* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: "Segoe UI", system-ui, sans-serif;
  color: #1c2330; background: #eef3f8; height: 100%; }

.topbar {
  display: flex; align-items: center; gap: 16px;
  background: linear-gradient(180deg,#fff,#e7eef7);
  padding: 8px 16px; border-bottom: 1px solid #ccd6e3;
  box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}
.brand { font-weight: 700; font-size: 18px; color: #1953a8; }
.brand .ver { color: #888; font-weight: 400; font-size: 12px; margin-left: 4px; }
.tabs { display: flex; gap: 4px; flex: 1; justify-content: center; }
.tab {
  background: transparent; border: 1px solid transparent;
  border-radius: 6px 6px 0 0; padding: 8px 18px; cursor: pointer;
  font-size: 14px; color: #44546b;
}
.tab:hover { background: #d8e3f1; }
.tab.active { background: #1976d2; color: #fff; border-color: #1976d2; }
.machine { display: flex; gap: 8px; font-size: 12px; }
.machine span {
  background: #e1ecf7; border: 1px solid #b8cce5; color: #1953a8;
  padding: 2px 8px; border-radius: 4px;
}

main { padding: 12px 16px; }
.panel { display: none; }
.panel.active { display: block; }

.bar { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.bar label { display: inline-flex; align-items: center; gap: 4px; font-size: 13px; color: #44546b; }
.bar input[type="number"], .bar input[type="text"] {
  width: 80px; padding: 4px 6px; border: 1px solid #c2cdde; border-radius: 4px;
  font-size: 13px;
}
.grow { flex: 1; }
.muted { color: #7a869a; font-size: 12px; }
.warn { color: #c0392b; }

.btn {
  background: #fff; border: 1px solid #c2cdde; padding: 6px 12px;
  border-radius: 4px; cursor: pointer; font-size: 13px;
  color: #1c2330;
}
.btn:hover { background: #f0f5fb; }
.btn.primary { background: #1976d2; color: #fff; border-color: #1976d2; }
.btn.primary:hover { background: #1561b3; }
.btn.ok { background: #2e8b57; color: #fff; border-color: #2e8b57; }
.btn.ok:hover { background: #266f47; }
.btn.danger { background: #fff; color: #c0392b; border-color: #e0b4b0; }
.btn.danger:hover { background: #fdecea; }

.grid {
  background: #fff; border: 1px solid #c2cdde; border-radius: 6px;
  overflow: auto; max-height: 75vh;
}
.grid.wide { flex: 1; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  background: #f4f7fb; color: #44546b; text-align: left;
  padding: 8px 10px; border-bottom: 1px solid #d8e0eb; font-weight: 600;
  position: sticky; top: 0;
}
tbody td { padding: 4px 6px; border-bottom: 1px solid #eef2f8; }
tbody tr { cursor: default; }
tbody tr.selected { background: #d8f1d8; }
tbody tr:hover { background: #f4f7fb; }
tbody tr.selected:hover { background: #c8e8c8; }

td input, td select {
  width: 100%; border: 1px solid transparent; background: transparent;
  padding: 3px 4px; font-size: 13px; border-radius: 3px;
}
td input:focus, td select:focus {
  border-color: #1976d2; outline: none; background: #fff;
}
td.cb { text-align: center; }

.split { display: flex; gap: 12px; }
.codepanel {
  flex: 0 0 320px; background: #fff; border: 1px solid #c2cdde;
  border-radius: 6px; padding: 12px;
}
.codepanel h3 { margin: 8px 0 4px; font-size: 13px; color: #44546b; }
.codepanel textarea {
  width: 100%; font-family: "Consolas", monospace; font-size: 12px;
  border: 1px solid #c2cdde; border-radius: 4px; padding: 6px;
}

.nest-body { display: flex; gap: 12px; }
.sheet-list {
  flex: 0 0 220px; background: #fff; border: 1px solid #c2cdde;
  border-radius: 6px; padding: 10px;
}
.sheet-list h4 { margin: 0 0 6px; font-size: 13px; color: #44546b; }
.sheet-list ul { list-style: none; padding: 0; margin: 0 0 12px; }
.sheet-list li {
  padding: 4px 6px; border-radius: 4px; cursor: pointer; font-size: 13px;
}
.sheet-list li:hover { background: #f0f5fb; }
.sheet-list li.active { background: #1976d2; color: #fff; }

.canvas-wrap {
  flex: 1; background: #fff; border: 1px solid #c2cdde; border-radius: 6px;
  padding: 8px; min-height: 660px;
}
canvas { display: block; background: #fafbfd; border-radius: 4px; }

.gc-body { display: flex; gap: 12px; }
.gc-form {
  flex: 0 0 420px; background: #fff; border: 1px solid #c2cdde;
  border-radius: 6px; padding: 12px; max-height: 75vh; overflow-y: auto;
}
.gc-form h3 { margin: 12px 0 4px; font-size: 13px; color: #44546b;
  border-bottom: 1px solid #eef2f8; padding-bottom: 2px; }
.gc-form label { display: flex; flex-direction: column; gap: 2px;
  font-size: 12px; color: #44546b; margin-bottom: 6px; }
.gc-form label.row { flex-direction: row; align-items: center; gap: 6px; }
.gc-form input[type="text"], .gc-form input[type="number"],
.gc-form input:not([type]), .gc-form select, .gc-form textarea {
  border: 1px solid #c2cdde; border-radius: 4px; padding: 4px 6px;
  font-size: 13px; font-family: inherit;
}
.gc-form textarea { font-family: "Consolas", monospace; font-size: 12px; }
.gc-preview {
  flex: 1; background: #fff; border: 1px solid #c2cdde;
  border-radius: 6px; padding: 12px;
}
.gc-preview h3 { margin: 0 0 8px; font-size: 13px; color: #44546b; }
.gc-preview select { margin-bottom: 8px; padding: 4px; border: 1px solid #c2cdde;
  border-radius: 4px; width: 100%; }
.gc-preview pre {
  background: #fafbfd; border: 1px solid #eef2f8; border-radius: 4px;
  padding: 12px; font-family: "Consolas", monospace; font-size: 12px;
  max-height: 70vh; overflow: auto; margin: 0;
  white-space: pre-wrap; word-break: break-all;
}

#toast {
  position: fixed; right: 16px; bottom: 16px;
  background: #1c2330; color: #fff; padding: 10px 16px;
  border-radius: 6px; font-size: 13px;
  opacity: 0; transform: translateY(8px); pointer-events: none;
  transition: opacity 0.18s, transform 0.18s;
  max-width: 360px;
}
#toast.show { opacity: 1; transform: translateY(0); }
#toast.err { background: #c0392b; }
#toast.ok { background: #2e8b57; }