:root {
  color-scheme: light;
  --background: #f5f7f9;
  --surface: #ffffff;
  --border: #d8dee6;
  --text: #1d2733;
  --muted: #667085;
  --accent: #0f766e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: #15202b;
  color: #ffffff;
  padding: 20px;
}

.sidebar-logo {
  color: #ffffff;
  font-weight: 700;
  text-decoration: none;
}

.app-main {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-width: 0;
}

.navbar,
.footer {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
}

.footer {
  border-top: 1px solid var(--border);
  border-bottom: 0;
  color: var(--muted);
  font-size: 14px;
}

.page-content {
  flex: 1;
  padding: 32px 24px;
}

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

.page-header h1 {
  margin: 0;
  font-size: 28px;
}

.page-header p {
  margin: 8px 0 0;
  color: var(--muted);
}

.status-panel {
  max-width: 720px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  background: var(--surface);
  padding: 24px;
}

.status-panel p {
  margin: 0;
}

.auth-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
}

@media (max-width: 768px) {
  .app-shell {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
  }
}