@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;700&display=swap";:root{--font-family:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--bg-gradient:linear-gradient(135deg, #0d1117 0%, #161b22 100%);--glass-bg:#ffffff0a;--glass-border:#ffffff14;--accent-cyan:#00f2fe;--accent-indigo:#4facfe;--accent-magenta:#f857a6;--accent-orange:#ff5858;--text-primary:#fff;--text-secondary:#8b949e}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background:var(--bg-gradient);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;line-height:1.5}#root{flex-direction:column;min-height:100vh;display:flex}.glass-panel{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);border-radius:16px;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 8px 32px #0000005e}.glass-panel:hover{border-color:#ffffff26;box-shadow:0 8px 32px #00000080}.btn-primary{background:linear-gradient(135deg, var(--accent-indigo) 0%, var(--accent-cyan) 100%);color:#0b0f19;cursor:pointer;border:none;border-radius:12px;align-items:center;gap:8px;padding:10px 24px;font-weight:600;transition:all .2s;display:inline-flex;box-shadow:0 4px 15px #4facfe4d}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #00f2fe80}.btn-primary:active{transform:translateY(0)}.btn-secondary{color:#fff;border:1px solid var(--glass-border);cursor:pointer;background:#ffffff0d;border-radius:12px;align-items:center;gap:8px;padding:10px 24px;font-weight:500;transition:all .2s;display:inline-flex}.btn-secondary:hover{background:#ffffff1a;border-color:#ffffff4d}.btn-accent{background:linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-magenta) 100%);color:#fff;cursor:pointer;border:none;border-radius:12px;align-items:center;gap:8px;padding:10px 24px;font-weight:600;transition:all .2s;display:inline-flex;box-shadow:0 4px 15px #f857a64d}.btn-accent:hover{transform:translateY(-2px);box-shadow:0 6px 20px #f857a680}h1,h2,h3,h4,h5{letter-spacing:-.025em;font-weight:700}.text-gradient{background:linear-gradient(135deg, var(--accent-indigo) 0%, var(--accent-cyan) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.text-gradient-accent{background:linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-magenta) 100%);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.app-container{flex-direction:column;gap:16px;width:100%;max-width:1200px;min-height:100vh;margin:0 auto;padding:16px;display:flex}.app-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding-bottom:8px;display:flex}.logo-section{align-items:center;gap:12px;display:flex}.logo-icon{background:linear-gradient(135deg, var(--accent-indigo) 0%, var(--accent-cyan) 100%);color:#0d1117;border-radius:12px;justify-content:center;align-items:center;width:44px;height:44px;display:flex;box-shadow:0 4px 12px #00f2fe66}.nav-buttons{gap:12px;display:flex}.nav-tab{color:var(--text-secondary);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:12px;align-items:center;gap:8px;padding:10px 20px;font-weight:600;transition:all .3s;display:flex}.nav-tab:hover{color:#fff;background:#ffffff0a}.nav-tab.active{color:#fff;background:var(--glass-bg);border-color:#ffffff1a;box-shadow:0 4px 15px #0003}.piano-section{flex-direction:column;gap:20px;padding:24px;display:flex}.piano-controls{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.control-group{border:1px solid var(--glass-border);background:#ffffff08;border-radius:12px;align-items:center;gap:12px;padding:8px 16px;display:flex}.control-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;font-size:.85rem;font-weight:600}.custom-select{color:#fff;cursor:pointer;background:#1c2128;border:1px solid #ffffff1a;border-radius:8px;outline:none;padding:6px 12px;font-family:inherit;font-size:.9rem}.custom-select:focus{border-color:var(--accent-cyan)}.custom-slider{-webkit-appearance:none;background:#ffffff1a;border-radius:3px;outline:none;width:120px;height:6px}.custom-slider::-webkit-slider-thumb{-webkit-appearance:none;background:var(--accent-cyan);cursor:pointer;width:14px;height:14px;box-shadow:0 0 10px var(--accent-cyan);border-radius:50%}.piano-keyboard-wrapper{border:1px solid var(--glass-border);-webkit-user-select:none;user-select:none;background:#0003;border-radius:12px;width:100%;height:280px;padding:8px;display:flex;position:relative;overflow-x:auto}.white-key{cursor:pointer;color:#1f2937;background:linear-gradient(#fff 0%,#e0e6ed 100%);border:1px solid #c8cfd6;border-radius:0 0 8px 8px;flex-direction:column;flex:1 0 6.66667%;justify-content:flex-end;align-items:center;min-width:50px;height:100%;padding-bottom:12px;font-size:.85rem;font-weight:700;transition:all 80ms;display:flex;position:relative;box-shadow:0 4px 10px #00000026}.white-key:active,.white-key.active{border-bottom-color:var(--accent-cyan);color:#111827;background:linear-gradient(#f0f2f5 0%,#00f2fe 100%);transform:translateY(2px);box-shadow:0 0 15px #00f2fe66}.black-key{z-index:10;cursor:pointer;color:#cbd5e0;background:linear-gradient(#2d3748 0%,#1a202c 100%);border:1px solid #ffffff0d;border-radius:0 0 6px 6px;flex-direction:column;justify-content:flex-end;align-items:center;width:4.13333%;min-width:32px;height:60%;padding-bottom:8px;font-size:.75rem;transition:all 80ms;display:flex;position:absolute;box-shadow:0 4px 8px #0006}.black-key:active,.black-key.active{border-bottom-color:var(--accent-magenta);color:#fff;background:linear-gradient(#111 0%,#f857a6 100%);transform:translateY(2px);box-shadow:0 0 15px #f857a680}.maestro-panel{flex-direction:column;gap:12px;padding:12px;display:flex}.song-list{border:1px solid var(--glass-border);background:#00000026;border-radius:12px;flex-direction:column;gap:12px;max-height:480px;padding:16px;display:flex;overflow-y:auto}.song-list::-webkit-scrollbar{width:6px}.song-list::-webkit-scrollbar-thumb{background:var(--glass-border);border-radius:4px}.song-card{cursor:pointer;background:#ffffff05;border:1px solid #0000;border-radius:10px;justify-content:space-between;align-items:center;padding:12px 16px;transition:all .2s;display:flex}.song-card:hover,.song-card.active{border-color:var(--glass-border);background:#ffffff0d}.song-card.active{background:#4facfe14;border-color:#4facfe4d}.song-card.active .song-name{color:var(--accent-cyan)}.song-name{color:#fff;font-size:.95rem;font-weight:600}.song-diff{color:var(--text-secondary);background:#ffffff0f;border-radius:20px;padding:2px 8px;font-size:.75rem}.visualizer-wrapper{border:1px solid var(--glass-border);background:#00000040;border-radius:12px;flex-direction:column;height:320px;display:flex;position:relative;overflow:hidden}.visualizer-header{border-bottom:1px solid var(--glass-border);background:#0000001a;justify-content:space-between;align-items:center;padding:12px 16px;display:flex}.falling-notes-area{background:linear-gradient(#0000,#0000004d);flex:1;width:100%;position:relative}.falling-note{background:linear-gradient(to bottom, var(--accent-cyan), var(--accent-indigo));opacity:.85;border-radius:4px;width:calc(6.66667% - 4px);animation:1.5s linear forwards fall;position:absolute;box-shadow:0 0 15px #00f2fe66}.falling-note.hit{background:linear-gradient(to bottom, var(--accent-orange), var(--accent-magenta));box-shadow:0 0 15px #f857a699}.feedback-score{gap:20px;font-size:1.2rem;font-weight:700;display:flex}.app-footer{text-align:center;color:var(--text-secondary);border-top:1px solid var(--glass-border);margin-top:auto;padding:16px 0;font-size:.85rem}