/*
 * Lone Bee: every style of the site. Values come from tokens.css only (see design/README.md);
 * tests/css.node.spec.js fails on a raw color anywhere, or a raw length outside a media query.
 *
 * Breakpoints: 480px (card titles grow), 600px (wider gutter), 720px (hero title grows),
 * 900px (two columns of cards), 1100px (the hero copy moves onto the art).
 */

/* Base */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--text);
  font: var(--type-body);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  background: var(--bg);
}

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

img,
canvas {
  display: block;
  max-width: 100%;
}

a {
  color: var(--link);
  text-decoration-line: underline;
  text-decoration-thickness: var(--pixel);
  text-underline-offset: var(--space-1);
}

a:hover {
  color: var(--link-hover);
}

:focus-visible {
  outline: var(--focus-width) solid var(--focus);
  outline-offset: var(--focus-offset);
}

.pixelated {
  image-rendering: pixelated;
}

/* Layout */

.wrap {
  width: 100%;
  max-width: calc(var(--content-max) + 2 * var(--gutter));
  margin-inline: auto;
  padding-inline: var(--gutter-narrow);
}

@media (min-width: 600px) {
  .wrap {
    padding-inline: var(--gutter);
  }
}

/* Skip link: off screen until focused. */

.skip-link {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  z-index: var(--layer-skip);
  padding: var(--space-3) var(--space-6);
  background: var(--accent);
  color: var(--on-accent);
  font: var(--type-label);
  text-decoration: none;
  box-shadow: var(--shadow-button-pressed);
  transform: translateY(calc(-100% - var(--space-12)));
}

.skip-link:focus {
  transform: none;
}

.skip-link:hover {
  color: var(--on-accent);
}

/* Header: on the home page, a bar of the same night as the top of the hero art, so the sky runs
   on behind the logo; elsewhere, the page background. */

.site-header {
  position: relative;
  z-index: var(--layer-content);
}

.page-home .site-header {
  background: var(--sky-top);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}

.brand {
  display: block;
  flex: none;
}

.brand img {
  image-rendering: pixelated;
}

.site-nav ul {
  display: flex;
  gap: var(--space-2);
}

.site-nav a {
  display: block;
  min-height: var(--tap-min);
  padding: var(--space-2) var(--space-3);
  color: var(--text);
  font: var(--type-label);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--accent);
  text-decoration-line: underline;
}

/* Buttons: a fill grown by a notched one-pixel frame, over a notched hard drop. Pressed, a
   button travels onto its own drop. */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6);
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  padding: var(--space-3) var(--space-6);
  background: var(--surface);
  color: var(--text);
  font: var(--type-label);
  text-decoration: none;
  box-shadow: var(--shadow-button-secondary);
}

.button:hover {
  background: var(--surface-hover);
  color: var(--text);
  box-shadow: var(--shadow-button-secondary-hover);
}

.button:active {
  transform: translate(var(--drop), var(--drop));
  box-shadow: var(--shadow-button-secondary-pressed);
}

.button:focus-visible {
  outline-offset: var(--focus-offset-button);
}

.button-primary {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: var(--shadow-button);
}

.button-primary:hover {
  background: var(--accent-hover);
  color: var(--on-accent);
  box-shadow: var(--shadow-button-hover);
}

.button-primary:active {
  box-shadow: var(--shadow-button-pressed);
}

/* Disabled: still focusable (aria-disabled), so it keeps its focus ring; no drop, no hover. */
.button[aria-disabled="true"],
.button[aria-disabled="true"]:hover,
.button[aria-disabled="true"]:active {
  background: var(--surface);
  color: var(--text-faint);
  box-shadow: var(--shadow-frame);
  transform: none;
  cursor: not-allowed;
}

/* Hero: the art, then the copy. From 1100px wide, the copy sits on the art's calm left sky. */

.hero {
  position: relative;
}

.hero-art {
  position: relative;
  z-index: var(--layer-art);
  height: clamp(var(--hero-min), var(--hero-fluid), var(--hero-max));
  overflow: hidden;
  background: var(--hero-sky);
}

.hero-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 80% 50%;
  image-rendering: pixelated;
}

/* hero.js sizes both layers in whole device pixels per art pixel. */
.hero-art.is-snapped img,
.hero-art canvas {
  position: absolute;
  top: 0;
  left: 0;
  max-width: none;
  object-fit: fill;
  image-rendering: pixelated;
}

.hero-art canvas[hidden] {
  display: none;
}

.hero-copy {
  position: relative;
  z-index: var(--layer-content);
  padding-block: var(--space-8);
}

.hero-title {
  color: var(--text);
  font: var(--type-display-l);
  text-shadow: var(--shadow-title-small);
}

.hero-tagline {
  max-width: var(--measure);
  margin-top: var(--space-4);
  color: var(--text);
  font: var(--type-lead);
}

.hero .actions {
  margin-top: var(--space-8);
}

@media (min-width: 720px) {
  .hero-title {
    font: var(--type-display-xl);
    text-shadow: var(--shadow-title);
  }
}

@media (min-width: 1100px) {
  .hero {
    height: clamp(var(--hero-wide-min), var(--hero-wide-fluid), var(--hero-max));
  }

  .hero-art {
    position: absolute;
    inset: 0;
    height: auto;
  }

  .hero-copy {
    padding-block: var(--space-12);
  }

  /* On the art's sky, a secondary button needs a light frame to stand out. */
  .hero .button:not(.button-primary) {
    background: var(--surface);
    box-shadow: var(--shadow-button-secondary-hover);
  }

  .hero .button:not(.button-primary):hover {
    background: var(--surface-hover);
  }

  .hero .button:not(.button-primary):active {
    box-shadow: var(--shadow-button-secondary-pressed);
  }
}

/* Sections */

.section {
  padding-top: var(--space-16);
}

@media (min-width: 720px) {
  .section {
    padding-top: var(--space-24);
  }
}

/* The hero art ends in a band of dark meadow, which already parts it from the first section. */
@media (min-width: 1100px) {
  .hero + .section {
    padding-top: var(--space-12);
  }
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  color: var(--text);
  font: var(--type-display-l);
  text-shadow: var(--shadow-title-small);
}

.section-title img {
  flex: none;
  image-rendering: pixelated;
}

.section-lead {
  max-width: var(--measure);
  margin-top: var(--space-4);
  color: var(--text-muted);
  font: var(--type-lead);
}

.section-note {
  max-width: var(--measure);
  margin-top: var(--space-8);
  color: var(--text-muted);
}

/* Cards: a surface in a notched frame. Games in the works get a dotted frame instead. */

.cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-8);
}

@media (min-width: 900px) {
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.cards > li {
  display: flex;
}

.card {
  display: flex;
  flex: 1;
  flex-direction: column;
  min-width: 0;
  background: var(--surface);
  box-shadow: var(--shadow-frame);
}

.card-image {
  width: 100%;
  height: auto;
  aspect-ratio: 40 / 21;
  object-fit: cover;
  background: var(--sunken);
}

.card-next .card-image {
  image-rendering: pixelated;
}

.card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-4);
}

@media (min-width: 480px) {
  .card-body {
    padding: var(--space-6);
  }
}

.card-title {
  color: var(--text);
  font: var(--type-display-m);
}

@media (min-width: 480px) {
  .card-title {
    font: var(--type-display-l);
  }
}

/* Inline padding grows the tap target to tap-min without moving anything around it. */
.card-title a {
  padding-block: var(--space-2);
  color: inherit;
  text-decoration: none;
}

.card-title a:hover {
  color: var(--accent);
}

.card-text {
  color: var(--text-muted);
}

.card .actions {
  margin-top: auto;
  padding-top: var(--space-2);
}

.card-next {
  position: relative;
  box-shadow: none;
}

/* Dots of one UI pixel, two pixels apart, drawn with hard stops: no curve, no blur. */
.card-next::before {
  position: absolute;
  inset: calc(-1 * var(--pixel));
  content: "";
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, var(--border-strong) 0 var(--pixel), transparent var(--pixel) var(--drop)) top / 100% var(--pixel) no-repeat,
    repeating-linear-gradient(90deg, var(--border-strong) 0 var(--pixel), transparent var(--pixel) var(--drop)) bottom / 100% var(--pixel) no-repeat,
    repeating-linear-gradient(180deg, var(--border-strong) 0 var(--pixel), transparent var(--pixel) var(--drop)) left / var(--pixel) 100% no-repeat,
    repeating-linear-gradient(180deg, var(--border-strong) 0 var(--pixel), transparent var(--pixel) var(--drop)) right / var(--pixel) 100% no-repeat;
}

/* Platform tags: comb cells, stretched, with stepped ends. */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.tags li {
  padding: var(--space-1) var(--space-4);
  background: var(--surface-hover);
  color: var(--text);
  font: var(--type-tag);
  clip-path: polygon(
    var(--drop) 0,
    calc(100% - var(--drop)) 0,
    calc(100% - var(--pixel)) var(--drop),
    100% var(--drop),
    100% calc(100% - var(--drop)),
    calc(100% - var(--pixel)) calc(100% - var(--drop)),
    calc(100% - var(--drop)) 100%,
    var(--drop) 100%,
    var(--pixel) calc(100% - var(--drop)),
    0 calc(100% - var(--drop)),
    0 var(--drop),
    var(--pixel) var(--drop)
  );
}

/* Follow */

.follow .actions {
  margin-top: var(--space-6);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-6);
  margin-top: var(--space-6);
}

.links a {
  display: inline-block;
  min-height: var(--tap-min);
  padding-block: var(--space-2);
  font: var(--type-label);
}

/* Footer */

.site-footer {
  margin-top: var(--space-16);
  padding-block: var(--space-8);
  background: var(--sunken);
  color: var(--text-muted);
  font: var(--type-small);
}

.footer-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4) var(--space-6);
}

@media (min-width: 720px) {
  .site-footer {
    margin-top: var(--space-24);
  }
}

.footer-bar img {
  image-rendering: pixelated;
}

/* 404 */

.lost-body {
  display: grid;
  justify-items: start;
  gap: var(--space-6);
  padding-block: var(--space-16) var(--space-24);
}

.lost-art {
  height: auto;
  image-rendering: pixelated;
}

.lost-title {
  color: var(--text);
  font: var(--type-display-l);
  text-shadow: var(--shadow-title-small);
}

/* Windows high contrast: the pixel frames are shadows, which this mode removes. Real borders
   take their place. */

@media (forced-colors: active) {
  .button,
  .card,
  .skip-link {
    border: var(--pixel) solid ButtonText;
  }

  .card-next {
    border-style: dashed;
  }

  .card-next::before {
    display: none;
  }

  .tags li {
    clip-path: none;
    border: var(--pixel) solid CanvasText;
  }

  /* The logos are images in their own colors: keep their night ground under any theme. */
  .brand,
  .footer-bar img {
    forced-color-adjust: none;
    background: var(--sky-top);
  }
}

/* A light contrast theme would draw focus rings dark on the art's dark sky: in this mode the copy
   leaves the art and follows it, as on narrow screens. */
@media (forced-colors: active) and (min-width: 1100px) {
  .hero {
    height: auto;
  }

  .hero-art {
    position: relative;
    inset: auto;
    height: clamp(var(--hero-wide-min), var(--hero-wide-fluid), var(--hero-max));
  }
}