:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}#root{text-align:center;border-inline:1px solid var(--border);box-sizing:border-box;flex-direction:column;width:1126px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}body{margin:0}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}:root{--primary:#6366f1;--primary-dark:#4f46e5;--secondary:#ec4899;--bg:#0f172a;--card-bg:#1e293b;--text:#f8fafc;--text-dim:#94a3b8;--success:#22c55e;--error:#ef4444}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body{background-color:var(--bg);color:var(--text);overflow-x:hidden}.container{flex-direction:column;max-width:600px;min-height:100vh;margin:0 auto;padding:20px;display:flex}header{text-align:center;margin-bottom:30px;padding-top:20px}h1{background:linear-gradient(to right, var(--primary), var(--secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:10px;font-size:2rem}.menu-grid{grid-template-columns:1fr 1fr;gap:15px;display:grid}.menu-card{background:var(--card-bg);text-align:center;cursor:pointer;border:1px solid #ffffff1a;border-radius:16px;flex-direction:column;align-items:center;gap:10px;padding:20px;transition:transform .2s,background .2s;display:flex}.menu-card:hover{background:#334155;transform:translateY(-5px)}.menu-card i{color:var(--primary)}.game-container{flex-direction:column;flex:1;display:flex}.progress-bar{background:#334155;border-radius:4px;width:100%;height:8px;margin-bottom:20px;overflow:hidden}.progress-fill{background:var(--primary);height:100%;transition:width .3s}.flashcard{perspective:1000px;width:100%;height:300px;margin-bottom:20px}.flashcard-inner{text-align:center;width:100%;height:100%;transform-style:preserve-3d;cursor:pointer;transition:transform .6s;position:relative}.flashcard.flipped .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{backface-visibility:hidden;background:var(--card-bg);border:2px solid var(--primary);border-radius:24px;flex-direction:column;justify-content:center;align-items:center;width:100%;height:100%;padding:30px;display:flex;position:absolute;box-shadow:0 10px 25px -5px #0000004d}.flashcard-back{background:#334155;transform:rotateY(180deg)}.term{margin-bottom:10px;font-size:2.5rem;font-weight:700}.definition{font-size:1.2rem;line-height:1.5}.quiz-card{background:var(--card-bg);border-radius:20px;margin-bottom:20px;padding:25px}.question{margin-bottom:20px;font-size:1.3rem;font-weight:600}.options{flex-direction:column;gap:12px;display:flex}.option-btn{color:#fff;text-align:left;cursor:pointer;background:#334155;border:1px solid #ffffff1a;border-radius:12px;padding:15px;font-size:1rem;transition:all .2s}.option-btn:hover{background:#475569}.option-btn.correct{background:var(--success);border-color:var(--success)}.option-btn.wrong{background:var(--error);border-color:var(--error)}.match-grid{grid-template-columns:1fr 1fr;gap:10px;margin-top:20px;display:grid}.match-item{background:var(--card-bg);cursor:pointer;text-align:center;border:2px solid #0000;border-radius:10px;justify-content:center;align-items:center;min-height:80px;padding:15px;font-size:.9rem;transition:all .2s;display:flex}.match-item.selected{border-color:var(--primary);background:#334155}.match-item.matched{visibility:hidden;opacity:0}.btn-primary{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:12px;margin-top:20px;padding:12px 24px;font-weight:700}.back-btn{color:var(--text-dim);cursor:pointer;background:0 0;border:none;align-items:center;gap:5px;margin-bottom:20px;display:flex}.footer-nav{text-align:center;color:var(--text-dim);margin-top:auto;padding:20px 0;font-size:.8rem}@media (width<=480px){.menu-grid{grid-template-columns:1fr}}