:root{--bg:#0f172a;--card:#1e293b;--text:#f8fafc;--muted:#94a3b8;--primary:#2563eb;--primary-hover:#1d4ed8;--given:#10b981;--received:#f59e0b;--border:#334155}*{box-sizing:border-box;margin:0;padding:0}body{background:var(--bg);color:var(--text);padding:1rem;font-family:system-ui,-apple-system,sans-serif}#app{max-width:900px;margin:0 auto}.app-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;margin-bottom:1.5rem;padding-bottom:1.5rem;display:flex}.card{background:var(--card);border:1px solid var(--border);border-radius:8px;margin-bottom:1.5rem;padding:1.5rem}.tabs{gap:.5rem;margin-bottom:1rem;display:flex}.tab{color:var(--muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;padding:.5rem 1rem;font-weight:600}.tab.active{color:var(--text);border-bottom-color:var(--primary)}form{flex-direction:column;gap:1rem;display:flex}.grid-2{grid-template-columns:1fr 1fr;gap:1rem;display:grid}label{color:var(--muted);flex-direction:column;gap:.4rem;font-size:.875rem;display:flex}input,select,textarea{border:1px solid var(--border);color:var(--text);background:#0b1120;border-radius:6px;padding:.6rem;font-size:1rem}.btn-primary{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:.75rem;font-weight:600}.btn-primary:hover{background:var(--primary-hover)}.btn-sm{border:1px solid var(--border);color:var(--muted);cursor:pointer;background:0 0;border-radius:4px;padding:.3rem .6rem}.table-wrap{margin-top:1rem;overflow-x:auto}table{border-collapse:collapse;text-align:left;width:100%;font-size:.9rem}th,td{border-bottom:1px solid var(--border);padding:.75rem}th{color:var(--muted)}.tag-given{color:var(--given);font-weight:600}.tag-received{color:var(--received);font-weight:600}.msg-box{min-height:1.2rem;margin-top:.5rem;font-size:.875rem}.msg-box.err{color:#ef4444}.msg-box.ok{color:#10b981}.hidden{display:none!important}@media (width<=600px){.grid-2{grid-template-columns:1fr}}