ImageGallery image

---
interface Props {
  images: { src: string; alt?: string; caption?: string; }[];
  columns?: 2 | 3 | 4;
  gap?: 'sm' | 'md' | 'lg';
  rounded?: boolean;
  eyebrow?: string;
  headline?: string;
}

const {
  images,
  columns = 3,
  gap = 'md',
  rounded = true,
  eyebrow,
  headline,
} = Astro.props;

const gapMap = { sm: '0.5rem', md: '1rem', lg: '1.5rem' };
const gapValue = gapMap[gap];
---

<section class="ig__section">
  {(eyebrow || headline) && (
    <div class="ig__header">
      {eyebrow && <p class="ig__eyebrow">{eyebrow}</p>}
      {headline && <h2 class="ig__headline">{headline}</h2>}
    </div>
  )}

  <div
    class="ig__grid"
    data-columns={columns}
    style={`--ig-columns: ${columns}; --ig-gap: ${gapValue};`}
  >
    {images.map((image, index) => (
      <div
        class={`ig__item${rounded ? ' ig__item--rounded' : ''}`}
        style={`--ig-delay: ${index * 80}ms;`}
      >
        <div class="ig__img-wrap">
          <img
            src={image.src}
            alt={image.alt ?? ''}
            class="ig__img"
            loading="lazy"
            decoding="async"
          />
          {image.caption && (
            <div class="ig__caption">
              <span class="ig__caption-text">{image.caption}</span>
            </div>
          )}
        </div>
      </div>
    ))}
  </div>
</section>

<script>
  const grids = document.querySelectorAll<HTMLElement>('.ig__grid');

  grids.forEach((grid) => {
    const items = grid.querySelectorAll<HTMLElement>('.ig__item');

    const observer = new IntersectionObserver(
      (entries) => {
        entries.forEach((entry) => {
          if (entry.isIntersecting) {
            const el = entry.target as HTMLElement;
            el.classList.add('ig__item--visible');
            observer.unobserve(el);
          }
        });
      },
      { threshold: 0.1, rootMargin: '0px 0px -40px 0px' }
    );

    items.forEach((item) => observer.observe(item));
  });
</script>

<style>
  :root {
    --color-primary: #0a0a0a;
    --color-accent: #6366f1;
    --color-bg: #fff;
    --color-muted: #6b7280;
    --radius: 0.5rem;
  }

  .ig__section {
    padding: 4rem 1.5rem;
    background: var(--color-bg);
  }

  .ig__header {
    text-align: center;
    margin-bottom: 2.5rem;
  }

  .ig__eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin: 0 0 0.5rem;
  }

  .ig__headline {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--color-primary);
    margin: 0;
    line-height: 1.15;
  }

  .ig__grid {
    display: grid;
    grid-template-columns: repeat(var(--ig-columns, 3), 1fr);
    gap: var(--ig-gap, 1rem);
    max-width: 1200px;
    margin: 0 auto;
  }

  .ig__item {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.5s ease var(--ig-delay, 0ms), transform 0.5s ease var(--ig-delay, 0ms);
  }

  .ig__item--visible {
    opacity: 1;
    transform: translateY(0);
  }

  .ig__img-wrap {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
  }

  .ig__item--rounded .ig__img-wrap {
    border-radius: var(--radius);
  }

  .ig__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.35s ease, filter 0.35s ease;
  }

  .ig__img-wrap:hover .ig__img {
    transform: scale(1.03);
    filter: brightness(1.05);
  }

  .ig__caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem 1rem 0.75rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.65) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  .ig__img-wrap:hover .ig__caption {
    opacity: 1;
  }

  .ig__caption-text {
    color: #fff;
    font-size: 0.8125rem;
    line-height: 1.4;
  }

  /* Responsive breakpoints */
  @media (max-width: 768px) {
    .ig__grid[data-columns='4'] {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (max-width: 640px) {
    .ig__grid[data-columns='3'],
    .ig__grid[data-columns='4'] {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (max-width: 480px) {
    .ig__grid {
      grid-template-columns: 1fr !important;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    * {
      animation: none !important;
      transition: none !important;
    }
  }
</style>