:root {
  color-scheme: light;
  --paper: #fff;
  --ink: #000;
  --rule: #d9d9d9;
  --rule-soft: #ececec;
  --mute: #6b6b6b;
  --sans: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
}

/* Page and control colors share the paper and ink variables. */
:root[data-theme="dark"],
:root[data-fullscreen] {
  color-scheme: dark;
  --paper: #000;
  --ink: #fff;
  --rule: #333;
  --rule-soft: #222;
  --mute: #9a9a9a;
}

body { background: var(--paper); color: var(--ink); }
a { color: var(--ink); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-color: var(--mute); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 5; padding: 8px 12px; background: var(--paper); transform: translateY(calc(-100% - 12px)); }
.skip-link:focus { transform: none; }

body, .stage, .gml-transport .rail, .gml-transport .fill {
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}


/* Shared masthead for the demo and its embed gallery. */
.mode-row { display: grid; gap: 12px; margin-top: 16px; }
.topbar { display: flex; justify-self: end; gap: 4px; }

/* Match the demo's stage and right-hand settings column. */
@media (min-width: 1000px) {
  .mode-row {
    grid-template-columns: minmax(0, 1fr) var(--stage, 560px) minmax(0, 1fr);
    gap: 8px 24px;
    align-items: center;
  }
  .mode-row .renderers { grid-column: 2; }
  .mode-row .topbar { grid-column: 3; grid-row: 1; justify-self: start; }
}

#theme,
#fullscreen,
#controls {
  position: relative;
  width: 30px; height: 30px; padding: 0;
  display: grid; place-items: center;
  background: none; border: 1px solid transparent; border-radius: 4px;
  color: var(--mute); cursor: pointer;
}
#theme:hover,
#fullscreen:hover,
#controls:hover { color: var(--ink); border-color: var(--rule); }
#theme svg,
#fullscreen svg,
#controls svg {
  grid-area: 1 / 1;
  width: 16px; height: 16px;
  transition: opacity .2s ease, transform .3s cubic-bezier(.4, 0, .2, 1);
}
/* Both icons reserve the same space while the inactive one rotates away. */
#theme .moon { opacity: 0; transform: rotate(-90deg) scale(.5); }
:root[data-theme="dark"] #theme .sun { opacity: 0; transform: rotate(90deg) scale(.5); }
:root[data-theme="dark"] #theme .moon { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  body, .stage, #theme svg, #fullscreen svg, #controls svg { transition: none; }
}

.masthead { text-align: center; margin-bottom: 26px; }

.masthead h1 {
  margin: 0;
  font-size: clamp(1.9rem, 5.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1;
}

.masthead h1 a { color: inherit; text-decoration: none; }

/* Renderer links reload because canvas context types cannot change. */
.renderers {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 0;
  font: 600 16px/1.4 var(--sans);
}
.renderers a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  color: var(--ink);
  text-decoration: none;
}
.renderers a:hover { border-color: var(--ink); }
/* Selection must not widen a label when the renderer finishes loading. */
.renderers a[aria-current] {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.tagline {
  margin: 12px auto 0;
  max-width: 72ch;
  font: 400 15px/1.6 var(--sans);
  color: var(--mute);
}

/* Larger controls on the demo site, without changing library defaults. */
.gml-transport button, .gml-transport .clock { font-size: 13px; }
.gml-switches button, .gml-switches .about { font-size: 14px; }
.gml-switches .label { font-size: 12px; }
.gml-switches .row { grid-template-columns: 84px minmax(0, 1fr); }