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

.sidebar {
  width: 220px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 20px 0;
  flex-shrink: 0;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px 24px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.brand-icon {
  font-size: 1.5em;
  color: var(--accent);
}

.brand-text {
  font-weight: 700;
  font-size: 1.05em;
  color: var(--text-bright);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0 8px;
  flex: 1;
}

.sidebar-nav a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 0.9em;
  font-weight: 500;
  transition: all 0.15s;
}

.sidebar-nav a:hover {
  background: var(--bg-elevated);
  color: var(--text);
  text-decoration: none;
}

.sidebar-nav a.active {
  background: var(--accent);
  color: #fff;
}

.sidebar-footer {
  padding: 16px 20px 0;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.version {
  font-size: 0.75em;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.content {
  flex: 1;
  padding: 32px 40px;
  overflow-y: auto;
}

.page-title {
  font-size: 1.5em;
  font-weight: 700;
  color: var(--text-bright);
  margin-bottom: 24px;
}