:root{
  --bg:#0a0e17;
  --panel:#10182b;
  --cyan:#00e5ff;
  --magenta:#ff2fb0;
  --amber:#ffcc33;
  --ink:#eef2f8;
  --muted:#7d8aa8;
  --danger:#ff4d5e;
  color-scheme: dark;
}

*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  background:
    radial-gradient(1200px 800px at 15% -10%, rgba(0,229,255,.08), transparent 60%),
    radial-gradient(1000px 700px at 110% 10%, rgba(255,47,176,.10), transparent 55%),
    var(--bg);
  color:var(--ink);
  font-family:'Rajdhani',sans-serif;
  min-height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:env(safe-area-inset-top,0px) 12px env(safe-area-inset-bottom,0px);
  overflow-x:hidden;
}

#app{
  width:100%;
  max-width:960px;
  margin:24px auto;
}

.screen{ animation: fadein .25s ease; }
.hidden{ display:none !important; }
@keyframes fadein{ from{opacity:0; transform:translateY(6px);} to{opacity:1; transform:none;} }

h1,h2{ font-weight:700; letter-spacing:.02em; margin:0; }
h1{ font-size:clamp(2.4rem,7vw,3.6rem); }
h2{ font-size:1.5rem; }
p{ margin:.4em 0; }
.muted{ color:var(--muted); font-size:.9rem; }

/* ---- Menu ---- */
.brandblock{ text-align:center; padding:28px 0 12px; }
.brand-icon svg{ width:56px; height:56px; filter:drop-shadow(0 0 14px rgba(0,229,255,.5)); }
.tagline{ color:var(--muted); font-family:'Space Mono',monospace; font-size:.85rem; }

.menu-actions{ display:flex; flex-direction:column; gap:12px; max-width:320px; margin:20px auto; }

.btn{
  font-family:'Rajdhani',sans-serif;
  font-size:1.05rem;
  font-weight:600;
  letter-spacing:.03em;
  color:var(--ink);
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:4px;
  padding:14px 20px;
  cursor:pointer;
  transition:transform .12s ease, border-color .12s ease, background .12s ease;
  clip-path:polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px);
}
.btn:hover{ border-color:rgba(0,229,255,.4); transform:translateY(-1px); }
.btn:active{ transform:translateY(0); }
.btn-primary{
  background:linear-gradient(135deg, var(--cyan), #0092ff);
  color:#03121a;
  border:none;
  font-weight:700;
}
.btn-primary:hover{ box-shadow:0 0 22px rgba(0,229,255,.45); }

.btn-back{
  background:transparent;
  border:1px solid rgba(255,255,255,.14);
  color:var(--ink);
  width:40px; height:40px;
  border-radius:50%;
  font-size:1.2rem;
  cursor:pointer;
  flex:none;
}

.player-tag,.music-slot{
  max-width:320px; margin:16px auto; text-align:left;
}
.player-tag label,.music-slot label{
  display:block; font-size:.8rem; color:var(--muted); margin-bottom:6px;
}
#player-name{
  width:100%; padding:10px 12px; border-radius:4px; border:1px solid rgba(255,255,255,.12);
  background:var(--panel); color:var(--ink); font-family:'Rajdhani',sans-serif; font-size:1rem;
}
#player-name:focus{ outline:2px solid var(--cyan); outline-offset:1px; }
.music-slot{ font-size:.85rem; }
#music-file{ color:var(--muted); font-size:.82rem; width:100%; }
#music-file-name{ display:block; margin-top:4px; }

/* ---- Level select ---- */
.select-head{ display:flex; align-items:center; gap:14px; margin-bottom:18px; }
.level-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px;
}
.level-card{
  background:var(--panel);
  border:1px solid rgba(255,255,255,.08);
  border-radius:4px;
  padding:18px;
  cursor:pointer;
  position:relative;
  overflow:hidden;
  transition:transform .12s ease, border-color .12s ease;
}
.level-card:hover{ transform:translateY(-2px); border-color:rgba(0,229,255,.35); }
.level-card .swatch{
  position:absolute; inset:0; opacity:.5; z-index:0;
}
.level-card > *{ position:relative; z-index:1; }
.level-card h3{ margin:0 0 4px; font-size:1.2rem; }
.level-diff{
  display:inline-block; font-family:'Space Mono',monospace; font-size:.72rem;
  padding:2px 8px; border-radius:2px; margin-bottom:10px;
}
.diff-Easy{ background:rgba(80,220,140,.18); color:#6ee7a7; }
.diff-Normal{ background:rgba(0,229,255,.18); color:var(--cyan); }
.diff-Hard{ background:rgba(255,204,51,.18); color:var(--amber); }
.diff-Insane{ background:rgba(255,77,94,.18); color:var(--danger); }
.level-best{ font-size:.85rem; color:var(--muted); font-family:'Space Mono',monospace; }

/* ---- Game screen ---- */
#screen-game{ display:flex; flex-direction:column; align-items:center; gap:10px; }
#hud{
  width:100%; max-width:900px; display:flex; align-items:center; gap:14px;
}
.hud-mid{ flex:1; display:flex; align-items:center; gap:10px; }
#progress-track{
  flex:1; height:8px; background:rgba(255,255,255,.08); border-radius:4px; overflow:hidden;
}
#progress-fill{
  height:100%; width:0%; background:linear-gradient(90deg,var(--cyan),var(--magenta));
}
#percent-label,#attempt-label{ font-family:'Space Mono',monospace; font-size:.85rem; color:var(--muted); white-space:nowrap; }

#game{
  width:100%; max-width:900px; aspect-ratio:900/540; height:auto;
  background:#0a0e17; border-radius:6px; border:1px solid rgba(255,255,255,.08);
  touch-action:none; display:block;
}
#tap-hint{ font-family:'Space Mono',monospace; }

/* ---- Overlays ---- */
.overlay{
  position:fixed; inset:0; background:rgba(5,7,12,.82);
  display:flex; align-items:center; justify-content:center; z-index:50;
  backdrop-filter:blur(3px);
}
.overlay-card{
  background:var(--panel); border:1px solid rgba(255,255,255,.1); border-radius:6px;
  padding:32px 36px; text-align:center; min-width:260px;
}
.big-stat{
  font-family:'Space Mono',monospace; font-size:2.4rem; margin:8px 0;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));
  -webkit-background-clip:text; background-clip:text; color:transparent;
}
.overlay-actions{ display:flex; gap:10px; margin-top:18px; justify-content:center; flex-wrap:wrap; }

/* ---- Leaderboard ---- */
.lb-tabs{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:14px; }
.lb-tab{
  font-family:'Space Mono',monospace; font-size:.8rem; padding:6px 12px; border-radius:3px;
  background:var(--panel); border:1px solid rgba(255,255,255,.08); cursor:pointer; color:var(--muted);
}
.lb-tab.active{ color:var(--cyan); border-color:rgba(0,229,255,.4); }
table{ width:100%; border-collapse:collapse; font-family:'Space Mono',monospace; font-size:.9rem; }
th,td{ text-align:left; padding:8px 10px; border-bottom:1px solid rgba(255,255,255,.06); }
th{ color:var(--muted); font-weight:600; font-size:.75rem; }
tr:first-child td{ color:var(--amber); }

@media (max-width:520px){
  .overlay-card{ padding:24px 20px; }
}