:root {
  --bg: #f5f5f7;
  --panel: #ffffff;
  --border: #d8d8de;
  --text: #1c1c1f;
  --muted: #6b6b74;
  --accent: #2f6fed;
  --accent-hover: #2559c7;
  --danger: #c0392b;
  --danger-bg: #fde8e6;
  --warn: #8a6d00;
  --warn-bg: #fff6db;
  --ok-bg: #eaf6ec;
  --radius: 6px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.4;
}

header {
  padding: 14px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header h1 {
  font-size: 16px;
  margin: 0;
}

header .sub {
  color: var(--muted);
  font-size: 12px;
}

main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 16px 20px 60px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

section > h2 {
  font-size: 13px;
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

button {
  font: inherit;
  padding: 6px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
}

button:hover { background: #f0f0f3; }

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

button.primary:hover { background: var(--accent-hover); }

button.small { padding: 3px 8px; font-size: 12px; }

button:disabled { opacity: 0.5; cursor: not-allowed; }

input[type="text"], input[type="number"], select, textarea {
  font: inherit;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
}

#dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 30px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}

#dropzone.drag {
  border-color: var(--accent);
  background: #eef3fe;
}

#dropzone strong { color: var(--text); }

table {
  border-collapse: collapse;
  width: 100%;
  font-size: 12.5px;
}

th, td {
  border: 1px solid var(--border);
  padding: 4px 6px;
  text-align: left;
  vertical-align: middle;
}

th {
  background: #fafafb;
  position: sticky;
  top: 0;
  font-weight: 600;
  white-space: nowrap;
}

tbody tr:hover { background: #fafafd; }

.table-wrap {
  max-height: 480px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

tr.row-missing { background: var(--warn-bg); }

td.thumb-cell img {
  width: 40px;
  height: 40px;
  object-fit: cover;
  border-radius: 3px;
  display: block;
  border: 1px solid var(--border);
}

.file-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: #f0f2f6;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
}

.new-name { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

tr.collision .new-name, tr.unmapped .new-name {
  color: var(--danger);
  font-weight: 600;
}

tr.collision, tr.unmapped { background: var(--danger-bg); }

.badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
}

.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.danger { background: var(--danger-bg); color: var(--danger); }
.badge.ok { background: var(--ok-bg); color: #2f7a3d; }

.token-builder {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  margin-bottom: 8px;
}

.token-chip {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #eef1f6;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 2px 4px 2px 10px;
  font-size: 12px;
}

.token-chip.literal { background: #f6f0ee; }

.token-chip select {
  font-size: 11px;
  padding: 1px 2px;
  border-radius: 8px;
}

.token-chip button {
  border: none;
  background: transparent;
  padding: 0 6px;
  font-size: 13px;
  line-height: 1;
  cursor: pointer;
}

.token-chip button:hover { color: var(--danger); }

.template-input-wrap {
  position: relative;
  margin-bottom: 10px;
}

#templateRaw {
  width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 15px;
  padding: 12px 130px 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
}

#templateRaw:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.12);
}

.insert-var-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
}

.insert-var-btn:hover { background: var(--accent-hover); }

.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 20, 25, 0.45);
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-backdrop.open { display: flex; }

.modal-panel {
  background: var(--panel);
  border-radius: 10px;
  padding: 16px;
  width: 380px;
  max-height: 80vh;
  overflow: auto;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.modal-header h3 { margin: 0; font-size: 14px; }

.modal-header button {
  border: none;
  background: transparent;
  font-size: 18px;
  line-height: 1;
  padding: 0 4px;
  cursor: pointer;
}

.var-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 9px 10px;
  border-radius: 6px;
  margin-bottom: 3px;
  border: 1px solid transparent;
}

.var-option:hover {
  background: #eef3fe;
  border-color: var(--accent);
}

.var-option .key {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 700;
  font-size: 13px;
}

.var-option .desc {
  display: block;
  color: var(--muted);
  font-size: 11.5px;
  margin-top: 2px;
}

.var-group-label {
  margin: 10px 0 4px;
  padding-top: 8px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

#templatePreview {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: #f0f2f6;
  padding: 6px 10px;
  border-radius: var(--radius);
  word-break: break-all;
}

.hint { color: var(--muted); font-size: 11.5px; }

.stat-strip {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--muted);
}

.stat-strip strong { color: var(--text); }

label.inline {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}

.spacer { flex: 1; }

#fileInput, #configJsonInput { display: none; }

.footer-note {
  color: var(--muted);
  font-size: 11.5px;
  text-align: center;
  padding: 10px 0;
}