@import "https://fonts.googleapis.com/css2?family=Outfit:wght@400;700;900&display=swap";:root{--bg-color:#f0f4f8;--primary-color:#6c5ce7;--secondary-color:#a29bfe;--accent-color:#ff7675;--correct-color:#55efc4;--wrong-color:#fab1a0;--font-main:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;--shadow-pop:8px 8px 0px #0000001a;--border-radius-pop:24px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--bg-color);color:#2d3436;transition:background-color .3s;overflow-x:hidden}#root{flex-direction:column;justify-content:center;align-items:center;min-height:100vh;padding:20px;display:flex}.card-pop{border:4px solid var(--text-color);box-shadow:12px 12px 0px var(--text-color);text-align:center;background:#fff;border-radius:32px;width:100%;max-width:500px;padding:40px;position:relative;overflow:hidden}@media (width<=480px){.card-pop{box-shadow:8px 8px 0px var(--text-color);border-radius:24px;padding:24px}.title-pop{font-size:2.2rem}}.btn-pop{font-family:var(--font-main);color:#2d3436;cursor:pointer;background:#fff;border:4px solid #2d3436;border-radius:16px;padding:12px 24px;font-size:1.1rem;font-weight:700;text-decoration:none;transition:all .2s cubic-bezier(.175,.885,.32,1.275);position:relative;box-shadow:4px 4px #2d3436}.btn-pop:hover{transform:translate(-2px,-2px);box-shadow:6px 6px #2d3436}.btn-pop:active{transform:translate(2px,2px);box-shadow:0 0 #2d3436}.btn-primary{background:var(--primary-color);color:#fff}.btn-accent{background:var(--accent-color);color:#fff}.btn-outline{color:#2d3436;background:#fff}.title-pop{color:#2d3436;text-transform:uppercase;letter-spacing:-2px;margin-bottom:1rem;font-size:3rem;font-weight:900;line-height:1}.score-badge{color:#fff;background:#2d3436;border-radius:999px;margin-bottom:1.5rem;padding:4px 12px;font-weight:700;display:inline-block}.chord-options{grid-template-columns:repeat(2,1fr);gap:16px;margin-top:2rem;display:grid}.play-area{flex-direction:column;align-items:center;gap:1rem;margin:2rem 0;display:flex}.play-button{background:var(--accent-color);color:#fff;cursor:pointer;border:6px solid #2d3436;border-radius:60px;justify-content:center;align-items:center;width:120px;height:120px;transition:all .2s;display:flex;box-shadow:8px 8px #2d3436}.play-button:hover{transform:scale(1.05)rotate(5deg)}.play-button:active{transform:scale(.95);box-shadow:0 0 #2d3436}.title-icon{margin-bottom:1rem}.feedback-container,.result-icon{flex-direction:column;align-items:center;gap:1rem;display:flex}.result-icon.correct{color:#00b894}.result-icon.wrong{color:#d63031}.non-diatonic{color:#9b59b6;font-family:Georgia,serif;font-style:italic;font-weight:800}.final-score{background:var(--primary-color);color:#fff;border:4px solid #2d3436;border-radius:20px;margin:1rem 0;padding:0 2rem;font-size:4rem;font-weight:900;display:inline-block;box-shadow:6px 6px #2d3436}.level-grid,.mode-grid{flex-direction:column;gap:12px;width:100%;display:flex}.btn-level,.btn-mode{flex-direction:column;align-items:center;gap:4px;padding:16px;display:flex}.level-num,.mode-name{font-size:1.4rem;font-weight:900;line-height:1}.level-desc,.progression-options{gap:12px;grid-template-columns:1fr!important}.progression-options button{white-space:normal;height:auto;min-height:50px;line-height:1.4}.mode-desc{opacity:.9;font-size:.85rem}.btn-secondary{background:var(--secondary-color);color:#2d3436}.btn-accent-alt{color:#2d3436;background:#fdcb6e}.top-meta{justify-content:center;align-items:center;gap:8px;margin-bottom:1rem;display:flex}.level-badge{color:#2d3436;background:#fdcb6e;border-radius:999px;align-items:center;gap:4px;padding:4px 12px;font-size:.9rem;font-weight:900;display:flex}.pop-line-yellow{background:linear-gradient(#0000 82%,#ffeaa7 82%);border-radius:4px;padding:0 2px}.pop-line-red{color:#2d3436;background:linear-gradient(#0000 82%,#ff7675 82%);border-radius:4px;padding:0 2px}.btn-play-mini{color:#2d3436;cursor:pointer;background:#fab1a0;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;transition:all .2s;display:flex;box-shadow:2px 2px #0000001a}.btn-play-mini:hover{background:#ffeaa7;transform:scale(1.1)}@media (width<=600px){.level-grid{grid-template-columns:1fr!important}}.piano-container{justify-content:center;width:100%;margin:1.5rem 0 .5rem;display:flex}.piano-keys{-webkit-user-select:none;user-select:none;background:#2d3436;border-radius:12px;width:100%;max-width:440px;height:90px;padding:4px;display:flex;position:relative;box-shadow:0 4px 10px #00000026}.white-key{background:#fff;border:1px solid #dcdde1;border-bottom-right-radius:6px;border-bottom-left-radius:6px;flex:1;justify-content:center;align-items:flex-end;padding-bottom:6px;transition:background .15s,transform .1s;display:flex;position:relative;box-shadow:inset 0 -4px #dedede}.white-key.active{box-shadow:inset 0 -2px #0984e3;background:#74b9ff!important}.key-label{color:#a4b0be;font-size:.65rem;font-weight:700}.white-key.active .key-label{color:#fff}.black-key{z-index:2;background:#2d3436;border-bottom-right-radius:4px;border-bottom-left-radius:4px;justify-content:center;align-items:flex-end;width:5.5%;height:55px;padding-bottom:4px;transition:background .15s;display:flex;position:absolute;top:4px;box-shadow:2px 2px 4px #0006}.black-key.active{background:#ff7675!important}.key-label-black{color:#dfe4ea;font-size:.55rem}.modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;background:#0009;justify-content:center;align-items:center;width:100vw;height:100vh;padding:16px;display:flex;position:fixed;top:0;left:0}.modal-content{text-align:left;background:#fff;border:4px solid #2d3436;border-radius:24px;width:100%;max-width:520px;max-height:85vh;padding:24px;overflow-y:auto;box-shadow:8px 8px #2d3436}.modal-header{justify-content:space-between;align-items:center;margin-bottom:1rem;display:flex}.btn-icon{cursor:pointer;background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;padding:4px;transition:background .2s;display:flex}.btn-icon:hover{background:#f1f2f6}.tab-menu{border-bottom:2px solid #f1f2f6;gap:6px;margin-bottom:1rem;padding-bottom:8px;display:flex;overflow-x:auto}.tab-btn{cursor:pointer;white-space:nowrap;background:#f1f2f6;border:2px solid #0000;border-radius:12px;align-items:center;gap:4px;padding:8px 12px;font-size:.85rem;font-weight:700;transition:all .2s;display:flex}.tab-btn.active{background:var(--primary-color);color:#fff;border-color:#2d3436}.tab-content{font-size:.95rem;line-height:1.6}.tab-content h3{color:#2d3436;margin-bottom:.5rem}.tab-content p{color:#636e72;margin-bottom:1rem}.guide-card{background:#f8f9fa;border:2px solid #e9ecef;border-radius:12px;margin-bottom:10px;padding:12px 16px}.guide-card h4{color:#2d3436;margin-bottom:4px;font-size:1rem}.guide-card code{color:#2d3436;background:#ffeaa7;border-radius:6px;margin-top:4px;padding:2px 8px;font-weight:700;display:inline-block}.theory-guide-modal{max-width:600px!important}.section-title{border-left:4px solid var(--primary-color);margin:1.2rem 0 .6rem;padding-left:10px}.section-title h3{color:#2d3436;font-size:1.1rem;font-weight:900}.btn-sound-sample{background:var(--primary-color);color:#fff;cursor:pointer;border:2px solid #2d3436;border-radius:999px;align-items:center;gap:4px;padding:4px 10px;font-size:.75rem;font-weight:700;transition:transform .1s;display:inline-flex;box-shadow:2px 2px #2d3436}.btn-sound-sample:hover{transform:translate(-1px,-1px)}.btn-sound-sample:active{box-shadow:none;transform:translate(1px,1px)}.note-grid,.degree-grid{grid-template-columns:repeat(7,1fr);gap:4px;margin:8px 0;display:grid}.note-box,.degree-box{text-align:center;background:#fff;border:2px solid #2d3436;border-radius:8px;flex-direction:column;padding:6px 2px;font-size:.8rem;font-weight:700;display:flex;box-shadow:2px 2px #2d3436}.note-box span,.degree-box span{color:var(--primary-color);font-size:.95rem;font-weight:900}.seo-table{border-collapse:collapse;width:100%;margin-top:8px;font-size:.8rem}.seo-table th,.seo-table td{text-align:left;border:1px solid #dcdde1;padding:6px 8px}.seo-table th{color:#2d3436;background:#f1f2f6;font-weight:700}