:root{--primary:#10b981;--primary-hover:#059669;--primary-light:#ecfdf5;--primary-border:#a7f3d0;--secondary:#6366f1;--secondary-hover:#4f46e5;--secondary-light:#eef2ff;--accent:#f59e0b;--accent-light:#fef3c7;--danger:#ef4444;--danger-light:#fee2e2;--danger-border:#fca5a5;--success:#10b981;--success-light:#d1fae5;--text-main:#1e293b;--text-muted:#64748b;--text-sub:#94a3b8;--bg-page:#f8fafc;--bg-card:#fff;--bg-surface:#f1f5f9;--border-color:#e2e8f0;--border-radius-sm:8px;--border-radius-md:14px;--border-radius-lg:20px;--border-radius-xl:28px;--shadow-sm:0 1px 3px #0000000f, 0 1px 2px #0000000a;--shadow-md:0 4px 6px -1px #00000012, 0 2px 4px -2px #0000000d;--shadow-lg:0 10px 15px -3px #00000014, 0 4px 6px -4px #0000000a;--shadow-xl:0 20px 25px -5px #0000001a, 0 8px 10px -6px #0000000a;--shadow-card:0 12px 30px -10px #10b98126}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text-main);background-color:var(--bg-page);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:Plus Jakarta Sans,system-ui,-apple-system,sans-serif;line-height:1.5}h1,h2,h3,h4,.font-heading{letter-spacing:-.02em;font-family:Lexend,system-ui,sans-serif}button{cursor:pointer;background:0 0;border:none;font-family:inherit}input,select,textarea{font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#f1f5f9}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}.card-container{perspective:1200px;width:100%;max-width:580px;margin:0 auto}.flashcard{width:100%;min-height:380px;transform-style:preserve-3d;cursor:pointer;transition:transform .6s cubic-bezier(.4,0,.2,1);position:relative}.flashcard.flipped{transform:rotateY(180deg)}.card-face{backface-visibility:hidden;border-radius:var(--border-radius-xl);width:100%;height:100%;box-shadow:var(--shadow-xl);border:2px solid var(--border-color);background:#fff;flex-direction:column;justify-content:space-between;padding:32px;display:flex;position:absolute;top:0;left:0}.card-back{border-color:var(--primary-border);background:linear-gradient(145deg,#fff 0%,#f0fdf4 100%);transform:rotateY(180deg)}.card-front{background:linear-gradient(145deg,#fff 0%,#f8fafc 100%)}.badge{text-transform:uppercase;letter-spacing:.05em;border-radius:9999px;align-items:center;gap:6px;padding:4px 12px;font-size:.8rem;font-weight:600;display:inline-flex}.badge-green{background:var(--primary-light);color:var(--primary-hover);border:1px solid var(--primary-border)}.badge-purple{background:var(--secondary-light);color:var(--secondary);border:1px solid #c7d2fe}.badge-amber{background:var(--accent-light);color:#b45309;border:1px solid #fde68a}.btn-primary{background:var(--primary);color:#fff;border-radius:var(--border-radius-md);justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-weight:600;transition:all .2s;display:inline-flex;box-shadow:0 4px 12px #10b98140}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 6px 16px #10b98159}.btn-secondary{color:var(--text-main);border:1px solid var(--border-color);border-radius:var(--border-radius-md);background:#fff;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-weight:600;transition:all .2s;display:inline-flex}.btn-secondary:hover{background:var(--bg-surface);border-color:#cbd5e1}@keyframes popIn{0%{opacity:0;transform:scale(.92)}to{opacity:1;transform:scale(1)}}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-6px)}40%,80%{transform:translate(6px)}}.animate-pop{animation:.3s cubic-bezier(.16,1,.3,1) forwards popIn}.animate-shake{animation:.4s ease-in-out shake}.app-shell.svelte-12qhfyh{flex-direction:column;min-height:100vh;display:flex}.header.svelte-12qhfyh{border-bottom:1px solid var(--border-color);z-index:50;background:#fff;position:sticky;top:0;box-shadow:0 1px 4px #0000000a}.header-inner.svelte-12qhfyh{justify-content:space-between;align-items:center;gap:20px;max-width:1240px;margin:0 auto;padding:12px 24px;display:flex}.brand.svelte-12qhfyh{color:inherit;flex-shrink:0;align-items:center;gap:12px;text-decoration:none;display:flex}.brand-icon.svelte-12qhfyh{background:linear-gradient(135deg,#10b981 0%,#059669 100%);border-radius:12px;justify-content:center;align-items:center;width:44px;height:44px;font-size:24px;display:flex;box-shadow:0 4px 10px #10b98140}.brand-title.svelte-12qhfyh{color:#0f172a;font-family:Lexend,sans-serif;font-size:1.15rem;font-weight:800;line-height:1.2;display:block}.brand-sub.svelte-12qhfyh{color:var(--text-muted);font-size:.75rem;display:block}.nav-links.svelte-12qhfyh{align-items:center;gap:6px;padding:4px 0;display:flex;overflow-x:auto}.nav-link.svelte-12qhfyh{border-radius:var(--border-radius-md);color:var(--text-muted);white-space:nowrap;align-items:center;gap:7px;padding:8px 14px;font-size:.9rem;font-weight:600;text-decoration:none;transition:all .15s;display:flex}.nav-link.svelte-12qhfyh:hover{background:var(--bg-surface);color:var(--text-main)}.nav-link.active.svelte-12qhfyh{background:var(--primary-light);color:var(--primary-hover)}.nav-badge.svelte-12qhfyh{color:#4338ca;background:#e0e7ff;border-radius:9999px;padding:2px 7px;font-size:.68rem;font-weight:700}.nav-link.active.svelte-12qhfyh .nav-badge:where(.svelte-12qhfyh){color:#065f46;background:#a7f3d0}.btn-exam-fast.svelte-12qhfyh{color:#fff;white-space:nowrap;background:linear-gradient(135deg,#ef4444 0%,#dc2626 100%);border-radius:9999px;align-items:center;gap:6px;padding:8px 16px;font-size:.85rem;font-weight:700;text-decoration:none;transition:all .2s;display:inline-flex;box-shadow:0 4px 12px #dc262640}.btn-exam-fast.svelte-12qhfyh:hover{transform:translateY(-1px);box-shadow:0 6px 14px #dc262659}.main-content.svelte-12qhfyh{flex:1;width:100%;max-width:1240px;margin:0 auto;padding:24px}.footer.svelte-12qhfyh{border-top:1px solid var(--border-color);background:#fff;margin-top:auto;padding:20px 24px}.footer-inner.svelte-12qhfyh{max-width:1240px;color:var(--text-muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin:0 auto;font-size:.85rem;display:flex}.footer-ref.svelte-12qhfyh{color:var(--text-sub);margin-top:4px;font-size:.78rem}@media (width<=900px){.header-inner.svelte-12qhfyh{flex-direction:column;align-items:stretch;gap:12px}.brand-sub.svelte-12qhfyh{display:none}.nav-links.svelte-12qhfyh{justify-content:flex-start}.btn-exam-fast.svelte-12qhfyh{display:none}}