*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0a0a0f;--bg-section: #111118;--border: #1a1a25;--text: #e0e0e8;--text-dim: #666680;--accent: #00ffaa;--accent-stop: #ff00aa;--accent-glow: rgba(0, 255, 170, .15);--radius: 8px;--font-2xs: .6rem;--font-xs: .7rem;--font-sm: .8rem;--font-md: .875rem;--font-lg: 1rem;--font-xl: 1.25rem;--font-2xl: 1.4rem;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--radius-sm: 4px;--radius-lg: 12px;--radius-pill: 20px;--transition-fast: .15s;--transition-base: .2s;--transition-slow: 1s;--sidenav-width: 72px;--sidenav-width-lg: 200px}html{font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100dvh;-webkit-tap-highlight-color:transparent}#app{max-width:480px;margin:0 auto;padding:16px;padding-bottom:env(safe-area-inset-bottom,16px)}.header{display:flex;align-items:center;justify-content:space-between;padding:12px 0 20px}.header h1{font-size:var(--font-xl);font-weight:700;letter-spacing:.15em;color:var(--accent);text-shadow:0 0 20px var(--accent-glow)}.header-brand{display:flex;flex-direction:column;gap:2px}.header-tagline{font-size:var(--font-2xs);font-weight:400;letter-spacing:.12em;color:var(--text-dim);text-transform:uppercase}.section{background:var(--bg-section);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}.section h2{font-size:.9rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--text-dim);margin-bottom:12px}.transport-bar{background:var(--bg-section);border:1px solid var(--border);border-radius:var(--radius);padding:16px;margin-bottom:12px}.transport-play-btn{width:100%;padding:14px;font-size:1rem;display:flex;align-items:center;justify-content:center;gap:10px}.transport-controls{display:flex;flex-direction:column;gap:8px;margin-top:12px}.collapsible .section-toggle{display:flex;align-items:center;justify-content:space-between;cursor:pointer;-webkit-user-select:none;user-select:none}.collapsible .section-toggle h2{margin-bottom:0}.section-toggle .chevron{font-size:var(--font-2xs);color:var(--text-dim);transition:transform var(--transition-base) ease}.collapsible .section-body{margin-top:12px}.collapsible.collapsed .section-body{display:none}.collapsible.collapsed .chevron{transform:rotate(-90deg)}.subsection{margin-bottom:16px}.subsection:last-child{margin-bottom:0}.subsection-heading{font-size:.9rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);margin-bottom:8px}.section-divider{border:none;border-top:1px solid var(--border);margin:12px 0}.btn-save-profile-inline{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;font-size:.8rem;border-style:dashed;border-radius:var(--radius)}.btn-save-profile-inline:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.btn-save-profile-inline:disabled{opacity:.3;cursor:not-allowed}.btn{border:1px solid var(--border);background:transparent;color:var(--text);border-radius:var(--radius);cursor:pointer;font-family:inherit;font-size:var(--font-md);transition:all var(--transition-fast) ease;-webkit-user-select:none;user-select:none;touch-action:manipulation}.btn:active{transform:scale(.97)}.lang-select{padding:6px 10px;font-size:.75rem;font-weight:600;letter-spacing:.08em;color:var(--accent);background:transparent;border:1px solid var(--accent);border-radius:6px;cursor:pointer;font-family:inherit}.lang-select:hover,.lang-select:focus{background:var(--accent-glow);outline:none}.lang-select option{background:var(--bg);color:var(--text)}.preset-group{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:16px}.btn-preset{padding:8px 10px;font-size:.85rem;font-weight:500;text-align:center;border-radius:var(--radius-pill)}.btn-preset:hover{background:var(--accent-glow);border-color:var(--accent)}.btn-preset.preset-active{border-color:var(--accent);background:var(--accent-glow);color:var(--accent)}.btn-preset-add{border-style:dashed;color:var(--text-dim)}.btn-preset-add:hover:not(:disabled){border-color:var(--accent);color:var(--accent);background:var(--accent-glow)}.btn-preset-add:disabled{opacity:.3;cursor:not-allowed}.custom-preset-group{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.custom-preset-group:empty{display:none}.btn-custom-preset{border-style:dashed;position:relative;max-width:120px;overflow:visible;padding-right:24px}.btn-custom-preset-label{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.custom-preset-delete{position:absolute;top:-6px;right:-6px;z-index:1;width:18px;height:18px;border-radius:50%;border:1px solid var(--border);background:var(--bg-section);color:var(--text-dim);font-size:var(--font-2xs);line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-fast) ease}.btn-custom-preset:hover .custom-preset-delete{opacity:1}.custom-preset-delete:hover{border-color:var(--accent-stop);color:var(--accent-stop)}@media(hover:none){.custom-preset-delete{opacity:1}}.eq-container{display:flex;justify-content:space-between;align-items:flex-end;padding:8px 0 12px;gap:2px}.eq-band{display:flex;flex-direction:column;align-items:center;gap:6px;flex:1}.eq-label{font-size:var(--font-2xs);color:var(--text-dim);white-space:nowrap}.eq-slider{-webkit-appearance:none;appearance:none;writing-mode:vertical-lr;direction:rtl;width:4px;height:150px;background:var(--border);border-radius:2px;outline:none}.eq-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer;border:none;box-shadow:0 0 6px var(--accent-glow)}.eq-slider::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer;border:none}.play-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.noise-btn{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;min-width:100px;flex-shrink:0}.noise-btn .btn-icon{font-size:var(--font-xs);color:var(--accent);transition:color .15s}.noise-btn.active{border-color:var(--accent-stop);background:#ff00aa14}.noise-btn.active .btn-icon{color:var(--accent-stop)}.master-vol{display:flex;align-items:center;gap:8px;flex:1}.vol-label{font-size:var(--font-xs);color:var(--text-dim);min-width:24px;white-space:nowrap}.slider{flex:1;-webkit-appearance:none;appearance:none;height:4px;background:var(--border);border-radius:2px;outline:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent);cursor:pointer;border:none;box-shadow:0 0 6px var(--accent-glow)}.slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--accent);cursor:pointer;border:none}.btn-mic{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;justify-content:center}.btn-mic svg{width:14px;height:14px;flex-shrink:0}.btn-mic.active{border-color:var(--accent);background:var(--accent-glow)}#spectrum{width:100%;height:120px;border-radius:var(--radius);margin-top:12px;background:#0d0d14;display:block}.status{font-size:var(--font-sm);color:var(--text-dim);margin-top:8px;min-height:1.2em}.countdown{animation:pulse 1s ease-in-out infinite;color:var(--accent);font-weight:600;font-variant-numeric:tabular-nums}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}.mode-analyze-row{display:flex;gap:8px;margin-bottom:12px}.mode-analyze-row>.btn{flex:1}.mode-toggle{display:flex;gap:8px;margin-bottom:16px}.btn-mode{flex:1;padding:6px 10px;font-size:var(--font-sm);font-weight:500;text-align:center;border-radius:var(--radius-pill)}.btn-mode:hover{background:var(--accent-glow);border-color:var(--accent)}.btn-mode.mode-active{border-color:var(--accent);background:var(--accent-glow);color:var(--accent)}.strength-row{display:flex;align-items:center;gap:8px;margin-top:12px}.strength-row.hidden{display:none}.strength-label{font-size:var(--font-xs);color:var(--text-dim);white-space:nowrap}.strength-value{font-size:var(--font-xs);color:var(--text);min-width:32px;text-align:right;font-variant-numeric:tabular-nums}.warning{font-size:.75rem;color:#f0a040;margin-top:4px;min-height:1em}.footer{padding:20px 0 8px;font-size:.7rem;line-height:1.6;color:var(--text-dim);margin-top:4px}.footer-about{margin-bottom:12px}.footer-scenarios{display:flex;flex-direction:column;gap:8px;margin-bottom:12px}.footer-scenario{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:10px 12px}.footer-scenario-title{font-size:.75rem;font-weight:600;color:var(--accent);margin-bottom:4px}.footer-scenario-desc{font-size:.7rem;color:var(--text-dim);line-height:1.5}.footer-copyright{margin-top:16px;text-align:center;font-size:var(--font-xs);color:var(--text-dim)}.transfer-section{margin-top:20px;padding-top:16px}.transfer-desc{font-size:var(--font-xs);color:var(--text-dim);line-height:1.5;margin-bottom:12px}.privacy-section{margin-top:20px;padding-top:16px}.privacy-desc{font-size:var(--font-xs);color:var(--text-dim);line-height:1.5}.transfer-cards{display:flex;flex-direction:column;gap:8px}.transfer-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:12px;display:flex;flex-direction:column;gap:8px}.transfer-card-label{font-size:var(--font-xs);color:var(--text-dim);letter-spacing:.08em;text-transform:uppercase}.transfer-textarea{width:100%;height:60px;padding:8px;background:var(--bg-section);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:.68rem;font-family:monospace;resize:none;word-break:break-all;transition:border-color var(--transition-fast) ease}.transfer-textarea:focus{outline:none;border-color:var(--accent)}.transfer-btn{width:100%;padding:8px 12px;font-size:var(--font-sm);text-align:center}.transfer-btn:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-glow)}.transfer-status{font-size:var(--font-xs);text-align:center;min-height:1.2em;transition:opacity var(--transition-fast) ease}.transfer-status-ok{color:var(--accent)}.transfer-status-error{color:var(--accent-stop)}.footer-heading{font-size:.9rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--text-dim);margin-top:20px;margin-bottom:10px}.footer-modes{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;align-items:start;margin-bottom:4px}.footer-mode{display:contents}.footer-mode dt{color:var(--accent);letter-spacing:.03em;white-space:nowrap}.footer-mode dd{margin:0}.binaural-presets{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:12px}.btn-binaural{padding:6px 10px;font-size:var(--font-sm);font-weight:500;text-align:center;border-radius:var(--radius-pill)}.btn-binaural:hover{background:var(--accent-glow);border-color:var(--accent)}.btn-binaural.binaural-active{border-color:var(--accent);background:var(--accent-glow);color:var(--accent)}.binaural-controls{display:flex;align-items:center;gap:8px;margin-bottom:8px}.binaural-label{font-size:var(--font-xs);color:var(--text-dim);white-space:nowrap}.binaural-hint{font-size:var(--font-xs);color:var(--text-dim);font-style:italic}.binaural-toggle{position:relative;display:inline-block;width:36px;height:20px;flex-shrink:0}.binaural-toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;cursor:pointer;inset:0;background:var(--border);border-radius:20px;transition:var(--transition-base)}.toggle-slider:before{content:"";position:absolute;height:14px;width:14px;left:3px;bottom:3px;background:var(--text-dim);border-radius:50%;transition:var(--transition-base)}.binaural-toggle input:checked+.toggle-slider{background:var(--accent)}.binaural-toggle input:checked+.toggle-slider:before{background:var(--bg);transform:translate(16px)}.timer-row{display:flex;align-items:center;gap:8px;margin-top:12px;flex-wrap:wrap}.timer-label{font-size:var(--font-xs);color:var(--text-dim);white-space:nowrap}.timer-buttons{display:flex;gap:4px}.btn-timer{padding:4px 8px;font-size:var(--font-xs);border-radius:var(--radius-lg)}.btn-timer:hover{background:var(--accent-glow);border-color:var(--accent)}.btn-timer.timer-active{border-color:var(--accent);background:var(--accent-glow);color:var(--accent)}.timer-display{font-size:var(--font-sm);color:var(--accent);font-variant-numeric:tabular-nums;font-weight:600;min-width:48px}.profile-list{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.profile-list:empty{display:none}.btn-profile{border-style:dashed;position:relative;max-width:140px;overflow:visible;padding:6px 24px 6px 10px;font-size:var(--font-sm);border-radius:var(--radius-pill)}.btn-profile-label{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile-delete{position:absolute;top:-6px;right:-6px;z-index:1;width:18px;height:18px;border-radius:50%;border:1px solid var(--border);background:var(--bg-section);color:var(--text-dim);font-size:var(--font-2xs);line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity var(--transition-fast) ease}.btn-profile:hover .profile-delete{opacity:1}.profile-delete:hover{border-color:var(--accent-stop);color:var(--accent-stop)}@media(hover:none){.profile-delete{opacity:1}}.section>.btn-save-profile{display:flex;align-items:center;gap:6px;padding:6px 12px;font-size:var(--font-sm);width:100%;justify-content:center;border-style:dashed;border-radius:var(--radius)}.section>.btn-save-profile:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.section>.btn-save-profile:disabled{opacity:.3;cursor:not-allowed}.pomodoro-settings{display:grid;grid-template-columns:1fr 1fr;gap:6px 12px;margin-bottom:12px}.pomo-setting{display:flex;flex-direction:column;align-items:flex-start;gap:3px;font-size:.75rem;color:var(--text-dim)}.pomo-input{width:44px;padding:2px 4px;font-size:.75rem;font-family:inherit;color:var(--text);background:var(--bg);border:1px solid var(--border);border-radius:4px;text-align:center}.pomo-input:focus{border-color:var(--accent);outline:none}.pomo-input:disabled{opacity:.4;cursor:not-allowed}.pomodoro-controls{display:flex;align-items:center;gap:12px;margin-bottom:8px}.btn-pomodoro{padding:6px 16px;border-radius:var(--radius-pill);font-size:var(--font-sm)}.pomodoro-phase{font-size:var(--font-sm);color:var(--accent);font-weight:600}.pomodoro-time{font-size:1.1rem;color:var(--text);font-variant-numeric:tabular-nums;font-weight:600}.pomodoro-cycle{font-size:var(--font-xs);color:var(--text-dim)}.pomodoro-progress{height:4px;background:var(--border);border-radius:2px;overflow:hidden}.pomodoro-bar{height:100%;width:0%;background:var(--accent);border-radius:2px;transition:width var(--transition-slow) linear}.pomodoro-bar.pomodoro-bar-break{background:#6bf}@media(max-width:767px){.nav-tab[data-target=about]{order:1}.nav-tab[data-target=profile]{order:2}.nav-play-btn{order:3}.nav-tab[data-target=timer]{order:4}.nav-tab[data-target=sound]{order:5}}@media(max-width:360px){.eq-slider{height:110px}.eq-label{font-size:.5rem}}html,body{height:100dvh;overflow:hidden}#app{display:flex;flex-direction:column;height:100dvh;padding:0;overflow:hidden;position:relative}.nav-vol{position:fixed;top:0;left:0;right:0;display:flex;align-items:center;gap:8px;padding:6px 16px;background:#0a0a0feb;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--border);z-index:101}.nav-vol .slider{flex:1}.about-brand{margin-bottom:12px}.nav-brand{display:none;flex-direction:column;align-items:center;gap:var(--space-1);padding:var(--space-3) var(--space-2);border-bottom:1px solid var(--border);width:100%;order:-4}.nav-brand h1{font-size:var(--font-md);font-weight:700;letter-spacing:.1em;color:var(--accent);text-transform:uppercase}.nav-tagline{font-size:var(--font-xs);color:var(--text-dim);text-align:center;letter-spacing:.04em}.nav-lang{display:none;align-items:center;justify-content:center;padding:var(--space-1) var(--space-2);border-bottom:1px solid var(--border);width:100%;order:-3}.about-brand-header{display:flex;align-items:center;justify-content:space-between}.about-brand h1{font-size:var(--font-2xl);font-weight:700;letter-spacing:.1em;color:var(--accent);text-shadow:0 0 20px var(--accent-glow)}.about-brand .header-tagline{font-size:var(--font-2xs);font-weight:400;letter-spacing:.12em;color:var(--text-dim);text-transform:uppercase;margin-top:2px}.tab-pages-container{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-top:36px;padding-bottom:calc(108px + env(safe-area-inset-bottom,0px))}.tab-page{display:none;padding:16px}.tab-page.tab-active{display:block}.bottom-nav{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:480px;height:calc(56px + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);background:var(--bg-section);border-top:1px solid var(--border);display:flex;align-items:center;justify-content:space-around;z-index:100}.nav-tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 4px;cursor:pointer;position:relative;background:transparent;border:none;color:var(--text-dim);font-family:inherit;touch-action:manipulation}.nav-tab:before{content:"";position:absolute;top:0;left:20%;right:20%;height:2px;background:transparent;border-radius:0 0 2px 2px}.nav-tab.tab-active:before{background:var(--accent)}.nav-tab-icon{line-height:1;display:flex;align-items:center;justify-content:center}.nav-tab-icon svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.nav-tab-label{font-size:var(--font-2xs);font-weight:600;letter-spacing:.05em;text-transform:uppercase;transition:color .15s}.nav-tab.tab-active .nav-tab-label,.nav-tab.tab-active .nav-tab-icon{color:var(--accent)}.nav-play-btn{flex:0 0 52px;width:52px;height:52px;border-radius:50%;border:2px solid var(--accent);background:var(--bg);color:var(--accent);cursor:pointer;box-shadow:0 0 12px var(--accent-glow);margin-top:-10px;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast) ease;font-family:inherit;touch-action:manipulation}.nav-play-btn svg{width:22px;height:22px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.icon-stop{display:none}.nav-play-btn:active{transform:scale(.95)}.nav-play-btn.active{border-color:var(--accent-stop);color:var(--accent-stop);box-shadow:0 0 12px #ff00aa40}.nav-badge{position:absolute;top:6px;right:calc(50% - 16px);width:6px;height:6px;border-radius:50%;background:var(--accent);display:none}.nav-badge.visible{display:block}.modal-backdrop{display:none;position:fixed;inset:0;background:#000000b3;z-index:200;align-items:center;justify-content:center}.modal-backdrop.modal-open{display:flex}.modal-card{background:var(--bg-section);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;width:calc(100% - 48px);max-width:360px}.modal-label{font-size:var(--font-sm);color:var(--text-dim);margin-bottom:12px}.modal-input{width:100%;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-family:inherit;font-size:.9rem;padding:8px 10px;outline:none;margin-bottom:16px}.modal-input:focus{border-color:var(--accent)}.modal-actions{display:flex;gap:8px;justify-content:flex-end}.btn-modal-save{border-color:var(--accent);color:var(--accent);padding:6px 16px}.btn-modal-save:hover{background:var(--accent-glow)}@media(min-width:768px){#app{display:grid;grid-template-columns:var(--sidenav-width) 1fr;grid-template-rows:auto 1fr;grid-template-areas:"nav vol-bar" "nav content";max-width:none;height:100dvh}.nav-brand,.nav-lang{display:flex}.about-brand-header{display:none}.nav-tab[data-target=sound]{margin-top:auto}.nav-vol{grid-area:vol-bar;position:static;inset:auto;width:auto;flex-direction:row;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-3);border-top:none;border-right:none;border-bottom:1px solid var(--border);background:transparent;z-index:auto}.nav-vol .vol-label{display:inline}.nav-vol .slider{writing-mode:initial;direction:initial;width:auto;height:4px;flex:1}.tab-pages-container{grid-area:content;padding-top:0;padding-bottom:var(--space-4)}.bottom-nav{grid-area:nav;position:static;transform:none;left:auto;bottom:auto;flex-direction:column;justify-content:flex-start;align-items:center;width:100%;height:100%;max-width:none;border-top:none;border-right:1px solid var(--border);padding-top:0;padding-bottom:var(--space-3);gap:var(--space-1)}.nav-tab{flex:0 0 auto;width:100%;padding:var(--space-2) var(--space-1)}.nav-tab:before{inset:15% auto 15% 0;width:2px;height:auto;border-radius:0 2px 2px 0}.nav-tab.tab-active:before{background:var(--accent)}.nav-play-btn{order:2;margin-top:0;margin-bottom:0;width:48px;height:48px}.tab-page{max-width:600px;margin:0 auto}}@media(min-width:1024px){#app{grid-template-columns:var(--sidenav-width-lg) 1fr}.nav-brand{align-items:flex-start;padding:var(--space-3) var(--space-3);border-bottom:none}.nav-brand h1{font-size:var(--font-xl)}.nav-tagline{font-size:var(--font-sm);text-align:left}.nav-lang{order:0;margin-top:auto;padding:var(--space-2) var(--space-3);justify-content:flex-start;border-bottom:none;border-top:1px solid var(--border)}.nav-lang .lang-select{width:100%}.nav-tab[data-target=sound]{margin-top:0}.about-brand{display:none}.bottom-nav{justify-content:flex-start;align-items:stretch;padding:0 var(--space-2) var(--space-3)}.nav-tab{flex-direction:row;justify-content:flex-start;gap:var(--space-2);padding:var(--space-2) var(--space-3)}.nav-tab-label{font-size:var(--font-xs);text-transform:none;letter-spacing:0;opacity:1}.nav-play-btn{width:100%;border-radius:var(--radius-lg);height:44px}.tab-page{max-width:720px}.eq-slider{height:180px}.pomodoro-settings{grid-template-columns:repeat(4,1fr)}.section h2{font-size:var(--font-md)}}@media(min-width:768px)and (max-width:1023px){.nav-brand,.nav-lang{display:none}.about-brand-header{display:flex}}