:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --border: #e2e5ec;
  --text: #1d2330;
  --muted: #6a7180;
  --primary: #2c6cff;
  --primary-hover: #1f57d8;
  --error-bg: #fff0f0;
  --error-border: #f0b4b4;
  --error-text: #8a2222;
  --ok: #1f7a3f;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

main { max-width: 880px; margin: 0 auto; padding: 24px 16px 64px; }

header h1 { margin: 0 0 4px; font-size: 1.6rem; }
header .sub { color: var(--muted); margin: 0 0 24px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}
.card h2 { margin: 0 0 12px; font-size: 1.1rem; }

.hidden { display: none !important; }

.drop {
  border: 2px dashed #c4cad6;
  border-radius: 10px;
  padding: 28px;
  text-align: center;
  background: #fafbfd;
  transition: background .15s, border-color .15s;
}
.drop.over { border-color: var(--primary); background: #eef3ff; }
.drop p { margin: 4px 0; }
.drop .hint { color: var(--muted); font-size: 0.9rem; }

.info {
  background: #f1f6ff;
  border: 1px solid #c8d8f7;
  padding: 10px 12px;
  border-radius: 8px;
  margin-top: 12px;
  font-size: 0.95rem;
}

button, .button {
  font: inherit;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
  display: inline-block;
}
button:hover, .button:hover { background: #f3f5fa; }
button.primary, .button.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
button.primary:hover, .button.primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}
button:disabled { opacity: .5; cursor: not-allowed; }

.actions-row { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; }

#actions .action-item {
  display: block;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 8px;
  cursor: pointer;
  background: #fff;
}
#actions .action-item:hover { background: #fafbfd; }
#actions .action-item.selected { border-color: var(--primary); background: #eef3ff; }
#actions .action-item .title { font-weight: 600; }
#actions .action-item .desc { color: var(--muted); font-size: 0.9rem; margin-top: 4px; }
#actions .action-item .badge {
  display: inline-block;
  background: #e8f5ec;
  color: var(--ok);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
}

#mapping .field { margin-bottom: 10px; }
#mapping label { display: block; font-size: 0.9rem; color: var(--muted); margin-bottom: 4px; }
#mapping select {
  width: 100%;
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font: inherit;
}
#mapping select.missing { border-color: #d88; background: #fff5f5; }

.error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
  padding: 10px 12px;
  border-radius: 8px;
  margin-top: 16px;
}

.spinner {
  position: fixed; top: 16px; right: 16px;
  background: #fff; border: 1px solid var(--border);
  padding: 10px 16px; border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,.06);
}

#report ul { padding-left: 18px; margin: 0; }
#report li { margin-bottom: 4px; }
#report .op-name { font-weight: 600; }
#report .op-skip { color: var(--muted); }

footer { text-align: center; color: var(--muted); padding: 20px 0; }