:root{--bg-primary:#0d0d0d;--bg-secondary:#1a1a1a;--bg-tertiary:#252525;--bg-elevated:#2d2d2d;--accent:#4a7c59;--accent-dim:#3a5c45;--accent-bright:#5a9c6a;--accent-glow:#4a7c594d;--text-primary:#e8e8e8;--text-secondary:#a0a0a0;--text-dim:#666;--border-color:#333;--border-subtle:#2a2a2a;--shadow-sm:0 2px 4px #0000004d;--shadow-md:0 4px 12px #0006;--shadow-lg:0 8px 24px #00000080;--shadow-inset:inset 0 2px 4px #0006;--step-off:#1f1f1f;--step-on:var(--accent);--step-current:var(--accent-bright);--font-mono:"SF Mono", "Monaco", "Inconsolata", "Roboto Mono", monospace;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:32px;--transition-fast:.1s ease;--transition-normal:.2s ease;--transition-slow:.3s ease;--knob-size:64px;--knob-size-sm:48px;--slider-track-height:6px;--slider-thumb-size:18px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-tap-highlight-color:transparent;font-size:16px}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100dvh;overflow-x:hidden}#app{max-width:600px;min-height:100dvh;padding:var(--space-md);padding-bottom:calc(var(--space-md) + env(safe-area-inset-bottom));flex-direction:column;margin:0 auto;display:flex}.header{padding:var(--space-sm) 0;margin-bottom:var(--space-md);border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;display:flex}.logo{flex-direction:column;display:flex}.logo-text{font-family:var(--font-mono);letter-spacing:.1em;color:var(--accent);text-shadow:0 0 20px var(--accent-glow);font-size:1.5rem;font-weight:700}.logo-subtitle{font-family:var(--font-mono);letter-spacing:.2em;color:var(--text-dim);text-transform:uppercase;font-size:.65rem}.info-toggle{background:var(--bg-tertiary);border:1px solid var(--border-color);width:40px;height:40px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-normal);border-radius:8px;justify-content:center;align-items:center;display:flex}.info-toggle:hover,.info-toggle.active{background:var(--accent-dim);color:var(--text-primary);border-color:var(--accent)}.sound-selector{gap:var(--space-xs);margin-bottom:var(--space-md);scrollbar-width:none;-ms-overflow-style:none;display:flex;overflow-x:auto}.sound-selector::-webkit-scrollbar{display:none}.sound-tab{min-width:50px;padding:var(--space-sm) var(--space-md);font-family:var(--font-mono);letter-spacing:.05em;text-transform:uppercase;background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-normal);white-space:nowrap;border-radius:6px;flex:1;font-size:.75rem;font-weight:600}.sound-tab:hover{background:var(--bg-elevated);color:var(--text-primary)}.sound-tab.active{background:var(--accent-dim);border-color:var(--accent);color:var(--text-primary);box-shadow:0 0 12px var(--accent-glow)}.visualizer-section{gap:var(--space-sm);margin-bottom:var(--space-sm);z-index:10;background:var(--bg-primary);padding:var(--space-sm) 0;grid-template-columns:1fr 1fr;display:grid;position:sticky;top:0}.waveform-display,.envelope-display{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;width:100%;height:60px}.controls-section{gap:var(--space-md);margin-bottom:var(--space-lg);flex-direction:column;display:flex}.control-group{background:var(--bg-secondary);border:1px solid var(--border-color);padding:var(--space-md);border-radius:12px}.control-group-header{margin-bottom:var(--space-md);padding-bottom:var(--space-sm);border-bottom:1px solid var(--border-subtle);justify-content:space-between;align-items:center;display:flex}.control-group-title{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent);font-size:.7rem;font-weight:600}.control-group-info{border:1px solid var(--border-color);width:24px;height:24px;color:var(--text-dim);cursor:pointer;transition:all var(--transition-normal);background:0 0;border-radius:50%;justify-content:center;align-items:center;font-size:.75rem;display:flex}.control-group-info:hover{background:var(--accent-dim);border-color:var(--accent);color:var(--text-primary)}.control-row{gap:var(--space-md);flex-wrap:wrap;justify-content:space-around;display:flex}.knob-container{align-items:center;gap:var(--space-xs);flex-direction:column;display:flex}.knob-wrapper{width:var(--knob-size);height:var(--knob-size);position:relative}.knob-canvas{cursor:grab;touch-action:none;width:100%;height:100%}.knob-canvas:active{cursor:grabbing}.knob-label{font-family:var(--font-mono);letter-spacing:.05em;text-transform:uppercase;color:var(--text-secondary);text-align:center;font-size:.65rem}.knob-value{font-family:var(--font-mono);color:var(--accent);text-align:center;min-width:50px;font-size:.7rem}.knob-info{background:var(--bg-tertiary);border:1px solid var(--border-color);width:18px;height:18px;color:var(--text-dim);cursor:pointer;transition:all var(--transition-normal);z-index:1;border-radius:50%;justify-content:center;align-items:center;font-size:.6rem;display:flex;position:absolute;top:-4px;right:-4px}.knob-info:hover{background:var(--accent-dim);border-color:var(--accent);color:var(--text-primary)}.knob-container.small .knob-wrapper{width:var(--knob-size-sm);height:var(--knob-size-sm)}.slider-container{gap:var(--space-xs);flex-direction:column;flex:1;min-width:100px;display:flex}.slider-header{justify-content:space-between;align-items:center;display:flex}.slider-label{font-family:var(--font-mono);letter-spacing:.05em;text-transform:uppercase;color:var(--text-secondary);font-size:.65rem}.slider-value{font-family:var(--font-mono);color:var(--accent);font-size:.7rem}.slider-info{border:1px solid var(--border-color);width:18px;height:18px;color:var(--text-dim);cursor:pointer;transition:all var(--transition-normal);margin-left:var(--space-xs);background:0 0;border-radius:50%;justify-content:center;align-items:center;font-size:.6rem;display:flex}.slider-info:hover{background:var(--accent-dim);border-color:var(--accent);color:var(--text-primary)}.slider-track{height:var(--slider-track-height);background:var(--bg-tertiary);border-radius:3px;position:relative;overflow:visible}.slider-fill{background:linear-gradient(90deg, var(--accent-dim), var(--accent));height:100%;transition:width var(--transition-fast);border-radius:3px;position:absolute;top:0;left:0}.slider-thumb{width:var(--slider-thumb-size);height:var(--slider-thumb-size);background:var(--text-primary);border:2px solid var(--accent);cursor:grab;touch-action:none;transition:transform var(--transition-fast), box-shadow var(--transition-fast);border-radius:50%;position:absolute;top:50%;transform:translate(-50%,-50%)}.slider-thumb:hover{box-shadow:0 0 8px var(--accent-glow);transform:translate(-50%,-50%)scale(1.1)}.slider-thumb:active{cursor:grabbing;transform:translate(-50%,-50%)scale(1.15)}.play-section{justify-content:center;align-items:center;gap:var(--space-lg);margin-bottom:var(--space-md);z-index:9;background:var(--bg-primary);padding:var(--space-sm) 0;display:flex;position:sticky;top:76px}.play-button{background:linear-gradient(145deg, var(--accent), var(--accent-dim));width:72px;height:72px;color:var(--text-primary);cursor:pointer;box-shadow:var(--shadow-md), 0 0 20px var(--accent-glow);transition:all var(--transition-normal);border:none;border-radius:50%;justify-content:center;align-items:center;display:flex}.play-button:hover{box-shadow:var(--shadow-lg), 0 0 30px var(--accent-glow);transform:scale(1.05)}.play-button:active{box-shadow:var(--shadow-sm);transform:scale(.95)}.play-button svg{margin-left:4px}.preset-controls{align-items:center;gap:var(--space-sm);display:flex}.preset-select{padding:var(--space-sm) var(--space-md);font-family:var(--font-mono);background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;border-radius:6px;min-width:120px;font-size:.75rem}.preset-select:focus{border-color:var(--accent);outline:none}.preset-btn{background:var(--bg-tertiary);border:1px solid var(--border-color);width:36px;height:36px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-normal);border-radius:6px;justify-content:center;align-items:center;display:flex}.preset-btn:hover{background:var(--accent-dim);border-color:var(--accent);color:var(--text-primary)}.sequencer-section{background:var(--bg-secondary);border:1px solid var(--border-color);padding:var(--space-md);border-radius:12px}.sequencer-header{margin-bottom:var(--space-md);justify-content:space-between;align-items:center;display:flex}.sequencer-title{font-family:var(--font-mono);letter-spacing:.1em;color:var(--accent);font-size:.7rem;font-weight:600}.sequencer-controls{align-items:center;gap:var(--space-sm);display:flex}.tempo-control{align-items:center;gap:var(--space-xs);font-family:var(--font-mono);color:var(--text-secondary);font-size:.7rem;display:flex}.tempo-control input{width:50px;padding:var(--space-xs);font-family:var(--font-mono);background:var(--bg-tertiary);border:1px solid var(--border-color);color:var(--text-primary);text-align:center;border-radius:4px;font-size:.75rem}.tempo-control input:focus{border-color:var(--accent);outline:none}.seq-btn{background:var(--bg-tertiary);border:1px solid var(--border-color);width:32px;height:32px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-normal);border-radius:6px;justify-content:center;align-items:center;display:flex}.seq-btn:hover{background:var(--accent-dim);border-color:var(--accent);color:var(--text-primary)}.seq-btn.active{background:var(--accent);border-color:var(--accent-bright);color:var(--text-primary)}.sequencer-grid{gap:var(--space-xs);flex-direction:column;display:flex}.seq-row{align-items:center;gap:var(--space-xs);display:flex}.seq-row-label{width:40px;font-family:var(--font-mono);letter-spacing:.05em;color:var(--text-dim);text-align:right;padding-right:var(--space-xs);flex-shrink:0;font-size:.6rem}.seq-steps{flex:1;gap:2px;display:flex}.seq-step{aspect-ratio:1;background:var(--step-off);border:1px solid var(--border-subtle);cursor:pointer;max-width:28px;transition:all var(--transition-fast);border-radius:4px;flex:1}.seq-step:nth-child(4n+1){border-left:2px solid var(--border-color)}.seq-step:hover{background:var(--bg-elevated);border-color:var(--accent-dim)}.seq-step.active{background:var(--step-on);border-color:var(--accent);box-shadow:0 0 6px var(--accent-glow)}.seq-step.current{box-shadow:inset 0 0 0 2px var(--accent-bright)}.info-panel{background:var(--bg-secondary);border-top:1px solid var(--accent);max-height:50vh;transition:transform var(--transition-slow);z-index:100;border-radius:16px 16px 0 0;position:fixed;bottom:0;left:0;right:0;overflow:hidden;transform:translateY(100%)}.info-panel.open{transform:translateY(0)}.info-panel-header{padding:var(--space-md);border-bottom:1px solid var(--border-color);background:var(--bg-tertiary);justify-content:space-between;align-items:center;display:flex}.info-panel-header h3{font-family:var(--font-mono);letter-spacing:.05em;color:var(--accent);font-size:.85rem;font-weight:600}.info-panel-close{width:32px;height:32px;color:var(--text-secondary);cursor:pointer;transition:color var(--transition-normal);background:0 0;border:none;justify-content:center;align-items:center;font-size:1.5rem;display:flex}.info-panel-close:hover{color:var(--text-primary)}.info-panel-content{padding:var(--space-md);max-height:calc(50vh - 60px);overflow-y:auto}.info-panel-content p{color:var(--text-secondary);margin-bottom:var(--space-md);line-height:1.6}.info-panel-content p:last-child{margin-bottom:0}.info-panel-content strong{color:var(--text-primary)}.info-panel-content code{font-family:var(--font-mono);background:var(--bg-tertiary);color:var(--accent);border-radius:4px;padding:2px 6px;font-size:.85em}.info-icon-inline{background:var(--accent-dim);width:18px;height:18px;color:var(--text-primary);vertical-align:middle;border-radius:50%;justify-content:center;align-items:center;font-size:.7rem;font-style:normal;display:inline-flex}.toast{padding:var(--space-sm) var(--space-md);background:var(--bg-elevated);border:1px solid var(--accent);font-family:var(--font-mono);color:var(--text-primary);opacity:0;transition:all var(--transition-normal);z-index:200;pointer-events:none;border-radius:8px;font-size:.8rem;position:fixed;bottom:20px;left:50%;transform:translate(-50%)translateY(100px)}.toast.show{opacity:1;transform:translate(-50%)translateY(0)}@media (width<=380px){:root{--knob-size:56px;--knob-size-sm:42px}.sound-tab{padding:var(--space-xs) var(--space-sm);font-size:.65rem}.visualizer-section{grid-template-columns:1fr}.seq-step{max-width:20px}.seq-row-label{width:32px;font-size:.55rem}}@media (width>=480px){#app{padding:var(--space-lg)}.visualizer-section,.waveform-display,.envelope-display{height:100px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}.visually-hidden{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button:focus:not(:focus-visible){outline:none}