body { font-family: sans-serif; background: #f0f2f5; padding: 20px; }
.card { background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); margin-bottom: 20px; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px; border: 1px solid #ddd; text-align: left; }
th { background: #2563eb; color: white; }
.btn { padding: 8px 12px; border: none; border-radius: 4px; color: white; cursor: pointer; text-decoration: none; display: inline-block; }
.btn-blue { background: #2563eb; }
.btn-red { background: #dc2626; }
input { padding: 8px; border: 1px solid #ccc; border-radius: 4px; width: 100%; box-sizing: border-box; margin: 5px 0; }