body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif; margin:0; }
.container { max-width: 980px; margin: 0 auto; padding: 1rem; }
table { width: 100%; border-collapse: collapse; }
th, td { border: 1px solid #ddd; padding: 6px 8px; }
th { background: #f7f7f7; text-align: left; }
.list-group-item { display: block; padding: .5rem .75rem; border: 1px solid #ddd; margin-bottom: -1px; }
.btn { display: inline-block; padding: .5rem .75rem; border: 1px solid #0d6efd; background: #0d6efd; color: white; border-radius: 4px; cursor: pointer; }
.btn:disabled { opacity: .6; cursor: not-allowed; }
.mb-4 { margin-bottom: 1rem; }
.mt-3 { margin-top: .75rem; }