body { font-family: 'Inter', Arial, sans-serif; margin: 26px; background:#f7f7fb; color:#222; }
h2 { margin-bottom: 12px; font-size: 28px; }
a { color:#2563eb; text-decoration:none; }
a:hover { text-decoration:underline; }

.top-links {
  margin-bottom: 18px;
  display:flex;
  gap:18px;
  font-size:15px;
}

.card {
  background:white;
  border-radius:12px;
  padding:20px;
  box-shadow:0 2px 6px rgba(0,0,0,0.08);
  margin-bottom:20px;
}

.notice {
  background:#fffce7;
  border:1px solid #e5df9a;
  padding:14px;
  border-radius:10px;
  margin-bottom:20px;
  line-height:1.5;
}

#dropZone {
  border:2px dashed #888; padding:26px; text-align:center; border-radius:10px; cursor:pointer;
  background:#fafafa;
  transition:0.2s;
}
#dropZone.dragover {
  border-color:#2563eb; background:#eef3ff; color:#2563eb;
}

input[type=file]{ display:none; }

#controls {
  margin-top:10px;
  display:flex;
  gap:12px;
  align-items:center;
  flex-wrap:wrap;
}

#status { margin-top:6px; font-size:14px; color:#444; }

button {
  background:#2563eb;
  color:white;
  padding:10px 16px;
  border:none;
  border-radius:8px;
  cursor:pointer;
  font-size:14px;
  transition:0.15s;
}
button:disabled {
  background:#9bb5ee;
  cursor:not-allowed;
}
button:hover:not(:disabled) {
  background:#1d4ed8;
}

table { width:100%; border-collapse:collapse; margin-top:16px; background:white; border-radius:8px; overflow:hidden; box-shadow:0 1px 3px rgba(0,0,0,0.06); }
th, td { padding:10px; border-bottom:1px solid #e5e7eb; font-size:14px; }
th {
  background:#f3f4f6;
  -webkit-user-select:none;
  cursor:pointer; user-select:none;
  font-weight:600;
}
th:hover { background:#e8ebf4; }

a.cardlink { color:#2563eb; }
a.cardlink:hover { text-decoration:underline; }

#output:empty {
    display: none;
}

/* Mobile enhancements */
@media (max-width: 600px) {
  body { margin: 16px; }
  .card { padding: 14px; }
  button { width: 100%; }
  #controls { flex-direction: column; align-items: stretch; }
  #dropZone { padding: 18px; font-size: 14px; }
  table { font-size: 13px; }
  th, td { padding: 8px; }
  #output { overflow-x: auto; }
}