:root { --ink:#111827; --muted:#6b7280; --brand:#111827; }
*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,Segoe UI,Roboto,Arial;background:#f8fafc;color:var(--ink)}
.container{max-width:1000px;margin:0 auto;padding:16px}
.topbar{position:sticky;top:0;background:#fff;border-bottom:1px solid #e5e7eb;z-index:10}
.topbar .container{display:flex;align-items:center;gap:12px}
.topbar h1{font-size:18px;margin:0}
nav{margin-left:auto;display:flex;gap:8px}
.btn,.btn-link{padding:8px 12px;border-radius:10px;border:1px solid #e5e7eb;background:#fff;cursor:pointer}
.btn:hover,.btn-link:hover{background:#f3f4f6}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:16px;margin-top:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:12px 0}
label{font-size:14px;display:flex;flex-direction:column;gap:6px}
input,select,textarea{padding:10px 12px;border:1px solid #e5e7eb;border-radius:10px}
.tabs{display:flex;gap:8px;margin-bottom:12px}
.tabs button{padding:8px 12px;border:1px solid #e5e7eb;border-radius:10px;background:#f9fafb;cursor:pointer}
.tabs button.active{background:#111827;color:#fff;border-color:#111827}
.table{width:100%;border-collapse:collapse}.table th,.table td{padding:10px;border-bottom:1px solid #f1f5f9;text-align:left}
.result-card{border:1px solid #e5e7eb;border-radius:12px;padding:12px;margin-top:8px;background:#fff}
.badge{display:inline-block;padding:4px 8px;border-radius:999px;font-size:12px;background:#eef2ff}
.muted{color:var(--muted)}.small{font-size:12px}.note{padding:8px}
/* Add to assets/styles.css if not present */
.flash{margin-top:16px;padding:10px 12px;border-radius:10px;border:1px solid #e5e7eb;background:#f9fafb}
.flash.success{border-color:#10b981;background:#ecfdf5}
.flash.error{border-color:#ef4444;background:#fef2f2}
.flash .small{display:block;color:#6b7280;font-size:12px;margin-top:4px}
.btn[disabled]{opacity:.6;cursor:not-allowed}