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8px);left:50%;transform:translate(-50%);z-index:30;min-width:200px;max-width:min(280px,calc(100vw - 32px));padding:12px;background:var(--surface-elevated);border-radius:var(--radius-sm);border:1px solid var(--border-subtle);box-shadow:var(--shadow-md);opacity:0;visibility:hidden;pointer-events:none;transition:opacity var(--duration-fast) var(--ease-standard),visibility var(--duration-fast) var(--ease-standard)}.play-controls__actions-row .play-hint-tooltip__panel{left:auto;right:0;transform:none}.play-hint-tooltip:hover .play-hint-tooltip__panel,.play-hint-tooltip:focus-within .play-hint-tooltip__panel,.play-hint-tooltip--open .play-hint-tooltip__panel{opacity:1;visibility:visible;pointer-events:auto}.play-hint-tooltip__title{margin:0 0 6px;font-size:.75rem;font-weight:600;color:#424242}.play-hint-tooltip__panel p{margin:0;font-size:.75rem;color:#616161;line-height:1.5}.play-hint-tooltip__panel p+p{margin-top:4px}.win-banner{margin-bottom:16px;padding:16px;background:#c8e6c9;border-radius:var(--radius-md);text-align:center}.win-banner p{margin:0;font-size:1.25rem;font-weight:700;color:#1b5e20}.daily-summary{margin-bottom:16px;padding:16px;border:1px solid #cfd8dc;border-radius:var(--radius-md);background:#f5fbff;text-align:center}.daily-summary__title{margin:0;font-size:1rem;font-weight:700;color:var(--color-secondary)}.daily-summary__placement{margin:8px 0 0;font-size:.95rem;color:#263238}.daily-summary__err{margin:8px 0 0;color:#c62828;font-size:.875rem}.daily-summary__cta{margin-top:12px}.daily-summary--journey{border-color:#c7d6e6;background:linear-gradient(165deg,#f5fafe,#f6f4fb)}.daily-summary__actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(10rem,1fr));gap:12px;margin-top:12px;width:100%;max-width:26rem;margin-inline:auto}.daily-summary__actions .daily-summary__cta{margin-top:0;width:100%;justify-content:center}.daily-summary__actions--next-only{max-width:14rem;margin-inline:auto;grid-template-columns:1fr;justify-items:center}.daily-summary__actions--next-only .why-section__cta{width:auto;max-width:100%}.sudoku-page-instructions{max-width:1100px;margin:16px auto 0;padding:0 24px 24px;font-family:Arial,Helvetica,sans-serif;font-size:.8125rem;line-height:1.5;color:#616161}.sudoku-page-instructions p{margin:0}.win-overlay{position:fixed;inset:0;z-index:9000;display:flex;align-items:center;justify-content:center}.win-overlay__backdrop{position:absolute;inset:0;background:#0f172a8c;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:winFadeIn .35s ease both;touch-action:none}@keyframes winFadeIn{0%{opacity:0}to{opacity:1}}.win-overlay__scroll{position:relative;width:100%;max-height:100vh;overflow-y:auto;display:flex;align-items:center;justify-content:center;padding:20px;overscroll-behavior:contain}.win-overlay__content{position:relative;width:100%;max-width:440px;padding:44px 32px 36px;text-align:center;border-radius:calc(var(--radius-xl) + 8px);background:var(--surface);box-shadow:var(--shadow-lg);animation:winSlideUp .5s cubic-bezier(.22,1,.36,1) both}@keyframes winSlideUp{0%{opacity:0;transform:translateY(40px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.win-overlay__close{position:absolute;top:12px;right:12px;display:flex;align-items:center;justify-content:center;width:36px;height:36px;padding:0;border:none;border-radius:50%;background:transparent;color:#90a4ae;cursor:pointer;transition:background var(--duration-fast) var(--ease-standard),color var(--duration-fast) var(--ease-standard);z-index:1}.win-overlay__close:hover{background:#f5f5f5;color:#37474f}.win-overlay__trophy{display:inline-flex;align-items:center;justify-content:center;width:96px;height:96px;margin-bottom:18px;border-radius:50%;background:radial-gradient(circle at 30% 30%,rgba(255,255,255,.9),transparent 60%),linear-gradient(140deg,var(--color-primary-surface) 0%,var(--color-primary-sky) 35%,var(--color-primary) 100%);box-shadow:0 1px #fffffff2 inset,0 20px 40px -10px color-mix(in srgb,var(--color-primary-strong) 40%,transparent),0 0 0 8px color-mix(in srgb,var(--color-primary-sky) 20%,transparent);animation:winTrophyPop .6s .25s cubic-bezier(.22,1,.36,1) both}@keyframes winTrophyPop{0%{opacity:0;transform:scale(.4) translateY(16px)}60%{transform:scale(1.1) translateY(-6px)}to{opacity:1;transform:scale(1) translateY(0)}}.win-overlay__trophy svg{width:48px;height:48px;color:#2d3a4f;filter:drop-shadow(0 4px 8px rgba(0,0,0,.15))}.win-overlay__title{margin:0 0 20px;font-size:1.75rem;font-weight:800;letter-spacing:-.03em;color:var(--color-secondary);animation:winSlideUp .5s .12s cubic-bezier(.22,1,.36,1) both}.win-overlay__stats{display:flex;align-items:center;justify-content:center;gap:24px;margin-bottom:28px;padding:16px 24px;border-radius:var(--radius-xl);background:var(--surface-elevated);border:1px solid #e8edf2;animation:winSlideUp .5s .2s cubic-bezier(.22,1,.36,1) both}.win-overlay__stat{display:flex;flex-direction:column;align-items:center;gap:4px}.win-overlay__stat-label{font-size:.7rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#78909c}.win-overlay__stat-value{font-size:1.5rem;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:-.02em;color:#263238}.win-overlay__stat-value--diff{text-transform:capitalize}.win-overlay__stat-divider{width:1px;height:40px;background:#d5dce3}.win-overlay__extra{margin-bottom:8px}.win-overlay__placement{margin:0 0 12px;font-size:1rem;color:#37474f}.win-overlay__err{margin:4px 0 12px;color:#c62828;font-size:.875rem}.win-overlay__cta-big{position:relative;isolation:isolate;display:flex;align-items:center;justify-content:center;gap:10px;width:100%;padding:18px 24px;margin-bottom:24px;font-size:1.15rem;font-weight:800;letter-spacing:-.01em;color:#fff;text-decoration:none;border:none;border-radius:var(--radius-xl);cursor:pointer;background:transparent;box-shadow:none;transition:transform var(--duration-fast) var(--ease-standard),box-shadow var(--duration-fast) var(--ease-standard);animation:winSlideUp .5s .3s cubic-bezier(.22,1,.36,1) both}.win-overlay__cta-big:before{content:"";position:absolute;inset:0;z-index:-1;border-radius:inherit;pointer-events:none;background:var(--gradient-cta);box-shadow:0 8px 24px -6px color-mix(in srgb,var(--color-secondary) 50%,transparent);animation:ctaPulse 2.2s 1.2s ease-in-out infinite}@keyframes ctaPulse{0%,to{transform:scale(1);box-shadow:0 8px 24px -6px color-mix(in srgb,var(--color-secondary) 50%,transparent)}50%{transform:scale(1.045);box-shadow:0 14px 36px -6px color-mix(in srgb,var(--color-secondary) 60%,transparent)}}.btn.btn--primary.win-overlay__cta-big:hover:not(:disabled){background:transparent}.win-overlay__cta-big:hover{transform:translateY(-2px);box-shadow:0 12px 32px -6px color-mix(in srgb,var(--color-secondary) 60%,transparent)}.win-overlay__cta-big:hover:before{animation:none;transform:scale(1);box-shadow:0 8px 24px -6px color-mix(in srgb,var(--color-secondary) 50%,transparent)}.win-overlay__cta-big:active{transform:translateY(0)}.win-overlay__cta-big:active:before{transform:scale(1)}.win-overlay__cta-big--ghost{color:var(--color-on-surface, #37474f);animation:winSlideUp .5s .35s cubic-bezier(.22,1,.36,1) both}.win-overlay__cta-big--ghost:before{background:transparent;border:1.5px solid var(--color-border, #cfd8dc);box-shadow:none;animation:none}.win-overlay__cta-big--ghost:hover{transform:translateY(-1px);box-shadow:none}.win-overlay__cta-big--ghost:hover:before{background:#0f172a0a;box-shadow:none}.win-overlay__cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:12px;animation:winSlideUp .5s .4s cubic-bezier(.22,1,.36,1) both}.win-overlay__card{display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px 12px 16px;text-decoration:none;border-radius:var(--radius-xl);border:1px solid #e0e7ee;background:var(--surface);box-shadow:0 4px 12px -4px #0000000f;transition:transform calc(var(--duration-fast) + .03s) var(--ease-standard),box-shadow calc(var(--duration-fast) + .03s) var(--ease-standard),border-color calc(var(--duration-fast) + .03s) var(--ease-standard);cursor:pointer}.win-overlay__card:hover{transform:translateY(-3px);box-shadow:0 10px 24px -6px #0000001f}.win-overlay__card-icon{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:calc(var(--radius-xl) - 2px);transition:transform calc(var(--duration-fast) + .03s) var(--ease-standard)}.win-overlay__card:hover .win-overlay__card-icon{transform:scale(1.08)}.win-overlay__card--harder .win-overlay__card-icon{background:color-mix(in srgb,var(--color-primary-strong) 10%,transparent);color:var(--color-primary-strong)}.win-overlay__card--harder:hover{border-color:color-mix(in srgb,var(--color-primary-strong) 35%,transparent)}.win-overlay__card--daily .win-overlay__card-icon{background:#e6510014;color:#e65100}.win-overlay__card--daily:hover{border-color:#e651004d}.win-overlay__card--multi .win-overlay__card-icon{background:color-mix(in srgb,var(--color-secondary) 8%,transparent);color:var(--color-secondary)}.win-overlay__card--multi:hover{border-color:color-mix(in srgb,var(--color-secondary) 30%,transparent)}.win-overlay__card-label{font-size:.85rem;font-weight:700;color:#263238}.win-overlay__card-hint{font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:#90a4ae}@media(max-width:480px){.win-overlay__scroll{align-items:flex-start;padding:16px 14px 24px}.win-overlay__content{padding:28px 20px 24px;border-radius:calc(var(--radius-xl) + 4px)}.win-overlay__title{font-size:1.4rem}.win-overlay__stats{gap:16px;padding:14px 16px}.win-overlay__cta-big{padding:16px 20px;font-size:1.05rem}.win-overlay__cards{grid-template-columns:1fr 1fr}}@media(max-width:340px){.win-overlay__cards{grid-template-columns:1fr}}@media(prefers-reduced-motion:reduce){.win-overlay__backdrop,.win-overlay__content,.win-overlay__trophy,.win-overlay__title,.win-overlay__stats,.win-overlay__cta-big,.win-overlay__cta-big:before,.win-overlay__cards{animation:none!important}}.confirm-modal{position:fixed;inset:0;z-index:9100;display:flex;align-items:center;justify-content:center}.confirm-modal__backdrop{position:absolute;inset:0;background:#0f172a8c;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);animation:winFadeIn .25s ease both}.confirm-modal__scroll{position:relative;width:100%;max-height:100vh;overflow-y:auto;display:flex;align-items:center;justify-content:center;padding:20px}.confirm-modal__content{position:relative;width:100%;max-width:380px;padding:36px 28px 24px;text-align:center;border-radius:calc(var(--radius-xl) + 4px);background:var(--surface);box-shadow:var(--shadow-lg);animation:winSlideUp .4s cubic-bezier(.22,1,.36,1) both}.confirm-modal__close{position:absolute;top:10px;right:10px;display:flex;align-items:center;justify-content:center;width:34px;height:34px;padding:0;border:none;border-radius:50%;background:transparent;color:#90a4ae;cursor:pointer;transition:background var(--duration-fast) var(--ease-standard),color var(--duration-fast) var(--ease-standard)}.confirm-modal__close:hover{background:#f5f5f5;color:#37474f}.confirm-modal__icon{display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;margin-bottom:14px;border-radius:50%;background:radial-gradient(circle at 30% 30%,rgba(255,255,255,.85),transparent 60%),linear-gradient(140deg,#d32f2f29,#d32f2f52);color:#c62828;box-shadow:0 10px 22px #d32f2f38,inset 0 1px #fff9}.confirm-modal__icon svg{width:28px;height:28px}.confirm-modal__title{margin:0 0 8px;font-size:1.25rem;font-weight:800;color:#263238}.confirm-modal__message{margin:0 0 22px;color:#546e7a;line-height:1.45}.confirm-modal__actions{display:flex;flex-direction:column-reverse;gap:10px}@media(min-width:420px){.confirm-modal__actions{flex-direction:row;justify-content:flex-end}}.confirm-modal__btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 18px;border-radius:999px;font-size:.95rem;font-weight:700;letter-spacing:.01em;cursor:pointer;border:1px solid transparent;transition:background var(--duration-fast) var(--ease-standard),color var(--duration-fast) var(--ease-standard),transform var(--duration-fast) var(--ease-standard),box-shadow var(--duration-fast) var(--ease-standard)}.confirm-modal__btn--ghost{background:transparent;color:#546e7a;border-color:#546e7a2e}.confirm-modal__btn--ghost:hover{background:#546e7a0f;color:#263238}.confirm-modal__btn--danger{background:linear-gradient(135deg,#ef5350,#c62828);color:#fff;box-shadow:0 8px 18px #c6282852}.confirm-modal__btn--danger:hover{transform:translateY(-1px);box-shadow:0 10px 22px #c6282861}.confirm-modal__btn--danger:active{transform:translateY(0);box-shadow:0 6px 14px #c6282852}@media(prefers-reduced-motion:reduce){.confirm-modal__backdrop,.confirm-modal__content{animation:none!important}}:root,.app-root{--color-primary: #1976d2;--color-primary-strong: #1565c0;--color-secondary: #0d47a1;--color-secondary-strong: #1a237e;--color-secondary-soft: #7986cb;--gradient-cta: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);--color-primary-surface: #e3f2fd;--color-primary-surface-mid: #bbdefb;--color-primary-surface-soft: #dceefb;--color-primary-sky: #90caf9;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .12);--shadow-md: 0 4px 12px rgba(0, 0, 0, .12), 0 2px 4px rgba(0, 0, 0, .08);--shadow-lg: 0 32px 80px -20px rgba(0, 0, 0, .35);--duration-fast: .15s;--ease-standard: ease;--btn-primary-hover-translate-y: 0;--btn-cta-hover-translate-y: -2px;--btn-cta-hover-scale: 1.02;--btn-cta-active-translate-y: 0;--btn-cta-active-scale: .98;--btn-cta-shadow-rest: 0 4px 12px -2px color-mix(in srgb, var(--color-secondary) 40%, transparent), 0 12px 28px -8px color-mix(in srgb, var(--color-secondary) 25%, transparent);--btn-cta-shadow-hover: 0 6px 16px -2px color-mix(in srgb, var(--color-secondary) 50%, transparent), 0 16px 36px -8px color-mix(in srgb, var(--color-secondary) 30%, transparent);--surface: #ffffff;--surface-elevated: #f5f8fa;--border-subtle: #e0e0e0}body{font-family:Arial,sans-serif}.app-root{display:flex}.app-main{flex:1;min-width:0}.card{background:var(--surface);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);overflow:hidden}.card__header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:16px;border-bottom:1px solid var(--border-subtle)}.card__content{padding:16px}.btn{display:inline-flex;align-items:center;justify-content:center;font:inherit;cursor:pointer;border-radius:var(--radius-sm);border:1px solid transparent;padding:8px 16px;font-size:.875rem;font-weight:500;transition:background var(--duration-fast) var(--ease-standard),border-color var(--duration-fast) var(--ease-standard),color var(--duration-fast) var(--ease-standard),transform var(--duration-fast) var(--ease-standard),box-shadow var(--duration-fast) var(--ease-standard)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.btn:focus:not(:focus-visible){outline:none}.btn--outline-danger:focus-visible{outline-color:#d32f2f}.btn--primary{background:var(--color-primary);color:#fff}.btn--primary:hover:not(:disabled){background:var(--color-primary-strong);transform:translateY(var(--btn-primary-hover-translate-y))}.btn--primary.btn--cta{border:none;border-radius:var(--radius-xl);padding:12px 20px;font-weight:700;background:var(--gradient-cta);box-shadow:var(--btn-cta-shadow-rest)}.btn--primary.btn--cta:hover:not(:disabled){background:var(--gradient-cta);transform:translateY(var(--btn-cta-hover-translate-y)) scale(var(--btn-cta-hover-scale));box-shadow:var(--btn-cta-shadow-hover)}.btn--primary.btn--cta:active:not(:disabled){background:var(--gradient-cta);transform:translateY(var(--btn-cta-active-translate-y)) scale(var(--btn-cta-active-scale));box-shadow:var(--btn-cta-shadow-rest)}@media(prefers-reduced-motion:reduce){.btn--primary.btn--cta:hover:not(:disabled),.btn--primary.btn--cta:active:not(:disabled){transform:none}}.btn--outline{background:var(--surface);border-color:#0000003b;color:var(--color-primary)}.btn--outline:hover:not(:disabled){background:color-mix(in srgb,var(--color-primary) 4%,transparent);border-color:var(--color-primary)}.btn--outline-danger{background:var(--surface);border-color:#d32f2f80;color:#d32f2f}.btn--outline-danger:hover:not(:disabled){background:#d32f2f0a}.btn--ghost{background:transparent;border-color:transparent;color:#546e7a}.btn--ghost:hover:not(:disabled){background:color-mix(in srgb,var(--color-secondary) 6%,transparent);color:#1a2a3a}.btn--sm{padding:6px 12px;font-size:.8125rem}.btn--block{width:100%}.text-muted{color:#616161;font-size:.875rem}