:root{--primary-color: #1a73e8;--primary-hover: #1557b0;--secondary-color: #34a853;--danger-color: #ea4335;--danger-hover: #d33b2c;--text-primary: #202124;--text-secondary: #5f6368;--text-light: #80868b;--background: #ffffff;--surface: #f8f9fa;--border-light: #e8eaed;--border-medium: #dadce0;--shadow-light: 0 1px 3px rgba(0, 0, 0, .12), 0 1px 2px rgba(0, 0, 0, .24);--shadow-medium: 0 3px 6px rgba(0, 0, 0, .16), 0 3px 6px rgba(0, 0, 0, .23);--shadow-heavy: 0 10px 20px rgba(0, 0, 0, .19), 0 6px 6px rgba(0, 0, 0, .23);--border-radius: 8px;--border-radius-large: 12px;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem}*{box-sizing:border-box}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:var(--text-primary);background-color:var(--surface);font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{margin:0 0 var(--spacing-md) 0;font-weight:600;line-height:1.3}h1{font-size:2rem}h2{font-size:1.5rem}h3{font-size:1.25rem}h4{font-size:1.125rem}p{margin:0 0 var(--spacing-md) 0}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--spacing-sm) var(--spacing-md);border:none;border-radius:var(--border-radius);font-size:.875rem;font-weight:500;text-decoration:none;cursor:pointer;transition:all .2s ease;min-height:44px;gap:var(--spacing-sm)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);box-shadow:var(--shadow-medium)}.btn-secondary{background-color:#fff;color:var(--primary-color);border:1px solid var(--border-medium)}.btn-secondary:hover:not(:disabled){background-color:var(--surface);box-shadow:var(--shadow-light)}.btn-danger{background-color:var(--danger-color);color:#fff}.btn-danger:hover:not(:disabled){background-color:var(--danger-hover)}.btn-google{background-color:#fff;color:var(--text-primary);border:1px solid var(--border-medium);padding-left:var(--spacing-lg);position:relative}.btn-google:hover:not(:disabled){box-shadow:var(--shadow-medium)}.btn-google:before{content:"";position:absolute;left:var(--spacing-md);width:18px;height:18px;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%234285F4' d='M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z'/%3E%3Cpath fill='%2334A853' d='M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z'/%3E%3Cpath fill='%23FBBC05' d='M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z'/%3E%3Cpath fill='%23EA4335' d='M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z'/%3E%3C/svg%3E");background-size:contain;background-repeat:no-repeat}.form-group{margin-bottom:var(--spacing-md)}label{display:block;margin-bottom:var(--spacing-xs);font-weight:500;color:var(--text-primary)}input[type=text],input[type=email],input[type=password]{width:100%;padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--border-medium);border-radius:var(--border-radius);font-size:1rem;transition:border-color .2s ease;min-height:44px}input[type=text]:focus,input[type=email]:focus,input[type=password]:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #1a73e833}.radio-group{display:flex;gap:var(--spacing-sm);margin-top:var(--spacing-sm)}.radio-button{flex:1;position:relative}.radio-button input[type=radio]{position:absolute;opacity:0;width:0;height:0}.radio-button label{display:block;padding:var(--spacing-sm) var(--spacing-md);background-color:#fff;border:2px solid var(--border-medium);border-radius:var(--border-radius);text-align:center;cursor:pointer;transition:all .2s ease;font-weight:500;min-height:44px;display:flex;align-items:center;justify-content:center}.radio-button input[type=radio]:checked+label{background-color:var(--primary-color);color:#fff;border-color:var(--primary-color)}.radio-button input[type=radio]:focus+label{box-shadow:0 0 0 2px #1a73e833}.card{background:#fff;border-radius:var(--border-radius-large);box-shadow:var(--shadow-light);overflow:hidden;transition:box-shadow .2s ease}.card:hover{box-shadow:var(--shadow-medium)}.card-content{padding:var(--spacing-lg)}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-md)}.container-sm{max-width:600px;margin:0 auto;padding:0 var(--spacing-md)}.grid{display:grid;gap:var(--spacing-lg)}.grid-auto{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.text-center{text-align:center}.text-muted{color:var(--text-secondary)}.text-light{color:var(--text-light)}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.mb-0{margin-bottom:0!important}.mb-1{margin-bottom:var(--spacing-xs)!important}.mb-2{margin-bottom:var(--spacing-sm)!important}.mb-3{margin-bottom:var(--spacing-md)!important}.mb-4{margin-bottom:var(--spacing-lg)!important}.mt-0{margin-top:0!important}.mt-1{margin-top:var(--spacing-xs)!important}.mt-2{margin-top:var(--spacing-sm)!important}.mt-3{margin-top:var(--spacing-md)!important}.mt-4{margin-top:var(--spacing-lg)!important}@media (max-width: 768px){.container{padding:0 var(--spacing-sm)}h1{font-size:1.75rem}h2{font-size:1.375rem}.btn{padding:var(--spacing-md) var(--spacing-lg);font-size:1rem}}@media (max-width: 480px){.grid{gap:var(--spacing-md)}.grid-auto{grid-template-columns:1fr}.radio-group{flex-direction:column}.radio-button label{padding:var(--spacing-md)}}