/**
 * @file
 * Provides pure CSS3 nativegrid based on Grid Layout without JavaScript.
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout
 * Below is the less-robust version of GridStack layouts.
 * Specific for Masonry, add a min-height to the .b-nativegrid to avoid
 * reflow due to using JS.
 *
 * Classes:
 *  - .is-b-nativegrid, as the original two-dimensional, the real Native Grid.
 *  - .is-b-masonry, as the tweaked one-dimensional, the Masonry.
 */

/* csslint ignore:start */
/* The gap 15px is to match CSS grid convention such as Bootstrap, adjust it. */
:root {
  --bn-col-gap: 15px;
  --bn-row-height-native: 80px;
  /* Since 3.0.7, these values are to determine multi-breakpoint grids with
  min-max device widths, basically just to make grid_medium value kicks in
  within this range. If changed, be sure to update its media query far below. */
  --bn-md: 768px;
  --bn-lg: 1024px;
}

.b-nativegrid,
.blazy.b-nativegrid,
.item-list > .b-nativegrid {
  position: relative;
  display: block;
  clear: both;
  overflow: hidden;
  width: 100%;
  margin: 0 auto;
  list-style: none;
}

ul.blazy.b-nativegrid {
  padding: 0;
}

.b-nativegrid > .grid,
.item-list > .b-nativegrid > .grid {
  display: block;
  width: 100%;
  min-height: 40px;
  margin: 0 0 var(--bn-col-gap);
  padding: 0;
  /* At most grids, transition is causing issues than helpful. */
  transition: none;
}

/** Without margin. */
.is-b-gapless > .grid,
.item-list > .is-b-gapless > .grid {
  margin: 0;
}

.b-nativegrid .grid__content,
.b-nativegrid .region__content {
  height: 100%;
}

/** 480px = 30em with 16px base font. */
@media only screen and (min-width: 480px) {
  .b-nativegrid > .grid,
  .item-list > .b-nativegrid > .grid {
    margin-bottom: 0;
  }

  .b-nativegrid {
    gap: var(--bn-col-gap);
    grid-template-columns: auto;
    /* Use min-content if to make perfectly calculated non-bg images fit. */
    grid-auto-rows: var(--bn-row-height-native);
    /* bad for bg: align-items: start; */
    /* align-content: start;
    justify-content: start;  */
  }

  .b-nativegrid,
  .blazy.b-nativegrid,
  .item-list > .b-nativegrid {
    display: grid;
    grid-auto-flow: row dense;
  }

  /** Without margin. */
  .b-nativegrid.is-b-gapless {
    gap: 0; /* csslint allow: known-properties, gap */
  }

  .b-nativegrid > .grid,
  .item-list > .b-nativegrid > .grid {
    display: flex;
    flex-wrap: wrap;
    /* @todo recheck align-self is broken. */
    align-items: start;
    justify-content: start;
  }

  /** Adjust the minimum accordingly like everything else. */
  .is-b-nativegrid > .grid {
    grid-row: span 2;
    grid-column: auto;
  }

  .is-b-nativegrid:not(.b-layout) .grid__content {
    overflow: hidden;
    height: 100%;
  }

  /* Add more relevant selectors accordingly to make gapless grids.
  Remove .is-b-nativegrid to make it fit height-width for Masonry as well, if needed. */
  .is-b-nativegrid:not(.b-layout) .b-cover,
  .is-b-nativegrid:not(.b-layout) .b-link,
  .is-b-nativegrid:not(.b-layout) .litebox,
  .is-b-nativegrid:not(.b-layout) .b-bg,
  .is-b-nativegrid:not(.b-layout) iframe,
  .is-b-nativegrid:not(.b-layout) picture,
  .is-b-nativegrid:not(.b-layout) video,
  .is-b-nativegrid:not(.b-layout) .media,
  .is-b-nativegrid:not(.b-layout) img.media__element,
  .is-b-nativegrid:not(.b-layout) .slide__media {
    position: static; /* To keep lightbox/ video icon centered. */
    width: 100%;
    height: inherit;
    /* Aspect ratio is irrelevant for gapless grid. */
    padding: 0 !important; /* csslint allow: known-properties, important */
    object-fit: cover;
  }

  .is-b-nativegrid .b-html.b-loaded > img {
    position: absolute;
    z-index: -1;
    width: 0;
    object-fit: none;
  }

  /* For some reason, unlike video, etc., iframe refuses to show when static. */
  .is-b-nativegrid:not(.b-layout) .grid iframe {
    position: absolute;
    height: 100%;
  }

  /* Olivero surprises, adjust it. */
  .is-b-nativegrid:not(.b-layout) .blazy__caption h2 {
    margin: 0;
    color: #fff;
    font-size: 1.25rem;
    line-height: 1.6rem;
  }

  /* To avoid initial confusion due to being overflow: hidden, adjust it. */
  .is-b-nativegrid:not(.b-layout) .blazy__caption,
  .is-b-nativegrid:not(.b-layout) .slide__caption {
    position: absolute;
    z-index: 3;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 10px 15px;
    text-align: center;
    color: #fff;
    background: rgba(0, 0, 0, 0.8);
  }

  /* The only rule make sense for small devices, adjust it accordingly. */
  .b-nativegrid--sm-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/** 640px = 40em with 16px base font. */
@media only screen and (min-width: 640px) {
  .b-nativegrid--md-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .b-nativegrid--md-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .b-nativegrid--md-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .b-nativegrid--md-5 {
    grid-template-columns: repeat(5, 1fr);
  }

  .b-nativegrid--md-6 {
    grid-template-columns: repeat(6, 1fr);
  }

  .b-nativegrid--md-7 {
    grid-template-columns: repeat(7, 1fr);
  }

  .b-nativegrid--md-8 {
    grid-template-columns: repeat(8, 1fr);
  }

  .b-nativegrid--md-9 {
    grid-template-columns: repeat(9, 1fr);
  }

  .b-nativegrid--md-10 {
    grid-template-columns: repeat(10, 1fr);
  }

  .b-nativegrid--md-11 {
    grid-template-columns: repeat(11, 1fr);
  }

  .b-nativegrid--md-12 {
    grid-template-columns: repeat(12, 1fr);
  }
}

/**
 * 768px = 48em with 16px base font.
 *
 * Since 3.0.7, supports multi-breakpoint grids for grid and grid_medium.
 */
@media only screen and (min-width: 768px) {
  /* Default for two-dimensional layout. */
  .b-nativegrid {
    grid-template-columns: repeat(12, 1fr);
  }

  /* Configurable one-dimensional layouts. */
  .b-nativegrid--lg-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .b-nativegrid--lg-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .b-nativegrid--lg-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .b-nativegrid--lg-5 {
    grid-template-columns: repeat(5, 1fr);
  }

  .b-nativegrid--lg-6 {
    grid-template-columns: repeat(6, 1fr);
  }

  .b-nativegrid--lg-7 {
    grid-template-columns: repeat(7, 1fr);
  }

  .b-nativegrid--lg-8 {
    grid-template-columns: repeat(8, 1fr);
  }

  .b-nativegrid--lg-9 {
    grid-template-columns: repeat(9, 1fr);
  }

  .b-nativegrid--lg-10 {
    grid-template-columns: repeat(10, 1fr);
  }

  .b-nativegrid--lg-11 {
    grid-template-columns: repeat(11, 1fr);
  }

  .b-nativegrid--lg-12 {
    grid-template-columns: repeat(12, 1fr);
  }

  /* Dimensions for two-dimensional layout. */
  /** grid-row == height */
  .b-nativegrid > [data-b-h="1"] {
    grid-row: span 1;
  }

  .b-nativegrid > [data-b-h="2"] {
    grid-row: span 2;
  }

  .b-nativegrid > [data-b-h="3"] {
    grid-row: span 3;
  }

  .b-nativegrid > [data-b-h="4"] {
    grid-row: span 4;
  }

  .b-nativegrid > [data-b-h="5"] {
    grid-row: span 5;
  }

  .b-nativegrid > [data-b-h="6"] {
    grid-row: span 6;
  }

  .b-nativegrid > [data-b-h="7"] {
    grid-row: span 7;
  }

  .b-nativegrid > [data-b-h="8"] {
    grid-row: span 8;
  }

  .b-nativegrid > [data-b-h="9"] {
    grid-row: span 9;
  }

  .b-nativegrid > [data-b-h="10"] {
    grid-row: span 10;
  }

  .b-nativegrid > [data-b-h="11"] {
    grid-row: span 11;
  }

  .b-nativegrid > [data-b-h="12"] {
    grid-row: span 12;
  }

  /** grid-column == width */
  .b-nativegrid > [data-b-w="1"] {
    grid-column: span 1;
  }

  .b-nativegrid > [data-b-w="2"] {
    grid-column: span 2;
  }

  .b-nativegrid > [data-b-w="3"] {
    grid-column: span 3;
  }

  .b-nativegrid > [data-b-w="4"] {
    grid-column: span 4;
  }

  .b-nativegrid > [data-b-w="5"] {
    grid-column: span 5;
  }

  .b-nativegrid > [data-b-w="6"] {
    grid-column: span 6;
  }

  .b-nativegrid > [data-b-w="7"] {
    grid-column: span 7;
  }

  .b-nativegrid > [data-b-w="8"] {
    grid-column: span 8;
  }

  .b-nativegrid > [data-b-w="9"] {
    grid-column: span 9;
  }

  .b-nativegrid > [data-b-w="10"] {
    grid-column: span 10;
  }

  .b-nativegrid > [data-b-w="11"] {
    grid-column: span 11;
  }

  .b-nativegrid > [data-b-w="12"] {
    grid-column: span 12;
  }
}
