:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --sidebar: #111827;
  --sidebar-text: #d1d5db;
  --sidebar-active: #ffffff;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --border: #e5e7eb;
  --text: #111827;
  --muted: #6b7280;
  --success: #059669;
  --danger: #dc2626;
  --shadow: 0 10px 30px rgba(17, 24, 39, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: var(--bg);
}

.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--sidebar);
  color: var(--sidebar-text);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

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

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
  font-weight: 700;
}

.brand-title {
  margin: 0;
  color: white;
  font-size: 1.05rem;
  font-weight: 700;
}

.brand-subtitle {
  margin: 2px 0 0;
  font-size: 0.82rem;
  color: #9ca3af;
}

.nav-label {
  margin: 0 0 10px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
}

.nav-link {
  display: block;
  padding: 12px 14px;
  margin-bottom: 6px;
  border-radius: 10px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-weight: 600;
  transition: background 0.15s ease, color 0.15s ease;
}

.nav-link:hover,
.nav-link.active {
  background: rgba(255, 255, 255, 0.08);
  color: var(--sidebar-active);
}

.sidebar-footer {
  margin-top: auto;
  font-size: 0.8rem;
  color: #9ca3af;
}

.content {
  padding: 28px 32px 40px;
}

.page-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.page-header h1 {
  margin: 0;
  font-size: 2rem;
}

.page-description {
  margin: 8px 0 0;
  color: var(--muted);
  max-width: 720px;
}

.header-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.meta-line {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

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

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

.btn-secondary {
  background: white;
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: #f9fafb;
}

.summary-cards {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.stable-versions {
  margin-bottom: 20px;
  padding: 18px 20px;
}

.stable-versions-header h2 {
  margin: 0 0 4px;
  font-size: 1.1rem;
}

.stable-versions-header p {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.92rem;
}

.stable-version-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.stable-version-card {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f9fafb;
}

.stable-version-value {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  word-break: break-word;
}

.online-value {
  color: var(--success);
}

.offline-value {
  color: var(--danger);
}

.card,
.panel,
.api-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.card {
  padding: 18px 20px;
}

.card-label {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.card-value {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 700;
}

.panel {
  padding: 18px;
}

.panel-title {
  margin: 0 0 16px;
  font-size: 1.1rem;
}

.panel-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
  margin-bottom: 14px;
}

.search-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 280px;
  font-size: 0.85rem;
  color: var(--muted);
}

.search-field input {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 0.95rem;
}

.toolbar-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.status-banner {
  margin-bottom: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  background: #eff6ff;
  color: #1d4ed8;
}

.status-banner.error {
  background: #fef2f2;
  color: var(--danger);
}

.status-banner.hidden {
  display: none;
}

.table-wrap {
  overflow: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 900px;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  background: #f9fafb;
}

tbody tr:hover {
  background: #f9fafb;
}

tbody tr.acc-off-alert,
tbody tr.offline-alert {
  background: #fef2f2;
}

tbody tr.acc-off-alert:hover,
tbody tr.offline-alert:hover {
  background: #fee2e2;
}

tbody tr.acc-off-alert td,
tbody tr.offline-alert td {
  color: var(--danger);
  font-weight: 600;
}

.alert-value {
  color: var(--danger);
}

.card-value-small {
  font-size: 1rem;
  line-height: 1.35;
}

.photo-cell {
  width: 72px;
}

.face-photo-thumb {
  display: block;
  width: 56px;
  height: 56px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #f3f4f6;
}

.photo-missing {
  display: inline-block;
  color: #9ca3af;
  font-size: 0.82rem;
  font-style: italic;
}

.accuracy-cell {
  font-weight: 600;
  white-space: nowrap;
}

.accuracy-high {
  color: #047857;
}

.accuracy-medium {
  color: #b45309;
}

.accuracy-low {
  color: var(--danger);
}

.result-fail-value {
  color: var(--danger);
}

.result-success-value {
  color: #047857;
}

.result-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 4.5rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.result-success {
  color: #047857;
  background: #ecfdf5;
}

.result-fail {
  color: var(--danger);
  background: #fef2f2;
}

.result-unknown {
  color: #6b7280;
  background: #f3f4f6;
}

tbody tr.face-result-fail {
  background: #fff7f7;
}

tbody tr.face-result-fail:hover {
  background: #fee2e2;
}

.panel-toolbar select {
  min-width: 8rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  font: inherit;
}

.table-pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1rem 0 0.25rem;
}

.version-cell {
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.88rem;
  word-break: break-word;
}

.version-na {
  color: #9ca3af;
  font-style: italic;
}

.status-pill {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
}

.status-pill.online {
  background: #ecfdf5;
  color: var(--success);
}

.status-pill.offline {
  background: #fef2f2;
  color: var(--danger);
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 28px;
}

.api-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.api-card {
  padding: 22px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.api-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(17, 24, 39, 0.12);
}

.api-card h2 {
  margin: 0 0 8px;
}

.api-card p {
  margin: 0 0 14px;
  color: var(--muted);
}

.api-card-link {
  color: var(--accent);
  font-weight: 700;
}

.endpoint-list {
  display: grid;
  gap: 14px;
}

.endpoint {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f9fafb;
}

.endpoint-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.method {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
}

.method.get {
  background: #dbeafe;
  color: #1d4ed8;
}

.endpoint p {
  margin: 0 0 10px;
  color: var(--muted);
}

.endpoint a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

@media (max-width: 1100px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    gap: 16px;
  }

  .summary-cards,
  .api-links,
  .stable-version-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-header {
    flex-direction: column;
  }

  .header-actions {
    align-items: flex-start;
  }
}

@media (max-width: 700px) {
  .content {
    padding: 20px 16px 28px;
  }

  .summary-cards,
  .api-links,
  .stable-version-grid {
    grid-template-columns: 1fr;
  }
}