:root {
  --ink: #0f172a;
  --muted: #64748b;
  --subtle: #94a3b8;
  --line: #e5e9f0;
  --bg: #f5f7fb;
  --card: #ffffff;
  --accent: #4f46e5;
  --accent-dark: #4338ca;
  --accent-soft: #eef2ff;
  --green: #059669;
  --green-soft: #ecfdf5;
  --red: #dc2626;
  --red-soft: #fef2f2;
  --amber: #d97706;
  --amber-soft: #fffbeb;
  --violet: #7c3aed;
  --violet-soft: #f5f3ff;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 14px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.06);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  font-size: 15px;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--violet));
  color: white;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: -0.02em;
  box-shadow: var(--shadow);
}
.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.brand-name { font-weight: 700; font-size: 1.02rem; }
.brand-tag { font-size: 0.72rem; color: var(--muted); font-weight: 500; }

nav { display: flex; align-items: center; gap: 4px; }
nav a {
  padding: 6px 12px;
  border-radius: 7px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.87rem;
  font-weight: 500;
  transition: background 0.12s, color 0.12s;
}
nav a:hover { background: var(--accent-soft); color: var(--accent-dark); }

main {
  max-width: 1040px;
  margin: 0 auto;
  padding: 28px 24px 64px;
}

footer {
  text-align: center;
  padding: 24px;
  color: var(--subtle);
  font-size: 0.8rem;
}

.flash {
  max-width: 1040px;
  margin: 20px auto 0;
  padding: 11px 18px;
  background: var(--accent-soft);
  border: 1px solid #c7d2fe;
  color: var(--accent-dark);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
}

h2 { margin: 0 0 4px; font-size: 1.4rem; letter-spacing: -0.01em; }
h3 { margin: 0 0 2px; color: var(--ink); font-size: 1rem; }

.eyebrow {
  display: block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--subtle);
  margin-bottom: 4px;
}

section { margin-bottom: 36px; }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

/* --- stat cards (queue page) --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}
@media (max-width: 720px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 18px;
  border-top: 3px solid var(--subtle);
}
.stat-card .stat-value { font-size: 1.7rem; font-weight: 700; letter-spacing: -0.02em; }
.stat-card .stat-label { font-size: 0.8rem; color: var(--muted); font-weight: 500; }
.stat-card.accent-all { border-top-color: var(--accent); }
.stat-card.accent-review { border-top-color: var(--amber); }
.stat-card.accent-approved { border-top-color: var(--green); }
.stat-card.accent-rejected { border-top-color: var(--red); }

/* --- filters as segmented control --- */
.filters {
  display: inline-flex;
  background: #eef1f6;
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}
.filters a {
  padding: 6px 14px;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  border-radius: 999px;
}
.filters a.active { background: var(--card); color: var(--ink); box-shadow: var(--shadow); }

/* --- upload dropzone --- */
.upload-box {
  background: var(--card);
  border: 1.5px dashed #c7cede;
  border-radius: var(--radius);
  padding: 22px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.upload-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}
.upload-copy { flex: 1; min-width: 200px; }
.upload-copy h2 { font-size: 1.05rem; margin-bottom: 2px; }
.upload-copy p { margin: 0; color: var(--muted); font-size: 0.86rem; }

.upload-form, .decision-form {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
  flex-wrap: wrap;
}
.decision-forms { display: flex; flex-direction: column; gap: 10px; }

.decision-box {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px 20px;
}

input[type="text"], input[type="file"] {
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 7px;
  font-size: 0.88rem;
  background: white;
}
input[type="text"]:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }

button {
  padding: 8px 18px;
  border: none;
  border-radius: 7px;
  font-size: 0.87rem;
  font-weight: 600;
  cursor: pointer;
  background: var(--accent);
  color: white;
  box-shadow: var(--shadow);
  transition: transform 0.08s, opacity 0.12s;
}
button.approve { background: var(--green); }
button.reject { background: var(--red); }
button:hover { opacity: 0.92; }
button:active { transform: translateY(1px); }

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-variant-numeric: tabular-nums;
}
th, td {
  text-align: left;
  padding: 10px 14px;
  font-size: 0.87rem;
  border-bottom: 1px solid var(--line);
}
thead th {
  background: #f8fafc;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #fafbfd; }
a { color: var(--accent); }
a:hover { color: var(--accent-dark); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--subtle);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 18px;
  margin-bottom: 12px;
}
.card.ok { border-left-color: var(--green); }
.card.fail { border-left-color: var(--red); }
.card-head { margin: 0 0 10px; font-size: 0.82rem; color: var(--muted); font-weight: 500; }

table.fields { box-shadow: none; border: none; }
table.fields th { width: 140px; background: transparent; color: var(--muted); font-weight: 500; text-transform: none; letter-spacing: normal; font-size: 0.87rem; }
table.fields td.confidence { color: var(--subtle); width: 90px; font-weight: 600; }

table.rules { box-shadow: none; }
table.rules tr.sev-error td { color: var(--red); }
table.rules tr.sev-warning td { color: var(--amber); }
table.rules tr.sev-info td { color: var(--muted); }

/* --- summary strip (invoice detail) --- */
.summary-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  margin-bottom: 28px;
  overflow: hidden;
}
.summary-cell {
  padding: 16px 20px;
  border-right: 1px solid var(--line);
}
.summary-cell:last-child { border-right: none; }
.summary-cell .eyebrow { margin-bottom: 6px; }
.summary-cell .value { font-size: 1.05rem; font-weight: 600; letter-spacing: -0.01em; }
.summary-cell .value.muted-value { color: var(--subtle); font-weight: 500; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  background: #e5e7eb;
  color: #374151;
}
.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}
.badge-received, .badge-extracting, .badge-matching, .badge-validating { background: var(--accent-soft); color: var(--accent-dark); }
.badge-extracted { background: #e0e7ff; color: #4338ca; }
.badge-validated { background: var(--violet-soft); color: var(--violet); }
.badge-needs_review { background: var(--amber-soft); color: var(--amber); }
.badge-auto_approved, .badge-approved { background: var(--green-soft); color: var(--green); }
.badge-rejected, .badge-failed { background: var(--red-soft); color: var(--red); }
.badge-exporting, .badge-exported { background: var(--violet-soft); color: var(--violet); }

.meta { color: var(--muted); font-size: 0.9rem; }
.error {
  color: var(--red);
  font-weight: 600;
  background: var(--red-soft);
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 10px 14px;
  display: inline-block;
}
.empty {
  color: var(--muted);
  font-style: normal;
  background: var(--card);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  font-size: 0.88rem;
}
.back {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 14px;
  font-size: 0.86rem;
  font-weight: 600;
  text-decoration: none;
}
code {
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}