:root{--bg-primary: #05050a;--bg-secondary: #0a0a12;--bg-tertiary: #10101a;--bg-card: #12121c;--text-primary: #e8e8f0;--text-secondary: #b0b0c8;--text-muted: #7a7a92;--accent-right: #ff6b6b;--accent-left: #4ecdc4;--accent-primary: #7c6aef;--accent-success: #4ade80;--accent-warning: #fbbf24;--border-color: #1e1e2a;--border-glow: rgba(124, 106, 239, .3);--font-sans: "DM Sans", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "SF Mono", monospace;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 20px;--radius-full: 9999px;--transition-fast: .15s ease;--transition-base: .25s ease;--transition-slow: .4s ease}*{margin:0;padding:0;box-sizing:border-box}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:absolute;top:-100%;left:50%;transform:translate(-50%);background:var(--accent-primary);color:#fff;padding:var(--spacing-md) var(--spacing-xl);border-radius:var(--radius-md);text-decoration:none;font-weight:600;z-index:9999;transition:top .2s ease}.skip-link:focus{top:var(--spacing-md);outline:3px solid var(--accent-left);outline-offset:2px}:focus-visible{outline:3px solid var(--accent-primary);outline-offset:2px}:focus:not(:focus-visible){outline:none}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh}body:before{content:"";position:fixed;inset:0;background:radial-gradient(ellipse at 20% 20%,rgba(124,106,239,.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(78,205,196,.06) 0%,transparent 50%),radial-gradient(ellipse at 50% 50%,rgba(255,107,107,.04) 0%,transparent 70%);pointer-events:none;z-index:-1}#app{max-width:1000px;margin:0 auto;padding:var(--spacing-xl);min-height:100vh}.header{text-align:center;margin-bottom:var(--spacing-2xl);animation:fadeInDown .6s ease}.header__logo{font-size:3rem;margin-bottom:var(--spacing-sm)}.header__title{font-size:2.5rem;font-weight:600;letter-spacing:-.02em;background:linear-gradient(135deg,var(--text-primary) 0%,var(--accent-primary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.header__subtitle{color:var(--text-secondary);font-size:1.1rem;margin-top:var(--spacing-sm)}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:var(--spacing-xl);margin-bottom:var(--spacing-lg);animation:fadeInUp .5s ease}.card--glow{box-shadow:0 0 40px #7c6aef1a}.card__title{font-size:1.25rem;font-weight:500;margin-bottom:var(--spacing-md);display:flex;align-items:center;gap:var(--spacing-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-xl);font-family:var(--font-sans);font-size:1rem;font-weight:500;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base)}.btn--primary{background:var(--accent-primary);color:#fff}.btn--primary:hover{background:#6b5ce0;transform:translateY(-2px);box-shadow:0 8px 24px #7c6aef66}.btn--primary:active{transform:translateY(0)}.btn--secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn--secondary:hover{background:var(--bg-card);border-color:var(--accent-primary)}.btn--large{padding:var(--spacing-lg) var(--spacing-2xl);font-size:1.2rem;border-radius:var(--radius-lg)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.response-buttons{display:flex;gap:var(--spacing-md)}.btn--heard{flex:1;background:linear-gradient(135deg,var(--accent-success),#22c55e);color:#fff;font-size:1.1rem;padding:var(--spacing-lg) var(--spacing-xl);border-radius:var(--radius-lg);transition:all var(--transition-base)}.btn--heard:hover{transform:translateY(-2px);box-shadow:0 8px 24px #4ade8066}.btn--heard:active{transform:translateY(0)}.btn--not-heard{flex:1;background:var(--bg-tertiary);color:var(--text-secondary);font-size:1.1rem;padding:var(--spacing-lg) var(--spacing-xl);border:2px solid var(--border-color);border-radius:var(--radius-lg);transition:all var(--transition-base)}.btn--not-heard:hover{border-color:var(--text-muted);color:var(--text-primary);transform:translateY(-2px)}.btn--not-heard:active{transform:translateY(0)}.test-display{text-align:center;padding:var(--spacing-xl) 0}.test-display__info{display:flex;align-items:center;justify-content:center;gap:var(--spacing-xl);padding-bottom:var(--spacing-lg);margin-bottom:var(--spacing-lg);border-bottom:1px solid var(--border-color)}.test-display__frequency{font-family:var(--font-mono);font-size:2.5rem;font-weight:600;color:var(--accent-primary);line-height:1}.test-display__frequency-unit{font-size:1rem;color:var(--text-muted);margin-left:var(--spacing-xs)}.test-display__ear{font-size:1.1rem;display:flex;align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-md);background:var(--bg-tertiary)}.test-display__ear--right{color:var(--accent-right)}.test-display__ear--left{color:var(--accent-left)}.test-display__level{font-family:var(--font-mono);color:var(--text-muted);margin-top:var(--spacing-sm)}.listening-state{padding:var(--spacing-xl) 0;animation:fadeIn .3s ease}.listening-state__icon{font-size:3rem;margin-bottom:var(--spacing-md);animation:pulse 1.5s ease-in-out infinite}.listening-state__text{font-size:1.5rem;font-weight:500;color:var(--text-primary);margin-top:var(--spacing-lg)}.listening-state__hint{color:var(--text-muted);font-size:.9rem;margin-top:var(--spacing-sm)}.response-state{padding:var(--spacing-lg) 0;animation:fadeIn .3s ease}.response-state__question{font-size:1.5rem;font-weight:500;color:var(--text-primary);margin-bottom:var(--spacing-xl)}.response-state__hint{color:var(--text-muted);font-size:.85rem;margin-top:var(--spacing-lg)}.response-state__hint kbd{display:inline-block;padding:2px 8px;font-family:var(--font-mono);font-size:.8rem;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-sm);margin:0 2px}.sound-wave{display:flex;justify-content:center;align-items:center;gap:4px;height:60px;margin:var(--spacing-xl) 0}.sound-wave__bar{width:6px;background:var(--accent-primary);border-radius:var(--radius-full);animation:soundWave .8s ease-in-out infinite}.sound-wave__bar:nth-child(1){animation-delay:0s;height:20px}.sound-wave__bar:nth-child(2){animation-delay:.1s;height:35px}.sound-wave__bar:nth-child(3){animation-delay:.2s;height:50px}.sound-wave__bar:nth-child(4){animation-delay:.3s;height:35px}.sound-wave__bar:nth-child(5){animation-delay:.4s;height:20px}.progress{background:var(--bg-tertiary);height:8px;border-radius:var(--radius-full);overflow:hidden;margin:var(--spacing-lg) 0}.progress__bar{height:100%;background:linear-gradient(90deg,var(--accent-primary),var(--accent-left));border-radius:var(--radius-full);transition:width var(--transition-base)}.progress__text{font-family:var(--font-mono);font-size:.875rem;color:var(--text-muted);text-align:center;margin-top:var(--spacing-sm)}.audiogram-container{display:flex;justify-content:center;margin:var(--spacing-lg) 0}.summary{background:var(--bg-tertiary);border-radius:var(--radius-md);padding:var(--spacing-lg);font-family:var(--font-mono);font-size:.9rem;line-height:1.8;white-space:pre-line}.instructions{background:var(--bg-tertiary);border-radius:var(--radius-md);padding:var(--spacing-lg);margin:var(--spacing-lg) 0}.instructions__title{font-weight:600;margin-bottom:var(--spacing-md);display:flex;align-items:center;gap:var(--spacing-sm)}.instructions__list{list-style:none;padding:0}.instructions__list li{position:relative;padding-left:var(--spacing-xl);margin-bottom:var(--spacing-sm);color:var(--text-secondary)}.instructions__list li:before{content:"→";position:absolute;left:0;color:var(--accent-primary)}.disclaimer{background:#fbbf241a;border:1px solid rgba(251,191,36,.2);border-radius:var(--radius-md);padding:var(--spacing-md);margin-top:var(--spacing-lg);font-size:.875rem;color:var(--accent-warning)}.screen{animation:fadeIn .4s ease}.footer{text-align:center;margin-top:var(--spacing-2xl);padding-top:var(--spacing-xl);border-top:1px solid var(--border-color);color:var(--text-muted);font-size:.875rem}.footer a{color:var(--accent-primary);text-decoration:none}.footer a:hover{text-decoration:underline}.calibration{text-align:center}.calibration__ear-buttons{display:flex;gap:var(--spacing-md);justify-content:center;margin:var(--spacing-lg) 0}.calibration__tip{color:var(--text-muted);font-size:.9rem;margin-top:var(--spacing-md)}.profiles{margin-top:var(--spacing-xl)}.profiles__list{display:flex;flex-direction:column;gap:var(--spacing-sm)}.profile-item{display:flex;justify-content:space-between;align-items:center;width:100%;padding:var(--spacing-md);background:var(--bg-tertiary);border:1px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast);font-family:var(--font-sans);font-size:1rem;color:var(--text-primary);text-align:left}.profile-item:hover{background:var(--bg-card);border-color:var(--border-color)}.profile-item:focus-visible{outline:3px solid var(--accent-primary);outline-offset:2px}.profile-item__name{font-weight:500}.profile-item__date{font-family:var(--font-mono);font-size:.8rem;color:var(--text-muted)}.profile-checkbox{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--bg-tertiary);border:1px solid transparent;border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast)}.profile-checkbox:hover{background:var(--bg-card);border-color:var(--border-color)}.profile-checkbox:has(input:checked){border-color:var(--accent-primary);background:#7c6aef1a}.profile-checkbox input[type=checkbox]{width:20px;height:20px;accent-color:var(--accent-primary);cursor:pointer}.profile-checkbox input[type=checkbox]:disabled{opacity:.5;cursor:not-allowed}.profile-checkbox__info{display:flex;justify-content:space-between;flex:1}.tinnitus-controls{display:flex;flex-direction:column;gap:var(--spacing-xl);margin:var(--spacing-xl) 0}.tinnitus-slider-group{display:flex;flex-direction:column;gap:var(--spacing-sm)}.tinnitus-label{display:flex;justify-content:space-between;align-items:center;font-weight:500}.tinnitus-value{font-family:var(--font-mono);font-size:1.1rem;color:var(--accent-primary)}.tinnitus-slider{-webkit-appearance:none;appearance:none;width:100%;height:12px;background:var(--bg-tertiary);border-radius:var(--radius-full);outline:none;cursor:pointer}.tinnitus-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:28px;height:28px;background:var(--accent-primary);border-radius:50%;cursor:pointer;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.tinnitus-slider::-webkit-slider-thumb:hover{transform:scale(1.1);box-shadow:0 0 20px #7c6aef80}.tinnitus-slider::-moz-range-thumb{width:28px;height:28px;background:var(--accent-primary);border:none;border-radius:50%;cursor:pointer}.tinnitus-range-labels{display:flex;justify-content:space-between;font-size:.8rem;color:var(--text-muted)}.tinnitus-mode-toggle{display:flex;flex-direction:column;gap:var(--spacing-xs);padding:var(--spacing-md);background:var(--bg-tertiary);border-radius:var(--radius-md)}.toggle-label{display:flex;align-items:center;gap:var(--spacing-sm);cursor:pointer;font-weight:500}.toggle-label input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent-primary)}.tinnitus-play-controls{display:flex;justify-content:center;margin-top:var(--spacing-lg)}.speech-select{width:100%;padding:var(--spacing-md);background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-sans);font-size:1rem;cursor:pointer}.speech-select:focus{outline:3px solid var(--accent-primary);outline-offset:2px}.speech-test-display{text-align:center;padding:var(--spacing-xl) 0}.speech-question{font-size:1.5rem;font-weight:500;margin-bottom:var(--spacing-xl)}.speech-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:var(--spacing-sm);max-width:500px;margin:0 auto}.speech-option{padding:var(--spacing-md)!important;font-size:1.1rem!important;text-transform:capitalize}.speech-option:hover{background:var(--accent-primary)!important;color:#fff!important}.speech-listening{padding:var(--spacing-xl)}.speech-listening__icon{font-size:4rem;animation:pulse 1.5s ease-in-out infinite}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes soundWave{0%,to{transform:scaleY(.3);opacity:.5}50%{transform:scaleY(1);opacity:1}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.text-secondary-lg{color:var(--text-secondary);line-height:1.8}.text-muted-sm{color:var(--text-muted);margin-top:var(--spacing-md);font-size:.9rem}.text-center{text-align:center}.text-secondary{color:var(--text-secondary)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.w-full{width:100%}.flex-1{flex:1}.flex-2{flex:2}.justify-center{justify-content:center}.age-input{width:120px;padding:var(--spacing-md);font-size:1.5rem;text-align:center;background:var(--bg-tertiary);border:2px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-family:var(--font-mono)}.age-input-group{display:flex;justify-content:center;align-items:center;margin:var(--spacing-lg) 0}.age-unit{padding:var(--spacing-md);font-size:1.2rem;color:var(--text-muted)}.btn--right-ear{background:#ff6b6b1a;border-color:var(--accent-right)}.btn--left-ear{background:#4ecdc41a;border-color:var(--accent-left)}.btn__sublabel{display:block;font-size:.75rem;opacity:.8;font-weight:400}.flex-col-gap{display:flex;flex-direction:column;gap:var(--spacing-md)}.flex-buttons{display:flex;gap:var(--spacing-md);flex-wrap:wrap}.flex-buttons>*{flex:1;min-width:200px}.nav-buttons{display:flex;gap:var(--spacing-md);margin-top:var(--spacing-lg)}.error-message{background:#ff6b6b1a;border:1px solid rgba(255,107,107,.3);border-radius:var(--radius-md);padding:var(--spacing-lg);margin:var(--spacing-lg) 0;text-align:center}.error-message__title{color:var(--accent-right);font-size:1.2rem;font-weight:600;margin-bottom:var(--spacing-md)}.error-message__text{color:var(--text-secondary);line-height:1.6}@media(max-width:640px){#app{padding:var(--spacing-md)}.header__title{font-size:2rem}.test-display__frequency{font-size:3rem}.response-buttons{flex-direction:column}.card{padding:var(--spacing-lg)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.sound-wave__bar{animation:none!important;height:30px!important;opacity:.7!important}.listening-state__icon{animation:none!important}}