/*
 * rePIU project site (Task 756; Exceed arcade layer, Task 764).
 * Black screen, VGA 16-colour palette, Galmuri pixel fonts, with a
 * Pump It Up Exceed-era neon layer on top: surface colours stay within
 * VGA 16, and the arcade glow lives only in alpha shadows and gradients.
 * Pixel fonts are only crisp at whole multiples of their design size:
 * Galmuri14 at 15px, Galmuri11 / GalmuriMono11 at multiples of 12px.
 */

@font-face {
  font-family: "Galmuri14";
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/Galmuri14.woff2") format("woff2");
}

@font-face {
  font-family: "Galmuri11";
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/Galmuri11-Bold.woff2") format("woff2");
}

@font-face {
  font-family: "GalmuriMono11";
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/GalmuriMono11.woff2") format("woff2");
}

:root {
  color-scheme: dark;

  /* VGA text-mode palette */
  --black: #000000;
  --blue: #0000aa;
  --green: #00aa00;
  --cyan: #00aaaa;
  --red: #aa0000;
  --magenta: #aa00aa;
  --brown: #aa5500;
  --gray: #aaaaaa;
  --dark-gray: #555555;
  --light-blue: #5555ff;
  --light-green: #55ff55;
  --light-cyan: #55ffff;
  --light-red: #ff5555;
  --light-magenta: #ff55ff;
  --yellow: #ffff55;
  --white: #ffffff;

  /* Exceed neon accents: VGA surfaces, alpha-only glow. */
  --neon-pink: var(--light-magenta);
  --neon-cyan: var(--light-cyan);
  --neon-yellow: var(--yellow);
  --glow-pink: rgba(255, 85, 255, 0.45);
  --glow-cyan: rgba(85, 255, 255, 0.35);
  --glow-yellow: rgba(255, 255, 85, 0.4);
  --glow-blue: rgba(85, 85, 255, 0.45);

  --text: var(--gray);
  --strong: var(--white);
  --heading: var(--light-cyan);
  --link: var(--yellow);
  --rule: var(--dark-gray);
  --bar-bg: var(--gray);
  --bar-fg: var(--black);

  --font-body: "Galmuri14", "Malgun Gothic", "Apple SD Gothic Neo", sans-serif;
  --font-head: "Galmuri11", "Galmuri14", "Malgun Gothic", sans-serif;
  --font-mono: "GalmuriMono11", "Consolas", "D2Coding", monospace;

  --measure: 60rem;
  --gutter: 16px;
}

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

html {
  background: var(--black);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--black);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 24px;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: grayscale;
  overflow-wrap: break-word;
}

::selection {
  background: var(--magenta);
  color: var(--white);
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 2px solid var(--light-cyan);
  outline-offset: 2px;
}

strong,
b {
  /* Galmuri14 has no bold; emphasis is colour, as in text mode. */
  font-weight: 400;
  color: var(--strong);
}

em {
  font-style: normal;
  color: var(--light-green);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--heading);
  margin: 48px 0 12px;
  line-height: 1.25;
}

h1 {
  font-size: 36px;
  color: var(--white);
}

h2 {
  font-size: 24px;
}

h3 {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 15px;
  color: var(--light-green);
  margin-top: 36px;
}

h3::before {
  content: "\25A0  ";
  color: var(--magenta);
}

h4,
h5,
h6 {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 15px;
  color: var(--white);
  margin-top: 24px;
}

p,
ul,
ol,
dl,
blockquote,
pre,
table,
details {
  margin: 0 0 16px;
}

ul,
ol {
  padding-left: 3ch;
}

li + li {
  margin-top: 4px;
}

ul > li::marker {
  content: "\2022  ";
  color: var(--dark-gray);
}

hr {
  border: 0;
  border-top: 1px dashed var(--rule);
  margin: 32px 0;
}

code,
kbd,
samp,
pre {
  font-family: var(--font-mono);
  font-size: 12px;
}

code {
  /* Inline code reads at body size; blocks keep the 12px monospace grid. */
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--light-green);
}

a code {
  color: inherit;
}

pre {
  padding: 12px 16px;
  border: 1px solid var(--rule);
  overflow-x: auto;
  line-height: 18px;
  color: var(--gray);
}

pre code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: inherit;
}

blockquote {
  margin-left: 0;
  padding: 4px 0 4px 16px;
  border-left: 4px solid var(--dark-gray);
}

.table-wrap {
  overflow-x: auto;
  margin: 0 0 16px;
}

table {
  border-collapse: collapse;
  min-width: 100%;
  margin: 0;
}

th,
td {
  border: 1px solid var(--rule);
  padding: 4px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--light-cyan);
  font-weight: 400;
  white-space: nowrap;
}

img,
svg {
  max-width: 100%;
  height: auto;
}

/* --- Layout -------------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: var(--gutter);
  top: 8px;
  z-index: 10;
  background: var(--yellow);
  color: var(--black);
  padding: 4px 8px;
}

.wrap {
  width: 100%;
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

main {
  flex: 1 0 auto;
  padding-bottom: 48px;
}

/* --- Menu bar (EDIT.COM style) ------------------------------------------ */

.menubar {
  background: var(--bar-bg);
  color: var(--bar-fg);
  font-family: var(--font-body);
}

.menubar .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 16px;
  min-height: 32px;
}

.menubar a {
  color: var(--bar-fg);
}

.menubar a:hover {
  text-decoration: none;
  background: var(--black);
  color: var(--gray);
}

/* Beat bar: the groove-meter strip under the menu bar. */
.beatbar {
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--neon-pink),
    var(--neon-yellow) 50%,
    var(--neon-cyan)
  );
  box-shadow: 0 0 8px var(--glow-pink), 0 2px 10px var(--glow-cyan);
}

.brand {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 1px;
  padding: 4px 8px;
  margin-left: -8px;
}

.menu {
  display: flex;
  flex-wrap: wrap;
  flex: 1 1 auto;
  margin: 0;
  padding: 0;
  list-style: none;
}

.menu li + li {
  margin: 0;
}

.menu li::marker {
  content: none;
}

.menu a {
  display: block;
  padding: 4px 8px;
}

.menu a[aria-current="page"] {
  background: var(--black);
  color: var(--white);
}

.menu kbd {
  font-family: var(--font-mono);
  color: var(--red);
  margin-right: 4px;
}

.menu a[aria-current="page"] kbd,
.menu a:hover kbd {
  color: var(--light-red);
}

.lang {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
}

.lang a,
.lang span {
  padding: 4px 6px;
}

.lang [aria-current="true"] {
  background: var(--blue);
  color: var(--white);
}

/* --- Status bar ---------------------------------------------------------- */

.statusbar {
  background: var(--bar-bg);
  color: var(--bar-fg);
  font-size: 15px;
}

.statusbar .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 24px;
  padding-top: 4px;
  padding-bottom: 4px;
}

.statusbar a {
  color: var(--blue);
}

/* --- Boxes (double-line dialog frames) ---------------------------------- */

.box {
  position: relative;
  border: 4px double var(--light-cyan);
  padding: 24px 20px 8px;
  margin: 48px 0 0;
  box-shadow: 0 0 10px rgba(85, 255, 255, 0.18);
}

.box > h2:first-child {
  position: absolute;
  top: -14px;
  left: 12px;
  margin: 0;
  padding: 0 8px;
  background: var(--black);
  font-size: 24px;
  line-height: 24px;
}

.box--plain {
  border-color: var(--dark-gray);
  box-shadow: none;
}

.box--plain > h2:first-child {
  color: var(--gray);
}

.box--warn {
  border-color: var(--yellow);
  box-shadow: 0 0 10px rgba(255, 255, 85, 0.18);
}

.box--warn > h2:first-child {
  color: var(--yellow);
}

/* --- Hero ---------------------------------------------------------------- */

.hero {
  padding-top: 48px;
}

.prompt {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
  margin: 0 0 12px;
}

.prompt .path {
  color: var(--light-cyan);
}

.cursor {
  display: inline-block;
  width: 1ch;
  height: 2px;
  margin-left: 2px;
  background: var(--gray);
  vertical-align: baseline;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cursor {
    animation: none;
  }
}

.hero-title {
  font-size: 48px;
  line-height: 48px;
  margin: 0 0 16px;
  color: var(--white);
  text-shadow: 4px 4px 0 var(--blue), 0 0 24px var(--glow-pink);
}

/* Exceed logo treatment: gradient glyphs; the hard shadow moves to a
 * drop-shadow filter because text-shadow cannot follow clipped text. */
@supports (-webkit-background-clip: text) or (background-clip: text) {
  .hero-title {
    background: linear-gradient(
      180deg,
      var(--white) 0%,
      var(--light-cyan) 40%,
      var(--light-blue) 62%,
      var(--light-magenta) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    text-shadow: none;
    filter: drop-shadow(4px 4px 0 var(--blue)) drop-shadow(0 0 12px var(--glow-pink));
  }
}

/* --- Pad arrows (the five Pump It Up panels) ----------------------------- */

.padline {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 16px;
}

.padline svg {
  width: 24px;
  height: 24px;
}

.pad--up {
  fill: var(--neon-pink);
  filter: drop-shadow(0 0 6px var(--glow-pink));
}

.pad--down {
  fill: var(--neon-cyan);
  filter: drop-shadow(0 0 6px var(--glow-cyan));
}

.pad--center {
  fill: var(--neon-yellow);
  filter: drop-shadow(0 0 6px var(--glow-yellow));
  animation: pad-pulse 2s ease-in-out infinite;
}

@keyframes pad-pulse {
  50% {
    filter: drop-shadow(0 0 2px var(--glow-yellow));
  }
}

@media (prefers-reduced-motion: reduce) {
  .pad--center {
    animation: none;
  }
}

.tagline {
  font-size: 15px;
  color: var(--light-cyan);
  margin-bottom: 16px;
}

.lead {
  max-width: 48rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 20px;
  margin: 24px 0 8px;
}

.btn {
  display: inline-block;
  padding: 4px 16px;
  background: linear-gradient(180deg, var(--light-cyan), var(--cyan));
  color: var(--black);
  box-shadow: 6px 6px 0 var(--dark-gray), 0 0 12px var(--glow-cyan);
}

.btn:hover {
  background: var(--light-cyan);
  text-decoration: none;
  box-shadow: 6px 6px 0 var(--dark-gray), 0 0 16px var(--glow-pink);
}

.btn:active {
  transform: translate(6px, 6px);
  box-shadow: 0 0 12px var(--glow-cyan);
}

.btn--secondary {
  background: linear-gradient(180deg, var(--white), var(--gray));
  box-shadow: 6px 6px 0 var(--dark-gray);
}

.btn--secondary:hover {
  background: var(--white);
}

.btn small {
  font-size: 15px;
  color: var(--blue);
}

.meta {
  color: var(--dark-gray);
}

.meta strong {
  color: var(--gray);
}

.notice {
  color: var(--yellow);
}

.notice::before {
  content: "! ";
  color: var(--light-red);
}

/* --- Badges -------------------------------------------------------------- */

.badge {
  display: inline-block;
  padding: 0 6px;
  color: var(--black);
  background: var(--gray);
  white-space: nowrap;
}

.badge--release {
  background: var(--light-green);
}

.badge--wip {
  background: var(--yellow);
}

.badge--hold {
  background: var(--dark-gray);
  color: var(--gray);
}

.badge--latest {
  background: var(--light-magenta);
  box-shadow: 0 0 8px var(--glow-pink);
}

/* --- Lists and cards ----------------------------------------------------- */

.plain-list {
  list-style: none;
  padding: 0;
}

.plain-list > li::marker {
  content: none;
}

.platforms li {
  display: grid;
  grid-template-columns: 9ch 1fr;
  gap: 0 12px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--rule);
}

.platforms li:last-child {
  border-bottom: 0;
}

.platforms .badge {
  justify-self: start;
  align-self: start;
}

.platforms strong {
  display: block;
}

.credits li {
  display: grid;
  grid-template-columns: 13ch 1fr;
  gap: 0 12px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--rule);
}

.credits li:last-child {
  border-bottom: 0;
}

.credits .badge {
  justify-self: start;
  align-self: start;
}

.diagram {
  font-size: 24px;
  line-height: 28px;
  color: var(--light-cyan);
  border: 0;
  padding: 0;
  margin: 16px 0 24px;
}

.diagram .hl {
  color: var(--yellow);
}

.diagram .dim {
  color: var(--dark-gray);
}

.targets td:first-child,
.targets td:last-child {
  color: var(--light-green);
  white-space: nowrap;
}

.targets td:last-child {
  color: var(--dark-gray);
}

.posts li {
  padding: 16px 0;
  border-bottom: 1px dashed var(--rule);
}

.posts li:last-child {
  border-bottom: 0;
}

.posts h3 {
  margin: 4px 0 8px;
  font-size: 15px;
}

.posts h3::before {
  content: none;
}

.posts h3 a {
  color: var(--white);
}

.posts p {
  margin-bottom: 4px;
}

.date {
  color: var(--dark-gray);
}

/* --- Release timeline ---------------------------------------------------- */

.timeline {
  list-style: none;
  padding: 0 0 0 20px;
  border-left: 2px solid var(--dark-gray);
  margin-left: 4px;
}

.timeline > li {
  position: relative;
  padding: 0 0 24px;
}

.timeline > li::marker {
  content: none;
}

.timeline > li::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--dark-gray);
}

.timeline > li.is-latest::before {
  background: var(--light-magenta);
  box-shadow: 0 0 8px var(--glow-pink);
}

.timeline h3 {
  margin: 0 0 4px;
  color: var(--white);
}

.timeline h3::before {
  content: none;
}

.timeline h3 a {
  color: var(--white);
}

summary {
  cursor: pointer;
  color: var(--light-cyan);
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::before {
  content: "[+] ";
  font-family: var(--font-mono);
  font-size: 12px;
}

details[open] > summary::before {
  content: "[-] ";
}

details[open] > summary {
  margin-bottom: 8px;
}

.notes {
  border-left: 1px dashed var(--rule);
  padding-left: 16px;
}

.notes h3 {
  margin-top: 24px;
}

/* --- Download ------------------------------------------------------------ */

.release-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 16px;
  margin-bottom: 16px;
}

.release-head .version {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 24px;
  color: var(--white);
}

.assets li {
  padding: 12px 0;
  border-bottom: 1px dashed var(--rule);
}

.assets li:last-child {
  border-bottom: 0;
}

.asset-meta {
  display: block;
  margin-top: 8px;
  color: var(--dark-gray);
}

.hash {
  font-family: var(--font-mono);
  font-size: 12px;
  word-break: break-all;
  color: var(--dark-gray);
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.steps li {
  counter-increment: step;
  position: relative;
  padding-left: 5ch;
}

.steps li::marker {
  content: none;
}

.steps li::before {
  content: counter(step) ".";
  position: absolute;
  left: 0;
  color: var(--light-cyan);
}

.releases-table td {
  white-space: nowrap;
}

.releases-table td:last-child {
  white-space: normal;
}

/* --- Post ---------------------------------------------------------------- */

.post-header {
  padding-top: 32px;
}

.post-header h1 {
  margin: 8px 0 12px;
  font-size: 24px;
  line-height: 32px;
}

.post-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: 48px;
  padding-top: 16px;
  border-top: 1px dashed var(--rule);
}

.prose h2 {
  border-bottom: 1px dashed var(--rule);
  padding-bottom: 8px;
}

pre.mermaid {
  border: 1px solid var(--rule);
  text-align: center;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--dark-gray);
  white-space: pre;
}

pre.mermaid[data-processed="true"] {
  color: inherit;
  white-space: normal;
}

/* --- Screenshots (Task 770) ---------------------------------------------- */

.shots {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin: 0 0 8px;
}

.shot {
  margin: 0;
  min-width: 0;
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--cyan);
}

.shot a:hover img,
.shot a:focus-visible img {
  border-color: var(--neon-yellow);
  box-shadow: 0 0 8px var(--glow-yellow);
}

.shot figcaption {
  margin-top: 6px;
  font-size: 12px;
  line-height: 18px;
  color: var(--text);
}

/* --- Small screens ------------------------------------------------------- */

@media (max-width: 600px) {
  h1 {
    font-size: 24px;
  }

  .hero-title {
    font-size: 36px;
    line-height: 36px;
    text-shadow: 3px 3px 0 var(--blue), 0 0 18px var(--glow-pink);
  }

  @supports (-webkit-background-clip: text) or (background-clip: text) {
    .hero-title {
      text-shadow: none;
      filter: drop-shadow(3px 3px 0 var(--blue)) drop-shadow(0 0 10px var(--glow-pink));
    }
  }

  .box {
    padding: 24px 12px 4px;
  }

  .box > h2:first-child {
    left: 8px;
  }

  .menubar .wrap {
    gap: 0 4px;
  }

  .menu a,
  .brand {
    padding: 4px 6px;
  }

  .menu kbd {
    display: none;
  }

  .platforms li,
  .credits li {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .diagram {
    font-size: 12px;
    line-height: 14px;
  }
}