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

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  z-index: 100;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-logo {
  font-size: 1.5rem;
  color: var(--color-primary);
}

.sidebar-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.02em;
}

.sidebar-nav {
  flex: 1;
  padding: 0.75rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--sidebar-text);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-item i {
  width: 1.25rem;
  text-align: center;
  font-size: 1rem;
}

.nav-item:hover {
  background: var(--sidebar-hover);
  color: #fff;
}

.nav-item.active {
  background: var(--color-primary);
  color: #fff;
}

.sidebar-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-version {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1rem;
}

.topbar-menu-btn {
  display: flex;
  width: 2.25rem;
  height: 2.25rem;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  cursor: pointer;
}

.topbar-menu-btn:hover {
  background: var(--color-surface-hover);
}

.topbar-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
}

.topbar-spacer {
  flex: 1;
}

.topbar-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.topbar-dolar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.75rem;
  background: var(--color-warning-light);
  border-radius: var(--radius-md);
  color: #92400e;
  font-size: 0.85rem;
  font-weight: 600;
}

.page-container {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
}

.loading-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 3rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.loading-indicator i {
  font-size: 1.25rem;
}

.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 99;
}

.sidebar-backdrop.open {
  display: block;
}

@media (max-width: 768px) {
  .sidebar {
    display: none;
    width: 280px;
  }

  .sidebar.open {
    display: flex;
  }

  .main-content {
    margin-left: 0;
  }

  .page-container {
    padding: 1rem;
  }

  .sidebar-header {
    padding: 1rem 1.25rem;
  }

  .sidebar-title {
    font-size: 1.1rem;
  }

  .sidebar-nav {
    padding: 0.5rem;
  }

  .nav-item {
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 420px) {
  .sidebar {
    width: 100%;
  }

  .topbar {
    padding: 0 0.5rem;
  }

  .topbar-title {
    font-size: 0.9rem;
  }

  .page-container {
    padding: 0.5rem;
  }

  .topbar-dolar {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
  }

  .topbar-menu-btn {
    font-size: 1rem;
    width: 2rem;
    height: 2rem;
  }
}