*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0a0b0f;--bg2:#11131a;--card:#161922;--border:#232733;--border2:#2d3340;--text:#e8eaf0;--dim:#7a8190;--accent:#9b59b6;--hover:#b370d4;--green:#2ecc71;--red:#ff3b3b;--gold:#fdcb6e;--r:16px}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.7;overflow-x:hidden}
.navbar{display:flex;justify-content:space-between;align-items:center;padding:.75rem 2rem;border-bottom:1px solid var(--border);position:sticky;top:0;background:rgba(10,11,15,.92);backdrop-filter:blur(12px);z-index:50}
.navbar .brand{font-weight:800;color:var(--text);text-decoration:none;font-size:1.05rem;display:flex;align-items:center;gap:.4rem}
.navbar .nav-links{display:flex;gap:1rem}
.navbar .nav-links a{color:var(--dim);text-decoration:none;font-size:.82rem;transition:color .2s;min-height:44px;display:inline-flex;align-items:center}
.navbar .nav-links a:hover,.navbar .nav-links a.active{color:var(--hover)}
main{max-width:1000px;margin:0 auto;padding:2.5rem 2rem 3rem}
h1{font-size:2.2rem;margin-bottom:.4rem;background:linear-gradient(135deg,#9b59b6,#e84393,#f39c12);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.subtitle{color:var(--dim);font-size:1rem;margin-bottom:1.5rem}
h2{font-size:1.15rem;margin:1.5rem 0 .6rem;color:var(--hover)}
p{margin-bottom:.75rem}a{color:var(--hover)}

/* Controls */
.controls{background:var(--card);border:1px solid var(--border2);border-radius:var(--r);padding:1rem 1.5rem;margin-bottom:1.5rem;display:flex;gap:1rem;align-items:center;flex-wrap:wrap}
.control-group{display:flex;align-items:center;gap:.5rem}
.control-group label{font-size:.78rem;color:var(--dim);text-transform:uppercase;letter-spacing:.05em;font-weight:600}
.control-group select{background:var(--bg2);border:1px solid var(--border2);border-radius:8px;padding:.5rem .7rem;color:var(--text);font-size:.85rem;font-family:inherit;cursor:pointer}
.toggle{display:flex;align-items:center;gap:.4rem;cursor:pointer;font-size:.82rem;color:var(--dim)}
.toggle input{width:18px;height:18px;accent-color:var(--accent)}
.btn{background:linear-gradient(135deg,var(--accent),#8e44ad);color:#fff;border:none;border-radius:8px;padding:.5rem 1rem;font-size:.82rem;font-weight:600;cursor:pointer;font-family:inherit;min-height:38px;transition:transform .1s}
.btn:hover{box-shadow:0 4px 14px rgba(155,89,182,.4)}
.btn:active{transform:scale(.96)}
.btn-secondary{background:var(--bg2);border:1px solid var(--border2)}
.btn-rec{background:linear-gradient(135deg,var(--red),#c0392b)}
.btn-play{background:linear-gradient(135deg,var(--green),#27ae60)}

/* Piano */
.piano-wrap{background:var(--card);border:1px solid var(--border2);border-radius:var(--r);padding:1.5rem;margin-bottom:1.5rem;overflow-x:auto}
.piano{position:relative;display:flex;justify-content:center;min-width:600px;height:220px;background:linear-gradient(180deg,#1a1e28,#0d1117);border-radius:8px;padding:8px 8px 0}
.white-key{flex:1;max-width:60px;min-width:40px;height:100%;background:linear-gradient(180deg,#f5f5f5,#e0e0e0);border:1px solid #888;border-radius:0 0 6px 6px;cursor:pointer;position:relative;transition:all .05s;box-shadow:inset 0 -4px 6px rgba(0,0,0,.1);display:flex;flex-direction:column;justify-content:flex-end;align-items:center;padding-bottom:8px}
.white-key:hover{background:linear-gradient(180deg,#fff,#e8e8e8)}
.white-key.active{background:linear-gradient(180deg,#d4c5f9,#b370d4);box-shadow:inset 0 -4px 6px rgba(0,0,0,.2);transform:translateY(2px)}
.white-key .key-label{font-size:.65rem;color:#999;font-family:monospace}
.white-key .note-label{font-size:.6rem;color:#bbb;margin-top:2px}
.black-key{position:absolute;width:30px;height:60%;background:linear-gradient(180deg,#333,#000);border:1px solid #000;border-radius:0 0 4px 4px;cursor:pointer;z-index:2;transition:all .05s;box-shadow:0 2px 4px rgba(0,0,0,.3);display:flex;flex-direction:column;justify-content:flex-end;align-items:center;padding-bottom:4px}
.black-key:hover{background:linear-gradient(180deg,#444,#111)}
.black-key.active{background:linear-gradient(180deg,#8e44ad,#5c2d72);transform:translateY(2px)}
.black-key .key-label{font-size:.55rem;color:#666;font-family:monospace}

/* Now playing */
.now-playing{text-align:center;font-size:.85rem;color:var(--accent);min-height:1.5rem;margin-top:.75rem}

/* Song list */
.song-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.5rem;margin-top:.75rem}
.song-item{background:var(--bg2);border:1px solid var(--border2);border-radius:8px;padding:.6rem .8rem;cursor:pointer;transition:all .15s;font-size:.82rem;color:var(--dim)}
.song-item:hover{border-color:var(--accent);color:var(--text);background:var(--card)}
.song-item .song-title{font-weight:600;color:var(--text)}
.song-item .song-meta{font-size:.72rem;color:var(--dim);margin-top:2px}

.stats-footer{text-align:center;margin:1.5rem 0;font-size:.78rem;color:var(--dim)}
.stats-footer strong{color:var(--hover);font-variant-numeric:tabular-nums}
.stat-divider{margin:0 .6rem;opacity:.4}
footer{text-align:center;padding:1.5rem 2rem;color:var(--dim);font-size:.75rem;border-top:1px solid var(--border)}
footer a{color:var(--hover);text-decoration:none}
.seo-section{color:var(--dim);font-size:.88rem;margin-top:2.5rem;line-height:1.8}
.seo-section h2{color:var(--text)}

@keyframes fade{0%{opacity:0}100%{opacity:1}}

@media(max-width:760px){
  main{padding:2rem 1rem 3rem}
  h1{font-size:1.6rem}
  .navbar{padding:.75rem 1rem}
  .navbar .nav-links{gap:.6rem}
  .piano{min-width:500px;height:180px}
  .controls{padding:.75rem 1rem;gap:.5rem}
}