:root {
  --color-arcade-charcoal: #171a22;
  --color-cabinet-black: #0b0d12;
  --color-warm-cream: #f4e8c1;
  --color-cream-muted: #d9cca5;
  --color-arcade-red: #e43d30;
  --color-electric-blue: #287cff;
  --color-phosphor-green: #7cde58;
  --color-star-white: #fff8dd;
  --color-focus-yellow: #ffd447;

  --font-heading: "Press Start 2P", "Courier New", monospace;
  --font-body: "Atkinson Hyperlegible", Arial, sans-serif;

  --text-micro: 0.75rem;
  --text-meta: 0.875rem;
  --text-body: 1rem;
  --text-lead: 1.125rem;
  --text-section: clamp(1.25rem, 2vw, 1.5rem);
  --text-page: clamp(1.65rem, 4vw, 2rem);
  --text-display: clamp(1.875rem, 5vw, 2.625rem);

  --line-tight: 1.1;
  --line-body: 1.6;
  --line-dense: 1.45;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  --container-max: 73.75rem;
  --gutter: 1.5rem;
  --panel-padding: clamp(1.5rem, 3vw, 2rem);
  --compact-padding: clamp(1rem, 2vw, 1.25rem);

  --radius-none: 0;
  --radius-pixel: 2px;

  --border-thin: 1px;
  --border-pixel: 2px;
  --border-frame: 3px;

  --shadow-hard: 4px 4px 0 var(--color-cabinet-black);
  --shadow-hard-small: 2px 2px 0 var(--color-cabinet-black);

  --transition-fast: 140ms ease-out;
}

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

html {
  min-width: 320px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-6);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background-color: var(--color-arcade-charcoal);
  color: var(--color-warm-cream);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--line-body);
  text-rendering: optimizeLegibility;
}

body::selection {
  background: var(--color-electric-blue);
  color: var(--color-star-white);
}

img,
picture,
svg,
canvas,
video,
iframe {
  display: block;
  max-width: 100%;
}

img,
video {
  height: auto;
}

iframe {
  width: 100%;
  border: 0;
}

button,
input,
select,
textarea {
  max-width: 100%;
  color: inherit;
  font: inherit;
}

button,
select {
  cursor: pointer;
}

button {
  border: 0;
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

legend {
  padding: 0;
}

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

th,
td {
  overflow-wrap: anywhere;
  text-align: left;
  vertical-align: top;
}

a {
  color: var(--color-electric-blue);
  text-decoration-color: currentColor;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.16em;
  transition:
    color var(--transition-fast),
    text-decoration-color var(--transition-fast);
}

a:hover {
  color: var(--color-warm-cream);
  text-decoration-color: var(--color-phosphor-green);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-focus-yellow);
  outline-offset: 3px;
}

:focus:not(:focus-visible) {
  outline: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-block: 0 var(--space-4);
  color: currentColor;
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: var(--line-tight);
  overflow-wrap: anywhere;
}

h1 {
  font-size: var(--text-display);
  letter-spacing: -0.04em;
}

h2 {
  font-size: var(--text-page);
  letter-spacing: -0.03em;
}

h3 {
  font-size: var(--text-section);
  letter-spacing: -0.02em;
}

h4 {
  font-size: 1rem;
}

h5,
h6 {
  font-size: var(--text-meta);
}

p {
  margin-block: 0 var(--space-4);
}

ul,
ol {
  margin-block: 0 var(--space-4);
  padding-inline-start: 1.35rem;
}

li::marker {
  color: var(--color-electric-blue);
}

blockquote {
  margin: 0 0 var(--space-4);
  padding: var(--space-4);
  border-inline-start: 3px solid var(--color-phosphor-green);
  background: color-mix(in srgb, var(--color-cabinet-black) 78%, transparent);
}

figure {
  margin: 0 0 var(--space-4);
}

figcaption {
  margin-top: var(--space-2);
  color: var(--color-cream-muted);
  font-size: var(--text-meta);
  line-height: var(--line-dense);
}

hr {
  height: 2px;
  margin-block: var(--space-6);
  border: 0;
  background: var(--color-electric-blue);
}

small {
  font-size: var(--text-meta);
}

strong {
  font-weight: 700;
}

code,
kbd,
samp,
pre {
  font-family: "Courier New", monospace;
}

code,
kbd,
samp {
  padding: 0.1em 0.3em;
  border: 1px solid var(--color-electric-blue);
  background: var(--color-cabinet-black);
  color: var(--color-phosphor-green);
}

pre {
  max-width: 100%;
  margin: 0 0 var(--space-4);
  padding: var(--space-4);
  overflow: auto;
  border: 2px solid var(--color-electric-blue);
  background: var(--color-cabinet-black);
  color: var(--color-warm-cream);
}

pre code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
}

.container {
  width: min(100% - (var(--gutter) * 2), var(--container-max));
  margin-inline: auto;
}

.surface-cream {
  padding: var(--panel-padding);
  border: var(--border-pixel) solid var(--color-arcade-charcoal);
  background: var(--color-warm-cream);
  color: var(--color-arcade-charcoal);
  box-shadow: var(--shadow-hard);
}

.surface-dark {
  padding: var(--panel-padding);
  border: var(--border-pixel) solid var(--color-electric-blue);
  background: var(--color-cabinet-black);
  color: var(--color-warm-cream);
  box-shadow: var(--shadow-hard);
}

.surface-cream > :last-child,
.surface-dark > :last-child,
.compact-group > :last-child,
.content-stack > :last-child {
  margin-block-end: 0;
}

.compact-group {
  padding: var(--compact-padding);
}

.content-stack > * {
  min-width: 0;
}

.pixel-label {
  margin: 0;
  color: inherit;
  font-family: var(--font-heading);
  font-size: var(--text-micro);
  letter-spacing: 0.08em;
  line-height: 1.35;
  text-transform: uppercase;
}

.score-text {
  color: var(--color-phosphor-green);
  font-family: var(--font-heading);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.score-panel {
  padding: var(--compact-padding);
  border: var(--border-pixel) solid var(--color-electric-blue);
  border-top-width: var(--border-frame);
  background: var(--color-cabinet-black);
  color: var(--color-warm-cream);
  box-shadow: inset 0 0 0 1px var(--color-arcade-charcoal);
}

.score-panel > :last-child {
  margin-block-end: 0;
}

.frame-pixel {
  overflow: hidden;
  border: var(--border-frame) solid var(--color-electric-blue);
  background: var(--color-cabinet-black);
  box-shadow: inset 0 0 0 2px var(--color-arcade-charcoal);
}

.frame-pixel > img,
.frame-pixel > video {
  width: 100%;
  object-fit: cover;
}

.section-marker {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
  margin-bottom: var(--space-4);
  color: var(--color-electric-blue);
}

.section-marker::before {
  width: 2.5rem;
  height: 3px;
  flex: 0 0 auto;
  background: currentColor;
  content: "";
}

.section-marker > * {
  min-width: 0;
  margin: 0;
}

.button,
button,
input[type="button"],
input[type="submit"],
input[type="reset"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  max-width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-cabinet-black);
  border-radius: var(--radius-pixel);
  background: var(--color-arcade-red);
  color: var(--color-warm-cream);
  font-family: var(--font-heading);
  font-size: var(--text-micro);
  letter-spacing: 0.03em;
  line-height: 1.3;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  box-shadow: var(--shadow-hard);
  transition:
    background-color var(--transition-fast),
    color var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.button:hover,
button:hover,
input[type="button"]:hover,
input[type="submit"]:hover,
input[type="reset"]:hover {
  background: #f05245;
  color: var(--color-star-white);
}

.button:active,
button:active,
input[type="button"]:active,
input[type="submit"]:active,
input[type="reset"]:active {
  transform: translateY(2px);
  box-shadow: var(--shadow-hard-small);
}

.button--blue {
  background: var(--color-electric-blue);
}

.button--blue:hover {
  background: #4a94ff;
}

.button--full {
  width: 100%;
}

input:not([type="button"]):not([type="submit"]):not([type="reset"]),
select,
textarea {
  width: 100%;
  min-height: 3rem;
  padding: 0.65rem 0.75rem;
  border: 2px solid var(--color-arcade-charcoal);
  border-radius: var(--radius-none);
  background: var(--color-star-white);
  color: var(--color-arcade-charcoal);
  line-height: var(--line-dense);
}

input::placeholder,
textarea::placeholder {
  color: color-mix(in srgb, var(--color-arcade-charcoal) 62%, transparent);
}

label {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-weight: 700;
}

.form-field {
  min-width: 0;
  margin-bottom: var(--space-4);
}

.form-field:last-child {
  margin-bottom: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 1000;
  padding: var(--space-3) var(--space-4);
  background: var(--color-focus-yellow);
  color: var(--color-cabinet-black);
  font-family: var(--font-heading);
  font-size: var(--text-micro);
  text-decoration: none;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: translateY(0);
}

.scanline-surface {
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    rgb(255 248 221 / 4%) 4px
  );
}

@media (max-width: 520px) {
  :root {
    --gutter: 1rem;
  }

  h1 {
    font-size: 1.875rem;
  }

  .button,
  button,
  input[type="button"],
  input[type="submit"],
  input[type="reset"] {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms;
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
  }
}