:root{--primary-color:#1db954;--bg-color:#0f172a;--surface-color:#1e293b;--text-main:#f8fafc;--text-dim:#94a3b8;--color-correct:#22c55e;--color-wrong:#ef4444;--color-skipped:#64748b;--color-empty:#334155}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body{background-color:var(--bg-color);color:var(--text-main);flex-direction:column;align-items:center;min-height:100vh;padding:20px;display:flex}.hu-shell{width:100%}.hu-header{text-align:center;border-bottom:1px solid var(--surface-color);width:100%;max-width:500px;margin:0 auto 30px;padding-bottom:15px}.hu-header h1{letter-spacing:-1px;font-size:1.6rem;font-weight:700}.hu-header h1 span{color:var(--primary-color)}.hu-main{flex-direction:column;width:100%;max-width:400px;margin:0 auto;display:flex}.attempts-container{flex-direction:column;gap:8px;width:100%;margin-bottom:30px;display:flex}.attempt-row{border:2px solid var(--color-empty);border-radius:4px;justify-content:space-between;align-items:center;height:40px;padding:0 15px;font-size:.9rem;font-weight:700;transition:all .3s;display:flex}.attempt-row.correct{background:var(--color-correct);border-color:var(--color-correct)}.attempt-row.wrong{background:var(--color-wrong);border-color:var(--color-wrong)}.attempt-row.skipped{background:var(--color-skipped);border-color:var(--color-skipped)}.instructions{text-align:center;color:var(--text-dim);margin-bottom:10px;font-size:14px}.instructions .arrow{font-size:20px}.instructions .meta{color:var(--text-main);margin-top:8px;font-size:.85rem}.player-section{text-align:center;width:100%}.progress-bar-container{background:var(--color-empty);border-radius:6px;width:100%;height:12px;margin-bottom:20px;overflow:hidden}.progress-bar-fill{background:var(--primary-color);width:0%;height:100%;transition:width .25s}.player-controls{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.play-button{cursor:pointer;background-color:#fff;border:none;border-radius:50%;justify-content:center;align-items:center;width:52px;height:52px;transition:transform .1s;display:flex}.play-button:active{transform:scale(.95)}.play-button svg{fill:#0f172a;width:24px}.play-button:disabled{opacity:.5;cursor:not-allowed}.time{font-size:14px;font-weight:700}.input-container{flex-direction:column;gap:15px;width:100%;display:flex}.search-container{position:relative}.search-input{background:var(--surface-color);border:1px solid var(--color-empty);color:#fff;border-radius:8px;outline:none;width:100%;padding:15px 15px 15px 40px}.search-input:focus{border-color:var(--primary-color)}.search-icon{color:var(--text-dim);position:absolute;top:12px;left:12px}.autocomplete-list{background:var(--surface-color);border:1px solid var(--color-empty);z-index:20;border-radius:8px;max-height:240px;position:absolute;top:calc(100% + 4px);left:0;right:0;overflow-y:auto}.autocomplete-item{text-align:left;cursor:pointer;width:100%;color:var(--text-main);background:0 0;border:none;border-bottom:1px solid #94a3b833;padding:12px}.autocomplete-item:last-child{border-bottom:none}.autocomplete-item:hover{background:#ffffff0f}.actions{justify-content:space-between;gap:10px;display:flex}.skip-btn,.btn-main{cursor:pointer;text-transform:uppercase;border:none;border-radius:8px;padding:15px;font-weight:700}.skip-btn{background-color:var(--surface-color);color:#fff;flex-grow:1}.btn-main{background:var(--primary-color);color:#fff;min-width:120px}.skip-btn:disabled,.btn-main:disabled{opacity:.5;cursor:not-allowed}.hu-result{text-align:center;border-radius:8px;margin-top:14px;padding:12px;font-weight:700}.hu-result.success{background:#22c55e29;border:1px solid #22c55e66}.hu-result.failure{background:#ef444429;border:1px solid #ef444466}.hu-footer{color:var(--text-dim);justify-content:center;gap:30px;padding:20px;display:flex}.hu-footer button{cursor:pointer;color:var(--text-dim);background:0 0;border:none;font-size:20px}.hu-footer button:hover{color:var(--text-main)}.ad-rail{display:none}.youtube-player{opacity:0;pointer-events:none;width:1px;height:1px;position:fixed;top:-9999px;left:-9999px}@media (max-width:540px){body{padding:16px}.actions{flex-direction:column}}@media (min-width:1024px){.ad-rail{width:160px;height:600px;color:var(--text-dim);background:#ffffff0d;border-radius:8px;justify-content:center;align-items:center;font-size:.7rem;display:flex;position:fixed;top:100px}.ad-left{left:20px}.ad-right{right:20px}}