:root {
  color-scheme: light;
  --paper: #f3f2ee;
  --ink: #202a2c;
  --secondary: #455458;
  --rule: #a9b4b5;
  --accent: #155d57;
  --focus: #126dbe;
  font: 16px/1.55 system-ui, sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); }
main { width: 100%; margin: 0 auto; padding: 1.5rem 0 2rem; }
header { max-width: 72ch; margin: 0 auto 2.5rem; }
.import-panel,
.configuration-panel,
footer,
.preview-heading { width: min(100% - 2rem, 72rem); margin-inline: auto; }
h1 { margin: 0; font-size: clamp(2.5rem, 6vw, 4rem); line-height: 1.08; letter-spacing: -.035em; }
h2 { margin: 0 0 .65rem; font-size: 1.5rem; line-height: 1.25; }
p { margin: .65rem 0 1.25rem; max-width: 72ch; }
.lead { margin: 1rem 0; font-size: 1.4rem; line-height: 1.35; }
.import-panel { padding: 1.75rem 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.file-label { display: block; font-weight: 650; margin: 1rem 0 .4rem; }
input[type=file] { display: block; max-width: 100%; padding: .5rem 0; font: inherit; color: var(--ink); }
button, input::file-selector-button { font: inherit; min-height: 44px; padding: .6rem 1rem; border: 1px solid var(--accent); border-radius: 4px; background: transparent; color: var(--accent); cursor: pointer; }
input::file-selector-button { margin-right: .75rem; }
#iso-import, #demo-start { background: var(--accent); color: #fff; }
button:hover:not(:disabled), input::file-selector-button:hover { background: #dbe8e3; color: var(--ink); }
#iso-import:hover:not(:disabled), #demo-start:hover:not(:disabled) { background: #104943; color: #fff; }
button:disabled { opacity: .55; cursor: not-allowed; }
select { min-height: 44px; max-width: 100%; padding: .6rem; font: inherit; color: var(--ink); background: var(--paper); border: 1px solid var(--rule); border-radius: 4px; }
.edition-label { display: flex; flex-direction: column; gap: .3rem; font-size: .9rem; }
.actions { display: flex; flex-wrap: wrap; gap: .65rem; margin: .85rem 0; }
#iso-candidates { display: flex; flex-direction: column; gap: .5rem; overflow-wrap: anywhere; }
#iso-candidates label { padding: .4rem 0; }
input[type=checkbox] { width: 1.1rem; height: 1.1rem; accent-color: var(--accent); vertical-align: middle; }
#iso-progress { display: block; margin: 1rem 0; font-weight: 600; overflow-wrap: anywhere; }
.loading-block { margin: 1.25rem 0; max-width: 42rem; }
.loading-block label { display: block; margin-bottom: .45rem; font-weight: 600; }
.loading-block progress { display: block; width: 100%; height: 1rem; accent-color: var(--accent); }
.loading-block progress[hidden] { display: none; }
.loading-block output { display: block; margin: .5rem 0; font-size: .9rem; color: var(--secondary); overflow-wrap: anywhere; }
.loading-block output[data-state="error"] { color: #922d16; }
.hint, footer { color: var(--secondary); font-size: .9rem; }
details { margin-top: 1rem; }
summary { width: fit-content; min-height: 44px; padding: .5rem 0; cursor: pointer; text-decoration: underline; text-underline-offset: .2em; }
pre, #log { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 20rem; overflow: auto; }
pre { font-size: .8rem; }
#log { padding-left: 1.4rem; font-size: .9rem; }
#log .bad { color: #922d16; }
.preview { margin-top: 2.5rem; width: 100%; }
.preview-heading { display: flex; justify-content: space-between; align-items: start; flex-wrap: wrap; gap: .5rem 2rem; }
.preview-heading .hint { margin-bottom: .6rem; }
#stage { position: relative; overflow: hidden; display: grid; grid-template: minmax(0, 1fr) / minmax(0, 1fr); width: 100%; height: 100vh; height: 100dvh; min-height: 300px; background: #101719; color: #fff; }
#launcher-canvas, .intro-player { grid-area: 1 / 1; min-width: 0; min-height: 0; }
#launcher-canvas { position: absolute; left: 0; top: 0; transform-origin: top left; display: block; width: 100%; height: 100%; }
#launcher-canvas[hidden] { visibility: hidden; }
#stage[data-preview-size="actual"] { overflow: auto; }
#stage[data-preview-size="actual"] #launcher-canvas { touch-action: pan-x pan-y !important; }
#stage:fullscreen { width: 100vw; height: 100vh; }
footer { margin-top: 1.5rem; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; }
::selection { background: #b8d7ce; color: var(--ink); }
* { scrollbar-color: var(--secondary) var(--paper); scrollbar-width: thin; }
.skip { position: absolute; top: .75rem; left: 1rem; padding: .5rem; background: var(--paper); color: var(--accent); transform: translateY(-180%); }
.skip:focus { transform: translateY(0); }
@media (max-width: 600px) {
  main { width: 100%; padding-top: 1rem; }
  header { margin-bottom: 1.75rem; }
  .import-panel { padding: 1.25rem 0; }
  .preview { margin-top: 1.75rem; }
  #stage { height: 100vh; height: 100dvh; min-height: 280px; }
  .actions button { flex: 1 1 auto; }
}

#demo-placeholder { grid-area: 1 / 1; align-self: center; justify-self: center; padding: 1.5rem; text-align: center; color: #bdcecc; }

.configuration-panel { margin-top: 0; padding: 1.75rem 0; border-bottom: 1px solid var(--rule); }
.configuration-panel output { display: block; overflow-wrap: anywhere; }
.configuration-fields { display: flex; flex-wrap: wrap; align-items: end; gap: .65rem; margin: .85rem 0; }
.configuration-fields label { display: flex; flex-direction: column; gap: .3rem; }
.configuration-panel input[type=text] { min-height: 44px; max-width: 100%; padding: .6rem; border: 1px solid var(--secondary); border-radius: 4px; font: inherit; color: var(--ink); background: var(--paper); }
.configuration-panel input:disabled { opacity: .55; cursor: not-allowed; }
@media (max-width: 600px) { .configuration-panel { padding: 1.25rem 0; } }