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

.sidebar {
  width: 260px;
  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: 24px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 40px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-muted);
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all var(--transition-fast);
}

.nav-item:hover, .nav-item.active {
  background-color: var(--color-bg);
  color: var(--color-text);
}

.nav-item i {
  width: 20px;
}

.main-content {
  flex: 1;
  padding: 40px 60px;
  max-width: 1000px;
  margin: 0 auto;
}

.flash-messages {
  margin-bottom: 24px;
}

/* Mobile responsive */
@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    padding: 16px;
  }
  .nav-menu {
    flex-direction: row;
    overflow-x: auto;
    padding-bottom: 8px;
  }
  .main-content {
    padding: 24px 16px;
  }
}