:root {
  /* IBM Plex Mono only for command snippets; IBM Plex Sans** readable explanatory copy and short story fragments. */
  --ink: #101018;
  --cream: #FFF1B8;
  --magenta: #FF4FD8;
  --mint: #35E1B7;
  --blue: #5D6BFF;
  --amber: #FFB000;
  --paper: #E6E1D2;
  --shadow: #2B2748;
  --grid: 8px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--cream);
  font-family: "IBM Plex Sans", sans-serif;
  overflow-x: hidden;
  image-rendering: pixelated;
}

body.booted .boot-overlay { opacity: 0; pointer-events: none; transform: translateY(-16px); }

.crt-grid {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(255,241,184,.05) 0 2px, transparent 2px 8px),
    repeating-linear-gradient(90deg, rgba(93,107,255,.06) 0 2px, transparent 2px 8px);
  mix-blend-mode: screen;
}

.boot-overlay {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background: var(--ink);
  transition: opacity .55s steps(5), transform .55s steps(5);
}

.boot-terminal {
  width: min(640px, calc(100vw - 48px));
  border: 4px solid var(--cream);
  background: var(--shadow);
  padding: 32px;
  font-family: "IBM Plex Mono", monospace;
  color: var(--amber);
}

.boot-line { font-size: clamp(28px, 6vw, 64px); }
.prompt { color: var(--mint); }
.boot-sub { margin-top: 24px; color: var(--paper); font-size: 14px; }
.pixel-cursor { display: inline-block; width: .68em; height: 1em; background: var(--amber); vertical-align: -.12em; animation: cursorBlink .8s steps(1) infinite; }

.desktop-quest { position: relative; z-index: 2; }

.chapter {
  min-height: 100vh;
  position: relative;
  display: grid;
  place-items: center;
  padding: 88px 24px 112px;
  overflow: hidden;
  background-color: var(--ink);
  background-image:
    linear-gradient(45deg, rgba(255,79,216,.06) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(53,225,183,.05) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255,176,0,.05) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(93,107,255,.06) 75%);
  background-size: 32px 32px;
}

.chapter::before {
  content: attr(data-chapter);
  position: absolute;
  top: 24px;
  right: 32px;
  font-family: "Silkscreen", sans-serif;
  font-size: clamp(56px, 12vw, 152px);
  color: rgba(255,241,184,.08);
}

.p9-window {
  position: relative;
  width: min(880px, calc(100vw - 40px));
  border: 4px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  box-shadow: 6px 6px 0 var(--shadow), 12px 12px 0 rgba(16,16,24,.65);
  animation: windowJitter 3.8s steps(2) infinite;
}

.p9-window header {
  height: 40px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-bottom: 4px solid var(--ink);
  background: var(--blue);
  color: var(--cream);
  padding: 0 12px;
  font-family: "Silkscreen", sans-serif;
}

.p9-window header em { margin-left: auto; font-style: normal; font-family: "IBM Plex Mono", monospace; font-size: 12px; color: var(--amber); }
.lights { width: 52px; height: 16px; background: linear-gradient(90deg, var(--magenta) 0 14px, transparent 14px 19px, var(--mint) 19px 33px, transparent 33px 38px, var(--amber) 38px 52px); border: 2px solid var(--ink); }
.window-body { padding: clamp(24px, 5vw, 56px); }

.wordmark, h2 {
  margin: 0 0 20px;
  font-family: "Silkscreen", sans-serif;
  line-height: .95;
  color: var(--magenta);
  text-shadow: 4px 4px 0 var(--cream), 8px 8px 0 var(--shadow);
}

.wordmark { font-size: clamp(56px, 14vw, 152px); }
h2 { font-size: clamp(32px, 6vw, 72px); }
p { max-width: 620px; font-size: clamp(18px, 2.2vw, 25px); line-height: 1.35; }
code { display: inline-block; margin-top: 12px; border: 2px solid var(--ink); background: var(--ink); color: var(--mint); padding: 8px 12px; font-family: "IBM Plex Mono", monospace; }

.dither-shadow::after {
  content: "";
  position: absolute;
  inset: auto -18px -18px auto;
  width: 120px;
  height: 88px;
  background: repeating-conic-gradient(var(--shadow) 0 25%, transparent 0 50%) 0 0 / 8px 8px;
  z-index: -1;
  animation: ditherShimmer 1.1s steps(2) infinite;
}

.floppy-nav {
  position: fixed;
  z-index: 10;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  padding: 8px;
  background: var(--ink);
  border: 4px solid var(--cream);
  box-shadow: 6px 6px 0 var(--shadow);
}

.floppy-tab {
  width: clamp(32px, 8vw, 74px);
  height: 56px;
  border: 3px solid var(--ink);
  background: var(--blue);
  color: var(--cream);
  font-family: "Silkscreen", sans-serif;
  cursor: pointer;
  transition: transform .18s steps(2), background .18s steps(2);
}
.floppy-tab span { display: block; color: var(--amber); font-size: 12px; }
.floppy-tab b { font-size: clamp(8px, 1.6vw, 13px); }
.floppy-tab.active { background: var(--magenta); transform: translateY(-10px); color: var(--ink); }

.corner-window { justify-self: start; align-self: start; margin: 32px 0 0 7vw; max-width: 720px; transform: rotate(-1deg); }
.wide-window { transform: translateX(-4vw); }
.attic-window { transform: translate(5vw, -3vh) rotate(1deg); }
.debugger-window { transform: translate(-6vw, 5vh); }
.tunnel-window { transform: translate(4vw, 2vh) rotate(-1deg); }
.garden-window { transform: translate(-2vw, -4vh); }
.shell-window { transform: translate(6vw, 4vh); }
.manual-window { background: var(--cream); transform: rotate(.7deg); }
.parade-window { transform: translateY(-5vh); }

.process-sprite {
  position: absolute;
  width: 48px;
  height: 48px;
  background: var(--mint);
  border: 4px solid var(--ink);
  box-shadow: 6px 6px 0 var(--shadow);
  animation: spriteWalk .7s steps(2) infinite, spriteRoam 9s steps(12) infinite;
}
.process-sprite::before, .process-sprite::after { content: ""; position: absolute; top: 14px; width: 8px; height: 8px; background: var(--ink); }
.process-sprite::before { left: 10px; } .process-sprite::after { right: 10px; }
.process-sprite span { position: absolute; left: 14px; bottom: -12px; width: 20px; height: 12px; background: var(--magenta); border: 3px solid var(--ink); }
.hero-sprite { right: 18vw; top: 22vh; }

.floppy-moon { position: absolute; right: 14vw; top: 12vh; width: 112px; height: 112px; display: grid; place-items: center; border: 4px solid var(--ink); background: var(--cream); color: var(--blue); font-family: "Silkscreen"; font-size: 32px; box-shadow: 6px 6px 0 var(--shadow); }
.pixel-footprints { position: absolute; right: 10vw; top: 36vh; display: grid; gap: 18px; transform: rotate(-18deg); }
.pixel-footprints i { width: 16px; height: 16px; background: var(--amber); box-shadow: 18px 8px 0 var(--amber); }

.room-split, .debugger-grid, .shell-room { display: grid; grid-template-columns: minmax(220px, 1fr) 1.2fr; gap: 32px; align-items: center; }
.pipe-corridor { height: 220px; position: relative; border: 4px solid var(--ink); background: var(--cream); overflow: hidden; }
.pipe-corridor::before { content: ""; position: absolute; left: 20px; right: 20px; top: 84px; height: 48px; border: 12px solid var(--mint); background: var(--ink); }
.pipe-corridor span { position: absolute; top: 98px; width: 24px; height: 24px; background: var(--amber); animation: pipeFlow 2.4s linear infinite; }
.pipe-corridor span:nth-child(2) { animation-delay: .45s; } .pipe-corridor span:nth-child(3) { animation-delay: .9s; } .pipe-corridor span:nth-child(4) { animation-delay: 1.35s; }
.flower-bed { position: absolute; bottom: 120px; left: 9vw; display: flex; gap: 28px; }
.flower-bed i { width: 24px; height: 64px; background: linear-gradient(var(--magenta) 0 24px, var(--mint) 24px); border: 3px solid var(--ink); animation: flowerBob 1.4s steps(2) infinite; }

.namespace-drawer { display: grid; gap: 12px; max-width: 420px; }
.namespace-drawer span { padding: 14px 18px; border: 3px solid var(--ink); background: var(--blue); color: var(--cream); font-family: "IBM Plex Mono"; box-shadow: 6px 0 0 var(--amber); transform: translateX(calc(var(--n, 1) * 8px)); }
.namespace-drawer span:nth-child(2) { --n: 3; background: var(--mint); color: var(--ink); } .namespace-drawer span:nth-child(3) { --n: -1; background: var(--magenta); } .namespace-drawer span:nth-child(4) { --n: 5; background: var(--amber); color: var(--ink); }
.folder-mountains { position: absolute; left: 6vw; bottom: 12vh; display: flex; align-items: end; gap: 12px; }
.folder-mountains i { width: 120px; height: 70px; background: var(--amber); border: 4px solid var(--ink); clip-path: polygon(0 25%, 35% 25%, 45% 0, 100% 0, 100% 100%, 0 100%); }

.sprite-sheet { display: grid; grid-template-columns: repeat(2, 88px); gap: 16px; }
.sprite-sheet i { width: 88px; height: 88px; border: 4px solid var(--ink); background: var(--mint); position: relative; }
.sprite-sheet i::before { content: ""; position: absolute; inset: 24px 18px auto; height: 12px; background: linear-gradient(90deg, var(--ink) 0 12px, transparent 12px 24px, var(--ink) 24px); }
.sprite-sheet i:nth-child(2) { background: var(--magenta); transform: translateY(8px); } .sprite-sheet i:nth-child(3) { background: var(--amber); transform: translateX(-8px); } .sprite-sheet i:nth-child(4) { background: var(--blue); }

.message-rail { position: relative; height: 170px; border: 4px solid var(--ink); background: repeating-linear-gradient(90deg, var(--cream) 0 24px, var(--paper) 24px 48px); overflow: hidden; }
.message-rail::before { content: ""; position: absolute; left: 0; right: 0; top: 72px; height: 26px; background: var(--mint); border: 4px solid var(--ink); }
.message-rail span { position: absolute; top: 54px; padding: 8px 14px; border: 3px solid var(--ink); background: var(--magenta); font-family: "Silkscreen"; animation: messageZoom 3s linear infinite; }
.message-rail span:nth-child(2) { animation-delay: 1s; background: var(--amber); } .message-rail span:nth-child(3) { animation-delay: 2s; background: var(--blue); color: var(--cream); }

.fork-garden-plot { display: flex; gap: 18px; align-items: end; height: 180px; border-bottom: 4px solid var(--ink); }
.fork-garden-plot i { width: 34px; height: 60px; background: var(--amber); border: 3px solid var(--ink); position: relative; animation: growFork 1.8s steps(3) infinite alternate; }
.fork-garden-plot i::before, .fork-garden-plot i::after { content: ""; position: absolute; width: 28px; height: 22px; top: 14px; background: var(--mint); border: 3px solid var(--ink); }
.fork-garden-plot i::before { left: -24px; } .fork-garden-plot i::after { right: -24px; }
.fork-garden-plot i:nth-child(even) { animation-delay: .4s; }

.crab-bot { width: 190px; height: 120px; position: relative; background: var(--amber); border: 4px solid var(--ink); box-shadow: inset 0 -18px 0 var(--magenta); animation: crabPatch 1.2s steps(2) infinite; }
.crab-bot::before, .crab-bot::after { content: ""; position: absolute; top: 36px; width: 18px; height: 18px; background: var(--ink); }
.crab-bot::before { left: 52px; } .crab-bot::after { right: 52px; }
.crab-bot span { position: absolute; left: 70px; bottom: 24px; width: 50px; height: 12px; background: var(--ink); }
.crab-bot i { position: absolute; bottom: -22px; width: 44px; height: 22px; border: 4px solid var(--ink); background: var(--mint); }
.crab-bot i:nth-child(2) { left: 18px; } .crab-bot i:nth-child(3) { right: 18px; }

.manual-plaque { background: var(--paper); outline: 4px dashed var(--shadow); outline-offset: -18px; }
.manual-plaque h2 { color: var(--ink); text-shadow: 4px 4px 0 var(--amber); }
.parade-line { display: flex; gap: 10px; margin: 32px 0; }
.parade-line i { width: 42px; height: 42px; border: 4px solid var(--ink); background: var(--mint); animation: paradeHop .9s steps(2) infinite; }
.parade-line i:nth-child(3n) { background: var(--magenta); } .parade-line i:nth-child(3n+1) { background: var(--amber); } .parade-line i:nth-child(even) { animation-delay: .2s; }
.status-line { border: 4px solid var(--ink); background: var(--ink); color: var(--mint); padding: 14px; font-family: "IBM Plex Mono"; }

@keyframes cursorBlink { 50% { opacity: 0; } }
@keyframes windowJitter { 0%, 100% { margin-top: 0; } 50% { margin-top: -4px; } }
@keyframes ditherShimmer { 50% { transform: translate(8px, 8px); } }
@keyframes spriteWalk { 50% { box-shadow: 6px 0 0 var(--shadow); } }
@keyframes spriteRoam { 0%,100% { transform: translate(0,0); } 25% { transform: translate(-32px, 16px); } 50% { transform: translate(16px, 48px); } 75% { transform: translate(48px, -16px); } }
@keyframes pipeFlow { from { left: -40px; } to { left: 100%; } }
@keyframes flowerBob { 50% { transform: translateY(-10px); } }
@keyframes messageZoom { from { left: -80px; } to { left: 105%; } }
@keyframes growFork { to { height: 126px; } }
@keyframes crabPatch { 50% { transform: translateX(12px); } }
@keyframes paradeHop { 50% { transform: translateY(-18px); } }

@media (max-width: 760px) {
  .floppy-nav { gap: 3px; padding: 5px; max-width: calc(100vw - 12px); }
  .floppy-tab { height: 46px; border-width: 2px; }
  .floppy-tab b { display: none; }
  .room-split, .debugger-grid, .shell-room { grid-template-columns: 1fr; }
  .corner-window, .wide-window, .attic-window, .debugger-window, .tunnel-window, .garden-window, .shell-window, .manual-window, .parade-window { transform: none; margin-left: 0; }
  .process-sprite, .floppy-moon, .flower-bed, .folder-mountains { display: none; }
}