:root {
  color-scheme: dark;
  --bg: #141719;
  --surface: #202427;
  --raised: #2b3034;
  --line: #373d42;
  --text: #e9edef;
  --muted: #a5adb3;
  --accent: #d7e0e4;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
button:disabled { opacity: .45; cursor: default; }
[hidden] { display: none !important; }
.site-header, .workspace { width: 100%; max-width: 1920px; margin: 0 auto; padding: 0 24px; }
.site-header { min-height: 56px; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-top: 12px; padding-bottom: 12px; }
.brand { font-size: .9375rem; font-weight: 500; letter-spacing: -.02em; color: var(--muted); }
.brand:hover { color: var(--text); }
.quiet-link { font-size: .875rem; color: var(--muted); text-underline-offset: 4px; }
.quiet-link:hover { color: var(--text); text-decoration: underline; }
.quiet-link span { margin-left: 3px; }
.workspace { height: calc(100dvh - 56px); min-height: 536px; display: flex; flex-direction: column; }
.world-header { display: flex; justify-content: space-between; align-items: center; gap: 16px 32px; min-height: 64px; padding-bottom: 16px; flex-shrink: 0; }
.world-heading { display: flex; align-items: center; gap: 8px; min-width: 0; }
.world-heading h1 { margin: 0; font-size: 1.125rem; line-height: 1.45; font-weight: 500; letter-spacing: -.025em; }
.prompt-trigger { position: relative; display: grid; place-items: center; flex: 0 0 36px; width: 36px; height: 40px; padding: 0; border: 0; border-radius: 4px; background: none; color: var(--muted); }
.prompt-trigger:hover, .prompt-trigger:focus-visible { color: var(--text); background: var(--surface); }
.control-hint { position: absolute; top: calc(100% + 6px); left: 50%; transform: translateX(-50%); z-index: 6; white-space: nowrap; border: 1px solid var(--line); border-radius: 4px; padding: 7px 10px; background: var(--surface); color: var(--text); font-size: .8125rem; visibility: hidden; pointer-events: none; }
.prompt-trigger:hover .control-hint, .prompt-trigger:focus-visible .control-hint { visibility: visible; }
.models, .iterations { list-style: none; padding: 0; margin: 0; }
.models { display: flex; gap: 8px; align-items: stretch; }
.model-entry { display: flex; align-items: stretch; min-width: 0; }
.build-choice { position: relative; display: flex; align-items: center; justify-content: center; gap: 6px; min-height: 44px; padding: 10px 16px; border: 0; border-radius: 4px; background: transparent; color: var(--muted); text-align: center; font-size: .9375rem; font-weight: 400; line-height: 1.4; white-space: nowrap; }
.build-choice:hover { color: var(--text); background: var(--surface); }
.build-choice[aria-current=true], .build-choice.is-family { color: var(--text); }
.build-choice[aria-current=true]::after, .build-choice.is-family::after { content: ""; position: absolute; bottom: 1px; left: 16px; right: 16px; height: 2px; background: var(--accent); }
.model-name { color: var(--muted); }
.astra-group { position: relative; }
.astra-group > .build-choice { padding-right: 8px; }
.astra-group > .build-choice::after { right: 8px; }
.iteration-disclosure > summary { display: grid; place-items: center; width: 32px; height: 100%; min-height: 44px; border-radius: 4px; cursor: pointer; color: var(--muted); list-style: none; }
.iteration-disclosure > summary:hover, .iteration-disclosure[open] > summary { background: var(--surface); color: var(--text); }
summary::-webkit-details-marker { display: none; }
.chevron { display: inline-block; width: 6px; height: 6px; flex: 0 0 6px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: translateY(-2px) rotate(45deg); }
.iteration-disclosure[open] > summary .chevron { transform: translateY(1px) rotate(225deg); }
.iterations { position: absolute; z-index: 5; right: 0; top: calc(100% + 10px); width: 288px; max-width: calc(100vw - 32px); max-height: min(560px, 70dvh); overflow: auto; scrollbar-width: thin; padding: 8px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); box-shadow: 0 12px 40px #0006; }
.iteration-heading { padding: 10px 12px 12px; color: var(--muted); font-size: .8125rem; }
.iteration-choice { width: 100%; padding: 10px 12px; border: 0; border-radius: 4px; background: transparent; text-align: left; line-height: 1.5; }
.iteration-choice:hover, .iteration-choice[aria-current=true] { background: var(--raised); }
.iteration-title { display: block; font-size: .875rem; }
.iteration-label { display: block; font-size: .75rem; color: var(--muted); margin-top: 2px; }
.player { flex: 1; min-height: 0; min-width: 0; display: flex; flex-direction: column; }
.stage { position: relative; flex: 1; min-height: 400px; border-radius: 4px; overflow: hidden; background: #101315; }
.stage iframe { border: 0; position: absolute; inset: 0; width: 100%; height: 100%; display: block; background: #101315; }
.stage:fullscreen { border-radius: 0; width: 100%; height: 100%; }
.loading { position: absolute; z-index: 2; inset: 0; display: grid; place-content: center; text-align: center; padding: 24px; color: var(--muted); font-size: 1rem; line-height: 1.6; background: #101315; pointer-events: none; }
.player-footer { position: relative; min-height: 56px; flex-shrink: 0; display: flex; align-items: center; gap: 16px; }
.player-actions { display: flex; gap: 4px; margin-left: auto; flex-shrink: 0; }
.action-button { min-height: 44px; padding: 10px 12px; border: 0; border-radius: 4px; background: transparent; font-size: .875rem; color: var(--muted); }
.action-button:last-child { margin-right: -12px; }
.action-button:hover { color: var(--text); background: var(--surface); }
.build-info { min-width: 0; color: var(--muted); }
.build-info > summary { display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 10px 0; font-size: .875rem; line-height: 1.5; cursor: pointer; list-style: none; }
.build-info > summary:hover { color: var(--text); }
.build-info > summary .chevron { transform: translateY(1px) rotate(225deg); }
.build-info[open] > summary .chevron { transform: translateY(-2px) rotate(45deg); }
.build-state { font-size: .8125rem; color: var(--muted); }
.build-state:empty { display: none; }
.build-state.draft { color: #e2bd8e; }
.build-notes { position: absolute; z-index: 5; bottom: calc(100% + 8px); left: 0; width: min(520px, 100%); max-height: min(440px, 60dvh); overflow: auto; scrollbar-width: thin; padding: 24px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); box-shadow: 0 12px 40px #0006; font-size: 1rem; line-height: 1.65; color: var(--text); }
.build-notes h2 { font-size: 1.125rem; line-height: 1.5; font-weight: 500; margin: 0 0 4px; }
.build-notes p { margin: 16px 0; }
.build-notes .result-meta { font-size: .8125rem; color: var(--muted); margin: 0 0 20px; }
.build-notes #controls { font-size: .875rem; color: var(--muted); }
.notes-footer { display: flex; justify-content: space-between; gap: 20px; font-size: .8125rem; color: var(--muted); }
.build-notes .archive-date { font-size: .75rem; color: var(--muted); margin: 16px 0 0; }
.prompt-dialog { width: min(800px, calc(100% - 32px)); max-height: 85dvh; margin: auto; padding: 0; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--text); box-shadow: 0 24px 80px #0005; }
.prompt-dialog[open] { display: flex; flex-direction: column; }
.prompt-dialog::backdrop { background: #0a0e12bd; }
.prompt-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; padding: 24px 28px; border-bottom: 1px solid var(--line); flex-shrink: 0; }
.prompt-header h2 { font-size: 1.125rem; font-weight: 500; margin: 0; }
.prompt-context { font-size: .875rem; line-height: 1.6; color: var(--muted); margin: 6px 0 0; }
.prompt-close { border: 0; background: transparent; border-radius: 4px; padding: 10px 14px; font-size: .875rem; color: var(--muted); }
.prompt-close:hover { background: var(--raised); color: var(--text); }
.prompt-body { padding: 8px 28px 28px; overflow: auto; font-size: 1rem; line-height: 1.75; overscroll-behavior: contain; }
.prompt-body p { margin: 20px 0; }
.prompt-body h3 { font-size: .875rem; line-height: 1.65; font-weight: 500; color: var(--accent); margin: 32px 0 12px; }
.prompt-body ul { padding-left: 22px; margin: 0; }
.prompt-body li { padding-left: 4px; margin: 12px 0; }
.prompt-source a { font-size: .875rem; color: var(--muted); text-decoration: underline; text-underline-offset: 4px; }
noscript { display: block; padding: 24px; }
@media (max-width: 800px) {
  .site-header, .workspace { padding-left: 16px; padding-right: 16px; }
  .site-header { min-height: 48px; }
  .brand { font-size: .875rem; }
  .workspace { height: calc(100dvh - 48px); min-height: 576px; }
  .world-header { flex-direction: column; align-items: stretch; gap: 8px; padding-bottom: 12px; }
  .world-heading { justify-content: space-between; }
  .world-heading h1 { font-size: 1.0625rem; }
  .control-hint { left: auto; right: 0; transform: none; }
  .models { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px; }
  .build-choice { flex: 1; min-width: 0; font-size: .875rem; padding: 10px 8px; gap: 4px; flex-wrap: wrap; }
  .build-choice[aria-current=true]::after, .build-choice.is-family::after { left: 8px; right: 8px; }
  .astra-group > .build-choice { padding-right: 0; }
  .model-name { font-size: .875rem; }
  .iteration-disclosure > summary { width: 28px; }
  .player-footer { gap: 8px; flex-wrap: wrap; padding: 4px 0; }
  .build-info { flex: 1; }
  .build-state { order: 3; flex-basis: 100%; padding-bottom: 8px; }
  .action-button { padding: 10px 8px; }
  .action-button:last-child { margin-right: -8px; }
  .build-notes { padding: 20px; }
  .prompt-header { padding: 18px; gap: 12px; }
  .prompt-body { padding: 4px 18px 20px; }
}
@media (prefers-reduced-motion: no-preference) {
  button, a, summary { transition: background-color 120ms ease, color 120ms ease; }
}