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.75rem;border-radius:.875rem;cursor:pointer;transition:all .2s ease;color:var(--text-muted);font-size:.6875rem;font-weight:500;min-width:64px;position:relative}.nav-item:hover{color:var(--text-secondary);background:var(--bg-tertiary)}.nav-item.active{color:var(--text-primary);background:var(--surface-active)}.nav-item.active svg{color:var(--text-primary)}.nav-safe-area{padding-bottom:env(safe-area-inset-bottom,0px)}.nav-dot-indicator{animation:dotIn .3s ease-out}@keyframes dotIn{0%{opacity:0;transform:scaleX(0)}to{opacity:1;transform:scaleX(1)}}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.page-transition{animation:fadeIn .3s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.badge-card{position:relative;display:flex;flex-direction:column;align-items:center;gap:.5rem;padding:1rem;border-radius:1rem;transition:all .2s ease}.badge-card.earned{background:var(--glass-bg);border:1px solid var(--border-color)}.badge-card.locked{background:var(--bg-tertiary);opacity:.5;filter:grayscale(.7)}.toast{position:fixed;bottom:5rem;left:50%;transform:translate(-50%);background:var(--surface-elevated);color:var(--text-primary);border:1px solid var(--border-color);padding:.875rem 1.5rem;border-radius:1rem;font-weight:600;font-size:.875rem;z-index:1000;animation:toastIn .4s cubic-bezier(.34,1.56,.64,1)}@keyframes toastIn{0%{opacity:0;transform:translate(-50%) translateY(20px) scale(.9)}to{opacity:1;transform:translate(-50%) translateY(0) scale(1)}}.stat-card{background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:1.25rem;padding:1.25rem;transition:transform .2s ease,box-shadow .2s ease}.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.sound-card{display:flex;flex-direction:column;align-items:center;gap:.75rem;padding:1.25rem 1rem;border-radius:1.25rem;border:1.5px solid var(--border-color);background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);cursor:pointer;transition:all .25s ease}.sound-card:hover{border-color:var(--border-strong)}.sound-card.active{border-color:var(--text-muted);background:var(--surface-active)}@media (max-width: 768px){.timer-digits{font-size:clamp(3.5rem,15vw,5rem)}}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--text-muted);outline-offset:2px}button,.nav-item,.sound-card,.stat-card,.badge-card{-moz-user-select:none;user-select:none;-webkit-user-select:none}@media (display-mode: standalone){body{padding-top:env(safe-area-inset-top,0px)}}.hover\:border-\[var\(--border-strong\)\]:hover{border-color:var(--border-strong)}.hover\:bg-\[var\(--bg-secondary\)\]:hover{background-color:var(--bg-secondary)}.hover\:bg-\[var\(--bg-tertiary\)\]:hover{background-color:var(--bg-tertiary)}.hover\:bg-\[var\(--surface-active\)\]:hover{background-color:var(--surface-active)}.hover\:bg-red-500\/10:hover{background-color:#ef44441a}.hover\:text-\[var\(--text-primary\)\]:hover{color:var(--text-primary)}.hover\:text-\[var\(--text-secondary\)\]:hover{color:var(--text-secondary)}.hover\:text-red-300:hover{--tw-text-opacity: 1;color:rgb(252 165 165 / var(--tw-text-opacity, 1))}.hover\:text-red-400:hover{--tw-text-opacity: 1;color:rgb(248 113 113 / var(--tw-text-opacity, 1))}.hover\:opacity-90:hover{opacity:.9}.focus\:border-\[var\(--border-strong\)\]:focus{border-color:var(--border-strong)}.focus\:outline-none:focus{outline:2px solid transparent;outline-offset:2px}.disabled\:pointer-events-none:disabled{pointer-events:none}.disabled\:opacity-30:disabled{opacity:.3}.disabled\:opacity-35:disabled{opacity:.35}.disabled\:opacity-60:disabled{opacity:.6}@media (min-width: 640px){.sm\:flex-row{flex-direction:row}.sm\:items-center{align-items:center}.sm\:text-6xl{font-size:3.75rem;line-height:1}}