/*
 * FAD Records Web Design Constitution
 * Binding canonical layer for the public static FAD OS site.
 * Semantic proximity: control < related < group < section.
 */

:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 40px;
  --space-8: 48px;
  --space-9: 64px;
  --space-10: 96px;
  --gap-control: var(--space-2);
  --gap-related: var(--space-3);
  --gap-group: var(--space-5);
  --gap-cluster: var(--space-6);
  --gap-section: var(--space-9);
  --gap-flagship: var(--space-10);

  --container-reading: 800px;
  --container-doc: 940px;
  --container-product: 1120px;
  --container-workbench: 1180px;
  --page-gutter: 32px;
  --target: 44px;

  --type-flagship: 96px;
  --type-editorial: 56px;
  --type-index: 48px;
  --type-utility: 32px;
  --type-state: 26px;
  --type-section: 32px;
  --type-lede: 20px;
  --type-body: 16px;
  --leading-display: 1.06;
  --leading-title: 1.12;
  --leading-body: 1.7;

  --bar-h: 44px;
}

@media (max-width: 780px) {
  :root {
    --page-gutter: 16px;
    --type-flagship: 48px;
    --type-editorial: 36px;
    --type-index: 34px;
    --type-utility: 30px;
    --type-section: 27px;
    --type-lede: 18px;
  }
}

@media (max-width: 360px) {
  :root { --page-gutter: 12px; }
}

/* Content overflow stays observable; only decorative/game canvases may clip. */
body { overflow-x: visible; }
.doc-stage,
.doc-window,
.doc-body,
.data-table .row,
.spec .srow,
.card { min-width: 0; }
.doc-body :where(a, code, p, li, dd),
.doc-footer :where(a, span) {
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* Shared chrome and reliable targets. */
.menubar .brand,
.menubar nav a,
.menubar .sys > *,
.sysmenu .mi,
.viewmenu .mi {
  min-height: var(--target);
}
.btn {
  min-height: var(--target);
  gap: var(--gap-control);
}
.titlebar .win-btn {
  position: relative;
}
.titlebar .win-btn::before {
  content: "";
  position: absolute;
  inset: -14px;
}
.titlebar {
  min-width: 0;
  overflow: hidden;
}
.titlebar .title {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.titlebar .win-btns {
  flex: 0 0 auto;
}
.nav-menu-btn,
.lang-switch,
.menubar .sys .shiny-entry {
  min-width: var(--target);
  height: var(--target);
  min-height: var(--target);
}
.theme-switcher {
  gap: 2px;
  padding-inline: 2px;
}
.theme-switcher button {
  width: var(--target);
  height: var(--target);
}
.resize-handle {
  width: var(--target);
  height: var(--target);
}
.resize-handle::before {
  top: auto;
  left: auto;
  right: 2px;
  bottom: 2px;
  width: 16px;
  height: 16px;
}

/* Document family: one container, one discrete type hierarchy. */
.doc-stage {
  min-height: 100svh;
  padding: calc(var(--bar-h) + var(--space-6)) var(--page-gutter) var(--gap-section);
}
.doc-window {
  display: flex;
  flex-direction: column;
  width: min(var(--container-doc), 100%);
  min-height: calc(100svh - var(--bar-h) - var(--gap-section) - var(--space-6));
}
.doc-body {
  flex: 1 0 auto;
  padding: var(--space-8) var(--gap-section);
}
.doc-body .kicker { margin-bottom: var(--space-4); }
.doc-body h1 {
  margin-bottom: var(--space-5);
  font-size: var(--type-editorial);
  line-height: var(--leading-display);
  letter-spacing: 0;
}
.doc-body .lede {
  margin-bottom: var(--space-5);
  font-size: var(--type-lede);
}
.doc-body .actions {
  gap: var(--gap-related);
  margin: var(--gap-group) 0 0;
}
.doc-section { margin-top: var(--gap-section); }
.doc-section > h2 {
  margin: var(--space-4) 0 var(--space-3);
  font-size: var(--type-section);
}
.doc-section > p {
  font-size: var(--type-body);
  line-height: var(--leading-body);
}
.card-grid,
.fig-grid {
  gap: var(--space-4);
  margin-top: var(--space-5);
}
.card { padding: var(--space-4); }
.data-table,
.spec,
.doc-fig,
.term { margin-top: var(--space-5); }
.doc-footer {
  margin-top: auto;
  padding: var(--space-3) var(--gap-section);
  gap: var(--gap-control) var(--space-5);
}
.doc-footer .links {
  gap: var(--gap-control) var(--space-4);
}
.doc-footer a {
  display: inline-flex;
  min-height: var(--target);
  min-width: var(--target);
  align-items: center;
  justify-content: center;
}
.demo-btn {
  min-height: var(--target);
}

/* The desktop README is an index title, not an arbitrary one-off size. */
body.home #win-hello h1 {
  font-size: var(--type-index) !important;
  line-height: var(--leading-display);
}

/*
 * A Dark Room keeps a 200px notification rail, a 20px gutter, and a 700px
 * logical game board in its engine. Preserve that hierarchy as a 920px canvas
 * and fit it proportionally. JS supplies --darkroom-scale and compensates
 * hit targets after scaling.
 */
html:has(body.fad-darkroom-page),
body.fad-darkroom-page {
  width: 100%;
  height: auto;
  min-height: 100%;
}
body.fad-darkroom-page {
  --darkroom-scale: 1;
  --darkroom-hit: var(--target);
  overflow-x: hidden;
  overflow-y: auto;
}
body.fad-darkroom-page div#wrapper {
  width: 700px !important;
  min-height: 700px;
  margin: 0 auto;
  padding: var(--space-5) 0 0 220px !important;
  box-sizing: content-box;
  zoom: var(--darkroom-scale);
}
body.fad-darkroom-page div#content,
body.fad-darkroom-page div#outerSlider > div,
body.fad-darkroom-page div.location {
  width: 700px !important;
}
body.fad-darkroom-page .button {
  min-height: var(--darkroom-hit);
}
body.fad-darkroom-page .menu span {
  display: inline-flex;
  min-height: var(--darkroom-hit);
  align-items: center;
}

@media (max-width: 1279px) {
  .doc-stage {
    padding: calc(var(--bar-h) + var(--space-4)) var(--page-gutter) var(--gap-section);
  }
  .titlebar .win-btn {
    width: var(--target);
    height: var(--target);
  }
  .titlebar .win-btn::before { inset: 0; }
}

@media (max-width: 620px) {
  .doc-body {
    padding: var(--space-5) var(--page-gutter) var(--space-6);
  }
  .doc-footer {
    padding-inline: var(--page-gutter);
  }
}

@media (max-width: 760px) {
  body.fad-darkroom-page div#wrapper,
  body.fad-darkroom-page .button,
  body.fad-darkroom-page .tooltip,
  body.fad-darkroom-page select.menuBtn,
  body.fad-darkroom-page div.headerButton {
    font-size: var(--darkroom-font, 28px) !important;
  }
}