@font-face {
  font-family: 'Pixelify Sans';
  src: url('vendor/pixelify-sans.woff2') format('woff2');
  font-weight: 400 700;
  font-display: swap;
}

/* A cold summit with one hot element: FireRed crimson marks the actions that start play. */
:root {
  --snow: #eef3f7;
  --ice: #c8d5e0;
  --slate: #243241;
  --dusk: #5a6c80;
  --bezel: #1a2430;
  --night: #22313f;
  --crimson: #d3202b;
  --crimson-deep: #a3151e;
  --on-dark: #f3f7fa;

  --page: var(--snow);
  --text: var(--slate);
  --muted: var(--dusk);
  --line: var(--ice);

  --font-pixel: 'Pixelify Sans', system-ui, sans-serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;

  --column: 736px; /* the 720px (3x) screen plus its bezel */
  --gutter: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #131c26;
    --text: #dce6ee;
    --muted: #93a6b8;
    --line: #2c3b4b;
  }
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--page);
  color: var(--text);
  font: 16px/1.55 var(--font-body);
}

a { color: inherit; text-underline-offset: 3px; }

[hidden] { display: none !important; }

:focus-visible {
  outline: 3px solid var(--crimson);
  outline-offset: 3px;
}

.app {
  max-width: calc(var(--column) + 2 * var(--gutter));
  margin: 0 auto;
  padding: 40px var(--gutter) 48px;
}

/* Masthead ----------------------------------------------------------------- */

.masthead { margin-bottom: 24px; }

.title {
  margin: 0;
  font: 700 60px/1 var(--font-pixel);
  letter-spacing: -1px;
}

/* Screen ------------------------------------------------------------------- */

.bezel {
  padding: 8px;
  background: var(--bezel);
  border-radius: 14px;
}

.screen {
  position: relative;
  aspect-ratio: 3 / 2;
  width: 100%;
  overflow: hidden;
  border-radius: 6px;
  background: #000;
  container-type: size; /* the title card scales with the screen (cqh units) */
}

/* Nostalgist sets inline sizes on the canvas; the screen box decides the real size. */
.game-canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  image-rendering: pixelated;
}

.card {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  padding: 24px;
  text-align: center;
  color: var(--on-dark);
  background: linear-gradient(180deg, #2b3d50 0%, var(--night) 55%, #1b2733 100%);
}

.app[data-state="title"] .card-title,
.app[data-state="loading"] .card-loading,
.app[data-state="error"] .card-error { display: flex; }

.card-heading {
  position: relative;
  margin: 0;
  font: 500 26px/1.2 var(--font-pixel);
}

.card-note {
  position: relative;
  max-width: 34ch;
  margin: 0;
  font-size: 15px;
  color: #b9c8d5;
}

/* Title card: RED, the player's stats, then Play (or today's result). */
.card-title { gap: 4.5cqh; padding: 4cqh; }

.red-sprite {
  position: relative;
  height: 38cqh;
  width: auto;
  image-rendering: pixelated;
  filter: drop-shadow(0 1cqh 0 rgba(0, 0, 0, 0.35));
}

.stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0 5cqw;
  margin: 0;
}

.stats div {
  display: flex;
  flex-direction: column-reverse; /* number above its label */
  align-items: center;
}

.stats dd {
  margin: 0;
  font: 700 max(20px, 9cqh)/1 var(--font-pixel);
}

.stats dt {
  margin-top: 1cqh;
  font-size: max(11px, 3.4cqh);
  color: #b9c8d5;
  white-space: nowrap;
}

.card-title .button-play {
  padding: max(10px, 2.6cqh) max(28px, 9cqh);
  font-size: max(18px, 6cqh);
}

.played {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.2cqh;
}

.played p { margin: 0; }

.played-result { font: 600 max(16px, 5.6cqh)/1.2 var(--font-pixel); }

.played-next {
  font-size: max(12px, 3.8cqh);
  color: #b9c8d5;
  font-variant-numeric: tabular-nums;
}

/* Snow on the title card: the page's one piece of ambient motion. */
.snow {
  position: absolute;
  inset: -160px 0 0;
  background-image:
    radial-gradient(2px 2px at 20px 30px, #fff 50%, transparent 51%),
    radial-gradient(2px 2px at 90px 110px, #fff 50%, transparent 51%),
    radial-gradient(3px 3px at 150px 60px, #dfe9f1 50%, transparent 51%),
    radial-gradient(2px 2px at 60px 150px, #fff 50%, transparent 51%);
  background-size: 160px 160px;
  opacity: 0.55;
  animation: snowfall 9s linear infinite;
}

@keyframes snowfall {
  from { transform: translate(0, 0); }
  to { transform: translate(-40px, 160px); }
}

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

.meter {
  width: min(320px, 70%);
  height: 10px;
  padding: 2px;
  border: 2px solid #8fa3b5;
  border-radius: 3px;
}

.meter-fill {
  width: 0;
  height: 100%;
  background: var(--crimson);
  transition: width 0.2s linear;
}

/* Buttons ------------------------------------------------------------------ */

.button {
  font: 600 18px/1 var(--font-pixel);
  padding: 12px 20px;
  border-radius: 8px;
  border: 2px solid transparent;
  cursor: pointer;
  color: inherit;
  background: none;
}

.button:disabled { cursor: default; opacity: 0.45; }

.button-play {
  position: relative;
  padding: 16px 44px;
  font-size: 26px;
  color: #fff;
  background: var(--crimson);
  border-color: var(--crimson-deep);
  box-shadow: 0 4px 0 var(--crimson-deep);
}

.button-play:hover { background: #e2303a; }
.button-play:active { transform: translateY(3px); box-shadow: 0 1px 0 var(--crimson-deep); }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
}

.button-run {
  color: #fff;
  background: var(--crimson);
  border-color: var(--crimson-deep);
}

.button-run:not(:disabled):hover { background: #e2303a; }

.button-quiet {
  border-color: var(--line);
}

.button-quiet:not(:disabled):hover { border-color: var(--muted); }

/* Touch controls (phones and tablets only) ---------------------------------- */

.pad {
  display: none;
  grid-template-columns: 1fr auto;
  grid-template-areas: "dpad face" "meta meta";
  align-items: center;
  gap: 18px 12px;
  margin-top: 18px;
  padding: 18px 12px 8px;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

@media (pointer: coarse) {
  .pad { display: grid; }
}

.dpad {
  grid-area: dpad;
  position: relative;
  width: 144px;
  height: 144px;
  touch-action: none;
}

.dpad-arm {
  position: absolute;
  width: 48px;
  height: 48px;
  background: var(--bezel);
}

.dpad-up { left: 48px; top: 0; border-radius: 8px 8px 0 0; }
.dpad-down { left: 48px; bottom: 0; border-radius: 0 0 8px 8px; }
.dpad-left { left: 0; top: 48px; border-radius: 8px 0 0 8px; }
.dpad-right { right: 0; top: 48px; border-radius: 0 8px 8px 0; }
.dpad-center { left: 48px; top: 48px; }

.dpad[data-dir="up"] .dpad-up,
.dpad[data-dir="down"] .dpad-down,
.dpad[data-dir="left"] .dpad-left,
.dpad[data-dir="right"] .dpad-right { background: var(--crimson); }

.face {
  grid-area: face;
  display: flex;
  gap: 16px;
  padding-right: 4px;
}

.pad-button {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  border: none;
  font: 700 24px/1 var(--font-body);
  color: var(--on-dark);
  background: var(--bezel);
  touch-action: none;
}

.pad-a { transform: translateY(-22px); }

.pad-button.is-down,
.pad-pill.is-down { background: var(--crimson); }

.meta {
  grid-area: meta;
  display: flex;
  justify-content: center;
  gap: 20px;
}

.pad-pill {
  padding: 8px 18px;
  border: none;
  border-radius: 999px;
  font: 600 15px/1 var(--font-pixel);
  color: var(--on-dark);
  background: var(--dusk);
  touch-action: none;
}

/* Full screen: the console fills the display, screen as large as fits. */
.console:fullscreen {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 16px;
  background: var(--bezel);
  color: var(--on-dark);
}

.console:fullscreen .bezel {
  width: min(100%, calc((100vh - 120px) * 1.5));
  margin: 0 auto;
  padding: 0;
}

.console:fullscreen .toolbar { justify-content: center; }
.console:fullscreen .button-quiet { border-color: #3a4c5e; }

@media (pointer: coarse) {
  .console:fullscreen .bezel { width: min(100%, calc((100vh - 360px) * 1.5)); }
}

/* Guide -------------------------------------------------------------------- */

.guide {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 2px solid var(--line);
}

.guide-heading {
  margin: 0 0 12px;
  font: 600 21px/1.2 var(--font-pixel);
}

.keys { margin: 0; max-width: 34em; }

.keys div {
  display: grid;
  grid-template-columns: 9.5em 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 6px 0;
}

.keys dt { display: flex; flex-wrap: wrap; gap: 4px; }
.keys dd { margin: 0; }

kbd {
  display: inline-block;
  min-width: 1.9em;
  padding: 2px 6px;
  border: 2px solid var(--line);
  border-bottom-width: 4px;
  border-radius: 6px;
  font: 600 14px/1.3 var(--font-pixel);
  text-align: center;
}

.guide-note {
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--muted);
}

/* Footer: the fan-project disclaimer and the licenses link. */

.footer {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 2px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

.footer p { margin: 0 0 8px; max-width: 64ch; }
.footer p:last-child { margin-bottom: 0; }

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

@media (max-width: 640px) {
  .app { padding-top: 24px; }
  .title { font-size: 44px; }
  .bezel { padding: 5px; border-radius: 10px; }
  .card-loading, .card-error { gap: 12px; padding: 16px; }
  .card-heading { font-size: 20px; }
  .card-note { font-size: 13px; }
  .card-error .button-play { padding: 12px 32px; font-size: 22px; }
  .toolbar .button { padding: 10px 14px; font-size: 16px; }
}

/* Hidden team editor (opened with the Konami code) --------------------------- */

.te {
  width: min(640px, calc(100vw - 2 * var(--gutter)));
  max-height: calc(100dvh - 2 * var(--gutter));
  padding: 0;
  border: 2px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  background: var(--page);
}

.te::backdrop { background: rgba(10, 16, 24, 0.72); }

.te-form { display: flex; flex-direction: column; gap: 14px; padding: 20px; }
.te-title { margin: 0; font: 600 26px/1.2 var(--font-pixel); }
.te-note { margin: 0; font-size: 14px; color: var(--muted); }
.te-message { margin: 0; min-height: 1.4em; font-size: 14px; color: var(--crimson); }

.te-tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.te-tab {
  font: 500 14px/1 var(--font-pixel);
  padding: 8px 10px;
  color: inherit;
  background: none;
  border: 2px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}
.te-tab[aria-selected="true"] { color: #fff; background: var(--crimson); border-color: var(--crimson-deep); }

.te-fields { display: flex; flex-direction: column; gap: 12px; }
.te-row { display: flex; flex-wrap: wrap; gap: 12px; }
.te-row .te-field { flex: 1 1 200px; }
.te-field { display: flex; flex-direction: column; gap: 4px; font-size: 14px; }
.te-field span { color: var(--muted); }

.te select,
.te input[type="number"] {
  width: 100%;
  min-width: 0;
  font: inherit;
  padding: 8px;
  color: inherit;
  background: transparent;
  border: 2px solid var(--line);
  border-radius: 6px;
}

.te-moves { display: grid; gap: 8px; margin: 0; padding: 0; border: 0; }
.te-moves legend { padding: 0; margin-bottom: 4px; font-size: 14px; color: var(--muted); }
.te-check { display: flex; align-items: center; gap: 8px; font-size: 14px; }

.te-scroll { overflow-x: auto; }
.te-stats { width: 100%; border-collapse: collapse; font-size: 14px; }
.te-stats th, .te-stats td { padding: 4px 6px; text-align: left; }
.te-stats thead th { color: var(--muted); font-weight: 500; }
.te-stats td:nth-child(n+3) input { width: 5.5em; }

.te-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.te-actions .button-play { padding: 12px 24px; font-size: 20px; }
.te-actions .button-quiet { border-color: var(--line); }