:root{--primary: #2563eb;--primary-dark: #1e40af;--bg: #f3f4f6;--card: #ffffff;--text: #111827;--muted: #6b7280;--border: #e5e7eb;--danger: #dc2626;--success: #16a34a}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}.btn{padding:8px 16px;border:none;border-radius:6px;cursor:pointer;font-size:14px;font-weight:500}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-danger{background:var(--danger);color:#fff}.card{background:var(--card);border-radius:8px;padding:20px;box-shadow:0 1px 3px #00000014}input,select,textarea{width:100%;padding:8px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px}table{width:100%;border-collapse:collapse}th,td{padding:10px;text-align:left;border-bottom:1px solid var(--border)}th{background:#f9fafb;font-weight:600}