:root{--primary: #135bec;--primary-glow: rgba(19, 91, 236, .4);--bg-dark: #0f172a;--bg-card: rgba(30, 41, 59, .5);--border-color: rgba(51, 65, 85, .5);--text-main: #f8fafc;--text-muted: #94a3b8;--font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"}.icon{width:24px;height:24px;fill:currentColor;display:inline-block;vertical-align:middle}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);color:var(--text-main);font-family:var(--font-display);min-height:100vh;-webkit-font-smoothing:antialiased}.app-container{max-width:1000px;margin:0 auto;padding:1rem;display:flex;flex-direction:column;align-items:center;min-height:100vh}header{width:100%;padding:.5rem 0;display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.logo{display:flex;align-items:center;gap:.75rem;font-weight:800;font-size:1.25rem}.logo-icon{background:var(--primary);width:36px;height:36px;border-radius:10px;display:flex;align-items:center;justify-content:center}.card{background:var(--bg-card);backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:1.5rem;padding:1.5rem;width:100%;margin-bottom:2rem}.beat-visualizer{display:grid;grid-template-columns:repeat(var(--beats, 4),1fr);gap:1rem;height:.75rem;margin:1.5rem 0}.beat-dot{background:#ffffff0d;border-radius:9999px;transition:all .1s ease}.beat-dot.active{background:var(--primary);box-shadow:0 0 15px var(--primary-glow);transform:scaleY(1.2)}.beat-dot.downbeat.active{background:#60a5fa;box-shadow:0 0 20px #60a5fa99}.bpm-container{text-align:center;margin:1.5rem 0}.bpm-label{text-transform:uppercase;letter-spacing:.2em;font-size:.75rem;color:var(--text-muted);font-weight:600;display:block;margin-bottom:.5rem}.bpm-value-group{display:flex;align-items:center;justify-content:center;gap:2rem}.bpm-number{font-size:clamp(5rem,25vw,10rem);font-weight:900;letter-spacing:-.05em;line-height:1;user-select:none}.btn-icon{background:#ffffff0d;border:none;color:var(--text-main);width:3.5rem;height:3.5rem;border-radius:1rem;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}.btn-icon:hover{background:var(--primary-glow);color:var(--primary)}.btn-icon:active{transform:scale(.95)}.slider-container{width:100%;padding:1rem 0}input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:6px;background:var(--border-color);border-radius:5px;outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:24px;height:24px;background:#fff;border:4px solid var(--primary);border-radius:50%;cursor:pointer;box-shadow:0 0 10px #0000004d;transition:transform .1s}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.1)}.controls-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.5rem;width:100%;margin-bottom:3rem}.control-item{background:var(--bg-card);border:1px solid var(--border-color);padding:1.5rem;border-radius:1.5rem}.control-label{font-size:.75rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}.btn-group{display:flex;gap:.5rem}.btn-choice{flex:1;padding:.75rem 0;background:#ffffff0d;border:none;color:var(--text-main);border-radius:.75rem;font-weight:700;cursor:pointer}.btn-choice.active{background:var(--primary);box-shadow:0 0 15px var(--primary-glow)}.main-actions{display:flex;gap:1.5rem;width:100%;max-width:600px;margin:0 auto}.tap-btn{width:120px;height:80px;background:#ffffff0d;border-radius:1.25rem;border:none;color:var(--text-main);font-weight:900;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center}.play-btn{flex:1;height:80px;background:var(--primary);border-radius:1.25rem;border:none;color:#fff;font-weight:800;font-size:1.5rem;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:1rem;box-shadow:0 10px 30px var(--primary-glow)}.play-btn:hover{transform:translateY(-2px)}.play-btn:active{transform:scale(.98)}.app-footer{margin-top:auto;padding:2rem 0;color:var(--text-muted);font-size:.75rem;width:100%;display:flex;justify-content:space-between;align-items:center}.footer-emphasis{display:flex;align-items:center;gap:.75rem}.pulse{animation:pulse .1s ease-out}@media(max-width:768px){.app-container{padding:1rem;overflow-x:hidden}.bpm-value-group{gap:1rem}.controls-grid{display:none}.main-actions{flex-direction:column;gap:1.5rem;margin-top:1rem}.tap-btn{width:100%;height:60px}.play-btn{width:100%;font-size:1.5rem;flex-shrink:0;flex:none}.beat-visualizer{gap:.5rem}header{margin-bottom:.5rem}.card{padding:1rem;margin-bottom:1.5rem}.app-footer{flex-direction:column;gap:1rem;text-align:center;padding:1.5rem 0}.footer-emphasis{justify-content:center;width:100%}}@media(max-width:480px){.bpm-number{font-size:clamp(4rem,30vw,6rem)}.btn-icon{width:3rem;height:3rem}}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#0f172acc;backdrop-filter:blur(8px);z-index:9999;display:flex!important;align-items:center;justify-content:center;opacity:1;transition:opacity .3s ease,visibility .3s ease;visibility:visible}.modal-overlay.hidden{opacity:0;visibility:hidden;pointer-events:none}.modal-content{background:var(--bg-dark);backdrop-filter:blur(20px);border:1px solid var(--border-color);border-radius:2rem;width:95%;max-width:600px;max-height:90vh;overflow-y:auto;position:relative;box-shadow:0 25px 50px -12px #000c;padding:2.5rem}.toggle-checkbox[data-astro-cid-j7pv25f6]:checked{right:0;border-color:#135bec}.toggle-checkbox[data-astro-cid-j7pv25f6]:checked+.toggle-label[data-astro-cid-j7pv25f6]{background-color:#135bec}.toggle-checkbox[data-astro-cid-j7pv25f6]{right:1.25rem}.active-glow[data-astro-cid-j7pv25f6]{box-shadow:0 0 15px #135bec66}