:root {
  --fg: #1a1a1a;
  --muted: #666;
  --bg: #fafafa;
  --panel-bg: #fff;
  --border: #d8d8d8;
  --accent: #2a5d8f;
  --accent-fg: #fff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.45;
}

.app-header {
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  background: var(--panel-bg);
}
.app-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.app-header .app-logo {
  display: block;
  height: 2rem;
  width: auto;
  aspect-ratio: 2148 / 401;
  flex: 0 0 auto;
}
.app-header-text { display: flex; flex-direction: column; }
.app-header h1 { margin: 0; font-size: 1.4rem; }
.subtitle { margin: 0.1rem 0 0; color: var(--muted); font-size: 0.95rem; }

main {
  max-width: 1100px;
  margin: 1.5rem auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
}
.panel h2 { margin: 0 0 0.75rem; font-size: 1.05rem; }

.row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.4rem 0;
}
.spacer { flex: 1 1 auto; }
.meta { color: var(--muted); font-size: 0.85rem; }
.hint { color: var(--muted); font-size: 0.9rem; margin: 0.25rem 0 0.6rem; }

button, select, input[type="text"], textarea {
  font: inherit;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: #fff;
  color: var(--fg);
}
button { cursor: pointer; }
button:hover { background: #f0f0f0; }
button.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
button.primary:hover { background: #224d77; }

.table-wrap { overflow-x: auto; }
#data-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
  font-size: 0.92rem;
  table-layout: fixed;
}
#data-table .col-wide { width: 2.2em; }
#data-table .col-narrow { width: 1.1em; }
#data-table .col-del { width: 0.5em; padding: 0.2rem; text-align: center; }
#data-table th, #data-table td { word-break: break-word; }
#data-table th, #data-table td {
  border: 1px solid var(--border);
  padding: 0.3rem 0.5rem;
  text-align: left;
}
#data-table th { background: #f5f5f5; font-weight: 600; }
#data-table input {
  width: 100%;
  border: none;
  padding: 0.2rem;
  background: transparent;
}
#data-table input:focus { outline: 2px solid var(--accent); background: #fff; }
#data-table .del-btn {
  padding: 0 0.15rem;
  font-size: 0.9rem;
  line-height: 1;
  color: #a44;
  background: transparent;
  border: 1px solid transparent;
}
#data-table .del-btn:hover { background: #fee; border-color: #fcc; }

.paste-area { margin-top: 0.75rem; }
.paste-area summary { cursor: pointer; font-weight: 500; padding: 0.25rem 0; }
.paste-area textarea {
  width: 100%;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.85rem;
}

.preview {
  margin-top: 0.75rem;
  padding: 1rem;
  background: #ececec;
  border: 1px solid var(--border);
  border-radius: 6px;
  min-height: 4rem;
  overflow-x: auto;
}
.preview:empty::before {
  content: "Labels will appear here after you click \"Generate labels\".";
  color: var(--muted);
  font-style: italic;
}
.preview .preview-page {
  background: #fff;
  width: var(--page-width, 8.5in);
  min-height: var(--page-height, 11in);
  padding: var(--page-margin, 0.5in);
  margin: 0 auto 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  box-sizing: border-box;
  position: relative;
}
.preview .preview-page:last-child { margin-bottom: 0; }
.preview .page-number {
  position: absolute;
  top: 0.15in;
  right: 0.25in;
  font-size: 9pt;
  color: var(--muted);
}
.preview .page-grid {
  display: grid;
  grid-template-columns: repeat(var(--cols, 2), min-content);
  gap: var(--gap, 0.25in);
  justify-content: center;
}
.preview .label-host { /* labels keep their own background from template CSS */ }

.mapping-panel {
  margin-top: 0.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: #f3f7fb;
}
.mapping-panel h3 { margin: 0 0 0.25rem; font-size: 1rem; }
#mapping-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.5rem 0;
  font-size: 0.9rem;
}
#mapping-table th, #mapping-table td {
  border: 1px solid var(--border);
  padding: 0.3rem 0.5rem;
  text-align: left;
}
#mapping-table th { background: #e9eef4; font-weight: 600; }
#mapping-table td.sample { color: var(--muted); font-style: italic; }
#mapping-table select { width: 100%; }
#mapping-table select.unmapped { border-color: #c66; background: #fdecec; }

.template-carousel {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.5rem 0.25rem;
  margin-bottom: 0.5rem;
}
.tpl-card {
  flex: 0 0 auto;
  border: 2px solid var(--border);
  border-radius: 6px;
  background: #fff;
  padding: 0.5rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  width: 13rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.tpl-card:hover { border-color: #aaa; }
.tpl-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}
.tpl-card-preview {
  width: 100%;
  height: 8rem;
  background: #f5f5f5;
  border: 1px solid #ddd;
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}
.tpl-card-preview > .shadow-host {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: top left;
  display: inline-block;
}
.tpl-card-name {
  font-size: 0.8rem;
  font-weight: 500;
  text-align: center;
  line-height: 1.2;
}

.app-footer {
  text-align: center;
  padding: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
}
.app-footer p { margin: 0.2rem 0; }
.app-footer a { color: var(--accent); text-decoration: none; }
.app-footer a:hover { text-decoration: underline; }
.app-footer .made-with,
.app-footer .brought-by { display: flex; align-items: center; gap: 0.3rem; flex-wrap: wrap; justify-content: center; }
.app-footer .made-with a,
.app-footer .brought-by a { display: inline-flex; align-items: center; gap: 0.25rem; }
.app-footer .claude-logo,
.app-footer .datadao-logo { height: 1rem; width: auto; vertical-align: middle; border-radius: 2px; }