/* The start-up every VGraphics product opens with (D:\Projects\Mine\CLAUDE.md, "Start-up"), as a piece the site's web
   versions share (assets/startup/startup.js): a plain dark launch, the VGraphics intro, then the product's welcome art
   with the squishy loading bar for at least 2 s and until the product is ready. It fills the element it is mounted in
   (a try page's phone screen). The bar is Exitwise's web loader's, in the product's colours: a pill on a darker lip
   with a groove, and in the groove a fat arrow that grows to the right. Each product sets the --startup-* colours. */
.vg-startup {
  --startup-bg: #0A090D;
  --startup-track: #1F1F22;
  --startup-lip: #34343A;
  --startup-groove: #0B0B0C;
  --startup-fill: var(--accent, #F04A2C);
  --startup-fill-edge: color-mix(in srgb, var(--startup-fill) 70%, #000);
  --startup-ink: #ECECEE;
  position: absolute;
  inset: 0;
  z-index: 5;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: max(9%, 32px);
  background: var(--startup-bg);
  color: var(--startup-ink);
  font: var(--label-weight, 600) 1rem/1.2 var(--label-font, system-ui, sans-serif);
  text-transform: var(--label-case, none);
  letter-spacing: var(--label-tracking, 0.04em);
  transition: opacity 0.4s;
}
.vg-startup.done { opacity: 0; pointer-events: none; }

/* The welcome art fills the screen and fades in once it can be drawn, settling from a touch larger. */
.vg-startup-art { position: absolute; inset: 0; opacity: 0; transition: opacity 0.3s; }
.vg-startup-art img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.vg-startup-art::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 40%;
  background: linear-gradient(rgba(10, 9, 13, 0), rgba(10, 9, 13, 0.7));
}
.vg-startup.with-art .vg-startup-art { opacity: 1; }
.vg-startup.settle .vg-startup-art img { animation: vg-startup-settle 1.6s cubic-bezier(0.23, 1, 0.32, 1) both; }
@keyframes vg-startup-settle { from { transform: scale(1.04); } to { transform: scale(1); } }

/* The VGraphics intro over everything, a square film on the launch colour, so it letterboxes without a seam. */
.vg-startup-intro { position: absolute; inset: 0; z-index: 2; background: var(--startup-bg); transition: opacity 0.5s cubic-bezier(0.23, 1, 0.32, 1); }
.vg-startup-intro.quick { transition-duration: 0.3s; }
.vg-startup-intro.gone { opacity: 0; pointer-events: none; }
.vg-startup-intro video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }

/* The bar: --t is the arrow's thickness, --lead its length at 0% (a round tail and the head); the script slides the body
   and the head together along the rest of the groove, by transform only. */
.vg-startup-bar {
  --h: clamp(24px, 6cqh, 38px);
  --lip: calc(var(--h) * 0.1);
  --pad: calc(var(--h) * 0.17);
  --t: calc(var(--h) - var(--lip) - 2 * var(--pad));
  --hl: calc(var(--t) * 1.1);
  --lead: calc(var(--hl) + var(--t) / 2);
  position: relative;
  z-index: 1;
  width: min(78%, 360px);
  height: var(--h);
}
.vg-startup { container-type: size; }
.vg-startup .bar-shadow {
  position: absolute;
  left: 5%;
  right: 5%;
  bottom: calc(var(--h) * -0.3);
  height: calc(var(--h) * 0.6);
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(0, 0, 0, 0.45), rgba(0, 0, 0, 0));
}
.vg-startup .bar-hop, .vg-startup .bar-jelly, .vg-startup .bar-track { position: absolute; inset: 0; }
.vg-startup .bar-hop { transform-origin: 50% 100%; }
.vg-startup .bar-jelly { transform-origin: 0 50%; }
.vg-startup .bar-track { border-radius: 999px; background: var(--startup-track); box-shadow: inset 0 calc(var(--lip) * -1) 0 var(--startup-lip); }
.vg-startup .bar-groove, .vg-startup .bar-head { position: absolute; left: var(--pad); right: var(--pad); top: var(--pad); height: var(--t); }
.vg-startup .bar-groove {
  overflow: hidden;
  border-radius: 999px;
  background: var(--startup-groove);
  box-shadow: inset 0 calc(var(--t) * 0.12) calc(var(--t) * 0.14) rgba(0, 0, 0, 0.5);
}
.vg-startup .bar-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: calc(var(--t) / 2 - var(--hl));
  width: 100%;
  border-radius: 999px;
  background: var(--startup-fill);
  box-shadow: inset 0 calc(var(--t) * -0.16) 0 var(--startup-fill-edge);
}
.vg-startup .bar-fill::after {
  content: "";
  position: absolute;
  left: 0;
  right: calc(var(--t) / 2);
  top: 16%;
  height: 28%;
  border-radius: 999px 0 0 999px;
  background: linear-gradient(rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.3));
}
.vg-startup .bar-fill, .vg-startup .bar-head { transform: translateX(calc(var(--lead) - 100%)); transition: transform 0.45s cubic-bezier(0.23, 1, 0.32, 1); }
.vg-startup .bar-tip { position: absolute; right: 0; top: 50%; width: var(--hl); height: calc(var(--t) * 1.5); margin-top: calc(var(--t) * -0.75); transform-origin: 0 50%; }
.vg-startup .bar-tip svg { display: block; width: 100%; height: 100%; }
.vg-startup .bar-tip .edge { fill: var(--startup-fill-edge); stroke: var(--startup-fill-edge); }
.vg-startup .bar-tip .face { fill: var(--startup-fill); stroke: var(--startup-fill); }
/* Full, while the product starts: the arrow nudges to get out and a sheen runs along it. */
.vg-startup .bar-groove::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateX(-100%);
  background: linear-gradient(100deg, rgba(255, 255, 255, 0) 30%, rgba(255, 255, 255, 0.4) 50%, rgba(255, 255, 255, 0) 70%);
}
.vg-startup.starting .bar-groove::after { opacity: 1; animation: vg-startup-sheen 1.8s cubic-bezier(0.77, 0, 0.175, 1) infinite; }
.vg-startup.starting .bar-tip { animation: vg-startup-nudge 1.8s ease-in-out infinite; }
@keyframes vg-startup-sheen { from { transform: translateX(-100%); } 70%, to { transform: translateX(100%); } }
@keyframes vg-startup-nudge { 0%, 45%, 100% { transform: translateX(0); } 20% { transform: translateX(16%); } }
.vg-startup-status { position: relative; z-index: 1; margin-top: 14px; font-size: 0.9rem; text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8); }
.vg-startup.failed .vg-startup-bar { display: none; }
.vg-startup.failed .vg-startup-status { max-width: 80%; text-align: center; text-transform: none; letter-spacing: 0; }
@media (prefers-reduced-motion: reduce) {
  .vg-startup.starting .bar-tip, .vg-startup.starting .bar-groove::after, .vg-startup.settle .vg-startup-art img { animation: none; }
  .vg-startup .bar-fill, .vg-startup .bar-head { transition-duration: 0.2s; }
}