:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --border: #dde3e8;
  --text: #1c2530;
  --muted: #6b7680;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --danger: #d64545;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

button {
  font-family: inherit;
  cursor: pointer;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 10px 16px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand {
  font-weight: 700;
  font-size: 16px;
  white-space: nowrap;
}

.template-switch {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tpl-btn {
  border: 1px solid var(--border);
  background: #f7f9fb;
  color: var(--text);
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 13px;
}

.tpl-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.toolbar {
  display: flex;
  gap: 8px;
  margin-left: auto;
  flex-wrap: wrap;
}

.toolbar button {
  border: 1px solid var(--border);
  background: #fff;
  padding: 7px 12px;
  border-radius: 6px;
  font-size: 13px;
}

.toolbar button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
}

.toolbar button.primary:hover { background: var(--accent-dark); }
.toolbar button:hover { background: #eef1f4; }
.toolbar button.primary:hover { background: var(--accent-dark); }

.status {
  min-height: 22px;
  padding: 0 16px;
  font-size: 12.5px;
  color: var(--accent-dark);
}

.layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 16px;
  padding: 16px;
  height: calc(100vh - 64px);
}

.form-pane {
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
}

.group {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 10px;
  padding: 8px 10px;
  background: #fbfcfd;
}

.group summary {
  font-weight: 600;
  cursor: pointer;
  padding: 4px 0;
}

.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 8px;
}

label.field {
  display: flex;
  flex-direction: column;
  font-size: 12px;
  color: var(--muted);
  gap: 3px;
}

input[type="text"], input[type="url"], input[type="email"], textarea {
  font-family: inherit;
  font-size: 13px;
  padding: 6px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 100%;
  color: var(--text);
  background: #fff;
}

textarea { resize: vertical; }

#summaryField { margin-top: 8px; }

.repeat-list { margin-top: 8px; display: flex; flex-direction: column; gap: 10px; }

.card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  background: #fff;
  position: relative;
}

.card-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 6px;
}

.card-row.single { grid-template-columns: 1fr; }

.card-actions {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 6px;
}

.icon-btn {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  padding: 3px 8px;
  font-size: 12px;
  color: var(--muted);
}

.icon-btn:hover { background: #f1f3f5; }
.icon-btn.remove { color: var(--danger); border-color: #f0c9c9; }
.icon-btn.remove:hover { background: #fdecec; }
.icon-btn.move:hover { background: #eef1f4; }

.bullets-hint {
  font-size: 11px;
  color: var(--muted);
  margin: 2px 0 4px;
}

.add-btn {
  margin-top: 8px;
  border: 1px dashed var(--accent);
  background: #eef4ff;
  color: var(--accent-dark);
  border-radius: 6px;
  padding: 7px 10px;
  font-size: 13px;
  width: 100%;
}

.add-btn:hover { background: #e2ecff; }

.preview-pane {
  display: flex;
  flex-direction: column;
  background: #e9edf1;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}

.zoom-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}

.preview-frame-wrap {
  flex: 1;
  overflow: auto;
  display: flex;
  justify-content: center;
  padding: 24px;
}

#previewFrame {
  width: 8.5in;
  height: 11in;
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: 0 4px 18px rgba(0,0,0,0.12);
  transform-origin: top center;
  flex-shrink: 0;
}

@media (max-width: 980px) {
  .layout { grid-template-columns: 1fr; height: auto; }
  .form-pane { max-height: 60vh; }
}