:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1c1f24;
  --muted: #667085;
  --border: #e3e6eb;
  --accent: #2f5bea;
  --accent-text: #ffffff;
  --soft: #eef2fd;
  --danger: #c4320a;
  --code-bg: #f2f4f7;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --panel: #1a1d23;
    --text: #e6e8ec;
    --muted: #98a2b3;
    --border: #2c313a;
    --accent: #6d8dff;
    --accent-text: #0b0d12;
    --soft: #222a40;
    --danger: #ff8a65;
    --code-bg: #23272f;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "PingFang TC", "Noto Sans TC", "Segoe UI", sans-serif;
}
.top {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 16px 12px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
}
h1 { margin: 0; font-size: 22px; }
h2 { margin: 0; font-size: 17px; }
.sub { margin: 4px 0 0; color: var(--muted); }

.grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 8px 16px 40px;
  display: grid;
  grid-template-columns: minmax(300px, 400px) 1fr;
  gap: 16px;
  align-items: start;
}
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } }

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  min-width: 0;
}

.drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 28px 12px;
  border: 2px dashed var(--border);
  border-radius: 10px;
  cursor: pointer;
  text-align: center;
  transition: border-color .15s, background .15s;
}
.drop span { color: var(--muted); font-size: 13px; }
.drop.over, .drop:hover { border-color: var(--accent); background: var(--soft); }

.file-info {
  margin-top: 12px;
  padding: 10px 12px;
  background: var(--soft);
  border-radius: 8px;
  font-size: 13px;
  overflow-wrap: anywhere;
}
.file-info .err { color: var(--danger); margin-top: 4px; }
.file-info .warn { color: var(--muted); margin-top: 4px; }
.sec.empty pre { color: var(--danger); }

.preview { margin-top: 12px; font-size: 13px; }
.preview summary { cursor: pointer; color: var(--muted); }
#sections { max-height: 320px; overflow: auto; margin-top: 8px; border: 1px solid var(--border); border-radius: 8px; }
.sec { padding: 8px 10px; border-bottom: 1px solid var(--border); }
.sec:last-child { border-bottom: 0; }
.sec b { display: block; font-size: 12px; color: var(--muted); }
.sec pre { margin: 2px 0 0; white-space: pre-wrap; font: inherit; }

.field { display: block; margin-top: 14px; border: 0; padding: 0; min-width: 0; }
.field > legend { width: 100%; }
.field > span, .field > legend { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; padding: 0; }
.field.inline { flex: 1; margin-top: 0; }
textarea, input[type=text], input[type=password], select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
}
textarea { resize: vertical; }
.check { display: flex; gap: 6px; align-items: center; font-size: 14px; margin-top: 4px; cursor: pointer; }
.check input { margin: 0; accent-color: var(--accent); }

.row { display: flex; gap: 10px; margin-top: 14px; }
.row.end { justify-content: flex-end; }

button {
  font: inherit;
  border-radius: 8px;
  padding: 9px 16px;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
}
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); flex: 1; font-weight: 600; }
button.small { padding: 5px 10px; font-size: 13px; }
button:disabled { opacity: .5; cursor: not-allowed; }

.result-panel { min-height: 60vh; }
.result-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.actions { display: flex; gap: 6px; }
.status { font-size: 13px; color: var(--muted); margin: 6px 0 10px; min-height: 1.2em; white-space: pre-line; overflow-wrap: anywhere; }
.status.err { color: var(--danger); }


.output {
  display: block;
  min-height: calc(60vh - 60px);
  font: 14px/1.6 ui-monospace, SFMono-Regular, Menlo, "PingFang TC", monospace;
  background: var(--code-bg);
  white-space: pre-wrap;
}