:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --border: #e3e7ef;
  --text: #0f172a;
  --muted: #64748b;
  --primary: #1e3a8a;
  --primary-hover: #1e40af;
  --primary-soft: #eef2ff;
  --ok: #15803d;
  --ok-soft: #ecfdf3;
  --fail: #b91c1c;
  --fail-soft: #fef2f2;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

code {
  background: var(--primary-soft);
  color: var(--primary);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12.5px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand-title {
  font-weight: 600;
  font-size: 15px;
}

.brand-sub,
.muted {
  color: var(--muted);
}

.link {
  color: var(--primary);
  font-weight: 500;
  text-decoration: none;
}

.link:hover {
  text-decoration: underline;
}

.container {
  max-width: 1120px;
  margin: 28px auto;
  padding: 0 24px;
  display: grid;
  gap: 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

h1,
h2 {
  margin: 0 0 4px;
  font-size: 18px;
  font-weight: 600;
}

.card > p {
  margin: 0 0 20px;
}

.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 32px 16px;
  border: 1.5px dashed #c7cfdf;
  border-radius: var(--radius);
  background: #fafbfe;
  color: var(--muted);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--primary);
  background: var(--primary-soft);
}

.dropzone svg {
  color: var(--primary);
}

.dropzone strong {
  color: var(--primary);
}

.dropzone.has-file #dropText {
  color: var(--text);
  font-weight: 500;
}

.hint {
  font-size: 12px;
}

.preview {
  margin-top: 16px;
}

.preview-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.preview .table-wrap {
  max-height: 260px;
}

.row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.lookup-row {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  flex-wrap: wrap;
}

.lookup-result {
  margin-top: 20px;
}

.kv {
  display: grid;
  grid-template-columns: minmax(160px, 220px) 1fr;
  margin: 12px 0 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 13px;
}

.kv dt,
.kv dd {
  margin: 0;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}

.kv dt {
  color: var(--muted);
  font-weight: 500;
  background: #f8fafc;
}

.kv dd {
  white-space: pre-line;
  max-height: 320px;
  overflow: auto;
}

.kv dt:nth-last-of-type(1),
.kv dd:last-child {
  border-bottom: 0;
}

.field {
  display: grid;
  gap: 6px;
  min-width: 280px;
}

.field span {
  font-weight: 500;
}

.field em {
  color: var(--muted);
  font-style: normal;
  font-weight: 400;
}

.field small {
  color: var(--muted);
}

.field input {
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font: inherit;
  max-width: 220px;
}

.field input:focus {
  outline: 2px solid var(--primary-soft);
  border-color: var(--primary);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 20px;
  border: 0;
  border-radius: 8px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn.secondary {
  height: 32px;
  padding: 0 14px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
}

.btn.secondary:hover {
  background: #e0e7ff;
}

.lookup-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.alert {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 8px;
}

.alert.error {
  background: var(--fail-soft);
  color: var(--fail);
  border: 1px solid #fecaca;
}

.result-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin: 20px 0;
}

.stat {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  display: grid;
  gap: 2px;
}

.stat span {
  color: var(--muted);
  font-size: 12.5px;
}

.stat strong {
  font-size: 22px;
}

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

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

.table-wrap {
  overflow: auto;
  max-height: 520px;
  border: 1px solid var(--border);
  border-radius: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

th,
td {
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}

th {
  position: sticky;
  top: 0;
  background: #f8fafc;
  color: var(--muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: 0;
}

td.multiline {
  white-space: pre-line;
  min-width: 260px;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

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

.badge.fail {
  background: var(--fail-soft);
  color: var(--fail);
}

.reason {
  display: block;
  margin-top: 4px;
  color: var(--fail);
  font-size: 12px;
  min-width: 200px;
  max-width: 280px;
}

@media (max-width: 640px) {
  .topbar {
    padding: 12px 16px;
  }

  .container {
    padding: 0 12px;
  }

  .stats,
  .kv {
    grid-template-columns: 1fr;
  }
}