/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */

:root {
  /* Color Palette variables */
  --clr-bg-main: hsl(233, 47%, 7%);
  --clr-bg-card: hsl(244, 37%, 16%);
  --clr-accent: hsl(277, 64%, 61%);
  --clr-text-heading: hsl(0, 0%, 100%);
  --clr-text-body: hsla(0, 0%, 100%, 0.75);
  --clr-text-stat-label: hsla(0, 0%, 100%, 0.6);

  /* Typography configuration */
  --ff-primary: 'Inter', sans-serif;
  --ff-secondary: 'Lexend Deca', sans-serif;
  --fs-body: 0.9375rem;
}

/* Custom CSS box sizing reset rules */
*, *::before, *::after {
  box-sizing: border-box;
}

/* Eliminate default margins and paddings across elements */
* {
  margin: 0;
  padding: 0;
}

/* Define viewport layout rules and primary styling */
body {
  font-family: var(--ff-primary);
  font-size: var(--fs-body);
  background-color: var(--clr-bg-main);
  color: var(--clr-text-body);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 1.5rem;
}

/* Ensure images retain natural responsive boundary constraints */
img, picture {
  max-width: 100%;
  display: block;
}

/* ==========================================================================
   LAYOUT CONTAINERS
   ========================================================================== */

/* Main wrapping layout target container */
.container {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-grow: 1;
}

/* ==========================================================================
   CARD COMPONENT (BEM Architecture with CSS Grid)
   ========================================================================== */

/* Component baseline element layout styles using mobile-first Grid */
.stats-card {
  background-color: var(--clr-bg-card);
  border-radius: 0.5rem;
  overflow: hidden;
  text-align: center;
  box-shadow: 0 1.25rem 1.25rem rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 69.375rem; /* Caps card size to exactly 1110px width */
  display: grid;
  grid-template-columns: 1fr;
}

/* Blend configuration parent node container */
.stats-card__image-wrapper {
  background-color: var(--clr-accent);
  position: relative;
}

/* Blend the color overlay directly into target graphic */
.stats-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: multiply;
  opacity: 0.75;
}

/* Structural block padding wrapper for details text block */
.stats-card__content {
  padding: 2.5rem 2rem 2rem 2rem;
}

/* Component heading level layout spacer rules */
.stats-card__header {
  margin-bottom: 2.5rem;
}

/* Component baseline primary text heading formatting */
.stats-card__title {
  color: var(--clr-text-heading);
  font-size: 1.75rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

/* Target highlight color class variation rules */
.stats-card__title--highlight {
  color: var(--clr-accent);
}

/* Layout component copy body block typography specifications */
.stats-card__description {
  font-size: 0.9375rem;
  line-height: 1.667;
}

/* Metric row details container block specifications */
.stats-card__list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Key value container description data items spacing */
.stats-card__stat-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

/* Numerical performance metric output font weight specs */
.stats-card__stat-value {
  color: var(--clr-text-heading);
  font-size: 1.5rem;
  font-weight: 700;
}

/* Secondary font family configurations applied to small tags */
.stats-card__stat-label {
  color: var(--clr-text-stat-label);
  font-family: var(--ff-secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ==========================================================================
   MEDIA QUERIES (Desktop Layout - 64rem / 1024px and up)
   ========================================================================== */

@media (min-width: 64rem) {
  /* Set layout body space limits */
  body {
    padding: 2rem;
  }

  /* Split the card layout into two exactly equal columns */
  .stats-card {
    grid-template-columns: repeat(2, 1fr);
    text-align: left;
    height: 27.875rem;
  }

  /* Place the image track explicitly in the second column */
  .stats-card__image-wrapper {
    grid-column: 2;
  }

  /* Place text track in the first column on the matching row axis */
  .stats-card__content {
    grid-column: 1;
    grid-row: 1;
    padding: 4.5rem 6.25rem 3.75rem 4.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
  }

  /* Reset inner item header spacing models */
  .stats-card__header {
    margin-bottom: 0;
  }

  /* Update title typographic sizes for desktop setups */
  .stats-card__title {
    font-size: 2.25rem;
    line-height: 1.22;
    margin-bottom: 1.5rem;
  }

  /* Constrain block length text parameters safely */
  .stats-card__description {
    padding-right: 2.5rem;
  }

  /* Switch structural direction alignments for metric columns */
  .stats-card__list {
    flex-direction: row;
    gap: 4rem;
  }
}

/* ==========================================================================
   ATTRIBUTION FOOTER
   ========================================================================== */

/* Universal structural footer layout attributes */
.attribution {
  font-size: 0.6875rem;
  text-align: center;
  color: var(--clr-text-stat-label);
  padding: 1rem 0;
  width: 100%;
}

/* Link element decoration controls */
.attribution a {
  color: var(--clr-accent);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

/* Interactions settings on user pointer targeting actions */
.attribution a:hover,
.attribution a:focus {
  text-decoration: underline;
  opacity: 0.8;
}