@import "https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap";:root{--bg-color:#0f172a;--surface-color:#1e293bb3;--primary-color:#3b82f6;--primary-glow:#3b82f680;--accent-color:#8b5cf6;--text-primary:#f8fafc;--text-secondary:#94a3b8;--border-color:#ffffff1a;--success-color:#10b981}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);background-image:radial-gradient(circle at 15%,#3b82f626,#0000 25%),radial-gradient(circle at 85% 30%,#8b5cf626,#0000 25%);flex-direction:column;justify-content:center;align-items:center;min-height:100vh;font-family:Outfit,sans-serif;display:flex;overflow-x:hidden}#root{flex-direction:column;gap:1.5rem;width:100%;max-width:800px;padding:1rem;display:flex}.glass-panel{background:var(--surface-color);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:24px;flex-direction:column;align-items:center;gap:1rem;padding:2rem 1.5rem;transition:transform .3s,box-shadow .3s;display:flex;box-shadow:0 4px 30px #0000001a}h1{text-align:center;background:linear-gradient(135deg, var(--primary-color), var(--accent-color));-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.2rem;font-size:2.2rem;font-weight:800}h2{color:var(--text-primary);font-size:1.5rem;font-weight:600}.subtitle{color:var(--text-secondary);text-align:center;font-size:1rem}.ref-button-container{flex-direction:column;align-items:center;gap:.5rem;display:flex}.ref-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px;font-size:.85rem;font-weight:600}.ref-button{background:linear-gradient(135deg, var(--primary-color), var(--accent-color));color:#fff;cursor:pointer;width:90px;height:90px;box-shadow:0 0 15px var(--primary-glow);border:none;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;gap:.2rem;font-family:Outfit,sans-serif;font-size:3rem;font-weight:800;transition:all .2s cubic-bezier(.175,.885,.32,1.275);display:flex;position:relative;overflow:hidden}.ref-text{line-height:1}.ref-button:before{content:"";background:linear-gradient(135deg,#fff3,#0000);border-radius:50%;position:absolute;inset:0}.ref-button:hover{box-shadow:0 0 30px var(--primary-glow);transform:scale(1.05)}.ref-button:active{transform:scale(.95)}.ref-button.playing{animation:1s infinite pulse}@keyframes pulse{0%{box-shadow:0 0 0 0 var(--primary-glow)}70%{box-shadow:0 0 0 20px #3b82f600}to{box-shadow:0 0 #3b82f600}}.exercise-container{flex-direction:column;align-items:center;gap:1rem;width:100%;display:flex}.chord-display{color:var(--text-primary);letter-spacing:1px;border:1px solid var(--border-color);text-align:center;background:#ffffff0d;border-radius:12px;padding:.5rem 1.5rem;font-size:1.8rem;font-weight:800}.primary-btn{color:var(--text-primary);border:1px solid var(--primary-color);cursor:pointer;background:0 0;border-radius:12px;padding:.6rem 1rem;font-family:inherit;font-size:.9rem;font-weight:600;transition:all .2s}.primary-btn:hover{background:#3b82f61a;box-shadow:0 0 15px #3b82f633}.primary-btn:active{transform:scale(.98)}.notes-container{flex-wrap:wrap;justify-content:center;gap:.8rem;margin-top:.5rem;display:flex}.note-btn{border:1px solid var(--border-color);color:#0000;cursor:pointer;background:#ffffff0d;border-radius:12px;justify-content:center;align-items:center;width:60px;height:60px;font-family:Outfit,sans-serif;font-size:1.2rem;font-weight:600;transition:all .3s;display:flex;position:relative}.note-btn:after{content:"?";color:var(--text-secondary);font-size:2rem;transition:opacity .2s;position:absolute}.note-btn:hover{background:#ffffff1a;transform:translateY(-2px)}.note-btn.revealed{color:var(--text-primary);background:var(--surface-color);border-color:var(--success-color);box-shadow:0 0 15px #10b98133}.note-btn.revealed:after{opacity:0}.note-btn.playing{border-color:var(--primary-color);box-shadow:0 0 20px var(--primary-glow)}@media (width<=380px){.glass-panel{padding:1.5rem 1rem}.primary-btn{padding:.5rem .8rem;font-size:.8rem}.note-btn{width:50px;height:50px}}