/* ============================================================
   Xero AP Invoice Reader
   Editorial / finance-software aesthetic
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700&family=JetBrains+Mono:wght@400;500&family=Inter:wght@400;500;600&display=swap');

:root {
  --ink: #1a1814;
  --ink-soft: #4a463f;
  --paper: #f7f3ec;
  --paper-soft: #efe9dd;
  --line: #d8cfbc;
  --accent: #0d4f3c;        /* deep ledger green */
  --accent-soft: #e6efe9;
  --alert: #a33b1f;         /* warm red */
  --alert-soft: #f5e3dd;
  --warn: #8a6500;          /* mustard */
  --warn-soft: #f3ebd0;
  --info: #2c4870;
  --info-soft: #e3eaf3;

  --serif: 'Fraunces', Georgia, serif;
  --sans: 'Inter', -apple-system, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', monospace;
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--ink);
  margin: 0;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

a:hover {
  opacity: 0.7;
}

/* ============================================================
   Layout
   ============================================================ */

.shell {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 2.5rem 5rem;
}

.masthead {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 1.25rem;
  margin-bottom: 3rem;
}

.masthead h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 2.25rem;
  letter-spacing: -0.015em;
  margin: 0;
  line-height: 1;
}

.masthead h1 em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

.masthead .meta {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.demo-pill {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  background: var(--warn-soft);
  color: var(--warn);
  padding: 0.25rem 0.6rem;
  border-radius: 0;
  border: 1px solid var(--warn);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-right: 0.5rem;
}

/* ============================================================
   Upload zone
   ============================================================ */

.upload-zone {
  border: 2px dashed var(--line);
  background: var(--paper-soft);
  padding: 3rem 2rem;
  text-align: center;
  margin-bottom: 3rem;
  transition: all 0.15s ease;
  cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragging {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.upload-zone h2 {
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

.upload-zone p {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 0;
}

.upload-zone input[type=file] {
  display: none;
}

#upload-status {
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--ink-soft);
  min-height: 1.2rem;
}

#upload-status .ok { color: var(--accent); }
#upload-status .err { color: var(--alert); }

/* ============================================================
   Sections (New / Recurring / To Split)
   ============================================================ */

.section {
  margin-bottom: 3.5rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.75rem;
}

.section-head h2 {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.015em;
}

.section-head .count {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.section-head .description {
  font-size: 0.85rem;
  color: var(--ink-soft);
  font-style: italic;
  margin-left: auto;
}

.empty {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-soft);
  padding: 1.5rem 0;
}

/* ============================================================
   Bill cards
   ============================================================ */

.bill-list {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.bill-card {
  display: grid;
  grid-template-columns: 2.5fr 1.5fr 1fr 1fr auto;
  gap: 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--paper);
  align-items: center;
  text-decoration: none;
  border-bottom: none;
  color: inherit;
  transition: background 0.1s ease;
}

.bill-card:hover {
  background: var(--paper-soft);
}

.bill-card .supplier {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.bill-card .invnum {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.bill-card .meta {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.bill-card .amount {
  font-family: var(--serif);
  font-variant-numeric: tabular-nums;
  font-size: 1.1rem;
  font-weight: 500;
  text-align: right;
}

.bill-card .amount .ccy {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--ink-soft);
  margin-left: 0.35rem;
}

.bill-card .flags-mini {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.flag {
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.4rem;
  border: 1px solid;
}

.flag.alert { color: var(--alert); border-color: var(--alert); background: var(--alert-soft); }
.flag.warn { color: var(--warn); border-color: var(--warn); background: var(--warn-soft); }
.flag.info { color: var(--info); border-color: var(--info); background: var(--info-soft); }

/* ============================================================
   Bill detail
   ============================================================ */

.detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  height: calc(100vh - 200px);
}

.pdf-pane {
  border: 1px solid var(--line);
  background: white;
  overflow: hidden;
}

.pdf-pane iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.review-pane {
  overflow-y: auto;
  padding-right: 1rem;
}

.field-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.field label {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.field input,
.field select {
  font-family: var(--sans);
  font-size: 0.95rem;
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
  border-radius: 0;
}

.field input:focus,
.field select:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
  border-color: var(--accent);
}

.field .original {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--warn);
}

.flags-banner {
  background: var(--paper-soft);
  border-left: 3px solid var(--warn);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}

.flags-banner h3 {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 0.5rem;
  color: var(--warn);
}

.flags-banner ul {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.85rem;
  color: var(--ink);
}

.flags-banner li {
  margin-bottom: 0.25rem;
}

.lines-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 1rem;
}

.lines-table th {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: left;
  border-bottom: 2px solid var(--ink);
  padding: 0.5rem 0.4rem;
  color: var(--ink-soft);
  font-weight: 500;
}

.lines-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.6rem 0.4rem;
  vertical-align: top;
}

.lines-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.lines-table input,
.lines-table select {
  width: 100%;
  font-family: var(--sans);
  font-size: 0.8rem;
  padding: 0.25rem 0.35rem;
  border: 1px solid transparent;
  background: transparent;
}

.lines-table tr:hover input,
.lines-table tr:hover select,
.lines-table input:focus,
.lines-table select:focus {
  border-color: var(--line);
  background: white;
}

.line-notes {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--warn);
  margin-top: 0.25rem;
}

.actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.btn {
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.65rem 1.5rem;
  border: 1px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  cursor: pointer;
  border-radius: 0;
  letter-spacing: 0.01em;
  transition: all 0.1s ease;
}

.btn:hover {
  background: var(--ink);
  color: var(--paper);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.section-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.section-tab {
  font-family: var(--mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1.25rem;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--ink-soft);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}

.section-tab.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
  font-weight: 500;
}

.confidence-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--ink-soft);
}

.confidence-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.confidence-dot.med { background: var(--warn); }
.confidence-dot.low { background: var(--alert); }

.back-link {
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  display: inline-block;
  margin-bottom: 1rem;
}

@media (max-width: 1000px) {
  .detail-layout { grid-template-columns: 1fr; height: auto; }
  .pdf-pane { height: 600px; }
  .bill-card { grid-template-columns: 1fr; gap: 0.4rem; }
  .bill-card .amount { text-align: left; }
  .bill-card .flags-mini { justify-content: flex-start; }
}