@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap";:root{--font-sans: "Inter", system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-full: 9999px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .12);--shadow-md: 0 4px 16px rgba(0, 0, 0, .15);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .2);--shadow-glow: 0 0 40px rgba(26, 107, 191, .22);--transition-fast: .15s ease;--transition-normal: .25s ease;--transition-slow: .4s cubic-bezier(.16, 1, .3, 1);--bg-primary: #0c0d12;--bg-secondary: #141520;--bg-card: rgba(22, 24, 36, .75);--bg-card-hover: rgba(30, 33, 50, .85);--bg-input: rgba(22, 24, 36, .9);--bg-badge: rgba(26, 107, 191, .15);--bg-loading: rgba(22, 24, 36, .95);--border-subtle: rgba(255, 255, 255, .06);--border-input: rgba(255, 255, 255, .1);--border-input-focus: rgba(26, 107, 191, .55);--text-primary: #e8e9f0;--text-secondary: #8b8ea3;--text-muted: #5c5f73;--text-accent: #7eb8f7;--text-link: #5aa3f0;--text-link-hover: #7eb8f7;--accent: #1a6bbf;--accent-soft: rgba(26, 107, 191, .2);--meta-bg: rgba(255, 255, 255, .05);--diff-delete-bg: rgba(239, 68, 68, .12);--diff-delete-text: #f87171;--diff-insert-bg: rgba(52, 211, 153, .12);--diff-insert-text: #34d399;--scrollbar-track: transparent;--scrollbar-thumb: rgba(255, 255, 255, .1);--icon-color: #9ca3b0}@media(prefers-color-scheme:light){:root{--bg-primary: #f5f5f8;--bg-secondary: #ffffff;--bg-card: rgba(255, 255, 255, .85);--bg-card-hover: rgba(255, 255, 255, .95);--bg-input: rgba(255, 255, 255, .95);--bg-badge: rgba(0, 53, 128, .09);--bg-loading: rgba(255, 255, 255, .95);--border-subtle: rgba(0, 0, 0, .06);--border-input: rgba(0, 0, 0, .12);--border-input-focus: rgba(0, 53, 128, .45);--text-primary: #1a1b25;--text-secondary: #5c5f73;--text-muted: #8b8ea3;--text-accent: #003580;--text-link: #0047a8;--text-link-hover: #003580;--accent: #003580;--accent-soft: rgba(0, 53, 128, .1);--meta-bg: rgba(0, 0, 0, .04);--diff-delete-bg: rgba(239, 68, 68, .08);--diff-delete-text: #dc2626;--diff-insert-bg: rgba(22, 163, 74, .08);--diff-insert-text: #16a34a;--scrollbar-track: transparent;--scrollbar-thumb: rgba(0, 0, 0, .12);--icon-color: #4b505f;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-md: 0 4px 16px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 32px rgba(0, 0, 0, .1);--shadow-glow: 0 0 40px rgba(0, 53, 128, .12)}}*,*:before,*:after{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{margin:0;font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100dvh;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--scrollbar-track)}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:var(--radius-full)}.app-container{max-width:720px;margin:0 auto;padding:2rem 1.5rem 4rem;position:relative}.ambient-glow{position:fixed;top:-200px;left:50%;transform:translate(-50%);width:600px;height:400px;background:radial-gradient(ellipse,rgba(26,107,191,.1) 0%,transparent 70%);pointer-events:none;z-index:-1}@media(prefers-color-scheme:light){.ambient-glow{background:radial-gradient(ellipse,rgba(0,53,128,.06) 0%,transparent 70%)}}.app-header{text-align:center;margin-bottom:2.5rem}.app-title{font-size:1.75rem;font-weight:700;letter-spacing:-.03em;color:var(--text-primary);margin-bottom:.25rem}.app-title .accent{background:linear-gradient(135deg,var(--accent),#4a9fe0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.app-subtitle{font-size:.875rem;color:var(--text-muted);font-weight:400}.back-link{display:inline-flex;align-items:center;gap:.4rem;font-size:.82rem;color:var(--text-muted);text-decoration:none;transition:color var(--transition-fast);margin-bottom:.5rem}.back-link:hover{color:var(--text-accent)}.app-footer{text-align:center;margin-top:4rem;padding-top:2rem;border-top:1px solid var(--border-subtle);color:var(--text-muted);font-size:.75rem;line-height:1.8}.app-footer a{color:var(--text-accent);text-decoration:none;transition:color var(--transition-fast)}.app-footer a:hover{color:var(--accent)}@media(max-width:600px){.app-container{padding:1.5rem 1rem 3rem}.app-title{font-size:1.35rem}}.footer-actions{display:flex;justify-content:center;gap:.6rem;flex-wrap:wrap;margin-bottom:1.25rem}.report-bug-btn{display:inline-flex;align-items:center;background:transparent;border:1.5px solid var(--border-input);border-radius:var(--radius-full);padding:.45rem 1rem;font-family:var(--font-sans);font-size:.78rem;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:color var(--transition-fast),border-color var(--transition-fast),background var(--transition-fast),box-shadow var(--transition-fast);text-decoration:none}.report-bug-btn:hover{color:var(--text-accent);border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 3px var(--accent-soft)}.report-bug-btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--radius-full)}a.report-bug-btn,a.report-bug-btn:hover{color:var(--text-secondary)}a.report-bug-btn:hover{color:var(--text-accent)}.report-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;display:flex;align-items:center;justify-content:center;padding:1rem;background:#0000008c;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);opacity:0;transition:opacity .2s ease}.report-modal-overlay.hidden{display:none}.report-modal-overlay.open{opacity:1}@media(prefers-color-scheme:light){.report-modal-overlay{background:#0000004d}}.report-modal{width:100%;max-width:480px;background:var(--bg-card);border:1px solid var(--border-input);border-radius:var(--radius-lg);padding:1.75rem;box-shadow:var(--shadow-lg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);transform:translateY(12px) scale(.98);transition:transform .22s cubic-bezier(.16,1,.3,1)}.report-modal-overlay.open 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var(--border-input);border-radius:var(--radius-md);outline:none;resize:vertical;min-height:110px;line-height:1.5;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.report-textarea::placeholder{color:var(--text-muted)}.report-textarea:focus{border-color:var(--border-input-focus);box-shadow:0 0 0 3px var(--accent-soft)}.report-char-count{font-size:.72rem;color:var(--text-muted);text-align:right;margin-top:.35rem;margin-bottom:1rem}.suggest-email-label{display:block;font-size:.8rem;font-weight:500;color:var(--text-secondary);margin-bottom:.4rem}.suggest-email-optional{font-weight:400;color:var(--text-muted)}.suggest-email-input{width:100%;padding:.65rem 1rem;font-family:var(--font-sans);font-size:.9rem;color:var(--text-primary);background:var(--bg-input);border:1.5px solid var(--border-input);border-radius:var(--radius-md);outline:none;margin-bottom:1rem;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}.suggest-email-input::placeholder{color:var(--text-muted)}.suggest-email-input:focus{border-color:var(--border-input-focus);box-shadow:0 0 0 3px var(--accent-soft)}.report-session-label{display:flex;align-items:flex-start;gap:.6rem;margin-bottom:1rem;padding:.65rem .85rem;background:var(--meta-bg);border:1px solid var(--border-subtle);border-radius:var(--radius-md);cursor:pointer;-webkit-user-select:none;user-select:none;line-height:1.4}.report-session-checkbox{margin-top:.15rem;flex-shrink:0;accent-color:var(--accent);width:15px;height:15px;cursor:pointer}.report-session-label>div{font-size:.85rem;font-weight:500;color:var(--text-primary)}.report-session-hint{display:block;font-size:.75rem;font-weight:400;color:var(--text-muted);margin-top:.15rem}.report-actions{display:flex;justify-content:flex-end;gap:.6rem}.report-cancel,.report-submit{padding:.55rem 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.75rem;border-radius:var(--radius-sm);line-height:1.4}.report-feedback.hidden{display:none}.report-feedback--success{background:var(--diff-insert-bg);color:var(--diff-insert-text)}.report-feedback--error{background:var(--diff-delete-bg);color:var(--diff-delete-text)}.report-toast{position:fixed;bottom:1.5rem;left:50%;transform:translate(-50%) translateY(8px);z-index:1100;background:var(--bg-card);border:1px solid var(--border-input);border-radius:var(--radius-full);padding:.6rem 1.25rem;font-size:.82rem;color:var(--text-secondary);box-shadow:var(--shadow-md);opacity:0;transition:opacity .22s ease,transform .22s ease;pointer-events:none;white-space:nowrap}.report-toast.open{opacity:1;transform:translate(-50%) translateY(0)}@media(max-width:600px){.report-modal{padding:1.35rem;border-radius:var(--radius-md)}.report-actions{flex-direction:column-reverse}.report-cancel,.report-submit{width:100%;text-align:center}}:root{--bubble-char-bg: rgba(30, 33, 50, .85);--bubble-char-border: rgba(255, 255, 255, .07);--bubble-user-bg: rgba(26, 107, 191, .22);--bubble-user-border: rgba(26, 107, 191, .35);--assess-bg: rgba(15, 17, 28, .7);--assess-border: rgba(255, 255, 255, .05);--grammar-fg: #f87171;--grammar-bg: rgba(248, 113, 113, .1);--vocab-fg: #fbbf24;--vocab-bg: rgba(251, 191, 36, .1);--praise-fg: #34d399;--praise-bg: rgba(52, 211, 153, .1);--level-a1-bg: rgba(52, 211, 153, .14);--level-a1-fg: #34d399;--level-a2-bg: rgba(56, 189, 248, .14);--level-a2-fg: #38bdf8;--level-b1-bg: rgba(167, 139, 250, .14);--level-b1-fg: #a78bfa;--level-b2-bg: rgba(251, 191, 36, .14);--level-b2-fg: #fbbf24}@media(prefers-color-scheme:light){:root{--bubble-char-bg: rgba(240, 242, 250, .95);--bubble-char-border: rgba(0, 0, 0, .06);--bubble-user-bg: rgba(0, 53, 128, .08);--bubble-user-border: rgba(0, 53, 128, .18);--assess-bg: rgba(245, 246, 252, .9);--assess-border: rgba(0, 0, 0, .05);--grammar-fg: #dc2626;--grammar-bg: rgba(220, 38, 38, .07);--vocab-fg: #d97706;--vocab-bg: rgba(217, 119, 6, .08);--praise-fg: #059669;--praise-bg: rgba(5, 150, 105, .07);--level-a1-bg: rgba(5, 150, 105, .1);--level-a1-fg: #059669;--level-a2-bg: rgba(2, 132, 199, .1);--level-a2-fg: #0284c7;--level-b1-bg: rgba(109, 40, 217, .1);--level-b1-fg: #6d28d9;--level-b2-bg: rgba(180, 83, 9, .1);--level-b2-fg: #b45309}}.conv-container{max-width:680px;padding-bottom:0;min-height:100dvh;display:flex;flex-direction:column}.conv-container:has(#view-chat:not(.hidden)),.conv-container:has(#view-scenes:not(.hidden)){padding:0;max-width:680px;height:100dvh;max-height:100dvh;overflow:hidden}.hidden{display:none!important}.toast{position:fixed;bottom:2rem;left:50%;transform:translate(-50%) translateY(1rem);background:var(--accent);color:#fff;font-family:var(--font-sans);font-size:.875rem;font-weight:500;padding:.65rem 1.25rem;border-radius:var(--radius-full);box-shadow:0 4px 20px #0000004d;opacity:0;pointer-events:none;max-width:calc(100vw - 2rem);white-space:normal;text-align:center;transition:opacity .2s ease,transform .2s ease;z-index:100}.toast--visible{opacity:1;transform:translate(-50%) translateY(0)}.conv-sub-header{padding:1.25rem 0 .5rem;display:flex;align-items:center}.back-btn{background:none;border:none;font-family:var(--font-sans);font-size:.82rem;color:var(--text-muted);cursor:pointer;padding:.25rem 0;transition:color var(--transition-fast)}.back-btn:hover{color:var(--text-accent)}.back-btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}#view-scenes{display:flex;flex-direction:column;height:100dvh;max-height:100dvh;overflow:hidden;padding:2rem 1.5rem 1.5rem}#scenes-list{flex:1;overflow-y:auto;min-height:0;padding:1rem}#view-scenes .app-footer{margin-top:0;padding-top:1.25rem;border-top:1px solid var(--border-subtle);flex-shrink:0}.scenes-loading{text-align:center;color:var(--text-muted);font-size:.875rem;padding:3rem 0}.family-group{margin-bottom:2.5rem}.family-heading{display:flex;align-items:center;gap:.5rem;font-size:.7rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);margin:0 0 .75rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-subtle)}.family-icon{font-size:1rem}.scenes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:.75rem}.scene-card{display:block;text-decoration:none;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:1.1rem 1.25rem;cursor:pointer;text-align:left;font-family:var(--font-sans);color:inherit;transition:background var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);animation:scene-card-in .4s cubic-bezier(.16,1,.3,1) both}@keyframes scene-card-in{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.scene-card:hover{background:var(--bg-card-hover);border-color:var(--border-input);box-shadow:var(--shadow-md);transform:translateY(-2px)}.scene-card:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.scene-card-header{display:flex;align-items:flex-start;justify-content:space-between;gap:.5rem;margin-bottom:.4rem}.scene-title{font-size:.95rem;font-weight:600;color:var(--text-primary);letter-spacing:-.01em;line-height:1.3}.scene-desc{font-size:.8rem;color:var(--text-secondary);line-height:1.45;margin:0}.level-badge{display:inline-flex;align-items:center;padding:.15rem .55rem;border-radius:var(--radius-full);font-size:.7rem;font-weight:700;letter-spacing:.04em;flex-shrink:0;white-space:nowrap}.level-A1{background:var(--level-a1-bg);color:var(--level-a1-fg)}.level-A2{background:var(--level-a2-bg);color:var(--level-a2-fg)}.level-B1{background:var(--level-b1-bg);color:var(--level-b1-fg)}.level-B2{background:var(--level-b2-bg);color:var(--level-b2-fg)}.briefing-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:1.75rem;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);animation:fade-up .35s cubic-bezier(.16,1,.3,1) both}@keyframes fade-up{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}.briefing-title-row{display:flex;align-items:center;gap:.75rem;margin-bottom:1.25rem;flex-wrap:wrap}.briefing-title{font-size:1.25rem;font-weight:700;letter-spacing:-.02em;color:var(--text-primary);margin:0;flex:1;min-width:0}.briefing-block{margin-bottom:1.1rem}.briefing-label{display:block;font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text-muted);margin-bottom:.35rem}.briefing-body{margin:0;font-size:.9rem;color:var(--text-secondary);line-height:1.55}.briefing-goal-text{color:var(--text-primary);font-weight:500;background:var(--accent-soft);padding:.65rem .9rem;border-radius:var(--radius-sm);border-left:3px solid var(--accent)}.vocab-details{margin-bottom:1.5rem;border-radius:var(--radius-sm);border:1px solid var(--border-subtle);overflow:hidden}.vocab-summary{font-size:.82rem;font-weight:600;color:var(--text-secondary);cursor:pointer;padding:.65rem .9rem;-webkit-user-select:none;user-select:none;transition:color var(--transition-fast),background var(--transition-fast);list-style:none}.vocab-summary::-webkit-details-marker{display:none}.vocab-summary:hover{color:var(--text-primary);background:var(--meta-bg)}.vocab-list{margin:0;padding:.5rem .9rem .75rem 1.5rem;display:flex;flex-direction:column;gap:.3rem}.vocab-list li{font-size:.82rem;color:var(--text-secondary);line-height:1.4}.vocab-list li strong{color:var(--text-primary);font-family:var(--font-mono);font-size:.78rem}.briefing-actions{display:flex;gap:.75rem;flex-wrap:wrap}.btn-primary{display:inline-flex;align-items:center;gap:.4rem;padding:.7rem 1.4rem;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-md);font-family:var(--font-sans);font-size:.9rem;font-weight:600;cursor:pointer;transition:background var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast)}.btn-primary:hover{background:#1e5fad;box-shadow:0 0 0 3px var(--accent-soft);transform:translateY(-1px)}.btn-primary:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.btn-primary:active{transform:translateY(0)}#view-chat{display:flex;flex-direction:column;position:fixed;top:0;right:0;bottom:0;left:0;overflow:hidden}.chat-topbar,.chat-goal-strip,.chat-window,.chat-input-row,.chat-disclaimer{max-width:720px;width:100%;margin-inline:auto}.chat-topbar{display:flex;align-items:center;justify-content:space-between;column-gap:1.5rem;padding:.75rem 1.5rem;border-bottom:1px solid var(--border-subtle);flex-shrink:0;background:var(--bg-primary);box-sizing:border-box}.chat-topbar-left{display:flex;align-items:center;flex-shrink:0}.chat-topbar-actions{display:flex;flex-direction:row;flex-wrap:wrap;align-items:center;justify-content:flex-end;gap:.4rem .5rem;flex:1;min-width:0}@media(prefers-color-scheme:light){.chat-topbar{background:var(--bg-secondary)}}.chat-topbar-space{flex:1}.btn-finish{background:none;border:1px solid var(--border-input);border-radius:var(--radius-full);font-family:var(--font-sans);font-size:.75rem;font-weight:600;color:var(--text-secondary);padding:.3rem .75rem;cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast),color var(--transition-fast);white-space:nowrap}.btn-finish:hover:not(:disabled){background:var(--bg-badge);border-color:var(--accent);color:var(--text-accent)}.btn-finish:disabled{opacity:.35;cursor:not-allowed}.btn-finish:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.btn-vocab-hints{background:none;border:1px solid var(--border-subtle);border-radius:var(--radius-full);font-family:var(--font-sans);font-size:.75rem;font-weight:600;color:var(--text-secondary);padding:.3rem .7rem;cursor:pointer;transition:background var(--transition-fast),border-color var(--transition-fast),color 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