/* Reset, typography, layout primitives and shared components. */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--step-0);
  font-variation-settings: 'opsz' 16;
  line-height: 1.62;
  overflow-x: clip;
  transition: background-color var(--dur) var(--ease-soft), color var(--dur) var(--ease-soft);
}

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

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

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.02;
  font-weight: 800;
  font-stretch: 78%;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

h2 {
  font-size: var(--step-3);
}

h3 {
  font-size: var(--step-1);
  font-stretch: 85%;
}

p {
  text-wrap: pretty;
}

a {
  color: inherit;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.18em;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--pink);
  outline-offset: 3px;
  border-radius: 6px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip {
  position: fixed;
  left: 0.75rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--surface);
  border: var(--stroke) solid var(--line);
  border-radius: var(--radius-s);
  top: -5rem;
}

.skip:focus {
  top: 0.75rem;
}

/* Film grain like a printed cartoon cel: only on illustrations (hero, scenes), never over body text. */
:root {
  --noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.23 0 0 0 0 0.12 0 0 0 0 0.2 0 0 0 1.1 -0.15'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hero::before,
.scene::after {
  content: ;
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: var(--grain-opacity);
  mix-blend-mode: var(--grain-blend);
  background-image: var(--noise);
  background-size: 220px 220px;
}

.hero::before {
  z-index: 10;
}

/* ---------- layout ---------- */
.wrap {
  width: min(100% - 2 * var(--gutter), var(--content));
  margin-inline: auto;
}

.chapter {
  position: relative;
  padding-block: var(--space-section);
}

.chapter-head {
  display: grid;
  gap: 0.9rem;
  margin-bottom: clamp(2rem, 1.5rem + 2vw, 3.5rem);
  max-width: 44rem;
}

.chapter-sign {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.8rem 0.35rem;
  background: var(--mustard);
  color: #3a1f35;
  border: var(--stroke) solid var(--line);
  border-radius: 6px;
  box-shadow: var(--shadow-hard-s);
  font-family: var(--font-pixel);
  font-size: var(--step--1);
  transform: rotate(-2deg);
}

.chapter-lead {
  font-size: var(--step-1);
  color: var(--text-soft);
  max-width: 38rem;
}

/* ---------- components ---------- */
.card {
  position: relative;
  background: var(--surface);
  border: var(--stroke) solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  padding: clamp(1.1rem, 0.9rem + 1vw, 1.75rem);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 48px;
  padding: 0.7rem 1.25rem;
  background: var(--mustard);
  color: #3a1f35;
  border: var(--stroke) solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow-hard-s);
  font-weight: 700;
  font-stretch: 90%;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-soft), box-shadow var(--dur-fast) var(--ease-soft);
}

.btn:hover {
  transform: translate(-1px, -2px);
  box-shadow: 4px 6px 0 var(--hard);
}

.btn:active {
  transform: translate(3px, 4px);
  box-shadow: 0 0 0 var(--hard);
}

.btn--pink {
  background: var(--pink);
}

.btn--mint {
  background: var(--mint);
}

.btn--ghost {
  background: var(--surface);
  color: var(--text);
}

/* Speech bubble in the characters' pixel voice. */
.bubble {
  position: relative;
  display: inline-block;
  padding: 0.7rem 0.95rem;
  background: var(--cream);
  color: #3a1f35;
  border: var(--stroke) solid var(--line);
  border-radius: 4px;
  box-shadow: var(--shadow-hard-s);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--step-0);
  line-height: 1.45;
}

.bubble::after {
  content: '';
  position: absolute;
  left: 1.6rem;
  bottom: -14px;
  width: 16px;
  height: 14px;
  background: var(--cream);
  border-right: var(--stroke) solid var(--line);
  border-bottom: var(--stroke) solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

/* Copy box: prompt text plus a copy button. */
.copybox {
  position: relative;
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
  padding: 1rem;
  background: #2f1a2b;
  color: #fbe9d0;
  border: var(--stroke) solid var(--line);
  border-radius: var(--radius-s);
}

.copybox pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, 'Cascadia Mono', Consolas, monospace;
  font-size: var(--step--1);
  line-height: 1.5;
}

.copybox .btn {
  justify-self: start;
  min-height: 40px;
  padding: 0.45rem 0.95rem;
  font-size: var(--step--1);
}

.px {
  image-rendering: pixelated;
  overflow: visible;
}

.px-eyes {
  transform-box: fill-box;
  transform-origin: center;
  animation: blink 5.5s infinite;
}

@keyframes blink {
  0%,
  94%,
  100% {
    transform: scaleY(1);
  }
  96% {
    transform: scaleY(0.15);
  }
}

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

  .px-eyes {
    animation: none;
  }
}