:root{--primary: #2563eb;--primary-dark: #1d4ed8;--secondary: #64748b;--background: #f8fafc;--card: #ffffff;--border: #e2e8f0;--text: #0f172a;--text-muted: #64748b;--success: #10b981;--warning: #f59e0b;--error: #ef4444}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--background);color:var(--text);line-height:1.5}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.card{background:var(--card);border:1px solid var(--border);border-radius:8px;padding:1.5rem;box-shadow:0 1px 3px #0000001a}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:6px;font-size:.875rem;font-weight:500;cursor:pointer;border:none;text-decoration:none;transition:all .2s}.btn-primary{background-color:var(--primary);color:#fff}.btn-primary:hover{background-color:var(--primary-dark)}.btn-secondary{background-color:transparent;color:var(--secondary);border:1px solid var(--border)}.btn-secondary:hover{background-color:var(--background)}.grid{display:grid;gap:1.5rem}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.stat-card{text-align:center}.stat-number{font-size:2rem;font-weight:700;color:var(--primary)}.stat-label{color:var(--text-muted);font-size:.875rem;margin-top:.5rem}.toggle{display:inline-flex;align-items:center;gap:.5rem;margin:1rem 0}.toggle input{width:40px;height:20px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-color:var(--border);border-radius:10px;position:relative;cursor:pointer;transition:background-color .2s}.toggle input:checked{background-color:var(--primary)}.toggle input:before{content:"";position:absolute;width:16px;height:16px;border-radius:50%;background-color:#fff;top:2px;left:2px;transition:transform .2s}.toggle input:checked:before{transform:translate(20px)}.header{padding:2rem 0;border-bottom:1px solid var(--border);margin-bottom:2rem}.header h1{font-size:1.875rem;font-weight:700;margin-bottom:.5rem}.header p{color:var(--text-muted)}