:root{--primary: #2563eb;--primary-hover: #1d4ed8;--bg-main: #f8fafc;--bg-card: #ffffff;--text-main: #0f172a;--text-muted: #64748b;--border: #e2e8f0;--accent: #f43f5e;--success: #22c55e;--radius: 12px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--bg-main);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}.app-container{display:flex;min-height:100vh}.main-content{flex:1;padding:2rem;overflow-y:auto}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.625rem 1.25rem;border:none;border-radius:8px;font-weight:600;font-size:.875rem;cursor:pointer;transition:all .2s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:#fff;color:#64748b;border:1px solid #e2e8f0}.btn-secondary:hover{background:#f8fafc;border-color:#cbd5e1}input,select,textarea{font-family:inherit}