:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:#1f2933;background:#f5f7fa}*{box-sizing:border-box}body{margin:0}a{color:#2563eb}.app{display:flex;min-height:100vh}.sidebar{width:200px;background:#1f2933;color:#e4e7eb;padding:16px;flex-shrink:0}.sidebar h1{font-size:16px;margin:0 0 16px}.sidebar button{display:block;width:100%;text-align:left;background:none;border:none;color:#cbd2d9;padding:8px;border-radius:6px;cursor:pointer;font-size:14px}.sidebar button.active,.sidebar button:hover{background:#323f4b;color:#fff}.sidebar .spacer{flex:1}.main{flex:1;padding:24px;overflow:auto}.card{background:#fff;border:1px solid #e4e7eb;border-radius:8px;padding:16px;margin-bottom:16px}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:6px 8px;border-bottom:1px solid #eef1f4}th{color:#616e7c;font-weight:600}input,textarea,select{padding:8px;border:1px solid #cbd2d9;border-radius:6px;font:inherit;width:100%}label{display:block;font-size:12px;color:#616e7c;margin:8px 0 4px}button.primary{background:#2563eb;color:#fff;border:none;padding:8px 14px;border-radius:6px;cursor:pointer}button.primary:disabled{opacity:.5;cursor:default}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;font-weight:600}.badge.sim{background:#fef3c7;color:#92400e}.badge.delivered{background:#d1fae5;color:#065f46}.badge.submitted{background:#e0e7ff;color:#3730a3}.badge.failed{background:#fee2e2;color:#991b1b}.badge.received{background:#dbeafe;color:#1e40af}.login{max-width:360px;margin:12vh auto}.error{color:#b91c1c;font-size:13px}.muted{color:#9aa5b1;font-size:12px}