:root{font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5;font-weight:400;color-scheme:dark;color:#e6ebf5;background-color:#0a0d14;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html,body{margin:0;padding:0;min-height:100vh;background-color:#0a0d14}#root{min-height:100vh}a{color:var(--accent-color);text-decoration:none}button{font-family:inherit;touch-action:manipulation;-webkit-tap-highlight-color:transparent}select,input[type=range],input[type=text]{touch-action:manipulation;-webkit-tap-highlight-color:transparent}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#2a3142;border-radius:999px;border:2px solid 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#4caf50cc}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}:root{--bg-primary: #0a0d14;--bg-secondary: #11151f;--bg-tertiary: #171c2a;--bg-hover: #1d2334;--bg-elevated: #1b2233;--border-color: #232b3d;--border-strong: #2f3a52;--text-primary: #e6ebf5;--text-secondary: #96a2bd;--text-muted: #6b7690;--accent-color: #7c9cff;--accent-color-2: #b06cff;--accent-hover: #92acff;--accent-glow: rgba(124, 156, 255, .14);--accent-gradient: linear-gradient(135deg, #7c9cff 0%, #b06cff 100%);--accent-contrast: #ffffff;--success-color: #34d399;--success-bg: rgba(52, 211, 153, .12);--warning-color: #fbbf24;--warning-bg: rgba(251, 191, 36, .12);--error-color: #f87171;--error-bg: rgba(248, 113, 113, .12);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-pill: 999px;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 4px 16px rgba(0, 0, 0, .35);--shadow-lg: 0 12px 40px 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h1{margin:0;font-size:1.35rem;font-weight:700;letter-spacing:-.02em;color:var(--text-primary)}.app-subtitle{margin:0;font-size:.85rem;color:var(--text-secondary)}.app-header-row{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.app-tabs{display:flex;gap:8px;padding:4px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-pill);width:fit-content;box-shadow:var(--shadow-sm)}.tab-button{display:inline-flex;align-items:center;gap:8px;padding:9px 18px;border:none;background:transparent;color:var(--text-secondary);font-size:.88rem;font-weight:500;border-radius:var(--radius-pill);cursor:pointer;transition:all var(--transition);white-space:nowrap}.tab-button:hover{color:var(--text-primary);background:var(--bg-hover)}.tab-button.active{color:var(--accent-contrast);background:var(--accent-gradient);box-shadow:0 2px 10px #7c9cff59}.tab-icon{font-size:.95rem;line-height:1}.tab-badge{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 6px;border-radius:var(--radius-pill);background:#00000040;font-size:.72rem;font-weight:600}.tab-button:not(.active) .tab-badge{background:var(--bg-tertiary);border:1px solid var(--border-color)}.vocabulary{display:flex;flex-direction:column;gap:16px}.vocab-header{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.vocab-search{max-width:320px}.vocab-list{display:flex;flex-direction:column;gap:10px}.vocab-row{display:flex;align-items:center;gap:16px;padding:14px 16px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:all 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var(--transition)}.vocab-fav:hover,.vocab-delete:hover{background:var(--bg-hover)}.vocab-fav.on{color:#fbbf24;border-color:#fbbf2466}.vocab-delete:hover{color:var(--error-color);border-color:var(--error-color)}.save-vocab-bar{display:flex;align-items:center;gap:10px;margin-top:10px;padding:8px 12px;background:var(--accent-glow);border:1px solid rgba(124,156,255,.35);border-radius:var(--radius-md);font-size:.85rem}.save-vocab-word{font-weight:600;color:var(--accent-color);max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.save-vocab-button{margin-left:auto;padding:7px 14px;border:none;border-radius:var(--radius-pill);background:var(--accent-gradient);color:var(--accent-contrast);font-size:.82rem;font-weight:600;cursor:pointer}.save-vocab-button:disabled{opacity:.6;cursor:default}.search-container{position:relative;max-width:420px}.search-input{width:100%;padding:11px 14px 11px 42px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:.9rem;font-family:inherit;transition:all var(--transition)}.search-input::placeholder{color:var(--text-muted)}.search-input:hover{border-color:var(--border-strong)}.search-input:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 3px var(--accent-glow)}.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--text-muted);pointer-events:none}.lesson-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}.lesson-item{display:flex;align-items:center;gap:14px;padding:16px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);color:var(--text-primary);text-decoration:none;cursor:pointer;transition:all 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svg{width:20px;height:20px}.clear-cache-button{display:inline-flex;align-items:center;gap:7px;padding:11px 16px;background:var(--error-bg);border:1px solid rgba(248,113,113,.35);border-radius:var(--radius-pill);color:var(--error-color);font-size:.82rem;font-weight:500;cursor:pointer;flex-shrink:0;transition:all var(--transition)}.clear-cache-button:hover:not(:disabled){background:#f8717133;border-color:var(--error-color)}.clear-cache-button:disabled{opacity:.55;cursor:not-allowed}.counterpart-button{display:inline-flex;align-items:center;gap:7px;padding:11px 16px;background:var(--accent-glow);border:1px solid rgba(124,156,255,.35);border-radius:var(--radius-pill);color:var(--accent-color);font-size:.82rem;font-weight:600;cursor:pointer;flex-shrink:0;transition:all var(--transition)}.counterpart-button:hover{background:#7c9cff33;border-color:var(--accent-color);color:var(--accent-color-2)}.download-button{display:inline-flex;align-items:center;gap:7px;padding:11px 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var(--border-color);border-radius:var(--radius-lg);background:var(--bg-secondary);overflow:hidden}.track-list-header{display:flex;align-items:center;gap:14px;padding:10px 18px;border-bottom:1px solid var(--border-color);font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted)}.track-list-col:first-child{width:36px;flex-shrink:0;text-align:center}.track-list-col:last-child{margin-left:auto}.track-row{display:flex;align-items:center;gap:14px;padding:12px 18px;cursor:pointer;border:none;border-bottom:1px solid rgba(35,43,61,.5);background:transparent;color:var(--text-secondary);text-align:left;transition:background 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2px}.track-detail-label{font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted)}.eq{display:inline-flex;gap:2px;align-items:flex-end;height:12px}.eq span{width:3px;border-radius:2px;background:var(--accent-color);animation:eq 1s ease-in-out infinite}.eq span:nth-child(1){height:6px;animation-delay:0s}.eq span:nth-child(2){height:12px;animation-delay:.2s}.eq span:nth-child(3){height:9px;animation-delay:.4s}.track-type{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--radius-pill);background:var(--accent-glow);border:1px solid rgba(124,156,255,.25);color:var(--accent-color);font-weight:600;font-size:.72rem;letter-spacing:.02em;text-transform:uppercase}.player-bar{position:fixed;left:0;right:0;bottom:0;z-index:var(--z-player-bar);background:#0d111aeb;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-top:1px solid var(--border-strong);box-shadow:0 -10px 32px #00000080;padding-bottom:env(safe-area-inset-bottom,0px)}.player-bar-progress{height:6px}.player-bar-progress .timeline{display:block;width:100%;height:6px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:#ffffff24;cursor:pointer;border:none;border-radius:0;margin:0}.player-bar-progress .timeline::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent-contrast);border:none;opacity:0;transition:opacity var(--transition)}.player-bar-progress .timeline:hover::-webkit-slider-thumb,.player-bar-progress .timeline:focus-visible::-webkit-slider-thumb{opacity:1}.player-bar-progress .timeline::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--accent-contrast);border:none;opacity:0;transition:opacity var(--transition)}.player-bar-progress .timeline:hover::-moz-range-thumb{opacity:1}.player-bar-progress .timeline::-moz-range-track{background:transparent;height:6px}.player-bar-progress .timeline:focus-visible{outline:none}.player-bar-main{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);grid-template-areas:"track center actions";align-items:center;gap:20px;max-width:1400px;margin:0 auto;padding:12px 20px;height:88px}.player-track{grid-area:track;display:flex;align-items:center;gap:14px;min-width:0}.player-track .cover-art{width:56px;height:56px;border-radius:var(--radius-md)}.player-track-text{display:flex;flex-direction:column;gap:2px;min-width:0}.player-track-title{font-size:.88rem;font-weight:600;color:var(--text-primary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.player-track-subtitle{font-size:.74rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.player-track-position{font-size:.68rem;color:var(--text-muted)}.player-track-upnext{font-size:.68rem;font-weight:600;color:var(--accent-color)}.player-center{grid-area:center;display:flex;flex-direction:column;align-items:center;gap:4px;min-width:320px}.player-buttons{display:flex;align-items:center;gap:6px}.player-btn{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:none;background:transparent;color:var(--text-secondary);border-radius:50%;cursor:pointer;transition:all var(--transition)}.player-btn:hover:not(:disabled){color:var(--text-primary)}.player-btn:disabled{opacity:.35;cursor:not-allowed}.player-btn svg{width:18px;height:18px}.player-btn-play{width:42px;height:42px;background:var(--accent-contrast);color:#000;box-shadow:var(--shadow-md)}.player-btn-play:hover:not(:disabled){background:#fff;transform:scale(1.06);color:#000}.player-btn-play:active{transform:scale(.95)}.player-btn-play svg{width:20px;height:20px}.player-btn-play.paused svg{margin-left:2px}.player-times{display:flex;justify-content:space-between;width:100%;font-size:.68rem;color:var(--text-muted);font-variant-numeric:tabular-nums;-webkit-user-select:none;user-select:none}.player-actions{grid-area:actions;display:flex;align-items:center;justify-content:flex-end;gap:12px;min-width:0}.autoplay-group{display:flex;align-items:center;gap:6px}.autoplay-toggle{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-pill);color:var(--text-muted);font-size:.72rem;font-weight:600;cursor:pointer;transition:all var(--transition);white-space:nowrap}.autoplay-toggle svg{width:14px;height:14px}.autoplay-toggle:hover{color:var(--text-primary);border-color:var(--border-strong)}.autoplay-toggle.on{color:var(--accent-color);border-color:#7c9cff66;background:var(--accent-glow)}.autoplay-dot{width:8px;height:8px;border-radius:50%;background:var(--text-muted);transition:background var(--transition),box-shadow var(--transition)}.autoplay-dot.on{background:var(--success-color);box-shadow:0 0 8px #34d399cc}.delay-select{padding:5px 8px;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-pill);color:var(--text-secondary);font-size:.72rem;font-weight:600;font-variant-numeric:tabular-nums;cursor:pointer;transition:all var(--transition)}.delay-select:hover{color:var(--text-primary);border-color:var(--border-strong)}.volume-group{display:flex;align-items:center;gap:6px}.volume-btn{width:30px;height:30px}.volume-input{width:90px;-webkit-appearance:none;-moz-appearance:none;appearance:none;height:4px;border-radius:var(--radius-pill);background:#fff3;cursor:pointer}.volume-input::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:12px;height:12px;border-radius:50%;background:#fff;border:none}.volume-input::-moz-range-thumb{width:12px;height:12px;border-radius:50%;background:#fff;border:none}.volume-input::-moz-range-track{background:#fff3;height:4px;border-radius:var(--radius-pill)}.speed-select{padding:6px 12px;background:transparent;border:1px solid var(--border-color);border-radius:var(--radius-pill);color:var(--text-secondary);font-size:.75rem;font-weight:600;font-variant-numeric:tabular-nums;cursor:pointer;transition:all var(--transition)}.speed-select:hover{color:var(--text-primary);border-color:var(--border-strong)}.queue-btn.active{color:var(--accent-color);background:var(--accent-glow)}.audio-file{display:flex;flex-direction:column;gap:18px}.transcription{padding:20px 22px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg);font-family:Noto Sans JP,sans-serif;font-size:1rem;line-height:1.9;white-space:pre-wrap;word-break:break-word;color:var(--text-primary);box-shadow:var(--shadow-sm)}.transcription-error{padding:18px 22px;background:var(--error-bg);border:1px solid rgba(248,113,113,.3);border-radius:var(--radius-lg)}.transcription-warning{display:flex;align-items:flex-start;gap:10px;padding:12px 16px;background:var(--warning-bg);border:1px solid rgba(251,191,36,.3);border-radius:var(--radius-md);color:var(--warning-color);font-size:.85rem}.error-message{margin:0;color:var(--error-color);font-size:.9rem}.error-banner{display:flex;align-items:flex-start;gap:8px;padding:10px 14px;background:var(--error-bg);border:1px solid rgba(248,113,113,.3);border-radius:var(--radius-md);color:var(--error-color);font-size:.85rem;margin-bottom:10px}.cached-note{font-size:.82rem;color:var(--text-secondary);font-style:italic;margin-top:8px}.tools-notice{padding:12px 16px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);text-align:center;font-size:.85rem;color:var(--text-secondary);margin-bottom:12px}.tools-warning{padding:10px 14px;background:var(--warning-bg);border:1px solid rgba(251,191,36,.3);border-radius:var(--radius-md);color:var(--warning-color);font-size:.85rem;margin-bottom:12px}.prompts-container{display:flex;flex-direction:column;gap:14px}.main-prompts{display:flex;flex-wrap:wrap;gap:8px}.prompt-button{display:inline-flex;align-items:center;gap:7px;padding:9px 16px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-primary);font-size:.85rem;font-weight:500;cursor:pointer;transition:all var(--transition)}.prompt-button:hover{border-color:var(--accent-color);background:var(--accent-glow);color:var(--accent-color)}.prompt-button:disabled{opacity:.5;cursor:not-allowed}.prompt-section{display:flex;flex-direction:column;gap:10px;padding:18px 20px;background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--radius-lg)}.prompt-result{font-family:Noto Sans JP,sans-serif;font-size:.95rem;line-height:1.8;white-space:pre-wrap;word-break:break-word;color:var(--text-primary)}.main-result{padding:16px 18px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);border-left:3px solid var(--accent-color)}.prompt-error{padding:12px 16px;background:var(--error-bg);border:1px solid rgba(248,113,113,.3);border-radius:var(--radius-md);color:var(--error-color);font-size:.85rem}.optional-tools-container{display:flex;flex-direction:column;gap:12px}.expand-button{display:inline-flex;align-items:center;gap:7px;align-self:flex-start;padding:8px 14px;background:transparent;border:1px dashed var(--border-strong);border-radius:var(--radius-md);color:var(--text-secondary);font-size:.82rem;font-weight:500;cursor:pointer;transition:all var(--transition)}.expand-button:hover{color:var(--accent-color);border-color:var(--accent-color);background:var(--accent-glow)}.expand-button .chevron{transition:transform var(--transition)}.expand-button.open .chevron{transform:rotate(180deg)}.in-text-prompts-container{display:flex;flex-direction:column;gap:12px}.in-text-prompts-header{display:flex;align-items:center;justify-content:space-between;gap:10px}.in-text-prompts-header h3{margin:0;font-size:.9rem;font-weight:600;color:var(--text-primary)}.close-button{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;background:var(--bg-tertiary);border-radius:50%;color:var(--text-secondary);font-size:.9rem;cursor:pointer;transition:all var(--transition)}.close-button:hover{color:var(--text-primary);background:var(--bg-hover)}.in-text-prompts-buttons{display:flex;flex-wrap:wrap;gap:8px}.in-text-prompt-button{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-secondary);font-size:.8rem;cursor:pointer;transition:all var(--transition)}.in-text-prompt-button:hover{color:var(--accent-color);border-color:#7c9cff66;background:var(--accent-glow)}.in-text-prompt-result{padding:14px 16px;background:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--radius-md);font-family:Noto Sans JP,sans-serif;font-size:.9rem;line-height:1.8;white-space:pre-wrap;word-break:break-word;color:var(--text-primary);border-left:3px solid var(--accent-color-2)}.marugoto-library{display:flex;flex-direction:column;gap:10px}.collection-node{border:1px solid var(--border-color);border-radius:var(--radius-lg);background:var(--bg-secondary);overflow:hidden;transition:all var(--transition)}.collection-node:hover{border-color:var(--border-strong);box-shadow:var(--shadow-md);transform:translateY(-1px)}.collection-node.level{margin-bottom:8px}.collection-toggle{display:flex;align-items:center;gap:12px;width:100%;padding:14px 16px;background:transparent;border:none;color:var(--text-primary);cursor:pointer;text-align:left;transition:background var(--transition)}.collection-toggle:hover{background:var(--bg-hover)}.collection-arrow{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;color:var(--text-muted);transition:transform var(--transition);flex-shrink:0;font-size:.75rem}.collection-node.open .collection-toggle{border-bottom:1px solid var(--border-color)}.collection-node.open .collection-arrow{color:var(--accent-color)}.collection-name{font-size:.92rem;font-weight:600;color:var(--text-primary);min-width:0}.collection-meta{margin-left:auto;display:inline-flex;align-items:center;gap:6px;flex-shrink:0}.level-badge{display:inline-flex;align-items:center;padding:3px 9px;border-radius:var(--radius-pill);font-size:.68rem;font-weight:700;letter-spacing:.04em;background:var(--accent-glow);color:var(--accent-color);border:1px solid rgba(124,156,255,.25)}.book-badge{display:inline-flex;align-items:center;padding:3px 9px;border-radius:var(--radius-pill);font-size:.68rem;font-weight:600;background:var(--bg-tertiary);color:var(--text-secondary);border:1px solid var(--border-color)}.lesson-count-badge{display:inline-flex;align-items:center;padding:3px 9px;border-radius:var(--radius-pill);font-size:.68rem;font-weight:600;background:var(--bg-tertiary);color:var(--text-muted);border:1px solid var(--border-color)}.collection-content{background:var(--bg-primary);padding:12px;animation:fadeInDown .18s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;gap:8px}.marugoto-lesson-item{margin-bottom:0}.marugoto-lesson-item.active{border-color:var(--accent-color);background:var(--accent-glow);box-shadow:0 0 0 1px var(--accent-color)}.keyboard-shortcuts{display:flex;flex-wrap:wrap;gap:12px;padding:12px 16px;background:var(--bg-secondary);border:1px dashed var(--border-color);border-radius:var(--radius-md);font-size:.76rem;color:var(--text-muted)}.shortcut{display:inline-flex;align-items:center;gap:5px}.shortcut kbd{display:inline-flex;align-items:center;justify-content:center;min-width:22px;padding:2px 6px;background:var(--bg-tertiary);border:1px solid var(--border-strong);border-bottom-width:2px;border-radius:5px;font-family:inherit;font-size:.7rem;font-weight:600;color:var(--text-secondary)}@media (max-width: 640px){.container{padding:20px 16px 132px}.app-header{gap:14px}.app-header-row{flex-direction:column;align-items:stretch}.app-tabs{width:100%}.tab-button{flex:1;justify-content:center;padding:12px}.search-container{max-width:none;width:100%}.search-input{padding:13px 14px 13px 42px}.lesson-list{grid-template-columns:1fr}.lesson-item{padding:18px 16px}.lesson-number{width:48px;height:48px}.clear-cache-button{align-self:flex-start;padding:12px 16px}.album-header{flex-direction:column;align-items:flex-start;gap:18px;padding:22px}.lesson-body{grid-template-columns:1fr;gap:14px}.album-cover .cover-art{width:132px;height:132px}.album-cover .cover-art-label{font-size:2.2rem}.album-title{font-size:1.45rem}.album-actions{width:100%}.play-all-btn,.clear-cache-button,.download-button{flex:1;justify-content:center;padding:14px 18px}.track-row{padding:14px}.track-name{gap:8px}.player-bar-main{grid-template-columns:minmax(0,1fr) auto;grid-template-areas:"track actions" "center center";gap:8px 14px;padding:10px 14px;height:auto}.player-track .cover-art{width:48px;height:48px}.player-track-position{display:none}.player-center{min-width:0;width:100%}.player-buttons{gap:10px}.player-btn{width:44px;height:44px}.player-btn svg{width:20px;height:20px}.player-btn-play{width:54px;height:54px}.player-btn-play svg{width:24px;height:24px}.volume-btn{width:40px;height:40px}.volume-input{width:72px}.player-actions{gap:8px}.autoplay-label{display:none}.autoplay-toggle{padding:8px 10px}.speed-select{padding:10px 12px;font-size:.85rem}.transcription,.prompt-section,.main-result,.in-text-prompt-result{padding:16px}.expand-button{padding:12px 16px}.prompt-button{flex:1;justify-content:center;padding:12px 16px}.back-button{padding:12px 16px}}@media (max-width: 400px){.container{padding:16px 12px 150px}.app-brand h1{font-size:1.2rem}.app-logo{width:40px;height:40px}.volume-input{display:none}.album-cover .cover-art{width:112px;height:112px}}