:root{--ink: #1a1410;--ink-soft: #3d342b;--paper: #f4ecdc;--paper-deep: #ebe0c9;--paper-shadow: #d9cbad;--accent: #8b2c20;--accent-deep: #5e1d14;--gold: #a88734;--correct: #3d5a3a;--wrong: #8b2c20;--green: #2f6d4f}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0;background:#f4ecdc;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-tap-highlight-color:transparent;overscroll-behavior:none}html.trainer-locked,body.trainer-locked{overflow:hidden;height:100%;position:fixed;width:100%}#root{min-height:100vh}button{font-family:inherit;transition:transform .1s ease}button:active:not(:disabled){transform:scale(.97)}input{font-family:inherit}.trainer-screen{display:flex;flex-direction:column;height:100vh;height:100dvh;background:var(--paper);background-image:radial-gradient(ellipse at top left,rgba(168,135,52,.08),transparent 50%),radial-gradient(ellipse at bottom right,rgba(139,44,32,.06),transparent 50%);color:var(--ink);font-family:Cormorant Garamond,Georgia,serif;overscroll-behavior:none;overflow:hidden;position:relative;touch-action:manipulation}.trainer-screen:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.9'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.35'/%3E%3C/svg%3E");opacity:.1;pointer-events:none;mix-blend-mode:multiply;z-index:0}.trainer-topbar{flex:0 0 auto;display:flex;align-items:center;min-height:38px;padding:0 .6rem;padding-top:env(safe-area-inset-top);padding-left:max(.6rem,env(safe-area-inset-left));padding-right:max(.6rem,env(safe-area-inset-right));gap:.4rem;position:relative;z-index:1}.trainer-topbar-slot{display:flex;align-items:center;font-family:JetBrains Mono,monospace;font-size:.65rem;letter-spacing:.25em;text-transform:uppercase;color:var(--ink-soft)}.trainer-topbar-left{flex:1 1 0;justify-content:flex-start}.trainer-topbar-center{flex:0 0 auto;justify-content:center}.trainer-topbar-right{flex:1 1 0;justify-content:flex-end}.trainer-progress{flex:0 0 auto;height:3px;background:var(--paper-shadow);position:relative;z-index:1}.trainer-progress-fill{height:100%;background:var(--accent);transition:width .3s ease}.trainer-card-area{flex:1 1 auto;min-height:0;display:flex;align-items:center;justify-content:center;padding:.5rem;overflow:hidden;position:relative;z-index:1;padding-left:max(.5rem,env(safe-area-inset-left));padding-right:max(.5rem,env(safe-area-inset-right))}.trainer-controls{flex:0 0 auto;display:flex;flex-direction:column;gap:.45rem;padding:.5rem .6rem;padding-bottom:calc(env(safe-area-inset-bottom) + .9rem);padding-left:max(.6rem,env(safe-area-inset-left));padding-right:max(.6rem,env(safe-area-inset-right));position:relative;z-index:1}.trainer-end-btn{background:transparent;border:1px solid var(--ink-soft);color:var(--ink-soft);min-height:32px;padding:.3rem .65rem;font-family:JetBrains Mono,monospace;font-size:.6rem;letter-spacing:.25em;text-transform:uppercase;cursor:pointer;border-radius:0}.trainer-end-btn:hover{color:var(--accent);border-color:var(--accent)}.trainer-end-arrow{font-size:.85rem;margin-right:.4rem}.trainer-submit{width:100%;min-height:62px;background:var(--ink);color:var(--paper);border:1px solid var(--ink);padding:1rem 1.25rem;font-family:JetBrains Mono,monospace;font-size:.8rem;letter-spacing:.3em;text-transform:uppercase;cursor:pointer}.trainer-submit:hover:not(:disabled){background:var(--accent);border-color:var(--accent)}.trainer-submit:disabled{opacity:.4;cursor:not-allowed}.trainer-time-line{display:inline-flex;gap:.4rem;align-items:baseline}.trainer-time-best{opacity:.65;font-size:.85em}.np-wrapper{display:flex;flex-direction:column;gap:.5rem;width:100%}.np-slots{display:flex;flex-wrap:wrap;gap:.4rem;justify-content:center}.np-slot{flex:1 1 70px;min-width:70px;max-width:110px;min-height:56px;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:.35rem .5rem;background:var(--paper-deep);border:1px solid var(--ink);cursor:pointer;color:var(--ink);font-family:Cormorant Garamond,serif;box-shadow:3px 3px 0 var(--paper-shadow)}.np-slot.focused{background:var(--ink);color:var(--paper);box-shadow:4px 4px 0 var(--accent)}.np-slot.ready:not(.focused){border-style:dashed;border-color:var(--accent);box-shadow:3px 3px 0 var(--accent)}.np-slot-label{font-family:JetBrains Mono,monospace;font-size:.55rem;letter-spacing:.2em;text-transform:uppercase;opacity:.7;margin-bottom:.15rem}.np-slot-value{font-family:Italiana,serif;font-size:1.6rem;line-height:1}.np-acc-row{display:flex;gap:.4rem;justify-content:center;align-items:center}.np-acc{min-width:48px;min-height:44px;background:var(--paper);border:1px solid var(--ink);color:var(--ink);font-family:Times New Roman,serif;font-size:1.4rem;cursor:pointer;line-height:1}.np-acc.on{background:var(--ink);color:var(--paper)}.np-acc:disabled{opacity:.35;cursor:not-allowed}.np-clear{margin-left:.5rem;min-height:44px;padding:0 .9rem;background:transparent;border:1px solid var(--ink-soft);color:var(--ink-soft);font-family:JetBrains Mono,monospace;font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;cursor:pointer}.np-letter-row{display:grid;grid-template-columns:repeat(7,1fr);gap:.3rem}.np-letter{min-height:48px;background:var(--paper);border:1px solid var(--ink);color:var(--ink);font-family:Italiana,serif;font-size:1.3rem;cursor:pointer;line-height:1}.np-letter:hover{background:var(--paper-deep)}.np-letter.on{background:var(--ink);color:var(--paper)}.cp-quality-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(64px,1fr));gap:.3rem}.cp-quality{min-height:44px;padding:.4rem .3rem;background:var(--paper);border:1px solid var(--ink);color:var(--ink);font-family:Cormorant Garamond,serif;font-size:.95rem;cursor:pointer;line-height:1}.cp-quality.on{background:var(--ink);color:var(--paper)}.cp-quality:disabled{opacity:.35;cursor:not-allowed}.kp-mode-row{display:grid;grid-template-columns:1fr 1fr;gap:.4rem}.kp-mode{min-height:44px;background:var(--paper);border:1px solid var(--ink);color:var(--ink);font-family:Cormorant Garamond,serif;font-size:1rem;cursor:pointer}.kp-mode.on{background:var(--ink);color:var(--paper)}.kp-mode:disabled{opacity:.35;cursor:not-allowed}.ims-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(72px,1fr));gap:.4rem}.ims-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.3rem;padding:.7rem .5rem .5rem;background:var(--paper);border:1px solid var(--ink);color:var(--ink);font-family:JetBrains Mono,monospace;font-size:.55rem;letter-spacing:.2em;text-transform:uppercase;cursor:pointer;min-height:72px}.ims-btn:hover{background:var(--paper-deep)}.ims-btn.on{background:var(--ink);color:var(--paper)}.ims-icon{width:32px;height:32px;object-fit:contain;pointer-events:none}.ims-btn.on .ims-icon{filter:invert(1)}.ims-label{line-height:1}.piano-wrapper{display:flex;flex-direction:column;align-items:center}.piano-svg{width:100%;max-width:700px;height:auto;-webkit-user-select:none;user-select:none}.piano-hint{font-family:JetBrains Mono,monospace;font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-soft);opacity:.7;margin-top:.4rem;text-align:center}.guitar-wrapper{display:flex;flex-direction:column;align-items:stretch;width:100%}.guitar-scroll{width:100%;overflow-x:auto;overflow-y:hidden;-webkit-overflow-scrolling:touch;border:1px solid #1a1410;background:#f4ecdc}.guitar-svg{display:block;-webkit-user-select:none;user-select:none}.guitar-hint{font-family:JetBrains Mono,monospace;font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-soft);opacity:.7;margin-top:.4rem;text-align:center}.staff-wrapper{display:flex;flex-direction:column;align-items:center;margin:.5rem 0}.staff-svg{width:100%;max-width:460px;height:auto;background:#f4ecdc;border:1px solid #1a1410;-webkit-user-select:none;user-select:none;touch-action:none}.staff-acc-row{display:flex;gap:.4rem;margin-top:.5rem;flex-wrap:wrap;justify-content:center}.staff-acc-btn{font-size:1.4rem;min-width:48px;min-height:44px;border:1px solid #1a1410;background:#f4ecdc;color:#1a1410;cursor:pointer;font-family:Times New Roman,serif;line-height:1;padding:0 .5rem}.staff-acc-btn:hover:not(:disabled){background:#ebe0c9}.staff-acc-btn.on{background:#1a1410;color:#f4ecdc}.staff-acc-btn:disabled{opacity:.35;cursor:not-allowed}.staff-acc-btn.ghost{font-family:JetBrains Mono,monospace;font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;padding:0 .85rem}.staff-hint{font-family:JetBrains Mono,monospace;font-size:.6rem;letter-spacing:.2em;text-transform:uppercase;color:#3d342b;opacity:.7;margin-top:.5rem;text-align:center}