.demo-app {
  min-height: 100vh;
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

// Header
.demo-header {
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;

  &__title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
  }

  &__subtitle {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    flex: 1;
  }

  &__actions {
    display: flex;
    gap: 0.5rem;
  }
}

// Button
.demo-btn {
  padding: 0.5rem 1rem;
  border-radius: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);

  &:hover {
    border-color: var(--color-text-secondary);
  }

  &--ghost {
    background: transparent;
  }
}

// Navigation
.demo-nav {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0;

  &__item {
    padding: 0.5rem 1rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    margin-bottom: -1px;

    &:hover {
      color: var(--color-text-primary);
    }

    &--active {
      color: var(--color-primary);
      border-bottom-color: var(--color-primary);
    }
  }
}

// Grid
.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 1.5rem;
}

// Card
.demo-card {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  padding: 1.5rem;
  overflow: hidden;

  &--wide {
    grid-column: span 1;
  }

  &--full {
    grid-column: 1 / -1;
  }

  &--center {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  &__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
  }
}

// Layout helpers
.demo-row {
  display: flex;
  align-items: center;
  gap: 1rem;

  &--between {
    justify-content: space-between;
    width: 100%;
  }
}

.demo-stack {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
}