:root{--bg: #f0fdf4;--surface: #ffffff;--surface-2: #ecfdf5;--text: #052e16;--text-soft: #4b5563;--accent: #16a34a;--accent-soft: #dcfce7;--success: #16a34a;--success-soft: #dcfce7;--danger: #ef4444;--danger-soft: #fee2e2;--warn: #f59e0b;--border: #bbf7d0;--shadow: 0 6px 18px rgba(6, 95, 70, .1);--radius: 18px;--radius-lg: 26px}[data-theme=dark]{--bg: #07140d;--surface: #0f1d15;--surface-2: #0b1810;--text: #ecfdf5;--text-soft: #9ca3af;--accent: #4ade80;--accent-soft: #0c3a23;--border: #1e3a2a;--success-soft: #0c3a23;--danger-soft: #3a1212;--shadow: 0 8px 24px rgba(0, 0, 0, .5)}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--bg: #07140d;--surface: #0f1d15;--surface-2: #0b1810;--text: #ecfdf5;--text-soft: #9ca3af;--accent: #4ade80;--accent-soft: #0c3a23;--border: #1e3a2a;--success-soft: #0c3a23;--danger-soft: #3a1212;--shadow: 0 8px 24px rgba(0, 0, 0, .5)}}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,"Apple Color Emoji","Segoe UI Emoji",sans-serif;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overscroll-behavior:none;-webkit-user-select:none;user-select:none}button{font-family:inherit;cursor:pointer}input{font-family:inherit}.app{min-height:100%;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;padding-top:calc(clamp(12px,1.4vw,18px) + env(safe-area-inset-top,0px));padding-right:calc(clamp(16px,2.4vw,28px) + env(safe-area-inset-right,0px));padding-bottom:clamp(12px,1.4vw,18px);padding-left:calc(clamp(16px,2.4vw,28px) + env(safe-area-inset-left,0px));border-bottom:1px solid var(--border);background:var(--surface);position:sticky;top:0;z-index:10}.topbar .title{font-weight:700;font-size:clamp(18px,2.2vw,24px);display:flex;gap:10px;align-items:center}.topbar .brand-logo{width:clamp(28px,3vw,38px);height:clamp(28px,3vw,38px);border-radius:8px;display:block}.topbar .brand-btn{display:inline-flex;align-items:center;gap:10px;background:transparent;border:0;padding:4px 6px;border-radius:12px;color:inherit;font-weight:inherit;font-size:inherit;cursor:pointer}.topbar .brand-btn:hover:not(:disabled){background:var(--surface-2)}.topbar .brand-btn:disabled{cursor:default;opacity:1}.topbar .user-pill{display:inline-flex;align-items:center;gap:6px;background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:4px 12px;font-size:clamp(13px,1.4vw,16px);color:var(--text-soft);font-weight:600;cursor:pointer}.topbar .user-pill:hover:not(:disabled){border-color:var(--accent);color:var(--text)}.topbar .user-pill:disabled{cursor:default}.topbar 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var(--border);border-radius:var(--radius-lg);padding:clamp(20px,4vw,36px) clamp(16px,3vw,28px);text-align:center;box-shadow:var(--shadow);transition:background .15s ease,border-color .15s ease}.problem-card.fb-correct{border-color:var(--success);background:var(--success-soft)}.problem-card.fb-wrong{border-color:var(--danger);background:var(--danger-soft)}.problem-text{font-size:clamp(22px,4.4vw,36px);font-weight:800;line-height:1.25;letter-spacing:.5px;white-space:pre-line}.problem-emoji{font-size:clamp(56px,10vw,96px);line-height:1;margin-top:10px}.hint-row{margin-top:12px;display:flex;justify-content:center}.spell-input{display:flex;flex-direction:column;gap:14px;margin-top:4px}.spell-slots{display:flex;flex-wrap:wrap;gap:clamp(6px,1.4vw,12px);justify-content:center}.spell-slot{width:clamp(44px,9vw,64px);height:clamp(54px,11vw,78px);border:3px dashed var(--border);border-radius:14px;display:grid;place-items:center;font-size:clamp(28px,5vw,42px);font-weight:900;color:var(--accent);background:var(--surface)}.spell-slot.filled{border-style:solid;border-color:var(--accent);background:var(--accent-soft)}.letter-bank{display:grid;grid-template-columns:repeat(auto-fit,minmax(48px,1fr));gap:clamp(6px,1vw,10px);max-width:640px;margin:0 auto;width:100%}.letter-tile{aspect-ratio:1;background:var(--surface);border:2px solid var(--border);border-radius:14px;font-size:clamp(22px,4.4vw,32px);font-weight:800;color:var(--text);min-height:56px;display:grid;place-items:center;cursor:pointer;transition:transform 80ms ease,background .12s ease,opacity .12s ease}.letter-tile:hover:not(:disabled){background:var(--accent-soft);border-color:var(--accent)}.letter-tile:active:not(:disabled){transform:translateY(2px)}.letter-tile.used,.letter-tile:disabled{opacity:.2;cursor:default}.spell-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:4px}.choice-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:clamp(8px,1.4vw,14px)}.choice-grid.large{grid-template-columns:repeat(auto-fit,minmax(120px,1fr))}.choice-tile{background:var(--surface);border:2px solid var(--border);border-radius:var(--radius);padding:clamp(16px,2.4vw,24px) 10px;font-size:clamp(20px,3.6vw,28px);font-weight:800;color:var(--text);min-height:64px;cursor:pointer}.choice-grid.large .choice-tile{font-size:clamp(32px,6vw,56px);padding:clamp(20px,3vw,32px) 10px}.choice-tile:hover:not(:disabled){background:var(--accent-soft);border-color:var(--accent)}.choice-tile.correct{background:var(--success-soft);border-color:var(--success);color:var(--success)}.choice-tile.wrong{background:var(--danger-soft);border-color:var(--danger);color:var(--danger)}.choice-tile:disabled{cursor:default}.picture-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(8px,1.4vw,14px)}@media (min-width: 640px){.picture-grid{grid-template-columns:repeat(4,1fr)}}.picture-tile{aspect-ratio:1;background:var(--surface);border:2px solid 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var(--border);border-radius:var(--radius);padding:14px 10px}.stat-value{font-size:22px;font-weight:800;color:var(--accent)}.stat-label{font-size:12px;color:var(--text-soft);text-transform:uppercase;letter-spacing:.5px}.badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:0 0 16px}.badge-pill{background:var(--accent-soft);color:var(--accent);border:1px solid var(--accent);border-radius:999px;padding:6px 12px;font-weight:700;font-size:13px;display:inline-flex;gap:6px;align-items:center}.result-wrongs{text-align:left;margin-top:16px}.result-wrongs h2{font-size:18px;margin:0 0 8px}.wrong-list{list-style:none;padding:0;margin:0 0 14px;display:flex;flex-direction:column;gap:10px}.wrong-list li{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px}.wrong-prompt{font-size:20px;font-weight:700;white-space:pre-line}.wrong-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:6px;font-size:14px}.wrong-bad{color:var(--danger)}.wrong-good{color:var(--success);font-weight:700}.wrong-meta{display:flex;justify-content:space-between;align-items:center;margin-top:8px;font-size:12px;color:var(--text-soft)}.link-btn{background:transparent;border:0;color:var(--text-soft);text-decoration:underline;padding:4px 6px;font-size:12px}.modal-scrim{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:50;padding:14px}.modal-card{width:min(460px,100%);background:var(--surface);color:var(--text);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow);max-height:90vh;overflow-y:auto}.settings-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid 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var(--danger);text-underline-offset:4px}.story-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:18px}.read-status{margin-top:14px;font-size:clamp(14px,1.8vw,18px);color:var(--text-soft);text-align:center}.read-status strong{color:var(--text)}.read-status.listening{color:var(--accent);font-weight:700;display:inline-flex;gap:8px;align-items:center;justify-content:center}.read-status.error{color:var(--danger)}.read-status-tip{color:var(--text-soft);margin-left:6px;font-style:italic}.mic-dot{width:12px;height:12px;border-radius:50%;background:var(--danger);display:inline-block;animation:mic-dot 1.1s infinite ease-in-out}@keyframes mic-dot{0%,to{transform:scale(.85);opacity:.55}50%{transform:scale(1.15);opacity:1}}.mic-btn{background:var(--accent);display:inline-flex;align-items:center;gap:8px}.mic-btn.live{background:var(--danger);position:relative}.mic-btn.live:after{content:"";position:absolute;top:-4px;right:-4px;bottom:-4px;left:-4px;border:2px solid var(--danger);border-radius:inherit;animation:mic-ring 1.2s infinite ease-out;pointer-events:none}.mic-pulse{width:10px;height:10px;border-radius:50%;background:#fff;box-shadow:0 0 #ffffffe6;animation:mic-dot 1.1s infinite ease-in-out;display:inline-block}@keyframes mic-ring{0%{opacity:.7;transform:scale(1)}to{opacity:0;transform:scale(1.15)}}