-bottom,0px));left:50%;transform:translateX(-50%);
  display:flex;flex-direction:column;align-items:center;padding:9px 20px;border-radius:14px;
  font-size:13px;font-weight:800;letter-spacing:1px;
  background:linear-gradient(180deg,#8b5cf6,#5b34c7);color:#fff;
  border:1px solid var(--pink);box-shadow:0 0 22px rgba(167,139,250,.5);animation:comboPulse 1.1s infinite;}
.bh-btn small{font-size:9px;font-weight:700;opacity:.85;}
.hud-corner{position:absolute;top:calc(10px + env(safe-area-inset-top,0px));right:12px;}

/* ================= OVERLAYS ================= */
.overlay{position:fixed;inset:0;z-index:10;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:16px;padding:20px;
  background:radial-gradient(ellipse at 50% 40%,rgba(10,10,31,.3),rgba(10,10,31,.82));}
/* menú título: esfera cósmica (imagen CC0 aportada por la fundadora) con
   velo radial para que el logo y los botones sigan legibles */
#title{background:
  radial-gradient(ellipse at 50% 42%,rgba(10,10,31,.28),rgba(10,10,31,.88) 78%),
  url("../assets/nebula.jpg") center/cover no-repeat #0a0a1f;}

.logo{font-size:min(16vw,74px);font-weight:800;letter-spacing:6px;color:#fff;line-height:1;
  text-shadow:0 0 30px var(--lav),0 0 70px rgba(167,139,250,.5);}
.logo span{color:var(--pink);text-shadow:0 0 30px var(--pink),0 0 70px rgba(255,157,245,.4);}
.tagline{font-size:14px;font-weight:700;color:var(--dim);letter-spacing:1px;}
.tagline b{color:var(--gold);}
.chain-demo{display:flex;align-items:center;gap:8px;color:var(--dim);font-weight:800;margin-top:4px;}
.chain-demo span:not(.bh-dot){display:inline-block;border-radius:50%;background:var(--c);box-shadow:0 0 10px var(--c);}
.bh-dot{font-size:26px;}
.menu-best{font-size:15px;font-weight:800;letter-spacing:2px;color:var(--dim);margin-top:8px;}
.menu-best b{color:#fff;font-size:21px;text-shadow:0 0 12px var(--lav);}
.tap-start{font-size:20px;font-weight:800;letter-spacing:4px;color:#fff;
  animation:blink 1.4s infinite;text-shadow:0 0 16px var(--lav);}
@keyframes blink{0%,100%{opacity:1;}50%{opacity:.35;}}

.panel{background:var(--panel);border:1px solid rgba(167,139,250,.35);border-radius:22px;
  padding:22px 24px;backdrop-filter:blur(8px);box-shadow:0 20px 60px rgba(0,0,0,.6);}
.over-panel{display:flex;flex-direction:column;align-items:center;gap:9px;width:min(92%,330px);
  text-align:center;animation:pop .3s cubic-bezier(.34,1.5,.64,1);}
@keyframes pop{from{transform:scale(.8);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;}
.over-label{font-size:11px;font-weight:800;letter-spacing:3px;color:var(--dim);}
.over-score{font-size:52px;font-weight:800;color:#fff;line-height:1;text-shadow:0 0 24px var(--lav);}
.over-stats{display:flex;gap:18px;font-size:12px;font-weight:700;color:var(--dim);margin-bottom:6px;}
.over-stats b{color:#fff;}

.big-btn{display:flex;flex-direction:column;align-items:center;width:100%;padding:12px;
  border-radius:14px;font-size:16px;font-weight:800;letter-spacing:1px;transition:transform .08s;}
.big-btn:active{transform:scale(.96);}
.big-btn small{font-size:10px;font-weight:700;opacity:.8;margin-top:1px;}
.big-btn.go{background:linear-gradient(180deg,#a78bfa,#7048e8);color:#fff;
  box-shadow:0 4px 0 #4c2fa8,0 0 22px rgba(167,139,250,.4);}
.big-btn.ad{background:linear-gradient(180deg,#ffd166,#e8a11c);color:#3d2800;
  box-shadow:0 4px 0 #a86e00,0 0 22px rgba(255,209,102,.3);}

.mini-btn{padding:9px 18px;border-radius:12px;font-size:13px;font-weight:800;letter-spacing:1px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);color:var(--txt);transition:transform .08s;}
.mini-btn:active{transform:scale(.94);}
.mini-btn.wide{width:100%;}

#shareToast{position:fixed;bottom:36px;left:50%;transform:translateX(-50%) translateY(20px);z-index:60;
  background:var(--panel);border:1px solid var(--lav);color:#fff;padding:10px 20px;border-radius:20px;
  font-size:13px;font-weight:700;opacity:0;transition:all .25s;pointer-events:none;}
#shareToast.show{opacity:1;transform:translateX(-50%) translateY(0);}

@media (min-width:900px){
  .mini-btn:hover,.big-btn:hover,.bh-btn:hover{filter:brightness(1.12);}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001s !important;}
}