:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-secondary: #0f172a;--color-accent: #06b6d4;--color-success: #10b981;--color-error: #ef4444;--color-warning: #f59e0b;--color-bg: #ffffff;--color-bg-alt: #f8fafc;--color-border: #e2e8f0;--font-sans: system-ui, -apple-system, sans-serif;--radius-sm: 4px;--radius-md: 6px;--radius-lg: 8px;--radius-xl: 12px;--shadow-sm: 0 1px 2px rgba(0,0,0,.05);--shadow-md: 0 1px 3px rgba(0,0,0,.1);--shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1);--spacing-1: .25rem;--spacing-2: .5rem;--spacing-3: .75rem;--spacing-4: 1rem;--spacing-6: 1.5rem;--spacing-8: 2rem;--spacing-12: 3rem;--spacing-16: 4rem}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--color-bg);color:var(--color-secondary);line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{background:none;border:none;cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit}.container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--spacing-4)}.btn{display:inline-flex;align-items:center;justify-content:center;padding:var(--spacing-2) var(--spacing-4);border-radius:var(--radius-md);font-weight:500;transition:all .2s;cursor:pointer}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-dark)}.card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:var(--spacing-6);border:1px solid var(--color-border)}.form-group{margin-bottom:var(--spacing-4)}.form-label{display:block;margin-bottom:var(--spacing-2);font-weight:500;font-size:.875rem}.form-input{width:100%;padding:var(--spacing-2) var(--spacing-3);border:1px solid var(--color-border);border-radius:var(--radius-md);outline:none;transition:border-color .2s}.form-input:focus{border-color:var(--color-primary)}.grid{display:grid;gap:var(--spacing-6)}@media (min-width: 640px){.grid-cols-2{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1024px){.grid-cols-3{grid-template-columns:repeat(3,1fr)}.grid-cols-4{grid-template-columns:repeat(4,1fr)}}