.navbar{background:linear-gradient(135deg,#1e293b,#334155);color:#fff;padding:1.25rem 0;margin-bottom:2rem;box-shadow:0 4px 6px -1px #0000001a,0 2px 4px -1px #0000000f;border-bottom:1px solid rgba(255,255,255,.1)}.navbar .container{display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:0 2rem}@media (max-width: 768px){.navbar{padding:1rem 0;margin-bottom:1rem}.navbar .container{padding:0 1rem;flex-wrap:wrap}}.logo{font-size:1.5rem;font-weight:700;color:#fff;text-decoration:none;letter-spacing:-.025em;background:linear-gradient(135deg,#fff,#e2e8f0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;transition:all .3s ease}.logo:hover{transform:scale(1.02)}.app-logo{height:56px;width:auto;max-width:200px;object-fit:contain;filter:drop-shadow(0 2px 8px rgba(255,255,255,.3)) drop-shadow(0 4px 12px rgba(0,0,0,.2));transition:all .3s ease;image-rendering:-webkit-optimize-contrast;image-rendering:crisp-edges}.logo:hover .app-logo{filter:drop-shadow(0 4px 12px rgba(255,255,255,.4)) drop-shadow(0 6px 16px rgba(0,0,0,.3));transform:scale(1.05)}@media (max-width: 768px){.logo{font-size:1.25rem;gap:.75rem!important}.app-logo{height:48px;max-width:160px}}@media (max-width: 480px){.logo{font-size:1.125rem;gap:.5rem!important}.app-logo{height:40px;max-width:140px}}.nav-links{display:flex;gap:.5rem;align-items:center}.nav-links a{color:#ffffffe6;text-decoration:none;font-size:.9375rem;font-weight:500;padding:.625rem 1.25rem;border-radius:.5rem;transition:all .2s ease;position:relative;min-height:44px;display:flex;align-items:center}@media (max-width: 768px){.nav-links{width:100%;margin-top:.75rem;justify-content:flex-start;gap:.25rem}.nav-links a{font-size:.875rem;padding:.75rem 1rem;flex:1}}.nav-links a:before{content:"";position:absolute;bottom:.25rem;left:50%;transform:translate(-50%);width:0;height:2px;background:#fff;transition:width .3s ease}.nav-links a:hover{background-color:#ffffff1a;color:#fff}.nav-links a:hover:before{width:calc(100% - 2.5rem)}*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #6366f1;--primary-dark: #4f46e5;--primary-light: #818cf8;--secondary: #64748b;--secondary-dark: #475569;--success: #10b981;--success-dark: #059669;--danger: #ef4444;--danger-dark: #dc2626;--warning: #f59e0b;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-300: #d1d5db;--gray-400: #9ca3af;--gray-500: #6b7280;--gray-600: #4b5563;--gray-700: #374151;--gray-800: #1f2937;--gray-900: #111827;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--text-primary: #1e293b;--text-secondary: #64748b;--text-tertiary: #94a3b8;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow: 0 1px 3px 0 rgba(0, 0, 0, .1), 0 1px 2px 0 rgba(0, 0, 0, .06);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--radius-sm: .375rem;--radius: .5rem;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:linear-gradient(135deg,#f8fafc,#f1f5f9);color:var(--text-primary);line-height:1.6;min-height:100vh;font-size:16px}@media (max-width: 768px){body{font-size:15px}}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.container{max-width:1200px;margin:0 auto;padding:var(--spacing-lg)}@media (max-width: 768px){.container{padding:var(--spacing)}}.card{background:var(--bg-primary);border-radius:var(--radius-lg);padding:var(--spacing-xl);box-shadow:var(--shadow-lg);margin-bottom:var(--spacing-lg);border:1px solid var(--gray-200);transition:all .3s ease}.card:hover{box-shadow:var(--shadow-xl)}@media (max-width: 768px){.card{padding:var(--spacing-md);margin-bottom:var(--spacing);border-radius:var(--radius-md)}}.btn{padding:.625rem 1.25rem;border:none;border-radius:var(--radius);font-size:.875rem;font-weight:500;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;letter-spacing:.01em;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;justify-content:center;gap:.5rem;box-shadow:var(--shadow-sm);min-height:36px;line-height:1.4}@media (max-width: 768px){.btn{padding:.5625rem 1rem;font-size:.8125rem;min-height:36px}}.btn:hover:not(:disabled){transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn:active:not(:disabled){transform:translateY(0)}.btn-primary{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);color:#fff}.btn-primary:hover:not(:disabled){background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%)}.btn-secondary{background-color:var(--secondary);color:#fff}.btn-secondary:hover:not(:disabled){background-color:var(--secondary-dark)}.btn-success{background:linear-gradient(135deg,var(--success) 0%,var(--success-dark) 100%);color:#fff}.btn-success:hover:not(:disabled){background:linear-gradient(135deg,var(--success-dark) 0%,var(--success) 100%)}.btn-danger{background:linear-gradient(135deg,var(--danger) 0%,var(--danger-dark) 100%);color:#fff}.btn-danger:hover:not(:disabled){background:linear-gradient(135deg,var(--danger-dark) 0%,var(--danger) 100%)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}input[type=text],input[type=number],input[type=password],textarea,select{width:100%;padding:.875rem 1rem;border:2px solid var(--gray-300);border-radius:var(--radius-md);font-size:1rem;margin-bottom:var(--spacing-md);transition:all .2s ease;background-color:var(--bg-primary);color:var(--text-primary);font-family:inherit;min-height:44px;-webkit-appearance:none;-moz-appearance:none;appearance:none}@media (max-width: 768px){input[type=text],input[type=number],input[type=password],textarea,select{font-size:16px;padding:1rem}}input[type=text]:focus,input[type=number]:focus,input[type=password]:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #6366f11a}input[type=text]::placeholder,input[type=number]::placeholder,input[type=password]::placeholder,textarea::placeholder{color:var(--text-tertiary)}label{display:block;margin-bottom:var(--spacing-sm);font-weight:600;color:var(--text-primary);font-size:.9375rem}h1{font-size:2.25rem;font-weight:700;line-height:1.2;margin-bottom:var(--spacing-md);color:var(--text-primary);letter-spacing:-.025em}h2{font-size:1.875rem;font-weight:700;line-height:1.3;margin-bottom:var(--spacing-md);color:var(--text-primary);letter-spacing:-.025em}h3{font-size:1.5rem;font-weight:600;line-height:1.4;margin-bottom:var(--spacing);color:var(--text-primary)}h4{font-size:1.25rem;font-weight:600;line-height:1.4;margin-bottom:var(--spacing-sm);color:var(--text-primary)}@media (max-width: 768px){h1{font-size:1.75rem;margin-bottom:var(--spacing)}h2{font-size:1.5rem;margin-bottom:var(--spacing)}h3{font-size:1.25rem}h4{font-size:1.125rem}}.error{color:var(--danger-dark);background:linear-gradient(135deg,#fef2f2,#fee2e2);border:2px solid #fecaca;padding:1rem 1.25rem;border-radius:var(--radius-md);margin-bottom:var(--spacing-md);font-weight:500;box-shadow:var(--shadow-sm)}.success{color:var(--success-dark);background:linear-gradient(135deg,#ecfdf5,#d1fae5);border:2px solid #a7f3d0;padding:1rem 1.25rem;border-radius:var(--radius-md);margin-bottom:var(--spacing-md);font-weight:500;box-shadow:var(--shadow-sm)}.loading{text-align:center;padding:var(--spacing-xl);font-size:1.125rem;color:var(--text-secondary);font-weight:500}@media (max-width: 768px){.question-card{padding:1rem!important}.tokens-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))!important;gap:.75rem!important}.error,.success{padding:.875rem 1rem!important;font-size:.9375rem!important}input[type=radio],input[type=checkbox]{width:24px!important;height:24px!important;min-width:24px!important;min-height:24px!important}textarea{min-height:100px}}@media (max-width: 480px){.container{padding:.75rem}.card{padding:1rem}h1{font-size:1.5rem}h2{font-size:1.25rem}.tokens-grid{grid-template-columns:1fr 1fr!important}.session-details-grid{grid-template-columns:1fr!important}}@media (max-width: 1024px){.session-details-grid{grid-template-columns:1fr 350px!important}}@media (max-width: 768px){.session-details-grid{grid-template-columns:1fr!important}.session-details-grid>div:last-child{position:relative!important;top:auto!important;max-height:none!important}}