/* ===========================================================
   GLOBAL RESET / BASE
   -----------------------------------------------------------
   - Keeps layout predictable across browsers
   =========================================================== */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: #000;                     /* dark backdrop for contrast */
  color: #111;
  font-family: system-ui, Arial, sans-serif;
}

/* ===========================================================
   PAGE CONTAINER (index.html)
   -----------------------------------------------------------
   - Constrains total width and centers the page
   - Matches your index.html markup (.page-wrapper)
   =========================================================== */
.page-wrapper {
  width: 100%;
  max-width: 1000px;                    /* overall site/container width */
  margin: 0 auto;                       /* centered */
  background: #000000;
  border: 1px solid #000000;            /* outer outline so you can “see” container */
}

/* ===========================================================
   HEADER (simple demo header used on index)
   -----------------------------------------------------------
   - If you later reuse your gallery header, keep class names consistent
   =========================================================== */
.site-header {
  display: flex;
  justify-content: space-between;       /* logo left, nav right */
  align-items: center;
  padding: 16px 20px;
  background: #525252;
  border-bottom: 1px solid #000000;
}

.site-title { font-weight: 700; letter-spacing: .4px; }

/* ---------- NAV (index) ----------
   - Blue buttons by default
   - Hover turns orange
   - You can add aria-current="page" to any link later if desired */
.main-nav { display: flex; gap: 12px; }
.main-nav a {
  text-decoration: none;
  color: #fff;
  background: #0b3d91;                  /* blue */
  padding: 8px 14px;
  border-radius: 6px;
  font-weight: 600;
  transition: background-color .2s ease, color .2s ease;
}
/* Hover behavior (index): blue → orange */
.main-nav a:hover {
  background: #ffbf00;                  /* orange on hover */
  color: #111;
}


/* ===========================================================
   MAIN LAYOUT: TWO COLUMNS (ASIDE | TARGET)
   -----------------------------------------------------------
   - Left column fixed 300px
   - Right column fills remaining space
   - Enough height to split both columns into 3 equal rows
   =========================================================== */
.home-grid {
  display: grid;
  grid-template-columns: 300px 1fr;     /* ASIDE (fixed) | TARGET (fluid) */
  gap: 20px;
  padding: 20px;
  min-height: 600px;                    /* ~200px per row after gaps/padding */
  background: #393939;
}

/* Make each column a 3-row grid so rows align perfectly */
.home-grid .aside,
.home-grid .target {
  display: grid;
  grid-template-rows: repeat(3, 1fr);   /* three equal-height rows */
  gap: 15px;
  border: 1px solid #000000;            /* visualize columns while learning */
  padding: 10px;
  background: #525252;
}

/* ===========================================================
   LEFT COLUMN: TEXT BOXES
   =========================================================== */
.side-box {
  background: #95bdf7;
  border: 1px solid #000000;
  padding: 12px;
  display: grid;
  align-content: center;  /* vertical centering for text */
  line-height: 1.4; /* better readability */
  font-size: 14px;        /* controls text size */

}

/* ===========================================================
   RIGHT COLUMN: IMAGE BOXES (FULL-BOX LINKS)
   -----------------------------------------------------------
   - Each .target-box is clickable (link fills the box)
   - Boxes have a fixed height (do NOT grow)
   - Images fit inside without stretching the box
   =========================================================== */
.target-box {
  border: 1px solid #000000;
  background: #eaeaea;
  display: grid;
  place-items: center;                  /* center small images if needed */
  overflow: hidden;                     /* hide any stray edges */
  height: 200px;                        /* fixed height per row */
}

/* Link fills the entire box, making the whole box clickable */
.target-box a {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
}

/* Images stay within the box; do not force the box to grow */
.target-box a img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;                   /* keep entire image visible, no cropping */
  display: block;                        /* remove inline gap under images */
  border: 1px solid #cfcfcf;             /* subtle inner border */
}

/* ===========================================================
   FOOTER (simple demo)
   =========================================================== */
.site-footer {
  padding: 16px 20px;
  background: #000000;
  border-top: 1px solid #000000;
  text-align: right;
  color: #525252;                       /* light gray text */
}

/* ===========================================================
   OPTIONAL: VISUAL OUTLINES (learning aid)
   - Toggle this on/off as you learn.
   =========================================================== */
/*
.site-header, .home-grid, .aside, .target, .site-footer {
  outline: 1px dashed #d3d3d3;
}
*/