:root {
  --gray-50: #f8f9fa;
  --gray-100: #f1f3f5;
  --gray-200: #e9ecef;
  --gray-300: #dee2e6;
  --gray-500: #adb5bd;
  --gray-700: #495057;
  --gray-900: #212529;
  --blue: #449fd8;
  --blue-dark: #3a7eae;
  --red: #e03131;
  --red-bg: #fff5f5;
  --green: #2f9e44;
  --green-bg: #ebfbee;
  --radius: 8px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--gray-100);
  color: var(--gray-900);
  line-height: 1.5;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
}

.app-header h1 {
  font-size: 18px;
  margin: 0;
  font-weight: 600;
}

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

.user-email {
  font-size: 14px;
  color: var(--gray-700);
}

.app-main {
  max-width: 820px;
  margin: 32px auto;
  padding: 0 24px;
}

.view { animation: fade 0.15s ease-in; }

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

.card {
  background: #fff;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px;
}

.card.centered {
  text-align: center;
}

.card h2 {
  margin-top: 0;
  font-size: 16px;
  font-weight: 600;
}

.steps {
  display: flex;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0 0 16px 0;
  font-size: 13px;
  color: var(--gray-500);
}

.steps li {
  padding: 4px 12px;
  border-radius: 16px;
  background: var(--gray-200);
}

.steps li.active {
  background: var(--blue);
  color: #fff;
  font-weight: 600;
}

.radio-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 10px;
  cursor: pointer;
}

.radio-row input { margin-top: 4px; }

.actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

.btn {
  font-size: 14px;
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
}

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

.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--blue-dark); }

.btn-secondary {
  background: #fff;
  color: var(--gray-700);
  border-color: var(--gray-300);
}
.btn-secondary:hover:not(:disabled) { background: var(--gray-50); }

.btn-small { padding: 6px 12px; font-size: 13px; }

.muted { color: var(--gray-700); font-size: 14px; }

code {
  background: var(--gray-100);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 13px;
}

input[type="file"] {
  display: block;
  margin: 16px 0;
  font-size: 14px;
}

.summary { font-size: 15px; }

.table-wrap { overflow-x: auto; margin-top: 12px; }

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

th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
}

th { color: var(--gray-700); font-weight: 600; }

tr.gap td {
  text-align: center;
  color: var(--gray-500);
  white-space: normal;
}

.error-text { color: var(--red); }
.success-text { color: var(--green); font-weight: 600; }

.error-list {
  background: var(--red-bg);
  border: 1px solid #ffc9c9;
  border-radius: var(--radius);
  color: var(--red);
  padding: 12px 12px 12px 28px;
  font-size: 14px;
  margin: 12px 0 0 0;
}

.banner {
  padding: 16px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
}

.banner.success { background: var(--green-bg); color: var(--green); }
.banner.partial { background: #fff9db; color: #e67700; }
.banner.error { background: var(--red-bg); color: var(--red); }

.spinner {
  width: 40px;
  height: 40px;
  margin: 0 auto 16px;
  border: 4px solid var(--gray-200);
  border-top-color: var(--blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.hidden { display: none !important; }

/* ---- header nav ---- */
.app-nav {
  display: flex;
  gap: 4px;
  margin: 0 16px;
}

.nav-tab {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 6px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--gray-700);
  cursor: pointer;
}

.nav-tab:hover { background: var(--gray-100); }

.nav-tab.active {
  background: var(--blue);
  color: #fff;
}

/* ---- stats bar ---- */
.stats-bar {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 12px 24px;
  background: #fff;
  border-bottom: 1px solid var(--gray-200);
}

.stats-cell { display: flex; flex-direction: column; gap: 2px; }

.stats-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gray-700);
}

.stats-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--gray-900);
}

.stats-next {
  font-size: 12px;
  color: var(--gray-700);
}

.stats-meta {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
}

/* ---- imports view ---- */
.imports-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.imports-toolbar h2 { margin: 0; }

.imports-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; }

.imports-row td { white-space: nowrap; }

.status-pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  text-transform: capitalize;
}

.status-success { background: var(--green-bg); color: var(--green); }
.status-partial { background: #fff9db; color: #e67700; }
.status-failed  { background: var(--red-bg); color: var(--red); }

.error-detail td {
  background: var(--red-bg);
  color: var(--red);
  white-space: normal;
  font-size: 13px;
}