:root {
  --bg: #f4f3f0;
  --surface: #ffffff;
  --surface-raised: #faf9f7;
  --border: #ddd9d2;
  --border-strong: #c8c3ba;
  --text: #1a1814;
  --text-secondary: #5c5850;
  --text-tertiary: #8a857c;
  --accent: #1e2a3b;
  --accent-hover: #2a3a52;
  --accent-muted: #e8ecf2;
  --teal: #3d6b5e;
  --teal-bg: #e8f2ef;
  --ok: #1a6b4a;
  --ok-bg: #e6f2ec;
  --warn: #9a6700;
  --warn-bg: #f8f0e0;
  --err: #b42318;
  --err-bg: #fcebea;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --radius: 6px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 2px rgba(26, 24, 20, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 24, 20, 0.08);
  --max: 1120px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
  display: flex;
  flex-direction: column;
}

/* —— Top bar —— */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 1.5rem;
  min-height: 60px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  display: block;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
}

.brand-name {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.topbar-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.topbar-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
}

.topbar-link:hover {
  color: var(--text);
}

/* —— Status chips —— */
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.55rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--surface-raised);
  color: var(--text-secondary);
}

.status-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

.status-chip--ok {
  border-color: #b8d9c8;
  background: var(--ok-bg);
  color: var(--ok);
}

.status-chip--ok::before {
  background: var(--ok);
}

.status-chip--err {
  border-color: #f0c4c0;
  background: var(--err-bg);
  color: var(--err);
}

.status-chip--err::before {
  background: var(--err);
}

.status-chip--loading::before {
  animation: pulse 1.2s ease-in-out infinite;
}

@keyframes pulse {
  50% { opacity: 0.35; }
}

/* —— Layout —— */
.shell {
  flex: 1;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 220px 1fr;
  grid-template-rows: auto auto;
  gap: 1.25rem;
  align-items: start;
}

.sidebar {
  grid-row: 1 / 2;
  grid-column: 1;
  padding-top: 0.25rem;
}

.sidebar-lead {
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.steps {
  margin: 0 0 1.5rem;
  padding: 0 0 0 1.15rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.steps li {
  margin-bottom: 0.5rem;
}

.steps li span {
  font-weight: 600;
  color: var(--text);
}

.trust-note {
  padding: 0.85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.trust-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  margin-bottom: 0.35rem;
}

.trust-note code {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--teal);
}

.trust-desc {
  margin: 0.5rem 0 0;
  font-size: 0.78rem;
  color: var(--text-tertiary);
  line-height: 1.45;
}

.workspace {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.panel-registry {
  grid-column: 1 / -1;
  grid-row: 2;
}

/* —— Panels —— */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.25rem 1.35rem;
}

.panel-head {
  margin-bottom: 0.35rem;
}

.panel-head--split {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.panel-head h2 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.panel-desc {
  margin: 0 0 1.15rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.panel-desc--tight {
  margin: 0.2rem 0 0;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

/* —— Segmented control —— */
.seg-control {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.15rem;
}

.seg {
  margin: 0;
  padding: 0.55rem 0.9rem;
  border: none;
  background: none;
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-tertiary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s;
}

.seg:hover {
  color: var(--text-secondary);
}

.seg-active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* —— Form —— */
.form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field-grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0.85rem;
}

.field-span {
  grid-column: 1 / -1;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.optional {
  font-weight: 400;
  color: var(--text-tertiary);
}

.field-note {
  margin: -0.35rem 0 0;
  font-size: 0.8rem;
  color: var(--text-tertiary);
  line-height: 1.45;
}

input,
select {
  width: 100%;
  padding: 0.5rem 0.65rem;
  font-family: var(--sans);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  transition: border-color 0.12s, box-shadow 0.12s;
}

.mono-input,
input.mono-input {
  font-family: var(--mono);
  font-size: 0.82rem;
}

input:hover,
select:hover {
  border-color: var(--border-strong);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-muted);
}

.file-drop {
  position: relative;
  min-height: 3.25rem;
  padding: 0.85rem 1rem;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-raised);
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}

.file-drop:hover,
.file-drop:focus-visible,
.file-drop.file-drop--over {
  border-color: var(--accent);
  background: var(--accent-muted);
}

.file-drop input[type="file"] {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.file-drop-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
}

.file-drop-text {
  font-size: 0.82rem;
  color: var(--text-tertiary);
  word-break: break-all;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
}

.form-actions {
  padding-top: 0.25rem;
}

.lookup-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 0.65rem;
  align-items: center;
}

.tab-panel.hidden {
  display: none;
}

/* —— Buttons —— */
.btn {
  padding: 0.5rem 1rem;
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s, border-color 0.12s;
}

.btn:hover {
  background: var(--surface-raised);
  border-color: var(--border-strong);
}

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

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

.btn-secondary {
  color: var(--text-secondary);
  background: var(--surface-raised);
}

/* —— Status badges (table) —— */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: capitalize;
}

.badge::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  flex-shrink: 0;
}

.badge-verified { color: var(--ok); }
.badge-verified::before { background: var(--ok); }

.badge-mismatch { color: var(--warn); }
.badge-mismatch::before { background: var(--warn); }

.badge-failed { color: var(--err); }
.badge-failed::before { background: var(--err); }

.badge-pending { color: var(--text-tertiary); }
.badge-pending::before { background: var(--text-tertiary); }

.badge-muted { color: var(--text-tertiary); }
.badge-muted::before { background: var(--border-strong); }

/* Status labels (used by app.js) */
.pill-verified { color: var(--ok); }
.pill-mismatch { color: var(--warn); }
.pill-failed { color: var(--err); }
.pill-pending { color: var(--text-tertiary); }
.pill-muted { color: var(--text-tertiary); }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0;
  border-radius: 0;
  background: none;
  text-transform: capitalize;
}

.pill-verified::before,
.pill-mismatch::before,
.pill-failed::before,
.pill-pending::before,
.pill-muted::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
}

.pill-verified { color: var(--ok); }
.pill-verified::before { background: var(--ok); }
.pill-mismatch { color: var(--warn); }
.pill-mismatch::before { background: var(--warn); }
.pill-failed { color: var(--err); }
.pill-failed::before { background: var(--err); }
.pill-pending { color: var(--text-tertiary); }
.pill-pending::before { background: var(--text-tertiary); }
.pill-muted { color: var(--text-tertiary); }
.pill-muted::before { background: var(--border-strong); }

/* —— Table —— */
.table-scroll {
  overflow-x: auto;
  margin: 0 -0.15rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.data-table th {
  padding: 0.55rem 0.75rem;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
  background: var(--surface-raised);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.data-table tbody tr:last-child td {
  border-bottom: none;
}

.data-table tbody tr:hover td {
  background: #faf9f7;
}

.table-empty {
  text-align: center;
  color: var(--text-tertiary);
  padding: 2.5rem 1rem !important;
}

.mono {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  word-break: break-all;
}

.data-table a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--teal);
  text-decoration: none;
}

.data-table a:hover {
  text-decoration: underline;
}

.link-quiet {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
}

.link-quiet:hover {
  color: var(--text);
}

/* —— Results —— */
.result {
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  font-size: 0.875rem;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 3px solid var(--border-strong);
}

.result.hidden {
  display: none;
}

.result--ok {
  border-left-color: var(--ok);
  background: var(--ok-bg);
}

.result--err {
  border-left-color: var(--err);
  background: var(--err-bg);
}

.result pre {
  margin: 0.65rem 0 0;
  padding: 0.75rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  line-height: 1.45;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
  white-space: pre-wrap;
}

code {
  font-family: var(--mono);
  font-size: 0.85em;
  padding: 0.1rem 0.3rem;
  background: var(--accent-muted);
  border-radius: 3px;
  color: var(--accent);
}

/* —— Footer —— */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.65rem;
  padding: 1.25rem 1.5rem;
  font-size: 0.8rem;
  color: var(--text-tertiary);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.site-footer a {
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--teal);
}

.footer-dot {
  opacity: 0.45;
}

/* —— Responsive —— */
@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .sidebar {
    grid-row: auto;
    grid-column: 1;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
  }

  .workspace {
    grid-column: 1;
  }

  .field-grid,
  .lookup-row {
    grid-template-columns: 1fr;
  }

  .topbar {
    padding: 0 1rem;
  }
}

/* Verification detail card (lookup + submit result) */
.verif-card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.verif-head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.verif-trust {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  font-family: var(--mono);
}
.detail-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.3rem;
}
.detail-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.86rem;
  padding: 0.25rem 0;
  border-bottom: 1px dashed var(--border);
}
.detail-key {
  color: var(--text-secondary);
  white-space: nowrap;
}
.detail-val {
  text-align: right;
  word-break: break-all;
}
.detail-group {
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
}
.detail-group-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}
.callout {
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  font-size: 0.84rem;
  line-height: 1.45;
}
.callout--ok { background: var(--ok-bg); color: var(--ok); }
.callout--warn { background: var(--warn-bg); color: var(--warn); }
.callout--muted { background: var(--accent-muted); color: var(--text-secondary); }

.source-block {
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}
.source-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.source-files {
  margin-top: 0.75rem;
}
.files-head,
.files-empty {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}
.files-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 220px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.files-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.75rem;
  padding: 0.25rem 0.6rem;
  border-bottom: 1px solid var(--border);
}
.files-list li:last-child { border-bottom: none; }
.file-link {
  background: none;
  border: none;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0;
  text-align: left;
  word-break: break-all;
}
.file-link:hover { text-decoration: underline; }
.file-size {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  white-space: nowrap;
}
.verifier-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.verifier-row {
  font-size: 0.82rem;
  font-family: var(--mono);
}
.verifier-row--ok .verifier-mark { color: var(--ok); }
.verifier-row--warn .verifier-mark { color: var(--warn); }
.verifier-row--muted .verifier-mark { color: var(--text-tertiary); }
.verifier-mark { font-weight: 600; }

.file-preview {
  margin-top: 0.6rem;
  max-height: 320px;
  overflow: auto;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  font-size: 0.78rem;
  white-space: pre-wrap;
  word-break: break-word;
}