:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;}
body{margin:0;background:#f6f8fa;color:#111}
.container{max-width:820px;margin:32px auto;padding:20px;background:#fff;border-radius:8px;box-shadow:0 6px 18px rgba(11,15,30,0.06)}
h1{margin:0 0 8px;font-size:20px}
.notice{background:#eef9ff;border-left:4px solid #2b9df4;padding:8px 12px;border-radius:4px;color:#024}
.controls{display:flex;gap:12px;align-items:center;margin:16px 0}
.file-label{display:inline-flex;align-items:center;padding:8px 12px;background:#f3f4f6;border:1px dashed #d0d5dd;border-radius:6px;cursor:pointer}
.file-label input{display:none}
button{padding:8px 12px;border-radius:6px;border:1px solid #d0d5dd;background:white;cursor:pointer}
button.secondary{background:#f3f4f6;color:#555}
.results{margin-top:16px}
table{width:100%;border-collapse:collapse;margin-top:8px}
th,td{padding:8px 10px;border-bottom:1px solid #eef0f2;text-align:left}
.hidden{display:none}
.explain{margin-top:18px;color:#444}

/* Landing page hero cards */
.hero-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}
.card{border:1px solid #eef0f2;border-radius:8px;padding:16px}
.card h2{margin:0 0 6px;font-size:16px}
.button{display:inline-block;padding:8px 14px;border-radius:6px;background:#2b9df4;color:#fff;text-decoration:none;font-weight:600}

/* Drag-and-drop upload zone */
.dropzone{border:2px dashed #d0d5dd;border-radius:10px;padding:20px;text-align:center;margin:16px 0;transition:border-color .15s,background .15s}
.dropzone.dragover{border-color:#2b9df4;background:#eef9ff}
.dropzone-hint{color:#888;font-size:13px;margin:8px 0 0}
.dropzone .controls{justify-content:center}

/* Stat cards */
.stat-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:12px 0 16px}
.stat-card{border:1px solid #eef0f2;border-radius:8px;padding:12px;text-align:center}
.stat-card-highlight{background:#eef9ff;border-color:#bfe4fb}
.stat-value{font-size:22px;font-weight:700}
.stat-label{font-size:12px;color:#666;margin-top:2px}

.results-actions{display:flex;gap:12px;margin-top:12px}
.restore-notice{margin-bottom:16px}

/* Loaded sources (multi-file merge) */
.file-list-section{margin:16px 0}
.file-list-section h3{margin:0 0 8px;font-size:14px;color:#444}
.file-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.file-list li{display:flex;align-items:center;justify-content:space-between;background:#f8f9fb;border:1px solid #eef0f2;border-radius:6px;padding:6px 10px;font-size:13px}
.file-list .file-name{font-weight:600}
.file-list .file-count{color:#777;margin-left:8px}
.file-list .remove-file{background:none;border:none;color:#c0392b;cursor:pointer;padding:2px 6px;font-size:12px}

@media (max-width:520px){
  .hero-cards{grid-template-columns:1fr}
  .stat-cards{grid-template-columns:1fr}
}

/* Auth form */
.auth-form{display:flex;flex-direction:column;gap:12px;max-width:340px;margin:16px 0}
.auth-form label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:#444}
.auth-form input{padding:8px 10px;border:1px solid #d0d5dd;border-radius:6px;font-size:14px}
.auth-form button{align-self:flex-start}

/* Business mode auth bar */
.auth-bar{display:flex;align-items:center;gap:12px;margin:12px 0;font-size:13px;color:#444}