/* Styles for the grid boundary movement article. */
@font-face {
  font-family: "kirupaPixel";
  src: url("https://www.kirupa.com/fonts/born2bsportyv2-webfont.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  color-scheme: light;
  --demo-primary: #0798ff;
  --demo-primary-darker: #0267af;
  --demo-primary-lighter: #aadcff;
  --demo-primary-lightest: #eaf7ff;
  --demo-text: #373d42;
  --demo-page: #ffffff;
  --demo-surface: #ffffff;
  --demo-border: #eeeeee;
  --demo-input-border: #aadcff;
  --line: color-mix(in srgb, var(--demo-input-border) 58%, var(--demo-border));
  --line-strong: color-mix(in srgb, var(--demo-primary-darker) 68%, var(--demo-text));
  --player-cell: var(--demo-primary-lighter);
  --status-background: color-mix(in srgb, var(--demo-primary-lightest) 40%, var(--demo-page));
  --button-shadow: color-mix(in srgb, var(--demo-text) 28%, transparent);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --demo-primary: #518ac1;
    --demo-primary-darker: #3a6fa1;
    --demo-primary-lighter: #aadcff;
    --demo-primary-lightest: #3e4f5f;
    --demo-text: #f5f9fe;
    --demo-page: #383a42;
    --demo-surface: #373b41;
    --demo-border: #504f4f;
    --demo-input-border: #8eb2e8;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: clamp(12px, 4vw, 24px);
  background: var(--demo-page);
  color: var(--demo-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button {
  font: inherit;
}

.demo {
  width: min(100%, 480px);
  margin: 0 auto;
}

h1 {
  margin: 0 0 14px;
  font-family: "kirupaPixel", "Courier New", monospace;
  font-size: clamp(1.45rem, 5vw, 2rem);
  font-weight: 400;
  line-height: 1.15;
  text-align: center;
  -webkit-font-smoothing: none;
}

.grid {
  display: flex;
  flex-direction: column;
  width: min(100%, 480px);
  aspect-ratio: 1;
  margin: 0 auto;
  overflow: hidden;
  border: 2px solid var(--line-strong);
  border-radius: 10px;
  background: var(--demo-surface);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

.grid-row {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  flex: 1 1 0;
  min-height: 0;
}

.grid:focus-visible {
  outline: 4px solid color-mix(in srgb, var(--demo-primary) 42%, transparent);
  outline-offset: 3px;
}

.cell {
  position: relative;
  min-width: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--demo-surface);
}

.cell:nth-child(10) {
  border-right: 0;
}

.grid-row:last-child .cell {
  border-bottom: 0;
}

.cell.player {
  background: var(--player-cell);
}

.cell.player::after {
  position: absolute;
  inset: 14%;
  background: url("https://www.kirupa.com/icon/zorb.svg") center / contain no-repeat;
  content: "";
}

.status {
  display: grid;
  min-height: 48px;
  margin: 12px 0;
  padding: 9px 12px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--status-background);
  color: var(--demo-text);
  line-height: 1.35;
  text-align: center;
}

.status.blocked {
  border-color: var(--demo-primary);
  background: var(--player-cell);
  color: var(--demo-text);
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 16px 24px;
}

.dpad {
  display: grid;
  grid-template-columns: repeat(4, 50px);
  gap: 5px;
}

.move-button,
.reset-button {
  min-width: 50px;
  min-height: 50px;
  border: 1px solid var(--demo-input-border);
  border-radius: 12px;
  background: var(--demo-surface);
  color: var(--demo-text);
  cursor: pointer;
  touch-action: manipulation;
  box-shadow: 0 3px 0 var(--button-shadow);
}

.move-button {
  font-size: 1.4rem;
  font-weight: 800;
}

.move-button:hover,
.reset-button:hover {
  border-color: var(--demo-primary);
  background: var(--player-cell);
}

.move-button:active,
.reset-button:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--button-shadow);
}

.move-button:focus-visible,
.reset-button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--demo-primary) 42%, transparent);
  outline-offset: 2px;
}

.reset-button {
  padding: 0 18px;
  font-weight: 700;
}

@media (max-width: 430px) {
  body {
    padding: 10px;
  }

  .dpad {
    grid-template-columns: repeat(4, 54px);
  }

  .move-button,
  .reset-button {
    min-width: 54px;
    min-height: 54px;
  }
}