@charset 'UTF-8';

/**
* common
**/
body {
  margin: 0;
  color: white;
  font-family: sans-serif;
}
/**
* components
**/
@property --zoom-factor {
  syntax: "<length>";
  inherits: false;
  initial-value: 0;
}

.zoom-wrapper {
  --_min-viewport-width: 640px; /* viewportの最小値を下回ったら縮小をやめる */
  --_max-viewport-width: 1280px; /* viewportの最大値を上回ったら拡大をやめる */
  --_zoom-value: clamp(
    tan(atan2(var(--_min-viewport-width), var(--_max-viewport-width))),
    tan(atan2(var(--zoom-factor), var(--_max-viewport-width))),
    1
  );
  --zoom-factor: clamp(
    var(--_min-viewport-width),
    100dvi,
    var(--_max-viewport-width)
  );

  zoom: var(--_zoom-value);
  -webkit-text-size-adjust: initial; /* iOS Safariのバグを修正 */
}

.viewport-display {
  margin-block-end: 1em;
  color: oklch(from red calc(l - 0.1) c h);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  text-wrap: balance;

  &::after {
    --zoom-factor: 100dvi;
    --_current-vw-to-px: calc(tan(atan2(var(--zoom-factor), 1px)));
    content: counter(v) "px";
    counter-reset: v var(--_current-vw-to-px);
  }
}

table {
  --_border-color: #ddd;
  --_background-head: #6a6a6a;
  --_background-body: #fcfcfc;
  --_background-prompt: #0089ba;
  --_foreground-head: #fcfcfc;
  --_foreground-body: #6a6a6a;
  --_foreground-prompt: #fcfcfc;

  position: relative;
  container-type: scroll-state;
  display: block flow;
  overflow: auto;
  overscroll-behavior-inline: contain;
  max-inline-size: 100%;

  &::after {
    position: absolute;
    inset-block: 0;
    inset-inline-end: 16px;
    display: block grid;
    place-items: center;
    inline-size: 2.5rem;
    aspect-ratio: 1;
    margin-block: auto;
    border-radius: calc(1px / 0);
    box-shadow: 0 0 10px oklch(from var(--_background-prompt) l c h / 30%);
    background-color: var(--_background-prompt);
    color: var(--_foreground-prompt);
    transition-duration: 0.3s;
    transition-property: opacity, visibility;
  }

  @supports (container-type: scroll-state) {
    &::after {
      content: "→";
    }
  }

  @container scroll-state((scrollable: inline-start) or (not (scrollable: inline-end))) {
    &::after {
      visibility: hidden;
      opacity: 0;
    }
  }

  & :where(th, td) {
    padding-block: 1em;
    padding-inline: 2em;
    border: 1px solid var(--_border-color);
    text-align: center;
    text-wrap: nowrap;

    &:is(thead *) {
      background-color: var(--_background-head);
      color: var(--_foreground-head);
    }

    &:is(tbody *) {
      background-color: var(--_background-body);
      color: var(--_foreground-body);
    }
  }
}

:root {
  --color-light: #fcfcfc;
  --color-dark: #333;
  --_background: #fcfcfc;
  --_grid-color: #efefef;

  background-image: linear-gradient(var(--_grid-color) 2px, transparent 2px),
    linear-gradient(90deg, var(--_grid-color) 2px, transparent 2px),
    linear-gradient(var(--_grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--_grid-color) 1px, var(--_background) 1px);
  background-position: -2px -2px, -2px -2px, -1px -1px, -1px -1px;
  background-size: 50px 50px, 50px 50px, 10px 10px, 10px 10px;
  color: var(--color-dark);
  font-family: Montserrat, sans-serif;
  line-height: 1.618;
}

body {
  display: block grid;
  row-gap: 40px;
  align-content: center;
  justify-items: center;
  padding: 20px;

  & > * {
    inline-size: min(800px, 100%);
  }
}