@import"https://fonts.googleapis.com/css2?family=Kantumruy+Pro:ital,wght@0,400;0,500;0,600;0,700;1,400;1,600&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Outfit:wght@500;600;700;800&display=swap";:root{--font-latin: "Plus Jakarta Sans", system-ui, -apple-system, sans-serif;--font-khmer: "Kantumruy Pro", "Plus Jakarta Sans", system-ui, sans-serif;--font-heading: "Outfit", "Kantumruy Pro", sans-serif;--bg-app: #f8fafc;--bg-surface: #ffffff;--bg-surface-hover: #f1f5f9;--bg-surface-subtle: #f8fafc;--border-color: #e2e8f0;--border-focus: #3b82f6;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--text-inverse: #ffffff;--primary: #2563eb;--primary-hover: #1d4ed8;--primary-subtle: #eff6ff;--primary-border: #bfdbfe;--accent-emerald: #059669;--accent-emerald-subtle: #ecfdf5;--accent-amber: #d97706;--accent-amber-subtle: #fffbeb;--accent-rose: #dc2626;--accent-rose-subtle: #fef2f2;--accent-indigo: #4f46e5;--accent-indigo-subtle: #eef2ff;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-card: 0 1px 3px 0 rgba(0, 0, 0, .08), 0 1px 2px -1px rgba(0, 0, 0, .08);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .08), 0 2px 4px -2px rgba(0, 0, 0, .05);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -4px rgba(0, 0, 0, .05);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-full: 9999px}[data-theme=dark]{--bg-app: #090d16;--bg-surface: #131b2e;--bg-surface-hover: #1e293b;--bg-surface-subtle: #0d1527;--border-color: #1e293b;--border-focus: #60a5fa;--text-primary: #f8fafc;--text-secondary: #94a3b8;--text-muted: #64748b;--text-inverse: #0f172a;--primary: #3b82f6;--primary-hover: #60a5fa;--primary-subtle: rgba(59, 130, 246, .15);--primary-border: rgba(59, 130, 246, .35);--accent-emerald: #10b981;--accent-emerald-subtle: rgba(16, 185, 129, .15);--accent-amber: #f59e0b;--accent-amber-subtle: rgba(245, 158, 11, .15);--accent-rose: #ef4444;--accent-rose-subtle: rgba(239, 68, 68, .15);--accent-indigo: #6366f1;--accent-indigo-subtle: rgba(99, 102, 241, .15);--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .5);--shadow-card: 0 2px 4px 0 rgba(0, 0, 0, .4), 0 1px 2px -1px rgba(0, 0, 0, .4);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, .6)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-latin);background-color:var(--bg-app);color:var(--text-primary);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .25s ease,color .25s ease}.font-khmer,[lang=km] body,[lang=km]{font-family:var(--font-khmer)!important;line-height:1.65}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;color:var(--text-primary);letter-spacing:-.015em;line-height:1.25}[lang=km] h1,[lang=km] h2,[lang=km] h3,[lang=km] h4{font-family:var(--font-khmer)!important;line-height:1.4}p{color:var(--text-secondary)}.sk-card{background-color:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);transition:all .2s cubic-bezier(.4,0,.2,1)}.sk-card-interactive:hover{border-color:var(--primary-border);box-shadow:var(--shadow-md);transform:translateY(-2px)}.btn{font-family:inherit;font-weight:600;font-size:.95rem;padding:.65rem 1.25rem;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;transition:all .15s ease-in-out;text-decoration:none;line-height:1.35;-webkit-user-select:none;user-select:none}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--primary);color:#fff;box-shadow:0 1px 3px #2563eb4d}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);box-shadow:0 4px 10px #2563eb66;transform:translateY(-1px)}.btn-secondary{background-color:var(--bg-surface);color:var(--text-primary);border-color:var(--border-color)}.btn-secondary:hover:not(:disabled){background-color:var(--bg-surface-hover);border-color:var(--text-muted)}.btn-success{background-color:var(--accent-emerald);color:#fff}.btn-success:hover:not(:disabled){filter:brightness(1.08)}.btn-danger{background-color:var(--accent-rose);color:#fff}.btn-ghost{background-color:transparent;color:var(--text-secondary)}.btn-ghost:hover:not(:disabled){background-color:var(--bg-surface-hover);color:var(--text-primary)}.sk-input{width:100%;padding:.7rem 1rem;font-family:inherit;font-size:.95rem;color:var(--text-primary);background-color:var(--bg-surface);border:1.5px solid var(--border-color);border-radius:var(--radius-md);outline:none;transition:border-color .15s ease,box-shadow .15s ease}.sk-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-subtle)}.sk-input::placeholder{color:var(--text-muted)}.sk-badge{display:inline-flex;align-items:center;gap:.35rem;padding:.25rem .65rem;border-radius:var(--radius-full);font-size:.75rem;font-weight:700;letter-spacing:.02em;text-transform:uppercase}.sk-badge-primary{background-color:var(--primary-subtle);color:var(--primary);border:1px solid var(--primary-border)}.sk-badge-emerald{background-color:var(--accent-emerald-subtle);color:var(--accent-emerald)}.sk-badge-amber{background-color:var(--accent-amber-subtle);color:var(--accent-amber)}.sk-badge-rose{background-color:var(--accent-rose-subtle);color:var(--accent-rose)}.quiz-answer-btn{padding:1.25rem 1.5rem;border-radius:var(--radius-lg);font-family:inherit;font-size:1.1rem;font-weight:700;display:flex;align-items:center;gap:1rem;cursor:pointer;border:2px solid transparent;transition:all .15s ease;-webkit-user-select:none;user-select:none;text-align:left;box-shadow:var(--shadow-sm);color:#fff}.quiz-answer-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-md)}.quiz-opt-red{background:linear-gradient(135deg,#e11d48,#be123c)}.quiz-opt-blue{background:linear-gradient(135deg,#2563eb,#1d4ed8)}.quiz-opt-amber{background:linear-gradient(135deg,#d97706,#b45309)}.quiz-opt-emerald{background:linear-gradient(135deg,#059669,#047857)}@media (max-width: 768px){.quiz-answer-btn{padding:1rem;font-size:1rem}}::-webkit-scrollbar{width:7px;height:7px}::-webkit-scrollbar-track{background:var(--bg-app)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}