:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --panel: #ffffff;
  --text: #1d2433;
  --muted: #657085;
  --line: #d9dee8;
  --accent: #176b87;
  --accent-strong: #0f4f65;
  --warning-bg: #fff7e6;
  --warning-line: #f2cf8f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: var(--accent);
}

.topbar {
  align-items: center;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 24px;
  min-height: 64px;
  padding: 0 24px;
}

.brand {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.nav {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  gap: 14px;
}

.nav a {
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
}

.nav a:hover {
  color: var(--accent);
}

.logout {
  margin: 0;
}

button,
.button {
  background: var(--accent);
  border: 0;
  border-radius: 6px;
  color: #ffffff;
  cursor: pointer;
  display: inline-block;
  font: inherit;
  padding: 10px 14px;
  text-decoration: none;
}

button:hover,
.button:hover {
  background: var(--accent-strong);
}

.button.secondary {
  background: #e7eef3;
  color: var(--accent-strong);
}

.page {
  margin: 0 auto;
  max-width: 1160px;
  padding: 32px 24px;
}

.page-header {
  margin-bottom: 24px;
}

.page-header h1,
.content-panel h1 {
  margin: 0 0 8px;
}

.page-header p,
.content-panel p,
.metric-card small {
  color: var(--muted);
}

.metric-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  margin-bottom: 24px;
}

.metric-card,
.content-panel,
.auth-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.metric-card strong {
  display: block;
  font-size: 32px;
  line-height: 1;
}

.metric-card span {
  display: block;
  font-weight: 650;
  margin-top: 8px;
}

.auth-panel {
  margin: 48px auto;
  max-width: 440px;
}

.auth-panel input,
.content-panel input,
.content-panel textarea,
.content-panel select {
  border: 1px solid var(--line);
  border-radius: 6px;
  font: inherit;
  max-width: 100%;
  padding: 8px 10px;
}

.warning {
  background: var(--warning-bg);
  border-color: var(--warning-line);
}

.data-table {
  border-collapse: collapse;
  width: 100%;
}

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

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.actions form {
  margin: 0;
}

.inline-form {
  display: inline-block;
  margin: 0 0 0 8px;
}

.filters,
.bulk-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.filters {
  margin-bottom: 12px;
}

@media (max-width: 720px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 16px;
  }

  .page {
    padding: 20px 16px;
  }
}