*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
:root{
--primary:#ff6b9d;--secondary:#a78bfa;--accent:#fbbf24;
--text:#2d1b4e;--text-light:rgba(255,255,255,.7);
--glass:rgba(255,255,255,.12);--glass-border:rgba(255,255,255,.18);
--key1:#ff6b6b;--key2:#ff9f43;--key3:#feca57;--key4:#48dbfb;
--key5:#0abde3;--key6:#a29bfe;--key7:#fd79a8;--key8:#e056fd;
}
html,body{height:100%;overflow:hidden;overflow-x:hidden;touch-action:manipulation}
body{font-family:'Quicksand',sans-serif;color:#fff;display:flex;flex-direction:column;position:relative;overflow-x:hidden}
h1,h2,h3,.logo{font-family:'Baloo 2',cursive}

/* ── ANIMATED BACKGROUND ── */
.bg{position:fixed;inset:0;z-index:0;overflow:hidden}
.bg::before{content:'';position:absolute;inset:-80%;width:260%;height:260%;
background:conic-gradient(from 0deg at 50% 50%,#1a0533,#2d1b69,#0f3460,#1a0533,#3b1f7e,#1a0533);
animation:bgSpin 30s linear infinite}
.bg::after{content:'';position:absolute;inset:0;
background:radial-gradient(ellipse at 30% 20%,rgba(167,139,250,.3),transparent 50%),
radial-gradient(ellipse at 70% 80%,rgba(255,107,157,.2),transparent 50%),
radial-gradient(ellipse at 50% 50%,rgba(72,219,251,.15),transparent 60%)}
@keyframes bgSpin{to{transform:rotate(360deg)}}
.stars{position:fixed;inset:0;z-index:1;pointer-events:none}

/* ── THEME FLOATERS ── */
.theme-floaters{position:fixed;inset:0;z-index:1;pointer-events:none;overflow:hidden}
.floater{position:absolute;pointer-events:none;z-index:1;will-change:transform;
animation:floatUp var(--dur) var(--delay) linear infinite}
@keyframes floatUp{
0%{transform:translateY(110vh) translateX(0) rotate(0deg) scale(var(--sc));opacity:0}
5%{opacity:var(--op)}
85%{opacity:var(--op)}
100%{transform:translateY(-15vh) translateX(var(--drift)) rotate(var(--spin)) scale(var(--sc));opacity:0}
}
.floater-cloud{animation-name:floatCloud}
@keyframes floatCloud{
0%{transform:translateX(-20vw) translateY(var(--cy)) scale(var(--sc));opacity:0}
10%{opacity:var(--op)}
90%{opacity:var(--op)}
100%{transform:translateX(120vw) translateY(var(--cy)) scale(var(--sc));opacity:0}
}

/* ── TODDLER THEME ── */
body[data-theme="toddler"] .bg::before{
background:linear-gradient(180deg,#87CEEB 0%,#B0E0FF 30%,#FFE4F0 60%,#FFDAB9 100%);
animation:none;inset:0;width:100%;height:100%}
body[data-theme="toddler"] .bg::after{
background:radial-gradient(ellipse at 20% 15%,rgba(255,255,255,.6),transparent 40%),
radial-gradient(ellipse at 80% 25%,rgba(255,255,255,.4),transparent 35%),
radial-gradient(ellipse at 50% 80%,rgba(255,182,193,.3),transparent 50%)}
body[data-theme="toddler"] .stars{display:none}
body[data-theme="toddler"] .topbar{background:rgba(255,255,255,.25);border-bottom-color:rgba(255,255,255,.35)}
body[data-theme="toddler"] .logo{background:linear-gradient(135deg,#ff6b9d,#ff9f43,#feca57);
-webkit-background-clip:text;background-clip:text}
body[data-theme="toddler"] .score-strip{background:rgba(255,255,255,.3);border-color:rgba(255,255,255,.4)}
body[data-theme="toddler"] .score-song-title{background:linear-gradient(90deg,#ff6b9d,#ff9f43);
-webkit-background-clip:text;background-clip:text}
body[data-theme="toddler"] .dropdown{background:rgba(255,255,255,.92);backdrop-filter:blur(30px)}
body[data-theme="toddler"] .dropdown-search{background:rgba(0,0,0,.06);color:#333;border-color:rgba(0,0,0,.12)}
body[data-theme="toddler"] .dropdown-search::placeholder{color:rgba(0,0,0,.35)}
body[data-theme="toddler"] .dc{background:rgba(0,0,0,.06);color:rgba(0,0,0,.6);border-color:rgba(0,0,0,.1)}
body[data-theme="toddler"] .dc.active{background:rgba(255,107,157,.2);color:#e0457b;border-color:rgba(255,107,157,.4)}
body[data-theme="toddler"] .si .stt{color:rgba(0,0,0,.75)}
body[data-theme="toddler"] .si .sd{color:rgba(0,0,0,.35)}
body[data-theme="toddler"] .si:hover{background:rgba(0,0,0,.05);border-color:rgba(0,0,0,.1)}
body[data-theme="toddler"] .si.active{background:rgba(255,107,157,.1);border-color:rgba(255,107,157,.25)}
body[data-theme="toddler"] .dropdown-footer{border-top-color:rgba(0,0,0,.08)}
body[data-theme="toddler"] .dropdown-footer .btn-cfg{background:rgba(0,0,0,.06);color:rgba(0,0,0,.5);border-color:rgba(0,0,0,.1) !important}
body[data-theme="toddler"] .modal{background:rgba(255,255,255,.95);border-color:rgba(0,0,0,.1)}
body[data-theme="toddler"] .modal input{background:rgba(0,0,0,.05);color:#333;border-color:rgba(0,0,0,.12)}
body[data-theme="toddler"] .modal input::placeholder{color:rgba(0,0,0,.3)}
body[data-theme="toddler"] .modal .btn-s{background:rgba(0,0,0,.06);color:rgba(0,0,0,.6);border-color:rgba(0,0,0,.1) !important}
body[data-theme="toddler"] .modal label{color:rgba(0,0,0,.6)}
body[data-theme="toddler"] .modal .api-info{color:rgba(0,0,0,.5)}
body[data-theme="toddler"]::after{content:'';position:fixed;bottom:0;left:0;right:0;height:60px;z-index:0;
background:linear-gradient(180deg,transparent,rgba(119,196,99,.5) 40%,rgba(76,175,80,.6));pointer-events:none}

/* ── LAYOUT ── */
.app{position:relative;z-index:2;display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden;max-width:100vw}

/* ── TOP BAR ── */
.topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;
backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
background:rgba(26,5,51,.5);border-bottom:1px solid var(--glass-border);flex-shrink:0;z-index:10}
.topbar-left{display:flex;align-items:center;gap:10px}
.logo{font-size:1.3rem;font-weight:800;background:linear-gradient(135deg,#ff6b9d,#a78bfa,#48dbfb);
-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.topbar-right{display:flex;align-items:center;gap:6px}
.topbar-actions{display:flex;gap:6px}
.topbar-actions button,.top-btn{padding:8px 14px;border-radius:24px;border:1px solid var(--glass-border);
background:var(--glass);color:#fff;font-family:inherit;font-weight:600;font-size:.75rem;
cursor:pointer;transition:all .2s;backdrop-filter:blur(10px)}
.topbar-actions button:hover,.top-btn:hover{background:rgba(255,255,255,.2);transform:scale(1.05)}
.top-btn.active{background:rgba(255,107,157,.3);border-color:var(--primary)}
.library-btn{background:linear-gradient(135deg,rgba(255,107,157,.25),rgba(167,139,250,.25)) !important;
border-color:rgba(255,107,157,.4) !important}
.library-btn:hover{background:linear-gradient(135deg,rgba(255,107,157,.4),rgba(167,139,250,.4)) !important}
.library-btn.open{background:rgba(255,107,157,.3) !important;border-color:var(--primary) !important}

/* ── THEME BUTTON ── */
.theme-btn{width:36px;height:36px;border-radius:50%;border:2px solid var(--glass-border);
background:var(--glass);backdrop-filter:blur(10px);cursor:pointer;font-size:1.1rem;
display:flex;align-items:center;justify-content:center;transition:all .25s;line-height:1;padding:0}
.theme-btn:hover{transform:scale(1.15) rotate(15deg);border-color:var(--primary);
background:rgba(255,255,255,.2)}
.theme-btn:active{transform:scale(.95)}
body[data-theme="toddler"] .theme-btn{border-color:rgba(0,0,0,.15);background:rgba(255,255,255,.4)}
body[data-theme="toddler"] .topbar-actions button,
body[data-theme="toddler"] .top-btn{color:#555;border-color:rgba(0,0,0,.12);background:rgba(255,255,255,.4)}
body[data-theme="toddler"] .topbar-actions button:hover,
body[data-theme="toddler"] .top-btn:hover{background:rgba(255,255,255,.6)}
body[data-theme="toddler"] .top-btn.active{background:rgba(255,107,157,.2);color:#e0457b;border-color:rgba(255,107,157,.4)}
body[data-theme="toddler"] .library-btn{background:rgba(255,107,157,.15) !important;border-color:rgba(255,107,157,.3) !important;color:#e0457b !important}

/* ── DROPDOWN (top) ── */
.dropdown-overlay{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:25;
opacity:0;pointer-events:none;transition:opacity .3s}
.dropdown-overlay.show{opacity:1;pointer-events:all}

.dropdown{position:fixed;top:0;right:0;z-index:30;
width:400px;max-width:95vw;max-height:80vh;
transform:translateY(-100%);transition:transform .35s cubic-bezier(.32,.72,0,1);
background:rgba(26,5,51,.95);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);
border-bottom:1px solid var(--glass-border);border-left:1px solid var(--glass-border);
border-radius:0 0 0 24px;
display:flex;flex-direction:column;overflow:hidden}
.dropdown.open{transform:translateY(0)}
.dropdown-inner{display:flex;flex-direction:column;height:100%;overflow:hidden}
.dropdown-top{display:flex;align-items:center;gap:8px;padding:16px 16px 12px;flex-shrink:0}
.dropdown-search{flex:1;min-width:150px;padding:8px 14px;border-radius:20px;border:1px solid var(--glass-border);
background:rgba(255,255,255,.08);color:#fff;font-family:inherit;font-size:.85rem;outline:none}
.dropdown-search::placeholder{color:rgba(255,255,255,.35)}
.dropdown-search:focus{border-color:var(--primary);background:rgba(255,255,255,.12)}
.dropdown-cats{display:flex;gap:4px;overflow-x:auto;padding:0 16px 10px;flex-shrink:0;scrollbar-width:none}
.dropdown-cats::-webkit-scrollbar{display:none}
.dc{padding:5px 12px;border-radius:16px;font-size:.7rem;font-weight:700;cursor:pointer;
border:1px solid var(--glass-border);background:var(--glass);color:rgba(255,255,255,.7);
transition:all .2s;white-space:nowrap}
.dc.active{background:rgba(255,107,157,.3);color:#fff;border-color:var(--primary)}
.dc:hover{background:rgba(255,255,255,.15)}
.dropdown-songs{flex:1;overflow-y:auto;padding:0 12px 12px;scrollbar-width:thin;
scrollbar-color:rgba(255,255,255,.15) transparent}
.dropdown-songs::-webkit-scrollbar{width:4px}
.dropdown-songs::-webkit-scrollbar-thumb{background:rgba(255,255,255,.15);border-radius:2px}
.dropdown-footer{display:flex;gap:8px;padding:12px 16px;border-top:1px solid var(--glass-border);flex-shrink:0}
.dropdown-footer button{flex:1;padding:10px;border-radius:14px;border:none;font-family:inherit;
font-weight:700;font-size:.8rem;cursor:pointer;transition:all .2s}
.dropdown-footer .btn-gen{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}
.dropdown-footer .btn-gen:hover{transform:scale(1.02);box-shadow:0 4px 15px rgba(255,107,157,.3)}
.dropdown-footer .btn-cfg{background:var(--glass);color:rgba(255,255,255,.7);border:1px solid var(--glass-border) !important}

.si{padding:10px 12px;border-radius:12px;cursor:pointer;display:flex;align-items:center;
gap:10px;transition:all .15s;margin-bottom:3px;border:1px solid transparent}
.si:hover{background:rgba(255,255,255,.08);border-color:var(--glass-border)}
.si.active{background:rgba(255,107,157,.15);border-color:rgba(255,107,157,.3)}
.si .st{font-size:1rem;cursor:pointer;opacity:.3;transition:all .2s;flex-shrink:0}
.si .st.fav{opacity:1}
.si .stt{flex:1;font-weight:600;font-size:.8rem;line-height:1.3;color:rgba(255,255,255,.85)}
.si .sd{font-size:.55rem;color:rgba(255,255,255,.4);flex-shrink:0}

/* ── CENTER WRAP (vertically centers piano + score) ── */
.center-wrap{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
position:relative;z-index:5;overflow:hidden;gap:0;padding:10px 0}

/* ── SCORE STRIP (above piano) ── */
.score-strip{backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
background:rgba(26,5,51,.5);border:1px solid var(--glass-border);border-radius:16px;
padding:10px 16px 8px;display:none;flex-shrink:0;z-index:9;overflow:hidden;
max-width:min(95vw,700px);width:100%;margin-bottom:12px}
.score-strip.visible{display:block}
.score-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:6px;flex-wrap:wrap;gap:4px}
.score-song-title{font-family:'Baloo 2',cursive;font-size:1rem;font-weight:700;
background:linear-gradient(90deg,#ff6b9d,#a78bfa);-webkit-background-clip:text;
-webkit-text-fill-color:transparent;background-clip:text}
.score-mode-btns{display:flex;gap:4px}
.score-mode-btn{padding:4px 12px;border-radius:16px;border:1px solid var(--glass-border);
background:var(--glass);color:#fff;font-family:inherit;font-weight:600;font-size:.65rem;
cursor:pointer;transition:all .2s}
.score-mode-btn.active{background:rgba(255,107,157,.3);border-color:var(--primary)}
body[data-theme="toddler"] .score-mode-btn{color:#555;border-color:rgba(0,0,0,.1);background:rgba(255,255,255,.4)}
body[data-theme="toddler"] .score-mode-btn.active{background:rgba(255,107,157,.2);color:#e0457b;border-color:rgba(255,107,157,.4)}
.score-controls{display:flex;align-items:center;gap:8px;margin-bottom:6px;flex-wrap:wrap}
.score-controls button{padding:4px 12px;border-radius:12px;border:1px solid var(--glass-border);
background:var(--glass);color:#fff;font-family:inherit;font-weight:600;font-size:.7rem;cursor:pointer;transition:all .2s}
.score-controls button.playing{background:rgba(255,107,157,.4);border-color:var(--primary)}
.score-controls button:hover{background:rgba(255,255,255,.2)}
body[data-theme="toddler"] .score-controls button{color:#555;border-color:rgba(0,0,0,.1);background:rgba(255,255,255,.4)}
.tempo-ctrl{display:flex;align-items:center;gap:4px;font-size:.65rem;font-weight:600;margin-left:auto}
.tempo-ctrl input[type=range]{width:60px;accent-color:var(--primary);height:4px}
.score-notes-wrap{overflow-x:auto;overflow-y:hidden;padding:4px 0;scrollbar-width:none;-ms-overflow-style:none;max-width:100%}
.score-notes-wrap::-webkit-scrollbar{display:none}
.score-notes{display:flex;gap:4px;flex-wrap:wrap;justify-content:center}
.sn{display:flex;flex-direction:column;align-items:center;gap:2px;min-width:36px;transition:all .15s}
.sn .ly{font-size:.55rem;color:rgba(255,255,255,.7);max-width:40px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;text-align:center;font-weight:700}
body[data-theme="toddler"] .sn .ly{color:rgba(0,0,0,.5)}
body[data-theme="toddler"] .sn .sf{color:rgba(0,0,0,.35)}
body[data-theme="toddler"] .learn-msg{color:#e0457b}
.sn .nm{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;
font-weight:800;font-size:.95rem;color:#fff;transition:all .2s;text-shadow:0 1px 3px rgba(0,0,0,.4)}
.sn .sf{font-size:.45rem;font-weight:700;color:rgba(255,255,255,.4)}
.sn .wn{display:none}
.sn.rest .nm{background:transparent !important;width:16px;font-size:.7rem;opacity:.3}
.sn.active .nm{transform:scale(1.4);box-shadow:0 0 20px currentColor;filter:brightness(1.3)}
.sn.played .nm{opacity:.3}
.sn.target .nm{animation:targetPulse 1s infinite}
@keyframes targetPulse{0%,100%{box-shadow:0 0 8px currentColor}50%{box-shadow:0 0 24px currentColor;transform:scale(1.3)}}
.progress-track{height:3px;background:rgba(255,255,255,.1);border-radius:2px;margin-top:6px;max-width:100%;overflow:hidden}
body[data-theme="toddler"] .progress-track{background:rgba(0,0,0,.08)}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:2px;transition:width .3s;max-width:100%}
.learn-msg{font-size:.75rem;font-weight:600;text-align:center;margin-top:4px;min-height:18px;color:var(--accent)}

/* ── PIANO AREA ── */
.piano-area{display:flex;align-items:center;justify-content:center;position:relative;overflow:visible;z-index:5;flex-shrink:0}
.piano{display:flex;gap:6px;padding:20px;position:relative;z-index:2}
.key{width:clamp(44px,10vw,90px);height:clamp(140px,30vh,260px);border-radius:0 0 20px 20px;
cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;
padding-bottom:clamp(12px,3vh,24px);transition:transform .08s,box-shadow .08s;position:relative;
user-select:none;-webkit-user-select:none;overflow:hidden;
border:2px solid rgba(255,255,255,.25)}
.key::before{content:'';position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.2) 0%,transparent 40%);
border-radius:0 0 20px 20px;pointer-events:none}
.key::after{content:'';position:absolute;bottom:0;left:0;right:0;height:30%;
background:linear-gradient(180deg,transparent,rgba(0,0,0,.15));border-radius:0 0 20px 20px;pointer-events:none}
.key:active,.key.pressed{transform:translateY(6px) scale(.97)}
.key .key-num{font-family:'Baloo 2',cursive;font-size:clamp(1.4rem,4vw,2.4rem);color:#fff;
text-shadow:0 2px 4px rgba(0,0,0,.3);position:relative;z-index:1}
.key .key-solfege{font-weight:700;font-size:clamp(.55rem,1.5vw,.85rem);color:rgba(255,255,255,.85);
position:relative;z-index:1}
.key .key-western{font-size:clamp(.45rem,1vw,.65rem);color:rgba(255,255,255,.5);
position:relative;z-index:1;margin-top:2px}
.key.glow{animation:keyBounce .35s cubic-bezier(.34,1.56,.64,1)}
@keyframes keyBounce{0%{transform:translateY(6px) scale(.97)}40%{transform:translateY(-4px) scale(1.04)}100%{transform:translateY(0) scale(1)}}
.key .ripple{position:absolute;border-radius:50%;background:rgba(255,255,255,.4);
transform:scale(0);animation:rippleOut .6s forwards;pointer-events:none}
@keyframes rippleOut{to{transform:scale(4);opacity:0}}
.key-outline{position:absolute;inset:-4px;border-radius:0 0 24px 24px;border:3px solid #fff;
opacity:0;transition:opacity .2s;pointer-events:none}
.key.hint .key-outline{opacity:1;animation:hintPulse 1.2s infinite}
@keyframes hintPulse{0%,100%{opacity:.4;border-color:rgba(255,255,255,.4)}50%{opacity:1;border-color:#fff}}

/* Note float */
.note-pop{position:absolute;pointer-events:none;font-size:1.5rem;z-index:20;
animation:notePop 1s cubic-bezier(.34,1.56,.64,1) forwards}
@keyframes notePop{0%{opacity:1;transform:translateY(0) scale(1)}100%{opacity:0;transform:translateY(-100px) scale(.5)}}

/* ── MODALS ── */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;
justify-content:center;z-index:100;opacity:0;pointer-events:none;transition:opacity .2s}
.modal-overlay.show{opacity:1;pointer-events:all}
.modal{background:rgba(26,5,51,.95);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);
border:1px solid var(--glass-border);border-radius:24px;padding:28px;max-width:400px;width:90%;
transform:scale(.9);transition:transform .25s cubic-bezier(.34,1.56,.64,1)}
.modal-overlay.show .modal{transform:scale(1)}
.modal h2{font-family:'Baloo 2',cursive;text-align:center;margin-bottom:14px;font-size:1.3rem;
background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;
-webkit-text-fill-color:transparent;background-clip:text}
.modal input{width:100%;padding:12px 16px;border-radius:14px;border:1px solid var(--glass-border);
background:rgba(255,255,255,.08);color:#fff;font-family:inherit;font-size:.9rem;outline:none;margin-bottom:12px}
.modal input:focus{border-color:var(--primary);background:rgba(255,255,255,.12)}
.modal input::placeholder{color:rgba(255,255,255,.3)}
.modal .modal-btns{display:flex;gap:8px;justify-content:flex-end;margin-top:8px}
.modal button{padding:10px 22px;border-radius:14px;border:none;font-family:inherit;font-weight:700;
cursor:pointer;transition:all .2s;font-size:.85rem}
.modal .btn-p{background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff}
.modal .btn-s{background:var(--glass);color:rgba(255,255,255,.7);border:1px solid var(--glass-border) !important}
.modal .btn-p:hover{transform:scale(1.05)}
.modal .api-info{font-size:.75rem;color:rgba(255,255,255,.5);margin-bottom:12px;line-height:1.5}
.modal label{font-weight:700;font-size:.8rem;display:block;margin-bottom:4px;color:rgba(255,255,255,.7)}
.loading-anim{text-align:center;padding:20px;font-size:1.8rem}
.loading-anim .la{animation:loadBounce 1.2s infinite}
@keyframes loadBounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}

/* ── CONFETTI ── */
.confetti-box{position:fixed;inset:0;pointer-events:none;z-index:200}
.conf{position:absolute;border-radius:2px;animation:confDrop 3s forwards}
@keyframes confDrop{0%{opacity:1;transform:translateY(-100vh) rotate(0)}100%{opacity:0;transform:translateY(100vh) rotate(720deg)}}

/* ── RESPONSIVE ── */
@media(max-width:600px){
.key{width:clamp(36px,11vw,52px);height:clamp(110px,25vh,160px);gap:3px;border-radius:0 0 12px 12px}
.piano{gap:3px;padding:8px}
.key .key-western{display:none}
.key .key-solfege{font-size:.5rem}
.key .key-num{font-size:1.2rem}
.topbar{padding:6px 10px}
.logo{font-size:1rem}
.topbar-left{gap:6px}
.topbar-right{gap:4px}
.topbar-actions{gap:4px}
.topbar-actions button{padding:5px 8px;font-size:.6rem}
.library-btn{padding:5px 10px !important;font-size:.65rem !important}
.theme-btn{width:30px;height:30px;font-size:.9rem}
.dropdown{width:100%;max-width:100vw;border-radius:0;border-left:none}
.score-strip{padding:8px 10px;margin-bottom:8px;border-radius:12px;max-width:98vw}
.score-header{gap:4px}
.score-song-title{font-size:.8rem}
.score-mode-btn{padding:3px 8px;font-size:.55rem}
.score-controls{gap:4px}
.score-controls button{padding:3px 8px;font-size:.6rem}
.tempo-ctrl{gap:2px;font-size:.55rem}
.tempo-ctrl input[type=range]{width:40px}
.sn{min-width:28px}
.sn .nm{width:26px;height:26px;font-size:.75rem}
.sn .sf{font-size:.35rem}
.sn .ly{font-size:.45rem;max-width:30px}
.learn-msg{font-size:.65rem}
.center-wrap{padding:5px 0}
}
@media(min-width:601px) and (max-width:900px){
.key{width:clamp(50px,9vw,70px);height:clamp(140px,30vh,220px)}
.dropdown{width:380px}
}