/* Shared styles for the Learn page layout explorations.
   Everything leans on kirupa.css variables so each option follows the
   reader's chosen style (pixel, sci-fi, minimal...) and light/dark mode. */

.lxBody {
  --lxShadow: var(--primaryDarker);
  --lxPanel: var(--lighter);
  /* Match the tutorial column: 760px, narrowing to 700px at 1200px like #mainContent */
  --lxWide: 760px;
  width: 100%;
  margin: 0 auto 40px;
  position: relative;
  z-index: 1;
}

@media (max-width: 1200px) {
  .lxBody { --lxWide: 700px; }
}

.lx {
  box-sizing: border-box;
  width: min(var(--lxWide), calc(100% - 40px));
  margin: 0 auto;
  color: var(--bodyText);
}

.lx a { text-decoration: none; }

.lx h2,
.lx h3,
.lx h4 {
  border: 0;
  padding: 0;
  text-shadow: none;
}

.lxPixel {
  font-family: kirupaPixel;
  font-weight: 100;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: none;
}

.lxMono {
  font-family: kirupaCode, monospace;
  -webkit-font-smoothing: none;
}

.lxIcon {
  width: 32px;
  height: 32px;
  image-rendering: pixelated;
  flex: none;
}

/* Exploration switcher */
.lxSwitcher {
  box-sizing: border-box;
  width: min(var(--lxWide), calc(100% - 40px));
  margin: 120px auto 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 10px 14px;
  border: 2px dashed var(--darkStructureBorder);
  background: var(--lxPanel);
  font-family: kirupaCode, monospace;
  font-size: 13px;
  -webkit-font-smoothing: none;
  color: var(--darkTextSecondary);
}

.lxSwitcher strong {
  font-family: kirupaPixel;
  font-weight: 100;
  font-size: 18px;
  color: var(--headerText);
}

.lxSwitcher .lxSwitcherSpacer { display: none; }
.lxSwitcher select { flex: 1 1 160px; min-width: 0; }

.lxSwitcher a,
.lxSwitcher select {
  color: var(--darkText);
  border: 2px solid var(--darkStructureBorder);
  background: var(--pageBackground);
  padding: 5px 10px;
  font: inherit;
  cursor: pointer;
}

.lxSwitcher a:hover,
.lxSwitcher select:hover { border-color: var(--primary); color: var(--primary); }

/* Page intro */
.lxIntro { margin-bottom: 34px; }
.lxIntro h1 { margin: 0 0 14px; }
.lxIntro p { font-size: 1.2em; line-height: 1.7; max-width: 760px; margin: 0; }

/* Pixel button */
.lxButton {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px 10px;
  border: 0;
  background: var(--primary);
  color: var(--textOnPrimary) !important;
  font-family: kirupaPixel;
  font-size: 20px;
  -webkit-font-smoothing: none;
  box-shadow: 4px 4px 0 var(--lxShadow);
  cursor: pointer;
  transition: transform .08s ease-out, box-shadow .08s ease-out;
}

.lxButton:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--lxShadow); }
.lxButton:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--lxShadow); }

.lxButton.ghost {
  background: transparent;
  color: var(--darkText) !important;
  border: 2px solid var(--darkStructureBorder);
  box-shadow: none;
}

/* Category chip */
.lxChip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px 6px 10px;
  border: 2px solid var(--structureBorder);
  background: var(--pageBackground);
  color: var(--darkText);
  font-family: kirupaPixel;
  font-size: 18px;
  -webkit-font-smoothing: none;
  white-space: nowrap;
  cursor: pointer;
}

.lxChip img { width: 22px; height: 22px; image-rendering: pixelated; }
.lxChip:hover { border-color: var(--primary); }
.lxChip[aria-pressed="true"],
.lxChip[aria-selected="true"] {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--textOnPrimary);
  box-shadow: 3px 3px 0 var(--lxShadow);
}

/* Search box */
.lxSearch {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border: 3px solid var(--darkStructureBorder);
  background: var(--inputBackground);
  box-shadow: 5px 5px 0 var(--structureBorder);
}

.lxSearch:focus-within { border-color: var(--primary); box-shadow: 5px 5px 0 var(--lxShadow); }
.lxSearch img { width: 26px; height: 26px; image-rendering: pixelated; }

.lxSearch input {
  flex: 1;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--bodyText);
  font: 1.15em var(--serifFonts);
  padding: 15px 0;
}

.lxSearch kbd {
  font-family: kirupaCode, monospace;
  font-size: 12px;
  border: 1px solid var(--darkStructureBorder);
  padding: 2px 6px;
  color: var(--darkTextSecondary);
}

/* Article link row */
.lxArticle {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px dotted var(--structureBorder);
  color: var(--darkText);
  line-height: 1.35;
}

.lxArticle:hover { background: var(--primaryLightest); border-color: var(--primary); }
.lxArticle img { width: 26px; height: 26px; image-rendering: pixelated; flex: none; }

.lxCount {
  font-family: kirupaCode, monospace;
  font-size: 12px;
  color: var(--darkTextSecondary);
  -webkit-font-smoothing: none;
}

.lxEmpty {
  padding: 40px 0;
  text-align: center;
  font-family: kirupaPixel;
  font-size: 24px;
  color: var(--darkTextSecondary);
}

/* Hub page */
.lxHubGrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 22px;
}

.lxHubCard {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  border: 2px solid var(--structureBorder);
  background: var(--pageBackground);
  color: var(--darkText);
  transition: transform .1s ease-out, box-shadow .1s ease-out, border-color .1s;
}

.lxHubCard:hover {
  transform: translate(-3px, -3px);
  border-color: var(--primary);
  box-shadow: 6px 6px 0 var(--lxShadow);
}

.lxHubCard .lxHubNumber { font-family: kirupaCode, monospace; font-size: 13px; color: var(--primary); }
.lxHubCard h2 { margin: 0; font-size: 1.8em; line-height: 1; }
.lxHubCard p { margin: 0; line-height: 1.55; color: var(--bodyText); }
.lxHubCard img { width: 48px; height: 48px; image-rendering: pixelated; }

@media (max-width: 700px) {
  .lxSwitcher { margin-top: 90px; }
  .lxIntro p { font-size: 1.05em; }
}

@media (prefers-reduced-motion: reduce) {
  .lx *, .lx *::before, .lx *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}