@font-face {
  font-family: "Galmuri11";
  src: url("../identity-concept-v3-retro-motion/fonts/Galmuri11.woff2") format("woff2");
  font-display: swap;
}

:root {
  color-scheme: dark;
  --black: #050705;
  --black-soft: #0c0f0c;
  --ivory: #f1f0e9;
  --lime: #d1e59a;
  --lime-bright: #e6ffa6;
  --blue: #101d78;
  --blue-light: #2947b8;
  --chrome: #bcbfbd;
  --chrome-light: #eef0ec;
  --chrome-mid: #8b8e8b;
  --chrome-dark: #3e413e;
  --ink: #090b09;
  --accent: var(--lime);
  --accent-dark: #677b35;
  --pixel: "Galmuri11", "SFMono-Regular", Consolas, monospace;
  --ui: "SFMono-Regular", Consolas, monospace;
  --sans: "Helvetica Neue", Arial, "Apple SD Gothic Neo", sans-serif;
  --serif: Georgia, "Noto Serif KR", serif;
}

* { box-sizing: border-box; }

html {
  min-width: 320px;
  min-height: 100%;
  background: var(--black);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background: var(--black);
  font-family: var(--sans);
}

body[data-language="yu"] { --accent: #f1f0e9; --accent-dark: #6676bb; }
body[data-language="cheong"] { --accent: #a9bdff; --accent-dark: #324995; }

body::after {
  position: fixed;
  inset: 0;
  z-index: 100;
  content: "";
  pointer-events: none;
  opacity: .18;
  background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(241, 240, 233, .07) 3px 4px);
  mix-blend-mode: soft-light;
}

a, button { -webkit-tap-highlight-color: transparent; }

.skip-link {
  position: fixed;
  z-index: 200;
  top: 8px;
  left: 8px;
  padding: 9px 12px;
  color: var(--black);
  background: var(--lime);
  transform: translateY(-160%);
}

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

.retro-stage {
  position: relative;
  display: grid;
  min-height: 100vh;
  padding: 24px;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 12%, rgba(41, 71, 184, .18), transparent 31rem),
    radial-gradient(circle at 8% 86%, rgba(209, 229, 154, .12), transparent 28rem),
    var(--black);
}

.stage-grid {
  position: fixed;
  inset: 0;
  opacity: .18;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(209, 229, 154, .2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(209, 229, 154, .2) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(135deg, black, transparent 74%);
}

.stage-note {
  position: fixed;
  z-index: 1;
  margin: 0;
  color: rgba(241, 240, 233, .52);
  font: 8px/1 var(--pixel);
  letter-spacing: .12em;
}

.stage-note-top { top: 12px; left: 16px; }
.stage-note-bottom { right: 16px; bottom: 12px; }

.app-shell {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-rows: 38px 38px minmax(0, 1fr) 28px;
  width: min(1120px, 100%);
  height: min(900px, calc(100vh - 48px));
  min-height: 650px;
  overflow: hidden;
  background: var(--chrome);
  border: 3px solid var(--chrome-light);
  border-right-color: var(--chrome-dark);
  border-bottom-color: var(--chrome-dark);
  box-shadow: 20px 26px 0 rgba(0, 0, 0, .26), 28px 38px 80px rgba(0, 0, 0, .58);
}

.title-bar,
.subwindow-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-width: 0;
  color: white;
  background: linear-gradient(90deg, #070e57, var(--blue) 46%, var(--blue-light));
  border-bottom: 2px solid var(--chrome-dark);
  font: 800 10px/1 var(--pixel);
  letter-spacing: .04em;
}

.window-name { display: flex; align-items: center; gap: 8px; min-width: 0; padding-left: 6px; }
.window-name strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.window-icon {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  flex: 0 0 auto;
  color: var(--black);
  background: var(--lime);
  border: 1px solid white;
  font: 900 11px/1 var(--serif);
}

.window-controls {
  position: relative;
  z-index: 21;
  display: flex;
  align-self: stretch;
}
.window-controls button {
  display: grid;
  width: 36px;
  min-height: 36px;
  margin: 0;
  padding: 0;
  place-items: center;
  color: var(--black);
  background: var(--chrome);
  border: 2px solid var(--chrome-light);
  border-right-color: var(--chrome-dark);
  border-bottom-color: var(--chrome-dark);
  font: 900 15px/1 var(--ui);
  cursor: pointer;
}

.window-controls button:hover,
.window-controls button:focus-visible,
.window-controls button[aria-expanded="true"] {
  position: relative;
  z-index: 1;
  color: var(--black);
  background: var(--lime);
  outline: 2px solid var(--black);
  outline-offset: -5px;
}

.window-controls button:active {
  border-color: var(--chrome-dark) var(--chrome-light) var(--chrome-light) var(--chrome-dark);
}

.menu-bar {
  display: flex;
  align-items: center;
  gap: 27px;
  padding: 0 13px;
  overflow-x: auto;
  color: var(--black);
  background: var(--chrome);
  border-top: 1px solid white;
  border-bottom: 2px solid var(--chrome-dark);
  white-space: nowrap;
  font: 11px/1 var(--ui);
}

.menu-bar a,
.menu-bar button {
  flex: 0 0 auto;
  padding: 0;
  color: inherit;
  background: transparent;
  border: 0;
  font: inherit;
  text-decoration: none;
  cursor: pointer;
}

.menu-site-link { margin-left: auto; }

.menu-bar a:hover,
.menu-bar a:focus-visible,
.menu-bar button:hover,
.menu-bar button:focus-visible,
.menu-bar button.is-active {
  color: var(--black);
  background: var(--lime);
  outline: 2px solid var(--black);
  outline-offset: 4px;
}

.popup-layer {
  position: absolute;
  z-index: 20;
  inset: 76px 0 28px;
  overflow: hidden;
  pointer-events: none;
}

.identity-popup {
  position: absolute;
  right: 18px;
  display: grid;
  grid-template-rows: 31px minmax(0, 1fr);
  width: min(390px, calc(100% - 28px));
  max-height: calc(100% - 24px);
  overflow: hidden;
  color: var(--ink);
  background: var(--chrome);
  border: 3px solid var(--chrome-light);
  border-right-color: var(--chrome-dark);
  border-bottom-color: var(--chrome-dark);
  box-shadow: inset 1px 1px white, inset -1px -1px rgba(0, 0, 0, .38), 10px 12px 0 rgba(0, 0, 0, .3), 18px 22px 44px rgba(0, 0, 0, .42);
  pointer-events: auto;
  animation: popup-open 150ms steps(3, end) both;
}

.identity-popup[hidden] { display: none; }
.popup-window-pause { top: 12px; width: min(350px, calc(100% - 28px)); }
.popup-window-welcome { top: 18px; }

@keyframes popup-open {
  from { opacity: 0; transform: translate(8px, 8px) scale(.975); }
  to { opacity: 1; transform: translate(0, 0) scale(1); }
}

.popup-titlebar {
  display: flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  padding-left: 5px;
  color: white;
  background: linear-gradient(90deg, #070e57, var(--blue-light));
  border-bottom: 2px solid var(--chrome-dark);
  font: 800 10px/1 var(--ui);
  letter-spacing: .04em;
}

.popup-icon {
  display: grid;
  width: 19px;
  height: 19px;
  place-items: center;
  flex: 0 0 auto;
  color: var(--black);
  background: var(--lime);
  border: 1px solid white;
  font: 900 9px/1 var(--serif);
}

.popup-titlebar strong {
  min-width: 0;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.popup-titlebar button {
  display: grid;
  width: 29px;
  height: 27px;
  padding: 0;
  place-items: center;
  flex: 0 0 auto;
  color: var(--black);
  background: var(--chrome);
  border: 2px solid var(--chrome-light);
  border-right-color: var(--chrome-dark);
  border-bottom-color: var(--chrome-dark);
  font: 900 17px/1 var(--ui);
  cursor: pointer;
}

.popup-titlebar button:active {
  border-color: var(--chrome-dark) var(--chrome-light) var(--chrome-light) var(--chrome-dark);
}

.popup-content {
  min-height: 0;
  padding: 18px;
  overflow: auto;
  border: 2px solid var(--chrome-dark);
  border-right-color: var(--chrome-light);
  border-bottom-color: var(--chrome-light);
  font-size: 12px;
  line-height: 1.58;
}

.popup-content p { margin: 0; overflow-wrap: break-word; word-break: keep-all; }
.popup-kicker { color: #263786; font: 8px/1.3 var(--ui); letter-spacing: .08em; }
.popup-lede { margin: 15px 0 13px !important; font: 700 clamp(25px, 5vw, 39px)/.94 var(--serif); letter-spacing: -.045em; }
.popup-status { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

.app-viewport {
  min-height: 0;
  overflow: auto;
  background: var(--chrome);
  scrollbar-color: var(--lime) var(--chrome-dark);
}

.app-viewport::-webkit-scrollbar { width: 16px; }
.app-viewport::-webkit-scrollbar-track { background: var(--chrome); border-left: 2px solid var(--chrome-dark); }
.app-viewport::-webkit-scrollbar-thumb { background: var(--lime); border: 3px solid var(--chrome); outline: 1px solid var(--black); }

.philosophy-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .72fr);
  gap: 30px;
  align-items: end;
  padding: 24px 27px 20px;
  border-bottom: 2px solid var(--chrome-dark);
}

.system-path,
.panel-label {
  margin: 0;
  color: #263786;
  font: 8px/1.35 var(--pixel);
  letter-spacing: .08em;
}

.philosophy-hero h1 {
  margin: 5px 0 0;
  font: 700 clamp(44px, 8vw, 86px)/.86 var(--serif);
  letter-spacing: -.08em;
}

.philosophy-hero h1 i { color: var(--blue); font-style: normal; }

.philosophy-hero > p {
  margin: 0;
  padding: 13px 0 2px 16px;
  border-left: 6px solid var(--lime);
  color: #303430;
  font-size: 12px;
  line-height: 1.65;
}

.workspace {
  display: grid;
  grid-template-columns: 180px minmax(320px, 1fr) minmax(280px, .72fr);
  gap: 7px;
  padding: 8px;
  background: var(--black);
}

.language-files,
.language-window,
.season-console {
  min-width: 0;
  background: var(--chrome);
  border: 2px solid var(--chrome-light);
  border-right-color: var(--chrome-dark);
  border-bottom-color: var(--chrome-dark);
}

.language-files { padding: 14px 10px; }
.language-files > .panel-label { margin: 0 4px 10px; }

.language-file {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 3px 8px;
  width: 100%;
  padding: 9px 7px;
  color: var(--ink);
  background: transparent;
  border: 1px solid transparent;
  text-align: left;
  cursor: pointer;
}

.language-file + .language-file { margin-top: 4px; }
.language-file:hover,
.language-file:focus-visible,
.language-file.is-active { color: white; background: var(--blue); border-color: var(--black); outline: 2px dotted var(--ivory); outline-offset: -5px; }

.file-icon {
  grid-row: 1 / 3;
  display: grid;
  width: 40px;
  height: 34px;
  place-items: center;
  color: var(--black);
  background: var(--lime);
  border: 2px solid var(--chrome-light);
  border-right-color: var(--chrome-dark);
  border-bottom-color: var(--chrome-dark);
  font: 900 15px/1 var(--serif);
}

.language-file strong { align-self: end; font: 900 11px/1 var(--ui); }
.language-file small { color: currentColor; opacity: .72; font: 6px/1 var(--pixel); }

.language-window,
.season-console { display: grid; grid-template-rows: 29px minmax(0, 1fr); }
.subwindow-titlebar { padding-left: 7px; }
.subwindow-titlebar span { display: grid; width: 28px; align-self: stretch; place-items: center; color: var(--black); background: var(--chrome); border-left: 2px solid var(--chrome-light); }

.language-content {
  display: grid;
  grid-template-columns: minmax(115px, .62fr) minmax(0, 1fr);
  gap: 17px;
  min-height: 310px;
  padding: 17px;
  border: 2px solid var(--chrome-dark);
  border-right-color: var(--chrome-light);
  border-bottom-color: var(--chrome-light);
}

.language-glyph {
  position: relative;
  display: grid;
  min-height: 220px;
  place-items: center;
  overflow: hidden;
  color: var(--accent);
  background:
    linear-gradient(rgba(209, 229, 154, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(209, 229, 154, .09) 1px, transparent 1px),
    var(--black);
  background-size: 13px 13px;
  border: 2px solid var(--chrome-dark);
  font: 700 clamp(78px, 12vw, 140px)/1 var(--serif);
  text-shadow: 6px 6px 0 var(--blue);
}

.language-glyph::after {
  position: absolute;
  top: -20%;
  left: -90%;
  width: 45%;
  height: 140%;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(241, 240, 233, .16), transparent);
  transform: skewX(-18deg);
  animation: glyph-scan 5s steps(12, end) infinite;
}

@keyframes glyph-scan { to { left: 145%; } }

.language-copy { align-self: center; min-width: 0; }
.language-copy h2 { margin: 8px 0 12px; font: 700 clamp(30px, 4vw, 48px)/1 var(--serif); }
.language-definition { margin: 0; font-size: 12px; line-height: 1.62; }

.language-reading { margin: 17px 0 0; border: 1px solid var(--chrome-dark); }
.language-reading div { display: grid; grid-template-columns: 72px 1fr; border-bottom: 1px solid var(--chrome-mid); }
.language-reading div:last-child { border-bottom: 0; }
.language-reading dt,
.language-reading dd { margin: 0; padding: 7px; font: 8px/1.3 var(--ui); }
.language-reading dt { color: var(--lime); background: var(--black); }

.season-content { padding: 14px; border: 2px solid var(--chrome-dark); border-right-color: var(--chrome-light); border-bottom-color: var(--chrome-light); }

.season-buttons { display: grid; grid-template-columns: repeat(4, 1fr); margin: 10px 0 12px; }
.season-buttons button {
  min-width: 0;
  padding: 7px 2px;
  color: var(--black);
  background: var(--chrome);
  border: 2px solid var(--chrome-light);
  border-right-color: var(--chrome-dark);
  border-bottom-color: var(--chrome-dark);
  font: 900 9px/1 var(--ui);
  cursor: pointer;
}
.season-buttons small { font: 7px/1 var(--pixel); }
.season-buttons button:hover,
.season-buttons button:focus-visible,
.season-buttons button.is-active { color: var(--lime); background: var(--blue); outline: 1px solid var(--black); outline-offset: -4px; }

.season-visual {
  position: relative;
  height: 103px;
  overflow: hidden;
  background: var(--black);
  border: 1px solid var(--black);
}

.season-visual i { position: absolute; display: block; width: 28px; height: 28px; background: var(--accent); animation: season-pixels 4.5s steps(6, end) infinite alternate; }
.season-visual i:nth-child(1) { top: 12px; left: 15%; }
.season-visual i:nth-child(2) { top: 41px; left: 34%; animation-delay: -.8s; }
.season-visual i:nth-child(3) { top: 15px; right: 24%; animation-delay: -1.7s; }
.season-visual i:nth-child(4) { right: 10%; bottom: 9px; animation-delay: -2.5s; }
.season-visual span { position: absolute; right: 9px; bottom: 2px; color: var(--ivory); font: 900 44px/.9 var(--ui); }
@keyframes season-pixels { to { transform: translate(8px, 9px); opacity: .28; } }

.season-name { margin: 11px 0 4px; color: #263786; font: 8px/1 var(--pixel); letter-spacing: .08em; }
.season-content h2 { margin: 0 0 5px; font: 700 22px/1.12 var(--serif); }
.season-tags { margin: 0; color: #4e564b; font: 7px/1.3 var(--pixel); }
.season-description { margin: 11px 0 0; font-size: 10px; line-height: 1.5; }

.system-reading {
  margin: 0;
  padding: 20px 26px 23px;
  color: var(--ivory);
  background: var(--black);
  border-top: 2px solid var(--chrome-light);
}

.system-reading .panel-label { color: var(--lime); }
.system-reading h2 { margin: 8px 0 15px; font: 400 clamp(20px, 3.4vw, 38px)/1.16 var(--serif); }
.system-reading h2 span { color: var(--lime); }

.reading-flow { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; border: 1px solid #545954; }
.reading-flow span { display: grid; grid-template-columns: 38px 1fr; align-items: center; gap: 8px; min-height: 55px; padding: 8px 12px; }
.reading-flow b { color: var(--lime); font: 900 17px/1 var(--ui); }
.reading-flow small { color: var(--ivory); font-size: 9px; line-height: 1.35; }
.reading-flow i { color: var(--lime); font: normal 15px/1 var(--ui); }

.philosophy-actions { display: flex; gap: 8px; padding: 12px 10px 16px; color: var(--black); background: var(--chrome); }
.philosophy-actions a { flex: 1; padding: 10px; color: inherit; background: var(--chrome); border: 2px solid var(--chrome-light); border-right-color: var(--chrome-dark); border-bottom-color: var(--chrome-dark); text-align: center; text-decoration: none; font: 8px/1.2 var(--pixel); }
.philosophy-actions a:hover,
.philosophy-actions a:focus-visible { color: var(--black); background: var(--lime); outline: 2px solid var(--black); outline-offset: -5px; }

.status-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 0 7px; color: #303430; background: var(--chrome); border-top: 2px solid var(--chrome-light); font: 7px/1 var(--pixel); }

@media (hover: hover) and (pointer: fine) {
  .app-shell { cursor: url("../identity-concept-v3-retro-motion/assets/cursor-scissors-pixel.svg?v=20261010-16") 4 18, default; }
  .app-shell a,
  .app-shell button,
  .app-shell a *,
  .app-shell button * { cursor: url("../identity-concept-v3-retro-motion/assets/cursor-hand-pixel.svg") 15 2, pointer; }
}

@media (max-width: 840px) {
  .retro-stage { display: block; min-height: 100svh; padding: 0; }
  .stage-note, .stage-grid { display: none; }
  .app-shell { width: 100%; height: 100svh; min-height: 560px; border: 0; box-shadow: none; grid-template-rows: 36px 36px minmax(0, 1fr) 28px; }
  .popup-layer { inset: 72px 0 28px; }
  .identity-popup,
  .popup-window-pause,
  .popup-window-welcome { right: auto; left: 10px; width: calc(100% - 20px); max-height: calc(100% - 18px); }
  .popup-window-pause { top: 8px; }
  .popup-window-welcome { top: 14px; }
  .popup-content { padding: 14px; }
  .philosophy-hero { grid-template-columns: 1fr; gap: 8px; padding: 18px 15px 15px; }
  .philosophy-hero h1 { font-size: clamp(46px, 15vw, 74px); }
  .philosophy-hero > p { font-size: 11px; }
  .workspace { grid-template-columns: 1fr; }
  .language-files { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 5px; overflow: hidden; }
  .language-files > .panel-label { grid-column: 1 / -1; }
  .language-file { width: auto; min-width: 0; grid-template-columns: 34px minmax(0, 1fr); padding: 7px 5px; overflow: hidden; }
  .language-file strong,
  .language-file small { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .language-file + .language-file { margin-top: 0; }
  .file-icon { width: 32px; height: 30px; }
  .language-content { min-height: 280px; }
  .season-console { min-height: 360px; }
  .menu-site-link { margin-left: 0; }
}

@media (max-width: 520px) {
  .window-controls button { width: 36px; }
  .menu-bar { gap: 20px; }
  .language-file { grid-template-columns: 1fr; text-align: center; }
  .file-icon { grid-row: auto; margin: auto; }
  .language-content { grid-template-columns: 1fr; }
  .language-glyph { min-height: 150px; }
  .language-copy h2 { font-size: 32px; }
  .reading-flow { grid-template-columns: 1fr; }
  .reading-flow i { padding-left: 22px; transform: rotate(90deg); }
  .philosophy-actions { flex-direction: column; }
  .status-bar span:nth-child(2) { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; scroll-behavior: auto !important; }
}