/* readme_portrait — phosphor terminal on warm paper: windowed UI, pixel labels, big grotesk type.
   Tokens first; every colour, size and border below comes from here. */

/* Korean pixel glyphs (Galmuri11, OFL), subset to the words in js/i18n.js; only fetched for Hangul */
@font-face {
  font-family: "Galmuri11";
  src: url("assets/fonts/galmuri11-ko.woff2") format("woff2");
  unicode-range: U+AC00-D7A3, U+3131-318E, U+300C-300D;
  size-adjust: 88%; /* Galmuri runs larger than VT323 at the same font-size */
  font-display: swap;
}
:root {
  --paper: #f2eee3;
  --ink: #141414;
  --muted: #4d4a42;
  --panel: #e4dfd2;
  --panel-hi: #faf7ef;
  --term: #0b0f0c;
  --phosphor: #1fd466;
  --amber: #ffb000;

  --display: "Inter Tight", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --body: "Inter Tight", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --pixel: "VT323", "Galmuri11", "JetBrains Mono", ui-monospace, monospace;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --gutter: clamp(16px, 4vw, 48px);
  --max: 1320px;
  --bar: 24px;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.5 var(--body); }
:lang(ko) body, body:lang(ko) { word-break: keep-all; }
a { color: inherit; }
img { max-width: 100%; }
code, pre, .mono { font-family: var(--mono); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 8px; top: 8px; z-index: 10; background: var(--ink); color: var(--paper); padding: 6px 10px; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding-inline: var(--gutter); }

/* ---------- menu bar: pinned to the top edge like an old desktop ---------- */
.menubar {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 4px; min-height: 34px; padding: 0 8px;
  background: var(--ink); color: var(--panel-hi); font: 20px/1 var(--pixel); letter-spacing: 0.02em;
}
.menubar a, .menubar button { color: inherit; text-decoration: none; background: none; border: 0; font: inherit; padding: 7px 10px; cursor: pointer; }
.menubar a:hover, .menubar button:hover { background: var(--phosphor); color: var(--ink); }
.menu-brand { color: var(--phosphor) !important; }
.menu-brand:hover { color: var(--ink) !important; }
.menu-items { display: flex; }
.menu-right { display: flex; margin-left: auto; }
.menu-star { background: var(--amber) !important; color: var(--ink) !important; }
.menu-star:hover { background: var(--phosphor) !important; }

/* ---------- window component ---------- */
.win { background: var(--panel); color: var(--ink); border: 1px solid var(--ink); box-shadow: 3px 3px 0 var(--ink); min-width: 0; }
.win-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: var(--bar); padding: 0 6px;
  background: var(--ink); color: var(--phosphor); font: 20px/1 var(--pixel); letter-spacing: 0.02em; white-space: nowrap; overflow: hidden;
}
.win-bar h2, .win-bar h3 { font: inherit; margin: 0; overflow: hidden; text-overflow: ellipsis; }
.win-bar .meta { opacity: 0.7; }
.win-body { margin: 3px; padding: 14px; border: 1px solid var(--ink); background: var(--panel); }
.win-body > :first-child { margin-top: 0; }
.win-body > :last-child { margin-bottom: 0; }

.pixel { font-family: var(--pixel); font-size: 20px; line-height: 1.15; letter-spacing: 0.02em; }
.label { font: 13px/1.2 var(--mono); text-transform: uppercase; letter-spacing: 0.04em; }
.chip { display: inline-block; background: var(--ink); color: var(--phosphor); font: 18px/1 var(--pixel); padding: 3px 6px; }

/* ---------- controls ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 40px; padding: 6px 14px;
  font: 22px/1 var(--pixel); letter-spacing: 0.02em; text-decoration: none; cursor: pointer;
  background: var(--paper); color: var(--ink); border: 1px solid var(--ink);
}
.btn:hover { background: var(--ink); color: var(--paper); }
.btn.solid { background: var(--ink); color: var(--paper); }
.btn.solid:hover { background: var(--phosphor); color: var(--ink); }
.btn.block { width: 100%; }
.btn.small { min-height: 30px; padding: 2px 10px; font-size: 19px; }
.btn.play::before { content: ""; border-left: 8px solid currentColor; border-block: 5px solid transparent; }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.4; pointer-events: none; }

.field { display: grid; gap: 6px; margin: 0; }
.field-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; font-size: 14px; }
.field-head output { font: 18px/1 var(--pixel); }
input[type="text"], input:not([type]), select {
  width: 100%; min-height: 44px; padding: 8px 12px; background: var(--panel-hi); color: var(--ink);
  border: 1px solid transparent; border-radius: 0; font: 20px/1.2 var(--pixel); letter-spacing: 0.02em;
}
select { font: 15px/1.2 var(--body); appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--ink) 50%), linear-gradient(135deg, var(--ink) 50%, transparent 50%); background-position: calc(100% - 18px) 50%, calc(100% - 12px) 50%; background-size: 6px 6px; background-repeat: no-repeat; padding-right: 32px; }
input:focus, select:focus { border-color: var(--ink); outline: none; }
input::placeholder { color: #8a8a8a; }
input[type="range"] { width: 100%; accent-color: var(--ink); margin: 0; }
input[type="checkbox"] { accent-color: var(--ink); width: 18px; height: 18px; margin: 0; }
.check { display: flex; gap: 8px; align-items: center; font-size: 14px; cursor: pointer; }

.seg { display: flex; border: 1px solid var(--ink); }
.seg label { flex: 1; position: relative; }
.seg input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.seg span { display: block; text-align: center; padding: 6px 4px; font: 19px/1 var(--pixel); background: var(--panel-hi); }
.seg label + label span { border-left: 1px solid var(--ink); }
.seg input:checked + span { background: var(--ink); color: var(--paper); }
.seg input:focus-visible + span { outline: 2px solid var(--phosphor); outline-offset: -4px; }

/* ---------- hero: dithered sky ---------- */
.hero { position: relative; background: var(--paper) url("assets/hero-wave.svg") center top / cover no-repeat; padding: 56px 0 0; }
.hero::after { content: ""; display: block; height: 96px; background: linear-gradient(to bottom, transparent, var(--paper)); }
.hero-stack { display: grid; gap: 20px; justify-items: center; }
.start { width: min(100%, 440px); }
.start .win-body { text-align: center; display: grid; gap: 12px; }
.start h1 { font: 24px/1.1 var(--pixel); margin: 0; letter-spacing: 0.03em; }
.start p { margin: 0; font: 19px/1.25 var(--pixel); }
.start .hint { font-size: 17px; opacity: 0.75; }
.start input { text-align: left; }
#gh-go { margin-top: 8px; }
.tabs { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--ink); }
.tabs [role="tab"] { font: 20px/1 var(--pixel); padding: 8px; background: var(--panel-hi); color: var(--ink); border: 0; cursor: pointer; }
.tabs [role="tab"] + [role="tab"] { border-left: 1px solid var(--ink); }
.tabs [aria-selected="true"] { background: var(--ink); color: var(--phosphor); }
.dropzone {
  display: grid; gap: 6px; place-items: center; min-height: 104px; padding: 16px; cursor: pointer;
  border: 2px dashed var(--ink); background: var(--panel-hi); text-align: center;
}
.dropzone:hover, .dropzone:focus-within { background: var(--phosphor); }
.dropzone-title { font: 22px/1.1 var(--pixel); }
.dropzone-hint { font: 17px/1.1 var(--pixel); color: var(--muted); }
.classics-pick { width: min(100%, 440px); }
.picks { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.pick { display: grid; gap: 4px; padding: 0; background: none; border: 0; cursor: pointer; text-align: center; font: 16px/1 var(--pixel); color: var(--ink); }
.pick img { width: 100%; aspect-ratio: 1; object-fit: cover; border: 1px solid var(--ink); filter: grayscale(1) contrast(1.1); transition: filter 0.15s; }
.pick:hover img, .pick:focus-visible img, .pick[aria-pressed="true"] img { filter: none; }
.pick[aria-pressed="true"] span { background: var(--ink); color: var(--paper); }

.prompt-line { width: fit-content; max-width: 100%; margin: 40px auto 0; padding: 6px 12px; background: var(--ink); color: var(--panel-hi); font: 20px/1.2 var(--pixel); overflow-wrap: anywhere; }
.prompt-line .ps { color: var(--phosphor); }
.cursor { display: inline-block; width: 0.55em; height: 1em; margin-left: 2px; vertical-align: -0.12em; background: var(--phosphor); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.headline {
  font: 800 clamp(48px, 10.5vw, 150px)/0.9 var(--display); letter-spacing: -0.055em; text-align: center; margin: 20px 0 0;
  text-wrap: balance;
}
:lang(ko) .headline { letter-spacing: -0.04em; line-height: 1; }
.typed { font: 400 0.92em/1 var(--pixel); letter-spacing: 0; background: var(--ink); color: var(--phosphor); padding: 0 0.12em; }

/* ---------- colour blocks with crop marks ---------- */
.band { position: relative; padding: clamp(48px, 8vw, 96px) 0; }
.band.term { background: var(--term); color: var(--panel-hi); }
.band.term .win { box-shadow: 3px 3px 0 var(--phosphor); }
.band.phosphor { background: var(--phosphor); }
.band.amber { background: var(--amber); }
.section-head { display: grid; justify-items: center; gap: 16px; text-align: center; }
.kicker { font: 20px/1 var(--pixel); background: var(--ink); color: var(--phosphor); padding: 4px 8px; }
.band.term .kicker { background: var(--phosphor); color: var(--ink); }
.section-title { font: 700 clamp(40px, 7vw, 104px)/0.92 var(--display); letter-spacing: -0.05em; text-align: center; margin: 0; text-wrap: balance; }
:lang(ko) .section-title { letter-spacing: -0.035em; line-height: 1.02; }
.section-lead { max-width: 620px; margin: 0 auto; text-align: center; font-size: 18px; }

/* ---------- studio ---------- */
.studio { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr) minmax(0, 360px); gap: 20px; align-items: start; margin-top: 40px; }
.col { display: grid; gap: 20px; min-width: 0; }
.options-body { display: grid; gap: 16px; }
.group { display: grid; gap: 12px; border: 0; padding: 0; margin: 0; min-width: 0; }
.group legend { padding: 0; margin-bottom: 4px; }
.group + .group { border-top: 1px dashed var(--ink); padding-top: 14px; }
fieldset:disabled .field, fieldset:disabled .check { opacity: 0.45; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.preview-body { background: var(--term); border-color: var(--ink); padding: 12px; display: grid; place-items: center; min-height: 360px; }
.preview-body img { width: 100%; max-width: 560px; height: auto; display: block; }
.preview-body img:not([src]) { visibility: hidden; }
.preview-tools { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between; margin: 3px; padding: 8px; border: 1px solid var(--ink); }
.tool-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.preview-tools .stats { font: 19px/1 var(--pixel); }
.status { min-height: 1.4em; margin: 3px; padding: 0 8px 6px; font: 19px/1.25 var(--pixel); }
.status.error { color: #b3001b; }
.status.warn { color: #8a5300; }

.source-body { display: grid; gap: 10px; }
.source-canvas { width: 100%; height: auto; display: block; background: var(--panel-hi); border: 1px solid var(--ink); touch-action: none; cursor: grab; image-rendering: auto; }
.source-canvas:active { cursor: grabbing; }
.source-canvas:focus-visible { outline: 2px solid var(--phosphor); outline-offset: 2px; }
.source-help { font-size: 13px; margin: 0; color: var(--muted); }

.stages { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.stage { margin: 0; display: grid; gap: 4px; }
.stage canvas { width: 100%; aspect-ratio: 520 / 555; display: block; background: var(--panel-hi); border: 1px solid var(--ink); image-rendering: pixelated; }
.stage figcaption { font: 16px/1.1 var(--pixel); }
.stage figcaption b { display: block; font-weight: 400; color: var(--muted); }
.timing { font: 18px/1 var(--pixel); margin: 10px 0 0; }

pre { margin: 0; padding: 12px; background: var(--paper); border: 1px solid var(--ink); overflow-x: auto; font-size: 12.5px; line-height: 1.5; }
pre code { white-space: pre-wrap; word-break: break-all; }
.readme-body { display: grid; gap: 12px; }
.steps { margin: 0; padding-left: 20px; font-size: 14px; display: grid; gap: 4px; }
.steps code { background: var(--panel-hi); padding: 0 4px; }
details.ai summary { cursor: pointer; font: 19px/1.2 var(--pixel); }
details.ai[open] summary { margin-bottom: 8px; }
details.ai .btn { margin-top: 8px; }

.drop-veil {
  position: fixed; inset: 0; z-index: 20; display: grid; place-items: center; pointer-events: none; opacity: 0;
  background: rgba(242, 238, 227, 0.92); transition: opacity 0.12s;
}
.drop-veil.on { opacity: 1; }
.drop-veil .win { width: min(90vw, 360px); }
.veil-text { text-align: center; }

/* ---------- gallery ---------- */
.gallery figure { margin: 0; }
.gallery-tabs { max-width: 560px; margin: 32px auto 0; grid-template-columns: repeat(3, 1fr); border-color: var(--phosphor); }
.gallery-tabs [role="tab"] + [role="tab"] { border-left-color: var(--phosphor); }
.gallery-tabs [aria-selected="true"] { background: var(--phosphor); color: var(--ink); }
.gallery[data-group="art"] figure:not([data-group="art"]),
.gallery[data-group="anime"] figure:not([data-group="anime"]),
.gallery[data-group="space"] figure:not([data-group="space"]) { display: none; }
.gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 40px; }
.gallery .win-body { background: var(--term); padding: 8px; }
.gallery img { display: block; width: 100%; height: auto; }
.gallery img:not([src]) { visibility: hidden; }
.gallery .wide-card { display: flex; flex-direction: column; }
.gallery .wide-card .win-body { flex: 1; display: grid; place-items: center; }
.gallery-foot { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin: 3px; padding: 6px 8px; border: 1px solid var(--ink); font-size: 13px; }
.gallery-foot cite { font-style: normal; }

/* ---------- how it works ---------- */
.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; margin-top: 56px; }
.fact { border-left: 1px solid var(--ink); padding: 0 20px 8px; }
.fact .label { display: block; margin-bottom: 10px; }
.fact p { margin: 0; font-size: 17px; }
.numbers { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin-top: 56px; }
.num { border-left: 1px solid var(--ink); padding: 0 20px; }
.num strong { display: block; font: 700 clamp(40px, 5vw, 72px)/1 var(--display); letter-spacing: -0.05em; }
.num span { font-size: 14px; }

/* ---------- FAQ ---------- */
.faq { max-width: 760px; margin: 40px auto 0; }
.faq details { border-left: 2px solid var(--ink); padding: 10px 0 10px 16px; margin-bottom: 8px; background: rgba(255, 255, 255, 0.18); }
.faq summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; font: 700 14px/1.4 var(--mono); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; border: 1px solid currentColor; width: 20px; height: 20px; display: grid; place-items: center; flex: none; font-weight: 400; }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: 12px 0 4px; font-size: 19px; line-height: 1.4; font-weight: 600; letter-spacing: -0.01em; }

.footer { background: var(--ink); color: var(--panel-hi); padding: 64px 0 28px; }
.wordmark { font: 400 clamp(56px, 13vw, 200px)/0.85 var(--pixel); color: var(--phosphor); margin: 0; letter-spacing: -0.02em; overflow-wrap: anywhere; }
.foot-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; margin-top: 32px; font: 18px/1.3 var(--pixel); }
.foot-row a { color: var(--panel-hi); }

/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .studio { grid-template-columns: minmax(0, 320px) minmax(0, 1fr); }
  .studio .col-side { grid-column: 1 / -1; grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 820px) {
  .menu-items { display: none; }
  .studio, .studio .col-side { grid-template-columns: minmax(0, 1fr); }
  .col-main { order: -1; }
  .gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .facts, .numbers { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .numbers { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 480px) {
  .hero { padding-top: 72px; }
  .prompt-line { font-size: 17px; }
  .picks { grid-template-columns: repeat(3, 1fr); }
  .gallery { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .stages { grid-template-columns: repeat(2, 1fr); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pick img, .drop-veil { transition: none; }
  .cursor { animation: none; }
}