@font-face{font-family:Fredoka;font-style:normal;font-weight:300 700;font-stretch:75% 125%;font-display:swap;src:url(/assets/Fredoka-VariableFont_wdth_wght-DbxtNlKw.ttf)format("truetype-variations"),url(/assets/Fredoka-VariableFont_wdth_wght-DbxtNlKw.ttf)format("truetype")}:root{--lk-blu-notte:#2d325a;--lk-verde-kids:#00d2b4;--lk-rosso-corallo:#ff5252;--lk-giallo-matita:gold;--lk-nuvola-chiara:#f0f4f8;--lk-bianco:#fff;--lk-nero-soft:#1a1d36;--lk-verde-10:#e0f9f5;--lk-verde-20:#c2f4eb;--lk-rosso-10:#ffe5e5;--lk-rosso-20:#fcc;--lk-giallo-10:#fff8cc;--lk-giallo-20:#ffec99;--lk-blu-10:#e5e7ee;--lk-blu-20:#c5c9d9;--lk-gray-50:#f7f9fc;--lk-gray-100:#f0f4f8;--lk-gray-200:#dce3ec;--lk-gray-300:#b8c2d1;--lk-gray-400:#8c97ab;--lk-gray-500:#5e6884;--lk-gray-600:#3f476a;--lk-gray-700:#2d325a;--bg-page:var(--lk-nuvola-chiara);--bg-section:var(--lk-bianco);--bg-section-alt:var(--lk-nuvola-chiara);--bg-card:var(--lk-bianco);--fg-1:var(--lk-blu-notte);--fg-2:var(--lk-gray-600);--fg-3:var(--lk-gray-500);--fg-on-color:var(--lk-bianco);--border-soft:var(--lk-gray-200);--border-strong:var(--lk-gray-300);--accent-primary:var(--lk-verde-kids);--accent-info:var(--lk-blu-notte);--accent-warning:var(--lk-giallo-matita);--accent-danger:var(--lk-rosso-corallo);--accent-success:var(--lk-verde-kids);--link:var(--lk-verde-kids);--link-hover:#00b89d;--font-primary:"Fredoka", system-ui, -apple-system, "Segoe UI", sans-serif;--font-mono:ui-monospace, "SF Mono", Menlo, Consolas, monospace;--fw-regular:400;--fw-medium:500;--fw-semi:600;--fw-bold:700;--fw-extra:800;--fw-black:900;--fs-h1:clamp(2.25rem, 4vw, 3.5rem);--fs-h2:clamp(1.75rem, 3vw, 2.5rem);--fs-h3:clamp(1.375rem, 2vw, 1.75rem);--fs-h4:1.25rem;--fs-body:1.0625rem;--fs-sm:.9375rem;--fs-xs:.8125rem;--fs-button:1rem;--lh-tight:1.15;--lh-snug:1.3;--lh-body:1.5;--lh-loose:1.7;--ls-cap:1px;--radius-sm:8px;--radius-md:16px;--radius-lg:24px;--radius-xl:32px;--radius-pill:9999px;--shadow-card:0 8px 24px #2d325a0d;--shadow-hover:0 14px 34px #2d325a1a;--shadow-pop:0 18px 50px #2d325a26;--shadow-press:0 2px 6px #2d325a14 inset;--shadow-focus:0 0 0 4px #00d2b44d;--sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--sp-8:64px;--sp-9:96px;--ease-out:cubic-bezier(.22, 1, .36, 1);--ease-bounce:cubic-bezier(.34, 1.56, .64, 1);--dur-fast:.14s;--dur-base:.22s;--dur-slow:.4s}html{font-family:var(--font-primary);color:var(--fg-1)}body{background:var(--bg-page);color:var(--fg-1);font-family:var(--font-primary);font-size:var(--fs-body);line-height:var(--lh-body);font-weight:var(--fw-regular);-webkit-font-smoothing:antialiased;margin:0}h1,h2,h3,h4{font-family:var(--font-primary);color:var(--lk-blu-notte);line-height:var(--lh-tight);letter-spacing:-.01em;margin:0 0 var(--sp-4)}h1{font-size:var(--fs-h1);font-weight:700;font-stretch:115%}h2{font-size:var(--fs-h2);font-weight:700;font-stretch:110%}h3{font-size:var(--fs-h3);font-weight:700}h4{font-size:var(--fs-h4);font-weight:600}p{margin:0 0 var(--sp-4);color:var(--fg-2);line-height:var(--lh-body)}small,.meta{font-size:var(--fs-sm);color:var(--fg-3)}strong,b{font-weight:var(--fw-bold);color:var(--fg-1)}a{color:var(--link);font-weight:var(--fw-bold);transition:color var(--dur-fast) var(--ease-out);text-decoration:none}a:hover{color:var(--link-hover);text-underline-offset:3px;text-decoration:underline}::selection{background:var(--lk-giallo-20);color:var(--lk-blu-notte)}.lk-card{background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:var(--sp-5);transition:transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out)}.lk-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-5px)}.lk-btn{font-family:var(--font-primary);font-weight:var(--fw-bold);font-size:var(--fs-button);letter-spacing:var(--ls-cap);text-transform:uppercase;border-radius:var(--radius-pill);cursor:pointer;transition:transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);border:none;justify-content:center;align-items:center;gap:8px;padding:12px 30px;display:inline-flex}.lk-btn-primary{background:var(--lk-verde-kids);color:#fff;box-shadow:0 6px #00a78f}.lk-btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px #00a78f}.lk-btn-primary:active{transform:translateY(2px);box-shadow:0 2px #00a78f}.lk-btn-secondary{background:var(--lk-bianco);color:var(--lk-blu-notte);box-shadow:inset 0 0 0 2px var(--lk-blu-notte)}.lk-btn-secondary:hover{background:var(--lk-blu-notte);color:#fff}.lk-btn-warning{background:var(--lk-giallo-matita);color:var(--lk-blu-notte);box-shadow:0 6px #c9a800}.lk-btn-danger{background:var(--lk-rosso-corallo);color:#fff;box-shadow:0 6px #c73b3b}.site-banner{background:var(--lk-bianco);border-bottom:1px solid var(--lk-gray-100);justify-content:center;align-items:center;padding:20px 24px;display:flex}.site-banner img{width:auto;max-height:110px;display:block}.lk-nav-wrap{padding:16px 20px 0}.lk-navbar{background:var(--lk-bianco);border-radius:var(--radius-pill);box-shadow:var(--shadow-card);align-items:center;gap:16px;max-width:1200px;margin:0 auto;padding:8px 12px 8px 20px;display:flex}.lk-navbar-brand{flex-shrink:0;align-items:center;gap:10px;display:flex;text-decoration:none!important}.lk-navbar-brand:hover{text-decoration:none!important}.lk-navbar-wordmark{font-weight:var(--fw-bold);color:var(--lk-blu-notte);letter-spacing:-.01em;font-size:1.1rem}.lk-navbar-links{flex:1;justify-content:center;gap:4px;display:flex}.lk-navbar-link{border-radius:var(--radius-pill);font-weight:var(--fw-bold);transition:background var(--dur-base) var(--ease-out);padding:9px 16px;font-size:.875rem;color:var(--lk-blu-notte)!important;text-decoration:none!important}.lk-navbar-link:hover{background:var(--lk-gray-100);text-decoration:none!important}.lk-navbar-link.active{background:var(--lk-gray-100)}.lk-navbar-link.verde{color:var(--lk-verde-kids)!important}.lk-navbar-link.verde:hover{background:var(--lk-verde-10)}.lk-navbar-cta{background:var(--lk-verde-kids);font-weight:var(--fw-bold);letter-spacing:var(--ls-cap);text-transform:uppercase;border-radius:var(--radius-pill);transition:transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out);flex-shrink:0;align-items:center;padding:10px 22px;font-size:.8125rem;display:inline-flex;box-shadow:0 5px #00a78f;color:#fff!important;text-decoration:none!important}.lk-navbar-cta:hover{transform:translateY(-2px);box-shadow:0 7px #00a78f}.lk-navbar-cta:active{transform:translateY(2px);box-shadow:0 2px #00a78f}@media (width<=768px){.lk-nav-wrap{display:none}}.lk-footer{background:var(--lk-bianco);border-top:1px solid var(--lk-gray-200);margin-top:auto;padding:40px 24px 24px}.lk-footer-inner{border-bottom:1px solid var(--lk-gray-100);grid-template-columns:1.6fr .8fr .8fr;gap:40px;max-width:1200px;margin:0 auto;padding-bottom:24px;display:grid}.lk-footer-brand .lk-footer-logo{align-items:center;gap:10px;margin-bottom:12px;display:flex;text-decoration:none!important}.lk-footer-brand .lk-footer-logo b{font-size:1.05rem;font-weight:var(--fw-bold);color:var(--lk-blu-notte)}.lk-footer-brand p{color:var(--lk-gray-500);max-width:300px;font-size:.8125rem;line-height:1.6;font-weight:var(--fw-regular);margin:0}.lk-footer-col-heading{color:var(--lk-blu-notte);text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px;font-size:.75rem;font-weight:800}.lk-footer-col-link{transition:color var(--dur-fast) var(--ease-out);margin-bottom:8px;font-size:.875rem;font-weight:600;display:block;color:var(--lk-gray-500)!important;text-decoration:none!important}.lk-footer-col-link:hover{color:var(--lk-verde-kids)!important}.lk-footer-bottom{max-width:1200px;color:var(--lk-gray-400);font-size:.75rem;font-weight:var(--fw-regular);flex-wrap:wrap;justify-content:space-between;gap:8px;margin:20px auto 0;display:flex}@media (width<=768px){.lk-footer-inner{grid-template-columns:1fr;gap:24px}.lk-footer-bottom{flex-direction:column;gap:4px}}.page-hero{background:linear-gradient(135deg,#e0f9f5 0%,#f4fbfa 100%);border:1px solid #c2f4eb;border-radius:28px;margin-bottom:30px;padding:44px 52px;position:relative;overflow:hidden}.page-hero:before{opacity:.18;font-size:9rem;line-height:1;position:absolute;top:50%;right:40px;transform:translateY(-50%)}.page-hero h1{font-family:var(--font-primary);color:var(--lk-blu-notte);margin-bottom:12px;font-size:2.4rem;font-weight:700}.page-hero p{color:var(--lk-gray-600);max-width:520px;margin:0;font-size:1.1rem;line-height:1.6}@media (width<=640px){.page-hero{padding:32px 26px}.page-hero h1{font-size:1.8rem}.page-hero:before{display:none}}:root{--primary:#f59e0b;--primary-dark:#d97706;--primary-light:#fef3c7;--accent:#10b981;--luca:#3b82f6;--luca-light:#dbeafe;--giulia:#ec4899;--giulia-light:#fce7f3;--bg:#fffbeb;--text:#1e293b;--radius:16px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-primary);background:var(--bg-page);color:var(--text);text-transform:uppercase;min-height:100vh;font-weight:600;overflow-x:hidden}.game-container{z-index:1;flex-direction:column;gap:16px;max-width:720px;margin:0 auto;padding:16px 16px 40px;display:flex;position:relative}.game-header{text-align:center}.back-link{color:var(--primary-dark);opacity:.8;margin-bottom:8px;font-size:.8rem;text-decoration:none;display:inline-block}.back-link:hover{opacity:1}.game-header h1{font-family:var(--font-primary);color:var(--primary-dark);font-size:clamp(1.6rem,5vw,2.4rem);line-height:1.1}.subtitle{color:#64748b;margin-top:4px;font-size:1rem}.guide-panel{border-radius:var(--radius);background:#fff;align-items:center;gap:10px;padding:12px 16px;font-size:1rem;display:flex;box-shadow:0 2px 12px #00000014}.guide-icon{flex-shrink:0;font-size:1.4rem}.difficulty-screen{flex-direction:column;align-items:center;gap:16px;display:flex}.diff-title{font-family:var(--font-primary);color:var(--text);font-size:1.15rem}.diff-buttons{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.diff-btn{cursor:pointer;min-width:110px;font-family:var(--font-primary);background:#fff;border:3px solid;border-radius:16px;flex-direction:column;align-items:center;gap:5px;padding:14px 18px;transition:transform .15s,box-shadow .15s;display:flex}.diff-btn:hover{transform:translateY(-4px);box-shadow:0 8px 20px #00000024}.diff-btn:active{transform:translateY(2px)}.diff-easy{border-color:#10b981}.diff-med{border-color:#f59e0b}.diff-hard{border-color:#7c3aed}.diff-stars{font-size:1.1rem;line-height:1}.diff-label{font-family:var(--font-primary);color:var(--text);font-size:1.05rem}.diff-desc{color:#6b7280;text-transform:none;font-size:.68rem}.problem-card{border-radius:var(--radius);border-left:6px solid var(--primary);background:#fff;padding:20px 20px 16px;position:relative;box-shadow:0 4px 20px #0000001a}.level-badge{background:var(--primary);color:#fff;letter-spacing:.05em;border-radius:20px;margin-bottom:10px;padding:3px 10px;font-size:.75rem;font-weight:800;display:inline-block}.problem-text{color:var(--text);font-size:1.15rem;line-height:1.6}.problem-text strong{color:var(--primary-dark);font-size:1.3em}.characters-section{flex-direction:column;gap:3px;display:flex}.char-panel{border-radius:var(--radius);background:#fff;flex-direction:row;align-items:center;gap:12px;padding:10px 14px;display:flex;box-shadow:0 2px 12px #00000014}.luca-panel{border-left:6px solid var(--luca)}.giulia-panel{border-left:6px solid var(--giulia)}.char-header{flex-direction:column;flex-shrink:0;align-items:center;gap:2px;width:70px;display:flex}.char-avatar{font-size:2.4rem}.char-name{font-family:var(--font-primary);font-size:1.05rem}.luca-panel .char-name{color:var(--luca)}.giulia-panel .char-name{color:var(--giulia)}.char-zone{background:#f8fafc;border-radius:10px;flex-wrap:wrap;flex:1;align-content:center;gap:3px;min-height:80px;padding:8px 10px;transition:background .2s,box-shadow .2s;display:flex}.luca-panel .char-zone{border:2px dashed #bfdbfe}.giulia-panel .char-zone{border:2px dashed #fbcfe8}.char-zone.unknown-zone{border-style:dashed;border-width:2px}.luca-panel .char-zone.unknown-zone{border-color:var(--luca);background:var(--luca-light)}.giulia-panel .char-zone.unknown-zone{border-color:var(--giulia);background:var(--giulia-light)}.char-zone.drop-ready{box-shadow:inset 0 0 0 3px #10b98140;border-color:var(--accent)!important;background:#10b9811f!important;border-style:solid!important}.zone-item{cursor:pointer;-webkit-user-select:none;user-select:none;font-size:2rem;line-height:1;transition:transform .15s}.zone-item:hover{transform:scale(1.2)}.known-item{cursor:default;opacity:.9}.known-item:hover{transform:none}.zone-divider{background:var(--primary-dark);opacity:.7;border-radius:3px;flex-shrink:0;align-self:stretch;width:3px;min-height:1.6rem;margin:0 4px}.char-count{font-family:var(--font-primary);text-align:center;flex-shrink:0;width:36px;font-size:1.6rem}.luca-panel .char-count{color:var(--luca)}.giulia-panel .char-count{color:var(--giulia)}.vs-divider{font-family:var(--font-primary);color:#cbd5e1;text-align:center;letter-spacing:.1em;font-size:.85rem}.bank-section{border-radius:var(--radius);background:#fff;padding:14px 16px;box-shadow:0 2px 12px #00000014}.bank-label{color:#64748b;letter-spacing:.04em;margin-bottom:10px;font-size:.85rem;font-weight:800}.bank-items{touch-action:none;flex-wrap:wrap;gap:6px;display:flex}.bank-item{cursor:grab;-webkit-user-select:none;user-select:none;touch-action:none;font-size:2.2rem;line-height:1;transition:transform .15s}.bank-item:hover{transform:scale(1.2)}.bank-item:active{cursor:grabbing;transform:scale(1.3)}.drag-ghost{pointer-events:none;z-index:1000;filter:drop-shadow(0 4px 10px #0000004d);font-size:2rem;line-height:1;position:fixed;transform:scale(1.3)rotate(8deg)}.main-actions{justify-content:center;gap:12px;display:flex}.controlla-btn{font-family:var(--font-primary);cursor:pointer;background:var(--lk-giallo-matita);color:var(--lk-blu-notte);border:none;border-radius:50px;padding:14px 36px;font-size:1.2rem;transition:transform .15s,box-shadow .15s;box-shadow:0 6px #c9a800}.controlla-btn:hover{transform:translateY(-2px);box-shadow:0 8px #c9a800}.controlla-btn:active{transform:translateY(4px);box-shadow:0 2px #c9a800}.progress-section{justify-content:center;display:flex}.progress-dots{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.dot{background:#e2e8f0;border-radius:50%;width:12px;height:12px;transition:background .3s,transform .3s}.dot.done{background:var(--accent)}.dot.current{background:var(--primary);transform:scale(1.3)}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-6px)}40%{transform:translate(6px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}.shake{animation:.4s shake}@keyframes popIn{0%{opacity:0;transform:scale(0)}70%{transform:scale(1.2)}to{opacity:1;transform:scale(1)}}.pop-in{animation:.25s popIn}.modal-overlay{z-index:500;background:#0000008c;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal-content{text-align:center;background:#fff;border-radius:24px;width:100%;max-width:380px;padding:36px 32px;box-shadow:0 20px 60px #00000040}.modal-emoji{margin-bottom:8px;font-size:3.5rem}.modal-content h2{font-family:var(--font-primary);color:var(--primary-dark);margin-bottom:10px;font-size:2rem}.modal-content p{color:#475569;margin-bottom:12px;font-size:1.1rem}.modal-equation{font-family:var(--font-primary);color:var(--primary-dark);background:var(--primary-light);border-radius:12px;margin-bottom:20px;padding:10px 20px;font-size:2.2rem;display:inline-block}.next-btn{font-family:var(--font-primary);background:var(--lk-verde-kids);color:var(--lk-blu-notte);border-radius:var(--radius-pill);cursor:pointer;border:none;padding:14px 32px;font-size:1.2rem;transition:transform .15s,box-shadow .15s;box-shadow:0 6px #00a78f}.next-btn:hover{transform:translateY(-2px);box-shadow:0 8px #00a78f}.next-btn:active{transform:translateY(4px);box-shadow:0 2px #00a78f}.confetti-container{pointer-events:none;z-index:999;position:fixed;inset:0;overflow:hidden}@keyframes confettiFall{0%{opacity:1;transform:translateY(-20px)rotate(0)}to{opacity:0;transform:translateY(100vh)rotate(720deg)}}.confetti-piece{border-radius:2px;animation:2s ease-in forwards confettiFall;position:absolute;top:-10px}.back-link-btn{cursor:pointer;font-family:inherit;font-size:inherit;font-weight:inherit;background:0 0;border:none;padding:0}@media (width<=480px){.char-panel{gap:8px;padding:8px 10px}.char-header{width:56px}.char-avatar{font-size:1.8rem}.char-name{font-size:.85rem}.char-zone{min-height:64px}.zone-item{font-size:1.6rem}.bank-item{font-size:1.8rem}}