#rotate-overlay{display:none}@media(max-width:900px)and (orientation:portrait){#rotate-overlay{display:flex;position:fixed;top:0;right:0;bottom:0;left:0;z-index:99999;background:#1c1c1e;color:#fff;flex-direction:column;align-items:center;justify-content:center;gap:1rem}#app-container{visibility:hidden}}.rotate-content{text-align:center}.rotate-icon{font-size:4rem;display:inline-block;animation:rotate-hint 1.5s ease-in-out infinite}.rotate-content p{font-size:1.2rem;font-weight:600;margin:.5rem 0 0;letter-spacing:.03em}@keyframes rotate-hint{0%{transform:rotate(0)}40%{transform:rotate(90deg)}60%{transform:rotate(90deg)}to{transform:rotate(0)}}*,*:before,*:after{box-sizing:border-box}body{margin:0;padding:1rem;min-height:100vh;display:flex;justify-content:center;align-items:flex-start;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:#f0f2f5;color:#333;position:relative}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;background-image:url(../Media/images/PianoGuy1.png);background-size:cover;background-position:center;opacity:.3;pointer-events:none;z-index:0}#app-container{position:relative;z-index:1;width:100%;max-width:900px;background:#fff;padding:2rem;border-radius:12px;box-shadow:0 4px 20px #0000001a;text-align:center}h1{margin-top:0;color:#1c1c1e}h2{color:#2c3e50}#main-menu{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:2rem}.menu-button{flex:1;min-width:140px;padding:.8rem 1rem;background-color:#3498db;color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:background-color .2s,transform .1s;box-shadow:0 3px 5px #0000001a}.menu-button:hover{background-color:#2980b9}.menu-button:active{transform:translateY(2px);box-shadow:0 1px 2px #0000001a}.menu-button.active{background-color:#2c3e50}.content-page{display:none}.content-page.active{display:block}#scale-controls{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:1.5rem;margin-bottom:2rem}.control-group{display:flex;align-items:center;gap:.5rem}#scale-controls label{font-weight:500}#scale-controls select{padding:.5rem 1rem;border-radius:8px;border:1px solid #ccc;background-color:#fff;font-size:1rem;cursor:pointer}#hand-select{min-width:120px;padding:.5rem}.manual-navigation{display:flex;justify-content:center;align-items:center;gap:1.5rem;margin:1rem 0}.nav-button{padding:.6rem 1.5rem;background-color:#3498db;color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:background-color .2s,transform .1s}.nav-button:hover{background-color:#2980b9}.nav-button:active{transform:translateY(2px)}.nav-button:disabled{background-color:#95a5a6;cursor:not-allowed;transform:none}#step-counter{font-size:1.1rem;font-weight:600;min-width:4rem;text-align:center}#metronome-container{margin:1.5rem auto;padding:1rem;background-color:#f8f8f8;border-radius:8px;max-width:600px}#metronome-details>summary,#tempo-settings>summary{cursor:pointer;font-weight:700;font-size:1rem;padding:4px 0;outline:none}#metronome-details>summary{margin-bottom:12px}#tempo-settings{margin-top:8px;background:#ececf6;border-radius:6px;padding:8px 12px}#tempo-settings[open]{background:#e0e0f0}.metronome-controls{display:flex;flex-direction:column;align-items:center;gap:1rem}.control-button{padding:.6rem 1.2rem;background-color:#3498db;color:#fff;border:none;border-radius:8px;font-weight:600;cursor:pointer;transition:background-color .2s,transform .1s;min-width:140px}.control-button:hover{background-color:#2980b9}.control-button:active{transform:translateY(2px)}#metronome-toggle.active{background-color:#e74c3c}#auto-play-scale.active{background-color:#27ae60}.tempo-control{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:.5rem;width:100%;margin-top:.5rem}.tempo-control label{font-weight:500}#tempo-value{font-weight:600;min-width:30px;text-align:right}.slider-container{display:flex;align-items:center;width:100%;max-width:300px;margin:.5rem 0}#tempo-slider{flex-grow:1;margin:0 .5rem}.tempo-btn{padding:.3rem .5rem;background-color:#95a5a6;color:#fff;border:none;border-radius:4px;font-weight:600;cursor:pointer;transition:background-color .2s}.tempo-btn:hover{background-color:#7f8c8d}#tempo-input{width:60px;padding:.3rem;text-align:center;border:1px solid #ccc;border-radius:4px}.hands-nav-wrapper{display:flex;align-items:center;justify-content:center;gap:.75rem;margin-bottom:.25rem}.step-counter-row{text-align:center;margin-bottom:1.25rem}.nav-button--side{flex-shrink:0;width:2.6rem;height:2.6rem;padding:0;font-size:1.2rem;border-radius:50%;display:flex;align-items:center;justify-content:center;align-self:center}#hands-container{display:flex;justify-content:space-around;flex:1;max-width:800px;padding:0}.hand-container{text-align:center;width:250px}.hand-container h3{margin-bottom:.5rem;font-size:1rem;font-weight:700}.hand{position:relative;width:200px;height:200px;margin:0 auto;overflow:visible}.hand-image{width:100%;height:100%;display:block;position:relative}.finger-highlights{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}#right-hand .finger-highlight[data-finger="1"]{position:absolute;top:85px;left:5px;width:30px;height:30px;border-radius:50%;transition:all .3s}#right-hand .finger-highlight[data-finger="2"]{position:absolute;top:18px;left:27px;width:30px;height:30px;border-radius:50%;transition:all .3s}#right-hand .finger-highlight[data-finger="3"]{position:absolute;top:0;left:80px;width:30px;height:30px;border-radius:50%;transition:all .3s}#right-hand .finger-highlight[data-finger="4"]{position:absolute;top:13px;left:133px;width:30px;height:30px;border-radius:50%;transition:all .3s}#right-hand .finger-highlight[data-finger="5"]{position:absolute;top:35px;left:163px;width:30px;height:30px;border-radius:50%;transition:all .3s}#left-hand .finger-highlight[data-finger="1"]{position:absolute;top:85px;right:5px;width:30px;height:30px;border-radius:50%;transition:all .3s}#left-hand .finger-highlight[data-finger="2"]{position:absolute;top:10px;right:30px;width:30px;height:30px;border-radius:50%;transition:all .3s}#left-hand .finger-highlight[data-finger="3"]{position:absolute;top:0;right:80px;width:30px;height:30px;border-radius:50%;transition:all .3s}#left-hand .finger-highlight[data-finger="4"]{position:absolute;top:5px;right:140px;width:30px;height:45px;border-radius:50%;transition:all .3s}#left-hand .finger-highlight[data-finger="5"]{position:absolute;top:25px;right:163px;width:30px;height:45px;border-radius:50%;transition:all .3s}.finger-highlight.active-finger{background-color:#ffcc00b3;box-shadow:0 0 10px #fc0,0 0 20px #fc0;transform:scale(1.2)}#piano-container{width:100%;padding-bottom:20%;position:relative;margin-bottom:2rem}.piano{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;border:1px solid #333;border-radius:8px 8px 12px 12px;overflow:hidden;box-shadow:0 5px 15px #0003}.key{box-sizing:border-box;border-radius:0 0 5px 5px;transition:all .15s ease;position:relative;cursor:pointer}.key.white{width:4.35%;height:100%;background-color:#fff;border-right:1px solid #ccc;opacity:.3;z-index:1}.key.white:last-of-type{border-right:none}.key.black{width:2.8%;height:60%;background-color:#000;position:absolute;z-index:2;box-shadow:0 3px 6px #0006,inset 0 -10px 10px #ffffff1a;opacity:.3}.key-label{position:absolute;bottom:5px;left:50%;transform:translate(-50%);font-size:10px;color:#888;font-weight:500;pointer-events:none}.key.black .key-label{bottom:3px;color:#ddd;font-size:8px;display:none}@media(min-width:768px){.key.black .key-label{display:block}}.key:hover{background-color:#f8f8f8}.key.black:hover{background-color:#333}.key.highlight{background-color:#fff;opacity:1}.key.black.highlight{background-color:#000;opacity:1;box-shadow:0 3px 6px #0006,inset 0 -10px 10px #0064a033}.key.active-left,.key.active-right{background-color:#f7a3a3;transform:translateY(2px);opacity:1}.key.black.active-left,.key.black.active-right{background-color:#ff4343}#finger-position-display{margin:1rem auto;padding:.8rem;border-radius:8px;background-color:#f0f2f5;max-width:600px}#finger-position-display h3{margin:0 0 .5rem;font-size:1rem}#current-position{font-weight:500;margin:0}@media(max-width:900px){#app-container{padding:1.5rem}#main-menu{gap:8px}.menu-button{padding:.7rem .5rem;font-size:.9rem}#scale-controls{flex-direction:column;gap:1rem}}@media(max-width:768px){#app-container{padding:1rem}h1{font-size:1.5rem;margin-bottom:1rem}#main-menu{flex-direction:column;gap:.5rem}.menu-button{width:100%}.control-group{justify-content:center;width:100%}.hands-nav-wrapper{align-items:flex-start}.nav-button--side{margin-top:90px}#hands-container{flex-direction:column;gap:0}.hand-container{width:100%;padding:2rem 0}.hand-container+.hand-container{border-top:1px solid #e0e0e0}#piano-container{padding-bottom:35%}.key-label{font-size:8px;bottom:3px}.key.black{width:7%}}@media(max-height:500px)and (orientation:landscape){h2{font-size:1rem;margin:.2rem 0 .4rem}#app-container{padding:.75rem}#scale-controls{margin-bottom:.5rem;gap:.75rem}#metronome-container{margin:.4rem auto;padding:.4rem .75rem}.step-counter-row{margin-bottom:.4rem}#hands-container{flex-direction:row;gap:3rem;justify-content:center}.hand-container{width:120px;padding:0;border-top:none}.hand-container h3{font-size:.75rem;margin-bottom:.1rem}.hand{transform:scale(.6);transform-origin:top left;margin-right:-80px;margin-bottom:-80px}.nav-button--side{margin-top:52px}#piano-container{padding-bottom:20%;margin-bottom:.6rem}#finger-position-display{margin:.4rem auto;padding:.4rem .6rem}#finger-position-display h3{display:none}}@media(max-width:480px){#app-container{padding:.5rem}h1{font-size:1.2rem}#piano-container{padding-bottom:45%}}