:root {
  color-scheme: light;
  --bg: #F1F2F5;
  --sidebar-bg: #FFFFFF;
  --border: #E3E5EA;
  --border-soft: #ECEDF1;
  --text: #14151A;
  --text-muted: #6B7280;
  --text-faint: #9AA0AC;
  --accent: #2563EB;
  --accent-soft: #EEF2FF;
  --danger: #DC2626;
  --radius: 10px;
  --sidebar-w: 340px;

  /* Litepicker theme overrides — match the app's accent blue */
  --litepicker-is-start-color-bg: #2563EB;
  --litepicker-is-end-color-bg: #2563EB;
  --litepicker-is-in-range-color: #EEF2FF;
  --litepicker-button-apply-color-bg: #2563EB;
  --litepicker-is-today-color: #2563EB;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 'Inter', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.app {
  display: flex;
  align-items: flex-start;
  min-height: 100vh;
}

/* ---------- Sidebar ---------- */

.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 var(--sidebar-w);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 18px 16px 40px;
  scrollbar-width: thin;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 4px 16px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 14px;
}

.sidebar-brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: linear-gradient(135deg, #4C8DF6, #2563EB);
  color: #fff;
  font-weight: 700;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-brand-title { font-weight: 700; font-size: 14px; }
.sidebar-brand-sub { font-size: 11px; color: var(--text-muted); }

.panel {
  padding: 14px 4px;
  border-bottom: 1px solid var(--border-soft);
}
.panel:last-child { border-bottom: none; }

.panel h2 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  margin: 0 0 12px;
  font-weight: 700;
}

.panel h3 {
  font-size: 11px;
  color: var(--text-muted);
  margin: 12px 0 8px;
  font-weight: 700;
}

.field { display: block; margin-bottom: 10px; }
.field > span {
  display: block;
  font-size: 11.5px;
  color: var(--text-muted);
  margin-bottom: 5px;
}
.field-row { display: flex; gap: 10px; }
.field-row .field { flex: 1; }
.field-inline { margin-top: -4px; margin-bottom: 10px; width: 100%; }

input[type=text], input[type=number], input[type=datetime-local], select, textarea {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #fff;
  color: var(--text);
  font: inherit;
  font-size: 13px;
}
input:focus, select:focus, textarea:focus, button:focus-visible {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.checkbox-field { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--text-muted); }
.checkbox-field input { width: auto; }

.markdown-input {
  height: 260px;
  resize: vertical;
  font: 12.5px/1.5 'SFMono-Regular', Consolas, 'Courier New', monospace;
}

.hint { font-size: 11px; color: var(--text-faint); margin: 6px 0 0; }
.hint code { background: var(--border-soft); padding: 1px 4px; border-radius: 4px; }

/* Segmented control (orientation) */
.seg { display: flex; border: 1px solid var(--border); border-radius: 7px; overflow: hidden; }
.seg-btn {
  flex: 1;
  padding: 7px 0;
  border: none;
  background: #fff;
  color: var(--text-muted);
  font: inherit;
  font-size: 12.5px;
  cursor: pointer;
  border-right: 1px solid var(--border);
}
.seg-btn:last-child { border-right: none; }
.seg-btn.active { background: var(--accent); color: #fff; font-weight: 600; }

/* Model picker */
.model-picker-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 9px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: #fff;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  text-align: left;
}
.mp-icon img, .model-row-icon img { width: 20px; height: 20px; display: block; border-radius: 5px; }
#model-picker-label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mp-chevron { color: var(--text-faint); font-size: 10px; }

.model-picker-panel {
  margin-top: 6px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(20,21,26,.08);
  padding: 8px;
}
.model-picker-panel input[type=text] { margin-bottom: 6px; }
.model-list { max-height: 220px; overflow-y: auto; }
.model-group-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-faint);
  padding: 6px 6px 2px;
}
.model-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 6px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
}
.model-row:hover { background: var(--accent-soft); }
.model-row.selected { background: var(--accent-soft); font-weight: 600; }
.model-status { font-size: 11px; color: var(--text-faint); padding: 4px 6px 0; }

/* Date range picker */
.date-range-presets { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 6px; }
.preset-btn {
  font-size: 10.5px;
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--text-muted);
  cursor: pointer;
}
.preset-btn:hover { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.preset-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }
#f-date-range { cursor: pointer; background: #fff; }

/* Per-page override rows */
.per-page-overrides { margin-top: 14px; }
.per-page-overrides .hint-inline { font-weight: 400; text-transform: none; letter-spacing: 0; color: var(--text-faint); }
.page-override-row {
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 8px;
}
.page-override-row .field-row { margin-top: 8px; }
.page-override-row-title { font-size: 12px; font-weight: 600; }
.page-override-row .checkbox-field { margin: 8px 0 0; }

/* Actions */
.actions { display: flex; flex-direction: column; gap: 8px; }
.btn {
  width: 100%;
  padding: 10px 0;
  border-radius: 8px;
  border: 1px solid var(--border);
  font: inherit;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
}
.btn-secondary { background: #fff; color: var(--text); }
.btn-secondary:hover { background: var(--border-soft); }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: #1D4ED8; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.export-status { font-size: 11.5px; color: var(--text-muted); min-height: 14px; text-align: center; }
.export-status.error { color: var(--danger); }

/* ---------- Preview area ---------- */

.preview-area {
  flex: 1;
  min-width: 0;
  padding: 40px 32px 80px;
  display: flex;
  justify-content: center;
}

#pages {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.page-sheet {
  background: #fff;
  box-shadow: 0 2px 16px rgba(20,21,26,.10);
  position: relative;
  flex-shrink: 0;
}

/* Document template — mirrors the reference PDF exactly */

.doc-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 14px;
  border-bottom: 1px solid #D8DAE0;
  margin-bottom: 16px;
}
.doc-logo { display: flex; align-items: center; }
.doc-logo img { display: block; width: 88px; height: 36px; }
.doc-title-block { text-align: right; }
.doc-title { font-size: 15px; font-weight: 700; margin: 0; }
.doc-generated { font-size: 10.5px; color: var(--text-muted); margin-top: 3px; }

.doc-infobar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: #F7F8FA;
  border: 1px solid #E9EAEE;
  border-radius: 10px;
  margin-bottom: 20px;
  overflow: hidden;
}
.doc-infobar > div {
  padding: 10px 16px;
  border-right: 1px solid #E9EAEE;
}
.doc-infobar > div:last-child { border-right: none; }
.doc-info-label {
  font-size: 9.5px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  margin-bottom: 5px;
}
.doc-info-value {
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}
.doc-info-value img { width: 16px; height: 16px; border-radius: 4px; flex-shrink: 0; display: block; }
.doc-info-value.tokens { color: #2563EB; }

.doc-body h1 { font-size: 1.35em; margin: .2em 0 .5em; }
.doc-body h2 { font-size: 1.15em; margin: 1em 0 .4em; }
.doc-body h3 { font-size: 1.02em; margin: .9em 0 .3em; }
.doc-body p { margin: 0 0 .8em; }
.doc-body em { color: var(--text-muted); }
.doc-body hr { border: none; border-top: 1px solid #D8DAE0; margin: 1.2em 0; }
.doc-body ul, .doc-body ol { margin: 0 0 .8em; padding-left: 1.4em; }
.doc-body li { margin-bottom: .3em; }
.doc-body blockquote { margin: 0 0 .8em; padding-left: .9em; border-left: 3px solid #D8DAE0; color: var(--text-muted); }
.doc-body code { background: #F1F2F5; padding: .1em .35em; border-radius: 4px; font-size: .92em; }
.doc-body svg, .doc-body img { max-width: 100%; height: auto; display: block; margin: 0 0 .8em; }
.doc-body table { max-width: 100%; }

.md-table { width: 100%; border-collapse: collapse; margin: .3em 0 1em; font-size: .94em; }
.md-table th, .md-table td { border: 1px solid #E1E3E8; padding: 6px 9px; text-align: left; vertical-align: top; }
.md-table th { background: #F3F4F6; font-weight: 700; }

.doc-footer {
  border-top: 1px solid #D8DAE0;
  margin-top: 24px;
  padding-top: 10px;
  font-size: 10.5px;
  color: var(--text-muted);
  font-style: italic;
}

@media (max-width: 900px) {
  .app { flex-direction: column; }
  .sidebar { position: relative; width: 100%; flex: none; height: auto; }
}

/* Use identical flow boundaries for measurement and preview. */
.doc-body, .page-content { display: flow-root; }
.doc-body table th, .doc-body table td {
  position: relative;
  overflow-wrap: anywhere;
  min-width: 0;
}
.column-resizer {
  position: absolute;
  top: 0;
  right: -4px;
  bottom: 0;
  width: 8px;
  cursor: col-resize;
  touch-action: none;
  z-index: 2;
}
.column-resizer:hover, .column-resizer:focus { background: #2563eb80; outline: none; }
.resizing-columns, .resizing-columns * { cursor: col-resize !important; user-select: none !important; }
@media print { .column-resizer { display: none; } }
.token-controls { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: -4px 0 16px; }
.token-controls small { color: var(--text-muted); }
.token-controls button { border: 1px solid var(--border); border-radius: 5px; padding: 5px 8px; background: white; cursor: pointer; }
.token-controls button:disabled { opacity: .45; cursor: default; }
.table-edit-hint { color: #526078; font-size: 12px; text-align: center; }
.column-resizer { right: -5px; width: 10px; }
.column-resizer-header::after { content: ''; position: absolute; top: 4px; bottom: 4px; left: 4px; width: 2px; background: #3b82f6; border-radius: 2px; }
.column-resizer:hover::after, .column-resizer:focus::after { width: 3px; background: #1d4ed8; }
@media print { .table-edit-hint { display: none; } }

/* A fixed logo box stabilizes pagination; contain preserves square/wide ratios. */
.doc-body .doc-logo img { width: 88px; height: 52px; object-fit: contain; object-position: left center; margin: 0; max-width: 100%; }
.doc-logo { flex: 0 0 88px; min-height: 52px; margin-right: 16px; }

/* Pasted documents flow inside each sheet, isolated from the editor chrome. */
.doc-body .report-import { display: flow-root; width: 100% !important; max-width: 100% !important; margin: 0 !important; padding: 0 !important; }
.doc-body .report-import > .page { width: 100% !important; max-width: 100% !important; margin: 0 !important; box-shadow: none !important; }
[data-flow-container] { display: flow-root; }
.overflow-slice { break-inside: avoid; }

.preview-area { flex-direction: column; justify-content: flex-start; }