/**
 * @file
 * Images Slider with thumbnail navigation.
 * Mobile-first responsive design.
 */

/* ========================================
 * Base Styles (Mobile)
 * ======================================== */

:root {
  /* Consistent sizing across all breakpoints */
  --images-slider-thumb-size: 4.5rem; /* 72px */
  --images-slider-thumb-gap: 1rem; /* 16px */
  --images-slider-button-size: 2.5rem; /* 40px - smaller on mobile */
}

/* Main container */
.images-slider {
  /* padding-block: 2rem; */
  padding-inline: 0;
}

.images-slider__inner {
  max-inline-size: 75rem; /* 1200px */
  margin-inline: auto;
  margin-block: 0;
  padding-inline: var(--spacing-sm);
  padding-block: 0;
}

/* Header section */
.images-slider__header {
  margin-block-end: 1.5rem;
  text-align: center;
}

.images-slider__title {
  color: var(--color-brand-green);
}

/* Main gallery */
.images-slider .images-slider__main {
  position: relative;
  margin-inline: auto;
  margin-block-end: 1rem; /* 16px spacing before thumbnails */
  margin-block-start: 0;
  max-inline-size: 65rem; /* 1040px */
  border-radius: 0.5rem;
  overflow: hidden;
}

.images-slider__main .swiper-slide {
  display: flex;
  align-items: center;
  justify-content: center;
}

.images-slider__image-wrapper {
  inline-size: 100%;
  display: block;
  line-height: 0;
}

.images-slider__image {
  inline-size: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  display: block;
  border-radius: 8px;
  max-block-size: none;
}

/* Thumbnail navigation container */
.images-slider__thumb-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--images-slider-thumb-gap);
  max-inline-size: max-content;
  margin-inline: auto;
  margin-block: 0;
  overflow: visible;
}

/* Navigation buttons */
.images-slider__button {
  inline-size: var(--images-slider-button-size);
  block-size: var(--images-slider-button-size);
  border-radius: 0.5rem; 
  background: var(--color-brand-green);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.images-slider__button:hover {
  background: var(--color-brand-dark-blue);
}

.images-slider__button:focus-visible {
  outline: 0.125rem solid var(--color-brand-green); /* 2px */
  outline-offset: 0.125rem; /* 2px */
}

.images-slider__button:disabled,
.images-slider__button.swiper-button-disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.images-slider__button svg {
  color: var(--color-white);
  inline-size: 1.25rem; /* 20px on mobile */
  block-size: 1.25rem;
}

/* Thumbnail gallery */
.images-slider__thumbs {
  overflow-x: clip;
  overflow-y: visible;
  flex: 1;
  min-inline-size: 0;
  padding-block: 0.5rem; /* 8px - extra space for focus outline */
  padding-inline: 0.5rem; /* 8px - prevent focus outline from being cut off on edges */
}

.images-slider__thumbs .swiper-wrapper {
  display: flex;
  justify-content: flex-start;
}

.images-slider__thumbs .swiper-wrapper {
  display: flex;
  justify-content: flex-start;
  gap: var(--images-slider-thumb-gap);
}

.images-slider__thumbs .swiper-slide {
  inline-size: var(--images-slider-thumb-size);
  block-size: var(--images-slider-thumb-size);
  flex-shrink: 0;
}

.images-slider__thumb {
  inline-size: 100%;
  block-size: 100%;
  border: 0.125rem solid transparent; /* 2px */
  border-radius: 0.5rem;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 0;
  display: block;
  background: #f0f0f0;
}

.images-slider__thumb:hover {
  border-color: var(--color-brand-green);
}

.images-slider__thumb:focus-visible {
  outline: 0.125rem dashed var(--color-brand-green); /* 2px */
  outline-offset: 0.25rem; /* 4px */
}

/* Active thumbnail */
.images-slider__thumbs .swiper-slide-thumb-active .images-slider__thumb {
  border-color: var(--color-brand-green);
}

.images-slider__thumb-image {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  display: block;
}

/* ========================================
 * Tablet Styles (768px and up)
 * ======================================== */

@media (min-width: 48rem) {
  .images-slider {
    /* padding-block: 3rem; */
    --images-slider-thumb-gap: 0.75rem; /* 12px */
    --images-slider-button-size: 3rem; /* 48px on tablet+ */
  }

  .images-slider__header {
    margin-block-end: 2rem;
  }

  .images-slider__main {
    margin-block-end: 1.5rem; /* 24px on tablet+ */
  }

  .images-slider__image {
    aspect-ratio: 10 / 7;
    max-block-size: none;
    border-radius: 8px;
    object-fit: cover;
  }

  .images-slider__button svg {
    inline-size: 1.5rem; /* 24px */
    block-size: 1.5rem;
  }

  .images-slider__thumb-nav {
    gap: 0.75rem; /* 12px on tablet */
  }

  .images-slider__thumbs .swiper-wrapper {
    justify-content: center;
  }
}

/* ========================================
 * Desktop Styles (1024px and up)
 * ======================================== */

@media (min-width: 64rem) {
  .images-slider {
    /* padding-block: 4rem; */
    --images-slider-thumb-gap: 1rem; /* 16px */
  }

  .images-slider__header {
    margin-block-end: 3rem;
  }

  .images-slider__thumb-nav {
    gap: 1rem; /* 16px on desktop */
  }

  .images-slider__button svg {
    inline-size: 2rem; /* 32px */
    block-size: 2rem;
  }
}

/* ========================================
 * Accessibility - Reduced Motion
 * ======================================== */

@media (prefers-reduced-motion: reduce) {
  .images-slider__button,
  .images-slider__thumb {
    transition: none;
  }
}